104 results on '"Ma RE"'
Search Results
2. Meta-analysis of the Clinical Efficacy and Safety of Treating Amyotrophic Lateral Sclerosis Based on the Theory of Deficient Qi Induced Stagnation
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Xu Mengfang, Xu Tianjiao, Zhang Muzhao, Han Xiao, Wu Linlu, Chen Tianzhu, Ma Renzhao, and Zou Yihuai
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deficient qi induced stagnation ,amyotrophic lateral sclerosis ,meta analysis ,clinical efficacy ,safety ,Geriatrics ,RC952-954.6 - Abstract
Objective To systematically evaluate the efficacy and safety of treating amyotrophic lateral sclerosis(ALS) based on the theory of “Deficient Qi Induced Stagnation”. Methods CNKI, Wangfang Data, VIP, CBM, PubMed, Embase, Cochrane Library, Web of Science were searched to collect randomized controlled trials of treating ALS based on the theory of “deficient qi induced stagnation” applying the method of replenishing deficiency and passing stagnation for the treatment of ALS published from the establishment of the databases to October 2023. Meta analysis was performed using Revman Manager 5.4 software and Stata 18 software. Results A total of 14 randomized controlled studies involving 844 patients were identified. The total effective rate and ALS functional scale score of combined therapy of traditional Chinese and western medicine in the intervention group were higher than those in the control group (P0.05). Conclusion Treatment of ALS based on the theory of “Deficient Qi Induced Stagnation” can effectively slow down the disease progression, improve neurological function, improve the quality of life, and doesn’s increase the occurrence of adverse effects.
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- 2024
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3. Dynamics of Soil Temperature Under Different Methods of Straw Restoration in Black Soil During Seasonal Freeze-Thaw Period
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LI Shuang, GUO Meilian, FAN Haoming, JIA Yanfeng, and MA Renming
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straw turnover ,black soil ,soil temperature ,freeze-thaw ,Environmental sciences ,GE1-350 ,Agriculture - Abstract
[Objective] To investigate the effects of different straw returning methods on the temperature of black soil during seasonal freeze-thaw period. [Methods] By monitoring the field temperature, the soybean field was selected as the research object, and two types of returning methods were set, namely, straw mulching (FG) and straw mixing(FH). The amount of returned straw was 30% (59 670 kg/hm2), 60% (119 340 kg/hm2) and 90% (179 010 kg/hm2), respectively, and the bare land was designated as the control treatment (CK) in a total of seven treatments. Four soil depths of 5, 10, 20 and 30 cm below the surface along the vertical profile of soil were set to analyze the characteristics of soil temperature changes during the freezing and thawing period under different straw return methods and amounts. [Results] (1) Straw returning to the field resulted in the soil entering various freeze-thaw stages at a time lagging behind that of the bare land, and effectively raised the range of the minimum soil temperature and lowered the maximum temperature, of which both the maximum temperature raising and lowering occurred in the FG90 treatment, which were 3.0~6.1 ℃ and 1.5~5.2 ℃, respectively. (2) Straw returning weakened the soil temperature variability and correlation with air temperature. The maximum coefficient of variation and coefficient of variation and correlation occurred in the bare soil layer of 5 cm, which were 6.54 and 0.82, respectively. The minimum occurred in the 30 cm soil layer of the FG90 treatment, with values of 0.82 and 0.26, respectively. The relationship between soil temperature variability was CK>FG30>FH30>FH60>FG60> FH90>FG90, and the relationship between soil temperature and air temperature was CK>FH30>FG30>FH60>FH90>FG60>FG90>FG90. (3) The freezing and thawing rates of bare land were the highest and the freezing-thawing periods were the shortest, with a freezing rate of 0.19 ℃/h and thawing rate of 0.60 ℃/h. The minimum freezing rate occurred in FH90 treatment (0.04 ℃/h) and the minimum thawing rate occurred in FG90 treatment (0.05 ℃/h). (4) With the increase of soil depth, the soil freezing stage and thawing stage gradually increased, but the freezing duration gradually decreased. The effect of delaying freeze-thawing was most obvious in the FG90 treatment, with the freezing stage and thawing stage of 8 and 10 days, respectively. [Conclusion] The results of the research quantitatively described the temperature characteristics of black soil under different straw return measures during freezing and thawing periods, and clarified the differences in soil temperature effects between different straw return measures, which is of great significance in guiding the rational use of straw resources and conservation tillage in black soil areas.
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- 2024
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4. Genetic and epigenetic differentiation between natural Betula ermanii (Betulaceae) populations inhabiting contrasting habitats
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Wu, Wei-Qing, Yi, Ma Re, Wang, Xin-Feng, Ma, Li-Li, Jiang, Lily, Li, Xi-Wen, Xiao, Hong-Xing, Sun, Ming-Zhou, Li, Lin-Feng, and Liu, Bao
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- 2013
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5. Spatial Distribution of Digital Economy Model in Zhejiang Province, China
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Ma Renfeng, Zhu Min'er, Sun Jingyi, and Zhang Xuliang
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digital economy ,spatial pattern ,driving mechanism ,local characteristics ,zhejiang ,Geography (General) ,G1-922 - Abstract
Taking Zhejiang province as an example, based on county-level economic and social statistics, we established an index system for main factors driving the development of the digital economy. We used entropy, spatial autocorrelation, a Geographically Weighted Regression (GWR) model, and cluster analysis to explore the spatial differences between the development level and driving factors of the digital economy in Zhejiang. First, we observed spatial differences in the development of the digital economy in Zhejiang, with the level being high in the northeast and low in the southwest. Second, the influence of each driving factor represents strong spatial characteristics, and industrial innovation was the most important factor, with a distribution pattern of high in the east and low in the west. As a secondary driving factor, government input is consistent with the spatial layout of the economic factors. Commercial culture is strong in the south and weak in the north. Third, we observed multiple combinations of characteristics in the spatial differences of the four driving factors to establish the mechanism that drives the development of the digital economy in Zhejiang: the local digital economy/new business type is driven by the coupling of industrial innovation atmosphere and consumer demand, formed by developed market advantages. The three main bodies of consumers, government, and enterprises have formed a virtuous circle, promoting each other through the digitization of traditional industries and emerging digital industries, leading the development in the surrounding counties. Fourth, under the action of the four factors, three types of regional development types and 13 subcategories have generally been formed in Zhejiang: enterprise-consumer-led, business-government-led, government-consumer-led. Certain places, such as Hangzhou and Ningbo, are leading the implementation of the concept of digital development, creating the core of the digital economy in Zhejiang; Jiaxing and Jinhua are relying on transportation hub cities or global wholesale centers to rapidly develop intelligent logistics and transportation. In addition, with the support of the government, the later-developing areas are improving their infrastructure and developing the digital industry represented by ecology and tourism. For this reason, in the process of empowering digital economy development, complete attention should be paid to the development path of ecology, tourism, and other suitable digital industries in underdeveloped areas under the leadership of the government. We observed that enterprises and consumers create emerging digital industries in the leading areas of the digital economy in Zhejiang and then promote the digital transformation and upgrading of industries and governments. However, in the later-developing areas dominated by policy investment, the development of the digital economy is mostly oriented toward meeting the needs of industries and consumers, and the force driving emerging digital industries is weak.
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- 2023
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6. The Enlightenment of EU Cross-Border Cooperation Research on the Collaborative Governance in the Guangdong-Hong Kong-Macao Greater Bay Area
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Chen Dening, Wu Kangmin, Wu Jiayu, Ma Renfeng, and Jiang Yanpeng
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eu ,boundary ,border adjacent area ,guangdong-hong kong-macao greater bay area ,collaboration ,Geography (General) ,G1-922 - Abstract
Economic globalization and regional integration are the core motivations of regional cooperation in the 21st century, and the issue of cross-border cooperation has attracted much academic attention. As the largest regional integration organization with the highest level in the world, EU takes the lead in practicing regional integration in the process of economic globalization. Europe's cross-border governance has been paid attention in a long time in economic geography and political geography, and a large number of theoretical and empirical research results have been achieved on issues such as border cooperation model and cross-border governance mechanism. The development experience of EU provides rich theoretical and practical experience for the collaborative governance in the Guangdong-Hong Kong-Macao Greater Bay Area, as the two also involve the collaboration across institutional boundaries and power restructuring. Therefore, the analysis of EU cross-border cooperation is of great significance to promote Guangdong-Hong Kong-Macao coordination. Based on the bibliometric analysis of Citespace, this paper systematically studies the research trends of EU cross-border cooperation from 1993 to 2020. The study finds that: 1) EU cross-border cooperation research mainly focuses on border regional interaction, cross-border cooperation mode, cross-border cooperation field, cross-border cooperation barriers and other issues. The regional integration of Europe has promoted the transformation of border areas from marginal areas to the forefront of development, and gradually formed a cross-border governance model under the superposition of formal institutional arrangements and informal institutional arrangements. The field of cooperation involves economic cooperation, tourism, environmental governance, health and other fields. 2) The development of EU cross-border cooperation benefits from the political interaction and mutual trust between countries, formal and informal institutional coordination, and the expansion and deepening of the scope of cooperation. However, there are still deficiencies in bilateral differences, cross-border accessibility, immigration and security. 3) As the same cross-institutional border region, the practical experience of EU cross-border cooperation has important enlightenment for the collaborative governance in the Guangdong-Hong Kong-Macao Greater Bay Area. Value identity is the basis of cross-institutional cooperation in the Guangdong-Hong Kong-Macao Greater Bay Area. Inclusive and orderly institutional arrangements are conducive to reducing the shielding effect of cooperation boundaries. And the combination of multi-scale cooperation and multi-dimensional governance system will effectively improve the cooperation in border areas.
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- 2022
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7. Vortex radiation from a single emitter in a chiral plasmonic nanocavity
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Wang Xing-Yuan, Chen Hua-Zhou, Wang Suo, Ge Li, Zhang Shuang, and Ma Ren-Min
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anomalous spontaneous emission ,exceptional point ,nanocavity ,optical vortex ,parity-time symmetry ,single emitter ,Physics ,QC1-999 - Abstract
Manipulating single emitter radiation is essential for quantum information science. Significant progress has been made in enhancing the radiation efficiency and directivity by coupling quantum emitters with microcavities and plasmonic antennas. However, there has been a great challenge to generate complex radiation patterns such as vortex beam from a single emitter. Here, we report a chiral plasmonic nanocavity, which provides a strong local chiral vacuum field at an exceptional point. We show that a single linear dipole emitter embedded in the nanocavity will radiate to vortex beam via anomalous spontaneous emission with a Purcell enhancement factor up to ∼1000. Our scheme provides a new field manipulation method for chiral quantum optics and vortex lasers at the nanoscale.
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- 2022
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8. Plasmonic nanolasers: fundamental properties and applications
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Ma Ren-Min and Wang Si-Yi
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nanolasers ,plasmonic nanolasers ,semiconductor lasers ,spasers ,Physics ,QC1-999 - Abstract
Plasmonic nanolasers are a new class of coherent emitters where surface plasmons are amplified by stimulated emission in a plasmonic nanocavity. In contrast to lasers, the physical size and mode volume of plasmonic nanolasers can shrink beyond the optical diffraction limit, and can be operated with faster speed and lower power consumption. It was initially proposed by Bergman and Stockman in 2003, and first experimentally demonstrated in 2009. Here we summarize our studies on the fundamental properties and applications of plasmonic nanolasers in recent years, including dark emission characterization, scaling laws, quantum efficiency, quantum threshold, gain and loss optimization, low loss plasmonic materials, sensing, and eigenmode engineering.
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- 2021
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9. Loss and gain in a plasmonic nanolaser
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Wang Shao-Lei, Wang Suo, Man Xing-Kun, and Ma Ren-Min
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gain ,laser miniaturization ,loss ,plasmonic nanolaser ,semiconductor ,Physics ,QC1-999 - Abstract
Plasmonic nanolasers are a new class of laser devices which amplify surface plasmons instead of photons by stimulated emission. A plasmonic nanolaser cavity can lower the total cavity loss by suppressing radiation loss via the plasmonic field confinement effect. However, laser size miniaturization is inevitably accompanied with increasing total cavity loss. Here we reveal quantitatively the loss and gain in a plasmonic nanolaser. We first obtain gain coefficients at each pump power of a plasmonic nanolaser via analyses of spontaneous emission spectra and lasing emission wavelength shift. We then determine the gain material loss, metallic loss and radiation loss of the plasmonic nanolaser. Last, we provide relationships between quality factor, loss, gain, carrier density and lasing emission wavelength. Our results provide guidance to the cavity and gain material optimization of a plasmonic nanolaser, which can lead to laser devices with ever smaller cavity size, lower power consumption and faster modulation speed.
