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Felix, A.; Mendoza, E.; Chavez, V.; Silva, R., and Rivillas-Ospina, G. 2018. Wave and Wind Energy Potential Including Extreme Events: A Case Study of Mexico. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp.1336–1340. Coconut Creek (Florida), ISSN 0749-0208.The available wind and wave energy potential of the coasts of Mexico was found to be low in several analyses. However, these analyses considered only average conditions. To adequately assess the energy potential of Mexican coasts for energy extraction, it is necessary to characterize maritime weather and to define both normal and storm thresholds. For the present study, a 60-year historical analysis of wave and wind conditions along the Mexican coasts was performed. A statistical analysis of extreme conditions was carried out using the peaks-over-threshold approach. Also, seasonal (winter, spring, summer and autumn) and hourly available power were included in the analysis. The differences between the energy potentials when including and excluding extreme events are considerable. The energy potential of events occurring along the Mexican coasts confirms that energy can be adequately and profitably obtained from waves and wind. The greatest energy potential in the Atlantic is found to the northeast of the Yucatan Peninsula and in the Pacific along the Baja California Peninsula. Winter is the best season for energy extraction, while summer is the most unfavorable season.

Human settlements in coastal zones have increased vulnerability to hydrometeorological phenomena in many places around the world. Of particular interest here is the case of Cancun, a luxurious tourist resort created in 1970 on the Caribbean coast of Mexico. The lack of regulations to control the expansion of tourist infrastructure on this barrier island, the disregard to environmental preservation, and the scarcity of external sediment sources have affected the natural balance of the beach-dune system over the intervening years. The consequences are chronic erosion of the beach and increased vulnerability to the extreme events of the last 30 years. Despite the implementation of some management strategies to halt erosion problems, the system still faces great risk. This paper shows the close relation that exists between the erosion of Cancun beach since the late 1960s and the spatial and temporal alteration of the ecosystem protection services triggered by the anthropogenic intervention on the barrier island. The analysis integrates the numerical modelling of the current state of the beach and the knowledge acquired from previous studies related to the wave field and circulation patterns under calm and extreme wave conditions. Cancun beach system showed to be still vulnerable to hydrometeorological threats.

In this work we present a methodology of solution of the multigroup multi-layer stationary neutron diffusion equation in two-dimensional cartesian geometry. This eigenvalue problem describes the criticality of nuclear reactor, that is, it establishes the ratio between the numbers of neutrons generated in successive fission reactions. In order to solve this problem, we use the power method to obtain the dominant eigenvalue (Keff ) and its corresponding eigenfunction. Each iteration of the power method requires the solution of a non–homogeneous diffusion problem, that usually is solved numerically, however in this work the neutron diffusion equation is solved in analytical form in each iteration. To solve this system of second order partial differential equations, we propose to use the Finite Fourier Transform in one of the spatial variables obtaining a transformed problem which is resolved by well-established methods for ordinary differential equations. After it is solved, we use the inverse Fourier Transform to reconstruct the expression of the neutron flux in the original variables. However, at each iteration of the power method it is necessary to update the source term with the neutron flux and the Keff of the previous iteration. Thus in all iterations new terms are added which becomes the process very laborious. To overcome this problem, the authors propose a methodology that approximates the neutron flux in standard form by polynomial interpolation. In order to reduce computational time we propose to subdivide the real regions of the problem into small fictitious regions. In this way, the interpolating polynomials of each region can be of low order, reducing the dimensions of the matrices involved and, consequently, computational time. The methodology is implemented to solve a heterogeneous problem and the numerical results are compared with the finite volumes method.

In recent years, ocean current turbines have proven to be a reliable device for renewable energy generation. A crucial element of these turbines are the foundations, since they limit the displacement of the turbine, which is key in achieving efficiency in energy conversion, and can account for up to 26% of the total cost of the project. Most design procedures for foundations focus on sandy and clayey soils, but rock soils often predominate in tropical locations where marine currents are suitable for the installation of this type of turbine. This paper presents a design procedure for steel pile anchors (PAs) and concrete dead weight anchors (DWAs) on weak rock soils, using the assumptions of current technical documents and design codes commonly used in the industry for marine structures. Using specific designs for PA and DWA anchors, the procedure was theoretically assessed for a site off Cozumel Island, Mexico. The results show that the dimensions needed for DWAs are substantially larger than those for PAs. Therefore, whenever drilling is economically and operatively possible, piles would be preferable for the foundations of current turbine systems.

Shipping water events that propagate over the decks of marine structures can generate significant loads on them. As the configuration of the structure may affect the loading behaviour, investigation of shipping water loads in different structural conditions is required. This paper presents a numerical investigation of the effect of deck roughness and deck length on vertical and horizontal loads caused by shipping water on a fixed structure. Systematic analyses were carried out of isolated shipping water events generated with the wet dam-break method and simulated with OpenFoam Computational Fluid Dynamics toolbox. The numerical approach was validated and then the shipping water loads were examined. It was found that, as roughness increased, the maximum vertical and horizontal loads showed a delay. As the deck length reduced, the vertical backflow loads tended to increase. These results suggest it may be worthwhile examining the behaviour of shipping water as it propagates over rough surfaces caused by fouling, corrosion, or those with small structural elements distributed on them. Moreover, the effect of deck length is important in understanding the order of magnitude of loads on structures with variable deck lengths, and those which have forward and backflow loading stages.

