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Copyright of Revista Ciencia y Tecnología Agropecuaria is the property of Agrosavia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Legado de Arquitectura y Diseño is the property of Universidad Autonoma del Estado de Mexico and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The situation in which many labor sectors find themselves today in terms of safety and health is extremely complex. Through a diagnosis, occupational health and safety makes sense and allows the improvement of environmental conditions such as: temperature, humidity, noise, lighting, cleanliness, gases, among others. The objective of this research is to evaluate the lighting system of the production area of the Elaboration Center in the province of Matanzas, Cuba. For the research, an initial diagnosis of the existing lighting level was carried out. The initial measurement was made using a luxmeter and was compared with the values obtained and those recommended by the NC-ISO 8995/CIE S 008: 2003 standard, which establishes the lighting level required for each activity. As a result, insufficient luminosity was obtained in the production area and a new lighting system was designed based on the lumens method to achieve the recommended level. It is proposed to the entity to use 12 lamps with two straight fluorescent tubes of 18 W, T-8, 6500K, distributed in 2 rows and 6 columns. [ABSTRACT FROM AUTHOR]

The purpose of this article is to identify and analyze residence changes of popular sectors in Gran San Miguel de Tucumán, based on three different dimensions: the location of the target neighborhood, the implemented residential trajectories and strategies, and housing characteristics. The Los Vásquez neighborhood was taken as a case study, which is located towards the southeast of the conglomerate, in one of the most degraded areas with poor environmental conditions. This neighborhood is characterized by the presence of popular settlements with high levels of informality, vulnerability and poverty. The study of changes in residence in relation to different socio-spatial variables provides an insight into the dynamics of the social division of space. While groups with sufficient economic income can choose the location and type of housing, vulnerable sectors are faced with multiple constraints to meet their housing needs, which are mainly imposed by the labor, land and housing markets. The reconstruction of changes in the residence of the popular sectors made it possible to build a baseline and rethink urban policies with the aim of achieving greater equality among people and equitable access to the city. [ABSTRACT FROM AUTHOR]

Copyright of Tropical Grasslands / Forrajes Tropicales is the property of International Centre for Tropical Agriculture - CIAT and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Veterinaria is the property of Universidad Nacional del Nordeste and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The work aimed to analyze the causes of the deviation of the fuel consumption index of the Hyundai 1.7 MW generators. The methods used were expert consultation, the hypothetical deductive method for the preparation of the Ishikawa diagram as well as the statistical method of principal component analysis for determining the influence of the percentage of sludge production against fuel consumption on consumption. The main result is the demonstration of the contribution of the sludge production percentage against fuel fuel consumption, the variability of the deviation of the consumption index, the influence of the environmental conditions and the efficiency of the radiator, as well as the pressure of fuel in engine power. With the control of the sludge production, the fuel pressure and the efficiency of the radiators, the fuel consumption rate can be reduced. [ABSTRACT FROM AUTHOR]

Copyright of Boletín Científico Centro de Museos de Historia Natural is the property of Universidad de Caldas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Colombiana de Ciencias Hortícolas is the property of Revista Colombiana de Ciencias Horticolas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The work was developed in the farm "Las Papas", belonging to the National Institute of Agricultural Sciences (INCA); located at the 23° 00' north latitude and 82° 12' west longitude, to a height of 138 m above sea level in San José de las Lajas, Mayabeque. With the objective of evaluating the responses elicited in performance, product variations of temperatures during the crop cycle, the Roman variety plantations were made during the years 2014 and 2015, respectively. The behavior of the minimum temperatures, average and maximum and the amplitude of these was assessed. The total and commercial yield in t ha-1 and the composition of the tuber size was estimated. Statistical processing was performed with the use of Statgraphycs v5.1 program and graphics were performed using the Sigma Plot v3.1 program. [ABSTRACT FROM AUTHOR]

