نتایج جستجو برای: ellman method
تعداد نتایج: 1630219 فیلتر نتایج به سال:
Organophosphate (OPs) compounds are widely used in intensive agriculture to improve production, protect crops and control diseases vectors. The main mechanism of toxicity of OPs is the inhibition of the Cholinesterase enzymes. In this study the acetylcholinestrase (AChE), butyrylcholinesterase (BChE) and specific acetylcholinestrase (SAChE) activities as potential biomarkers of exposure to OPs ...
Background and Objective: The acetylcholinesterase (AChE) is an enzyme that takes responsibility for substrate hydrolysis of acetylcholine, and it is seen structurally, as monomer, dimer and tetramer units. The objective of this study was to examine and compare the inhibitory effect of the two drugs, physostigmine and p hydrochloride in vitro. Materials and Methods: In this study, the in...
Alzheimer hastalığı (AH), zamanla beyin hücrelerinin ölümüne bağlı olarak bilişsel işlevlerde azalma, hafıza kaybı ve bunama ile ilişkilendirilmiştir. hastalığının tedavisinde sınırlayıcı uygulamaların mevcut oluşu, hastalığın sağlık harcamalarında kanser kalp hastalıklardan sonra dünyada üçüncü sırada oluşu araştırmacıları AH üzerinde erken evrede tanıma yeni tedavi yöntemlerine yönlendirmekte...
تحقیقات اخیر روی روشهای عددی، بر ایده استفاده از روشهای بدون شبکه{meshfree methods} برای حل عددی معادلات دیفرانسیل با مشتقات جزئی تاکید می کند. یکی از ویژگی های رایج همه روشهای بدون شبکه، توانایی آنها در ساخت تقریب تابع، تنها با استفاده از اطلاعاتی در یک مجموعه از داده های پراکنده می باشد. تعدادی از روشهای بدون شبکه عبارتند از: روش هیدرودینامیکهای ذره ی هموار{smooth particle hydrodynamics ...
in this thesis a calibration transfer method is used to achieve bilinearity for augmented first order kinetic data. first, the proposed method is investigated using simulated data and next the concept is applied to experimental data. the experimental data consists of spectroscopic monitoring of the first order degradation reaction of carbaryl. this component is used for control of pests in frui...
Objective(s): Methamphetamine (METH) is a powerful stimulant drug that directly affects the brain and induces neurological deficits. B12 is a water-soluble vitamin (vit) that is reported to attenuate neuronal degeneration. The goal of the present study is to investigate the effect of vitamin B12 on METH’s neurodegenerative changes.Materials and Methods: Two groups of 6 animals received METH (10...
Thiên niên kiện lá lớn đã được sử dụng trong y học cổ truyền từ lâu đời. Các đặc điểm vi phẫu và thành phần bột dược liệu của loài này vẫn chưa mô tả một cách toàn diện. Nghiên cứu phẫu, soi bột, đánh giá hoạt tính ức chế acetylcholinesterase chống oxy hoá lớn. bằng phương pháp kính hiển vi. Hoạt enzyme Ellman hóa thực hiện trên hình loại bỏ gốc tự do 2,2-diphenyl-1-picrylhydrazyl (DPPH). Đây l...
هدف از ارایه این پایان نامه بررسی روشی است برای حل معادلات دیفرانسیل غیرخطی که شکل عمومی آنها بصورت lu+nu=g(t) می باشد. در این معادله n یک عملگر غیرخطی و l یک عملگر دیفرانسیلی خطی می باشد. این روش تحت عنوان روش تجزیه (آدومیان) بررسی می شود. در این روش u رابه صورت u تجزیه می کنیم. همچنین ترکیب غیر خطی nu را بصورت an (u , u , ... , u ) نمایش می دهیم که a ها چند جمل...
a simple, rapid and low-cost scanner spectroscopy method for the glucose determination by utilizing glucose oxidase and cdte/tga quantum dots as chromoionophore has been described. the detection was based on the combination of the glucose enzymatic reaction and the quenching effect of h2o2 on the cdte quantum dots (qds) photoluminescence.in this study glucose was determined by utilizing glucose...
This study was undertaken to evaluate anticholinesterase activity of some benzimidazole derivatives due to their biological importance. Previously synthesized 14 benzimidazole compounds were used in biological studies. Inhibitory activities of related compounds on Acetylcholine esterase (AChE, E.C.3.1.1.7 from Electric Eel) enzyme have been determined by a modified Ellman’s colorimetric method....
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