In Mexico, the CEMIE-Oceano (Mexican Center for Ocean Energy Innovation) is exploring potential locations for marine energy production while assessing social perception and protecting the environment. The goals of this study were to: a) calculate potential renewable energy production in the north of the Yucatan Peninsula; b) understand the perception of the local inhabitants towards the installation and operation of ocean energy devices and c) estimate the potential environmental impacts in the Rio Lagartos Biosphere Reserve, considering keystone or unique/endemic species. Our results indicate that energy harvesting through salinity gradient would be the most feasible among renewable energy production alternatives that would reduce emissions of CO2 into the atmosphere thus helping mitigate global warming. The maximum recorded salinity was 90 psu, in February and April, which would provide 1.39 kWh/m3. This would not be sufficient to fully meet the local demands for electricity. Our findings show that the local people are not well informed regarding renewable energies. They appreciate their natural environment and would be very reluctant to see drastic changes in their surroundings. Finally, if saline gradient energy production were to be implemented here, the changes in the gradient and hydrosedimentary flows would probably induce undesirable alterations to the natural ecosystems: (mangroves), food webs (plankton), and threatened species (flamingos and horseshoe crabs). In conclusion, our findings indicate that salinity gradient energy production is unlikely to be viable in the Ria Lagartos Biosphere Reserve mostly because of the reluctance of local inhabitants to changes in their environment and the potential environmental impacts.

Rubble-mound breakwaters are widely used for beach protection and generate shelter zones in the water, although their feasibility diminishes as water depth increases, due mainly to construction costs. In this paper an alternative structure, a fixed submerged horizontal plate, is tested in the hope that such a design may be a practical engineering option for the protection of small ports and marinas, and/or providing a sheltered zone for recreational purposes. The interaction of irregular unidirectional-waves with the plates was studied using CADMAS-SURF software and validated experimentally. Several non-dimensional parameters were tested in order to evaluate their contribution in dissipating the incoming waves. Results suggest that energy loss depends to a large degree on the combination of the relative depth, wave steepness, relative thickness, relative length and relative submergence, with the last being the most important, as it significantly affects the wave-plate interaction. The plate produces greatest dissipation when placed at a depth of 3% of the water column. It should therefore be deployed near the surface and in regions with low tidal range conditions. Plate lengths of 20% of the incoming wavelength and a relative thickness of 0.08 are recommended to produce greater energy dissipation with lower transmission and reflection.

This paper aims to highlight the prevailing experiences of Latin America and to clarify what ‘green infrastructure’ entails in addition to describing seven case studies from a range of coastal ecosystems (wetlands, coastal dunes, beaches and coral reefs) at scales varying from local to regional. The case studies are categorised according to their degree of naturalness (nature-based, engineered ecosystems, soft engineering, ecologically enhanced hard infrastructure and de-engineering). Generally, the implementation of green infrastructure projects aims to increase resilience, enhance the provision of ecosystem services, recover biodiversity, reduce the negative effects of hard infrastructure and implement corrective measures. The greatest benefits of these projects relate to the creation of multi-functional spaces, which often combine the above advantages with improved opportunities for recreation and/or economic activities. It is hoped that this paper will disseminate the experience in green infrastructure among academics and practitioners and stimulate wider adoption of green infrastructure projects and good practices.

This paper focuses on the review and analysis of strategies of urban mobility in Mexico, with the objective of identifying the variables that positively and negatively affect their development, citing gaps and proposing improvements that contribute to solving problems of mobility in major cities. The variables of urban mobility identified are savings in money and time, safety, congestion, accidents, intelligent systems and local pollution. The intervention of government is essential in urban planning and mobility management, to promote programs that contribute to the improvement of each of the variables. Avoiding the need for mobility is an important factor that contributes to sustainability. This should be considered in city planning; making use of technology, working at home can very suitable and affordable in some cases. Mobility management strategies can achieve a wider range of planning objectives than many other strategies such as increasing road space or making vehicles more efficient. Objectives attained include the comfort and convenience of users, the reduction of congestion, savings in money and time, reduction in traffic accidents, improvement in mobility options, conservation of energy, and reduction in pollution as well as health and wellbeing benefits. Urban mobility has an important role in the functioning of a city, so the design of new cities or the redesign of existing ones, must take this concept into account.

Background and aims Atherosclerotic plaque molecular imaging with 18 F-sodium fluoride (NaF) in positron emission tomography with computed tomography (PET-CT) provides potential discrimination between active unstable microcalcification and established dormant calcification. We aimed to study 18 F-NaF atherosclerotic plaque uptake in high cardiovascular (CV) risk participants and its associations with CV risk factors, coronary calcium score and thoracic fat volume. Methods High CV risk hypertensive individuals from a single centre were prospectively scanned with 18 F-NaF-PET-CT in the coronary, aortic and carotideal arteries. Atherosclerotic plaque 18 F-NaF uptake was expressed as Corrected Uptake per Lesion (CUL): maximum standard uptake value in each vascular territory subtracted by mean blood pool activity. Results Mean age was 64 years, 56% male and 96% Caucasian (n = 25). Ninety six per cent of the subjects showed 18 F-NaF uptake in the aorta (CUL 0.9 ± 0.3), 40% in the carotid arteries (median CUL 0.0, IQR 0.0–0.7) and 64% in the coronary arteries (0.4, IQR 0.0–0.6). Individuals with ≥ five risk factors (60%) had increased overall 18 F-NaF uptake (1.1 ± 0.3 vs . 0.7 ± 0.3, p p = 0.01). There was no correlation between 18 F-NaF uptake in the coronary arteries and calcium score ( p = 0.87). Thoracic fat was moderately correlated with overall CUL (r = 0.41, p = 0.04). Conclusions In a high CV risk group, 18 F-NaF atherosclerotic plaque uptake was related to the burden of CV risk factors and thoracic fat volume, but there was no association between coronary uptake and calcium score.