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- 2020
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10. Revisiting the EKC Hypothesis With Export Diversification and Ecological Footprint Pressure Index for India: A RALS-Fourier Cointegration Test
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UK Pata, Farrukh Shahzad, Zeeshan Fareed, and MA Rehman
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ecological footprint ,EKC hypothesis ,export diversification ,RALS-fourier cointegration ,India ,Environmental sciences ,GE1-350 - Abstract
This study assesses India’s environmental problems by focusing on the ecological footprint pressure index (EFPI), which provides a simultaneous analysis of biocapacity and ecological footprint. In particular, the study examines the impact of export diversification, economic growth, and renewable energy on EFPI under the environmental Kuznets curve (EKC) hypothesis for India. To analyze the long-run relationships, the Residual Augmented Ordinary Least Squares (RALS)-Fourier cointegration test is applied to annual data from 1965 to 2014. Contrary to the EKC hypothesis, the results show a U-shaped relationship between income and EFPI. The absence of the EKC hypothesis implies that economic development does not help to ensure environmental quality; hence, other measures are required to minimize irreversible environmental problems. In this regard, the results of the study suggest that renewable energy consumption and export diversification reduce EFPI. Based on the overall findings of the study, it is recommended that the Indian government improve environmental values by changing the export structure and energy mix.
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- 2022
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11. Anticoccidial and Biochemical Effects of Artemisia Brevifolia Extract in Broiler Chickens
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K Hussain, RZ Abbas, A Abbas, MA Rehman, MA Raza, T Rehman, R Hussain, MS Mahmood, M Imran, MA Zaman, ZD Sindhu, MK Khan, and S Ali
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Artemisia brevifolia ,Eimeria: Resistance: Control ,Animal culture ,SF1-1100 ,Veterinary medicine ,SF600-1100 ,Zoology ,QL1-991 - Abstract
ABSTRACT This study was conducted to evaluate the anticoccidial potential of Artemisia brevifolia extract (ABE) and its effect on biochemical parameters against experimental coccidiosis in broiler chickens. For this purpose, a total of 150 broiler chicks were procured and divided into 5 equal groups (30 birds per group). At one week of age, the first three groups (A, B and C) were orally fed with ABE at dose rates of 100, 200 and 300mg/kg respectively for seven consecutive days. Group D served as infected/medicated and was treated with Baycox® (1ml/L of water). Group E served as the infected/non-medicated control group. At two weeks of age, all groups were infected with 50,000 sporulated oocysts of Eimeria tenella. The anticoccidial potential was evaluated based on lesion score, oocyst score, fecal score, feed conversion ratio, and mortality (%). Furthermore, the effect of ABE on hematological parameters and serum chemistry was also evaluated by following standard procedures. The anticoccidial effects were compared with the standard drug Baycox® (p>0.05). Results of the study showed the anticoccidial activity of ABE in terms of lesion diminishing, oocyst and fecal scores, better feed conversion ratios, and mortality reduction (%). The ABE also improved hematological parameters and stabilized the serum enzymes (ALT, LDH, Creatinine) of infected chicks (p>0.05).
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- 2021
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12. Creativity and emerging technologies in education
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Yésica del Águila Ríos, Mª Regina Teixeira Ferreira Capelo, John Miguel Costa Varela, Jorge Guerra Antequera, and Juan Antonio Antequera Barroso
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tecnologías emergentes ,creatividad ,educación ,metodologías didácticas international ,Psychology ,BF1-990 - Abstract
Creativity is a rising value due to its close relationship with problem solving and entrepreneurship. It is convenient that this creativity be fostered from the first years of schooling when the fantasy and symbolic world of the child is in full boiling and where everything is possible. Thus, the promotion of creativity is conveniently contemplated in the curriculum of the stage. On the other hand, the educational administrations are promoting the use of didactic methodologies in which the students, as protagonists of their learning, participate actively in the creation of content and educational materials. This new scenario is generating new challenges and learning for teachers. It is essential to know and master what tools and strategies are necessary in the world of information and knowledge. The teaching staff can no longer be the same as in the past given that they perform another very different task: that of teaching to learn with the means available to their students and not teaching content as in the past. The results consistent with the literature make it impossible to conceive a curriculum that promotes creativity without education for the media and without the emerging technologies that can be applied in the classroom.
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- 2019
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13. Study of the guidance and spatial perception in pupils of the childhood education through portal 2
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Juan Antonio Antequera Barroso, Jorge Guerra Antequera, Mª Regina Teixeira Ferreira Capelo, John Miguel Costa Varela, and Yésica del Águila Ríos
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videojuego ,orientación espacial ,percepción espacial ,educación infantil ,Psychology ,BF1-990 - Abstract
The video game is a tool whose expansion and cultural roots in today’s society allows its inclusion as a didactic element to work with students. The study has been directed to the students of the 2nd year of the Infant Education degree of the Faculty of Education Sciences of the University of Cadiz. We have used the video game Portal 2 to work with our students on concepts such as orientation and spatial perception. Concepts of great importance in the stage of Infant Education, stage in which the children have their first contact with the school. In such a way that the future teachers will have to contribute the sufficient tools to their future students to relate with the space that surrounds them. The methodology used in this experience has been of a quantitative nature with a total number of students of 170. An exploratory study has been carried out in 6 groups. The procedure was carried out in three different phases: (a) Introduction to the basic concepts of the Portal 2 video game. (b) Free and guided play session and (c) completion of a questionnaire. The results obtained indicate that the students acquire certain skills related to orientation and spatial perception and other knowledge related to the mathematical field, such as decision making, after the use of the video game Portal 2. As a conclusion, it can be pointed out that students perceive play as an element of interest in the classroom, although not necessarily in the educational context of Early Childhood Education; rather, they orient it to higher educational contexts such as Primary and Secondary Education. Nevertheless, they consider that its inclusion would improve the capacity for abstraction, interpretation and spatial perception.
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- 2019
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14. Oral versus intramuscular administration of vitamin B12 for vitamin B12 deficiency in primary care: a pragmatic, randomised, non-inferiority clinical trial (OB12)
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Teresa Sanz-Cuesta, Esperanza Escortell-Mayor, Isabel Cura-Gonzalez, Jesus Martin-Fernandez, Rosario Riesgo-Fuertes, Sofía Garrido-Elustondo, Jose Enrique Mariño-Suárez, Mar Álvarez-Villalba, Tomás Gómez-Gascón, Inmaculada González-García, Paloma González-Escobar, Concepción Vargas-Machuca Cabañero, Mar Noguerol-Álvarez, Francisca García de Blas-González, Raquel Baños-Morras, Concepción Díaz-Laso, Nuria Caballero-Ramírez, Alicia Herrero de-Dios, Rosa Fernández-García, Jesús Herrero-Hernández, Belen Pose-García, María Luisa Sevillano-Palmero, Carmen Mateo-Ruiz, Beatriz Medina-Bustillo, Monica Aguilar-Jiménez, Isabel Gutiérrez-Sánchez, Ángeles Fernández-Abad, José Antonio Granados-Garrido, Javier Martínez-Suberviola, Margarita Beltejar-Rodríguez, Carmen Coello-Alarcón, Susana Diez-Arjona, Ana Ballarín-González, Ignacio Iscar-Valenzuela, José Luis Quintana-Gómez, José Antonio González-Posada-Delgado, Enrique Revilla-Pascual, Esther Gómez-Suarez, Yolanda Fernández-Fernández, Fernanda Morales-Ortiz, Isabel Ferrer-Zapata, Esperanza Duralde-Rodríguez, Milagros Beamud-Lagos, Mª del Pilar Serrano-Simarro, Cristina Montero-García, María Domínguez-Paniagua, Sofía Causín-Serrano, Josefa San Vicente-Rodríguez, Germán Reviriego-Jaén, Margarita Camarero-Shelly, Rosa Gómez-del Forcallo, María Ángeles Miguel-Abanto, Lourdes Reyes-Martínez, Alejandro Rabanal-Basalo, Carolina Torrijos-Bravo, Pilar Gutiérrez-Valentín, Jorge Gómez-Ciriano, Susana Parra Román, Judit León-González, Mª José Nebril-Manzaneque, Juana Caro-Berzal, Alberto López-García-Franco, Sonia Redondo de-Pedro, Juan Carlos García-Álvarez, Elisa Viñuela-Beneitez, Marisa López-Martín, Nuria Sanz-López, Ana María Ibarra-Sánchez, Cecilio Gómez-Almodóvar, Javier Muñoz-Gutiérrez, Carmen Molins-Santos, Cristina Cassinello-Espinosa, Antonio Molina-Siguero, Rafael Sáez-Jiménez, Paloma Rodríguez-Almagro, Eva María Rey-Camacho, María Carmen Pérez-García, Antonio Redondo-Horcajo, Beatriz Pajuelo-Márquez, Encarnación Cidoncha-Calderón, Jesús Galindo Rubio, RosaAna Escriva Ferrairo, José Francisco Ávila-Tomas, Francisco De-Alba-Gómez, Mª Jesús Gómez-Martín, Alma María Fernández-Martínez, Rosa Feijoó-Fernández, José Vizcaíno-Sánchez-Rodrigo, Victoria Díaz-Puente, Felisa Núñez-Sáez, Luisa Asensio-Ruiz, Agustín Sánchez-Sánchez, Orlando Enríquez-Dueñas, Silvia Fidel-Jaimez, Rafael Ruiz-Morote-Aragón, Asunción Pacheco-Pascua, Belén Soriano-Hernández, Eva Álvarez-Carranza, Carmen Siguero-Pérez, Ana Morán-Escudero, María Martín-Martín, Francisco Vivas-Rubio, Rafael Pérez-Quero, Mª Isabel Manzano-Martín, César Redondo-Luciáñez, Nuria Tomás-García, Carlos Díaz-Gómez-Calcerrada, Julia Isabel Mogollo-García, Inés Melero-Redondo, Ricardo González-Gascón, María Carmen Álvarez-Orviz, María Veredas González-Márquez, Teresa SanClemente-Pastor, Amparo Corral-Rubio, Asunción Prieto-Orzanco, Cristina dela Cámara-Gonzalez, Mercedes Parrilla-Laso, Mercedes Canellas-Manrique, Maria Eloisa Rogero-Blanco, Paulino Cubero-González, Sara Sanchez-Barreiro, Mª Ángeles Aragoneses-Cañas, Ángela Auñón-Muelas, Olga Álvarez Montes, Petra María Cortes-Duran, Pilar Tardaguila-Lobato, Mar Escobar Gallegos, Antonia Pérez-de-Colosia-Zuil, Jaime Inneraraty-Martínez, María Jesús Bedoya-Frutos, María Teresa López-López, Nelly Álvarez-Fernández, Teresa Fontova-Cemeli, Josefa Marruedo-Mateo, Josefa Díaz-Serrano, Beatriz Pérez-Vallejo, Pilar Hombrados-Gonzalo, Marta Quintanilla-Santamaría, Yolanda González-Pascual, Luisa María Andrés-Arreaza, Soledad Escolar-Llamazares, Cristina Casado-Rodríguez, Luzdel Rey-Moya, Jesús Fernández-Valderrama, Alejandro Medrán-López, Julia Alonso-Arcas, Alejandra Rabanal-Carrera, Araceli Garrido-Barral, Milagros Velázquez-García, Azucena Sáez-Berlanga, Pilar Pérez-Egea, Pablo Astorga-Díaz, Carlos Casanova-García, Ana Isabel Román-Ruiz, Carmen Belinchón-Moya, Margarita Encinas-Sotillo, Virtudes Enguita-Pérez, Ester Valdés-Cruz, Consuelo Mayoral-López, Teresa Gijón-Seco, Francisca Martínez-Vallejo, Jesica Colorado-Valera, Ana Sosa-Alonso, Jeannet Sánchez-Yépez, Dolores Serrano-González, Beatriz López-Serrano, Inmaculada Santamaría-López, Paloma Morso-Peláez, Carolina López-Olmeda, Almudena García-Uceda-Sevilla, Mercedes delPilar Fernández-Girón, Leonor González-Galán, Mariano Rivera-Moreno, Luis Nistal Martín-de-Serranos, Mª Jesús López-Barroso, Margarita Torres-Parras, María Verdugo-Rosado, Mª Reyes Delgado-Pulpón, Elena Alcalá-Llorente, Sonsoles Muñoz-Moreno, Isabel Vaquero-Turiño, Ana María Sánchez-Sempere, FranciscoJavier Martínez-Sanz, Clementa Sanz-Sanchez, AnaMaría Arias-Esteso, Diego Martín-Acicoya, Pilar Kloppe-Villegas, Francisco Javier San-Andrés-Rebollo, Magdalena Canals-Aracil, Isabel García-Amor, Nieves Calvo-Arrabal, María Milagros Jimeno-Galán, Gloriade la Sierra-Ocaña, María Mercedes Araujo-Calvo, Julia Timoner-Aguilera, María Santos Santander-Gutiérrez, Alicia Mateo-Madurga, Ricardo Rodríguez-Barrientos, Milagros Rico-Blázquez, Juan Carlos Gil-Moreno, Mariel Morey-Montalvo, Amaya Azcoaga Lorenzo, Gloria Ariza-Cardiel, Elena Polentinos-Castro, Sonia Soto-Díaz, Mª Teresa Rodríguez-Monje, Susana Martín-Iglesias, Francisco Rodríguez-Salvanés, Marta García-Solano, Rocío González-González, María Vicente Herrero, Ramón Rodríguez-González, Irene Bretón-Lesmes, Martadel Alamo Camuñas, Anabel Sánchez Espadas, Marisa Serrano Olmeda, and Mª Angeles Gálvez Múgica
