نتایج جستجو برای: 06ʹ n to 55
تعداد نتایج: 10848449 فیلتر نتایج به سال:
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...
Abstract Currently an internationally accepted consensus treatment for relapsed/refractory ATRT is missing. Little known about relapse patterns, prognostic factors and outcome. In a recently published cohort of 143 ATRTs from the EU-RHAB registry, progression on therapy or occurred in 64% (n=91). Previously strategies failure have been restricted to individual, mostly clinically guided, attempt...
Acidithiobacillus ferrooxidans (A. ferrooxidans, formerly Thiobacillus ferrooxidans) is the Gram-negative, acidophilic, chemolithoautotrophic bacterium that obtains its energy from the oxidation of ferrous iron, elemental sulphur, or partially oxidized sulphur compounds (Leduc and Ferroni, 1994; Rohwerder et al., 2003), even hydrogen or formate in anoxic conditions (Drobner et al., 1990; Pronk ...
BACKGROUND Left ventricular noncompaction (LVNC) describes deep trabeculations in the left ventricular (LV) endocardium and a thinned epicardium. LVNC is seen both as a primary cardiomyopathy and as a secondary finding in other syndromes affecting the myocardium such as neuromuscular disorders. The objective of this study is to define the prevalence of LVNC in the Duchenne Muscular Dystrophy (D...
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در این پایان نامه تلاش شد تا امکان تولید رادیوایزوتوپ آهن-55 که پیش از این در مرکز تحقیقات کشاورزی هسته ای کرج تولید شده بود، به وسیله کد مونت کارلوی mcnpx شبیه سازی شده تا میزان مطابقت داده های تجربی با نتایج به دست آمده از کد ارزیابی گردد. با استفاده از قابلیت های فراوان کد، مطالعه دقیق و کم هزینه تولید این رادیوایزوتوپ بررسی شده است. در این تحقیق ابتدا با استفاده از کدهای alice، alice/ash و ...
Previous studies have revealed an increased fractional anisotropy and greater thickness in the anterior parts of the corpus callosum in meditation practitioners compared with control subjects. Altered callosal features may be associated with an altered inter-hemispheric integration and the degree of brain asymmetry may also be shifted in meditation practitioners. Therefore, we investigated diff...
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