نتایج جستجو برای: thermodynamic models

تعداد نتایج: 944132  

2007
Konstantin Popov Igor Pletnev Hans Wanner Andrey Vendilo

Numerous computerized chemical speciation models based on thermodynamic principles are nowadays available and widely used to estimate biometals, radionuclides and hazardous pollutants behavior in various technological cycles, biosystems and environment. However, these models are sensitive to the reliability of more then 400 000 thermodynamic data provided by various databases and other data sou...

Journal: :Journal of chromatographic science 2002
Katarzyna Ciazynska-Halarewicz Teresa Kowalska

Direct determination of thermodynamic data has always been a complicated and troublesome experimental task. Gas chromatography is among long-established working tools well suited to performing this particular task indirectly. Our own results were first presented in the papers by Ciazynska-Halarewicz and Kowalska (1,2), and this article is Part III in the series. Present experiments are carried ...

2014
S. Abdessameud M. Mezbahul-Islam M. Medraj

Thermodynamic modeling of the H-Mg-Na system is performed for the first time in this work in order to understand the phase relationships in this system. A new thermodynamic description of the stable NaMgH3 hydride is performed and the thermodynamic models for the H-Mg, Mg-Na, and H-Na systems are reassessed using the modified quasichemical model for the liquid phase. The thermodynamic propertie...

2016
S. N. Kempkes A. Quelle C. Morais Smith

Topological insulators (superconductors) are materials that host symmetry-protected metallic edge states in an insulating (superconducting) bulk. Although they are well understood, a thermodynamic description of these materials remained elusive, firstly because the edges yield a non-extensive contribution to the thermodynamic potential, and secondly because topological field theories involve no...

2016

This study presents statistical relationships between cloud-top cloud thermodynamic phase and aerosols (dust, polluted dust and smoke) as well as meteorological variables (vertical velocity at 500 hPa, lower tropospheric static stability (LTSS) and surface temperature) to infer the influence of atmospheric dynamics on cloud thermodynamic phase using a combination of global satellite observation...

Journal: :Nucleic acids research 2003
Wing Lok Abe Kurtz Chiu Chun Ngai Sze Nap Tak Ma Lai Fan Chiu Chung Wai Leung Steve Chik Fun Au-Yeung

The second release of Thermodynamic Database for Nucleic Acids, NTDB 2.0, includes more than 4600 entries (250% increase over release 1.0). It contains sequence types and details of several thermodynamic parameters (enthalpy, DeltaH; entropy, DeltaS; Gibbs free energy, DeltaG; melting temperature, T(m)), experimental models and methods for extracting thermodynamic parameters, buffer conditions ...

2007
Nathaniel Virgo Inman Harvey

We present an extremely minimal ecosystem model which takes account of thermodynamic constraints on the organisms’ metabolism. This suggests a way to test the application of a hypothesised principle of Maximum Entropy Production to ecosystems. It also puts definite physical bounds on the rates at which matter can flow through the system and paves the way for more detailed models that have therm...

Journal: :Applied Mathematics and Computation 2011
Eric Goncalvès Regiane Fortes Patella

Thermodynamic effects play an important role in the cavitation dynamics of cryogenics fluids. Such flows are characterized by strong variations in fluid properties with the temperature. A compressible, multiphase, one-fluid solver was developed to study and to predict thermodynamic effects in cavitating flows. To close the system, a cavitation model is proposed to capture metastable behaviours ...

پایان نامه :0 1392

nowadays in trade and economic issues, prediction is proposed as the most important branch of science. existence of effective variables, caused various sectors of the economic and business executives to prefer having mechanisms which can be used in their decisions. in recent years, several advances have led to various challenges in the science of forecasting. economical managers in various fi...

Mahmood Reza Rahimi Seyyed Milad Salehi,

It seems using the Maxwell-Stefan (M-S) diffusion model in combination with the vacancy solution theory (VST) and the single-component adsorption data provides a superior, qualitative, and quantitative prediction of diffusion in zeolites. In the M-S formulation, thermodynamic factor (Г) is an essential parameter which must be estimated by an adsorption isotherm. Researchers usually utilize the ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید