WorldCat Identities

Balázs, Béla A. Dr

Overview
Works: 41 works in 68 publications in 4 languages and 505 library holdings
Genres: Catalogs  Conference proceedings  Biography‡vDictionaries 
Roles: Editor, Creator
Classifications: QB851, 523.85
Publication Timeline
Key
Publications about  Béla A Balázs Publications about Béla A Balázs
Publications by  Béla A Balázs Publications by Béla A Balázs
Most widely held works about Béla A Balázs
 
Most widely held works by Béla A Balázs
Dynamical astronomy : proceedings of the second U.S.-Hungary workshop ( Book )
2 editions published in 1985 in English and held by 143 WorldCat member libraries worldwide
Catalogue of star clusters and associations : supplement 1 by J Ruprecht ( Book )
5 editions published in 1981 in English and held by 102 WorldCat member libraries worldwide
Catalogue of star clusters and associations by Československá akademie věd ( Book )
4 editions published between 1970 and 1981 in English and held by 89 WorldCat member libraries worldwide
Star clusters and associations by Star Clusters and Associations ( Book )
11 editions published between 1985 and 1990 in English and held by 41 WorldCat member libraries worldwide
Dynamical astronomy : proceedings of a workshop sponsored by the NSF-U.S. and by the Hungarian Academy of Sciences ( Book )
3 editions published in 1982 in English and held by 40 WorldCat member libraries worldwide
Dreifarben - Photometrie von NGC 189 und Stock 24 by Béla A Balázs ( Book )
2 editions published in 1961 in German and held by 9 WorldCat member libraries worldwide
Kalandok és figurák; vázlatok by Béla A Balázs ( Book )
2 editions published in 1918 in Hungarian and held by 8 WorldCat member libraries worldwide
Mi az idő? ( Book )
2 editions published in 1980 in Hungarian and held by 5 WorldCat member libraries worldwide
Dynamical astronomy ( Book )
4 editions published in 1982 in English and held by 5 WorldCat member libraries worldwide
A középrétegek szerepe társadalmunk fejlődésében; egy évszázad magyar történelmének néhány sajátosságáról 1849-1945 by Béla A Balázs ( Book )
1 edition published in 1958 in Hungarian and held by 4 WorldCat member libraries worldwide
The role of star clusters in cosmogony and in the study of galactic structure = Rolʹ zvezdnykh skopleniĭ v kosmogonii i izuchenii struktury galaktiki by No. 6 Subcommission Symposium Stellar Physics and Evolution ( Book )
1 edition published in 1978 in English and held by 4 WorldCat member libraries worldwide
Pei er ge lai xi : nu pu zuo fu ren = Pergolesi : la serva padrona by Pei Er Ge Lai Xi ( Book )
1 edition published in 2006 in Chinese and held by 3 WorldCat member libraries worldwide
Dynamical astronomy : proceedings of a Workshop (on Dynam. Astronomy ...) ( Book )
1 edition published in 1982 in English and held by 2 WorldCat member libraries worldwide
Csillagászattörténet : életrajzi lexikon, A-Z by Béla A Balázs ( Book )
1 edition published in 1982 in Hungarian and held by 2 WorldCat member libraries worldwide
H2O Outgassing from Silicones ( )
1 edition published in 2004 in English and held by 2 WorldCat member libraries worldwide
In this fiscal year, we have tested the H{sub 2}O outgassing model for TR55 against independent core tests performed at different temperatures by our collaborators at Y12. At higher temperature ({approx} 71 C), the model properly predicts moisture outgassing from TR55 over the entire experiment. At lower temperature ({approx} 42.5 C), the model correctly predicts long-term moisture outgassing. However, in short-term limit, a better fit with core tests might be expected when the diffusion effect of H{sub 2}O through the silicone matrix is included into the model in the near future. A lookup table for the moisture content as well as moisture outgassing kinetics for M9787 which have previously been heated to 460K for one day and then exposed to relevant low levels of moisture is also now available as a reference for engineers/technicians in the fields
Measurement and Prediction of Water Outgassing from TR55 Silicone by the Isoconversional Technique ( )
1 edition published in 2006 in English and held by 2 WorldCat member libraries worldwide
The objectives of this report are to measure the H{sub 2}O outgassing kinetics of TR55 silicon after a few hours of vacuum pumping; and to make H{sub 2}O outgassing kinetic predictions for TR55 at low temperatures in a vacuum/dry environment
Computational Modeling of Uranium Corrosion and the role of Impurities(Fe, Cr, Al, C and Si) ( )
1 edition published in 2005 in English and held by 2 WorldCat member libraries worldwide
