Environmental variability and fishing effects on the Pacific sardine fisheries in the Gulf of California

Small pelagic fish support some of the largest fisheries globally, yet there is an ongoing debate about the magnitude of the impacts of environmental processes and fishing activities on target species. We use a nonparametric, nonlinear approach to quantify these effects on the Pacific sardine (Sardinops sagax) in the Gulf of California. We show that the effect of fishing pressure and environmental variability are comparable. Furthermore, when predicting total catches, the best models account for both drivers. By using empirical dynamic programming with average environmental conditions, we calculated optimal policies to ensure long-term sustainable fisheries. The first policy, the equilibrium maximum sustainable yield, suggests that the fishery could sustain an annual catch of ∼2.16 × 105 tonnes. The second policy with dynamic optimal effort, reveals that the effort from 2 to 4 years ago impacts the current maximum sustainable effort. Consecutive years of high effort require a reduction to let the stock recover. Our work highlights a new framework that embraces the complex processes that drive fisheries population dynamics yet produces simple and robust advice to ensure long-term sustainable fisheries.Published versio

Perspectivas de la empresa y la economía mexicana frente a la reestructuración productiva

1 archivo PDF (404 páginas)Este texto se presenta una reflexión de investigadores de la UAM, así como de otras Instituciones de Educación Superior respecto al marco en el que se han desenvuelto las empresas mexicanas en los últimos años, así como del desarrollo en algunos de sus sistemas organizacionales. PALABRAS CLAVE: Mexico Economic policy 1970-1994

Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

Abstract Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries

Liriodenine and Its Probable Role as an Osmolyte during Water Stress in <i>Annona lutescens</i> (Annonaceae)

In tropical deciduous forests (TDFs), plants have developed various strategies to tolerate desiccation during the dry season. One strategy is osmotic adjustment, which includes the accumulation of secondary metabolites. Annona lutescens, a species that inhabits TDFs, increases and accumulates liriodenine alkaloid in its roots during the dry season. In this study, we evaluate the possible role of this molecule as an osmolyte and in pH homeostasis. We performed growth analyses and determined liriodenine concentrations during water stress in Annona lutescens seedlings grown under controlled temperature, water, and light conditions. We also calculated their osmotic adjustment based on pressure–volume curves and performed solubility tests along a pH gradient. Osmotic adjustment was compared between control plants (irrigated) and plants subjected to 15, 25, and 35 days of water stress. Osmotic adjustment was dramatically higher in plants subjected to 35 days of water stress compared to the control. The solubility of liriodenine was 54% at pH 4.5, and when liriodenine was in contact with malic acid solutions, the pH increased slightly. The highest concentration of liriodenine was in the roots, with a significant increase from 540.855 μg g−1 after 15 days of water stress to 1239.897 μg g−1 after 35 days. Our results suggest that liriodenine plays an important role in the response to water stress as an osmolyte and in pH homeostasis

Engaging the tropical majority to make ocean governance and science more equitable and effective

How can ocean governance and science be made more equitable and effective? The majority of the world’s ocean-dependent people live in low to middle-income countries in the tropics (i.e., the ‘tropical majority’). Yet the ocean governance agenda is set largely on the basis of scientific knowledge, funding, and institutions from high-income nations in temperate zones. These externally driven approaches undermine the equity and effectiveness of current solutions and hinder leadership by the tropical majority, who are well positioned to activate evidence-based and context-specific solutions to ocean-sustainability challenges. Here, we draw together diverse perspectives from the tropics to propose four actions for transformational change that are grounded in perspectives, experiences, and knowledge from the tropics: 1. Center equity in ocean governance, 2. Reconnect people and the ocean, 3. Redefine ocean literacy, and 4. Decolonize ocean research. These actions are critical to ensuring a leading role for the tropical majority in maintaining thriving ocean societies and ecosystems