Although the dynamics involved in the liquefaction process are understood reasonably well, experimental work to reproduce the sinking of structures due to liquefaction, which is representative and repeatable, has so far not been recorded. In this work, three sets of experiments were performed in an attempt to fill the gaps in the knowledge by modelling a small scale reproduction of the failure. Firstly, an analysis of the role of the proportions of the initial fine sediment and water content is presented; secondly, a group of tests involving a vertical breakwater were performed, and thirdly, an experiment was carried out to reproduce the failure of a submerged structure on a clayey bed in the presence of waves. From these experiments, we were able to set thresholds for bed composition, below which soil liquefaction is likely to occur. It was determined that the potential to liquefy increases with the initial water content and that soils of 40% or more clay content may liquefy. This methodology has proven to be repeatable, allowing the reproduction of the sinking of coastal structures due to liquefaction of the underlying soil.

Chavez, V.; Mendoza, E.; Ramirez, E., and Silva, R., 2017. Impact of inlet management on the resilience of a coastal lagoon: La Mancha, Veracruz, Mexico. In: Martinez, M.L.; Taramelli, A., and Silva, R. (eds.), Coastal Resilience: Exploring the Many Challenges from Different Viewpoints. Journal of Coastal Research, Special Issue No. 77, pp. 51–61. Coconut Creek (Florida), ISSN 0749-0208. The importance of conserving wetlands for their functions and services, has shown the need for adequate management practices, which take into consideration the vulnerability and resilience of these ecosystems. The lagoon of La Mancha, Veracruz, Mexico, is a Ramsar site, which in practice is empirically managed by local fishermen. To assess the vulnerability of this ecosystem, the erosion/accretion of the beach, inlet dynamics, the hydrodynamics of circulation patterns in the lagoon during winter storms, and the effects of anthropogenic activities were studied. Four topographic surveys were performed between 2013 ...

Lithgow, D.; Martinez, M.L.; Silva, R.; Geneletti, D.; Gallego-Fernandez, J.B.; Cerdan, C.R.; Mendoza, E., and Jermain, A., 2017. Ecosystem services to enhance coastal resilience in Mexico: The gap between the perceptions of decision-makers and academics. In: Martinez, M.L.; Taramelli, A., and Silva, R. (eds.), Coastal Resilience: Exploring the Many Challenges from Different Viewpoints. Journal of Coastal Research, Special Issue No. 77, pp. 116–126. Coconut Creek (Florida), ISSN 0749-0208. In this study, we assessed the respective perceptions of academics and decision-makers concerning the relationships (dependence and impact) between economic activities and ecosystem services in coastal environments. Our goal was to explore the potential for achieving informed decisions that are based on an effective and appropriate use of the concept of ecosystem services. A set of questionnaires was e-mailed to a selected group of academics and decision-makers and the responses analysed. The perceived degree o...

de la Lanza-Espino, G.; Silva, R.; Hernandez-Pulido, S.; Marino-Tapia, I., and Enriquez, C., 2017. A retrospective analysis of water quality in an open bay on the Mexican Pacific. In: Martinez, M.L.; Taramelli, A., and Silva, R. (eds.), Coastal Resilience: Exploring the Many Challenges from Different Viewpoints. Journal of Coastal Research, Special Issue, No. 77, pp. 39–50. Coconut Creek (Florida), ISSN 0749-0208. Lack of knowledge about the complex interactions between the dynamics of natural systems (physical, chemical and biological) and the need for the resources found in coastal environments has led to the unplanned and disorganized development of several anthropogenic activities in the study area. It is important to revert this tendency and promote medium term studies that can help to foresee the unwanted effects, sometimes irreversible, of human activities on the environment. This paper includes results from hydrodynamic and water quality studies carried out in Petacalco Bay, Guerrero (Mex...

Martinez, M.L.; Taramelli, A., and Silva, R., 2017. Resistance and resilience: Facing the multidimensional challenges in coastal areas. In: Martinez, M.L.; Taramelli, A., and Silva, R. (eds.), Coastal Resilience: Exploring the Many Challenges from Different Viewpoints. Journal of Coastal Research, Special Issue No. 77, pp. 1–6. Coconut Creek (Florida), ISSN 0749-0208. Coastal ecosystems are subject to recurrent natural disturbances that act as drivers of ecosystem dynamics. In addition, in recent years, human impact has exerted intense pressures on these ecosystems, altering the dynamics and reducing resistance and resilience. The former refers to the ability of a system to hold a force without any modification, while the latter is a measure of its the capacity to respond to the consequences of perturbation and return to its original status. How can we achieve coastal management actions so that coastal resistance and resilience are enhanced? This volume integrates a broad set of studies that anal...

