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1.
Phys Rev Lett ; 133(2): 021603, 2024 Jul 12.
Artigo em Inglês | MEDLINE | ID: mdl-39073968

RESUMO

In theories with conserved dipole moment, isolated charged particles (fractons) are immobile, but dipoles can move. We couple these dipoles to the fracton gauge theory and analyze the universal infrared structure. This uncovers an observable double kick memory effect which we relate to a novel dipole soft theorem. Together with their asymptotic symmetries this constitutes the first realization of an infrared triangle beyond Lorentz symmetry. This demonstrates the robustness of these IR structures and paves the way for their investigation in condensed matter systems and beyond.

2.
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1551010

RESUMO

¿Cómo formar con pertinencia y calidad al estudiante de Medicina en el contexto contemporáneo, de modo que posea las herramientas y competencias para aprender por sí y mejorar su desempeño profesional durante su vida? El objetivo de este artículo es valorar la significación de la gestión del conocimiento en la formación de los estudiantes de Medicina. Se exponen ideas básicas para propiciar el debate y la reflexión relacionados con las funciones sustantivas de la universidad, que, a su vez, son vistas como escenarios de formación. Se sistematiza un resultado parcial de carácter teórico de una investigación en curso acerca de la gestión del conocimiento en la formación de los estudiantes de la carrera Medicina Humana, de la Universidad Técnica de Manabí, en la República del Ecuador.


How to train medical students with relevance and quality in the contemporary context so that they have the tools and skills to learn for themselves and improve their professional performance throughout life? The aim of this article is to assess the significance of knowledge management in the training of contemporary medical students. Basic ideas are presented to encourage debate and reflection related to the substantive functions of the university which, in turn, are seen as training scenarios. Authors systematize a partial theoretical result of an ongoing investigation about knowledge management in the training of students of the Human Medicine studies at the Technical University of Manabí, Republic of Ecuador.

4.
Insects ; 14(4)2023 Mar 26.
Artigo em Inglês | MEDLINE | ID: mdl-37103132

RESUMO

Sexual selection determines the evolution of the species by favoring some attributes that confer a reproductive advantage to those individuals with those attributes. Tephritidae flies do not always select the same traits when looking for a mating partner. Some aspects of the mating system of Anastrepha curvicauda are known; nevertheless, there is no information on the effect of age, size, and virginity when selecting a mating partner. We set up a series of experiments where a selector (male or female) may select between (a) an old or young partner, (b) a small or large partner, and (c) a virgin or mated partner. Males of A. curvicauda significantly preferred large, young, and virgin females, while females showed no preference for high- or low-quality males. The females' non-preference for a particular male is discussed in the light of their mating system.

5.
Humanidad. med ; 23(1)abr. 2023.
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1440200

RESUMO

Se realizó un estudio observacional, descriptivo y transversal en colaboración entre profesionales cubanos y venezolanos involucrados en la dirección del proceso de formación de la carrera Medicina Integral Comunitaria en la Universidad de Ciencias de la Salud Hugo Rafael Chávez, con el propósito de valorar el impacto de la actividad comunitaria en la formación de los estudiantes de Medicina Integral Comunitaria en el enfrentamiento a la COVID-19 en el Estado Falcón, en el período de febrero a septiembre de 2020. El universo lo representa 508 estudiantes de la carrera y la muestra estuvo conformada por 244 que se incorporaron en las actividades comunitaria en el enfrentamiento a la COVID-19. Se utilizó la observación participativa e informes diarios de actividad de pesquisa, la revisión documental, encuesta y técnicas de estadística descriptiva. Se emplearon medidas resúmenes como media, porcentaje que permitieron la búsqueda y procesamiento de la información. Los principales resultados fueron la transformación del personal pedagógico en los diferentes niveles de dirección y la organización del sistema de influencia en los estudiantes, la introducción de un nuevo estilo de trabajo en función de elevar la calidad del proceso docente educativo a partir de la educación a distancia, la integración de los estudiantes a las actividades comunitarias en la contingencia y su impacto en la formación integral de los futuros profesionales de la salud, así como la solución de los problemas de salud de las comunidades del territorio.