Sob o signo neoliberal: as relações internacionais da América Latina

As relações internacionais da América Latina são vistas sob o ângulo da transição da diplomacia do desenvolvimento para a diplomacia neoliberal. Os estudos de relações internacionais, particularmente no Brasil e na Argentina, fundamentam a interpretação do autor sobre benefícios e malogros do paradigma neoliberal, visto como uma opção ideológica. A noção de Estado logístico é sugerida como alternativa estratégica ao Estado normal.<br>In this article, international relations in Latin America are analysed through the viewpoint of the transition from a diplomacy of development to a neoliberal model. Studies in International Relations as a discipline, especially those carried out in Brazil and Argentina, are the basis for the author's interpretation about benefits and failures of the neoliberal paradigm, understood as an ideological option. The author forwards the notion of Logistic State as a strategic alternative to the Normal State

Medicina de Urgencias Tomo 1

Public health represents one of the greatest challenges in society, which is why it is essential to strengthen the links of scientific cooperation between the academy and the community under a common premise: guarantee the health of the population. In Ecuador, public health faces a historical challenge framed by two edges: the health crisis due to the Covid-19 pandemic and the shortcomings of the social system. This leads to thinking about both the importance of the problem and its possible solutions. Despite this, it is undeniable to affirm that all health personnel share a common ideology and the same commitment, guaranteeing the health of the population.Obviously it is not an easy task due to social uncertainty and the possible appearance of new diseases; however, it is based on a common denominator: basing decisions on the available scientific evidence or what is known as evidence-based medicine. The generation of new knowledge and the use of the best available scientific evidence is the only hope for solving the health problems that afflict the population. In this way, Emergency Medicine seeks to be a timely and practical clinical-therapeutic reference point for emerging regional circumstances, using updated international management guidelines as references and emphasizing evidence-based medicine. We are sure that it will be an invaluable contribution for health professionals.Emergency Medicine, in its two volumes, is a work carried out by teachers, students and medical and related specialists, from the Medicine and Nursing career of the Catholic University of Cuenca, Azogues Campus. In addition, it has the contribution of other medical specialists with extensive professional experience and contributes with 52 chapters that address clinical, surgical, pediatric, and gynecological-obstetric pathologies that require timely management in the emergency room. At the same time, this work addresses topics of current interest such as medicolegal aspects of emergency care, urgent complications in HIV infections, use of antimicrobials in emergencies, dose adjustment in patients with kidney failure; and, a special chapter on SARS-CoV-2: diagnostic-therapeutic management.La salud pública representa uno de los retos más grandes en la sociedad, razón por lo cual es fundamental que se robustezcan los vínculos de cooperación científica entre la academia y la colectividad bajo una premisa común: garantizar la salud de la población. En Ecuador, la salud pública afronta un reto histórico enmarcado en dos aristas: la crisis sanitaria debido a la pandemia por Covid-19 y las carencias del sistema social. Esto conduce a pensar tanto en la trascendencia del problema como en sus posibles soluciones. A pesar de aquello, resulta innegable afirmar que todo el personal sanitario comparte una ideología en común y el mismo compromiso, garantizar la salud de la población. Evidentemente no constituye una tarea fácil debido a la incertidumbre social y a la posible aparición de nuevas enfermedades; sin embargo, se basa en un denominador común: asentar las decisiones en la evidencia científica disponible o lo que se conoce como medicina basada en la evidencia. La generación de nuevo conocimiento y la utilización de la mejor evidencia científica disponible constituye la única esperanza para resolver los problemas de salud que aquejan a la población. De esta forma, Medicina de Urgencias busca ser un referente clínico- terapéutico, oportuno y práctico, de las circunstancias emergentes regionales, tomando como referencias guías de manejo internacionales actualizadas y haciendo hincapié en la medicina basada en la evidencia. Estamos seguros que será un aporte de carácter invaluable para los profesionales de la salud. Medicina de urgencias, en sus dos volúmenes, es una obra realizada por docentes, estudiantes y especialistas médicos y afines, de la carrera de Medicina y Enfermería de la Universidad Católica de Cuenca, Sede Azogues. Además, cuenta con el aporte de otros médicos especialistas con amplia trayectoria profesional y aporta con 52 capítulos que abordan patologías clínicas, quirúrgicas, pediátricas, y gíneco-obstétricas, que requieren manejo oportuno en la sala de emergencias. &nbsp;Al mismo tiempo, la presente obra aborda temáticas de interés actual como aspectos médico legales de la atención en urgencias, complicaciones urgentes en las infecciones por VIH, uso de antimicrobianos en emergencias, ajuste de dosis en pacientes con insuficiencia renal; y, un capítulo especial sobre el SARS-CoV-2: manejo diagnóstico-terapéutico

