نتایج جستجو برای: balance equation

تعداد نتایج: 367578  

Journal: :Federation proceedings 1947
J B ALLISON R D SEELEY F P FERGUSON

where UN0 is the excretion of urinary nitrogen on a protein-free diet and K is the nitrogen balance index of the dietary nitrogen (1). This is an equation for a straight line in regions of negative and low positive nitrogen balance where this balance is linearly related to absorbed nitrogen. Thus the index (K), which is the rate of change of nitrogen balance with respect to absorbed nitrogen, i...

2010
Diana Thomas Sai Krupa Das James A Levine Corby K Martin Laurel Mayer Andrew McDougall Boyd J Strauss Steven B Heymsfield

BACKGROUND The Forbes equation relating fat-free mass (FFM) to fat mass (FM) has been used to predict longitudinal changes in FFM during weight change but has important limitations when paired with a one dimensional energy balance differential equation. Direct use of the Forbes model within a one dimensional energy balance differential equation requires calibration of a translate parameter for ...

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2010
Josée Bouchard Etienne Macedo Sharon Soroko Glenn M Chertow Jonathan Himmelfarb Talat Alp Ikizler Emil P Paganini Ravindra L Mehta

BACKGROUND In critically ill patients with acute kidney injury, estimates of kidney function are used to modify drug dosing, adjust nutritional therapy and provide dialytic support. However, estimating glomerular filtration rate is challenging due to fluctuations in kidney function, creatinine production and fluid balance. We hypothesized that commonly used glomerular filtration rate prediction...

Journal: :Comp. Opt. and Appl. 2014
Alina Chertock Michael Herty Alexander Kurganov

We present a numerical method for solving tracking-type optimal control problems subject to scalar nonlinear hyperbolic balance laws in one and two space dimensions. Our approach is based on the formal optimality system and requires numerical solutions of the hyperbolic balance law forward in time and its nonconservative adjoint equation backward in time. To this end, we develop a hybrid method...

Journal: :Theoretical and Applied Mechanics Letters 2020

Journal: :Journal of the Meteorological Society of Japan. Ser. II 1956

Journal: :Journal of Statistical Mechanics: Theory and Experiment 2010

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