An observational, descriptive and cross-sectional study was carried out in collaboration between Cuban and Venezuelan professionals involved in the direction of the training process of the Comprehensive Community Medicine career at the Hugo Rafael Chávez University of Health Sciences, with the purpose of assessing the impact of the community activity in the comprehensive training of Comprehensive Community Medicine students in the confrontation with COVID-19 in Falcón State, from February to September 2020. The universe is represented by 508 students from the Comprehensive Community Medicine career and The sample consisted of 244 students who joined community activities in the fight against COVID-19. Participatory observation and daily reports of research activity, documentary review, survey and descriptive statistical techniques were used using summary measures such as average, percentage, which allowed the search remains and information processing, the main results obtained were the transformation of the pedagogical personnel at the different levels of management and the organization of the system of influence on the students, the introduction of a new style of work in order to raise the quality of the process educational teacher from distance education, the integration of students into community activities in the contingency and its impact on the comprehensive training of future health professionals and the solution of health problems in the communities of the territory.

6.
Rev. cuba. ortop. traumatol ; 36(3)sept. 2022. ilus, tab
Artigo em Espanhol | LILACS, CUMED | ID: biblio-1441774

RESUMO

Introducción: La descontaminación preoperatoria de la piel es parte de la práctica quirúrgica estándar. La infección del sitio quirúrgico implica un gasto adicional a los sistemas de salud y un incremento en la morbilidad y mortalidad de los pacientes sometidos a cirugía. El iodo povidona es un desinfectante muy utilizado para eliminar la carga bacteriana cutánea. Objetivo: Constatar si el iodo povidona es mejor que otros desinfectantes cutáneos en la reducción de las infecciones del sitio quirúrgico. Métodos: Se realizó una búsqueda en Google Académico, PubMed y Embase utilizando los términos Mesh; iodo povidona, infección del sitio quirúrgico, cirugía, antisépticos locales, unidos por el operador booleano AND y los filtros Adultos, desde 2015, y ensayos clínicos controlados. Se aplicó la escala de Jadad para riesgo de sesgos y el Consort 2010 y la lista de chequeo PRISMA para determinar la calidad del estudio. El riesgo relativo fue la medida de efecto para un IC95 y un error de 0,05. Se incluyeron 8 ensayos clínicos controlados, n= 4800 casos, con la distribución de eventos en los grupos experimental 140/2402 y control 141/2398, para una diferencia no significativa p=0,444. La heterogeneidad fue I2=62,57 por ciento. Conclusiones: No existieron diferencias entre el iodo povidona y el resto de los desinfectantes para disminuir el porcentaje de infecciones del sitio quirúrgico en este estudio(AU)


Introduction: Preoperative skin decontamination is part of standard surgical practice. Surgical site infection implies an additional cost to health systems and an increase in morbidity and mortality of patients undergoing surgery. Povidone iodine is a widely used disinfectant to eliminate the bacterial load on the skin. Objective: To verify if povidone iodine is better than other skin disinfectants in reducing surgical site infections. Methods: A search of articles and controlled clinical trials published since 2015 was carried out in Google Scholar, PubMed and Embase and using terms of the Mesh such as povidone iodine, surgical site infection, surgery, local antiseptics, joined by the Boolean operator AND in addition to Adult filters. The Jadad scale for risk of bias and Consort 2010 and PRISMA checklist were applied to determine the quality of the study. Relative risk was the measure of effect for CI95 and an error of 0.05. Eight controlled clinical trials were included, n= 4800 cases, with the distribution of events in the experimental groups 140/2402 and control 141/2398, for a non-significant difference p=0.444. Heterogeneity was I2=62.57 percent. Conclusions: There were no differences between povidone iodine and the rest of the disinfectants to reduce the percentage of surgical site infections in this study(AU)


Assuntos
Humanos , Povidona-Iodo/administração & dosagem , Pele , Desinfetantes/administração & dosagem , Metanálise
7.
Insects ; 13(7)2022 Jul 16.
Artigo em Inglês | MEDLINE | ID: mdl-35886814