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Medicine - Abstract
Objectives To compare the effectiveness of oral versus intramuscular (IM) vitamin B12 (VB12) in patients aged ≥65 years with VB12 deficiency.Design Pragmatic, randomised, non-inferiority, multicentre trial in 22 primary healthcare centres in Madrid (Spain).Participants 283 patients ≥65 years with VB12 deficiency were randomly assigned to oral (n=140) or IM (n=143) treatment arm.Interventions The IM arm received 1 mg VB12 on alternate days in weeks 1–2, 1 mg/week in weeks 3–8 and 1 mg/month in weeks 9–52. The oral arm received 1 mg/day in weeks 1–8 and 1 mg/week in weeks 9–52.Main outcomes Serum VB12 concentration normalisation (≥211 pg/mL) at 8, 26 and 52 weeks. Non-inferiority would be declared if the difference between arms is 10% or less. Secondary outcomes included symptoms, adverse events, adherence to treatment, quality of life, patient preferences and satisfaction.Results The follow-up period (52 weeks) was completed by 229 patients (80.9%). At week 8, the percentage of patients in each arm who achieved normal B12 levels was well above 90%; the differences in this percentage between the oral and IM arm were −0.7% (133 out of 135 vs 129 out of 130; 95% CI: −3.2 to 1.8; p>0.999) by per-protocol (PPT) analysis and 4.8% (133 out of 140 vs 129 out of 143; 95% CI: −1.3 to 10.9; p=0.124) by intention-to-treat (ITT) analysis. At week 52, the percentage of patients who achieved normal B12 levels was 73.6% in the oral arm and 80.4% in the IM arm; these differences were −6.3% (103 out of 112 vs 115 out of 117; 95% CI: −11.9 to −0.1; p=0.025) and −6.8% (103 out of 140 vs 115 out of 143; 95% CI: −16.6 to 2.9; p=0.171), respectively. Factors affecting the success rate at week 52 were age, OR=0.95 (95% CI: 0.91 to 0.99) and having reached VB12 levels ≥281 pg/mL at week 8, OR=8.1 (95% CI: 2.4 to 27.3). Under a Bayesian framework, non-inferiority probabilities (Δ>−10%) at week 52 were 0.036 (PPT) and 0.060 (ITT). Quality of life and adverse effects were comparable across groups. 83.4% of patients preferred the oral route.Conclusions Oral administration was no less effective than IM administration at 8 weeks. Although differences were found between administration routes at week 52, the probability that the differences were below the non-inferiority threshold was very low.Trial registration numbers NCT 01476007; EUDRACT (2010-024129-20).
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- 2020
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15. Lasing Enhanced Surface Plasmon Resonance Sensing
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Wang Xing-Yuan, Wang Yi-Lun, Wang Suo, Li Bo, Zhang Xiao-Wei, Dai Lun, and Ma Ren-Min
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surface plasmon resonances ,stimulated emission ,plasmon lasers ,sensors ,Physics ,QC1-999 - Abstract
The resonance phenomena of surface plasmons has enabled development of a novel class of noncontact, real-time and label-free optical sensors, which have emerged as a prominent tool in biochemical sensing and detection. However, various forms of surface plasmon resonances occur with natively strong non-radiative Drude damping that weakens the resonance and limits the sensing performance fundamentally. Here we experimentally demonstrate the first lasing-enhanced surface plasmon resonance (LESPR) refractive index sensor. The figure of merit (FOM) of intensity sensing is ~84,000, which is about 400 times higher than state-of-the-art surface plasmon resonance (SPR) sensor. We found that the high FOM originates from three unique features of LESPR sensors: high-quality factor, nearly zero background emission and the Gaussian-shaped lasing spectra. The LESPR sensors may form the basis for a novel class of plasmonic sensors with unprecedented performance for a broad range of applications.
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- 2017
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16. Calidad en el sector turístico: marco normativo y planificación
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Mª REMEDIOS ZAMORA ROSELLÓ
- Subjects
Administración pública ,Sostenibilidad ,Competitividad ,Accesibilidad ,Residentes y visitantes ,Andalucía ,Recreation. Leisure ,GV1-1860 - Abstract
En este artículo se analiza la calidad desde la perspectiva del sector público, incidiendo en la participación de la Administración General del Estado y de las Comunidades Autónomas, con especial atención a la regulación e instrumentos de planificación adoptados en Andalucía. La perspectiva autonómica se completa con el estudio de las iniciativas adoptadas en Cataluña y en Canarias; esta selección tiene su origen en la experiencia turística de estas Comunidades y el alto número de visitantes, nacionales e internacionales, que reciben anualmente. El examen de la evolución en las disposiciones y en los planes adoptados, permite conocer cuáles son los objetivos y principios para la consecución de la calidad que se están fomentando desde las Administraciones Públicas, así como el nivel de adaptación de estos fines a las demandas del sector privado y de la ciudadanía. La metodología empleada ha sido el análisis jurídico del marco normativo vigente, así como de los instrumentos de planificación adoptados, y la documentación con fuentes bibliográficas.
- Published
- 2019
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17. Trimester specific reference ranges for serum TSH and Free T4 among United Arab Emirates pregnant women
- Author
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Aly Bernard Khalil, Bashir Taha Salih, Onismos Chinengo, Ma Remy D. Bardies, Andrew Turner, and Laila O. Abdel Wareth
- Subjects
Medicine (General) ,R5-920 ,Chemistry ,QD1-999 - Abstract
Background: The American Thyroid Association (ATA) recommended the establishment of population specific reference ranges for thyroid hormones during pregnancy. Initial studies conducted in the United Arab Emirates (UAE) in 2003 and 2004 on pregnant women published a considerably higher upper limit for thyroid stimulating hormone (TSH) than that proposed by ATA. The UAE was classified as a country with mild iodine deficiency at the time of this initial study. After the implementation of aggressive strategies to address iodine deficiency over the last decade, the UAE was recently declared as iodine sufficient. The current study re-evaluates the reference intervals for thyroid hormones for pregnant women in the UAE after the declaration of iodine sufficiency status. Methods: TSH and free thyroxin (FT4) from 414 UAE national pregnant females were analyzed to determine trimester specific reference ranges. Results: The upper limits of the TSH reference ranges were found to be significantly lower than previously reported, but still higher than those recommended by ATA in 2011.FT4 reference ranges were found to be slightly lower than previously reported. Conclusion: TSH trimester specific reference ranges in UAE national pregnant women are higher than those recommended by ATA in 2011 but in keeping with the latest guidelines published in 2017. This should be considered while interpreting thyroid function tests in this population. Further studies including urinary iodine measurement, body mass index and larger numbers per partition in this population are recommended. Keywords: Reference intervals, Gestation, Thyroid stimulating hormone, Pregnancy, Free thyroxin
- Published
- 2018
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18. The Study on the Effects of Garlic Essential Oil on Growth Curve and TDH Toxin Production of Vibrio parahaemolyticus
- Author
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A Akhondzadeh Basti, Z Mashak, A Khanjari, MA Rezaei, F Mohammadkhan, A Taheri Mirghaed, P Faghih Fard, and N Tayyar Hashtjin
- Subjects
vibrio parahaemolyticus ,garlic essential oil ,tdh ,Therapeutics. Pharmacology ,RM1-950 ,Toxicology. Poisons ,RA1190-1270 - Abstract
Background: Vibrio parahaemolyticus causes acute gastroenteritis associated with the consumption of contaminated raw or under cooked seafood. The virulence of vibrio parahaemolyticus is initially attributed to the production of a thermostable direct hemolysin (TDH). Objective: The survey of different concentrations of garlic essential oil (Allium sativum) on MIC, MBC, growth curve and production of TDH toxin of vibrio parahaemolyticus. Methods: The effects of garlic essential oil at concentrations of 0, 0.005, 0.015, 0.03 and 0.045% on the MIC, MBC, growth curve and production of TDH toxin of vibrio parahaemolyticus were studied in BHI model. Results: MIC and MBC of garlic essential oil was estimated 0.03%. The essential oil showed significant effect on toxin production, Titers of TDH production in 0 and 0.005% were 1/256 comparing to 1/64 in 0.015% concentration of EO. Concentrations of 0.005 and 0.015% of garlic essential oil reduced the bacterial growth rate significantly (p
- Published
- 2014
19. Impacto del Real Decreto-Ley 16/2012 sobre el copago farmacéutico en el número de recetas y en el gasto farmacéutico
- Author
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Fernando Antoñanzas Villar, Roberto Rodríguez Ibeas, Carmelo A. Juárez Castelló, and Mª Reyes Lorente Antoñanzas
- Subjects
Medicine ,Public aspects of medicine ,RA1-1270 - Abstract
Fundamentos: el objetivo del trabajo es es conocer si el impacto del Real Decreto-Ley 16/2012 en el número de recetas y el gasto farmacéutico, evaluadas por el Ministerio de Sanidad, Servicios Sociales e Igualdad (MSSSI), se corresponden con las obtenidas por otros métodos estadísticos habitualmente empleados. Asimismo, se han elaborado unos modelos para predecir la evolución de ambas variables entre septiembre de 2013 y diciembre de 2014. Métodos: se aplicó la metodología Box-Jenkins conjuntamente con el análisis de intervención de Box-Tiao a datos del periodo 2003-13 para predecir mensualmente los valores de las series de recetas y gasto farmacéutico. Las predicciones se emplearon en un análisis contrafáctico para compararlas con las series de recetas y gasto real. También se efectuaron predicciones para el periodo de septiembre de 2013 a diciembre de 2014 para observar el impacto de la medida en un horizonte superior al real Resultados: el análisis contrafáctico estimó el descenso en el número de recetas en un 12,18% y el del gasto farmaceutico en un 12,83%, mientras que al calcularse mediante el análisis de intervención fueron 12,75% y 14,03%, respectivamente. Conclusiones: la reducción estimada del número de recetas para el periodo de junio de 2012 hasta agosto de 2013 es similar a la ofrecida por el MSSSI, mientras que para la serie del gasto farmacéutico fue inferior a la ofrecida por el MSSSI. La metodología de Box-Jenkins genera errores de predicción menores al 3% por lo que se considera útil para anticipar fiablemente los consumos futuros.
