Search results for "Torr"
showing 10 items of 257 documents
High-Speed Video Microscopy for Primary Ciliary Dyskinesia Diagnosis: A Study of Ciliary Motility Variations with Time and Temperature
2021
Este artículo se encuentra disponible en la siguiente URL: https://www.mdpi.com/2075-4418/11/7/1301 Este artículo de investigación pertenece al número especial "Progress in Diagnosing and Managing Primary Ciliary Dyskinesia". Primary ciliary dyskinesia (PCD) is a rare disease resulting from a defect in ciliary function that generates, among other issues, chronic upper and lower respiratory tract infections. European guidelines recommend studying ciliary function (pattern (CBP) and frequency (CBF)), together with characteristic clinical symptoms, as one of the definitive tests. However, there is no “gold standard”. The present study aims to use high-speed video microscopy to describe how CBF…
Top-cited articles in cerebrospinal fluid leak (rhinorrhea and otorrhea) (1945–2018)
2021
Abstract Introduction: As scientific knowledge has grown in biomedicine, it has also become necessary to develop tools to manage and understand the body of evidence. In that sense, bibliometrics has become a consolidated discipline for analyzing scientific activity, enabling the characterization of a particular field or area of knowledge by means of the quantification of the bibliographic characteristics of scientific publications. Objective: The objective of this study was to determine the most frequently cited articles in the field of cerebrospinal fluid rhinorrhea and otorrhea. Methods: The searches took place on the Clarivate Analytics Web of Science platform, which includes the MEDLINE…
<title>Eye movements during silent and oral reading with stabilized versus free head movement and different eye-trackers</title>
2008
Eye movement research of reading has been done on a battery of eye-tracking setups during last decades. We compared reading data of the same group of six students, their eyes were tracked by a video-based helmet-mounted system with the data sampling frequency of 50 Hz and a setup with a chin-rest at 240 Hz. We found that not only the number of fixations may decrease after reading practice, but so does also the mean duration of fixations. In spite of the short duration of saccades, their distributions and changes in them are similarly reported in the two experimental conditions. Lack of significant correlation in the HED data testifies to the result variability due to measurement technique. …
COVID-19 Infection Process in Italy and Spain: Are Data Talking? Evidence From ARMA and Vector Autoregression Models
2020
COVID-19 (coronavirus disease 2019) has spread successfully worldwide in a matter of weeks. After the example of China, all the affected countries are taking hard-confinement measures to control the infection and to gain some time to reduce the significant amount of cases that arrive at the hospital. Although the measures in China reduced the percentages of new cases, this is not seen in other countries that have taken similar measures, such as Italy and Spain. After the first weeks, the worry was whether or not the healthcare system would collapse rather than its response to the patient's needs who are infected and require hospitalization. Using China as a mirror of what could happen in ou…
Manejo de las otolicuorreas
2013
Introduction: Cerebrospinal fluid otorrhea results from an abnormal communication between the subarachnoid space and tympanomastoid compartment; most of them are of traumatic aetiology. They have clinical interest due to the potential risk of meningitis, directly related to the aetiology. Our aim was to show our experience in the management of this process. Methods: A total of 17 patients diagnosed and treated for cerebrospinal fluid otorrhea from 2003 to 2011.
Diseño, caracterización y propuestas de aplicación de sensores GMR (Giant MagnetoResistance) en medida de corriente a nivel de circuito integrado
2013
El efecto MagnetoRresistivo Gigante (GMR) es un mecanismo de acoplo magnético que se da en estructuras multicapa con espesores de nanómetros. En estos dispositivos, la resistencia varía con la aplicación de un campo magnético externo en unos niveles que permiten su uso como sensores, incluso a temperatura ambiente. Es tal la utilidad de los dispositivos basados en GMR, que sus descubridores fueron galardonados con el Premio Nobel de Física en 2007. La constante evolución que está experimentando esta tecnología está abriendo nuevos campos de aplicación, principalmente relacionados con la medida de pequeños campos magnéticos mediante micro y nano-dispositivos, como la biotecnología y la micro…
Fabricación, caracterización, modelado y propuesta de aplicabilidad de sensores magnetorresistivos de efecto túnel para medición de potencia y sensor…
2015
En el capítulo 1 se describen los fundamentos teóricos a utilizar para los análisis y estudios a realizar más adelante, así como una breve explicación del estado de la técnica que es el estado actual de la tecnología al momento de redacción de la tesis. La introducción se divide en la tecnología magnetorresistiva, definiendo qué es y los efectos magnetorresistivos que existen así como su aplicación aeroespacial y modelización fraccional. A continuación se presenta el procesamiento digital de datos y las redes de sensores tratando un poco sobre los protocolos de comunicación formatos y aplicación de la transformada digital de Fourier. En el capítulo 2 se aborda la microfabricación de los sen…
Influence of torrefaction pretreatment on the pyrolysis of Eucalyptus clone: A study on kinetics, reaction mechanism and heat flow
2016
Abstract The adverse nature of biomass requires specific pretreatment processes to better utilize it in bioenergy applications, and torrefaction is one of the most recognized thermal pretreatment methods. In this regard, we studied the effect of torrefaction pretreatment on kinetics, reaction mechanism and heat flow during the pyrolysis of biomass by making a comparative analysis between the pyrolysis of dried and torrefied Eucalyptus wood. Torrefied biomass was produced at three temperatures, namely 250, 275 and 300 °C. Pyrolysis was performed at 700 °C. The char yield during pyrolysis increased from 22.39 percent to 36.34 percent when the torrefaction temperature was increased from 250 to…
Ķīniešu rakstzīmju optiskā atpazīšana
2019
Daudzu cilvēka ikdienas sastāvdaļu digitalizācija pēdejās desmitgadēs ir vērusi ceļu optisko rakstzīmju atpazīšanas sistēmām, kuru mērķis ir automatizēt rakstītu un drukātu dokumentu, piemēram, grāmatu, konvertēšanu datorrediģējamā formātā. Šī darba mērķis ir izpētīt optiskās rakstzīmju atpazīšanas procesus un metodiku, un, pamatojoties uz šo teoriju, izstrādāt optiskās rakstzīmjuatpazīšanas sistēmu, kas spēj atpazīt strukturētu Žujiņ (jeb Bopomofo) tekstu.
Las torres de telegrafía óptica de la línea Madrid-Valencia
2015
Las torres son el último vestigio del sistema de comunicación por telegrafía óptica que existía en España a mediados del siglo XIX. Pese a su valor histórico se encuentran, salvo contadas excepciones, en un estado de abandono que las ha llevado a degradarse llegando en algunos casos a desaparecer. A ello contribuye el desconocimiento generalizado tanto por parte de los habitantes de los municipios en los que se encuentran como de la sociedad en general. Con este trabajo se pretende realizar un estudio de las torres existentes entre las ciudades de Valencia y Madrid, analizando su construcción y estado actual, que demuestre el precario estado en el que se encuentran y la necesidad de interve…