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تعداد نتایج: 16828564 فیلتر نتایج به سال:
We investigate the use of sparse approximate-inverse preconditioners for the iterative solution of unsymmetric linear systems of equations. Such methods are of particular interest because of the considerable scope for parallelization. We propose a number of enhancements which may improve their performance. When run in a sequential environment, these methods can perform unfavourably when compare...
The effects of daily metabolizable energy intakes of 9.5 (low), 15.4 (medium) and 24.9 (high) Mcal in pregnant yearling heifers on maternal serum metaboli te concentrations and on fetal development as indicated by RNA, DNA and protein concentrations in liver and semitendinosus muscle were studied in 88 crossbred heifers. Pregnant heifers were slaughtered at 90, 120, 150, 180, 210, 240 and 255 d...
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Chronic blood transfusion is increasingly indicated in patients with sickle cell disease. Measuring resulting iron overload remains a challenge. Children without viral hepatitis enrolled in 2 trials for stroke prevention were examined for iron overload (STOP and STOP2; n = 271). Most received desferrioxamine chelation. Serum ferritin (SF) changes appeared nonlinear compared with prechelation es...
BACKGROUND AND PURPOSE The role of intracranial hemodynamics in the pathophysiology and risk stratification of brain AVMs remains poorly understood. The purpose of this study was to assess the influence of Spetzler-Martin grade, clinical history, and risk factors on vascular flow and tissue perfusion in cerebral AVMs. MATERIALS AND METHODS 4D flow and perfusion MR imaging was performed in 17 ...
INTRODUCTION We evaluated chr6q25.3 organic cation transporter gene (SLC22A1, SLC22A2, SLC22A3) variation and response to smoking cessation therapies. The corresponding proteins are low-affinity transporters of choline, acetylcholine and monoamines, and smoking cessation pharmacotherapies expressed in multiple tissues. METHODS We selected 7 common polymorphisms for mega-regression analysis. W...
From: Department of Gastroenterology, Amrita Institute of Medical Sciences, Amrita Lane, Elamakkara P. O., Cochin 682 026, India. Correspondence: Department of Gastroenterology, Amrita Institute of Medical Sciences, Amrita Lane, Elamakkara P. O., Cochin 682 026, Kerala, India. E-mail: [email protected] Case 1 A 48 year-old male who was known case of systemic arterial hypertension on medication...
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