- Published
- 2014
20. Evolución de las acciones educativas en el exterior (AEE) de España en Francia
- Author
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Mª Remedios González
- Subjects
acciones educativas en el exterior ,emigración ,crisis económica ,educación superior ,mundo laboral ,international education actions ,emigration ,economic crisis ,higher education ,working world ,Education ,Education (General) ,L7-991 - Abstract
Este artículo analiza cómo se enfrentan los alumnos que terminan el Bachillerato a su futuro laboral y formativo a través de una encuesta realizadas en la primavera del 2011 a alumnos del distrito madrileño de la Universidad Complutense, entre los que se encuentran los del Liceo Español de París. La comparación entre los resultados de los alumnos del Liceo y los de sus compañeros parece indicar un cambio de modelo en los receptores de las acciones educativas españolas en el exterior. Por otro lado y desde hace años, la política común y los objetivos educativos europeos han estado marcados por la llamada «Estrategia de Lisboa» que ha apostado por empleos de calidad, basados en la formación, que llevarían a la innovación y al desarrollo tecnológico y esta política debería tener refl ejo en las expectativas de los alumnos. La situación de crisis económica que atraviesa Europa y en particular España, desde el 2008, introduce un nuevo escenario que puede influir en la toma de decisiones en este periodo tan significativo de final de la Enseñanza Secundaria que coincide con la incorporación de los alumnos a la ciudadanía plena y, en ocasiones, con su incorporación al mundo laboral.This article discusses how to confront students completing high school to their future employment and training through a survey conducted in the spring of 2011 with students in the Madrid’s district of Complutense University, among which are those of the Spanish Lyceum of Paris. The comparison between the results of the Lyceum students and their peers suggests a paradigm shift in the receptor of Spanish international education actions. On the other hand and for years now, the common policies and the European educational objectives have been marked by the «Lisbon Strategy » which has made a high bet on quality jobs, based on good education, which would lead to innovation and technological development and this policy should be reflected in students’ expectations. The European economic crisis and in particular in Spain, since 2008, introduces a new scenario that may influence decision-makings in the significant period of being ending Secondary Education, a time matching the incorporation of students to full citizenship and, at times, with its incorporation into the workplace.
- Published
- 2013
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21. Ultra-compact silicon nanophotonic modulator with broadband response
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Sorger Volker J., Lanzillotti-Kimura Norberto D., Ma Ren-Min, and Zhang Xiang
- Subjects
modulator ,silicon-on-insulator ,ultra-compact ,Physics ,QC1-999 - Abstract
Electro-optic modulators have been identified as the key drivers for optical communication and signal processing. With an ongoing miniaturization of photonic circuitries, an outstanding aim is to demonstrate an on-chip, ultra-compact, electro-optic modulator without sacrificing bandwidth and modulation strength. While silicon-based electro-optic modulators have been demonstrated, they require large device footprints of the order of millimeters as a result of weak non-linear electro-optical properties. The modulation strength can be increased by deploying a high-Q resonator, however with the trade-off of significantly sacrificing bandwidth. Furthermore, design challenges and temperature tuning limit the deployment of such resonance-based modulators. Recently, novel materials like graphene have been investigated for electro-optic modulation applications with a 0.1 dB per micrometer modulation strength, while showing an improvement over pure silicon devices, this design still requires device lengths of tens of micrometers due to the inefficient overlap between the thin graphene layer, and the optical mode of the silicon waveguide. Here we experimentally demonstrate an ultra-compact, silicon-based, electro-optic modulator with a record-high 1 dB per micrometer extinction ratio over a wide bandwidth range of 1 μm in ambient conditions. The device is based on a plasmonic metal-oxide-semiconductor (MOS) waveguide, which efficiently concentrates the optical modes’ electric field into a nanometer thin region comprised of an absorption coefficient-tuneable indium-tin-oxide (ITO) layer. The modulation mechanism originates from electrically changing the free carrier concentration of the ITO layer which dramatically increases the loss of this MOS mode. The seamless integration of such a strong optical beam modulation into an existing silicon-on-insulator platform bears significant potential towards broadband, compact and efficient communication links and circuits.
- Published
- 2012
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22. Un ejemplo de profesor agente de buenas prácticas docentes en el ámbito de la Sociología.
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Fermín María González García, Mª Reyes Fiz Poveda, and Peio Ayerdi Echeverri
- Subjects
buenas prácticas docentes ,mapas conceptuales ,conocimiento experto ,modelo de conocimiento ,cmap tools software ,profesor universitario ,organización social y desarrollo humano ,sociología ,Education - Abstract
Se muestra en este trabajo un modelo de conocimiento construido sobre buenas prácticas docentes de un profesor universitario, responsable de la asignatura “Organización Social y Desarrollo Humano”, correspondiente al primer semestre del Grado de Sociología. El modelo fue realizado en el marco de una investigación que se ha llevado a cabo por 6 universidades españolas. El trabajo identifica, analiza, explicita y representa con la ayuda del programa informático CMap Tools el pensamiento pedagógico y la práctica docente de un profesor universitario caracterizado por su buena práctica. El modelo de conocimiento construido de las buenas prácticas de este profesor, fácilmente accesible a través de Internet, constituye un excelente ejemplo que puede orientar tanto al profesor novel como a profesores experimentados que quieran mejorar la calidad de la docencia que imparten.
- Published
- 2012
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23. Causes of death after hip fracture in senile patients
- Author
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MA Ren-shi, ZHANG Yu, HUANG Xu, ZHU Dong, GU Gui-shan, YANG Guo-tao, LI Ming, SONG Ai-hua, and YOU Yang
- Subjects
Medicine (General) ,R5-920 - Abstract
【Abstract】Hip trauma has been a leading cause of death in senile patients for more than a centenary. Although the mortality decreased due to the advanced technique in medication, surgery and nursing, the increasing mortality should not be neglected in elders after orthopedic opera-tion nowadays. Many factors are considered to influence the causes of death after trauma, such as age, gender, per-sonal customs, comorbidities, types of fracture, timing of surgery, procedure, anesthesia, complications, medical treatment, activity of daily living, or even marriage status. This article reviews these causes from the aspects of patient’s own factors, iatrogenic factors, medical treatment and other factors and provides some clues for further clini-cal application according to the recent foreign and domes-tic researches. According to the present research, it is es-sential for surgeons to perform a comprehensive estimation for patients suffering from hip trauma. Key words: Hip fractures; Aged; Cause of death; Review
- Published
- 2012
24. Comparison study of quality control standards between private and public medical diagnostic laboratories in Shiraz- 2011
- Author
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MA Rezaei, F Ghahramani, and GH Sadravi
- Subjects
medical diagnostic laboratories ,quality control ,laboratories’ standards ,private laboratories ,Public aspects of medicine ,RA1-1270 - Abstract
Background: Medical diagnostic laboratories play an important role in diagnosis, treatment and prevention of the diseases. Today’s without assisting of the laboratories, conserving of public health and outbreaks prevention of infectious and genetic diseases is impossible. In this research the cases determined by the department of health and medical education questionnaire in quality control of public and private laboratories. Materials and Methods: This study is a cross sectional (descriptive and analytic) in which 20 private medical diagnostic laboratories and 16 training centers were selected. The quality control standards were reviewed and compared. Results: From 12 items of the questionnaire the two following items, rules and regulations in both private and public laboratories gained the highest priorities with 100% private and 93% governmental laboratories respectively. The lowest score was related to testing quality control of the laboratories with that of public and private ones, 82% and 75.7 percent respectively. In all that cases, governmental laboratories and training centers were rated lower than private labs. Conclusion: This study showed that both private and public laboratories’ score were under below of standards. Governmental laboratories were rated lower than private labs. In private laboratories, identifying errors and in the governmental laboratories, testing quality control should be considered
- Published
- 2012
25. Postoperative mortality and morbidity in octogenarians and nonagenarians with hip fracture: an analysis of perioperative risk factors
- Author
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MA Ren-shi, GU Gui-shan, HUANG Xu, ZHU Dong, ZHANG Yu, LI Ming, and YAO Hai-yu
- Subjects
Medicine (General) ,R5-920 - Abstract
【Abstract】Objective: To evaluate the role of high risk factors in octogenarians and nonagenarians with hip trauma, which may lead to excessive mortality and morbi- dity postoperatively. Methods: Fifty-four octogenarians and nonagenarians patients were enrolled in the study, receiving surgical repair of hip fracture in our hospital from January 2006 to January 2010. High risk factors were recorded preoperatively in detail. Complications and survival state were followed up by telephone for 2 years postoperatively. All the data were analyzed by Chi-square test with SPSS 13.0. Results: Twenty-six males (48.1%), aged from 80 to 94 years with a mean age of 84.2 years, and twenty-eight females (51.9%), aged from 80 to 95 years with a mean age of 83.4 years, were presented in the cohort study. The hip traumas were caused by daily slight injuries (52 cases) and car accidents (2 cases), respectively. Twenty-eight patients (51.9%) with femoral neck fracture while 26 patients (48.1%) with intertrochanteric fracture were diagnosed through an anterior-posterior pelvic radiophotograph. In this series, 39 patients (72.2%) suffered from one or more comorbidities preoperatively. The morbidity was 48.1% and the major cause was urinary tract infection, while a significant difference was noted between females and males. The mortality was 20.4% with a predominant cause of acute renal failure. Conclusions: The gender should be considered as a critical high risk factor in octogenarians and nonagenarians with hip trauma postoperatively. Females are more likely to suffer complications postoperatively, which is especially obvious in senile patients over 80 years (P
- Published
- 2012
26. LA ATENCIÓN A LA DIVERSIDAD EN LA EDUCACIÓN SECUNDARIA OBLIGATORIA: VALORACIONES DE LOS PROFESIONALES
- Author
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Eva Liesa Hernández, Montserrat Castelló, Mª Reyes Carretero Torres, Maribel Cano, and Paula Mayoral
- Subjects
Education ,Theory and practice of education ,LB5-3640 - Abstract
El objetivo de este estudio es analizar la evolución que la atención a la diversidad ha tenido enCataluña durante la última década a partir de las valoraciones de distintos profesionales del mundo de la educación implicados en el tema. El estudio, de carácter cualitativo, se llevó a cabo a partir de un diseño de estudio de casos. Las personas informantes fueron seleccionadas por su especial vinculación con el sistema educativo catalán. Los resultados muestran que no se han introducido, de una manera clara y decidida, las políticas que hacen posible un modelo de escuela inclusiva ni se ha generado en los profesores una clara voluntad para fomentar una escuela donde todos puedan trabajar juntos. El camino hacia la inclusión educativa es largo y requiere que diferentes perfiles profesionales trabajen colaborativamente creando una red de apoyo y recursos que hagan posible una escolaridad de calidad.
- Published
- 2012
27. Comparison of the Antifungal effect of Licorice Root, Althoca Officinalis Extracts and Ketoconazole on Malassezia Furfur
- Author
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Y Motaharinia, MA Rezaee, F Zandi, W Hosseini, A Rashidi, M Ahmadi neaz, E AminiPour, and MR Rahmani
- Subjects
Malassezia furfur ,Ketoconazole ,Althoca officinalis ,Licorice ,Medicine (General) ,R5-920 - Abstract
Background & Aim: Malassezia furfur is a lipophilic yeast and is known as the agent of skin diseases, especially tinea versicolor. The aim of this study was to compare the antifungal effect of licorice root, Althoca officinalis extracts and ketoconazole on Malassezia furfur. Methods: In this study, the antifungal effect of ethanolic extracts of Althoca officinalis root and licorice and ketoconazole on Malassezia furfur was evaluated by broth dilution method. The minimum inhibitory concentration (MIC) and minimum concentration of fatality (MFC) for each of the compounds was calculated according to visual reading and the number of fungal colonies (CFU) compared with the control group. The gathered data were analyzed using Mann-Whitney test. Results: MIC range of Althoca officinalis flower, Althoca officinalis root, licorice root extracts and ketoconazole was determined as: 18.25, 300, 500 and 2.65 µg/ml. MFC range for extracts of Althoca officinalis flower and ketoconazole was determined as: 50 ≤ and 32 ≤ µg/ml. Conclusion: The present study showed that Althoca officinalis flower extract compared with the Althoca officinalis root and licorice root extracts have a higher antifungal effect. Also ketoconazole, compared with these extracts, have a high antifungal effect on Malassezia furfur.