RESUMO

The Order Coleoptera provides good examples of morphological specializations in the reproductive apparatus, gonadic maturation, and allometry differing between the sexes. The female and male reproductive apparatus has been modified to ensure reproduction between individuals of the same species. The genus Cyclocephala has more than 500 species distributed in America, and Cyclocephala barrerai Martínez is an economically important species in the central part of Mexico. The objective of this work was to study the reproductive system, gonadic maturation, and allometry of C. barrerai. We used light, scanning electron, and laser scanning confocal microscopy to describe the reproductive apparatus and gonadic maturation of females and males. The relationship between adult weight and different parts of the body was established by linear regression. Regardless, the reproductive apparatuses of C. barrerai are like those of other Melolonthidae: the genital chamber, the type II accessory glands, and the ventral plaques of the female and the ejaculator bulb and genital capsule of the males are specific to C. barrerai. The gonads are fully developed when 18 d old. The weight of adult C. barrerai has a positive linear relationship with distinct parts of its body, while the antennae of males are larger than those of the females.

8.
Microorganisms ; 10(3)2022 Feb 22.
Artigo em Inglês | MEDLINE | ID: mdl-35336062

RESUMO

Bacteria of the genera Xenorhabdus and Photorhabdus are symbionts of entomopathogenic nematodes. Despite their close phylogenetic relationship, they show differences in their pathogenicity and virulence mechanisms in target insects. These differences were explored by the analysis of the pangenome, as it provides a framework for characterizing and defining the gene repertoire. We performed the first pangenome analysis of 91 strains of Xenorhabdus and Photorhabdus; the analysis showed that the Photorhabdus genus has a higher number of genes associated with pathogenicity. However, biological tests showed that whole cells of X. nematophila SC 0516 were more virulent than those of P. luminescens HIM3 when both were injected into G. mellonella larvae. In addition, we cloned and expressed the GroEL proteins of both bacteria, as this protein has been previously indicated to show insecticidal activity in the genus Xenorhabdus. Among these proteins, Cpn60-Xn was found to be the most toxic at all concentrations tested, with an LC50 value of 102.34 ng/larva. Sequence analysis suggested that the Cpn60-Xn toxin was homologous to Cpn60-Pl; however, Cpn60-Xn contained thirty-five differentially substituted amino acid residues that could be responsible for its insecticidal activity.

9.
Rev. cuba. cir ; 61(1)mar. 2022.
Artigo em Espanhol | LILACS, CUMED | ID: biblio-1408223

RESUMO

Introducción: La fisura anal crónica es una entidad frecuente que produce molestias durante y después de la defecación, su fisiopatología no es clara y su manejo es variado. La esfinterotomia lateral interna es una de las técnicas más utilizadas, aunque su elevado porcentaje de incontinencia no es aceptado y la inyección de toxina botulínica es una alternativa tentadora. Objetivo: Comparar los resultados de la inyección de toxina botulínica tipo A con la esfinterotomia lateral interna para tratamiento de la fisura anal en cuanto a dolor postoperatorio, recurrencia, curabilidad e incontinencia. Métodos: Se realizó un estudio tipo cohorte. A un grupo de 40 pacientes se trató con inyección de 50 UI de Toxina Botulínica tipo A y el otro grupo de 42 pacientes se le realizó esfinterotomia lateral interna. Los resultados se comparan estadísticamente para CI95 y error de 0,05. Resultados: La esfinterotomia vs toxina botulínica, resultó en cuanto a curabilidad en un 85,4 por ciento de los casos contra un 77,5 por ciento. Las recidivas se presentaron en 4,8 por ciento / 12,5 por ciento, la incontinencia ocurrió en 9,5 por ciento / 2,5 por ciento y el dolor posoperatorio estuvo presente en el 14,8 por ciento / 5,0 por ciento. Conclusiones: La esfinterotomia resultó mejor en cuanto a curabilidad y recidivas, mientras la aplicación de la toxina botulínica presentó mejores resultados en la incontinencia fecal y el dolor posoperatorio(AU)


