نتایج جستجو برای: تجزیههای حرارتی dta tga

تعداد نتایج: 21363  

Journal: :Advanced pharmaceutical bulletin 2013
Ali Kamal Attia Mona Mohamed Abdel-Moety

PURPOSE Thermal analysis (TGA, DTG and DTA) and differential scanning calorimetry (DSC) have been used to study the thermal behavior of terazosin hydrochloride (TER). METHODS Thermogravimetric analysis (TGA/DTG), differential thermal analysis (DTA) and differential scanning calorimetry (DSC) were used to determine the thermal behavior and purity of the used drug. Thermodynamic parameters such...

2005
L. Gunnar Eriksson Björn Kjellström

The solid residue from wood-based ethanol production has a low ash content and high heating value, making it interesting for combustion applications, e.g. small-scale appliances and gas turbines. Combustion and gasification properties have been studied using thermogravimetric analysis (TGA) and differential thermal analysis (DTA). Char combustion rate data obtained could be used in combustion s...

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2015
B C Hemaraju M A Ahlam N Pushpa K M Mahadevan A P Gnana Prakash

4-Nitrophenyl hydrazone single crystals were grown by slow evaporation of solvent method using acetone as a solvent. The grown crystals were subjected to various characterizations such as X-ray diffraction studies, UV-visible studies, thermogravimetric analysis and differential thermal analysis (TGA/DTA) and second harmonic generation (SHG). The cell parameters were calculated by using single c...

Journal: :Environmental science & technology 2004
Michael J McKelvy Andrew V G Chizmeshya Jason Diefenbacher Hamdallah Béarat George Wolf

As compared with other candidate carbon sequestration technologies, mineral carbonation offers the unique advantage of permanent disposal via geologically stable and environmentally benign carbonates. The primary challenge is the development of an economically viable process. Enhancing feedstock carbonation reactivity is key. Heat activation dramatically enhances aqueous serpentine carbonation ...

2010
Karol Malecha Thomas Maeder Caroline Jacq Peter Ryser

A novel formulation for thick-film graphite sacrificial pastes is studied in this paper. It is composed of coarse graphite powder (grain size: 25 μm), dispersed in a vehicle consisting of polyvinyl alcohol (PVA) dissolved in a propylene glycol (PG) – glycerol (G) – water mix, which is not aggressive to thin LTCC sheets. The presented sacrificial paste has been successfully applied for fabricati...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه محقق اردبیلی - دانشکده علوم پایه 1392

در کار حاضر، ابتدا دی¬آمین آروماتیک جدید bamo حاوی حلقه 4،3،1- اگزادیازول سنتز شد. سپس برای اصلاح سدیم مونت موریلونیت ابتدا با استفاده از لیتیوم¬کلراید یون¬های لیتیوم جایگزین یون¬های سدیم گردیدند. در مرحله بعدی نمک هیدروکلراید دی¬آمین bamo به عنوان یک اصلاح کننده آروماتیک و پایدار از نظر حرارتی، در واکنش تبادل یونی با لیتیوم مونت¬موریلونیت به کار رفت. تغییرات فاصله بین¬لایه¬ای و پایداری حرارتی ...

2017
Claudio Larosa Niranjan Patra Marco Salerno Lara Mikac Remo Merijs Meri Mile Ivanda

A polymer nanocomposite was produced by ultrasonic-assisted dispersion of multiwalled carbon nanotubes (MWCNTs) in a polycarbonate matrix using p-xylene and dichloromethane as the solvents. The filler loading was varied from 1 to 3 wt % in order to examine the effect of MWCNTs on the structure and properties of the composites. The nanocomposites were characterized by DSC, DTA, TGA, UV-vis, FTIR...

2015
Mahendra Kumar Trivedi Gopal Nayak Khemraj Bairwa Snehasis Jana

Potato Micropropagation Medium (PMM) is the growth medium used for in vitro micropropagation of potato tubers. The present study was intended to assess the effect of biofield energy treatment on the physical, thermal and spectroscopic properties of PMM. The study was attained in two groups i.e. control and treated. The control group was remained as untreated, while the treated group was receive...

Journal: :Journal of Mining and Metallurgy, Section B: Metallurgy 2002

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران 1389

در این تحقیق، پخت و تخریب حرارتی اپوکسی رزین با 1و3 پروپان دی آمین به عنوان عامل سخت کننده و همچنین ترکیب آن با نانوآلومینا بررسی شد. اثر نانوآلومینا بر روی پخت اپوکسی رزین با استفاده از روش dsc پویا بررسی شد. سپس نانوکامپوزیت اپوکسی رزین و اپوکسی رزین توسط روش های xrd و sem مشخصه یابی شدند. به کمک روش tga پایداری حرارتی نانوکامپوزیت اپوکسی رزین و اپوکسی رزین مورد ارزیابی قرار گرفت. انرژی فعا...

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