Mendoza, E.; Oderiz, I.; Martinez, M.L., and Silva, R., 2017. Measurements and modelling of small scale processes of vegetation preventing dune erosion. In: Martinez, M.L.; Taramelli, A., and Silva, R. (eds.), Coastal Resilience: Exploring the Many Challenges from Different Viewpoints. Journal of Coastal Research, Special Issue No. 77, pp. 19–27. Coconut Creek (Florida), ISSN 0749-0208. Traditionally, actions taken to reduce vulnerability to beach erosion have been based on protecting economic resources, recreational activities and human lives. Hard infrastructure for coastal protection has proven effective, but the side effects have been called into question, given that making the coastal system more rigid alters the natural dynamics, degrades environmental services and damages the landscape. Ecosystem based coastal defence strategies are now seen as a more environmentally friendly alternative which can maintain and even increase the resilience and resistance of coastal zones. This work aims to ...

Martinez, M.L.; Silva, R.; Lithgow, D.; Mendoza, E; Flores, P.; Martinez, R., and Cruz, C., 2017. Human impact on coastal resilience along the coast of Veracruz, Mexico. In: Martinez, M.L.; Taramelli, A., and Silva, R. (eds.), Coastal Resilience: Exploring the Many Challenges from Different Viewpoints. Journal of Coastal Research, Special Issue No. 77, pp. 143–153. Coconut Creek (Florida), ISSN 0749-0208. Coastal ecosystems are naturally exposed to recurrent disturbances, which act as drivers of ecosystem dynamics, but in recent years, human impact has exerted intense pressures, resulting in altered dynamics and thus, reduced resilience. In this work the state of Veracruz, on the Gulf of Mexico, was used as a case study to assess the impact of human activities and explore how these have affected coastal resilience. A regional diagnosis was performed, considering coastal morphology, sediment characteristics, shoreline dynamics, natural, and transformed ecosystems, conservation areas, and built inf...

Introdução: A tomografia por emissão de positrões/tomografia computorizada - FNa-F18 vem sendo considerada como uma modalidade imagiológica com vantagens na pesquisa de metastização óssea. Comparámos a sua capacidade para deteção de metástases ósseas com a de outras técnicas imagiológicas.Material e Métodos: Avaliámos retrospetivamente 114 doentes que realizaram tomografia por emissão de positrões/tomografia computorizada - FNa-F18. Destes, 49 realizaram também cintigrafia óssea, 61 tomografia por emissão de positrões/tomografia computorizada - FDG-F18 e 10 tomografia por emissão de positrões/tomografia computorizada - FCH-F18. Identificámos a técnica que detetou um maior número de metástases ósseas. Comparámos ainda a tomografia por emissão de positrões com a componente tomografia computorizada da tomografia por emissão de positrões/tomografia computorizada - FNa-F18. Registámos as situações nas quais a tomografia por emissão de positrões/tomografia computorizada FNa-F18 e a cintigrafia óssea necessitaram de exames adicionais para esclarecimento complementar.Resultados: A tomografia por emissão de positrões/tomografia computorizada - FNa-F18 foi superior à cintigrafia óssea em 49% dos doentes (p < 0,001); foi superior à tomografia por emissão de positrões/tomografia computorizada - FDG-F18 em 59% dos doentes (p < 0,001) e foi superior à tomografia por emissão de positrões/tomografia computorizada - FCH-F18 em 40% dos doentes (p < 0,001). Nenhuma das técnicas imagiológicas avaliadas lhe foi superior. Na tomografia por emissão de positrões/tomografia computorizada -FNa-F18 a componente tomografia por emissão de positrões foi superior à tomografia computorizada em 35% dos casos (p < 0,001). Foi sugerida investigação complementar em apenas 3,5% dos doentes que realizaram tomografia por emissão de positrões/ tomografia computorizada - FNa-F18 (45% para a cintigrafia óssea) (p < 0,001).Discussão: Em conformidade com o referido por outros autores, a nossa experiência confirma que a tomografia por emissão de positrões/tomografia computorizada - FNa-F18 tem excelente desempenho na deteção de metástases ósseas, sendo capaz de identificar lesões em mais doentes, e em maior número, quando comparada com outras técnicas imagiológicas.Conclusão: A tomografia por emissão de positrões/tomografia computorizada - FNa-F18 revelou superioridade na deteção de metástases ósseas comparativamente à cintigrafia óssea, à tomografia por emissão de positrões/tomografia computorizada - FDG-F18 e à tomografia por emissão de positrões/tomografia computorizada - FCH- F18.

The aim of the present study was to evaluate the uptake of F18-NaF by the arterial wall in patients with high cardiovascular (CV) risk profile. The tracer uptake was assessed in relation to gender and the number of CV risk factors. 25 patients without known CV disease were included and evaluated by PET-CT with F18-NaF: 14 (56%) men and 11 (44%) women. The mean target-to-background ratio (TBR: max SUV/mean blood-pool SUV) but not the corrected uptake per lesion (CUL: max SUV – mean blood-pool SUV) was higher in men than women (TBR: 1.8 ± 0.6 vs 1.7 ± 0.2; P = 0.04; CUL: 0.7 ± 0.3 vs W 0.6 ± 0.1; P = 0.4). Patients with >3 CV risk factors had higher CUL (0.8 ± 0.1 vs 0.6 ± 0.2; P = 0.01) but not TBR (1.8 ± 0.2 vs 1.7 ± 0.6; P = 0.7) than patients with

