نتایج جستجو برای: thermogravimetric analysis

تعداد نتایج: 2824856  

Journal: :FUOYE Journal of Engineering and Technology 2022

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...

Journal: :Journal of Marine Science and Engineering 2021

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...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی شاهرود - دانشکده شیمی 1391

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 ...

2013
Pakamon Pintana Nakorn Tippayawong

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...

Journal: :Investigative ophthalmology & visual science 1991
S Kakar F A Bettelheim

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...

2017
Shayan Shahbazi S Adam Stratz John D Auxier Daniel E Hanson Matthew L Marsh Howard L Hall

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...

2004
Maria L. Felsner Cristiane B. Cano Jivaldo R. Matos Lígia B. de Almeida-Muradian Roy E. Bruns

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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