Medicina de Urgencias Tomo 1

Public health represents one of the greatest challenges in society, which is why it is essential to strengthen the links of scientific cooperation between the academy and the community under a common premise: guarantee the health of the population. In Ecuador, public health faces a historical challenge framed by two edges: the health crisis due to the Covid-19 pandemic and the shortcomings of the social system. This leads to thinking about both the importance of the problem and its possible solutions. Despite this, it is undeniable to affirm that all health personnel share a common ideology and the same commitment, guaranteeing the health of the population.Obviously it is not an easy task due to social uncertainty and the possible appearance of new diseases; however, it is based on a common denominator: basing decisions on the available scientific evidence or what is known as evidence-based medicine. The generation of new knowledge and the use of the best available scientific evidence is the only hope for solving the health problems that afflict the population. In this way, Emergency Medicine seeks to be a timely and practical clinical-therapeutic reference point for emerging regional circumstances, using updated international management guidelines as references and emphasizing evidence-based medicine. We are sure that it will be an invaluable contribution for health professionals.Emergency Medicine, in its two volumes, is a work carried out by teachers, students and medical and related specialists, from the Medicine and Nursing career of the Catholic University of Cuenca, Azogues Campus. In addition, it has the contribution of other medical specialists with extensive professional experience and contributes with 52 chapters that address clinical, surgical, pediatric, and gynecological-obstetric pathologies that require timely management in the emergency room. At the same time, this work addresses topics of current interest such as medicolegal aspects of emergency care, urgent complications in HIV infections, use of antimicrobials in emergencies, dose adjustment in patients with kidney failure; and, a special chapter on SARS-CoV-2: diagnostic-therapeutic management.La salud pública representa uno de los retos más grandes en la sociedad, razón por lo cual es fundamental que se robustezcan los vínculos de cooperación científica entre la academia y la colectividad bajo una premisa común: garantizar la salud de la población. En Ecuador, la salud pública afronta un reto histórico enmarcado en dos aristas: la crisis sanitaria debido a la pandemia por Covid-19 y las carencias del sistema social. Esto conduce a pensar tanto en la trascendencia del problema como en sus posibles soluciones. A pesar de aquello, resulta innegable afirmar que todo el personal sanitario comparte una ideología en común y el mismo compromiso, garantizar la salud de la población. Evidentemente no constituye una tarea fácil debido a la incertidumbre social y a la posible aparición de nuevas enfermedades; sin embargo, se basa en un denominador común: asentar las decisiones en la evidencia científica disponible o lo que se conoce como medicina basada en la evidencia. La generación de nuevo conocimiento y la utilización de la mejor evidencia científica disponible constituye la única esperanza para resolver los problemas de salud que aquejan a la población. De esta forma, Medicina de Urgencias busca ser un referente clínico- terapéutico, oportuno y práctico, de las circunstancias emergentes regionales, tomando como referencias guías de manejo internacionales actualizadas y haciendo hincapié en la medicina basada en la evidencia. Estamos seguros que será un aporte de carácter invaluable para los profesionales de la salud. Medicina de urgencias, en sus dos volúmenes, es una obra realizada por docentes, estudiantes y especialistas médicos y afines, de la carrera de Medicina y Enfermería de la Universidad Católica de Cuenca, Sede Azogues. Además, cuenta con el aporte de otros médicos especialistas con amplia trayectoria profesional y aporta con 52 capítulos que abordan patologías clínicas, quirúrgicas, pediátricas, y gíneco-obstétricas, que requieren manejo oportuno en la sala de emergencias. &nbsp;Al mismo tiempo, la presente obra aborda temáticas de interés actual como aspectos médico legales de la atención en urgencias, complicaciones urgentes en las infecciones por VIH, uso de antimicrobianos en emergencias, ajuste de dosis en pacientes con insuficiencia renal; y, un capítulo especial sobre el SARS-CoV-2: manejo diagnóstico-terapéutico

Medicina de Urgencias Tomo 1

Public health represents one of the greatest challenges in society, which is why it is essential to strengthen the links of scientific cooperation between the academy and the community under a common premise: guarantee the health of the population. In Ecuador, public health faces a historical challenge framed by two edges: the health crisis due to the Covid-19 pandemic and the shortcomings of the social system. This leads to thinking about both the importance of the problem and its possible solutions. Despite this, it is undeniable to affirm that all health personnel share a common ideology and the same commitment, guaranteeing the health of the population.Obviously it is not an easy task due to social uncertainty and the possible appearance of new diseases; however, it is based on a common denominator: basing decisions on the available scientific evidence or what is known as evidence-based medicine. The generation of new knowledge and the use of the best available scientific evidence is the only hope for solving the health problems that afflict the population. In this way, Emergency Medicine seeks to be a timely and practical clinical-therapeutic reference point for emerging regional circumstances, using updated international management guidelines as references and emphasizing evidence-based medicine. We are sure that it will be an invaluable contribution for health professionals.Emergency Medicine, in its two volumes, is a work carried out by teachers, students and medical and related specialists, from the Medicine and Nursing career of the Catholic University of Cuenca, Azogues Campus. In addition, it has the contribution of other medical specialists with extensive professional experience and contributes with 52 chapters that address clinical, surgical, pediatric, and gynecological-obstetric pathologies that require timely management in the emergency room. At the same time, this work addresses topics of current interest such as medicolegal aspects of emergency care, urgent complications in HIV infections, use of antimicrobials in emergencies, dose adjustment in patients with kidney failure; and, a special chapter on SARS-CoV-2: diagnostic-therapeutic management.La salud pública representa uno de los retos más grandes en la sociedad, razón por lo cual es fundamental que se robustezcan los vínculos de cooperación científica entre la academia y la colectividad bajo una premisa común: garantizar la salud de la población. En Ecuador, la salud pública afronta un reto histórico enmarcado en dos aristas: la crisis sanitaria debido a la pandemia por Covid-19 y las carencias del sistema social. Esto conduce a pensar tanto en la trascendencia del problema como en sus posibles soluciones. A pesar de aquello, resulta innegable afirmar que todo el personal sanitario comparte una ideología en común y el mismo compromiso, garantizar la salud de la población. Evidentemente no constituye una tarea fácil debido a la incertidumbre social y a la posible aparición de nuevas enfermedades; sin embargo, se basa en un denominador común: asentar las decisiones en la evidencia científica disponible o lo que se conoce como medicina basada en la evidencia. La generación de nuevo conocimiento y la utilización de la mejor evidencia científica disponible constituye la única esperanza para resolver los problemas de salud que aquejan a la población. De esta forma, Medicina de Urgencias busca ser un referente clínico- terapéutico, oportuno y práctico, de las circunstancias emergentes regionales, tomando como referencias guías de manejo internacionales actualizadas y haciendo hincapié en la medicina basada en la evidencia. Estamos seguros que será un aporte de carácter invaluable para los profesionales de la salud. Medicina de urgencias, en sus dos volúmenes, es una obra realizada por docentes, estudiantes y especialistas médicos y afines, de la carrera de Medicina y Enfermería de la Universidad Católica de Cuenca, Sede Azogues. Además, cuenta con el aporte de otros médicos especialistas con amplia trayectoria profesional y aporta con 52 capítulos que abordan patologías clínicas, quirúrgicas, pediátricas, y gíneco-obstétricas, que requieren manejo oportuno en la sala de emergencias. &nbsp;Al mismo tiempo, la presente obra aborda temáticas de interés actual como aspectos médico legales de la atención en urgencias, complicaciones urgentes en las infecciones por VIH, uso de antimicrobianos en emergencias, ajuste de dosis en pacientes con insuficiencia renal; y, un capítulo especial sobre el SARS-CoV-2: manejo diagnóstico-terapéutico