Enfoque hacia el uso de energías alternativas en establecimientos de atención médica / Approach to the use of alternative energies in medical care facilities

Introducción: El tema del cambio climático y sus efectos, en la salud, educación y transporte, es un tema emergente, que pretende la optimización del consumo y la eficiencia energética. Esta investigación se plantea como objetivo,la caracterización del uso y aprovechamiento de energías, en establecimientos de atención médica de la región capital durante el año 2022, considerando la distribución energética, eficiencia y fuentes primarias de energía utilizadas en este país. Métodos: Se trata de una investigación descriptiva, transversal y prospectiva,a través del análisis cuali-cuantitativo, con el uso de informantes clave quienes consideran importante la iluminación natural en los espacios y el mayor aprovechamiento energético en áreas como la quirúrgica y consulta externa. Resultados: Surge el uso de la energía solar, eólica e hidráulica como recursos energéticos aprovechables, así como la sostenibilidad y la mantenibilidad en el diseño y rediseño de infraestructuras hospitalarias. Los tipos de energías utilizados en Venezuela, siguen correspondiendo ala hidráulica y combustibles fósiles, se conoce la tecnología e implementación de paneles solares para la mejoría del cambio climático, la huella del carbono, el uso de energías verdes y reducción de combustibles fósiles. Su aceptación depende de regulaciones y la concientización energética como elementos fundamentales para el cambio.

Introduction: The issue of climate change and itseffects, in health, education and transportation, is an emergingissue, which aims at the optimization of energy consumption andefficiency. e objective of this research is to characterize the useand exploitation of energy in health care facilities in the capitalregion during the year 2022, considering the energy distribution,efficiency and primary energy sources used in this country.Methods: This is a descriptive, cross-sectional and prospectiveresearch, through qualitative-quantitative analysis, with the useof key informants who consider important the natural lightingin the spaces and the greater use of energy in areas such assurgery and outpatient care. Results: The use of solar, windand hydraulic energy emerged as usable energy resources, aswell as sustainability and maintainability in the design andredesign of hospital infrastructures. The types of energy used inVenezuela continue to correspond to hydraulics and fossil fuels; the technology and implementation of solar panels is known forthe improvement of climate change, the carbon footprint, theuse of green energy and reduction of fossil fuels. Their acceptancedepends on regulations and energy awareness as fundamental elements for change.

Reader association participation-based crowd sourcing of virtual reference service in medical college and university libraries / 中华医学图书情报杂志

As a brand new service mode on Internet,crowd sourcing can solve the problems that need high cost and professionals by drawing on the wisdom of tens of thousands of Internet users. Medical college and university libraries should thus strengthen their virtual reference service teams and further improve their virtual reference service level by introducing the crowd sourcing concept,depending on the support of reader association and drawing on the wisdom of readers.

Mushroom tyrosinase inhibition activity of Aloe vera L. gel from different germplasms / 中国天然药物

In this study, lyophilized and methanolic extracts of aloe gel from different germplasms were evaluated for their potential to inhibit mushroom tyrosinase activity. The results showed potent inhibitory effect of Aloe vera gel extracts on L-dihydroxyphenylalanine (L-DOPA) oxidation catalyzed by tyrosinase in a dose-dependent manner. Significant differences in % inhibition of tyrosinase among the extraction methods and the germplasms were observed. The relative performance of the germplasms was evaluated with the help of posthoc multicomparison test. The methanolic extract was more effective than the lyophilized crude gel in all the germplasms. The inhibitory effect of the lyophilized gel and methanolic extract tested from five germplasms followed the order: RM > TN > S24 > OR > RJN. The germplasm RM showed the highest tyrosinase inhibition, and the maximum % inhibition noted was 26.04% and 41.18%, respectively for the lyophilized and methanolic extracts at 6 mg · mL(-1) concentration. Lineweaver-Burk plots of the different concentrations of L-DOPA in the absence and presence of lyophilized gel extract showed competitive inhibition of mushroom tyrosinase in all the germplasms. This study suggests that the germplasm RM could potentially be used for the isolation and identification of the effective tyrosinase inhibitory component, and ascertains the critical role of selecting the best source of germplasm for natural product isolation and characterization.