The objective of this work was to evaluate the variability of photosynthetic pigment content and daily stomatal conductance was evaluated in relation to environmental variables in Copoazú (Theobroma grandiflorum) ecotypes. The ecotypes used were part of the germoplasm bank of the University of the Amazon (Colombia). The study was carried out during the year 2015. Four leaves of the average stratum of four plants were collected for each ecotype, to extract and read at different levels of absorbance and determine the content of photosynthetic pigments. During the hours of 04:00 a.m. to 6:00 p.m., the stomatal conductance (gs) was monitored for environmental variables (relative humidity, air temperature, radiation and vapor pressure deficit (VPD). An analysis of variance was made using the Tukey test, correlations and regressions were made between gs and environmental variables. The contents of chlorophyll a, b, total and carotenoids among ecotypes were different (P<0.0001), the ecotype UA-31 presented the highest values, contrasting with the ecotype UA-37. Concerning gs, the interaction ecotype*hour showed significant differences (P<0.0001). The ecotypes that presented the highest values of gs were UA-67 and UA-039, (P<0.0001), radiation (-0.91, P<0.0001) and DPV (-0.94; P<0.0001) 0.0001).The results suggest that ecotypes UA-039 and UA-31 were the most suitable in terms of gaseous exchange and content of photosynthetic pigments. [ABSTRACT FROM AUTHOR]

A feasible possibility to cultivate tropical species in the subtropics is compensate the limitations of the low temperatures using plastic covers that modify the environment and the consequent crop response. The aim of this research was to evaluate in morphoanatomical terms, the "D" leaves of pineapple plants growing under different cropping conditions, linking some differentiations in their morphological, anatomical and ecophysiological characteristics in relation to the year seasons. Leaf area, fresh and dry weight, sheet thickness, water holding capacity, number of spines, chlorophyll content were measured and histological sections for morphoanatomical observations were carried out. In the present research, it was found that the environmental conditions under coverage, increased leaf area, dry weight and fresh weight of "D" leaves pineapple during and after the cold seasons, respect to those cropped under field conditions. Pineapple Leaves growing under greenhouse conditions, increased stomatal frequency, performed more fiber beans but thinner aquifers and chlorenchyma than those grown in field conditions, indicating phenotypic plasticity. [ABSTRACT FROM AUTHOR]

Copyright of Boletín Científico Centro de Museos de Historia Natural is the property of Universidad de Caldas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de la Facultad de Odontología. Universidad Nacional de Cuyo is the property of Universidad Nacional de Cuyo, Facultad de Odontologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Currently, societies are in a process of auto-transition as the result of configuring the knowledge society, which is affecting all spheres, generating a series of changes in the social-ecoplanetary environment. Knowledge management permits the self-generation of new organizational capacities as well as the improvement of effectiveness, performance and productivity in selforganized eco communities. The objective of this work is to present an epistemological approach to the focus on knowledge management in Venezuelan self-organized ecological communities, from the transcomplex perspective. The methodology consisted of a specialized bibliographic review of the different notions, concepts, terminologies and conceptualizations of the term knowledge management from the viewpoint of different authors who are immersed in diverse epistemological perspectives. A principal reflection is that knowledge management as a transversal and transdisciplinary approach integrates multiple contexts, dimensions and disciplines that require a meta-vision and a meta-strategy appropriate for achieving effective management as well as attractors and retractors for configuring the underlying reticular theoretical fabric. [ABSTRACT FROM AUTHOR]

The article reports on research which was conducted to investigate whether symptoms which were found in employees of a tertiary hospital in Madrid, Spain were related to Sick Building Syndrome. Researchers gave questionnaires to 164 female and 43 male employees and measured the environmental conditions of the hospital. They found that the building met all the requirements needed to be associated with Sick Building Syndrome.

El artículo discurre sobre el impacto ambiental del transporte, especialmente en las ciudades. La autora comenta sobre varios medios de transporte, incluyendo el transporte público o urbano, el transporte por ferrocarril y el transporte marítimo. También se considera la contaminación ambiental y la insostenibilidad de estos tipos de transportación.