Introduction: Chronic anal fissure is a frequent entity that produces discomfort during and after defecation. Its pathophysiology is not clear and its management is varied. Lateral internal sphincterotomy is one of the most used techniques, although its high percentage of incontinence is not accepted; botulinum toxin injection is therefore a tempting alternative. Objective: To compare the results of botulinum toxin type A injection or lateral internal sphincterotomy for treatment of anal fissure in terms of postoperative pain, recurrence, healing and incontinence. Methods: A cohort study was carried out. One group of 40 patients were treated with injection of 50 IU of botulinum toxin type A and another group of 42 patients underwent lateral internal sphincterotomy. The results were statistically compared with a confidence interval of 95 percent and error of 0.05. Results: Sphincterotomy and botulinum toxin were effective in terms of healing in 85.4 percent and 77.5 percent of cases, respectively. Recurrences occurred in 4.8 percent and 12.5 percent of cases, respectively. Incontinence occurred in 9.5 percent and 2.5 percent of cases, respectively. Postoperative pain was present in 14.8 percent and 5.0 percent of cases, respectively. Conclusions: Sphincterotomy was better in terms of healing and recurrence, while botulinum toxin application showed better results regarding fecal incontinence and postoperative pain(AU)


Assuntos
Humanos , Dor Pós-Operatória , Toxinas Botulínicas Tipo A/uso terapêutico , Fissura Anal/etiologia , Esfincterotomia Lateral Interna/métodos , Estudos de Coortes
10.
Humanidad. med ; 21(3)dic. 2021.
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1405054

RESUMO

RESUMEN El presente estudio tiene un carácter descriptivo explicativo causal y es el resultado de la colaboración entre profesionales cubanos y venezolanos involucrados en la dirección del proceso de formación de la carrera Medicina Integral Comunitaria en la Universidad de Ciencias de la Salud Hugo Rafael Chávez Frías, del estado de Falcón. Dirigido a caracterizar los estilos de aprendizaje de los estudiantes de primer año, teniendo en cuenta el modo en que en ello repercuten la edad y el sexo. Se desarrolló durante el curso 2020. La muestra seleccionada estuvo constituida por 126 estudiantes de una población de 244. El instrumento diagnóstico utilizado fue el cuestionario del modelo de Kolb. Aunque existe diversidad de estilos de aprendizajes, se evidenció el predominio del estilo reflexivo en ambos sexos; sin embargo, en el caso del sexo masculino también predomina el pragmático junto al reflexivo.


ABSTRACT The present study has a causal explanatory descriptive character and is the result of the collaboration between Cuban and Venezuelan professionals involved in the direction of the training process of the Comprehensive Community Medicine career at the University of Health Sciences Hugo Rafael Chávez Frías, of the state of Falcón. Aimed at characterizing the learning styles of first-year students, taking into account the way in which age and gender affect the learning styles. The study was developed during the 2020 academic year. The selected sample consisted of 126 students from a population of 244. The diagnostic instrument used was the Kolb model questionnaire. Although there is a diversity of learning styles, the predominance of the reflective style was evidenced in both sexes; however, in the case of the male sex, the pragmatic style also predominates along with the reflective one.

11.
Insects ; 12(4)2021 Mar 29.
Artigo em Inglês | MEDLINE | ID: mdl-33805400

RESUMO

Chemical control is the main method used to combat fall armyworm in maize crops. However, its indiscriminate use usually leads to a more complex scenario characterized by loss of its effectiveness due to the development of resistance of the insect pest, emergence of secondary pests, and reduction of the populations of natural enemies. For this reason, efforts to develop strategies for agroecological pest management such as Push-Pull are increasingly growing. In this context, the present study was carried out to evaluate field effectiveness of Push-Pull systems for S. frugiperda management in maize crops in Morelos, Mexico. In a randomized block experiment, the incidence and severity of S. frugiperda, the development and yield of maize were evaluated in nine Push-Pull systems and a maize monoculture. The Push-Pull systems presented incidence/severity values lower than those of the monoculture. Morphological development and maize yield in the latter were lower than those of most Push-Pull systems. Mombasa-D. ambrosioides, Mulato II-T. erecta, Mulato II-C. juncea, Tanzania-T. erecta and Tanzania-D. ambrosioides systems presented higher yields than those of monocultures.

