نتایج جستجو برای: free variation

تعداد نتایج: 799819  

2000
Sean B. Majoy Paul D. Heideman

In laboratory-bred rodent populations, intraspecific variation in circadian system organization is a known cause of individual variation in reproductive photoresponsiveness. The authors sought to determine whether circadian system variation accounted for individual variation in reproductive photoresponsiveness in a single, highly genetically variable population of Peromyscus leucopus recently d...

2016
Zhuo Liu Ye Sun Zhuolu Zhang Lei Chen Nan Hong

Usually, coronary computed tomography angiography (CCTA) is performed during breath-holding to reduce artifact caused by respiration. The objective of this study was to evaluate the feasibility of free-breathing CCTA compared to breath-holding using CT scanner with wide detector. To evaluate the feasibility of CCTA during free-breathing using a 256-MDCT. In 80 patients who underwent CCTA, 40 we...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1371

we describe here a suitable approach for the synthesis of n-unsubstituted monocyclic b-lactams under mild reaction conditions by the annelation of imines with substituted acetylchlorides. in this method the reaily available phtalimidoacetyl chloride were allowed to react with - dibenzylideneiminotoluene (hydrobenzamide) in the presence of an equimolar amount of triethylamine in refluxing toluen...

2004
P. Misra T. K. Sharma H. Kissel L. M. Kukreja

We have studied the photoluminescence of highly transparent and c-axis oriented ZnO thin films grown on (0001) sapphire by Pulsed Laser Deposition at different temperatures ranging from 10K to 300K. We observed temperature dependent recombination from free excitons, bound excitons and LO phonon assisted free and bound excitonic transitions. The energies of free excitonic transitions are close t...

2013
Wei Wang Jian Bin Li Hong Guang Hu Feng Xiang Li Min Xu Tao Sun Jie Lu

PURPOSE The purpose of this study was to explore the correlation between the respiration-induced target motion and volume variation with the dosimetric variance on breast and organ at risk (OAR) during free breathing. METHODS AND MATERIALS After breast-conserving surgery, seventeen patients underwent respiration-synchronized 4DCT simulation scans during free breathing. Treatment planning was ...

2004
Sagar S. Sabade D. M. H. Walker

Extending the useful life of IDDQ test to deep submicron technologies has been a topic of interest in recent years. IDDQ test loses its effectiveness as the signal to noise ratio degrades due to rising background current and fault-free IDDQ variance. Defect detection using IDDQ test requires separation of deterministic sources of variation from defective current. Several methods that use determ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید