Estrutura fatorial da escala de suporte social subjetivo: validação em uma mostra de estudantes universitários chilenos

El objetivo de este artículo es adaptar y validar la Escala de Apoyo Social Subjetivo (EASS, de Vaux et al., 1986), a la vez que describir su estructura factorial. Esta escala está compuesta por 10 ítems distribuidos en dos dimensiones: apoyo familiar y apoyo de los amigos. Se examinan las propiedades psicométricas de la escala y la dimensionalidad de la misma en una muestra de estudiantes universitarios chilenos (N = 681). Los resultados indican que el EASS constituye un instrumento fiable (α = .86) y válido para la medición del apoyo social subjetivo. Las dimensiones de la EASS obtienen entre sí una correlación significativa y moderada (r = .41; p < .001). Las cargas factoriales para los ítems en el análisis factorial confirmatorio fluctuaron entre .40 y .93, mostrando buenos índices de ajuste para el modelo de dos factores de primer orden correlacionados (CFI = .97, TLI = .93, RFI = .97, IFI = .97, NFI = .96 y RSMEA = .08).The purpose of this paper is to adapt and validate the Subjective Social Support Scale (Vaux et al, 1986) and to describe its factor structure. The scale consists of 10 items distributed in two dimensions measured in the original instrument: family support and support from friends. The psychometric properties and dimensionality of the scale are examined in a sample of Chilean college students (N = 681). Results show that the scale is a reliable instrument (α = .86) and valid for measuring subjective social support. Its two dimensions show a moderate and significant correlation (r = .41; p < .001). The factor loadings of the items in the confirmatory factor analysis varied between .40 and .93, showing good fit indices for the correlated first order two factor model (CFI = .97, TLI = .93, RFI = .97, IFI = .97, NFI = .96 and RSMEA = .08).O objetivo deste artigo é adaptar e validar a Escala de Apoio Social Subjetivo (EASS, de Vaux et al., 1986), e ao mesmo tempo descrever sua estrutura fatorial. Esta escala está composta por 10 itens distribuídos em duas dimensões: apoio familiar e apoio dos amigos. Examinam-se as propriedades psicométricas da escala e a dimensionalidade da mesma em uma mostra de estudantes universitários chilenos (N = 681). Os resultados indicam que o EASS constitui um instrumento fiável (α = .86) e válido para a medição do apoio social subjetivo. As dimensões da EASS obtêm entre si uma correlação significativa e moderada (r = .41; p < .001). As cargas fatoriais para os itens na análise fatorial confirmatória flutuaram entre .40 e .93, mostrando bons índices de ajuste para o modelo de dois fatores de primeira ordem correlacionados (CFI = .97, TLI = .93, RFI = .97, IFI = .97, NFI = .96 e RSMEA = .08)

Avoiding hetero/cissexist bias in psychological research: a contribution from latin America

Este artículo teórico busca reflexionar sobre los sesgos hetero/cisexistas y cómo estos podrían afectar la escritura de artículos científicos en psicología y la investigación sobre diversidades sexuales y de género en la misma disciplina. En primer lugar, describe y define conceptos centrales en este campo, en particular, la noción de sesgo. A continuación, delinea algunos de los problemas más salientes que identificamos en este campo, especialmente, aquel referido a la patologización de la homo y la transexualidad. Finalmente, sistematiza algunas recomendaciones que consideramos pertinentes para evitar y/o miniminizar estos sesgos.This theoretical paper seeks to reflect on hetero/cissexist bias and how it could influence scientific papers and research on sexual diversity in the field of psychology. First, the paper defines and describes core concepts in this area, particularly, the notion of bias. Next, some of the most salient problems in this field are outlined, particularly the one concerning homo and transsexuality pathologization. Finally, some recommendations considered pertinent and useful for avoiding and minimizing bias are systematized.Fil: Barrientos Delgado, Jaime. Universidad Alberto Hurtado; ChileFil: Radi, Blas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Filosóficas. - Sociedad Argentina de Análisis Filosófico. Instituto de Investigaciones Filosóficas; Argentina. Universidad de Buenos Aires; Argentin

Tratamiento endodóntico-quirúrgico de un quiste periapical.