12.
Sci Rep ; 11(1): 6311, 2021 03 18.
Artigo em Inglês | MEDLINE | ID: mdl-33737687

RESUMO

Males of the papaya fruit fly, Anastrepha curvicauda Gerstaecker (former Toxotrypana curvicauda), defend a papaya fruit from rivals and males release their sex pheromone to attract and mate with females and offer them an oviposition site. While some aspects of the biology of A. curvicauda are known, such as its reproductive biology, its sex pheromone, and host selection, there is currently no information on the species mate selection process. This paper describes the precopulatory mating behavior of A. curvicauda and elucidates how intrasexual selection affects the mate selection process. We studied the precopulatory mating behavior of dominant and subordinate males and ethograms were devised. The effect of hierarchy was studied in non-choice and choice experiments. Male's repertoire includes 15 behavioral elements, 12 precopulatory, one mating, and two postcopulatory (tandem and encounter). In non-choice experiments, dominant and subordinate males were accepted by females, but when females had the opportunity to choose among males, dominant males were significantly preferred over subordinate ones. The presence of a rival male modified the courting behavior of males and agonistic behavior among males was observed before and during mating.


Assuntos
Preferência de Acasalamento Animal/fisiologia , Reprodução/genética , Atrativos Sexuais/genética , Tephritidae/genética , Comportamento Agonístico/fisiologia , Animais , Carica/parasitologia , Reprodução/fisiologia , Comportamento Sexual Animal/fisiologia , Tephritidae/fisiologia
13.
Insects ; 11(6)2020 Jun 04.
Artigo em Inglês | MEDLINE | ID: mdl-32512789

RESUMO

Regulations imposed on the use of chemical insecticides call for the development of environmental-friendly pest management strategies. One of the most effective strategies is the push-pull system, which takes advantage of the behavioral response of the insect to the integration of repellent stimuli; it expels the pest out of the main crop (push), while attracting stimuli (attractants) pull the pest to an alternative crop or trap (pull). The objective of this study was to design a push-pull system to control Spodoptera frugiperda in maize crops (Zea mays) in Morelos, Mexico. Data on reproductive potential, larvae development, food consumption and olfactometry were used to obtain a Trap Plant Selection Index (TRAPS) based on Principal Component Analysis. This TRAPS was used to select the most suitable plants. The degree of repellency of potential plants to be used as the trap crop was studied with four-way olfactometers. S. frugiperda females oviposited more eggs on Brachiaria hybrid cv. Mulato II, Panicum maximum cv. Mombasa and Panicum maximum cv. Tanzania than on Z. mays, regardless of the fact that these plants delayed the development of their offspring. Dysphania ambrosioides, Tagetes erecta and Crotalaria juncea were less attractive to S. frugiperda females. Therefore, the former plants could be used as crop traps, and the latter as intercropped repellent plants in a push-pull system.

14.
Insects ; 10(3)2019 Mar 26.
Artigo em Inglês | MEDLINE | ID: mdl-30917525

RESUMO

The entomopathogenic nematodes Heterorhabditis are parasites of insects and are associated with mutualist symbiosis enterobacteria of the genus Photorhabdus; these bacteria are lethal to their host insects. Heterorhabditis indica MOR03 was isolated from sugarcane soil in Morelos state, Mexico. The molecular identification of the nematode was confirmed using sequences of the ITS1-5.8S-ITS2 region and the D2/D3 expansion segment of the 28S rRNA gene. In addition, two bacteria HIM3 and NA04 strains were isolated from the entomopathogenic nematode. The genomes of both bacteria were sequenced and assembled de novo. Phylogenetic analysis was confirmed by concatenated gene sequence datasets as Photorhabdus luminescens HIM3 (16S rRNA, 23S rRNA, dnaN, gyrA, and gyrB genes) and Pseudomonas aeruginosa NA04 (16S rRNA, 23S rRNA and gyrB genes). H. indica MOR03 infects Galleria mellonella, Tenebrio molitor, Heliothis subflexa, and Diatraea magnifactella larvae with LC50 values of 1.4, 23.5, 13.7, and 21.7 IJs/cm², respectively, at 48 h. These bacteria are pathogenic to various insects and have high injectable insecticide activity at 24 h.

