نتایج جستجو برای: gibbs free energy

تعداد نتایج: 1137587  

Journal: :Metals 2023

Studies have shown that the reduction of wustite is limiting factor in ironmaking process, whether hydrogen-based shaft furnaces, hydrogen-rich blast furnaces or smelting vessels. The study thermodynamic conditions for molten by hydrogen great significance optimization energy saving and emission reduction. Previous studies mostly focused on at a lower temperature, but data high temperatures are...

2012
Boris Fackovec Jiri Vondrasek

An amino-acid in proteins shows two different, yet mutually dependent faces connected through the polymer character of a protein in the final product. They are the amino-acid sidechain and its corresponding backbone part. On the level of the side-chains, we often refer to specific structural arrangements such as hydrophobic cluster motifs, salt-bridge motifs or hydrogen-bond motifs characterizi...

2014
Dong-Hee Kang Hao Zhang Hanbyeol Yoo Hyun Hwi Lee Sooheyong Lee Geun Woo Lee Hongbo Lou Xiaodong Wang Qingping Cao Dongxian Zhang Jianzhong Jiang

Glass is a freezing phase of a deeply supercooled liquid. Despite its simple definition, the origin of glass forming ability (GFA) is still ambiguous, even for binary Cu-Zr alloys. Here, we directly study the stability of the supercooled Cu-Zr liquids where we find that Cu64Zr36 at a supercooled temperature shows deeper undercoolability and longer persistence than other neighbouring composition...

Journal: :iranian journal of pharmaceutical research 0
li wang school of pharmacy, jiangsu university, zhenjiang, jiangsu min peng department of pharmaceutics, school of pharmacy, jiangsu university, zhenjiang 212013, p.r. china. school of pharmacy, china pharmaceutical university, nanjing 210009, p.r. china. shan-shan tong department of pharmaceutics, school of pharmacy, jiangsu university, zhenjiang 212013, p.r. china. yuan zhu department of pharmaceutics, school of pharmacy, jiangsu university, zhenjiang 212013, p.r. china xia cao department of pharmaceutics, school of pharmacy, jiangsu university, zhenjiang 212013, p.r. china xi-ming xu department of pharmaceutics, school of pharmacy, jiangsu university, zhenjiang 212013, p.r. china

pluronic/bile salt/phospholipid mixed micelles (pluronic/bs/ps-mm) drug carrier system for solubilization hydrophobic drugs was developed. a typical hydrophobic compound, pyrene, was selected as a representative hydrophobic compound to model the hydrophobic drugs. five pluronics, f68, f88, f98, f108, and f127 with different ppo chain length were studied. cmc data and solubilization capacities w...

1998
Andreas Volmer Thomas Nattermann

In anisotropic or layered superconductors thermal fluctuations as well as impurities induce a van der Waals (vdW) attraction between flux lines, as has recently been shown by Blatter and Geshkenbein in the thermal case [Phys. Rev. Lett. 77, 4958 (1996)] and by Mukherji and Nattermann in the disorder dominated case [Phys. Rev. Lett. 79, 139 (1997)]. This attraction together with the entropic or ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده علوم 1391

nanotechnology is a general term which is related with field of all advanced science term that generally predicates with all modern technologies which consider nanoscales. improvement in the quality of products by adding some nanoparticles and study of their behavior in the presence of these nanoparticles have been obtained in many researches. on the other hand numerous demands for sowing ...

Journal: :Journal of Computational Chemistry 2000
Denton S. Ebel Mark S. Ghiorso Richard O. Sack Lawrence Grossman

An algorithm is described for the calculation of equilibrium compositions of multiple highly nonideal liquid and solid solutions, as well as pure stoichiometric phases, coexisting with a mixture of ideal gas species at fixed temperature and pressure. The total Gibbs free energy of the system is approximated as a quadratic function of the compositions of the gas phase and stable condensed phases...

2005
Fan CHEN Kazuyuki TANAKA Tsuyoshi HORIGUCHI

We propose an image segmentation algorithm under an expectation-maximum scheme using a Bethe approximation. In the stochastic image processing, the image data is usually modeled in terms of Markov random fields, which can be characterized by a Gibbs distribution. The Bethe approximation, which takes account of nearest-neighbor correlations, provides us with a better approximation to the Gibbs f...

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