My talk will focus on our recent computational modeling results of uranium corrosion and the impact of impurities on uranium corrosion, which occurs primarily through hydriding Uranium hydriding is one of the most important processes that has received considerable attention over many years. Although significant number of experimental and modeling studies have been carried out concerning thermo chemistry, diffusion kinetics and mechanisms of U-hydriding, very little is known about the electronic structure and electronic features that govern the U-hydriding process. Our modeling efforts focus the electronic feature that controls the activation barrier and thus the rate of hydriding. Our recent efforts have been focused on the role of impurities such as Fe, Cr, Si, C, Al and so on. Moreover the role of impurities and the role of the product UH{sub 3} on hydriding rating have not been fully understood. Condon's diffusion model was found to be in excellent agreement with the experimental reaction rates. From the slopes of the Arrhenius plot the activation energy was calculated as 6.35 kcal/mole. Bloch and Mintz have discussed two models, one, which considers hydrogen diffusion through a protective UH{sub 3} product layer, and the second where hydride growth occurs at the hydride-metal interface. These authors obtained two-dimensional fits of experimental data to the pressure-temperature reactions. Powell et al. have studied U-hydriding in ultrahigh vacuum and obtained the linear rate data over a wide range of temperatures and pressures. They found reversible hydrogen sorption on the UH{sub 3} reaction product from kinetic effects at 21 C. This demonstrates restarting of the hydriding process in the presence of UH{sub 3} reaction product. DeMint and Leckey have shown that Si impurities dramatically accelerate the U-hydriding rates. We report our recent results of relativistic computations that vary from complete active space multi-configuration interaction (CAS-MCSCF) followed by multi-reference configuration interaction (MRSDCI) computations that included up to 60 million configurations for modeling of uranium-hydriding with cluster models will be presented. Our computed potential energy surface for the insertion of a U site into H{sub 2} reveals that pure U site has to surpass a barrier of 20.9 kcal/mole for the U-hydriding. Once the barrier is surpassed a stable product is formed which is 22.4 kcal/mole more stable than the reactants. We have also developed a computational model to study the role of the UH{sub 3} product and other impurities such as Fe, Cr, Si, C, Al, etc., on the uranium hydriding reaction. Our model reveals that the product UH{sub 3} is highly ionic and thus U transfers electron density to the three hydrogens resulting in a U{sup +3} state. U{sup +3} is shown to insert into H{sub 2} spontaneously thus demonstrating the U-site in the product UH{sub 3} binds to H{sub 2} spontaneously forming a complex in which H{sub 2} is separated far enough so as to cause liberation of H atoms in the presence of U. Our computed potential energy surfaces reveal a 21 kcal/mole activation energy barrier for pure U reaction with H{sub 2}. However, the presence of the product UH{sub 3} catalyzes the U-hydriding. We have also modeled the presence of Si impurities for the U-hydriding reaction to show that the activation barrier is lowered by the presence of Si. However carbon impurity does not influence the hydriding process. Our computations reveal an electron donor-acceptor model for the U-hydriding, where H{sub 2} exchanges electronic density from its occupied 1{sigma}{sub g} orbital to the U(6d {sigma}) orbital and back donation from the U(6d {pi}) orbital back to H{sub 2} 1{sigma}{sub u} antibonding orbital. As seen from the figures shown below our recent works show that elemental impurities such as Al do not have impact on hydriding, elements such as Fe and Cr have small impact while the elemental carbon inhibits corrosion through the formation of ionic uranium carbide species
Testvér ország by Béla A Balázs ( Book )
1 edition published in 1918 in Hungarian and held by 2 WorldCat member libraries worldwide
DPB progress report Hydrogen uptake capacity for a particular sample of DPB ( )
1 edition published in 2004 in English and held by 2 WorldCat member libraries worldwide
The authors have performed hydrogen uptake to measure the remaining capacity for two DPB pellet samples. The measurements were made with a Cahn microbalance operating at room temperature. The DPB samples were placed inside a quartz boat and the microbalance was then evacuated to a base pressure of 10{sup -4} Torr overnight. This overnight pumping removed volatile contaminants from the DPB pellets prior to the introduction of 600 Torr of N{sub 2} into the microbalance chamber. Next, a leak valve connecting the microbalance with a research grade source of H{sub 2} was opened to add 100 Torr of H{sub 2} on top of the 600 Torr of N{sub 2} already in the microbalance. When the total pressure in the microbalance reached 700 Torr, the H{sub 2} leak valve was not completely shut off but reduced to a very small positive rate. An automatic gate valve connecting the microbalance to a turbo molecular pump was programmed by a controller to keep the total pressure in the microbalance at 700 {+-} 3 Torr. The balance between H{sub 2} consumption due to DPB uptake and H{sub 2} leak rate into the microbalance was such that the gate valve to the turbo molecular pump was only slightly opened by the controller once in a while (a few seconds per few hours) to keep the total pressure constant at 700 Torr
 
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Audience Level
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Audience level: 0.92 (from 0.06 for Testvér o ... to 1.00 for The role o ...)
Alternative Names
Balázs, B.
Balázs, B. 1935-
Balázs, B. A.
Balázs, B. A. 1935-
Balázs, B. A. (Bela A.), Dr.
Balázs, B. (Bela), Dr.
Balázs, Bela.
Balázs, Béla 1935-
Balázs, Béla A.
Balázs, Bela, Dr.
Languages
English (37)
Hungarian (8)
German (2)
Chinese (1)