15.
Insects ; 9(3)2018 Jul 26.
Artigo em Inglês | MEDLINE | ID: mdl-30049945

RESUMO

The leaf-footed bug Leptoglossus zonatus (Dallas) (Heteroptera: Coreidae) is an important pest in the Americas. However, no preference of colors, sexual behavior nor aggregation pheromone has been reported, which can be used for detection, monitoring, and control purposes. In the laboratory we tested the attractiveness of white, violet, blue, green, yellow, and orange color to nymphs and adults (mated and unmated) and found that most adults and nymphs were attracted to and remained longer on blue and green colored cards than the other colors tested. We found that couples may remain in copula ≈185 min and mate ≈20 times in a 60 d period with a similar number of matings during the scotophase and the photophase. Sexual behavior consists of six patterns: grooming, abdomen movement, antenna movement, antennation, mounting, and mating. In a Y-tube olfactometer, 80 and 62.5% of the adults tested were attracted to a hexane-extract of the volatiles released by 40 males and 40 females, respectively. This is the first report of the biological evidence of an aggregation pheromone in this bug.

16.
Neotrop. ichthyol ; 16(1): [e160140], mar. 2018. tab, graf
Artigo em Inglês | VETINDEX | ID: vti-18873

RESUMO

The tiger shovelnose catfish (Pseudoplatystoma metaense) identified in literature prior to 2007 as P. tigrinum is the most important catfish species in the Orinoco River fishery, because of its abundance and high market price. The aim of this study was to obtain age, growth and population parameters of the of tiger shovelnose catfish. A total of 2,183 catfish, were sampled during 1996-2003 from the commercial fishery of the northwestern Orinoco River Basin in Venezuela, and were aged by examination of otoliths. Validation of otolith annuli was achieved with marginal increment analysis. Results suggest that, the opaque and translucent zones of otoliths were formed once per year. Length-weight relation and the von Bertalanffy growth model parameters were used to evaluate growth and other population parameters. A strong link between the annual flood pulse and opaque zone formation was confirmed in tiger shovelnose catfish. The total mortality (Z) and natural mortality (M) were estimated. Based in the reference points for optimal and limit fishing mortality rates (F opt and F limit ) this species is exploited above optimum levels. We thus recommend a closed fishing season during their seasonal reproduction, and establishment of a system of fish refuges to help sustain the population.(AU)


O bagre capararí (Pseudoplatystoma metaense) identificado na literatura antes de 2007 como P. tigrinum é uma das espécies de bagres mais importantes da pesca no noroeste do rio Orinoco, por sua abundância e alto preço de comercialização no mercado. O objetivo deste estudo foi obter parâmetros populacionais sobre a idade e crescimento do bagre capararí. Um total de 2.183 exemplares de P. metaense foram examinados desde 1996 até 2003, coletados da frota comercial artesanal do rio Apure na Venezuela. A idade foi determinada pela examinação dos otólitos. A validação da idade foi estimada com a análise de incremento marginal. As zonas opacas e translúcidas dos otólitos foram formada anualmente. A relação comprimento-peso e a equação de von Bertalanffy foram usadas para avaliar o crescimento e outros parâmetros populacionais. Uma forte relação entre o pulso anual de inundação e a formação de zonas opacas foi confirmada em P. metaense. A mortalidade total (Z) e a mortalidade natural (M) foram estimadas. Portanto, baseado nos pontos de referência biológicos (F opt e F lim ) esta espécie encontra-se sobreexplotada acima do nível ótimo. Recomenda-se que o período de defeso deva ser sincronizado com o período de reprodução da espécie e um sistema de reservas de pesca deveria ser utilizado para ajudar a sustentabilidade da população.(AU)