- Published
- 2011
28. Efeitos da água salina e da adubação azotada na composição foliar em macronutrientes e na produção do sorgo sacarino Influence of saline water and nitrogen application on leaf nutrient concentrations and yield of sweet sorghum
- Author
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Mª Graça Serrão, Mª Regina Menino, Mª Ermelinda Lourenço, Manuel Luis Fernandes, Nádia Castanheira, Adélia Varela, Tiago Ramos, José Casimiro Martins, Fernando Pires, and Mª Conceição Gonçalves
- Subjects
azoto ,fertirrega ,NaCl ,matéria seca ,sorgo sacarino ,dry matter ,fertigation ,nitrogen ,sweet sorghum ,Agriculture - Abstract
Avaliou-se o efeito das combinações de quatro níveis diferenciados de N com três níveis de NaCl, veiculados ao solo pela água de rega, nas concentrações foliares de N, P, K, Ca, Mg e Na em sorgo sacarino (Sorghum bicolor ssp. saccharatum), em dois anos consecutivos de um ensaio instalado num Fluvissolo Êutrico, em Alvalade-Sado, provido de um sistema de rega gota-a-gota ("Fonte tripla linear"). Pesquisaram-se relações entre os teores foliares dos nutrientes e a produção de matéria seca (caules, folhas + panículas e total) e entre níveis de N e de NaCl e teores foliares médios de nutrientes. Foi a disponibilidade do azoto no solo que, mais do que a salinidade, afetou a absorção de nutrientes, com reflexo nos teores foliares e na produção. O teor foliar de N foi o melhor indicador na previsão da produção de caules do sorgo sacarino.We evaluated the influence of the combinations of four N levels with three NaCl levels, applied through irrigation, on leaf N, P, K, Ca, Mg, and Na concentrations of sweet sorghum (Sorghum bicolor ssp. saccharatum), in two consecutive years of an experiment established on a Eutric Fluvisol in Alvalade-Sado region, equipped with a drip irrigation system ("Triple Linear Source"). The relationships between leaf nutrient concentrations and dry matter production (stems, leaves, and aerial biomass), and between N and NaCl levels and the leaf nutrient concentrations were also searched. It was nitrogen availability in soil that, more than salinity, affected nutrient uptake, with reflexes on the leaf concentrations and the yields. Leaf N concentration was the best indicator for predicting the stems production of sweet sorghum.
- Published
- 2011
29. Relationship between surgical time and postoperative
- Author
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MA Ren-shi, GU Gui-shan, WANG Cheng-xue, ZHU Dong, and ZHANG Xi-zheng
- Subjects
Medicine (General) ,R5-920 - Abstract
Hip fractures, including femoral neck, intertrochanteric, acetabular, femoral head, and subintertrochanteric fractures, are very common clinically. Among them, femoral neck fracture and intertrochanteric fracture are the most common types of fractures (over 90%).1Comparingwith hip fracture in young patients, there are some special characteristics in senile patients: (1) The patients usually suffer from osteoporosis. (2) They need long-time rehabilitation in bed, whichmay lead to severe complications, such as hypostatic pneumonia, urinary tract infection, pressure ulcer, and deep venous thrombosis of lower limb.(3) Themortality after injury is quite high. Therefore, as a rule, orthopedic surgeons preferably choose surgical means to treat these patients.
- Published
- 2010
30. Effect of Various Concentrations of Inhibitors on the Expression of Chemokine Ip-10/Mob-1
- Author
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A Dickson, R Vaziri, MA Rezvani, AA Pourshanazari, MR Mirzaee, MR Hajizadeh, and GH Hassanshahi-Raviz
- Subjects
CXC chemokine ,IP-10/Mob-1 ,Hepatocyte ,SB203580 ,MG132 ,KN62 ,Staurosporine ,Medicine (General) ,R5-920 - Abstract
Introduction: Chemokines are low molecular weight proteins (8-17kDa) with the main role of immune cells recruitment to injured tissues. IP-10/Mob-1 is a CXC chemokine and different cell systems in response to external stimulation produce this chemokine. Various signaling pathways are used by cell and tissue systems to regulate production of proteins e.g. chemokines. Therefore we have investigated some of these pathways leading to production of IP-10/Mob-1 by primary cultured hepatocytes. Methods: In the present study, hepatocyts were isolated from male Sprague Dawley rats and cultured on Waymouth medium in presence and absence of different inhibitors such as SB203580, MG132, KN62 and Staurosporine for indicated time points. Supernatant medium of culture was centrifuged and proteins were isolated by SDS-PAGE and transferred to nitrocellulose membranes, then membranes were incubated with IP-10/Mob-1 antibody overnight and followed by incubation with secondary antibody and then IP-10/Mob-1 was detected by ECL. Results: We showed that the expression of IP-10/Mob-1 has been decreased in presence of Staurosporine (10 and 50μM), SB203580(50μM) MG132 (20μM) and KN62 (10 and 20μM) but did not change in absence or lower concentrations of these inhibitors. Conclusion: Hence, these in vitro data may aid to a better understanding of the pathways in chronic liver injuries and identify clinical studies that may aid in treatment or prevention of these conditions. Furthermore, there may be further potential to prevent changes to hepatocyte phenotype and allow isolation of hepatocytes with a greater physiological phenotype. Therefore it could be concluded that all of these pathways are used by hepatocytes regarding expression of IP-10/Mob-1.
- Published
- 2007
31. III. Literatura, filosofía y religión
- Author
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Juan Antonio Álvarez-Pedrosa Núñez, Francisco L. Lisi, Mª Regla Fernández Garrido, Dulce Estefanía, Cecilia Criado, and Felipe G. Hernández Muñoz
- Subjects
Philology. Linguistics ,P1-1091 - Published
- 2004
32. I. Ediciones y técnica filológica - II. Lingüística
- Author
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Helena Rodríguez Somolinos, Juan J. Martos, Mª Regla Fernández Garrido, and Juan José Carracedo Doval
- Subjects
Philology. Linguistics ,P1-1091 - Published
- 2004
33. Bioluminescence-based high-throughput screen identifies pharmacological agents that target neurotransmitter signaling in small cell lung carcinoma.
- Author
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Ma Reina D Improgo, Christopher W Johnson, Andrew R Tapper, and Paul D Gardner
- Subjects
Medicine ,Science - Abstract
BACKGROUND: Frontline treatment of small cell lung carcinoma (SCLC) relies heavily on chemotherapeutic agents and radiation therapy. Though SCLC patients respond well to initial cycles of chemotherapy, they eventually develop resistance. Identification of novel therapies against SCLC is therefore imperative. METHODS AND FINDINGS: We have designed a bioluminescence-based cell viability assay for high-throughput screening of anti-SCLC agents. The assay was first validated via standard pharmacological agents and RNA interference using two human SCLC cell lines. We then utilized the assay in a high-throughput screen using the LOPAC(1280) compound library. The screening identified several drugs that target classic cancer signaling pathways as well as neuroendocrine markers in SCLC. In particular, perturbation of dopaminergic and serotonergic signaling inhibits SCLC cell viability. CONCLUSIONS: The convergence of our pharmacological data with key SCLC pathway components reiterates the importance of neurotransmitter signaling in SCLC etiology and points to possible leads for drug development.
- Published
- 2011
- Full Text
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34. Reseñas informativas
- Author
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Jesús Raúl Navarro García, Alberto José Gullón Abao, Rosa María Guillén Serrano, Juan Manuel Cabello Benítez, Luisa Zahíno Peñafort, José Angel Mauriño Márquez, Mª Remedios Tasset Carmona, José María García Recio, Ana Miriam Muñiz Rodríguez, Carmen Cebrián González, María del Valle Borrem Silva, Mª Cruz Picazo Pérez, Isabel Arenas Frutos, Mª Antonia Durán Montero, Mª Milagros Ciudad Suárez, Mª Jesús Orozco Vera, and Francisca Noguerol Jiménez
- Subjects
Latin America. Spanish America ,F1201-3799 - Abstract
No disponible.
- Published
- 1993
35. Phenanthrene and nitrite effects on juvenile sea bass, Dicentrarchus labrax, using hepatic biotransformation enzymes, biliary fluorescence, and micronuclei as biomarkers
- Author
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MA Reis-Henriques, M Ferreira, AM Coimbra, C D D'Silva, J Costa, and MS Shailaja
- Subjects
biotransformation enzymes ,micronucleus ,nitrite ,phenanthrene ,polycyclic aromatic hydrocarbons ,Biology (General) ,QH301-705.5 - Abstract
Aquatic organisms may absorb organic compounds mainly from water and by ingestion of contaminated food. The toxicity of such compounds may be intensified by the presence of certain inorganic compounds such as nitrite (NO2–). In order to evaluate the effect of phenanthrene (PHE), a polycyclic aromatic hydrocarbon, in the presence and absence of NO2–, juvenile sea bass, Dicentrarchus labrax L, were exposed to PHE i.p. and to NO2– in water, and several endpoints were measured at days 1, 3, and 6 of exposure. Sea bass exposed to PHE exhibited lower hepatic 7-ethoxyresorufin O-deethylase (EROD) activity as compared to the control group. The activity of the phase II enzyme, glutathione S-transferase (GST), was similar in all the groups of fish. The concentration of PHE metabolites, determined as fluorescent aromatic compounds, was nearly 14 times higher both in the presence and absence of NO2–, showing that even at low EROD activities this PAH is metabolized. The presence of micronuclei was observed to be significantly higher only in sea bass treated with PHE alone, suggesting that different PHE metabolites, without genotoxic properties, were formed in the presence of NO2–.
- Published
- 2009
- Full Text
- View/download PDF
36. Análisis de la sensibilización de los jóvenes ante la seguridad vial. Bases para la elaboración de un programa. [Analysis of road safety awareness in young people. Bases for the development of a road safety programme]
- Author
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Mª Reina Ferrández, Silvia Mª Callejo, Sonia Ibáñez, and Jesús Vicente Vidal
- Subjects
Attitudes ,road safety ,programme assessment ,Cluster analysis ,Factor analysis Actitudes ,seguridad vial ,evaluación de programas ,Análisis de Conglomerados ,Análisis Factorial ,Theory and practice of education ,LB5-3640 - Abstract
This research aims to establish the foundations for a traffic accident prevention programme, based on a study of specific circumstances. To this end, we analysed awareness of road safety measure use in young people according to three variables; whether they had any experience of an accident; if so, how serious the accident was, and how close the kinship relation was to the person who had the accident. The findings did not confirm our expectations, but showed that awareness is not clearly related to any of these three variables, except where either a brother or sister was involved in the accident and when the accident was not serious. Con nuestra investigación pretendemos aproximar las bases para el diseño de un programa de prevención de accidentes, a partir del estudio de una realidad concreta. Para ello hemos analizado la sensibilización hacia el uso de medidas de seguridad vial en adolescentes en función de tres variables: la vivencia o no de un accidente, la gravedad del mismo y el grado de parentesco. Los resultados obtenidos, en contra de lo esperado, constatan que la sensibilización no está relacionada inequívocamente con ellas, a excepción de los hermanos en cuanto al grado de parentesco y leve en cuanto a la gravedad.
- Published
- 2006
37. Psoriasis y síndrome metabólico: Estudio retrospectivo sobre 22 casos Psoriasis And Metabolic Syndrome: Retrospective Study About 22 Clinical Cases
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E Carbo Amoroso, V Leban, D Federico, ME Williner, MG Díaz, MV Guardati, JT Weidmann, MA Reyes, and JL Iribas
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Psoriasis ,Síndrome metabólico ,Resistencia a la insulina ,Metabolic syndrome ,Insulin resistance ,Medicine ,Dermatology ,RL1-803 - Abstract
La Psoriasis es una enfermedad crónica inmunomediada, que se caracteriza por lesiones eritematoescamosas, asociada en ocasiones con afectación articular. Existe una gran cantidad de evidencia que demuestra, un proceso inflamatorio sistémico subyacente patogénico. Un nuevo patrón de respuesta de linfocitos T se ha propuesto como es la Th17, acompañando a una respuesta Th1 y una posible disfunción de células T reguladoras. En los últimos años se la asociado a otros procesos inflamatorios crónicos como: la enfermedad de Crohn, EPOC, síndrome metabólico, arterioesclerosis y sus complicaciones cardiovasculares. El objetivo de nuestro trabajo fue evaluar la severidad de los pacientes con Psoriasis que concurren al consultorio de Dermatología, en el Hospital Cullen de la ciudad de Santa Fe, Argentina y determinar la prevalencia de aquellos con Síndrome metabólico. Para determinar la extensión / severidad de la enfermedad se utilizó el score de PASI y para el diagnóstico del Síndrome metabólico la definición de ATPIII. El 36% de los participantes se incluyeron dentro de la definición de la enfermedad, al cumplir con tres de los cinco criterios para su diagnóstico. A partir de los datos aportados sugerimos el screening de factores de riesgo cardiovasculares, en pacientes con Psoriasis.Psoriasis is a chronic, immune mediated disease, characterized by erythematous scamous lesions, often associated with articular involvement. A large body of evidence demonstrates an underlying systemic inflammatory process, which is pathogenic. A new pattern of response of Th17 lymphocytes has been proposed as the accompanying Th1 and a possible dysfunction of regulatory Tcells. In recent years, the association with other chronic inflammatory conditions such as Crohn's disease, COPD, metabolic syndrome, atherosclerosis and cardiovascular complications. The aim of our study was to assess the severity of psoriasis patients who fulfilled the office of Dermatology at the Cullen Hospital of Santa Fe - Argentina and to determine the prevalence of those with metabolic syndrome. To determine the extent / severity of disease was used PASI score and the diagnosis of metabolic syndrome using the ATPIII definition. The 36% of participants were included within the definition of the disease for meet three of the five criteria for its diagnosis. From the data, we suggest the screening of cardiovascular risk factors in psoriasis patients.
