نتایج جستجو برای: simultaneous thermal analysis

تعداد نتایج: 3089110  

2006
S. SHARIFIAN ATTAR F. MOHAMMADI

This papers describes a computer environment that supports the simultaneous electrical and thermal interactions at device and chip level. A circuit simulator and a finite element thermal simulator are coupled through an application program interface that synchronizes the transfer of information between two simulators. Temperature dependent thermal conductivity of silicon is taken into account b...

2011
J. R. Locatelli C. T. Carvalho F. J. Caires M. Ionashiro

Solid-state Ln-L compounds, where Ln stands for heavy trivalent lanthanides (Tb-Lu) and L is malonate, have been synthesized. Simultaneous thermogravimetry and differential thermal analysis (TG-DTA), differential scanning calorimetry (DSC), X-ray powder diffractometry, infrared spectroscopy, TG-FTIR system, elemental analysis and complexometry were used to characterize and to study the thermal ...

2014
P. E Sánchez-Jiménez L. A. Pérez-Maqueda

Combined kinetic analysis has been applied for the first time to the thermal degradation of polymeric materials. The combined kinetic analysis allows the determination of the kinetic parameter from the simultaneous analysis of a set of experimental curves recorded under any thermal schedule. Besides, the method does not make any assumption about the kinetic model or activation energy and allows...

Journal: :geopersia 0
feridon ghadimi arak university of technology, department of mining engineering, arak, iran mahmoud mirzaei department of physics, faculty of science, arak university, arak, iran mohammad ghomi arak university of technology, department of mining engineering, arak, iran

in this study multivariate statistical analysis are used to characterize relationships between hydrochemical properties ofthermal and non-thermal springs. four factors for thermal waters and two for non-thermal springs were extracted basedon factor analysis. in thermal springs, the first factor showed high loading on ca, mg, na and k and this factor wasinterpreted as leaching of cations in the ...

Journal: :geopersia 2013
feridon ghadimi mahmoud mirzaei mohammad ghomi

in this study multivariate statistical analysis are used to characterize relationships between hydrochemical properties ofthermal and non-thermal springs. four factors for thermal waters and two for non-thermal springs were extracted basedon factor analysis. in thermal springs, the first factor showed high loading on ca, mg, na and k and this factor wasinterpreted as leaching of cations in the ...

2006
C. T. Carvalho A. B. Siqueira E. C. Rodrigues M. Ionashiro

Solid-state M-2-MeO-Bz compounds, where M stands for bivalent Mn, Co, Ni, Cu and Zn and 2-MeO-Bz is 2-methoxybenzoate, have been synthesized. Simultaneous thermogravimetry-differential thermal analysis (TG-DTA), thermogravimetry, derivative thermogravimetry (TG/DTG), differential scanning calorimetry (DSC), X-ray powder diffractometry, infrared spectroscopy and complexometry were used to charac...

Journal: :energy equipment and systems 2014
pedram hanafizadeh mojtaba mirzakhani siahkalroudi mohammad ali akhavan bahabadi

nowadays, energy plays an important role in the economic and community development of country. consequently, performance analysis of energy systems is one of the effective methods being used to prevent waste of energy resources. among the different power generation technologies, steam power plants make a significant contribution to power generation in iran, with a share of 47 % of electricity g...

ژورنال: مواد پرانرژی 2017

Ammonium nitrate (AN) is widely used in fertilizers, civilian explosives and military explosives. Due to crystalline phase transitions and density changes of AN in the ambient conditions, its usage as oxidizer in solid propellants has some limitations as compared to ammonium perchlorate (AP). Several methods have been introduced to overcome these problems. In the present paper, the phase transi...

The synthesis of iron oxide nano-particles by direct thermal decomposition was studied. Simultaneous thermal analysis and Fourier transform infrared spectroscopy results confirmed the formation of iron-urea complex, and disclosed iron oxide formation mechanism. Calcination of the iron-urea complex at 200°C and 250°C for 2 hrs. resulted in the formation of maghemite along with hematite as a seco...

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