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تعداد نتایج: 20440319 فیلتر نتایج به سال:
an experiment was conducted to reevaluate the digestible lysine requirement of arian male broilers by comparing the performance of chicks fed different levels of cottonseed meal (csm) on a total amino acid (aa) versus a digestible aa basis. four hundred and thirty two (432) arian male broiler chicks were allotted to 18 treatments with four repli-cates of six chicks each in a completely randomiz...
Albert is an interactive computer system for building nonassociative algebras [2]. In this paper, we suggest certain techniques for using Albert that allow one to posit and test hypotheses e ectively. This process provides a fast way to achieve new results, and interacts nicely with traditional methods. We demonstrate the methodology by proving that any semiprime ring, having characteristic 6= ...
استروژن مهمترین هورمون موثر بر رشد، تمایز و عملکرد بافت های تولید مثلی مانند تخمدان، رحم، واژن و پستان می باشد. با توجه به نقش مهم استروژن در تنظیم فرایندهای تولید مثلی، آنزیم های تولید کننده استروژن و نیز گیرنده های استروژن که عملکرد آن را واسطه گری می کنند، به عنوان مارکرهای احتمالی هم برای صفات تولیدی و هم برای صفات عملکردی در حیوانات اهلی به حساب می آیند. هدف از این مطالعه شناسایی چند شکلی ...
fish larvae have a high requirement of amino acid (aa) for energy production and growth. this study was aimed to increase knowledge of aa profile during feral carp larval ontogeny and estimate larval aa requirements. larvae were collected randomly at 1, 3, 7, 11, 15, 19, 26 and 33 days post hatch for growth and aa analysis. the composition of total aa changed significantly during ontogeny. the ...
The present work describes the construction of a new modified electrode by casting the appropriate mixture of a metallocene, which has been introduced in the experimental part, as a mediator at the surface of glassy carbon (GC) electrode. The proposed modified GC electrode was used for the determination of ascorbic acid (AA) in phosphate buffer (PB) solution (pH = 4.0). When compared to bare GC...
Background: Pekmez is an important fruit-based food of Turkish culinary culture. The aim of this study is to determine the levels of acrylamide (AA), 5-hydroxymethyl-2-furfural (HMF) and other selected parameters in grape, mulberry and carob Pekmez. Methods: AA and HMF were analyzed by Liquid Chromatography and High Performance Liquid Chromatography, respectively. Also, glucose, fructose, pH, ...
Background: Localized and extensive clinical subtypes of alopecia areata (AA) including alopecia totalis and alopecia universalis differ in genetic and immunologic aspects. Objective: Comparison of epidemiologic aspects of localized and extensive subtypes of AA. Patients and Methods: In a prospective descriptive study, 180 patients suffering from AA attending the skin clinics of Razi Hosp...
Background and purpose: Brucellosis is a systemic infection caused by gram-negative coccobacilli and facultative intracellular bacteria of the genus Brucella. Interleukin-17 is one of the important cytokines that plays a role in controlling host immune response in patients with brucellosis. The aim of this study was to investigate polymorphism of the genes encoding IL-17 in patients with brucel...
بتا لاکتوگلوبولین پروتئین اصلی آب پنیر در نشخوار کنندگان می باشد. تحقیقات نشان داده است که این پروتئین در بسیاری از نژادهای گوسفند به علت یک جایگزینی تک نوکلوتیدی (t?c)در ژن بتا لاکتو گلوبولین دارای چند شکلی می باشد. نتیجه این جایگزینی سبب می شود که در جایگاه شماره 20، بتا لاکتو گلوبولین a دارای اسید آمینه تیروزین (tac) و بتا لاکتو گلوبولین b اسید آمینه هیستیدین (cac) داشته باشد. در این پژوهش ا...
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