This article discusses the strategy of the New Party's (NOVO) use of social networks and social media, having as its chronological axis the 2018 general elections. It is based on the premise that the actions contributed to the party's election results. in the election. In this context, there is a brief presentation of the origins, the formation and trajectory of the party association, including its extraparliamentary basis. Once the characteristics and singularities of NOVO are identified, the concepts of media and social networks are presented. Following this, the correlation of the party's media strategies in 2018 deepens, in which it elected 8 federal deputies, 11 state deputies, a district deputy and a governor. The literature review, conceptual discussion and analysis of data from the Superior Electoral Court and the communication strategies of NOVO are used as methods. It clearly identifies the importance of digital media for the party's electoral success in 2018. Este artículo analiza la estrategia del uso del Partido Novo (NOVO) de las redes sociales y los medios sociales, teniendo como eje cronológico las elecciones generales de 2018. Se basa en la premisa de que las acciones contribuyeron a los resultados electorales del partido en las elecciones. En este contexto, hay una breve presentación de los orígenes, la formación y la trayectoria de la asociación del partido, incluida su base extraparlamentaria. Una vez que se identifican las características y singularidades de NOVO, se presentan los conceptos de medios y redes sociales. Después de esto, la correlación de las estrategias de medios del partido en 2018 se profundiza, en la que eligió a 8 diputados federales, 11 diputados estatales, un diputado de distrito y un gobernador. La revisión de la literatura, la discusión conceptual y el análisis de datos del Tribunal Superior Electoral y las estrategias de comunicación de NOVO se utilizan como métodos. Identifica claramente la importancia de los medios digitales para el éxito electoral del partido en 2018. O presente artigo discute a estratégia do uso das redes sociais e das mídias sociais por parte do Partido Novo (NOVO), tendo como eixo cronológico as eleições gerais de 2018. Parte-se da premissa de que as ações contribuíram para os resultados eleitorais do partido no pleito. Nesse contexto, há uma breve apresentação das origens, da formação e trajetória da agremiação partidária, inclusive com sua base extraparlamentar. Identificadas as características e singularidades do NOVO, apresentam-se os conceitos de mídias e redes sociais. Na sequência, aprofunda-se a correlação das estratégias midiáticas do partido em 2018, em que elegeu 8 deputados federais, 11 deputados estaduais, um deputado distrital e um governador. Usam-se como métodos a revisão de literatura, a discussão conceitual e a análise dos dados do Tribunal Superior Eleitoral e das estratégias comunicacionais do NOVO. Identifica-se, de maneira clara, a importância das mídias digitais para o sucesso eleitoral do partido em 2018.

This paper presents a two-dimensional experimental study of the interaction of wet dam-break bores with a fixed structure, regarding the evolution of the incident flows and the resultant green water events on the deck. The study employs image-based techniques to analyse flow propagation from videos taken by high-speed cameras, considering five different shipping water cases. The features of small air-cavities formed in some green water events of the plunging-dam-break type were analysed. Then, the spatial and temporal distribution of water elevations of the incident bores and green water were investigated, providing a database to be used for model validations. Some guidelines for the selection of the freeboard exceedance, which is of relevance for green water simulations, were provided. Finally, the relationship between the incident bore and water-on-deck kinematics was discussed. The proposed study can be used as a reference for performing simplified and systematic analyses of green water in a different two-dimensional setup, giving high-resolution data that visually capture the flow patterns and allow model validations to be performed.

Objetivo: compreender a percepção dos profissionais de saúde sobre os cuidados de enfermagem prestados à criança hospitalizada com dor oncológica crônica. Método: abordagem qualitativa, ancorada nos referenciais teórico e metodológico, respectivamente, da Teoria da Complexidade e da Teoria Fundamentada em Dados. Os dados foram coletados por meio de entrevista semiestruturada e observação não participante. Participaram da pesquisa 21 profissionais de saúde. Resultados: os profissionais de saúde qualificaram como boa a assistência de enfermagem oferecida à criança com dor oncológica crônica. No entanto, foi revelada a necessidade de avanços: nos aspectos estruturais da unidade e organizacionais do cuidado, na abordagem ao familiar da criança, na abordagem à criança em precaução de contato e valorização profissional. Conclusão: o cuidado de enfermagem prestado à criança com dor oncológica crônica apresentava-se como um desafio, seja pelas necessidades de melhorias apontadas, seja por questões gerenciais e de liderança.Descritores: Enfermagem Pediátrica. Cuidados de Enfermagem. Dor do Câncer. Hospitais. Pessoal de Saúde. Criança.

Aim: This study compared impression techniques and double pouring by means of cast’s accuracy. Methods: For each patient (n=10), impressions from right maxillary canine to first molar were made with acrylic resin trays and vinyl-polysiloxane using one single-step, and four two-steps techniques: relief with poly(vinyl chloride) film; tungsten-carbide bur/scalpel blade; small movements of the tray; non-relief. Total visible buccal surface area of crowns was measured three times using photographs from patients (Baseline) and casts. Mean area values (mm2) between Baseline and casts differences were analyzed by two-way repeated-measures ANOVA (α=.05; 1-β=85%). Results: No significant differences were observed for Impression Techniques (P=.525), Double Pouring (P=.281), and their interaction (P=.809). Conclusion: All impression techniques and double pouring produced casts with similar accuracy.

