ASIC-based tachometer without mechanical transducer for induction machines

A classical method for angular position and speed estimation in adjustable speed drives uses an incremental shaft encoder and an electronic circuit. This paper presents SLESS, a tachometer without mechanical transducer implemented on an ASIC using sensorless speed estimation technique. The ASIC is intended to serve as part of an integrated solution developed for fuzzy speed regulation and vector control of induction motors

Realización de un filtro activo de potencia empleando una FPGA

En este artículo se presenta un sistema para compensación de reactiva y eliminación de armónicos en la conexión de una carga a una red eléctrica. El sistema emplea una simple tarjeta que incorpora una FPGA, un microprocesador, una memoria doble puerta y convertidores A/D, y que genera directamente los pulsos de disparo de los elementos de conmutación de un inversor trifásico

Genome-wide association study of Tourette Syndrome

Tourette Syndrome (TS) is a developmental disorder that has one of the highest familial recurrence rates among neuropsychiatric diseases with complex inheritance. However, the identification of definitive TS susceptibility genes remains elusive. Here, we report the first genome-wide association study (GWAS) of TS in 1285 cases and 4964 ancestry-matched controls of European ancestry, including two European-derived population isolates, Ashkenazi Jews from North America and Israel, and French Canadians from Quebec, Canada. In a primary meta-analysis of GWAS data from these European ancestry samples, no markers achieved a genome-wide threshold of significance (p<5 × 10−8); the top signal was found in rs7868992 on chromosome 9q32 within COL27A1 (p=1.85 × 10−6). A secondary analysis including an additional 211 cases and 285 controls from two closely-related Latin-American population isolates from the Central Valley of Costa Rica and Antioquia, Colombia also identified rs7868992 as the top signal (p=3.6 × 10−7 for the combined sample of 1496 cases and 5249 controls following imputation with 1000 Genomes data). This study lays the groundwork for the eventual identification of common TS susceptibility variants in larger cohorts and helps to provide a more complete understanding of the full genetic architecture of this disorder

Partitioning the Heritability of Tourette Syndrome and Obsessive Compulsive Disorder Reveals Differences in Genetic Architecture

The direct estimation of heritability from genome-wide common variant data as implemented in the program Genome-wide Complex Trait Analysis (GCTA) has provided a means to quantify heritability attributable to all interrogated variants. We have quantified the variance in liability to disease explained

Maximum permisible temperature deviations for thermolabile medicines

Los medicamentos termolábiles constituyen un grupo especialmente susceptible, a que se produzcan errores en su conservación durante su transporte y su almacenaje en el Servicio de Farmacia y en los botiquines de las distintas Unidades Clínicas. El objetivo de este estudio ha sido elaborar una tabla de consulta rápida donde se incluyen los tiempos de estabilidad a temperatura ambiente y las actuaciones en caso de congelación, de los medicamentos incluidos en la Guía Farmacoterapéutica del Hospital. Su confección se hizo a partir de los datos solicitados y proporcionados por los Laboratorios fabricantes.Thermolabile medicines are especially susceptible to storage errors in both transportation and storage at pharmacies and dispensing units in different clinical centres. The objective of this study was to produce a quick consultative table that gives information on stability times at room temperature and procedures when freezing of medicines occur, for drugs included in hospital pharmacotherapeutic guides. The table was produced from information provided by manufacturing laboratories