Search Results - "Ptak, S"

Direct Plasma Potential Measurements by Ball-Pen Probe and Self-Emitting Langmuir Probe on COMPASS and ASDEX Upgrade by Adamek, J., Horacek, J., Seidl, J., Müller, H. W., Schrittwieser, R., Mehlmann, F., Vondracek, P., Ptak, S., COMPASS Team, ASDEX Upgrade Team

“…Experimental investigations of the plasma potential by means of a ball‐pen probe and self‐emitting Langmuir probe technique were performed on the tokamaks…”
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Total FETI based algorithm for contact problems with additional non-linearities by Dobias, J, Ptak, S, Dostal, Z, Vondrak, V

“…The paper is concerned with application of a new variant of the FETI domain decomposition method called Total FETI to the solution to contact problems. Its…”
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Products of thermolysis of potato starch treated with hydrochloric and citric acids as potential prebiotics by Kapusniak, J, Kapusniak, K, Ptak, S, Barczynska, R, Żarski, A

“…New starch preparations were produced by thermolysis of potato starch in the presence of inorganic (hydrochloric) and organic (citric) acids at 150 °C for 3 h…”
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Effect of hydrogen on the structure of Si and C clusters formed in gas phase by CVD processes by Sobol-Antosiak, J, Ptak, W.S

“…Hartree Fock (HF) method and the hybrid density functional theory have been used to find the structure of Si and C clusters that are created in gas phase by…”
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Crystal-chemical aspects of phase transitions in barium titanate by Tkacz-Śmiech, Katarzyna, Koleżyński, Andrzej, Ptak, W.S.

“…Structural aspects of phase transitions in barium titanate are analysed from a crystal-chemical point of view. The respective discussion is focused on two…”
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On the evolution of polygyny: a theoretical examination of the polygyny threshold model by Ptak, Susan E., Lachmann, Michael

“…The polygyny threshold model states that if costs incurred are less than the benefits gained from mating polygynously in terms of breeding-situation quality,…”
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Pauling's electrostatic rule for partially covalent/partially ionic crystals by TKACZ-SMIECH, K, KOLEZYNSKI, A, PTAK, W. S

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Effective crystal potential from electronegativity viewpoint by Koleżyński, Andrzej, Ptak, Wiesław S., Tkacz-Śmiech, Katarzyna

“…The model based on the assumption of the existence of an interatomic distance dependent, local, effective crystal field applied to the alkaline metals and…”
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Electron density in metallic crystal as an extremal with moving boundaries by Tkacz-Smiech, Katarzyna, Ptak, Wiesław S., Kolezynski, Andrzej

“…The reliability of a variational modeling of electron density in metallic crystal is investigated. The crystal is described within muffin‐tin approximation…”
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Linkage Disequilibrium Extends Across Putative Selected Sites in FOXP2 by Ptak, Susan E., Enard, Wolfgang, Wiebe, Victor, Hellmann, Ines, Krause, Johannes, Lachmann, Michael, Pääbo, Svante

“…Polymorphism data in humans suggest that the gene encoding the transcription factor FOXP2, which influences speech and language development, has been subject…”
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Model potentials in studies of atomic electron density distribution by Tkacz-Smiech, Katarzyna, Ptak, Wieslaw S., Kolezynski, Andrzej

“…In density functional theory (DFT), a many‐electron problem for the electron density in atoms may be reduced, according to the Kohn‐Sham scheme, to a…”
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Higher-Impact Solutions for Struggling Mathematics Students by Ptak, Karine S

“…During the 2013-2014 school year, the Maryland State High School Assessment in Algebra with Data Analysis (HSA) was a requirement for high school graduation in…”
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Infrared spectra of β-BaB2O4 and LiB3O5: new nonlinear optical materials by Moryc, U, Ptak, W.S

“…Some boron compounds, among them low temperature phase β-barium metaborate (BBO) and lithium triborate (LBO), are very attractive materials exhibiting large…”
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FETI based algorithms for contact problems: scalability, large displacements and 3D Coulomb friction by Dostál, Zdeněk, Horák, David, Kučera, Radek, Vondrák, Vít, Haslinger, Jaroslav, Dobiáš, Jiří, Pták, Svatopluk

“…Theoretical and experimental results concerning FETI based algorithms for contact problems of elasticity are reviewed. A discretized model problem is first…”
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FTIR studies of structural effects due to boron addition in sintered silicon carbide by Ermer, E, Ptak, W.S

“…Silicon carbide sintered with a boron activator was studied by FTIR. The powder technique was routinely used together with the reflection technique for dense…”
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Overlapping shells model applied to diamondlike crystals by Koleżyński, Andrzej, Ptak, Wiesław S., Tkacz-Śmiech, Katarzyna

“…The model based on the assumption of the existence of an interatomic distance‐dependent, local, effective crystal field applied to the alkaline metals (Int. J…”
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Differential equations for total energy of atoms and atomic ions within Thomas-Fermi approximation by PTAK, W. S, GIEMZA, J, TKACZ, K

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Chemical bond in ferroelectric perovskites by Tkacz-Śmiech, Katarzyna, Koleżyński, A., Ptak, W. S.

“…The chemical bond in ferroelectric ABO 3 perovskites has been considered as a mixed ionic-covalent one. The effect of covalency on the structure has been…”
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A Neutral Explanation for the Correlation of Diversity with Recombination Rates in Humans by Hellmann, Ines, Ebersberger, Ingo, Ptak, Susan E., Pääbo, Svante, Przeworski, Molly

“…One of the most striking findings to emerge from the study of genomic patterns of variation is that regions with lower recombination rates tend to have lower…”
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Corrigendum: Fine-scale recombination patterns differ between chimpanzees and humans by Ptak, S E, Hinds, D A, Koehler, K, Nickel, B, Patil, N, Ballinger, D G, Przeworski, M, Frazer, K A, Pääbo, S

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