Objective: to understand how nurses deal with the elderly’s autonomy at the end of life. Method: qualitative, exploratory study, guided by the Grounded Theory. Ten nurses, eight doctors and 15 nursing technicians were interviewed between November 2016 and May 2017 at a university hospital in Rio de Janeiro/Brazil. Results: nurses deal with the elderly’s autonomy in compliance with the code of ethics and exercise leadership in actions and interactions to defend this right, evaluating, guiding and listening to the preferences of the elderly; interacting with the family; and sharing information with the health team. Final considerations: the elderly’s autonomy must be ensured in care planning, based on patient-centered communication and developed in the interaction among agents involved in care. The discussion on “Living Wills” Health Care Directives and principles of palliative care must be encouraged. RESUMEN Objetivo: comprender la forma en que los enfermeros se ocupan de la autonomía del anciano en relación con el fin de la vida. Método: estudio cualitativo, exploratorio, guiado por la Teoría Fundamentada en los Datos. Diez enfermeros, ocho médicos y 15 técnicos de enfermería fueron entrevistados entre noviembre de 2016 y mayo de 2017, en un hospital universitario, en Río de Janeiro/Brasil. Resultados: los enfermeros lidian con la autonomía del anciano en atención al código de ética y ejercen el liderazgo en las acciones e interacciones para defender este derecho, evaluando, orientando y escuchando las preferencias de los ancianos; interactuando con la familia; y compartiendo información con el equipo de salud. Consideraciones finales: la autonomía de los ancianos debe ser asegurada en la planificación asistencial, teniendo como base la comunicación centrada en el paciente y desarrollada en el proceso interacional entre los agentes involucrados en el cuidado. Es necesario fomentar la discusión sobre las Diretivas Antecipadas de Vontades (Directivas Anticipadas de Voluntades) y sobre los principios de los cuidados paliativos. RESUMO Objetivo: compreender a forma como os enfermeiros lidam com a autonomia do idoso na terminalidade da vida. Método: estudo qualitativo, exploratório, guiado pela Teoria Fundamentada nos Dados. Dez enfermeiros, oito médicos e 15 técnicos de enfermagem foram entrevistados entre novembro de 2016 e maio de 2017, em um hospital universitário, no Rio de Janeiro/Brasil. Resultados: os enfermeiros lidam com a autonomia do idoso em atendimento ao código de ética e exercem a liderança nas ações e interações para defender este direito, avaliando, orientando e ouvindo as preferências dos idosos; interatuando com a família; e compartilhando informações com a equipe de saúde. Considerações finais: a autonomia dos idosos deve ser assegurada no planejamento assistencial, tendo como base a comunicação centrada no paciente e desenvolvida no processo interacional entre os agentes envolvidos no cuidado. É preciso fomentar a discussão sobre as Diretivas Antecipadas de Vontades e sobre os princípios dos cuidados paliativos.

Made available in DSpace on 2019-10-03T17:32:03Z (GMT). No. of bitstreams: 0 Previous issue date: 2019. Added 1 bitstream(s) on 2019-10-04T16:21:03Z : No. of bitstreams: 1 S1807-25772019000100425.pdf: 1513724 bytes, checksum: 8d45c56b7240addf579f480ae922097e (MD5) ResumoIntrodução Realizar moldagens precisas e dimensionalmente estáveis que dupliquem a condição oral é um passo essencial para a confecção de restaurações indiretas de qualidade, garantindo seu sucesso e longevidade. Diversos estudos tem demonstrado os prós e contras de diferentes técnicas de moldagem, mas nenhum consenso da melhor técnica ainda foi descrito.Objetivo Este estudo avaliou a exatidão de modelos de gesso confeccionados por diferentes técnicas de moldagem, moldeiras e materiais.Material e método 10 pacientes foram selecionados e 20 moldes dos dentes #13 até #16 foram realizados utilizando técnicas simultânea (SS) e de dois passos, realizados com moldeiras parciais metálicas e individuais de resina acrílica, silicones de adição e condensação. Gesso tipo IV foi usados para os vazamentos. Três fotografias de cada paciente (baseline), assim como dos seus respectivos modelos de gesso foram realizadas e sua área foi então mensurada, na porção vestibular. Comparações de valores de área entre os grupos experimentais e o baseline foram performadas. Os dados mostraram aderência a curva normal, sendo submetidos ao teste 3-way ANOVA/Bonferroni (α=.05).Resultado As técnicas produziram diferenças significativas (P=0.02).Técnica simultânea foi mais precisa que a BUR (P=0.0003; 95=1,22 a 5.98), mas ambas resultaram em modelos similares àqueles feitos por meio das técnicas de PVC, MOV e sem NR, que foram similares entre si (P>0.05).Conclusão Técnica simultânea demonstrou valores absolutos similares àqueles demonstrados pelo baseline. AbstractIntroduction Making accurate and dimensionally stable impressions to duplicate oral conditions and tooth morphology is an essential step of prosthetic dentistry for fabricating well-fitted indirect restorations and, consequently, ensure the longevity and success of the treatment. Several authors describe pros and cons of different impression techniques, although there is no unanimity among them about the best one.Objective This study evaluated casts’ accuracy made by different impression techniques, trays and materials.Material and method 10 patients were selected and 20 impressions from teeth #13 to #16 were performed using single-step (SS) and two-step techniques, made with metal stock and customized acrylic resin partial trays, vinyl polysiloxane and condensation silicone rubbers. Type IV gypsum was used to pour the casts. Three photographs of each patient (baseline), as their respective gypsum casts, were taken, measured in their interested buccal surface area. Comparisons of area values among experimental groups and baseline were performed. Data showed adherence to normal curve, being submitted to 3-way ANOVA/Bonferroni test (α=.05).Result Technique produced significant differences (P=0.02). SS technique was more accurate than BUR one (P=0.003; 95=1.22 to 5.98), but both resulted in similar casts to PVC, MOV and NR techniques, which were similar to each other (P>0.05).Conclusion SS technique showed the closest absolute values to baseline. Universidade Estadual Paulista Faculdade de Odontologia de Araraquara Departamento de Materiais Odontológicos e Prótese Universidade de Araraquara McGill University Faculty of Dentistry Division of Oral Health and Society Universidade Estadual Paulista Faculdade de Odontologia de Araraquara Departamento de Materiais Odontológicos e Prótese