- Published
- 2010
38. Impacts of climate change on the Bay of Seine ecosystem: Forcing a spatio‐temporal trophic model with predictions from an ecological niche model
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Quentin Nogues, Samantha Grusd, Aurore Raoux, Georges Safi, Emma Araignous, Tarek Hattab, Boris Leroy, Pierre Bourdaud, Frida Ben Rais Lasram, Juliette Champagnat, Nathalie Niquil, Ghassen Halouani, Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG), Centre National de la Recherche Scientifique (CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Institut national des sciences de l'Univers (INSU - CNRS), France Energies Marines [Brest], Marine Research Institute, University of Cape Town, Rondebosch, South Africa ( MA-RE), University of Cape Town, Department of Biological Sciences, Rondebosch 7701, South Africa, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Ifremer, Laboratory of Fisheries Resources, Boulogne-Sur-Mer, France, MARine Biodiversity Exploitation and Conservation (UMR MARBEC), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut de Recherche pour le Développement (IRD), Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Musée National d'Histoire Naturelle de Luxembourg (MNHN), Normandie Université (NU), Morphodynamique Continentale et Côtière (M2C), Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Nord]), Université du Littoral Côte d'Opale (ULCO), Laboratoire Ressources halieutiques Boulogne sur mer (LRHBL), Halieutique Manche Mer du Nord (HMMN), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), and Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)
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0106 biological sciences ,Ecological niche ,Ecospace ,010604 marine biology & hydrobiology ,Climate change ,Forcing (mathematics) ,Aquatic Science ,Oceanography ,010603 evolutionary biology ,01 natural sciences ,climate change ,13. Climate action ,ecological niche modelling ,fisheries ,Environmental science ,Ecosystem ,14. Life underwater ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,Bay ,ComputingMilieux_MISCELLANEOUS ,Trophic level ,trophic interactions - Abstract
(IF 2.67; Q1); International audience; Climate change is already known to cause irreversible impacts on ecosystems that are difficult to accurately predict due to the multiple scales at which it will interact. Predictions at the community level are mainly focused on the future distribution of marine species biomass using ecological niche modelling, which requires extensive efforts concerning the effects that trophic interactions could have on the realized species dynamics. In this study, a set of species distribution models predictions were used to force the spatially-explicit trophic model Ecospace in order to evaluate the potentials impacts that two 2,100 climate scenarios, RCP2.6 and RCP8.5, could have on a highly exploited ecosystem, the Bay of Seine (France). Simulations demonstrated that both scenarios would influence the community of the Bay of Seine ecosystem: as expected, more intense changes were predicted with the extreme scenario RCP8.5 than with the RCP2.6 scenario. Under both scenarios, a majority of species underwent a decrease of biomass, although some increased. However, in both cases the stability of the majority of species dynamics was lowered, the sustainability of the fishery. Differences between niche modelling predictions and those obtained through the forcing in Ecospace highlighted the paramount importance of considering trophic interactions in climate change simulations. These results illustrate the requirement of multiplying novel approaches for efficiently forecasting potential impacts of climate change.
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- 2021
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39. Sentinels to climate change. The need for monitoring at South Africa’s Subantarctic laboratory
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Jonathan V. Durgadoo, Anne M. Treasure, Isabelle J. Ansorge, Marine Research (MA-RE) Institute, and Faculty of Science
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Antarctic Circumpolar Current ,Biodiversity ,Climate change ,Marine life ,General Biochemistry, Genetics and Molecular Biology ,lcsh:Social Sciences ,Subantarctic Front ,Marine ecosystem ,Ecosystem ,14. Life underwater ,oceanography ,lcsh:Social sciences (General) ,lcsh:Science ,lcsh:Science (General) ,Apex predator ,Polar front ,Ecology ,15. Life on land ,Prince Edward Islands ,lcsh:H ,Sea surface temperature ,climate change ,Oceanography ,Geography ,13. Climate action ,General Earth and Planetary Sciences ,lcsh:Q ,lcsh:H1-99 ,General Agricultural and Biological Sciences ,lcsh:Q1-390 - Abstract
Subantarctic islands form ideal sentinels to climate change. These islands support terrestrial and marine ecosystems that are relatively simple and extremely sensitive to perturbations. They provide an ideal natural laboratory for studying how ecosystems respond to a changing climate in the Southern Ocean. Initial studies and subsequent analyses at the Prince Edward Islands in the Indian sector of the Southern Ocean have all shown that there has been a climatological rise of >1°C in the sea surface temperature since 1949. Mirrored to this rise is a decrease in rain, an increase in extreme events, an increase in winds from the warmer sector in the northwest, and annual sunshine hours have risen by 3.3 h since the 1950s. It has been proposed that climate changes reported at the Prince Edward Islands correspond in time to a southward shift of the Antarctic Circumpolar Current (ACC) and in particular its frontal systems the Subantarctic Front (SAF) and the Antarctic Polar Front (APF), between which the islands lie (Figure 1). The Prince Edward Islands, like many other oceanic islands within the Southern Ocean, are seasonally characterised by vast populations of marine organisms and a diversity and abundance of seabirds that use the islands as breeding grounds. It is estimated that the islands support over 5 million breeding pairs of top predators including seabirds, penguins and seals during the peak breeding season. The energy necessary to sustain these top predators is derived from the close interaction between the oceanic environment and the islands themselves. Changes in the intensity and geographic position within these frontal systems are likely to coincide with dramatic changes in the distribution of species and total productivity within the Southern Ocean. Long-term research in both the offshore and near-shore environments of the Prince Edward Islands is critical if the mechanisms needed to sustain high concentrations of marine life in a changing environment are to be better understood and conserved. If ecosystems are pushed beyond certain thresholds or tipping points, there is a high risk of dramatic biodiversity loss and accompanying degradation of a broad range of ecosystem services. Furthermore, a real threat brought on by a warmer climate will be the increase in ease in which pristine Subantarctic islands such as the Prince Edward Islands can be invaded by alien species.
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- 2017
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40. Making ecological indicators management ready: Assessing the specificity, sensitivity, and threshold response of ecological indicators
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Ekin Akoglu, Yi Xu, Laure Velez, Caihong Fu, Christopher P. Lynam, Alida Bundy, Elizabeth A. Fulton, Lynne J. Shannon, Johanna J. Heymans, Yunne-Jai Shin, Ghassen Halouani, Arnaud Grüss, Marta Coll, National Research Foundation (South Africa), Beaufort Marine Research Award, European Commission, Institut de Recherche pour le Développement (France), Intergovernmental Oceanographic Commission of UNESCO, European Marine Research Network, Fisheries and Oceans Canada, National Oceanic and Atmospheric Administration (US), Fisheries and Oceans Canada (DFO), Institute of Marine Sciences / Institut de Ciències del Mar [Barcelona] (ICM), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Ecosystèmes et Ressources Aquatiques (UR03AGRO1), Institut National Agronomique de Tunisie, Université de Montpellier (UM), MARine Biodiversity Exploitation and Conservation (UMR MARBEC), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Istituto Nazionale di Geofisica e di Oceanografia Sperimentale (OGS), Centre for Environment, Fisheries and Aquaculture Science [Lowestoft] (CEFAS), Institut océanographique Bedford - Bedford Oceanographic Institute [Dartmouth, Canada] (IOB), School of Aquatic and Fishery Sciences (University of Washington), Scottish Association for Marine Science (SAMS), European Marine Board, CSIRO Marine and Atmosphere Research [Hobart], Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), Institute for Marine and Antarctic Studies and Centre for Marine Socioecology, University of Tasmania [Hobart, Australia] (UTAS), Marine Research Institute, University of Cape Town, Rondebosch, South Africa ( MA-RE), Institute of Marine Sciences [Erdemli-Mersin] (IMS), and Middle East Technical University [Ankara] (METU)
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random forests ,0106 biological sciences ,regime-shifts ,sea ,fishing impacts ,Maximum sustainable yield ,Fishing ,Indictor performance ,General Decision Sciences ,Gradient forest method ,010501 environmental sciences ,010603 evolutionary biology ,01 natural sciences ,[SDV.EE.ECO]Life Sciences [q-bio]/Ecology, environment/Ecosystems ,framework ,Marine ecosystem ,EcoSim ,14. Life underwater ,Ecology, Evolution, Behavior and Systematics ,0105 earth and related environmental sciences ,Trophic level ,Ecological modelling ,Biomass (ecology) ,Ecology ,southern benguela ,Fishery ,Ecological indicator ,shelf ,marine ecosystem ,13. Climate action ,fisheries ,Primary productivity ,environmental drivers ,Environmental science ,Fishing pressure ,Fisheries management ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology - Abstract
13 pages, 7 figures, 1 table, supplementary data https://doi.org/10.1016/j.ecolind.2019.05.055, Moving toward ecosystem-based fisheries management (EBFM) necessitates a suite of ecological indicators that are responsive to fishing pressure, capable of tracking changes in the state of marine ecosystems, and related to management objectives. In this study, we employed the gradient forest method to assess the performance of 14 key ecological indicators in terms of specificity, sensitivity and the detection of thresholds for EBFM across ten marine ecosystems using four modelling frameworks (Ecopath with Ecosim, OSMOSE, Atlantis, and a multi-species size-spectrum model). Across seven of the ten ecosystems, high specificity to fishing pressure was found for most of the 14 indicators. The indicators biomass to fisheries catch ratio (B/C), mean lifespan and trophic level of fish community were found to have wide utility for evaluating fishing impacts. The biomass indicators, which have been identified as Essential Ocean Variables by the Global Ocean Observing System (GOOS), had lower performance for evaluating fishing impacts, yet they were most sensitive to changes in primary productivity. The indicator B/C was most sensitive to low levels of fishing pressure with a generally consistent threshold response around 0.4*F (fishing mortality rate at maximum sustainable yield) across nine of the ten ecosystems. Over 50% of the 14 indicators had threshold responses at, or below ∼0.6* F for most ecosystems, indicating that these ecosystems would have already crossed a threshold for most indicators when fished at F. This research provides useful insights on the performance of indicators, which contribute to facilitating the worldwide move toward EBFM, This is a contribution to the IndiSeas Working Group, co-funded by IOC-UNESCO (www.ioc-unesco.org) and EuroMarine (http://www.euromarinenetwork.eu), to the project EMIBIOS (FRB, contract no. APP-SCEN-2010-II) and to the IOC-UNESCO GOOS Program and GOOS Biology and Ecosystems Panel. The work on Canada West Coast ecosystem was sponsored by Fisheries & Oceans Canada under the Aquatic Climate Change and Adaptation Services Program. YJS and LV were supported by the project EMIBIOS (FRB, contract no. APP-SCEN-2010-II). AG was supported by NOAA’s Integrated Ecosystem Assessment (IEA) program (http://www.noaa.gov/iea/). LJS was supported by IRD, France, and through the South African Research Chair Initiative, funded through the South African Department of Science and Technology (DST) and administered by the South African National Research Foundation (NRF). JEH was supported by a Beaufort Marine Research Award carried out under the Sea Change Strategy and the Strategy for Science Technology and Innovation (2006-2013), with the support of the Marine Institute, funded under the Marine Research Sub-Programme of the Irish National Development Plan 2007-2013. MC was supported by the Marie Curie Career Integration Grant Fellowships – PCIG10-GA-2011-303534 - to the BIOWEB project. All other authors were supported by their respective affiliations
