High-density polyethylene (HDPE) geomembranes are commonly used as an environmental protection liner due to their good chemical and mechanical resistances and low cost. Ultraviolet (UV) radiation is an essential issue in durability studies for pond applications. This study evaluated a 1.5-mm thick HDPE geomembrane exposed to ultraviolet fluorescent radiation for 8760 h in a laboratory and thermoanalytical and physical analyses were conducted towards the understanding of its performance after exposure. According to the results, although the geomembrane maintained the ductile behavior, it showed a 52.48% final decrease in stress crack resistance (SCR) compared to virgin SCR. Moreover, a considerable antioxidant depletion occurred after 8760 h exposure shown by the Std. OIT (standard oxidative-induction time) results, demonstrating a Std. OIT value decrease of 89.19% compared to the virgin Std. OIT. Such a behavior contributed to the susceptibility of thermal effects in the DSC (differential scanning calorimetry) curves and the losses observed in the SCR values, attesting the geomembrane’s oxidative degradation mechanism occurred and changed the polymer’s structure. Highdensity High density (HDPE cost UV (UV applications 1.5mm 15mm mm 1.5 1 5 876 results 5248 52 48 52.48 (SCR Moreover Std standard oxidativeinduction induction time 8919 89 19 89.19 differential calorimetry values s polymers polymer structure 5mm 15 1. 87 524 4 52.4 891 8 89.1 52. 89.

Abstract Introduction: The Wood Thrush is a migratory bird that has experienced dramatic declines in its populations in recent decades. This species overwinters in forest fragments with intermediate levels of habitat modification in Central America. However, more studies detailing the use of remnant forests through time are needed to elucidate the threats this species faces in the wintering grounds. Objective: To understand the effects of environmental and forest structure variables on the occupancy of Wood Thrush in Northern Costa Rica. Methods: The study area was the Área de Conservación Guanacaste (ACG), located in Northern Costa Rica, in December 2016, and during the 2018-2019 migration season. We estimated Wood Thrush occupancy and detection probability in four locations of ACG (dry forest, cloud forest, and two locations in the wet forest) using single-season occupancy models. We also estimated Wood Thrush occupancy and probability of persistence in different months in three vegetation types (open area, secondary forest, and old-growth forest) in the wet forest of ACG using a multi-season occupancy model approach. Results: Wood Thrush occupancy was best described by precipitation in the four locations of the ACG; the probability of occupancy increased with precipitation. The average occupancy of Wood Thrushes varied with vegetation type: open area with shrubs and forest edge (0.69 ± 0.09), secondary forest (0.46 ± 0.1), and old-growth forest (0.61 ± 0.1). Wood Thrush probability of persistence responded partially to changes in precipitation, with an unexpected increase in persistence when the rainfall continued decreasing in the season. Conclusion: Wood Thrush occupancy was best predicted by changes in precipitation considering a larger spatial scale. Its probability of persistence partially varied with precipitation. An increase in persistence closer to Spring migration might be explained by the start of the breeding season of resident birds, potentially reducing territorial conflicts and conserving energy before migration. The long-term protection of wet forests in Northern Costa Rica is of paramount importance for the conservation of Wood Thrushes in their wintering grounds.

Resumen Introducción: El Zorzal del Bosque es un ave migratoria que ha experimentado caídas dramáticas en sus poblaciones en las últimas décadas. Esta especie pasa el invierno en fragmentos de bosque con niveles intermedios de modificación de hábitat en Centroamérica. Sin embargo, se necesitan más estudios que detallen el uso de los bosques remanentes a lo largo del tiempo para dilucidar las amenazas que enfrenta esta especie en las zonas de invernada. Objetivo: Comprender los efectos de variables ambientales y de estructura del bosque en la ocurrencia del Zorzal del Bosque en el Norte de Costa Rica. Métodos: El área de estudio fue el Área de Conservación Guanacaste (ACG), ubicada en el Norte de Costa Rica, en diciembre de 2016, y en la temporada migratoria 2018-2019. Estimamos la ocurrencia y la probabilidad de detección del Zorzal del Bosque en cuatro ubicaciones de ACG (bosque seco, bosque nuboso y dos ubicaciones en el bosque húmedo) utilizando modelos de ocurrencia de una sola temporada. También estimamos la ocurrencia del Zorzal del Bosque y la probabilidad de persistencia en diferentes meses en tres tipos de vegetación (área abierta, bosque secundario y bosque primario) en el bosque húmedo de ACG utilizando un enfoque de modelo de ocurrencia multi-estacional. Resultados: La ocurrencia del Zorzal del Bosque estuvo mejor descrita por la precipitación en las cuatro localidades del ACG; la probabilidad de ocurrencia aumentó con las precipitaciones. La ocurrencia media de zorzales varió con el tipo de vegetación: área abierta con arbustos y borde de bosque (0.69 ± 0.09), bosque secundario (0.46 ± 0.1) y bosque primario (0.61 ± 0.1). La probabilidad de persistencia del zorzal respondió parcialmente a cambios en la precipitación, con un aumento inesperado en la persistencia cuando las precipitaciones continuaron disminuyendo en la temporada. Conclusión: La ocurrecia del Zorzal del Bosque varió con la precipitación considerando una escala espacial mayor. Su probabilidad de persistencia varió parcialmente con la precipitación. Un aumento en la persistencia más cerca de la migración de primavera podría explicarse por el inicio de la temporada de reproducción de las aves residentes, lo que podría reducir los conflictos territoriales y conservar energía antes de la migración. La protección a largo plazo de los bosques húmedos en el norte de Costa Rica es de suma importancia para la conservación de los Zorzales del Bosque en sus zonas de invernada.

ABSTRACT Social technology is based around three axes: community, environmental protection and economic solidarity. The páramo itself is a vital ecosystem for water regulation as it is the source of water supplies for human consumption and performance of economic activities. This article intends to identify the limitations to apply social technology to the protection of the páramo in the central highlands of Ecuador, where processes of self-management, empowerment, participation, agreement-making, cooperation and pursuit for collective welfare have been observed. The methodology is quantitative within the framework of discourse analysis. The results show that, in order to reach a large agreement for the protection and recovery of the páramo, involving all of the communities settled in the area, it is necessary to overcome limitations mostly related to the lacking attention by the government in regards to basic utilities, management plans for conservation areas and studies for economic alternatives allowing communities to subsist in the lower zones, compromising not to extend their agricultural borders further into the highlands. This information helps strengthen natural resource management from a new perspective.

RESUMEN La tecnología social se fundamenta en tres ejes: la comunidad, el cuidado ambiental y la solidaridad económica. Por su parte, el páramo es un ecosistema vital en la regulación hídrica porque sustenta el suministro de agua para consumo humano y el desarrollo de actividades económicas. Este artículo se centra en identificar las limitaciones para aplicar los fundamentos de la tecnología social en la protección del páramo, ubicado en la Sierra central del Ecuador, lugar donde se observan procesos de autogestión, empoderamiento, participación, logro de acuerdos, cooperación y búsqueda del bienestar colectivo. La metodología es cualitativa, en el marco del análisis del discurso. Los resultados muestran que, para que exista un gran acuerdo de protección y recuperación del páramo, entre todas las comunidades asentadas en esta zona, es necesario vencer limitaciones relacionadas, principalmente, con la falta de atención por parte del gobierno en temas de servicios básicos, planes de manejo para áreas de conservación y estudio de alternativas económicas que permitan a las comunidades subsistir en las zonas bajas y comprometerse a no ampliar la frontera agrícola hacia zonas altas. Esta información contribuye a fortalecer la gestión de recursos naturales desde una nueva perspectiva.

RESUMO A tecnologia social baseia-se em três eixos: a comunidade, o cuidado ambiental e a solidariedade econômica. O páramo é um ecossistema vital para a regulação hídrica pois ele fornece agua para o consumo humano e a realização de atividades económicas. Esse artigo focou-se na identificação das limitações para aplicar os fundamentos da tecnologia social para a proteção do páramo, situado na Sierra central de Equador, sítio onde pode-se observar processos de autogestão, empoeiramento, participação, efetuação de acordos, cooperação e procuração de um bem-estar coletivo. A metodologia é qualitativa, dentro do contexto da análise do discurso. Os resultados mostram que, para ter um acordo grande para a proteção e recuperação do páramo, com todas as comunidades estabelecidas na zona, é necessário vencer limitações relacionadas principalmente à falta de atenção do governo em relação à serviços básicos, planes de gestão de áreas de conservação e estudo de alternativas económicas que permitam que as comunidades possam subsistir nas zonas baixas, e comprometer-se a não estender a fronteira agrícola em direção às zonas altas. Essa informação contribui a fortalecer a gestão de recursos naturais com uma nova perspectiva.

Abstract In the context of the international political economy, the human rights protection regime and the foreign investor regime are in tension because of a legal architecture that privileges freedom of capital. A content analysis of the Escazú Agreement would reveal, with respect to access to justice in environmental matters, that individuals and civil society have access to judicial and administrative instances contemplated in national legislation, while foreign investors under bilateral investment treaties (BITs) and free trade agreements (FTAs) have access to justice through international arbitration tribunals that are not always independent, impartial and that privilege the interests of the market. This legal architecture conditions the actions of States in relation to society and its rights. The conclusions point out that the Escazú Agreement faces legal challenges in terms of the investor protection regime, where economic guarantees limit concrete actions to address the climate crisis, protect the environment or enforce human rights.

Resumen En el contexto de la economía política internacional, el régimen de protección de derechos humanos y el régimen de inversores extranjeros atraviesan tensiones como resultado de una arquitectura jurídica que privilegia la libertad de capitales. Un análisis de contenido del Acuerdo de Escazú revelaría, respecto al acceso a la justicia en temas ambientales, que las personas y la sociedad civil acceden a instancias judiciales y administrativas contempladas en la legislación nacional de cada país, mientras que los inversores extranjeros, bajo la figura de los tratados bilaterales de inversión (TBI) y libre comercio (TLC), recurren a la justicia mediante tribunales de arbitraje internacional que no siempre son independientes, imparciales y que privilegian los intereses del mercado. Esta arquitectura jurídica condiciona el accionar de los Estados frente a la sociedad civil y sus derechos. El Acuerdo de Escazú atraviesa desafíos jurídicos frente al régimen de protección a los inversores, en el cual las garantías económicas limitan las acciones concretas para abordar la crisis climática, proteger el medioambiente o hacer efectivos los derechos humanos.

