Results 221 to 230 of about 221,098 (260)
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Calcium and magnesium in China’s public drinking water and their daily estimated average requirements

Environmental Geochemistry and Health, 2022
Calcium (Ca) and magnesium (Mg) in drinking water and the relevant health effects have been ignored for too long. This study aims to reveal the concentrations, spatial distributions, origins and contributions to the daily estimated average requirements of Ca and Mg in public drinking water.
Hao, Peng   +4 more
openaire   +2 more sources

Climatic estimates of average and probable irrigation requirements and of seasonal drainage in Canada

Journal of Hydrology, 1970
Abstract This paper demonstrates the use of published information on average and probable irrigation requirements which were estimated by means of a meteorological budgeting technique from 30-year daily climatic records. This information, available for 59 stations across Canada, is useful for planning irrigation systems and interpretations of climate
W. Baier, Geo.W. Robertson
openaire   +1 more source

Temporal sampling requirements for estimation of long-term average sound levels in the vicinity of airports

The Journal of the Acoustical Society of America, 1981
Community noise temporal sampling requirements in general, and in the vicinity of airports or other large noise producers in particular, are not well understood. Frequently, the purpose is to sample and estimate the true yearly Day/Night Average Sound Level (DNL) or Community Noise Equivalent Level (CNEL).
P. D. Schomer, R. E. DeVor
openaire   +1 more source

Endoscopic requirements of colorectal cancer screening programs in average-risk population. Estimation according to a Markov model

Gastroenterología y Hepatología, 2008
Although colorectal cancer (CRC) screening strategies are quite common in the United States, their systematic introduction in Europe has been delayed until the year 2008. To estimate endoscopic requirements of four different CRC screening strategies (annual and biennial fecal occult blood testing (FOBT), flexible sigmoidoscopy every 5 years, and ...
Francisco, Rodríguez-Moranta   +9 more
openaire   +2 more sources

A Bound on the Precision Required to Estimate a Boolean Perceptron from Its Average Satisfying Assignment

SIAM Journal on Discrete Mathematics, 2006
A Boolean perceptron is a linear threshold function over the discrete Boolean domain {0,1}n. That is, it maps any binary vector to 0 or 1, depending on whether the vector's components satisfy some linear inequality. In 1961, Chow showed that any Boolean perceptron is determined by the average or "center of gravity" of its "true" vectors (those that are
openaire   +1 more source

Estimation of fertilizer nitrogen requirement for average rice yield in Japanese paddy fields

Soil Science and Plant Nutrition, 2002
Abstract The fertilizer N requirement (Nf500) for average rice yield (500 g m−2) in the paddy fields of Japan was estimated. The Nf500 of a paddy field is defined as Nf500 = Nf (500 - Y n0) / (Y - Y 0), where Y is the grain yield of the NPK plot, Y 0 is the grain yield within the PK plot, and N f is the rate of N application in the NPK plot. Nf500, was
openaire   +1 more source

Criteria for Estimating the Required Average Strength f'cr to Comply with the Specified Compressive Strength f'c

ACI Materials Journal, 1987
The ACI Building Code criteria for estimating the required average strength f'cr is evaluated using actual field data. Basically, the current criteria specify that the required average strength f'cr should be larger than the specified compressive strength f'c by a certain amount.
openaire   +1 more source

Validation of a Novel Protocol for Calculating Estimated Energy Requirements and Average Daily Physical Activity Ratio for the US Population: 2005-2006

Mayo Clinic Proceedings, 2013
To validate the PAR protocol, a novel method for calculating population-level estimated energy requirements (EERs) and average physical activity ratio (APAR), in a nationally representative sample of US adults.Estimates of EER and APAR values were calculated via a factorial equation from a nationally representative sample of 2597 adults aged 20 and 74 ...
Archer, Edward   +8 more
openaire   +5 more sources

Synthesis and absorption of intestinal microbial lysine in humans and non-ruminant animals and impact on human estimated average requirement of dietary lysine

Current Opinion in Clinical Nutrition & Metabolic Care, 2006
While there are reports on the nature of synthesis and absorption of intestinal microbial lysine in humans and non-ruminant animals, there are few efforts to quantify microbial amino acid absorption in human subjects. We review the available information on the synthesis of microbial lysine and the quantification of its absorption and utilization by the
Cornelia C, Metges   +2 more
openaire   +2 more sources

Clinical validity of the estimated energy requirement and the average protein requirement for nutritional status change and wound healing in older patients with pressure ulcers: A multicenter prospective cohort study

Geriatrics & Gerontology International, 2014
AimAdequate nutritional intake is essential for pressure ulcer healing. Recently, the estimated energy requirement (30 kcal/kg) and the average protein requirement (0.95 g/kg) necessary to maintain metabolic balance have been reported. The purpose was to evaluate the clinical validity of these requirements in older hospitalized patients with pressure ...
Shinji, Iizaka   +4 more
openaire   +2 more sources

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