- Published
- 2019
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41. From no whinge scenarios to viability tree
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Astrid Jarre, Christophe Béné, Nicolas Sanz, Leo X.C. Dutra, Felipe Gusmão, Stefan Baumgärtner, Debora M. de Freitas, Arne Eide, Olivier Thébaud, Martin F. Quaas, Luc Doyen, Sophie Gourguet, L.R. Little, E. Régnier, Claire Macher, Rachel Cooper, Abdoul Ahad Cisse, Claire W. Armstrong, Fabian Blanchard, P.-Y. Hardy, Groupe de Recherche en Economie Théorique et Appliquée (GREThA), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), The Arctic University of Norway (UiT), University of Freiburg [Freiburg], International Center for Tropical Agriculture [Colombie] (CIAT), Consultative Group on International Agricultural Research [CGIAR] (CGIAR), Laboratoire Ecologie, Evolution, Interactions des Systèmes amazoniens (LEEISA), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Guyane (UG)-Centre National de la Recherche Scientifique (CNRS), Aménagement des Usages des Ressources et des Espaces marins et littoraux - Centre de droit et d'économie de la mer (AMURE), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Marine Research (MA-RE) Institute, University of Cape Town, Oceans and Atmosphere Flagship [Brisbane], Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), University of the South Pacific (USP), University of Tasmania [Hobart, Australia] (UTAS), University of Tromsø (UiT), Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University (UNESP), Federal University of Sao Paulo (Unifesp), CSIRO Oceans and Atmosphere [Hobart], Université de Leipzig, Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB), Centre National de la Recherche Scientifique (CNRS)-Université de Guyane (UG)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), University of Bordeaux, University Tromsoe, University of Friburg, Decision and Policy Analysis Program, UMR IFREMER-CNRS-University of Cayenne, Universidade Estadual Paulista (Unesp), Universidade de São Paulo (USP), Oceans and Atmosphere, Département d'Economie Maritime, University of Leipzig, The University of the South Pacific, University of Tasmania, The Arctic University of Norway [Tromsø, Norway] (UiT), and Leipzig University
- Subjects
Minimal whinge ,Economics and Econometrics ,010504 meteorology & atmospheric sciences ,Computer science ,Biodiversity ,010501 environmental sciences ,01 natural sciences ,12. Responsible consumption ,Ecosystem services ,Scenarios ,11. Sustainability ,Ecosystem ,14. Life underwater ,Viability kernel ,0105 earth and related environmental sciences ,General Environmental Science ,Sustainable development ,Ecological economics ,Modeling ,15. Life on land ,Environmental economics ,Modeling Sustainability ,Identification (information) ,Tree (data structure) ,Sustainability ,13. Climate action ,[SDE]Environmental Sciences ,Safe operating space - Abstract
Made available in DSpace on 2019-10-06T15:44:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-09-01 Centre Elile Borel, Institut Henri-Poincaré Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Avoiding whinges from various and potentially conflicting stakeholders is a major challenge for sustainable development and for the identification of sustainability scenarios or policies for biodiversity and ecosystem services. It turns out that independently complying with whinge thresholds and constraints of these stakeholders is not sufficient because dynamic ecological-economic interactions and uncertainties occur. Thus more demanding no whinge standards are needed. In this paper, we first argue that these new boundaries can be endogenously exhibited with the mathematical concepts of viability kernel and viable controls. Second, it is shown how these no whinge kernels have components, such as harvesting of resources, that should remain within safe corridor while some other components, in particular biodiversity, have only lower conservation limits. Thus, using radar charts, we show how this no whinge kernels can take the shape of a tree that we name viability tree. These trees of viability capture the idea that the unbounded renewal potential of biodiversity combined with a bounded use of the different ecosystem services are crucial ingredients for the sustainability of socio-ecosystems and the design of no whinge policies reconciling the different stakeholders involved. GREThA CNRS University of Bordeaux UiT Norwegian College of Fishery Science University Tromsoe Environmental Economics and Resource Management University of Friburg CIAT Decision and Policy Analysis Program LEEISA UMR IFREMER-CNRS-University of Cayenne MARE Institute University of Cape Town State University of São Paulo UNESP, Coastal Campus FAPESP & Instituto do Mar Federal University of Sao Paulo CSIRO Oceans and Atmosphere IFREMER UMR AMURE Département d'Economie Maritime Department of Economics and iDiv University of Leipzig School of Marine Studies The University of the South Pacific Centre for Marine Socioecology University of Tasmania State University of São Paulo UNESP, Coastal Campus
- Published
- 2019
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42. Seasonality of the Agulhas Current with respect to near- and far-field winds
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Hutchinson, Katherine, Penven, Pierrick, Beal, Lisa, Ansorge, Isabel, Hermes, Juliet, Marine Research (MA-RE) Institute, and Faculty of Science
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Agulhas Current ,marine - Abstract
The Agulhas Current plays a critical role in both local and global ocean circulation and climate regulation, yet the mechanisms that determine the seasonal cycle of the current remain poorly understood. Model studies predict an austral winter-spring maximum in poleward volume transport, whilst observations reveal an austral summertime (February-March) maximum. Here, the role of winds on Agulhas Current seasonality is investigated using shallow water models, satellite measurements, and a 23-year transport proxy based on observations. A one-and-a-half layer reduced gravity model is shown to successfully reproduce the seasonal phasing of the current. This seasonality is found to be highly sensitive to the propagation speed of Rossby waves, which determines the arrival time of the wind stress signal at the western boundary. By matching Rossby wave speeds to those observed using altimetry, an Agulhas Current with a maximum flow in February and a minimum flow in July is simulated, agreeing well with observations. Near-field winds, to the west of 35◦E, dominate this seasonality, as signals from more remote wind forcing dissipate due to destructive interference while crossing the basin. Local winds driving coastal upwelling/downwelling directly over the Agulhas cannot, alone, account for the observed seasonal phasing, as they force a NovemberDecember maximum and June minimum in flow. The seasonal response to Indian Ocean winds is also investigated using a barotropic (single layer) model with realistic topography. A barotropic adjustment cannot explain the observed Agulhas Current seasonality, predicting a wintertime maximum in transport. The results from the barotropic simulation are similar to previous model studies, where seasonality is dominated by a southward propagation of signals via the Mozambique Channel, suggesting that these models are too barotopic in their response to the winds. Findings from this study elucidate the role of near-field winds and baroclinic processes in determining the seasonality of the Agulhas Current.
- Published
- 2018
43. A case study from the southern Cape linefishery 1: The difficulty of fishing in a changing world
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Gammage, Louise C, Mather, Charles, Marine Research (MA-RE) Institute, and Faculty of Science
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climate change ,social-ecological systems ,vulnerability ,small-scale fisheries ,stressors - Abstract
Variability on multiple temporal and spatial scales exposes fishers and fishing communities to multiple stressors. The impact and interplay of these stressors need to be considered to improve our understanding of social-ecological linkages if sustainable livelihoods are to be promoted. To this end, participant-led research was conducted in the small-scale traditional commercial linefishery of the southern Cape (South Africa) between Witsand and Mossel Bay. Knowledge and perceptions regarding stressors responsible for changes in the social-ecological system, which ultimately affect the fishers’ ability to fish successfully, were recorded using semi-formal interviews and focus groups with 50 participants. The results presented not only offer valuable insights into the day-to-day experiences of these fishers, but also expose knowledge gaps that exist in micro-scale interactions influencing the fishery system. An analysis of various stressors is presented, which includes the impacts of and responses to climate variability; challenges presented by fisheries policies and regulatory frameworks; social and economic considerations; inadequate infrastructure; and general political considerations. The development of a more comprehensive understanding of stressors that affect the social-ecological system at various scales provides valuable insights into a fishery system that is currently not well described, and provides the basis for analyses into vulnerability and resilience.
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- 2017
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44. Synoptic relationships between surface Chlorophyll-a and diagnostic pigments specific to phytoplankton functional types
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Hirata, T, Hardman-Mountford, N J, Brewin, R J W, Aiken, J, Barlow, R, Suzuki, K, Isada, T, Howell, E, Hashioka, T, Noguchi-Aita, M, Yamanaka, Y, Marine Research (MA-RE) Institute, and Faculty of Science
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QE1-996.5 ,QH301-705.5 ,Science ,lcsh:QE1-996.5 ,lcsh:Life ,Geology ,DOAJ:Earth Sciences ,DOAJ:Biology and Life Sciences ,lcsh:Geology ,lcsh:QH501-531 ,DOAJ:Earth and Environmental Sciences ,lcsh:QH540-549.5 ,lcsh:Ecology ,Biology (General) ,DOAJ:Biology - Abstract
Error-quantified, synoptic-scale relationships between chlorophyll-a (Chl-a) and phytoplankton pigment groups at the sea surface are presented. A total of ten pigment groups were considered to represent three Phytoplankton Size Classes (PSCs, micro-, nano- and picoplankton) and seven Phytoplankton Functional Types (PFTs, i.e. diatoms, dinoflagellates, green algae, prymnesiophytes (haptophytes), pico-eukaryotes, prokaryotes and Prochlorococcus sp.). The observed relationships between Chl-a and PSCs/PFTs were well-defined at the global scale to show that a community shift of phytoplankton at the basin and global scales is reflected by a change in Chl-a of the total community. Thus, Chl-a of the total community can be used as an index of not only phytoplankton biomass but also of their community structure. Within these relationships, we also found non-monotonic variations with Chl-a for certain pico-sized phytoplankton (pico-eukaryotes, Prokaryotes and Prochlorococcus sp.) and nano-sized phytoplankton (Green algae, prymnesiophytes). The relationships were quantified with a least-square fitting approach in order to enable an estimation of the PFTs from Chl-a where PFTs are expressed as a percentage of the total Chl-a. The estimated uncertainty of the relationships depends on both PFT and Chl-a concentration. Maximum uncertainty of 31.8% was found for diatoms at Chl-a = 0.49 mg m−3. However, the mean uncertainty of the relationships over all PFTs was 5.9% over the entire Chl-a range observed in situ (0.02 < Chl-a < 4.26 mg m−3). The relationships were applied to SeaWiFS satellite Chl-a data from 1998 to 2009 to show the global climatological fields of the surface distribution of PFTs. Results show that microplankton are present in the mid and high latitudes, constituting only ~10.9% of the entire phytoplankton community in the mean field for 1998–2009, in which diatoms explain ~7.5%. Nanoplankton are ubiquitous throughout the global surface oceans, except the subtropical gyres, constituting ~45.5%, of which prymnesiophytes (haptophytes) are the major group explaining ~31.7% while green algae contribute ~13.9%. Picoplankton are dominant in the subtropical gyres, but constitute ~43.6% globally, of which prokaryotes are the major group explaining ~26.5% (Prochlorococcus sp. explaining 22.8%), while pico-eukaryotes explain ~17.2% and are relatively abundant in the South Pacific. These results may be of use to evaluate global marine ecosystem models.