RESUMO Este artigo analisa a implementação da Lei Florestal na província de Formosa que, ao contrário de outras províncias, concedeu à maioria das suas florestas nativas a categoria de proteção mais baixa da lei. Utilizando uma metodologia qualitativa, este trabalho reconstrói o processo de desenho e sanção do ordenamento de florestas nativas na província de Formosa e busca identificar quais fatores explicam seu desenho. Existe uma literatura consolidada que nos permite compreender a diversidade das respostas provinciais à política nacional de proteção das florestas nativas. No artigo discutimos esta literatura e propomos uma hipótese que reformula o peso relativo das variáveis em jogo para o caso estudado e eventualmente para outros casos provinciais. O trabalho permite mostrar que o desenho do ordenamento de florestas nativas na província de Formosa é melhor explicado como resultado do confronto e negociação do governo provincial com as autoridades ambientais nacionais em torno da política nacional do que pela incidência de coalizões de atores sociais e estatais confrontando-se entre si. O resultado deste processo de ordenamento florestal permitiu ao governo provincial combinar uma política de desenvolvimento produtivista com as exigências da política ambiental nacional.

RESUMEN Este artículo analiza la implementación de la Ley de Bosques en la provincia de Formosa que, en contraste con otras provincias, otorgó a la mayoría de sus bosques nativos la categoría de protección más baja de la ley. Haciendo uso de una metodología cualitativa, el presente trabajo reconstruye el proceso de diseño y sanción del ordenamiento de bosques nativos en la provincia de Formosa y busca identificar qué factores explican su diseño. Existe una literatura consolidada que permite entender la diversidad de respuestas provinciales a la política nacional de protección de los bosques nativos. En el artículo discutimos esa literatura y planteamos una hipótesis que reformula el peso relativo de las variables en juego para el caso estudiado y eventualmente para otros casos provinciales. El trabajo permite mostrar que el diseño del ordenamiento de bosques nativos en la provincia de Formosa se explica mejor como resultado de la confrontación y negociación del gobierno provincial con las autoridades ambientales nacionales en torno a la política nacional que por la incidencia de coaliciones de actores sociales y estatales confrontadas entre sí. El resultado de este proceso de ordenamiento de bosques le permitió al gobierno provincial conjugar una política de desarrollo productivista con los requerimientos de la política ambiental nacional.

ABSTRACT This paper analyses the implementation of the Forest Law in the province of Formosa, which, in contrast with other provinces, granted most of its native forests the lowest category of protection under the law. Using a qualitative methodology, this paper reconstructs the design and sanctioning process of native forest regulation in the province of Formosa and seeks to identify the factors that explain its design. There is a consolidated literature that allows us to understand the diversity of provincial responses to the national policy for the protection of native forests. In this paper we discuss this literature and propose a hypothesis that reformulates the relative weight of the variables at stake for the case studied and eventually for other provincial cases. The paper shows that the design of native forest management in the province of Formosa can be better explained as a result of the confrontation and negotiation of the provincial government with the national environmental authorities around the national policy, than by the incidence of coalitions of social and state actors confronting each other. The result of this forest management process allowed the provincial government to combine a production-oriented development policy with the requirements of the national environmental policy.

ABSTRACT Introduction: Influenza is a global threat, with high epidemic potential and affects between 5 and 15% of the world's population annually. In the hospital environment, vaccination is crucial to protect healthcare professionals. However, despite international recommendations, vaccination uptake is low due to safety concerns and/or distrust. Studies show that vaccinated professionals have lower rates of absenteeism, and when infected with the virus, they present milder symptoms. In this work, a retrospective cross-sectional observational study is carried out on the vaccination rate against this disease in a population of hospital-based workers, from 2019 to 2023. To understand the importance of vaccination against Influenza in these workers and which behavioral determinants may justify considering this evolution, we carried out a review of the challenges of vaccination among health professionals and identified key points to develop strategies with the aim of promoting adherence to vaccination campaigns. Methodology: For the observational study, vaccination data from hospital health professionals by the Occupational Health Service was used, recorded on a specific form at the time of administration. Professional category was the only variable considered. Data analysis was performed using Microsoft® Excel®. For the review, the databases Medline, Science Direct and Google Scholar were used, with the keywords "Influenza vaccine”, “health professional” and “behaviour”, selecting studies from 2010 to 2024. From the result of 1277 works, the exclusion criteria, which included vaccination for other diseases and target populations that did not include health professionals, 22 bibliographic sources were selected. To reflect the national reality, articles on the topic published by the Revista Portuguesa de Saúde Ocupacional Online were included, as well as complementary studies and reference documents. Results: The study of adherence to flu vaccination in this hospital peripheral to Lisbon, between 2019 and 2023, showed a variation in vaccination adherence, with an average of 30%, a value below the ones reported in other countries. The categories most hesitant about this vaccine were Nursing Staff and Technical Assistants; at the opposite extreme, there was greater adherence from Medical Personnel and Technical Assistants. During the COVID-19 Pandemic, an increasing number of professionals were vaccinated annually, with this trend reversing after the end of the global emergency of this disease. From the review of the literature on vaccine hesitancy, 8 of the 14 behavioral domains stand out that represent theories of behavioral change that constitute modifiable factors that influence behavior in relation to the vaccine. We approach each of them from this perspective, namely: knowledge, the environmental context and resources, social influence, beliefs and knowledge about consequences, beliefs about individual capacity, identity and social/professional role, reinforcement and emotion. Discussion: Flu vaccine hesitancy among healthcare professionals can be a cause of morbidity and mortality for patients. Understanding the barriers and motivation for healthcare professionals to adhere to flu vaccination campaigns is crucial. Professionals who are asymptomatic carriers become sources of transmission. Annual vaccination, although safe and effective, faces variability due to antigenic concordance. In Portugal, educational and communication strategies are vital, highlighting the role of health professionals as models of preventive behavior. Easy access to medical consultations and Occupational Health recommendations is associated with greater adherence. In times of pandemic, the propensity for vaccination has increased, and it is important to promote this change. Strategies adapted to the cultural context are essential to boost adherence to Influenza vaccination among healthcare professionals. Conclusion: The approach to combating barriers and promoting vaccination among healthcare professionals must involve multiple areas and multiple levels, with communication targeted at specific groups, to increase its effectiveness. The message must be adapted to different population groups and different levels of health literacy. Knowing these behavioral determinants can help develop vaccination promotion campaigns from new perspectives and finding strategies to increase vaccination coverage is crucial for Occupational Health Services. Due to the ethical characteristics of the professions involved in providing direct care to patients, there is a need to reinforce the idea that vaccination among healthcare professionals is not only for their benefit, but above all for the protection of their patients.

