نتایج جستجو برای: gel combustion method

تعداد نتایج: 1741915  

Journal: :Frontier materials & technologies 2023

The paper presents the results of a detailed study process and products combustion during self-propagating high-temperature synthesis (SHS) ZnO zinc oxide powder from mixtures such common reagents as oxidizer nitrate reducing agent (fuel) glycine, well application synthesized highly dispersed submicron nanosized for phenol photocatalytic decomposition under action ultraviolet irradiation. An aq...

Journal: :Journal of Superconductivity and Novel Magnetism 2022

Abstract In this study, we presented two reliable methods, the sol–gel and autocombustion, to synthesis a high purity BiFeO 3 single phase with low calcination time using glycine as chelating agent. The glycine-autocombustion method produced either or concentrations of reactants (Bi(NO ) + Fe(NO ), while glycine-sol–gel delivered reactants. case tartaric acid urea agents, mixtures Bi 25 FeO 40 ...

1998
R. B. PEMBER J. P. JESSEE

An Adaptive Projection Method for Unsteady, LowMach Number Combustion R. B. PEMBER , L. H. HOWELL , J. B. BELL , P. COLELLA , W. Y. CRUTCHFIELD , W. A. FIVELAND & J. P. JESSEE To cite this article: R. B. PEMBER , L. H. HOWELL , J. B. BELL , P. COLELLA , W. Y. CRUTCHFIELD , W. A. FIVELAND & J. P. JESSEE (1998) An Adaptive Projection Method for Unsteady, Low-Mach Number Combustion, COMBUSTION SCI...

2015

Jean Dumas (Fig. 1) published his combustion method in Paris back in 1848. This makes the method considerably older than Kjeldahl digestion. While researching the composition of natural oils, Dumas tried combusting his samples, initially to analyse the carbon and hydrogen contained therein. Combustion therefore makes it possible to analyse multiple parameters, while Kjeldahl digestion is only s...

Journal: :Chemosphere 2007
Yu-Jen Shin Yun-Hwei Shen

In this study, various organic solvents were used to prepare coal slurries and the rheological and thermal properties of coal-organic solvent slurries were examined. Solvents with molecules containing unpaired electrons (high basicity) show high extraction power and cause swelling of coal. Therefore, coal-organic solvent slurries usually showed higher viscosities compared to coal-water slurry. ...

M. Naghashzadegan, M. Nikian, , S. K. Arya ,

The cylinder working fluid mean temperature, rate of heat fluxes to combustion chamber and temperature distribution on combustion chamber surface will be calculated in this research. By simulating thermodynamic cycle of engine, temperature distribution of combustion chamber will be calculated by the Crank-Nicolson method. An implicit finite difference method was used in this code. Special treat...

Journal: :Journal of physics 2021

Abstract The uses of phosphate based luminescent materials are presented in this study different fields luminescence. There types phosphors available the field luminescence such as borates, sulphates, fluorides, sulphides, phosphates etc. From all these phosphors, phosphate-based shows their potential almost every last few years and it becomes a key material especially photoluminescence, thermo...

Journal: :Indonesian Journal of Chemical Science 2022


 Nickel ferrite (NiFe2O4) is one of the spinel nanoparticles that useful for scientific and technological, like biomedicine. This paper discusses synthesis NiFe2O4 by various methods. aims to find out most efficient method which are used as hyperthermia agents in The a literature study an article with publications from 1956-2018 discussing several methods syntheses, such sol-gel, hydrothe...

2012
Fang Wang

Combustion is a natural phenomenon. It happens in forest, automotive engine and gas cooker. In Computational Fluid Dynamics (CFD), the combustion phenomenon complies with a set of partial differential equations. According to the resolution scale, from big to small, the simulation methods in combustion are Reynolds Averaged Navior Stokes method (RANS), Large Eddy Simulation (LES), and Direct Num...

2015
Michael G. Woodworth Sayan Biswas Li Qiao

There are many incentives to increase the fuel efficiency of combustion processes. This paper looks at two available options to achieve this goal. The former aims to develop an experimental method that can analyze combustion at extremely high pressures to improve the understanding of high pressure H2/air combustion. Experimental data has been lacking a suitable combustion diagnostic to visualiz...

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