نتایج جستجو برای: آنالیز TGA
تعداد نتایج: 47186 فیلتر نتایج به سال:
تحقیق حاضر با هدف تجزیه و تحلیل حرارتی چوبهای فورفوریلدار شده حاصل از گونه راش (Fagus orientalis) و نراد (Abies alba) انجام گرفت. در این راستا آزمونهها با دو میزان متفاوت فورفوریلاسیون در قالب سطح پایین (نراد 14% و راش 20%) و سطح بالا (نراد 38% و راش 65%)، اشباع و با نمونههای شاهد مقایسه شدهاند. نتایج نشان داد با فورفوریلاسیون و افزایش سطح آن، تغییراتی در نمودارهای TGA وDTA رخ میدهد. در ن...
در این پژوهش، تجزیه گرمایی آمونیوم پرکلرات با افزودن نانوذرههایcuo تجاری بررسی شده است. نانوذرههای cuo با روش های مشخصه یابی پراش اشعه ایکس (xrd) و میکروسکوپ الکترونی عبوری (tem) بررسی شد. تصویر آنالیز tem نشان می دهد که نانوذرههای cuo دارای مورفولوژی به تقریب کروی هستند. فعالیت کاتالیستی نانوذرههای cuo بر تجزیه گرمایی آمونیوم پرکلرات (ap) با آنالیزهای گرمایی dsc و tga بررسی شد، که نتیجهها...
BACKGROUND Thioglycolic acid (TGA) is widely used in the hairdressing industry, which mostly caters to women. Recently, TGA has been reported to impair several organs, especially reproductive ones such as testes and ovaries. The reproductive toxicity of TGA on females has become an issue that cannot be neglected. METHODOLOGY/PRINCIPAL FINDINGS In the present work, superovulated female mice we...
BACKGROUND/AIM Transient global amnesia (TGA) could be related to acute ischemic disturbances in mesial parts of temporal lobes, which are important for memory. Incompetence of internal jugular vein (IJV) valve with venous congestion causes venous microthrombosis of hippocampus. The aim of this study was to investigate the frequency of IJV valve incompetence, as well as other hemodynamic and st...
BACKGROUND AND PURPOSE Transient global amnesia (TGA) is a stereotypic condition characterized by anterograde and retrograde amnesia that typically resolves within 24 hours. The pathophysiology of TGA is still unclear. We noted that patients hospitalized with TGA tend to appear in seasonal clusters, and decided to investigate this phenomenon. METHODS Every patient with acute presentation of a...
Following an episode of typical transient global amnesia (TGA), a female patient reported similar clinical attacks in 2 maternal aunts. Prior reports of familial TGA are few, and no previous account of affected relatives more distant than siblings or parents was discovered in a literature survey. The aetiology of familial TGA is unknown. A pathophysiological mechanism akin to that in migraine a...
The pathophysiology of transient global amnesia (TGA) is still speculative. Recently, diffusion-weighted image (DWI) of magnetic resonance imaging (MRI) documented tiny lesions in the hippocampus of patients with TGA in the acute stage. Most studies reported unilateral lesions on MRI. We present one patient of TGA with high signal-intensity lesions in bilateral hippocampus on DWI at the acute s...
BACKGROUND Fullerenes are molecules being investigated for a wide range of therapeutic applications. We have shown previously that certain fullerene derivatives (FDs) inhibit mast cell (MC) function in vitro, and here we examine their in vivo therapeutic effect on asthma, a disease in which MCs play a predominant role. OBJECTIVE We sought to determine whether an efficient MC-stabilizing FD (C...
Transposition of the great arteries or TGA is a potentially fatal congenital heart malformation where the pulmonary artery and the aorta are switched. The switch means that the aorta, which normally carries oxygenated blood, carries deoxygenated blood. There are two types of the malformation, d-TGA where no oxygen reaches the body and l-TGA where some oxygenated blood circulates. In the US, the...
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