نتایج جستجو برای: reference standards
تعداد نتایج: 370182 فیلتر نتایج به سال:
BACKGROUND Automatic measurement of arterial blood pressure is important, but the available commercial automatic blood pressure meters, mostly based on oscillometry, are of low accuracy. METHODS In this study, we present a cuff-based technique for automatic measurement of systolic blood pressure, based on photoplethysmographic signals measured simultaneously in fingers of both hands. After in...
We have established a reference standard for the cross-sectional area (CSA) of supraspinatus as measured by diagnostic ultrasound. The influence of hand dominance and of ageing on the CSA was also assessed. We examined 72 subjects aged from 20 to 79 years. Standard values of the CSA were determined with a high measure of interobserver reliability. Although the CSA on the dominant side was signi...
Authors' objectives The objective of this Special Report is to present the particular challenges that this diagnostic technology presents in terms of evaluating the evidence to determine its potential benefit. Without a thorough presentation of the manner in which MEG is used in the evaluation of patients, it is difficult to determine whether the technology is beneficial. Various problems such ...
OBJECTIVES The aim of the study was to describe changes in intestinal permeability in early childhood in diverse epidemiologic settings. METHODS In a birth cohort study, the lactulose:mannitol (L:M) test was administered to 1980 children at 4 time points in the first 24 months of life in 8 countries. Data from the Brazil site with an incidence of diarrhea similar to that seen in the United St...
The aim of this population-based study was to develop body mass index (BMI) reference standards for Kuwaiti adolescents for use in Kuwait and other Gulf countries. All available intermediate school students aged 10-14 years (32 624 males and 30 209 females) were measured for weight and height. Polynomial regression smoothing techniques were used to obtain the best-fitting curves for BMI percent...
This paper presents the results of a study in which scientists were asked about their own publicationsand their citation counts. The study shows that overall the citation counts of the publicationscorrespond reasonably well with the authors’ own assessments of scientific contribution. Generally,citations proved to have the highest accuracy in identifying either major or minor contri...
Proportional-Integral-Derivative (PID) controllers are undoubtedly the most employed controllers in industry. Also, since the so called exact model matching is impossible in the actual realities, the partial model matching from the lowest order term to as higher the term as possible is adopted by Kitamori. This controller has a structure which cousists of information about the controlled object...
Assessments of undernutrition are typically based on comparisons between anthropometric indicators of children and a reference standard from the US. Due to a number of problems associated with this reference standard, WHO is currently engaged in generating a new international reference standard for child growth based on well-to-do populations in a sample of poor and rich countries. The focus on...
We report here the complete genome sequence of Bacillus thuringiensis subsp. kurstaki strain HD-1, which serves as the primary U.S. reference standard for all commercial insecticidal formulations of B. thuringiensis manufactured around the world.
Results from clinical laboratory measurement procedures must be equivalent to enable effective use of clinical guidelines for disease diagnosis and patient management. Analytical results that are harmonized and independent of the measurement system, time, and location of testing is essential for providing adequate patient care. The key to generating harmonized results is establishing traceabili...
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