نتایج جستجو برای: bds
تعداد نتایج: 1367 فیلتر نتایج به سال:
Transcallosal excitation and inhibition have been theorized based on the effect of callosotomy on intractable epilepsy and dichotic listening research, respectively. We studied bilateral interaction of cortical auditory neurons and found that this interaction consisted of focused facilitation and widespread lateral inhibition. The frequency modulated (FM)-FM area of the auditory cortex of the m...
The GNSS derived Zenith Tropospheric Delay (ZTD) plays today a very critical role in meteorological study and weather forecasts, as ZTDs of thousands of GNSS stations are operationally assimilated into numerical weather prediction models. Recently, the Chinese BeiDou Navigation Satellite System (BDS) was officially announced to provide operational services around China and its neighborhood and ...
OBJECTIVE To investigate the association between birth defects and dietary nutrient intake in a high risk area of China. METHODS A dietary survey was performed and serum folic acid was measured in women whose pregnancy was affected by neural tube defects (NTDs) or unaffected by any birth defects (BDs) in Zhongyang and Jiaokou Counties in Shanxi Province of China. RESULTS The local average c...
AIMS The objective of this study was to examine brain activity related to visual attention processes in youths who had maintained a binge drinking (BD) pattern of alcohol consumption for >2 years. METHODS The participants were 57 university students (26 binge drinkers: BDs) with no personal or family history of alcoholism or psychopathological disorders in first-degree relatives. Event-relate...
Kidneys from nondirected donors (NDDs) have historically been allocated directly to the deceased donor wait list (DDWL). Recently, however, NDDs have participated in kidney exchange (KE) procedures, including KE 'chains', which have received considerable media attention. This increasing application of KE chains with NDD participation has occurred with limited ethical analysis and without ethica...
Three-dimensional water vapor can be reconstructed from Global Navigation Satellite System (GNSS) observations, which can study 3-D profile variations of atmospheric water vapor and climate. However, there is a large uncertainty of water vapor tomography from single GPS system observations due to limited satellites. The rapid development of multi-GNSS, including China’s Beidou Navigation Satell...
Combustion of sulfur components of fossil fuels such as oil causes the emission of SO2 in the atmosphere and lead to the formation of acidic rain in the environment. The conventional approach for desulfurization of fossil fuels is the chemical procedure of hydrodesulfurization (HDS). However, this method has low efficiency for desulfurization of ring components of sulfur such as dibenzothio...
بررسی غیرخطی بودن فرآیند جریان رودخانه با استفاده از آزمون BDS (مطالعه موردی: رودخانه شهرچای ارومیه)
فرآیند جریان رودخانه یکی از سیستمهایی است که در مقیاس زمانی و مکانی مکانیسم غیر خطی در آن میتواند حاکم باشد. در بسیاری از مدل‌های برازشی بر روی سریهای جریان رودخانه از مدل‌های خطی استفاده میشود در حالی که معمولا فرآیند حاکم بر جریان رودخانه بیشتر ماهیت غیرخطی دارد. با این وجود نوع غیرخطی حاکم بر فرآیند سیستم رودخانه و شدت آن در مقیاس‌های زمانی مختلف مشخص نیست. فرآیند جریان رودخانه شهرچای ار...
Kilit denetim konuları (KDK), bağımsız sürecinde denetçilerin üzerinde odaklanacağı konular arasında en fazla önem arz eden ifade etmektedir. KDK, 09.03.2017 tarih ve 30002 Sayılı Resmi Gazete’de yayımlanan “BDS 701: Denetim Konularının Bağımsız Denetçi Raporunda Bildirilmesi (BDS 701)” isimli standartta düzenlenmiştir. Bu düzenlemeyle, gerek hisseleri borsada işlem gören işletmelerin gerekse d...
Using Monte Carlo simulations and published radial velocity surveys we have constrained the frequency and separation (a) distribution of very low mass star (VLM) and brown dwarf (BD) binary systems. We find that simple Gaussian extensions of the observed wide binary distribution, with a peak at 4 au and 0.6 < σlog(a/au) < 1.0, correctly reproduce the observed number of close binary systems, imp...
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