Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

Introducción: La determinación del riesgo cardiovascular global mediante tablas es la mejor herramienta para establecer políticas más eficientes de prevención de las enfermedades cardiovasculares. Objetivo: Determinar, mediante una revisión sistemática, los estudios realizados en la población cubana para evaluar el riesgo cardiovascular global, con las tablas de predicción de riesgo de la Organización Mundial de la Salud.Métodos: Se realizó un estudio cualitativo observacional, consistente en una revisión sistemática. Se siguieron las directrices de la declaración PRISMA. Los términos de búsqueda consultadas fueron “riesgo cardiovascular global” y “población cubana”. Se combinaron los términos utilizando los operadores booleanos (AND, OR). La búsqueda se estableció en el período comprendido entre marzo y septiembre de 2021 y se utilizaron las bases de datos PubMed, Scopus, SciELO, Google académico, Latindex, y Web of Science.Resultados: Los autores cubanos han publicado 51 artículos sobre riesgo cardiovascular global en las revistas científicas especializadas. De ellos, 41 son artículos originales y de 18 artículos elegibles, se eliminaron cinco que no utilizaron correctamente las tablas. Se seleccionaron 13 artículos que corresponden al 25,49 % de los publicados. De estos, en nueve predominó el nivel de RCG bajo, lo que representa un 69,23 %. La media del nivel de RCG bajo es de 63,65 % con una desviación estándar de 25,04.Conclusiones: Existen pocos estudios publicados sobre riesgo cardiovascular global en Cuba. Se encontró un predominio del riesgo cardiovascular global bajo. Las tablas de la Organización Mundial de la Salud pueden subestimar las categorías de mayor riesgo.

The present work aimed to evaluate the insecticidal activity of Cymbopogon citratus essential oil and its major compounds (citral and myrcene) on Anticarsia gemmatalis. The essential oil, citral, myrcene, and a mixture of citral and myrcene were tested at the concentrations of 0.1, 0.3, 0.5, 0.7, and 0.9 % v/v, plus two negative controls (distilled water and Tween-80® 0.5 % v/v) and a positive control (novaluron 0.075 % w/v). Insect mortality was evaluated in 24, 48, 72, and 96 h. According to the results, C. citratus essential oil and the citral-myrcene mixture at 0.9 % v/v were effective in the control of A. gemmatalis, with 96 % and 88 % mortality, respectively, in the first 24 h. At this concentration, citral caused 100 % mortality after 72 h, whereas myrcene had no effect on the caterpillars even after 96 h of exposure. Thus, C. citratus essential oil can be a potential option for the alternative control of A. gemmatalis.

Viticulture in Rio Grande do Sul (RS), the southernmost state of Brazil, has been changing due to its expansion to new areas in the Campanha Region. Located in the south of the state, these areas have different edaphoclimatic conditions from those existing in the Serra Gaúcha, traditional production region. Thus, the estimation of reference values for leaf nutrient contents specific for the conditions of the Campanha is essential for the correct management of vineyards. Methods such as Mathematical Chance (MCh) enable the determination of sufficiency levels of leaf nutrients by evaluating commercial production areas. This work aimed to estimate reference values for nutrients in leaf tissue of grapevines in the region of Campanha by using the MCh method. Nutritional sufficiency ranges differed from those estimated by the official research for the state. However, they revealed high similarity with the results obtained by other studies carried out in the Campanha Region by using DRIS and CND approaches. Our results demonstrated that the MCh was able to estimate the infra- and supra-optimal limits, as well as the optimal levels for nutrients, indicating that there is potential for foliar diagnosis of vineyards in RS to be performed based on regionalized parameters.

The objective of this paper was to evaluate productivity, nutritional value of forage and tillering of elephant grass cv. BRS Kurumi under different pre-defoliation and post-defoliation canopy heights (residual height). The experimental design consisted in a randomized complete block design, with four replications. Treatments corresponded to the factorial combination of two pre‐defoliation heights (60 and 80 cm) and three post-defoliation residue heights (10, 25 and 40 cm), combined in factorial design 2 x 3, being, respectively, 60 x 10 cm; 60 x 25 cm; 60 x 40 cm; 80 x 10 cm; 80 x 25 cm; 80 x 40 cm. Productive, bromatological, carbohydrate fractionation and in situ degradability characteristics were evaluated. Results indicated that if the objective is to seek short intervals between grazing, associated with higher forage quality, the 60 x 25, 60 x 40 and 80 x 40 managements are the most indicated ones. For maximum forage productivity, 80 x 10 and 80 x 25 are the most recommended ones. For tillering, a canopy height management of 80 cm is preferred, with 80 x 25 for aerial tillers and 80 x 40 for basal tillers.

