Bíogeoquímica y geobotánica de metales básicos en el área de mocoa-putumayo (colombia) estudios preliminares

Este trabajo, realizado como una primera aproximación en la investigación Biogeoquímica de Metales en el área de Mocoa-Putumayo (Gaviria, 1981), dentro del Proyecto Landsat-Mocoa, resume los resultados de análisis para material foliar de algunas especies vegetales recolectadas a finales de 1980 en el área del Prospecto de Pórfido Cuprífero de Mocoa y sus alrededores, que explorar  INGEOMINASNACIONES UNIDAS. Se hacen las interpretaciones de los resultados preliminares y se dan algunas recomendaciones para la continuación del programa propuesto. Las primeras muestras indican que efectivamente la presencia de minerales de Cu y Mo (Zn), afectan el contenido de dichos elementos en la vegetación que crece dentro del área de influencia de los depósitos, y será posible determinar las especies indicadoras que servirán de ayuda a la prospección de yacimientos minerales en regiones selváticas

Evaluación participativa de los extractos vegetales acuosos Barbasco (polygonum hydropiperoides) Marigol (Tegetes patula) y Neem (Azadirachta indica) para el manejo de plagas en el cultivo de tomate de mesa (Lycopersicon sculentum) en areas de economía campesina de los municipios de Cajamarca, Ibagué y líbano (Tolima)

La presente opción metodológica contribuye o mejorar los procesos de investigación participativa en áreas de economía campesina, por medio de procesos de aprendizaje e integración entre los mismos productores de uno localidad y entre los productores y los investigadores.Tomate-Solanum lycopersicu

Guidelines for oral assessment

En este documento se presentan los lineamientos y teoría para la implementación de un sistema de evaluación oral en el Centro de Idiomas de la Universidad Eafit. El texto desarrolla tres temas principales: 1) el enfoque comunicativo para la enseñanza y la evaluación ; 2) la planeación de la evaluación; y 3) el uso de las herramientas de evaluación.This document aims at offering teachers a framework for assessing oral language and some guidelines that will foster the implementation and practice of a homogeneous oral assessment system (OAS) at the EAFIT University Language Center. The document deals with three main topics, namely (1) Communicative Approach to Teaching and Assessment; (2) Planning for Assessment; and (3) Using the Oral Assessment Rubric

Método racional de lectura práctica para uso de las escuelas

Rústic

Safety of vaginal erbium laser: A review of 113,000 patients treated in the past 8 years.

Background: Energy-based devices are becoming a popular option for minimally invasive vaginal procedures. The aim of this study was to obtain information on the frequency of occurrence of adverse effects (AEs) related to vaginal erbium laser (VEL™) treatment.Materials and methods: The global survey was conducted among practitioners using the non-ablative VEL™ (Fotona, Ljubljana, Slovenia). Users were invited to provide the number of patients treated with VEL™ and the number of observed laser-related AEs.Results: The survey was conducted from August 2018 to April 2019. Responses from 535 practitioners were collected, with a total of 113,174 patients treated in the period from 2012 to 2019. Out of 535 respondents, 160 (30%) shared detailed information about the indications they treated in a population of 62,727 patients, whereas 188 (35%) respondents provided information on the frequency of AEs observed in their treated population of 43,095 patients. All observed AEs were mild to moderate, transient and appeared with low frequencies.Conclusions: Minimally invasive thermal-only laser treatment using the non-ablative VEL™ procedures appears to be safe and the incidence of AEs is low

An effective procedure to design the layout of standard and enhanced mode-S multilateration systems for airport surveillance

In this paper, an effective procedure to emplace standard and enhanced mode-S multilateration stations for airport surveillance is studied and developed. This procedure is based on meta-heuristic optimization techniques, such as genetic algorithm (GA), and is intended to obtain useful parameters for an optimal system configuration that provides acceptable performance levels. Furthermore, the procedure developed here is able to evaluate and improve previous system designs, as well as possible system enhancements. Additionally, the design strategies to be used along with the procedure proposed here are fully described. Parameters such as the number of stations, the system geometry, the kind of measurements to be used, and the system accuracy are obtained taking into account the basic requirements such as the Line of Sight, the probability of detection, and the accuracy levels. © Cambridge University Press and the European Microwave Association, 2012

Genetic and clinical peculiarities in a new family with hereditary hypophosphatemic rickets with hypercalciuria: a case report

Hereditary hypophosphatemic rickets with hypercalciuria is a rare autosomal recessive disorder (OMIM #241530), characterized by decreased renal phosphate reabsorption that leads to hypophosphatemia, rickets, and bone pain; hypophosphatemia is believed to stimulate 1,25 dihydroxyvitamin D synthesis which, in turn, results in hypercalciuria. Hereditary hypophosphatemic rickets with hypercalciuria is caused by loss-of-function in the type 2c sodium phosphate cotransporter encoded by the SLC34A3 gene. This report shows a family with a non-previously identified mutation in the SLC34A3 gene and exhibiting mild and different manifestations of HHRH. The probandus had hypophosphatemia, elevated serum 1,25 dihydroxyvitamin D concentrations, high serum alkaline phosphatase levels, hypercalciuria and nephrocalcinosis. The other members of the family presented some of these alterations: the mother, hypercalciuria and high 1,25 dihydroxyvitamin D concentrations; the son, hypercalciuria, high 1,25 dihydroxyvitamin D values and elevated alkaline phosphatases; the father, high alkaline phosphatases. The genetic analysis revealed the existence of a single mutation (G78R) in heterozygosis in the SLC34A3 gene in the probandus, her mother and her brother, but not in the father. These findings suggest that he mutation in heterozygosis likely gave rise to a mild phenotype with different penetrance in the three relatives and also indicates that the elevation of 1,25 dihydroxyvitamin D does not result from hypophosphatemia. Thus, this family raises some issues on the transmission and pathophysiology of hereditary hypophosphatemic rickets with hypercalciuria

The Stock Market Reaction to Mergers and Acquisitions: Evidence from the Banking Industry

Mergers and acquisitions (M&As) are mainly a mechanism used in the Latin American banking industry to carry out business consolidation. This paper focuses on the effect of M&A announcements on stocks of Latin American banks and their rivals between 2000 and 2019. We evaluate two impacts of M&A announcements: impacts on cumulative abnormal returns (CAR) and impacts on event-induced variance (EIV). We use the GARCH-based event-study method. We find that acquirers and target banks have a statistically significant CAR, however, the sign is inconclusive. Rivals of acquirers and targets are not affected by M&A announcements. In general, we observe that EIV is negative for acquirers, targets, and rivals. Finally, we estimate a multivariate GARCH model to isolate the effects of co-movements of volatility between the acquirer and the target, and we find that the results remain qualitatively equal