نتایج جستجو برای: 1234
تعداد نتایج: 581 فیلتر نتایج به سال:
Abstract Electrospun scaffolds with diameter fibers compared to those in the extracellular matrix were produced poly(lactic acid) (PLA) and non-denatured collagen from bovine dentin (DCol). DCol was obtained through an improved version of Longin method by acid erosion hydroxyapatite roots teeth a 2-year-old cattle. The characterized energy dispersive X-ray spectroscopy (EDS), carbon, nitrogen, ...
In a tubular photobioreactor, microalgae cells obscure one another (Self-shading), leading to the at bottom of tube getting less light. The objective this research was design and develop Tubular Photobioreactor with 93.5 liters for cultivation. experiments had two steps. first step designing solar receiver by inserting fin into each wall as follows: 12-34, 1-2-3-4, 1234, 13-24. Then, FLUENT sof...
This paper aims to critically analyze the IEEE Std 1234-19 and other power cable fault-finding technical guides produced by leading industries assess their applicability in practice underground low voltage distribution network (LVDN). The analysis reveals that there is no clear distinction between techniques procedures of LV MV/HV systems. Innumerable branching residential loads LVDN makes them...
به دلیل سمیت کادمیوم و خاصیت تجمعی آن در بافت های موجودات زنده، توجهات زیادی نسبت به آن وجود دارد . در این پژوهش حذف کادمیوم توسط خاک رنگ بر مستعمل و دورریز صنایع روغن نباتی پس از آماده شدن به روش حرارتی در کوره خلا، مورد بررسی قرار گرفت. جاذبی که به این ترتیب آماده شد قابلیت جذب یون های فلزی مانند کادمیوم را در محیط های آبی دارد. همچنین چگونگی بهبود شرایط عملکرد این جاذب مورد بررسی قرار گرفته ...
در این تحقیق، سنتز نانوذرات منگنز- اکسید روی ، آهن- اکسید روی به روش ترسیب شیمیایی هم‌زمان و بررسی ویژگی-های ساختاری و مورفولوژیکی نانوذرات حاصله با استفاده از طیف مادون قرمز فوریه، پراش اشعه X و میکروسکوپ الکترونی عبوری صورت گرفت. اثرات ضد میکروبی نانوذرات در برابر باکتری شیگلا فلکسنری (PTCC 1234) توسط روش تعیین قطر هاله عدم رشد سنجیده شد. میزان هم افزایی نانوذرات با دو ماده پراکسید هیدروژن و ...
The article presents the results of a study on preparation and use faba bean waste potato peel pellets for energy purposes. Physical mechanical characteristics (moisture, density, ash content) were investigated. largest fraction flour was formed sieve with 1 mm holes: waste—28.2 ± 2.02 g, peels—29.09 0.73 g. For this experiment, samples taken by mixing (four variants) in ratio 1:1; 1:2; 1:3; 1:...
Hypothetical (HyP) and conserved HyP genes account for >30% of sequenced bacterial genomes. For the sulfate-reducing bacterium Desulfovibrio vulgaris Hildenborough, 347 of the 3634 genes were annotated as conserved HyP (9.5%) along with 887 HyP genes (24.4%). Given the large fraction of the genome, it is plausible that some of these genes serve critical cellular roles. The study goals were to d...
BACKGROUND Gastric reflux can reach into the upper airway, inducing cellular damage in the epithelial lining. This condition is believed to be a risk factor for development of laryngopharyngeal squamous cell carcinoma (LPSCC), although the literature is conflicting. METHODS To better clarify this relationship, we assessed the association of self-reported heartburn history and medication use a...
The receptor tyrosine kinase c-Met is implicated in oncogenesis and is the target for several small molecule and biologic agents in clinical trials for the treatment of cancer. Binding of the hepatocyte growth factor to the cell surface receptor of c-Met induces activation via autophosphorylation of the kinase domain. Here we describe the structural basis of c-Met activation upon autophosphoryl...
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