نتایج جستجو برای: sqs
تعداد نتایج: 220 فیلتر نتایج به سال:
Fractal compression schemes do not t into the standard transform coder paradigm and have proven diicult to analyze. The theory of iterated function systems motivates a broad class of fractal schemes but does not give much guidance for their implementation. We introduce a wavelet-based framework for analyzing fractal block coders which simpliies these schemes considerably. We show that fractal b...
گیاه درمنه (Artemisia annua) به دلیل تولید آرتمیزنین با خاصیتهای مختلف مانند مقابله با پلاسمودیمهای عامل بیماری مالاریا و درمان انواع سرطانها، دارای اهمیت ویژه میباشد. در این مطالعه به منظور بررسی تاثیر الیسیتور نانوکبالت و نانو کیتوزان روی میزان بیان ژنهای کلیدی مسیر بیوسنتزی آرتمیزنین (SQS و DBR2) و مقدار تولید این ماده در سوسپانسیون سلولی درمنه از غلظتهای 25/0، 5/2 و 5 میلی گرم در لیت...
In gas detectors with UV absorbing gas mixture, the Self-Quenched Streamer (SQS) mode can be achieved following the proportional mode, which leads to appear the light column. In this study, the design, simulation and construction of three micro pattern gas-detector, THGEM, with different geometric dimensions are presented. Moreover, the ability of operation in SQS mode to determine incident ray...
Trypanosomatid parasites are the causative agents of many neglected tropical diseases and there is currently considerable interest in targeting endogenous sterol biosynthesis in these organisms as a route to the development of novel anti-infective drugs. Here, we report the first x-ray crystallographic structures of the enzyme squalene synthase (SQS) from a trypanosomatid parasite, Trypanosoma ...
A Steiner quadruple system of order v is a 3 − (v, 4, 1) design, and will be denoted SQS(v). Using the classification of finite 2-transitive permutation groups all SQS(v) with a flag-transitive automorphism group are completely classified, thus solving the ”still open and longstanding problem of classifying all flag-transitive 3− (v, k,1) designs” (cf. [5, p. 273], [6]) for the smallest value o...
Problem-based and case-based learning are well-known inquiry-based pedagogies. 3 We propose a new inquiry-based approach called systems-questions-solutions (SQS) 4 that combines the two more general approaches. SQS is based on proven educational 5 principles plus general systems theoretic approaches to systems. This approach natu6 rally introduces verification and validation into the educationa...
The electronic structures and structural properties of body-centered cubic Ti-Mo alloys were studied by first-principles calculations. The special quasirandom structures (SQS) model was adopted to emulate the solid solution state of the alloys. The valence band electronic structures of Ti-Mo and Ti-Mo-Fe alloys were measured by hard x-ray photoelectron spectroscopy. The structural parameters an...
To get some insight into the regulatory mechanisms controlling the sterol branch of the mevalonate pathway, tobacco (Nicotiana tabacum cv Bright Yellow-2) cell suspensions were treated with squalestatin-1 and terbinafine, two specific inhibitors of squalene synthase (SQS) and squalene epoxidase, respectively. These two enzymes catalyze the first two steps involved in sterol biosynthesis. In hig...
The biosynthesis of sterols is a major route for the development of antitrypanosomals. Squalene synthase (SQS) catalyzes the first step committed to the biosynthesis of sterols within the isoprenoid pathway, and several inhibitors of the enzyme have selective antitrypanosomal activity both in vivo and in vitro. The enzyme from Trypanosoma cruzi is a 404-amino-acid protein with a clearly identif...
OBJECTIVE To evaluate the reliability and agreement of semi-quantitative scoring (SQS) and quantitative scoring (QS) systems. To compare the two types of scoring system and investigate the construct validity for both scoring systems. METHODS A total of 46 RA patients (median disease duration of 6.5 years) were enrolled in the study. They were investigated with colour Doppler ultrasound using ...
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