The use of systematic review in academia has shown considerable growth. It has often been used as a form of keyword filtering. However, a large amount of data is collected in this process, from which it is believed that more in-depth relationships can be identified, using data or text mining techniques. This study aims to identify and verify relationships between research topics, considering, as a proof of concept, papers in the journal Design Studies, through the application of Knowledge Discovery in Databases’ techniques. In a quantitative approach with a descriptive scope, a characterization of the sample of 483 articles is presented initially with descriptive statistics, encompassing keywords from metadata. Then, AlchemyAPI is used for automatic extraction of concepts and keywords, and RapidMiner Studio is used for association analysis from metadata and text mining results. It was found a recurrence of themes in Design such as Process, Cognition, Creativity, and Education. It was possible to verify, through the AlchemyAPI tool, concepts that were not expressed in papers’ keywords, which can be considered as a potential for systematic review studies. Thus, it is expected that the techniques applied here may be more explored in research on Design and other areas, as a valid support for systematic reviews of scientific publications., O emprego de revisão sistemática na academia tem apresentado crescimento considerável. Frequentemente, esta tem sido usada como uma forma de filtragem por meio de palavras-chave. Contudo, é levantada, nesse processo, uma grande quantidade de dados, a partir da qual se acredita que possam ser identificadas relações mais aprofundadas, empregando técnicas de mineração de dados ou textos. Este estudo tem como objetivo identificar e verificar relações entre tópicos de pesquisa, considerando como uma prova de conceito os artigos do periódico Design Studies, por meio da aplicação de tecnologias de Descoberta de Conhecimentos em Bases de Dados. Em uma abordagem quantitativa de alcance descritivo, apresenta-se, inicialmente, uma caracterização da amostra de 483 artigos desse periódico a partir de estatística descritiva, abarcando as palavras-chave provenientes dos seus metadados. Em seguida, é usada a ferramenta de mineração de texto AlchemyAPI, para extração automática de conceitos e palavras-chave, e a ferramenta RapidMiner Studio, para análise de associação a partir dos metadados e dos resultados da mineração de texto. Constatou-se a recorrência de tópicos como o Processo, a Cognição, a Criatividade e a Educação em Design. Foi possível verificar, por meio da ferramenta AlchemyAPI, conceitos que não foram expressos nas palavras-chave dos artigos, o que pode ser considerado como uma potencialidade para estudos de revisão sistemática. Assim, espera-se que as técnicas aqui abordadas possam ser mais exploradas em pesquisas de diversas áreas, enquanto suporte válido para revisões sistemáticas de publicações científicas.

The Atlantic and Pacific coasts of Mexico offer a variety of marine energy sources for exploitation. Although the Mexican government has made important efforts to reduce its dependence on fossil fuels, national participation in clean energies is still limited in terms of electricity production. This paper presents a practical theoretical assessment of marine energy sources around Mexico, with the aim of identifying potential zones for subsequent, more detailed, technical evaluations and project implementations. The energy sources considered are ocean currents, waves, salinity, and thermal gradients. Using global databases, the percentages of energy availability for the defined thresholds were computed to establish the prospective regions with the most persistent power availability. This approach proved to offer more meaningful information than simple averaged values. Moreover, some environmental and socio-economic factors to be considered for future ocean energy resource assessments in Mexico were also discussed. The results show that the wave energy potential is highest in the northwest of Mexico (~2&ndash, 10 kW/m for more than 50% of the time), and that there is a constant source of ocean current energy off Quintana Roo state (~32&ndash, 215 W/m2 for more than 50% of the time). The thermal gradient power is more persistent in the southwest and southeast of the country, where ~100&ndash, 200 MW can be found 70% of the time. The salinity gradient energy is strongest in the southeast of Mexico. The practical approach presented here can be extended to perform preliminary resources assessments in regions where information is scarce.

Capturing the propagation of green water events on in ships and other marine structures is of importance when studying the hydrodynamic effects on their motion and the structure’s behavior. Analytical models used to predict green water elevations, such as dam-break models, have been considered to represent time series of water elevations of single green water events. This paper presents the use of a convolution approach to represent the time series of water elevations of two consecutive green water events on deck of a fixed structure. The procedure is described considering green water events, generated with regular waves, on a barge-type fixed structure. Its application is compared with results available elsewhere in the literature. With the assumptions related with the selection of input parameters of the convolution model, and considering only the first green water event, the results show that this methodology allows two consecutive green water events to be captured acceptably. It is hoped that this methodology will be useful in further time-domain applications which study the dynamic behavior of structures subjected to green water.