RESUMO Introdução: A Gripe é uma ameaça global, com alto potencial epidémico e afeta anualmente entre 5 a 15% da população mundial. No ambiente hospitalar, a vacinação é crucial para proteger os Profissionais de Saúde. No entanto, apesar das recomendações internacionais, a adesão é baixa devido a preocupações de segurança e/ou desconfiança. Estudos mostram que os profissionais vacinados têm menores taxas de absentismo e, perante infeção pelo vírus, apresentam sintomatologia mais ligeira. Neste trabalho é realizado um estudo observacional transversal retrospetivo da taxa de vacinação contra esta doença numa população de trabalhadores de base hospitalar, no período de 2019 a 2023. Para compreender a importância da vacinação contra a Influenza nestes trabalhadores e quais os determinantes comportamentais que podem justificar esta evolução, realizou-se uma revisão dos desafios da vacinação entre Profissionais de Saúde, para identificar pontos chave e elaborar estratégias com o objetivo de promover a adesão às campanhas de vacinação. Metodologia: Para o estudo observacional da taxa de adesão à vacinação contra a Gripe num hospital periférico foram utilizados os dados de vacinação dos Profissionais de Saúde disponibilizados nos registos do Serviço de Saúde Ocupacional. A categoria profissional foi a única variável considerada. A análise dos dados foi realizada com o Microsoft® Excel®. Para a revisão recorreu-se às bases de dados Medline, Science Direct, Google Scholar; com as palavras-chave "Influenza vaccine”; “health professional” e “behaviour" e filtraram-se estudos de 2010 a 2024. Resultaram 1277 trabalhos e, após aplicar os critérios de exclusão, que incluíam vacinação para outras doenças e populações alvo que não os Profissionais de Saúde, foram selecionadas 22 fontes bibliográficas. Para espelhar a realidade nacional foram incluídos os artigos sobre o tema publicados pela Revista Portuguesa de Saúde Ocupacional Online, assim como estudos complementares e documentos de referência. Resultados: O estudo da adesão à vacinação contra a Gripe neste hospital periférico a Lisboa, entre 2019 e 2023, mostrou uma variação na adesão à vacinação, com uma média de 30%, valor abaixo dos valores reportados noutros países. As categorias com maior hesitação a esta vacina foram o Pessoal de Enfermagem e os Assistentes Técnicos. Na situação oposta estavam o Pessoal Médico e os Assistentes Técnicos. Durante a Pandemia COVID-19 existiu um número crescente de profissionais vacinados anualmente, tendo esta tendência invertido após o fim da emergência global desta doença. Da revisão da bibliografia sobre a hesitação vacinal destaca-se 8 dos 14 domínios comportamentais que representam as teorias de mudança comportamental que constituem fatores modificáveis que influenciam a atitude em relação à vacina. Abordou-se sobre esta perspetiva cada um deles, nomeadamente, o conhecimento; o contexto ambiental e recursos; influência social; crenças e conhecimento sobre consequências; bem como sobre a capacidade individual; identidade e papel social/profissional; reforço e emoção. Discussão: A hesitação vacinal contra a Gripe entre Profissionais de Saúde pode ser uma causa de morbilidade e mortalidade para os doentes. Compreender as barreiras e motivação para a adesão dos Profissionais de Saúde às campanhas de vacinação contra a Gripe é crucial. Profissionais portadores assintomáticos, tornam-se fontes de transmissão. A vacinação anual, embora segura e eficaz, enfrenta variabilidade devido à concordância antigénica. Em Portugal, estratégias educacionais e de comunicação são vitais, destacando o papel dos Profissionais de Saúde como modelos de comportamento preventivo. O acesso fácil a consultas médicas e tal ser recomendado pela Saúde Ocupacional é associado a maior adesão. Em tempos de pandemia, a propensão à vacinação aumentou, importando promover esta mudança. Estratégias adaptadas ao contexto cultural são essenciais para impulsionar a adesão à vacinação contra a Gripe entre Profissionais de Saúde. Conclusão: A abordagem para combater as barreiras e promover a vacinação nos Profissionais de Saúde deve envolver múltiplas áreas e vários níveis, com uma comunicação dirigida a grupos específicos, para aumentar a sua eficácia. Deve adaptar-se a mensagem aos diferentes grupos populacionais e aos diferentes níveis de literacia em saúde. Conhecer estes determinantes comportamentais pode ajudar a desenvolver campanhas de promoção da vacinação a partir de novas perspetivas e encontrar estratégias para aumentar a cobertura vacinal é crucial para os Serviços de Saúde Ocupacional. Pelas características éticas das profissões envolvidas na prestação de cuidados diretos aos doentes, existe a necessidade de reforçar a ideia de que a vacinação entre Profissionais de Saúde não é apenas para seu benefício mas, acima de tudo, para proteção dos seus doentes.