In conventional tomato (Lycopersicum licopersicon Mill.) nurseries, with the use of trays of small cavities, the seedlings suffer physiological and morphological negative effects in response to mutual shading caused by high density of seedlings and reduction of volume for root growth, factors which are exacerbated at the end of the nursery stage. The aim of this study, in a greenhouse, was to evaluate the effects of population density and substrate volume in nursery on growth and development of tomato seedlings, Charleston cultivar, and after transplanting, on the number of flowers of the three first inflorescences as a strategy to increase performance under a production system based on three clusters per plant. The experimental design was a randomized complete block with a factorial 24 arrangement: the combination of four densities of plantation (480, 720, 960 and 1200 seedlings m-2) and four volumes of substrate (12.3, 36.8, 61.4 and 85.9 cm³) defined by its depth. In nursery the substrate was a mixture of perlite: vermiculite 1:1 (v/v). A variance analysis was performed and treatment means were compared using the Tukey test (p≤0.05). Seedling height and number of leaves were higher in the lowest density (480 seedlings m-2) 37 d after sowing. The highest density (1200 seedlings m-2) caused a lower foliar area and biomass of stem, roots and total in the seedlings, as well as a decrease in the number of fruits in the first cluster. The containers with volume of 12.3 cm³ reduced the seedling height and the number of flowers in the first inflorescence, respect to containers of 85.9 cm³. It is concluded that seedling vigor can be increased by reducing sowing density which increases number of flowers and fruits in plants with a three clusters system. [ABSTRACT FROM AUTHOR]

Copyright of Revista de Investigación is the property of Universidad Pedagogica Experimental Libertador and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

We evaluated the germination and survival in situ and ex situ of seedlings of Aspidosperma megalocarpon, Eugenia sp., Lonchocarpus castilloi, Manilkara zapota, Ormosia macrocalyx and Rollinia mucosa. We established nine blocks of 5 m x 20 m in the field, in which 360 seeds of each species were established in three successional conditions with three repetitions: mature tropical forest, advanced fallows and young fallows. The experiment was replied in a tree nursery using 40, 60 and 80% shade. We found no significant differences in the rates of germination and neither in growth due to variation in the natural cover. However, the rates of germination of A. megalocarpon and O. macrocalyx, and the rates of depredation of M. zapota and L. castilloi were affected by the coverage. Seeds sown in young fallows showed higher depredation, whereas seedling survival was higher here than in the other successional stages. In the tree nursery, no significant difference was found in the proportion of germinated seeds, the rates of germination and in growth. However, R. mucosa showed low survival (42%). The environmental conditions of the forests in Tabasco are under various stages of degradation and it is appropriate to start a rehabilitation program by introducing native species. This study indicates that this could be done by sowing the seeds directly in the forests without first producing seedlings in nurseries, which in turn would reduce the costs. It is recommend continuing research on the seed and seedling performance of other species that could be used to rehabilitate and restore the tropical forest. [ABSTRACT FROM AUTHOR]

The intensity of flavor in garlic bulbs (Allium sativum L.), depends on both genetic and environmental factors. Volatile organosulfur compounds, specifically thiosulfinates, are responsible for organoleptic characteristics in freshly cloves, being allicin (diallyl thiosulfinate) the main compound of this group. Pyruvic acid is a product of the enzymatic reaction that generates the flavor once raw garlic is crushed, so its measurement is associated with the intensity of pungency in garlic. The aim of this study was to examine whether the variability in the pyruvic and allicin content is more related to the genetic characteristics or the influence of the cultivation areas. For this purpose were selected four garlic cultivars (Castaño INTA, Surefio INTA, Lican INTA and Union) from the germplasm bank of INTA La Consulta, Mendoza, Argentina, grown in different geographical areas: La Consulta (San Carlos, Mendoza), Esquel (Chubut) and Ushuaia (Tierra del Fuego). Allicin was quantified by Liquid Chromatography (HPLC) and pungency by spectrophotometry. From the statistical analysis of the results obtained we may conclude that there were significant differences in the pyruvic and allicin content among different cultivars from the same area and the pyruvic and allicin content for the same cultivar in different areas. [ABSTRACT FROM AUTHOR]

Resveratrol is considered a phytoalexin, because it is synthesized in response to pathogens (biotic factors) and adverse climatic conditions (abiotic factors). Nowadays there is great interest in this substance, due to its potential use in pharmacology as an antioxidant. Through high performance liquid chromatography (HPLC), resveratrol content was determined in leaves of 18 accessions of wild grapevines native to Puebla, Mexico; four of them growing in four different environmental conditions. There was high variability in the resveratrol contents, estimating 39.5 µg g-1 fresh weight as maximum value whereas in some accessions there was not detection. Differences in the content of resveratrol within the four environments for the different accessions were observed, suggesting high influence of the environment on the genotype, inducting or inhibiting the biosynthesis of that compound. [ABSTRACT FROM AUTHOR]

Copyright of Salud Uninorte is the property of Fundacion Universidad del Norte and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)