Os parasitos acompanham seus hospedeiros há milhares de anos. Com a domesticação dos animais e o desenvolvimento de sistemas de produção mais modernos, as criações vêm sendo mantidas em áreas cada vez menores, fazendo com que a densidade populacional fosse aumentada consideravelmente. Estas características aumentaram a disponibilidade de hospedeiros e favoreceram a transmissão de parasitos, tornando as preocupações com o parasitismo em animais cada vez maiores. Nas últimas décadas, os avanços no desenvolvimento de diferentes compostos antiparasitários e formas de manejo dos animais foram notórios e, indiscutivelmente, foram essenciais para manter parasitos em níveis aceitáveis. Entretanto, para que um controle sanitário visando o combate ao parasitismo possa ser eficiente, ainda é crucial que os veterinários responsáveis tenham conhecimentos morfológicos a ponto de identificar quais são os organismos com potencial para causar problemas em cada sistema de produção para que, em seguida, use os conhecimentos sobre sua biologia para decidir quais medidas de controle serão utilizadas. Este atlas vem nesse sentido. O principal objetivo é auxiliar os profissionais a identificar os principais parasitos de importância veterinária que acometem animais domésticos no Brasil. O atlas foi dividido de acordo com os principais grupos de importância veterinária: Artropodologia, Protozoologia e Helmintologia. Os capítulos trazem informações básicas sobre os grupos taxonômicos de interesse e suas principais espécies, bem como ilustrações com indicativos das características morfológicas mais importantes usadas para sua identificação. Esperamos que este material seja útil tanto para estudantes de medicina veterinária ainda em fase de absorção de conhecimentos, mas também possa servir como um guia de bolso para veterinários exercendo suas atividades nas diversas áreas que a profissão proporciona.

Objective: To understand the meanings assigned by men to the habit of smoking and its risksrelated to the development of cancer.Method: Qualitative study conducted in a specialized health care institute in Rio de Janeiro,Brazil. Eighteen men, both smokers and former smokers, were interviewed from November2015 to April 2016. The data was analyzed using thematic content analysis.Results: Lack of knowledge about the habit of smoking and the feeling of pleasure that itprovides were found to be related to a higher probability of starting the habit. The meaningattributed by men to the relationship between smoking and the health-disease process wasrelated to family history or their own vulnerability. However, a number of men did not feelprepared to quit smoking due to their physical and psycho-emotional dependence.Conclusion: Smoking cessation may require professional support. It is necessary to recognizethe habit of smoking as a health problem, to want to quit smoking, and to identify personalmotivational factors. Objetivo: conhecer os significados que o homem atribui acerca do tabagismo e seus riscos relacionados ao desenvolvimento do câncer.Método: estudo qualitativo, realizado em um instituto especializado na atenção à saúde, no Rio de Janeiro, Brasil. Foram entrevistados 18 homens fumantes e ex-fumantes entre novembro de 2015 e abril de 2016. Utilizou-se a análise de conteúdo na modalidade temática.Resultados: a falta de conhecimento acerca do tabagismo e a sensação de prazer proporcionada relacionaram-se à maior probabilidade de se iniciar o hábito. O significado atribuído pelos homens sobre a relação com o processo saúde-doença relacionou-se ao histórico familiar ou à vulnerabilidade própria. Mas muitos homens não se sentem preparados para parar de fumar, pela dependência física e psicoemocional.Conclusão: a cessação do vício pode requerer ajuda profissional. É preciso reconhecer o tabagismo como problema de saúde, desejar parar de fumar e identificar o próprio fator motivacional. Objetivo: Conocer los significados atribuidos por el hombre respecto del tabaquismo y elriesgo de padecer cáncer.Método: estudio cualitativo, realizado en instituto especializado en atención de salud de Riode Janeiro, Brasil. Fueron entrevistados 18 hombres fumadores y exfumadores entre noviembrede 2015 y abril de 2016. Se aplicó análisis de contenido de tipo temático.Resultados: La falta de conocimiento sobre el tabaquismo y la sensación de placer proporcionadase relacionaron con una mayor probabilidad de iniciarse en el hábito. El significadoatribuido por los hombres a la relación con el proceso salud-enfermedad se vinculó a la historiafamiliar o a la propia vulnerabilidad. Pero muchos hombres no se sienten preparados paradejar de fumar, por la dependencia física y psicoemocional.Conclusión: La cesación tabáquica puede precisar de ayuda profesional. Es necesario reconoceral tabaquismo como problema de salud, desear dejar de fumar e identificar al propiofactor motivacional.

Objective: To understand the meanings assigned by men to the habit of smoking and its risks related to the development of cancer. Method: Qualitative study conducted in a specialized health care institute in Rio de Janeiro, Brazil. Eighteen men, both smokers and former smokers, were interviewed from November 2015 to April 2016. The data was analyzed using thematic content analysis. Results: Lack of knowledge about the habit of smoking and the feeling of pleasure that it provides were found to be related to a higher probability of starting the habit. The meaning attributed by men to the relationship between smoking and the health-disease process was related to family history or their own vulnerability. However, a number of men did not feel prepared to quit smoking due to their physical and psycho-emotional dependence. Conclusion: Smoking cessation may require professional support. It is necessary to recognize the habit of smoking as a health problem, to want to quit smoking, and to identify personal motivational factors.

info:eu-repo/semantics/publishedVersion