Abstract In this paper the use of expression rights of nature is viewed with a critical approach regarding its effects in other public authorities, including public policies or state policy, such as energetic resources in long term agenda. At first time, those cases have been initiated on a lawsuit inter partes, with effect inter comunis with effect on third parties. For this reason, the whole state assumes the risk of legal international affair related to foreign investment for change material rules related to its economic activities, including obstruction.

Resumen Se presenta un balance crítico de la noción naturaleza sujeto de derechos, cuando se usa esta noción en un fallo interpartes. Esta locución tiene efectos prácticos en otras ramas de poder público, sometiendo al Estado al incumplimiento de compromisos internacionales de protección a la inversión extranjera, al impedir explotar recursos naturales con la introducción de una nueva noción interpretativa, que convierte un objeto en sujeto de derecho, sacándolo del comercio, o variando con la decisión, políticas estatales. Es decir, el efecto inter-comunis del fallo interpartes puede modificar el orden jurídico interno, con efectos contra él y de derechos adquiridos.

Abstract The purpose of the present study was to define the professional competencies and subjects of the conservation and environmental protection axis of the new educational model of the Veterinary Medicine and Zootechnics career of the Autonomous University of Zacatecas, which establishes that the teacher and the student know the competencies by axes in order to make their educational processes more efficient from a global perspective. To do this, we worked with a core academic core of teachers from the academic unit, who were supported by a bibliographic methodology, synthesis and analysis, as well as the understanding of analyzed documents from the field of veterinary medicine. As a result of the teamwork of 50 teachers and 2 specialists in veterinary education, during workshops and based on the documentary review of research articles in veterinary education, through searching in databases such as Scopus, Web of Sciences , Google Schoolar and Dialnet, the following competencies were defined in the axis of conservation and protection of the environment, where the student must be competent in carrying out adequate management and disposal of hazardous infectious biological waste (RPBI), as well as corrosive, reactive, explosive, toxic, flammable and biological material infectious (CRETIB) generated by medical and agricultural activity to avoid environmental contamination and promote good public health. In addition, it must have the capacity to carry out integrated management of the waste produced as a result of agricultural activity to take advantage of it and avoid environmental contamination, as well as design and apply the methodology for the conservation and use of natural resources. The subjects contained in the curricular plan were defined from these competencies.

Resumo O objetivo do presente estudo foi definir as competências e disciplinas profissionais do eixo conservação e proteção ambiental do novo modelo educacional da carreira de Medicina Veterinária e Zootecnia da Universidade Autônoma de Zacatecas, que estabelece que o educador e o aluno conheçam o competências por eixos, com o objetivo de tornar os seus processos educativos mais eficientes numa perspectiva global. Para o que trabalhamos com um núcleo académico constituído por docentes da Unidade Académica, que se apoiaram numa metodologia bibliográfica, de síntese e análise, bem como na compreensão de documentos analisados da medicina veterinária. Como resultado do trabalho em equipe de 50 professores e 2 especialistas em educação veterinária durante oficinas e com base na revisão documental de artigos de pesquisa em educação veterinária por meio da busca nas bases de dados Scopus, Web of Sciences, Google Schoolar e Dialnet, foram definidas as seguintes competências no eixo de conservação e proteção do meio ambiente onde o aluno deve ter competência na realização de gestão e destinação adequada de resíduos biológicos infecciosos perigosos (RPBI), bem como de resíduos biológicos corrosivos, reativos, explosivos, tóxicos, inflamáveis e infecciosos (CRETIB) gerados pela atividade médica e agrícola para evitar a contaminação ambiental e promover a boa saúde pública. Da mesma forma, deve ter capacidade para realizar a gestão integrada dos resíduos produzidos pela actividade agrícola para aproveitá-los e evitar a contaminação ambiental, bem como conceber e aplicar a metodologia de conservação e aproveitamento dos recursos naturais. recursos. As disciplinas constantes do plano curricular são definidas a partir destas competências.

