نتایج جستجو برای: negative energy balance

تعداد نتایج: 1291113  

2011
Mine Yildirim Maartje M Van Stralen Mai J M Chinapaw Johannes Brug Willem Van Mechelen Jos W R Twisk Saskia J Te Velde

The aim of this review was to systematically review the results and quality of studies investigating the moderators of school-based interventions aimed at energy balance-related behaviors. We systematically searched the electronic databases of Pubmed, EMBASE, Cochrane, PsycInfo, ERIC and Sportdiscus. In total 61 articles were included. Gender, ethnicity, age, baseline values of outcomes, initia...

Journal: :Journal of dairy science 2001
A V Capuco D L Wood T H Elsasser S Kahl R A Erdman C P Van Tassell A Lefcourt L S Piperova

Twelve Holsteins in first lactation were used to investigate the relationship between energy balance and effects of bovine somatotropin (bST) on thyroid hormone metabolism and cytokine concentrations in serum. Six cows were fed for ad libitum intake and six cows were feed restricted to induce negative energy balance during two treatment periods of 6 d. During treatment periods, cows were admini...

2017
Brock M Huntsman Jeffrey A Falke James W Savereide Katrina E Bennett

Density-dependent (DD) and density-independent (DI) habitat selection is strongly linked to a species' evolutionary history. Determining the relative importance of each is necessary because declining populations are not always the result of altered DI mechanisms but can often be the result of DD via a reduced carrying capacity. We developed spatially and temporally explicit models throughout th...

Journal: :Science 1979
A Robock

Numerical energy balance climate model calculations of the average surface temperature of the Northern Hemisphere for the past 400 years are compared with a new reconstruction of the past climate. Forcing with volcanic dust produces the best simulation, whereas expressing the solar constant as a function of the envelope of the sunspot number gives very poor results.

Journal: :journal of applied and computational mechanics 0
a. m. el-naggar department of mathematics, faculty of science, benha university, egypt gamal ismail mathematics department faculty of science sohag university sohag, egypt

duffing harmonic oscillator is a common model for nonlinear phenomena in science and engineering. this paper presents he´s energy balance method (ebm) for solving nonlinear differential equations. two strong nonlinear cases have been studied analytically. analytical results of the ebm are compared with the solutions obtained by using he´s frequency amplitude formulation (faf) and numerical solu...

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