Assuntos
Animais , Peixes-Gato/classificação , Peixes-Gato/crescimento & desenvolvimento , Membrana dos Otólitos/fisiologia
17.
Neotrop. ichthyol ; 16(1): e160140, 2018. tab, graf
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-895122

RESUMO

The tiger shovelnose catfish (Pseudoplatystoma metaense) identified in literature prior to 2007 as P. tigrinum is the most important catfish species in the Orinoco River fishery, because of its abundance and high market price. The aim of this study was to obtain age, growth and population parameters of the of tiger shovelnose catfish. A total of 2,183 catfish, were sampled during 1996-2003 from the commercial fishery of the northwestern Orinoco River Basin in Venezuela, and were aged by examination of otoliths. Validation of otolith annuli was achieved with marginal increment analysis. Results suggest that, the opaque and translucent zones of otoliths were formed once per year. Length-weight relation and the von Bertalanffy growth model parameters were used to evaluate growth and other population parameters. A strong link between the annual flood pulse and opaque zone formation was confirmed in tiger shovelnose catfish. The total mortality (Z) and natural mortality (M) were estimated. Based in the reference points for optimal and limit fishing mortality rates (F opt and F limit ) this species is exploited above optimum levels. We thus recommend a closed fishing season during their seasonal reproduction, and establishment of a system of fish refuges to help sustain the population.(AU)


O bagre capararí (Pseudoplatystoma metaense) identificado na literatura antes de 2007 como P. tigrinum é uma das espécies de bagres mais importantes da pesca no noroeste do rio Orinoco, por sua abundância e alto preço de comercialização no mercado. O objetivo deste estudo foi obter parâmetros populacionais sobre a idade e crescimento do bagre capararí. Um total de 2.183 exemplares de P. metaense foram examinados desde 1996 até 2003, coletados da frota comercial artesanal do rio Apure na Venezuela. A idade foi determinada pela examinação dos otólitos. A validação da idade foi estimada com a análise de incremento marginal. As zonas opacas e translúcidas dos otólitos foram formada anualmente. A relação comprimento-peso e a equação de von Bertalanffy foram usadas para avaliar o crescimento e outros parâmetros populacionais. Uma forte relação entre o pulso anual de inundação e a formação de zonas opacas foi confirmada em P. metaense. A mortalidade total (Z) e a mortalidade natural (M) foram estimadas. Portanto, baseado nos pontos de referência biológicos (F opt e F lim ) esta espécie encontra-se sobreexplotada acima do nível ótimo. Recomenda-se que o período de defeso deva ser sincronizado com o período de reprodução da espécie e um sistema de reservas de pesca deveria ser utilizado para ajudar a sustentabilidade da população.(AU)


Assuntos
Animais , Peixes-Gato/classificação , Peixes-Gato/crescimento & desenvolvimento , Membrana dos Otólitos/fisiologia
18.
Rev. inf. cient ; 97(3): i:626-f:634, 2018.
Artigo em Espanhol | LILACS, CUMED | ID: biblio-1005099

RESUMO

Introducción: la evaluación del proyecto educativo que se lleva a cabo actualmente en la Facultad de Ciencias Médicas de Guantánamo no es la más adecuada. Esto se evidencia en la participación poco activa y asistemática de los dirigentes de la FEU en la elaboración y evaluación del proyecto educativo a partir de indicadores, lo que influye en la calidad del proceso de integralidad de los estudiantes. Objetivo: elaborar un libro electrónico para la evaluación del proyecto educativo del año, que favorezca el perfeccionamiento del proceso de integralidad de los estudiantes de la Facultad de Ciencias Médicas Guantánamo. Método: se realizó un estudio tipo investigación acción en el período octubre de 2015 hasta junio de 2016 con 18 profesores guías y jefes de brigada y la jefa del colectivo de año de dicha facultad, donde se empleó una metodología para el diseño del material electrónico que consta de tres hojas de cálculo, que permite a partir de indicadores diseñados evaluar los resultados del proyecto educativo, además, de permitir determinar los posibles estudiantes integrales y el cumplimiento de los objetivos propuestos en el proyecto. Resultados: se obtuvo como principal resultado la transformación del personal pedagógico favoreciendo un nuevo estilo de trabajo en función de elevarla calidad del proceso y su impacto en la formación integral de los estudiantes. Conclusiones: contribuye a perfeccionar el proceso de integralidad a partir que propicia el empleo de métodos participativos, dinámicos, democráticos, a diferencia de los que se empleaban hasta el momento, con viejos estilos(AU)


