نتایج جستجو برای: hf limit
تعداد نتایج: 210549 فیلتر نتایج به سال:
Limitation of exercise capacity is a hallmark of chronic congestive heart failure (HF), varying directly with the severity of the disease. Muscular fatigue and dyspnea on exertion are the most common symptoms of exercise intolerance; however, their origin is still not fully explained. Heart failure is a multifaceted clinical syndrome characterized by the inability of the heart to generate cardi...
A modified version of the Møller-Plesset approach for obtaining the correlation energy associated to a Hartree-Fock ground state is proposed. The method is tested in a model of interacting fermions that allows for an exact solution. Using up to third order terms improved results are obtained, even in the limit of loosely bound particles. The study of molecules and larger systems is seriously co...
در این پژوهش از طریق عبور مخلوط گازهای hf و 2n از بستر پر شده حاوی قرصهای naf جذب hf توسط بستر مورد بررسی قرار گرفته است. در زمانهای اولیه عبور گاز از بستر، کلیه hf موجود در گاز توسط قرصها جذب می شود. به علت پایین بودن سرعت جذب، طول منحنی اشباع در بازه زمانی دیده شدن hf در گاز خروجی و اشباع کامل برج زیاد می باشد. ظرفیت جذب قرصها در حالت اشباع کامل برابر با 96/5 درصد جرم آنها محاسبه شد. جذب...
در این پژوهش از طریق عبور مخلوط گازهای HF و 2N از بستر پر شده حاوی قرصهای NaF جذب HF توسط بستر مورد بررسی قرار گرفته است. در زمانهای اولیه عبور گاز از بستر، کلیه HF موجود در گاز توسط قرصها جذب می شود. به علت پایین بودن سرعت جذب، طول منحنی اشباع در بازه زمانی دیده شدن HF...
BACKGROUND B-Type natriuretic peptide (BNP) is released from the left ventricle of the heart into the circulation in response to ventricular stretching and volume overload. Increased BNP concentrations are associated with heart failure (HF). METHODS We evaluated the analytical and clinical performance of the Bayer ADVIA Centaur BNP assay. Studies included precision, analytical correlation (ag...
the acidity constants (pka) of thirty four (34) ;-substituted carboxylic acids in aqueous solution havebeen calculated using conductor-like polarizable continuum (c-pcm) solvation model. the gasphaseenergies at the density functional theory (dft-mpw1pw91) and solvation energies athartree fock (hf) are combined to estimate the pka values which are very close to the experimentalvalues where, and ...
vinblastine is an important anticancer agent known to diminish microtubule assembly. ab initio calculations are applied to examine the structural properties and different energies of vinblastine-tubulin complex in different dielectric constants and temperatures. the aims of this work are discovery the best optimized structure and thermodynamic properties of vinblastine-tubulin complex and compa...
enaminones are those structures made up three various functional groups including carbonyl, alkeneand amine groups which arelocated along with each other in a conjugate fashion. these compoundsare of much attention due to special characteristics and numerous applications. in the paper, sixvarious enaminone structures were theoretically optimized and after concluding, were compared withequivalen...
vitamin d deficiency is common among the elderly with and without heart failure (hf). this study was designed to identify the degree of vitamin d deficiency among hf and non- hf elderly with cardiovascular disease. in this study, fifty hospitalized elderly patients with hf (26 women and 24 men, age range 60-90 years) and fifty elderly without hf were randomly selected. the level of serum 25-hyd...
We consider a (semi-)relativistic spin-1/2 particle interacting with quantized radiation. The Hamiltonian has the form Ĥ c := {c2[(p + A) +σ ·B] + (mc2)2}1/2 −mc2 +V +Hf . Assuming that the potential |V | is bounded with respect to the momentum |p|, we show that Ĥ c converges in norm-resolvent sense to the usual Pauli-Fierz operator when c, the speed of light, tends to ∞.
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید