نتایج جستجو برای: thermogravimetric analysis
تعداد نتایج: 2824856 فیلتر نتایج به سال:
Cement concrete is the most extensively used construction materials across world. The environmental unfriendliness attached to production of cement which one major constituents demands persistent attention and wide use pozzolanic material as partial replacement in looks be a promising supplement for production. Based on past research works, metakaolin was selected its compressive strength therm...
Marine lubricating oil (LO) is deteriorated by contaminants—especially marine gas (MGO), which invariably mixed during its usage—that can damage engine performance. This study investigates a method for determining the content of MGO in oil. Weight loss from MGO-containing lubricant was evaluated through thermogravimetric analysis (TGA), and standard calibration curve plotted to establish correl...
ترکیب تترا برمو فتالیمیدو-1،2،4-تری آزولیدین-3،5-دی اون از واکنش تترا برمو فتالیک انیدرید با یورازین در حلال -n,nدی متیل استامید (دی مک) ساخته شد. ساختار مونومر سنتز شده با استفاده از طیف سنجی مادون قرمز و رزونانس مغناطیسی هسته ای شناسایی و تایید گردید. ترکیب تترا برمو فتالیمیدو-1،2،4-تری آزولیدین-3،5-دی اون به عنوان مونومر جدید با فنیل-ایزوسیانات واکنش داده شده، محصول، به عنوان ساختار مدل ...
Thermal behaviors and combustion kinetics of Thai lignite with different SO₃-free CaO contents were investigated. Nonisothermal thermogravimetric method was carried out under oxygen environment at heating rates of 10, 30, and 50°C min⁻¹ from ambient up to 1300°C. Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS) methods were adopted to estimate the apparent activation energy (E) for the...
The hydration of actin was studied by differential scanning calorimetry between -30 degrees C and 30 degrees C and by thermogravimetric analysis. The differential scanning calorimetry provided the freezable water content of G- and F-actin as a function of concentration, and the thermogravimetric analysis measured the total water content. The difference between the two yielded the nonfreezable w...
This work reports the thermodynamic characterizations of organometallic species as a vehicle for the rapid separation of volatile nuclear fission products via gas chromatography due to differences in adsorption enthalpy. Because adsorption and sublimation thermodynamics are linearly correlated, there is considerable motivation to determine sublimation enthalpies. A method of isothermal thermogr...
Um planejamento fatorial foi aplicado para avaliar o conteúdo de cinzas em mel pela termogravimetria bem como para estabelecer as condições de análise ótimas que produzem conteúdos de cinzas em concordância com aqueles obtidos pelo método oficial (gravimetria). Os efeitos de taxa de aquecimento e papel de fibra de vidro foram significativos bem como o efeito de interação entre estas variáveis. ...
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