Resumen El propósito del presente estudio fue definir las competencias profesionales y las materias del eje de conservación y protección al medio ambiente del nuevo modelo educativo de la carrera de Medicina Veterinaria y Zootecnia de la Universidad Autónoma de Zacatecas, la cual establece que el docente y el educando conozcan las competencias por ejes con la finalidad de hacer mas eficientes sus procesos educativos desde una óptica global. Para ello, se trabajó con un núcleo académico base de docentes de la unidad académica, los cuales se apoyaron en una metodología bibliográfica, síntesis y análisis, así como en la comprensión de documentos analizados del ámbito de la medicina veterinaria. Como resultado del trabajo en equipo de 50 docentes y 2 especialistas en educación veterinaria, durante talleres de trabajo y con base en la revisión documental de artículos de investigación en educación veterinaria, a través de la búsqueda en bases de datos como Scopus, Web of Sciences, Google Schoolar y Dialnet, se definieron las siguientes competencias en el eje de conservación y protección al ambiente, donde el estudiante debe de ser competente en la realización de un manejo y disposición adecuada de los residuos peligrosos biológico infecciosos (RPBI), así como de material corrosivo, reactivo, explosivo, tóxico, inflamable y biológico infeccioso (CRETIB) generados por la actividad médica y agropecuaria para evitar la contaminación del ambiente y propiciar una buena salud pública. Además, debe tener la capacidad de realizar un manejo integrado de los residuos producidos como resultado por la actividad agropecuaria para aprovecharlos y evitar la contaminación del ambiente, así como diseñar y aplicar la metodología para la conservación y aprovechamiento de los recursos naturales. De estas competencias se definieron las asignaturas contenidas en el plan curricular.

Abstract Nonferrous metal smelting operations are a recognized source of metal accumulation in surrounding soils. In Mednogorsk, Russia, soil contamination results from atmospheric emissions from a local copper (Cu) smelter. This study aimed to assess health risks by analyzing the levels of Cu, arsenic (As), cadmium (Cd), lead (Pb), and zinc (Zn) in 20 Mednogorsk topsoil samples and three background area samples. The phytotoxicity of metals to Lolium perenne was also evaluated. The soil ingestion protocol of the US Environmental Protection Agency was used for health risk assessment. Phytotoxicity tests were performed on ryegrass using a standard protocol. The levels of Cu correlated with those of other elements, indicating that the smelter was the source. Of concern, the carcinogenic risk exceeded the 10−04 threshold in 85% and 15% of the samples for children under five years of age and adults, respectively. In addition, 60% of the samples exceeded the safe Pb threshold for children's health (80 mg kg−1). These risk levels are unacceptable and require specific intervention by the relevant authorities. However, only 20% of the samples showed high phytotoxicity, mostly in acidic soils (pH<4.0). This discussion focuses on the potential of soil phytostabilization to reduce human metal exposure, as the results provide valuable insights for managing metal pollution in regions affected by nonferrous smelter emissions worldwide.

Resumen Las fundiciones de metales no ferrosos son una fuente reconocida de acumulación de metales en los suelos circundantes. En Mednogorsk, Rusia, la contaminación del suelo se debe a las emisiones atmosféricas de una local fundición de cobre. Este estudio tiene como objetivo evaluar los riesgos para la salud humana mediante el análisis de los contenidos de cobre, arsénico, cadmio, plomo y zinc en 20 muestras de suelos de Mednogorsk y tres muestras de suelos del área no contaminada. Complementariamente, se evaluó la fitotoxicidad de los metales para una especie indicadora, Lolium perenne, utilizando un protocolo estándar. Para la evaluación de riesgos para la salud humana, se utilizó el protocolo de la Agencia de Protección Ambiental de los EEUU. Los contenidos de cobre se correlacionaron con los de otros elementos, lo que indica que la fundición de cobre es la fuente de emisión. Lo preocupante es que el riesgo cancerígeno superó el umbral de 10−4 en el 85% de las muestras para niños de edad <5 años y en el 15% de las muestras para los adultos. Además, el umbral de plomo considerado seguro para la salud infantil (80 mg kg−1) se superó en el 60% de las muestras. Estos niveles de riesgo son inaceptables y requieren una intervención específica por parte de las autoridades pertinentes. Sin embargo, sólo el 20% de las muestras mostraron alta fitotoxicidad en L. perenne, principalmente en suelos ácidos (con pH <4,0). Considerando estos resultados, se evalúe la factibilidad de un proceso de fitoestabilización del suelo para reducir la exposición humana a los metales. Los resultados proporcionan información valiosa para gestionar la contaminación por metales en regiones afectadas por emisiones de fundiciones no ferrosas en todo el mundo.

RESUMEN La contaminación ambiental plantea desafíos significativos que requieren abordarse mediante la educación ambiental y por ende en las estrategias educativas. La educación ambiental empodera a las personas para adoptar comportamientos sostenibles. Las estrategias educativas, como programas ambientales y enfoques innovadores, promueven la educación ambiental y forman ciudadanos comprometidos con el medio ambiente, integrar esta educación en el currículo y la sociedad genera conciencia colectiva y promueve la protección del entorno natural. El presente artículo es una revisión exhaustiva y estructurada de los estudios más actuales relacionados con diversas técnicas y metodologías educativas enfocadas en aumentar la conciencia ambiental en entornos escolares; se busca analizar las diferentes estrategias educativas para mejorar la conciencia ambiental en las escuelas. El diseño de la investigación es cualitativo, de tipo teórico sistemático. La técnica empleada es el análisis documental. Se revisó diversas bases de datos científicas tales como MyLOFT, google publicación en revistas científicas desde el año 2019 indexadas en Scopus, Scielo, Web of Science, Scopus, ProQuest, y Google Scholar, también se usa la metodología PRISMA. Los resultados obtenidos del análisis de diversas investigaciones brindan datos favorables y significativos que respaldan de manera contundente la existencia de una relación positiva entre la alfabetización ambiental y la conciencia ambiental en los estudiantes y miembros de una comunidad educativa. Estos resultados se atribuyen a la implementación de estrategias, modelos y propuestas que han contribuido a mejorar la conciencia ambiental en el entorno escolar.