Los quistes periapicales aparecen en un 6-55% de los casos con radiolucidez periapical, se desarrollan por contacto crónico con pulpa necrótica y generalmente requieren remoción quirúrgica.Los quistes periapicales son patologías de origen endodontal que comprometen a las piezas afectadas por lo que el endodoncista debe ser capaz de diagnosticar y ofrecer un plan de tratamiento adecuado

Sexual and gender minority health in Chile: findings from the 2016–2017 Health Survey

OBJECTIVE: To expose visibility of the health concerns of sexual and gender minority groups in Chile, as well as to provide a platform to advocate for policies that support the health and well-being of SGM people in the country. METHODS: The health conditions and risk factors of participants identified as sexual and gender minority were compared to those identified as cisgender heterosexual using data from the 2016-2017 National Health Survey. RESULTS: Despite reporting higher self-rated health than heterosexual men, gay men had a higher risk of lifetime diagnosis of sexually transmitted infections. Compared to heterosexual women, the prevalence of depression was higher among bisexual women, who were also less likely to have been tested for HIV. Moreover, transgender participants were more likely to report depression and worse self-rated health than cisgender heterosexual participants. CONCLUSION: Small sample sizes of sexual and gender minority subgroups might have obscured some differences that would have been observable in larger samples. Despite this, we found statistically significant sexual and/or gender identity differences in several health areas, especially mental, sexual, and overall health

Estimation of Hydrological Parameters from Geoelectrical Measurements

In the coastal aquifer of the lowlands on the right side of the river Sinaloa there is need for fresh water for agricultural development since, around 15% of the water used in agricultural irrigation, is from underground sources. This situation is exacerbated in periods of drought, which promotes drilling with the risk of finding brackish water in them; besides, there is the risk of not meeting water demand due to low hydraulic transmissivity (T) of the aquifer, putting at risk the drilling costs that this implies. In this sense, the determination of T and K (hydraulic conductivity) is important for the development and management of groundwater exploitation of the study area. Generally by means of pumping tests in wells, T is obtained, with high costs, so there are few values of T. K is generally obtained by wells and laboratory test. The aim of this chapter is to establish an empirical relationship between T and K with Dar-Zarrouk parameter in porous media, transverse resistance (T R ), in addition to a characterization of the water quality through the electrical resistivity. This parameter is estimated from surface resistivity measurements, which are more economical in relation to the pumping tests; thus, T was characterized in the study area. The coefficient of correlation of the exponential adjustment is 0.79 and the relation is T=137185.7 TR0.020758−156691 and K=367.210.0548−518.813 with coefficient of correlation of 0.678

Tratamiento endodóntico en pieza con taurodontismo. Presentación de un caso clínico.

El taurodontismo es una anomalía de desarrollo que ocurre como resultado de una falla en la vaina epitelial de Hertwig y sus características comprenden una cámara pulpar extremadamente amplia y bifurcación radicular a milímetros del ápice dental

ESTIMATION OF HYDRAULIC CONDUCTIVITY AND CONTENT OF FINES FROM EXPERIMENTAL LAWS THAT CORELATE HYDRAULIC AND ELECTRIC PARAMETERS