The aim of this study was to develop a technological tool in the form of a mobile application that provides functionalities for the easy calculation of reproductive and productive efficiency indices. This tool aims to assist breeders, technicians, and students of agricultural sciences in decision-making for the challenges faced in cattle production systems. The application was developed using the Android Studio development environment and the Dart programming language framework known as Flutter. The application's graphical interface follows Google guidelines in the Material Design documentation. The tool will provide a practical way to calculate recognized indexes of productive efficiency of cow-calf systems and provide information such as goals and management tips to help users achieve better results. The impact of the developed product is its use as an information platform, facilitating decision-making in the area of beef cattle production and as an efficient means of disseminating technologies generated by research institutions and popularizing science. Thus, the application is an accessible and comprehensible tool, providing a means of evaluating the technologies and management practices adopted in beef cattle farms.

Thermal comfort is one of the main factors that influence the productivity of dairy cattle. The temperature-humidity index (THI) is one of the most used indicators to evaluate thermal comfort levels. This work aimed to evaluate the levels of thermal comfort for bovine dairy production in Rio Grande do Sul state through the THI calculation and its impact on milk production, considering daily yields of 15 kg and 30 kg per cow. The THI values and decrease in milk yield were calculated using data between 1990 and 2021 from the National Institute of Meteorology (INMET). The observed results considering the average temperatures showed that conditions of thermal discomfort occur only in summer, intensifying in January. Milk production was most affected in the western border region of the state, corresponding in parts to the physiographic regions of Alto Uruguai, Missões, and Campanha, which have a warmer climate. The climate classification proposed by Maluf had the best spatial correspondence with the ITU. This classification may be used in the evaluation of places with greater suitability for dairy farming in the state and to indicate places where it is necessary to implement action to mitigate the effects of thermal discomfort in dairy cattle.

Nas últimas décadas, a população de pessoas transexuais, também conhecida como população T, vem aumentando a cada dia, tornando sua existência visível e criando novas demandas para os profissionais de saúde, incluindo maternidade e/ou paternidade biológica. Sem pretender esgotar o tema, este artigo visa refletir sobre a gravidez de pessoas transmasculinas, questionando se esse fenômeno é paradoxal ou a reinvenção da masculinidade. Para refletir sobre essa questão, os autores partem de uma discussão sobre o corpo como construção social colocando, em sequência, a masculinidade em foco para demonstrar o fenômeno da gravidez transmasculina.Concluímos que a gravidez de homens transexuais é a possibilidade de realização de um desejo pessoal de constituir família e que eles próprios possuem a capacidade biológica ou o direito de gestar, mesmo que isso deslegitime sua identidade, uma vez que não deixam de ser homens porque são Ao contrário, é importante apostar nas múltiplas possibilidades que a diversidade humana encerra. Ao final, sugerimos que reflexões sobre a gravidez de pessoas transmasculinas são importantes para combater o preconceito e a discriminação, contribuindo para mudanças estruturais na construção social em torno da masculinidade, da feminilidade e da própria ideia de concepção. Palavras-chave : Masculinidade; homens trans; gravidez.

This review takes a journey through Queer feminism is for everyone by Gracia Trujillo (Catarata, 2022). The book highlights, from a sociological approach and from situated knowledge, how different transfeminist theories and activism for social transformation come together to raise questions about the norms that position some ways of being, feeling, and doing above others in the social hierarchy. It includes different perspectives, beyond binary norms, and a comprehensive literature review on feminist movements in recent years on issues related to sexuality, identities, gender, desires and bodily experiences, among others.  

Chemsex has been treated with much sensationalism from the public opinion and in a very biased way in the academy. This work is a post-structuralist theoretical-methodological proposal to unravel the cultural origin of these pathologizing value judgments. As well as the application of queer methodologies so that chemsex users can self-represent themselves in social research. It presents the state of the question and an analysis of how the different approaches carried out so far represent chemsex users. It then delves into the Western cultural framework from which chemsex is treated in science. Next, chemsex is contextualized in the current era —the pharmacopornographic era—. After that, the liberating potential of chemsex in terms of intimacy and sexuality is explored. Thus appreciating non-negative aspects of chemsex. Finally, queer methodologies are introduced and how they can be applied in this field. This proposal tries to move the debate from the risk paradigm to the pleasure paradigm, thus constructing chemsex from a non-stigmatizing perspective that is reliable to the discourses of chemsex users.