ABSTRACT Environmental pollution presents significant challenges that need to be addressed through environmental education and, therefore, in educational strategies. Environmental education empowers individuals to adopt sustainable behaviors. Educational strategies, such as environmental programs and innovative approaches, promote environmental education and cultivate environmentally engaged citizens. Integrating this education into the curriculum and society generates collective awareness and promotes the protection of the natural environment. This article is a comprehensive and structured review of the most recent studies related to various educational techniques and methodologies focused on increasing environmental awareness in school settings. The research design is qualitative and of a systematic theoretical nature. The documentary analysis technique was employed. Various scientific databases, such as MyLOFT, Google Scholar, Scopus, SciELO, Web of Science, and ProQuest, were reviewed for scientific publications from 2019 onwards. The PRISMA methodology was also used. The results obtained from the analysis of various research studies provide strong and significant data that firmly support the existence of a positive relationship between environmental literacy and environmental awareness among students and members of an educational community. These results are attributed to the implementation of strategies, models, and proposals that have contributed to improving environmental awareness in the school environment.

Abstract: The expected population growth will increase global food consumption, particularly meat consumption, which is estimated to increase 14% by 2030. Hence, the efficient utilization of all the resources involved in meat production, predominantly feed additives in livestock, is important due to economic costs and the high environmental in terms of gas production and ammonia excretion. Efforts have been made to increase efficiency in livestock production and improve the absorption and utilization of nutrients. Nevertheless, advances in technology in the chemical, pharmaceutical, and food industries have barely been used by the livestock and poultry industry. The micro/nano encapsulation process has been used in animal nutrition to protect bioactive compounds or to control the release of feed additives into the animal gastrointestinal tract, avoiding rumen microbes attack, or monogastric digestion in swine and poultry, to be available in the small intestine. However, not all the encapsulation techniques are suitable for applications in animal feeding. For example, spray drying, emulsion and coacervation can be used to control the release of feed additives in ruminants. In this sense, micro encapsulation of different feed additives such as amino acids, fatty acids, and probiotics may face enormous challenges to help improve livestock and poultry nutrition. The objective of this review is to highlight and discuss the techniques, compounds, and key aspects involved in the encapsulation of feed additives and nutrients with potential applications in the livestock and poultry production.

Abstract: This article evaluates the fulfillment of electoral pledges on trade policy by US presidents in the period from 1989 to 2021 with the aim of identifying patterns of continuity and change in the agenda of the parties and the country. The identification of promises was made based on the analysis of the campaign manifestos of the parties of the presidents elected in the period. The criterion established to evaluate the fulfillment of the pledges was the implementation of an action. There are similar degrees of compliance between Democrats and Republicans, whose agendas (i) are similar in terms of free trade agreements and protectionist measures and (ii) diverge in relation to the adherence of labor rights and environmental protection commitments in these agreements. Original, it contributes to the debate on the quality of democratic representation by measuring the degree of responsiveness of political parties in a policy of special interest to American workers. At the same time, it shows how bipartisan continuity and convergence were fundamental in guiding US trade policy.

Resumo: Este artigo avalia o cumprimento de promessas eleitorais sobre política comercial pelos presidentes dos EUA no período de 1989 a 2021 com o intuito de identificar padrões de continuidade e de mudança na agenda dos partidos e do país. A identificação de promessas foi feita a partir da análise dos manifestos de campanha dos partidos dos presidentes eleitos no período. O critério estabelecido para avaliar o cumprimento da promessa foi o da implementação da ação. Verifica-se graus de cumprimento similares entre Democratas e Republicanos, cujas agendas (i) aproximam-se no tocante aos acordos de livre-comércio e às medidas protecionistas e (ii) afastam-se em relação à aderência aos direitos trabalhistas e aos compromissos de proteção ambiental nestes acordos. Original, contribui com o debate sobre a qualidade da representação democrática ao aferir o grau de responsividade dos partidos políticos em uma política de especial interesse para os trabalhadores americanos. Ao mesmo tempo, mostra como a continuidade e convergência bipartidária foram fundamentais para orientar a política comercial dos EUA.