Introduction: the evaluation of the educational project that is currently carried out in the Faculty of Medical Sciences of Guantanamo is not the most appropriate. This is evidenced by the active and unsystematic participation of the FEU leaders in the elaboration and evaluation of the educational project based on indicators, which influences the quality of the integrality process of the students. Objective: to prepare an electronic book for the evaluation of the educational project of the year, which favors the improvement of the integrality process of the students of the Faculty of Medical Sciences Guantanamo Method: an action research study was carried out in the period October 2015 to June 2016 with 18 teachers as guides, brigade chiefs and the head of the year collective of this faculty, where a methodology for the design of the electronic material was used. It consists of three spreadsheets, which allows from designed indicators to evaluate the results of the educational project, in addition, to determine the possible integral students and the fulfillment of the objectives proposed in the project. Results: the main result was the transformation of the pedagogical staff favoring a new style of work in order to raise the quality of the process and its impact on the integral formation of the students. Conclusions: it contributes to perfecting the integrality process from which it encourages the use of participatory, dynamic, democratic methods, unlike those used up to now, with old styles(AU)


Assuntos
Bases de Dados como Assunto , Educação Médica/métodos , Avaliação Educacional
19.
An Bras Dermatol ; 92(5 Suppl 1): 121-125, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29267468

RESUMO

Porokeratotic eccrine and hair follicle nevus is a very rare non-hereditary disorder of keratinization with eccrine and hair follicle involvement with only 9 cases described in the literature. In 2009 the term porokeratotic anexial ostial nevus was proposed to comprehend porokeratotic eccrine and hair follicle nevus and a related and more common process without follicular involvement: porokeratotic eccrine ostial and dermal duct nevus Recent findings suggest that both entities may be produced by a mutation in GJB2 gene, which is associated to KID syndrome. Herein we report 2 cases of porokeratotic eccrine and hair follicle nevus and review the existing cases in the Spanish and English literature.


Assuntos
Glândulas Écrinas/patologia , Folículo Piloso/patologia , Hamartoma/patologia , Nevo/patologia , Poroceratose/patologia , Doenças das Glândulas Sudoríparas/patologia , Adulto , Biópsia , Feminino , Doenças do Cabelo/patologia , Humanos , Recém-Nascido , Masculino , Paraceratose/patologia , Doenças Raras
20.
An. bras. dermatol ; An. bras. dermatol;92(5,supl.1): 121-125, 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-887098

RESUMO

Abstract: Porokeratotic eccrine and hair follicle nevus is a very rare non-hereditary disorder of keratinization with eccrine and hair follicle involvement with only 9 cases described in the literature. In 2009 the term porokeratotic anexial ostial nevus was proposed to comprehend porokeratotic eccrine and hair follicle nevus and a related and more common process without follicular involvement: porokeratotic eccrine ostial and dermal duct nevus Recent findings suggest that both entities may be produced by a mutation in GJB2 gene, which is associated to KID syndrome. Herein we report 2 cases of porokeratotic eccrine and hair follicle nevus and review the existing cases in the Spanish and English literature.


Assuntos
Humanos , Masculino , Feminino , Recém-Nascido , Adulto , Doenças das Glândulas Sudoríparas/patologia , Poroceratose/patologia , Folículo Piloso/patologia , Glândulas Écrinas/patologia , Hamartoma/patologia , Nevo/patologia , Paraceratose/patologia , Biópsia , Doenças Raras , Doenças do Cabelo/patologia
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