نتایج جستجو برای: bis dipolarophiles
تعداد نتایج: 48040 فیلتر نتایج به سال:
A general method for the preparation of bis-ureas from bis(o-nitrophenyl) carbonate has been developed. Directional urea synthesis is achieved by sequential amine addition to bis(o-nitrophenyl) carbonate in two steps: in the first step bis(o-nitrophenyl) carbonate is reacted with benzylamine to form benzyl-o-nitrophenyl carbamate; in the second step the carbamate is reacted with a variety of di...
Differences between different style-depressed mothers, intrusive and withdrawn, were examined by the use of the Behavioral Inhibition and Activation Scales (BIS/BAS) and EEG activity from the mid-frontal and parietal regions. Analyses revealed that withdrawn mothers had left frontal EEG hypoactivation, higher Behavior Inhibition (BIS), and lower Behavior Activation (BAS) scores than the intrusi...
The [3+2]-cycloaddition of (trimethylsilyl)diazomethane (7) with 9H-fluorene-9-thione (1) at –60°C yields the spirocyclic 2,5-dihydro-5-trimethylsilyl-1,3,4-thiadiazole 10, which eliminates nitrogen at room temperature to give the 1,4-dithiane derivative 13 by dimerization of the intermediate fluorenethione (trimethylsilyl)methanide (11). This thiocarbonyl ylide can be trapped by 1 to give the ...
BACKGROUND In general, measuring the level of consciousness in neurological patients is important. To assess the patient's mental status, the Glasgow Coma Scale (GCS) and the level of consciousness (drowsiness, stupor, and coma) have been used in clinical situations. The aim of the present study was to identify the correlation between bispectral index (BIS) and level of consciousness in brain i...
While extant business intelligence systems (BIS) adoption research focused mainly on adoption of BIS in large-sized organizations, our understanding about the adoption determinants and the process within small and medium enterprises (SME) is still limited. The aim of our research is to identify SME-specific determinants of BIS adoption at firm level that will guide the development and testing o...
The chiral carbene bis[bis(R-1-phenylethyl)amino]cyclopropenylidene 2 and its dicarbene-silver complex [Ag(2)2]BF4 (3) have been isolated in good yields from the reactions of bis[bis(R-1-phenylethyl)amino]cyclopropenylium tetrafluoroborate (1)BF4 with potassium bis(trimethylsilyl)amide or with Ag2O, respectively; the molecular structures of (1)ClO4, 2 and 3 have been determined by X-ray diffrac...
اغلب کامپوزیت ها مخلوط فیزیکی مواد هستند که جسم توقویت شده ای را نتیجه می دهند. هدف برتر این پروژه ساخت مواد دندانی از نوع کامپوزیت می باشد. کامپوزیتهای دندانی را غالبا با عناوین رزین های پرشده رزین کامپوزیت می نامند. این مواد در اواسط دهه 1960 شناخته شدند اصطلاح کامپوزیت دندانی به شکل مرسوم بیانگر مخلوطی از شیشه های سیلیکات با مونومرهای آکریلی است که پلیمریزاسیون آنها هنگام اختلاط با شیشه آغاز...
BACKGROUND Awareness during anesthesia is a serious complication with potential long-term psychological consequences. Use of the bispectral index (BIS), developed from a processed electroencephalogram, has been reported to decrease the incidence of anesthesia awareness when the BIS value is maintained below 60. In this trial, we sought to determine whether a BIS-based protocol is better than a ...
Glioblastoma stem cells (GSCs) are a subpopulation of highly tumorigenic and stem-like cells that are responsible for resistance to conventional therapy. Bcl-2-intreacting cell death suppressor (BIS; also known as BAG3) is an anti-apoptotic protein that is highly expressed in human cancers with various origins, including glioblastoma. In the present study, to investigate the role of BIS in GSC ...
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