Hydraulic conductivity is a basic element in the advancement of knowledge of a geological environment in both the flow and transport processes of pollutants for conservation projects, managementand environmental management and also for the development of public policies for protection of ecosystems, among others. The aim of this paper is to obtain the hydraulic conductivity (K) and the finescontent (C) of saturated granular half using two empirical laws. One correlates the electrical conductivity of saturated granular media σo and water saturated σw which depends on the formation factor(F), cation exchange capacity (CEC) and the fines content in the saturated soil. Using data obtained from materials of 18 samples from 6 wells the relationships between F-C and CEC-C were obtained,so the equation reduces to a σo function in terms of σw and C, with a correlation coefficient of R = 0.97. A second experimental law is the one that results from the experimental relationship between K and C,being 1.4054 K 0.1804.C with a correlation coefficient of R = 0.96. From both experimental expressions relationships between K and C, a and C,and C are created so from every pair knowing one of them you get to know the other one. Under the scheme outlined electrical conductivity sections for the saturated medium and fines content are obtained,finding that the groundwater in the study area consists of a thin top layer and beneath it there is a predominantly sandy environment

Calidad y aptitud de uso agrícola y doméstico del agua del acuífero del río Sinaloa, porción costera

The Guasave valley, Sinaloa is mainly agricultural. There are rural communities that supply water for domestic use from local wells. Economic and social activities occurring on this valley demand water, so that water extraction has shifted to the coastal zone. For this reason, it is important to know the natural mechanisms that control the water chemical composition, its quality, its impact on the ground and its temporal variation in response to its suitability for agricultural or domestic use. To determine the mechanism controlling the water chemistry, the Gibbs diagram was used and it was found that the dominant mechanism is evaporation-weathering. Regarding the domestic use of water, PHASECH quality index was used, finding that water quality is only acceptable near the Sinaloa river. Concerning the suitability for agricultural water use, Wilcox diagram was employed and only 48% the water in the area was classified from good to admissible. Regarding the risk of soil salinization or sodification, the salinity diagram of the U. S. Department of Agriculture was used and it was observed that 35% of the water was located in the C3S1 area. The interrelationship between total dissolved solids and electrical conductivity of water was EC = 1.65 TDS. In addition, it is concluded that the Sinaloa river aquifer is highly sensitive to salinity due its coastal character and the presence of evaporitic bodies far away from the coastline, therefore the threat of saltwater intrusion during a dry period is latent. The presence of the Sinaloa river is an important recharging element that keeps groundwater in suitable conditions for agriculture and very close to those required for domestic use.El valle de Guasave, Sinaloa, es eminentemente agrícola y cuenta con comunidades rurales que se abastecen de agua para su uso doméstico mediante pozos ubicados en sus predios. La actividad económica y social de dicho valle demanda agua para ambas actividades, por lo que su extracción se ha desplazado hacia la zona costera, siendo importante conocer los mecanismos naturales que controlan la composición química del agua, su calidad, su variación temporal atendiendo a la aptitud de uso agrícola o doméstica. Para determinar el mecanismo que controla la composición química del agua se utilizó el diagrama de Gibbs, encontrándose que el mecanismo dominante es por evaporizaciónmeteorización. Respecto al agua para uso doméstico se utilizó el índice de calidad PHASECH, encontrándose que el agua cumple con el mismo sólo en las proximidades del río Sinaloa. En cuanto a la aptitud de uso agrícola del agua se utilizó el diagrama de Wilcox, encontrándose que sólo el 48% del agua de la zona se clasifica como buena a admisible. En cuanto al riesgo de salinización o sodificación del suelo por el uso del agua de riego, se usó el diagrama de salinidad del Departamento de Agricultura de Estados Unidos de Norteamérica, encontrándose que el 35% del agua se ubica en la zona C3S1. La relación obtenida entre los sólidos totales disueltos y la conductividad eléctrica del agua, fue EC = 1.65 STD. Se concluye además, que el acuífero del río Sinaloa es altamente sensible a la salinización por su carácter costero y presencia de cuerpos evaporíticos alejados de la línea de costa, por lo que, el peligro de intrusión salina ante un periodo de sequía es latente. La presencia del río Sinaloa es un elemento relevante de recarga que permite mantener el agua subterránea en condiciones aptas para la agricultura y muy cercanas a las requeridas para uso doméstico