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تعداد نتایج: 1079033 فیلتر نتایج به سال:
The rapid, degenerate 1,2-hydride shift in 2,3-dimethyl-2-butyl cation in stable solution in SbF5/ S02C1F was perturbed by deuterium and 13C leading to splittings observed by 13C NMR spectros copy over a range of temperatures. Accurate values for equilibrium isotope effects were obtained from these data. Theoretical calculations of the equilibrium isotope effects were performed using the Gauss...
1 Yale School of Medicine, New Haven, CT, United States, 2 Department of Therapeutic Radiology, Yale School of Medicine, New Haven, CT, United States, 3 Yale Cancer Center, Yale School of Medicine, New Haven, CT, United States, 4 University of Connecticut School of Medicine, Farmington, CT, United States, 5 Department of Biostatistics, Yale School of Public Health, New Haven, CT, United States,...
1 Department of Genetics, Yale School of Medicine, New Haven, Connecticut, United States of America, 2 Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut, United States of America, 3 Department of Therapeutic Radiology, Yale School of Medicine, New Haven, Connecticut, United States of America, 4 Yale Cancer Center, New Haven, Connecticut, United States ...
Considering the Tehran stock exchange’s status after the Covid-19 pandemic; it is essential to assess the role of different assets as a risk hedge and safe haven of the stock market during the pandemic. In this study, the trend of the gold and US dollar was evaluated and compared using EGARCH and quantile regression methods before (2018/6/19-2020/2/19) and after Covid-19 (2020/2/23-2021/10/12)....
Departments of Psychiatry and Neuroscience, Yale University School of Medicine, New Haven, Connecticut (Drs Krystal, Petrakis, O’Malley, Krishnan-Sarin, Pearlson, and Yoon); Psychiatry Services, VA Connecticut Healthcare System, West Haven, Connecticut (Drs Krystal, Petrakis, and Yoon); Behavioral Health Services, Yale-New Haven Hospital, New Haven, Connecticut (Drs Krystal, Petrakis, and Yoon)...
D. Coman, L. Jiang, F. Hyder, and K. Behar Department of Diagnostic Radiology, Yale University, New Haven, CT, United States, Quantitative Neuroscience with Magnetic Resonance (QNMR), Yale University, New Haven, CT, United States, Departments of Diagnostic Radiology and Biomedical Engineering, Yale University, New Haven, CT, United States, Department of Psychiatry, Yale University, New Haven, C...
P. Herman, B. G. Sanganahalli, H. Blumenfeld, and F. Hyder Diagnostic Radiology, Yale University, New Haven, CT, United States, Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary, Neurology, Yale University, New Haven, CT, United States, Neurobiology, Yale University, New Haven, CT, United States, Biomedical Engineering, Yale University, N...
a r t i c l e i n f o We evaluate the role of gold and other precious metals relative to volatility (Volatility Index (VIX)) as a hedge (negatively correlated with stocks) and safe haven (negatively correlated with stocks in extreme stock market declines) using data from the US stock market. Using daily data from November 1995 to November 2010, we find that gold, unlike other precious metals, s...
Aortic Institute at Yale-New Haven Hospital, Yale University School of Medicine, New Haven, CT, USA; Section of Vascular and Endovascular Surgery, Yale-New Haven Hospital, CT, USA; Department of Surgical Diseases #2, Kazan State Medical University, Kazan, Russia Correspondence to: John A. Elefteriades, MD. Aortic Institute at Yale-New Haven, Yale University School of Medicine, Clinic Building C...
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