نتایج جستجو برای: par index
تعداد نتایج: 441136 فیلتر نتایج به سال:
BACKGROUND A noninvasive system for determining left ventricular (LV) filling pressure may help to improve personalized fluid removal goals in hemodialysis patients. We previously showed that the change in photoplethysmography (PPG) pulse amplitude measured by finger PPG during a Valsalva maneuver correlates with invasively measured left ventricular end-diastolic pressure (LVEDP). This key PPG ...
We used a biomarker of activity-related energy expenditure (AREE) to assess measurement properties of self-reported physical activity and to determine the usefulness of AREE regression calibration equations in the Women's Health Initiative. Biomarker AREE, calculated as the total energy expenditure from doubly labeled water minus the resting energy expenditure from indirect calorimetry, was ass...
Résumé : De nombreuses découvertes scientifiques sont contraintes aujourd’hui par la difficile intégration des données misent à disposition dans différentes ressources. L’utilisation d’ontologies pour indexer et intégrer les ressources de données est un moyen de valoriser la connaissance d’un domaine en facilitant la recherche et la fouille de données. Dans cet article nous présentons un mécani...
Le terme d'allergiti cree par VON PIRQUET en 1906 designe "l'etat d'un individu qui sensibilise a un substance, y reagit ulterieurement d'une facon anormale, c'est a dire exageree (Pasteur Vallery Ra dot). On distingue schematiquement deux types d'allergie: L'hypersensibilie imme<liat de type humorale et l'hypersensibilite du type retarde ou cellulaire. Si dans la. clinique, les lesions cu...
Net ecosystem exchange of CO2 (NEE) in temperate forests is modulated by multiple microclimatic factors. The effects of these factors vary across time scales, with some correlated to produce confounding effects. Photosynthetically active radiation (PAR) and air temperature (Ta) are among the two most important drivers of NEE in temperate forests and are highly correlated because of their simila...
Background & Aims of the Study: In this study, 4-(2-pyridylazo) resorcinol (PAR) as model azo dye was used. In spectroscopic measurements and studies of PAR reagent as a ligand are used to formation a complex with toxic metals. So, removal and degradation these compounds of wastewaters are necessary. The aim of this study is the degradation of PAR from aqueous solutions in circulating fludized ...
The peak-to-average power ratio (PAR) of an orthogonal frequency division multiplexing (OFDM) signal can be substantially larger than that of a single carrier system. Partial transmit sequence (PTS) combining can improve the PAR statistics of an OFDM signal. For PTS, the search complexity increases exponentially with the number of subblocks. Here, we present a new algorithm for computing the ph...
Net photosynthesis rate (PN) has an important role in controlling the ecosystem primary production and it is important to understand the relationships between PN and other physiological and environmental variables to improve and develop models for predicting plant growth and productivity. Here we study utility of ground-based hyperspectral measurements in estimating net photosynthesis during th...
BACKGROUND Pelvic floor repair is often unsuccessful for the treatment of incontinence. Some patients undergo repeated operations, and a few may require a stoma that can result in further operations. METHOD We have examined the cost of two forms of pelvic floor repair: post-anal repair (PAR; n = 47) and total pelvic floor repair (TPFR; n = 32). RESULTS Persistent incontinence, which had an ...
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