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- 2011
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45. Patterns of Distribution and Spatial Indicators of Ecosystem Change Based on Key Species in the Southern Benguela
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Astrid Jarre, Kate E. Watermeyer, L. Hutchings, Lynne J. Shannon, Marine Research (MA-RE) Institute, and Faculty of Science
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0106 biological sciences ,010504 meteorology & atmospheric sciences ,Environmental change ,Predation ,lcsh:Medicine ,01 natural sciences ,South Africa ,Chub mackerel ,Anchovy ,Biomass ,lcsh:Science ,Trophic level ,Mammals ,Biomass (ecology) ,Multidisciplinary ,biology ,Ecology ,Fishes ,Agriculture ,Trophic Interactions ,Geography ,Community Ecology ,Osteichthyes ,Vertebrates ,Research Article ,Ecological Metrics ,Biomass (Ecology) ,Equines ,Fisheries ,Ecosystems ,Engraulis ,Species Specificity ,Animals ,Ecosystem ,Horses ,0105 earth and related environmental sciences ,Tuna ,010604 marine biology & hydrobiology ,Ecology and Environmental Sciences ,lcsh:R ,Organisms ,Biology and Life Sciences ,Pelagic zone ,biology.organism_classification ,Fishery ,Species Interactions ,Predatory Behavior ,Amniotes ,lcsh:Q - Abstract
Several commercially and ecologically important species in the southern Benguela have undergone southward and eastward shifts in their distributions over previous decades, most notably the small pelagic fish sardine Sardinops sagax and anchovy Engraulis encrasicolus . Understanding these changes and their implications is essential in implementing an ecosystem approach to fisheries in the southern Benguela and attempting to appreciate the potential impacts of future environmental change. To investigate possible impacts of these shifts at an ecosystem level, distribution maps for before (1985-1991), during (1997-2000) and after (2003-2008) the shift in small pelagic fish were constructed for 14 key species from catch and survey data, and used to calculate spatial indicators including proportion east and west of Cape Agulhas, relative overlap in biomass and area, index of diversity, connectivity. Potential interactions on the south and west coasts were also compared. For several species (redeye; chub mackerel; kingklip; chokka squid; yellowtail), previously unidentified increases in the proportion of biomass east of Cape Agulhas were shown to have occurred over the same period as that of small pelagic fish, although none to the same degree. On average, overlap with small pelagic fish increased over time and overall system connectivity was lowest in the intermediate period, possibly indicating a system under transition. Connectivity declined over time on the west coast while increasing on the east coast. Distributions of other species have changed over time, with the region east of Cape Agulhas becoming increasingly important in terms of potential trophic interaction. Variations in distribution of biomass and structural complexity affect the trophic structure and hence functioning of the system, and implications should be considered when attempting to identify the possible ecosystem impacts of current and future system-level change.
- Published
- 2016
46. Environmental drivers of coccolithophore abundance and calcification across Drake Passage (Southern Ocean)
- Author
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Poulton, Alex J, Bakker, Dorothee C E, Lucas, Mike I, Stinchcombe, Mark C, Tyrrell, Toby, Marine Research (MA-RE) Institute, and Faculty of Science
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South Africa ,National Health Programs ,Practice Guidelines as Topic ,Humans ,Mass Casualty Incidents ,Disaster Planning ,Burns ,Societies, Medical - Abstract
Although coccolithophores are not as common in the Southern Ocean as they are in sub-polar waters of the North Atlantic, a few species, such as Emiliania huxleyi, are found during the summer months. Little is actually known about the calcite production (CP) of these communities, or how their distribution and physiology relates to environmental variables in this region. In February 2009, we made observations across Drake Passage (between South America and the Antarctic Peninsula) of coccolithophore distribution, CP, primary production, chlorophyll-a and macronutrient concentrations, irradiance and carbonate chemistry. Although CP represented less than 1 % of total carbon fixation, coccolithophores were widespread across Drake Passage. The B/C morphotype of E. huxleyi was the dominant coccolithophore, with low estimates of coccolith calcite (~ 0.01 pmol C coccolith−1) from biometric measurements. Both cell-normalised calcification (0.01–0.16 pmol C cell−1 d−1) and total CP (< 20 μmol C m−3 d−1) were much lower than those observed in the sub-polar North Atlantic where E. huxleyi morphotype A is dominant. However, estimates of coccolith production rates were similar (0.1–1.2 coccoliths cell−1 h−1) to previous measurements made in the sub-polar North Atlantic. A multivariate statistical approach found that temperature and irradiance together were best able to explain the observed variation in species distribution and abundance (Spearman's rank correlation ρ = 0.4, p < 0.01). Rates of calcification per cell and coccolith production, as well as community CP and E. huxleyi abundance, were all positively correlated (p < 0.05) to the strong latitudinal gradient in temperature, irradiance and calcite saturation states across Drake Passage. Broadly, our results lend support to recent suggestions that coccolithophores, especially E. huxleyi, are advancing pole-wards. However, our in situ observations indicate that this may owe more to sea-surface warming and increasing irradiance rather than increasing CO2 concentrations.
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- 2016
- Full Text
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47. The origins of the present: economic conflicts in the fisheries of the South African south coast, circa 1910 to 1950
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Natascha Visser, Marine Research (MA-RE) Institute, and Faculty of Science
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Trawling ,Geography, Planning and Development ,Fishing ,Market access ,Public policy ,Management, Monitoring, Policy and Law ,Development ,Aquatic Science ,Inter-sectoral conflict ,Bottom trawling ,Small-scale fishing policy ,Fishery ,Commercial handline fishing ,Monopolistic competition ,Geography ,Harbour ,Monopoly ,computer ,Bay ,Water Science and Technology ,computer.programming_language - Abstract
This study investigates the historical roots of the conflict between commercial handline and inshore bottom trawl fisheries on the eastern Agulhas Bank off the southern Cape coast. It focuses on the early 20th century, particularly on the regional centre, Mossel Bay, and on Still Bay, a small town which until recently had an important handline kob fishery. The transport opportunities offered by the commercial harbour and railway line encouraged the establishment of industrialized fishing at Mossel Bay. In contrast, the Still Bay fishery originated in the river as a development of the local agricultural economy, only later pushing out to the sea. Marketing was always hampered by the remoteness and the lack of efficient transportation and refrigeration facilities. Although Mossel Bay handliners had access to ice and transportation, the marketing arrangement of the large trawl companies effectively excluded them from entering markets further afield. Monopolistic vertical integration by the country's largest trawling company further deteriorated the situation of the independent small handliners. While government was uncomfortable with the trawling companies' monopolistic practices, it saw the handline sector as a primitive holdover and therefore did not uphold the rights of handline fishers faced with encroachment by trawlers. The Still Bay fishery remained dependent on middlemen, limiting the profitability of the fishery. A tiny fish processing facility operated during WWII, but by and large the regional council sought to maintain the tourism-oriented image of the town. The development of both towns was strongly shaped by government policy and the development of the trawling sector. While the 20th century opened with handlining being the dominant mode of fishing, by the 1950s handline fishing was a marginal economic activity.
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- 2015
- Full Text
- View/download PDF
48. gbpA as a Novel qPCR Target for the Species-Specific Detection of Vibrio cholerae O1, O139, Non-O1/Non-O139 in Environmental, Stool, and Historical Continuous Plankton Recorder Samples
- Author
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Nicholas J. P. Owens, Hans M. Verheye, Luigi Vezzulli, Chiara Grande, Elisabetta Pezzati, Monica Stauder, Carla Pruzzo, Marine Research (MA-RE) Institute, and Faculty of Science
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lcsh:Medicine ,medicine.disease_cause ,Sensitivity and Specificity ,Microbiology ,Vibrio mimicus ,law.invention ,Feces ,Cholera ,law ,Genetic variation ,medicine ,Humans ,Seawater ,14. Life underwater ,lcsh:Science ,Gene ,Vibrio cholerae ,DNA extraction ,Polymerase chain reaction ,Gene amplification ,Multidisciplinary ,biology ,Microbiota ,lcsh:R ,biology.organism_classification ,medicine.disease ,Plankton ,Molecular Typing ,Sea water ,Genes, Bacterial ,biology.protein ,lcsh:Q ,Sediment ,Protein A ,Bacteria ,Research Article - Abstract
The Vibrio cholerae N-acetyl glucosamine-binding protein A (GbpA) is a chitin-binding protein involved in V . cholerae attachment to environmental chitin surfaces and human intestinal cells. We previously investigated the distribution and genetic variations of gbpA in a large collection of V . cholerae strains and found that the gene is consistently present and highly conserved in this species. Primers and probe were designed from the gbpA sequence of V . cholerae and a new Taq-based qPCR protocol was developed for diagnostic detection and quantification of the bacterium in environmental and stool samples. In addition, the positions of primers targeting the gbpA gene region were selected to obtain a short amplified fragment of 206 bp and the protocol was optimized for the analysis of formalin-fixed samples, such as historical Continuous Plankton Recorder (CPR) samples. Overall, the method is sensitive (50 gene copies), highly specific for V . cholerae and failed to amplify strains of the closely-related species Vibrio mimicus . The sensitivity of the assay applied to environmental and stool samples spiked with V . cholerae ATCC 39315 was comparable to that of pure cultures and was of 10 2 genomic units/l for drinking and seawater samples, 10 1 genomic units/g for sediment and 10 2 genomic units/g for bivalve and stool samples. The method also performs well when tested on artificially formalin-fixed and degraded genomic samples and was able to amplify V . cholerae DNA in historical CPR samples, the earliest of which date back to August 1966. The detection of V . cholerae in CPR samples collected in cholera endemic areas such as the Benguela Current Large Marine Ecosystem (BCLME) is of particular significance and represents a proof of concept for the possible use of the CPR technology and the developed qPCR assay in cholera studies.
- Published
- 2015
49. Opening dialogue and fostering collaboration: Different ways of knowing in fisheries research
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Greg L. Duggan, Lesley Green, Astrid Jarre, Jennifer J.M. Rogerson, Marine Research (MA-RE) Institute, Faculty of Science, Social Anthropology, and Faculty of Humanities
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relational approach ,media_common.quotation_subject ,General Biochemistry, Genetics and Molecular Biology ,lcsh:Social Sciences ,Order (exchange) ,Ethnography ,Conversation ,West coast ,Sociology ,lcsh:Social sciences (General) ,Set (psychology) ,lcsh:Science ,lcsh:Science (General) ,media_common ,ethnographic research ,business.industry ,fishers’ knowledge ,Public relations ,lcsh:H ,Work (electrical) ,Embodied cognition ,facilitating dialogue ,artful deletions ,General Earth and Planetary Sciences ,lcsh:Q ,lcsh:H1-99 ,General Agricultural and Biological Sciences ,business ,Fisheries Research ,fishers' knowledge ,lcsh:Q1-390 - Abstract
We set out to explore some of the impediments which hinder effective communication among fishers, fisheries researchers and managers using detailed ethnographic research amongst commercial handline fishers from two sites– one on the southern Cape coast and the other on the west coast of South Africa. Rather than assuming that the knowledge of fishers and scientists is inherently divergent and incompatible, we discuss an emerging relational approach to working with multiple ways of knowing and suggest that this approach might benefit future collaborative endeavours. Three major themes arising from the ethnographic fieldwork findings are explored: different classifications of species and things; bringing enumerative approaches into dialogue with relational approaches; and the challenge of articulating embodied ways of relating to fish and the sea. Although disconcertments arise when apparently incommensurable approaches are brought into dialogue, we suggest that working with multiple ways of knowing is both productive and indeed necessary in the current South African fisheries research and management contexts. The research findings and discussion on opening dialogue offered in this work suggest a need to rethink contemporary approaches to fisheries research in order to mobilise otherwise stagnant conversations, bringing different ways of knowing into productive conversation.
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- 2014
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50. ‘Thinking like a fish’: adaptive strategies for coping with vulnerability and variability emerging from a relational engagement with kob
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Lesley Jf Green, Astrid Jarre, Greg L. Duggan, Marine Research (MA-RE) Institute, and Faculty of Science
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Adaptive strategies ,business.industry ,media_common.quotation_subject ,Geography, Planning and Development ,Environmental resource management ,Ethnography ,Vulnerability ,Management, Monitoring, Policy and Law ,Development ,Aquatic Science ,Fish stock ,Livelihood ,Umwelt ,Mimesis ,Profit (economics) ,Negotiation ,Embodied cognition ,Perspective ,Sustainability ,Sociology ,Variability ,business ,Water Science and Technology ,media_common - Abstract
Based on ethnographic fieldwork amongst a group of commercial handline fishers in the town of Stilbaai in South Africa's southern Cape region, this paper presents a range of flexible, adaptive and evolving strategies through which fishers negotiate constantly shifting variability in weather patterns, fish stocks, fisheries policies, and economic conditions. These variabilities constitute a diverse set of vulnerabilities to which fishers must respond in order to sustain their livelihoods. In this context, the act of 'thinking like a fish' on the part of the fishers provides them with an effective means of adapting to variability and uncertainty. Findings of ethnographic research in 2010-11 suggest that a number of the fishers who participated in the research actively work towards achieving a balance between profit and sustainability. 'Thinking like a fish' is an embodied, interactive way of knowing that emerges from interactions between fishers and fish, offering an ethical and ecological outlook which is a valuable resource for fisheries and conservation management in the region. We suggest that the deeply embodied interactional component of 'thinking like a fish' results from a desire to understand the life world of fish and to think from their perspective in order to more effectively target them while sustaining the species and ecosystem.
- Published
- 2014
- Full Text
- View/download PDF
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