Pesticide residues and heavy metal content of cassava, yam, cocoyam, potato, water yam and carrot were evaluated by gas chromatography-mass spectrometry and atomic absorption spectroscopy. The detected pesticide residues in the samples were 2,4-dichlorophenoxyacetic acid, glyphosate, hexachlorobenzene (HCB), dichlorobiphenyl, aldrin, endosulfan, profenofos, g-chlordane, carbofuran, biphenyl, heptachlor, lindane and t-Nonachlor. The concentration of HCB ranged between 0.0799 ± 0.06 mg/kg and 0.1596 ± 0.00 mg/kg, which was greater than the permitted maximum limit of 0.5 mg/kg established by the US Environmental Protection Agency. The concentration of aldrin and profenofos detected was lower than the predetermined maximum allowed limits. Endosulfan concentrations in cocoyam (0.2500 mg/kg) and potato (0.3265 mg/kg) were higher than the limits allowed by the Canadian Department of Industrial Research. The heavy metals detected in these samples include cobalt, nickel, lead, manganese, chromium, arsenic and mercury in at least one of the samples evaluated. There was not much difference between the concentration of cobalt in yam (0.036 mg/kg) and the maximum allowed concentration (0.043 mg/kg). Lead was detected in potatoes and carrots but was below detectable concentration in cassava, yam, cocoyam and water yam. Similarly, cocoyam was found to have a significant mercury content (0.658 mg/kg), but mercury content was below detectable concentrations in cassava, yam and water yam. SIGNIFICANCE: Heavy metal pollutants and pesticide residues can impair human health, and their presence in food can cause various illnesses and health issues. It is important to prevent exposure to these contaminants and ensure that food is safe by identifying and monitoring them. Farmers may provide consumers with more assurance that their products are safe by identifying and monitoring pesticide residues and heavy metal contamination in these food crops. Overall, it is crucial to find and monitor pesticide residues and heavy metal contamination in food to safeguard customer confidence, ensure legal compliance and preserve human health.

ABSTRACT In current agriculture it is necessary to control the safety of the food that is produced, for this it is vital to take into account the levels of contamination caused by heavy metals. One aspect to consider is the study of soil quality to preserve or improve its productivity, in order to guarantee environmental protection, human health and food safety. Trace elements in high concentrations in soils are food toxins with negative effects on health that manifest themselves in the long term as a result of the consumption of contaminated food and water. The objective of this work is: to study mathematical models to predict the behavior of cobalt, lead and zinc concentrations in agricultural soil, adjacent to the dumping of industrial waste in the San José de las Lajas municipality. For this, the concentration data of heavy metals cobalt (Co), lead (Pb) and zinc (Zn) were taken from the year 2005 to the year 2018 to predict their behavior from the use of statistical-mathematical tools until the year 2034. It was obtained that, according to the mathematical models obtained, these soils should not be used to grow vegetables for consumption, at least until 10 years after this investigation.

RESUMEN En la agricultura actual es necesario controlar la inocuidad de los alimentos que se producen, para ello es vital tener en cuenta los niveles de contaminación que provocan los metales pesados. Un aspecto a considerar es el estudio de calidad del suelo para conservar o mejorar su productividad, de forma que se garantice la protección ambiental, la salud humana y la seguridad alimentaria. Elementos traza en concentraciones elevadas en suelos son tóxicos alimentarios con efectos negativos sobre la salud que se manifiestan a largo plazo como resultado del consumo de aguas y alimentos contaminados. El presente trabajo plantea como objetivo: estudiar modelos matemáticos para predecir el comportamiento de las concentraciones de cobalto, plomo y zinc en un suelo agrícola, aledaño al vertimiento de residuos industriales en el municipio San José de las Lajas. Para ello se tomaron los datos de concentración de metales pesados cobalto (Co), plomo (Pb) y zinc (Zn) desde el año 2005 al año 2018 para predecir su comportamiento a partir del uso de herramientas estadístico-matemáticas hasta el año 2034. Se obtuvo que, según los modelos matemáticos obtenidos, estos suelos no deban emplearse para cultivar hortalizas con objeto de consumo, al menos hasta 10 años después de esta investigación.

RESUMEN La valoración económica de los bienes y servicios ecosistémicos es una herramienta necesaria para los gobiernos en la cuantificación de la madre naturaleza, lo que contribuye a direccionar las diferentes actividades económicas. Por tal motivo, se propone como objetivo de la investigación el diagnostico de los bienes y servicios ecosistémicos en la comunidad La Melba y su valoración económica. Se aplica la técnica de entrevistas no estandarizadas a especialistas que investigan sobre el medio ambiente, forestales, microbiólogos, biólogos e hidráulicos para la identificación de los diferentes bienes y servicios que brinda el ecosistema en el Sector La Melba; el método de transferencia de beneficios (MTB) el que permite referenciar los estudios realizados por el Instituto de Investigación de la Agro-Forestal de La Habana en suelos forestales con características similares al Sector La Melba y el método de valoración basado en precios de mercado. Lo expuesto posibilita a los directivos del gobierno local y a la comunidad La Melba conocer los bienes y servicios que brinda el ecosistema y su valor económico total de aproximadamente $ 121 432 99 784,2696, permite además perfeccionar la toma de decisiones encaminada a la protección y conservación del ecosistema.

ABSTRACT The economic valuation of ecosystem goods and services is a necessary tool for governments in quantifying Mother Nature, which contributes to directing different economic activities. For this reason, the objective of the article is the diagnosis of ecosystem goods and services in the La Melba community and their economic valuation. The non-standardized interview technique is applied to specialists who investigate the environment, forestry, microbiologists, biologists and hydraulics for the identification of the different goods and services provided by the ecosystem in the La Melba Sector; the benefit transfer method (MTB), which allows reference to the studies carried out by the Agro-Forestry Research Institute of Havana on forest soils with similar characteristics to the La Melba Sector, and the valuation method based on market prices. The above enables local government managers and the La Melba community to know the goods and services provided by the ecosystem and their total economic value of approximately $121 432 99 784, 2696, and also allows them to improve decision-making aimed at the protection and ecosystem conservation.