199,429 research outputs found
(書簡)Date: 1972/5/9 ; Sender: Scheffler, Richard M. ; Receiver: Perlman
No full text附:Scheffler 経歴書, IEA, Tokyo Conference on Economics of Health and Medical Care, 1973について1枚コピーUniv. of North Carolina 用紙書簡オリジナルの所在: 一橋大学経済研究所資料室都留重人氏より寄贈1-B1-15-20/00
Temperature dependent surface relaxations of Ag(111)
No full textThe temperature-dependent surface relaxation of Ag(lll) is calculated by density-functional theory. At a given temperature, the equilibrium geometry is determined by minimizing the Helmholtz free energy within the quasiharmonic approximation. To this end, phonon dispersions all over the Brillouin zone are determined from density-functional perturbation theory. We find that the top-layer relaxation of Ag(lll) changes from an inward contraction (-0.8%) to an outward expansion (+6.3%) as the temperature increases from T=0 K to 1150 K, in agreement with experimental findings. Also, the calculated surface phonon dispersion curves at room temperature are in good agreement with helium-scattering measurements. The mechanism driving this surface expansion is analyzed, and the physical picture developed by Narasimhan and Scheffler is essentially confirmed. [S0163-1829(99)00502-0]
REVIEW OF SCHEFFLER REFLECTOR
No full textScheffler reflector is one of the
various methods of harvesting the solar energy. Sche
ffl
er fixed focus
concentrators are successfully used for medium temperature applications in different parts of the world. These
concentrators are taken as lateral sections of paraboloids and provide fixed focus away from the path of incident
beam radiations
throughout the year.
Parabolic Scheffler Reflectors can provide us high temperature heat for all
types of cooking, steam generation and many other applications.
In this paper different
Scheffler
systems are
reviewed
(書簡)Date: 1972/6/12 ; Sender: Scheffler, Richard M. ; Receiver: Perlman
No full textIEA, Tokyo Conference on Economics of Health and Medical Care, 1973について1枚コピーUniv. of North Carolina 用紙書簡オリジナルの所在: 一橋大学経済研究所資料室都留重人氏より寄贈1-B1-15-20/00
REVIEW OF SCHEFFLER REFLECTOR
No full textScheffler reflector is one of the
various methods of harvesting the solar energy. Sche
ffl
er fixed focus
concentrators are successfully used for medium temperature applications in different parts of the world. These
concentrators are taken as lateral sections of paraboloids and provide fixed focus away from the path of incident
beam radiations
throughout the year.
Parabolic Scheffler Reflectors can provide us high temperature heat for all
types of cooking, steam generation and many other applications.
In this paper different
Scheffler
systems are
reviewed
(書簡)Date: 1972/6/12 ; Sender: Scheffler, Richard M. ; Receiver: Tsuru, S (Shigeto)
No full textIEA, Tokyo Conference on Economics of Health and Medical Care, 1973について, 附:“Supply and use of paramedics”1枚タイプUniv. of North Carolina 用紙書簡オリジナルの所在: 一橋大学経済研究所資料室都留重人氏より寄贈1-B1-15-20/00
Die Vortrefliche Hülfe Gottes in Erhaltung der Stadt Luckau samt ihren Einwohnern : ward am Sonntage Cantate den 30. Aprill 1752. aus dem ordentlichen Evangelio Joh. Cap. XVI. v. 12 - 15. bey dem eingefallenen hundertiährigen Brand-Buß-Tage oder dermaligen Jubel-Feste in volckreicher Kirchen-Versammlung zur danckbaren Erinnerung öffentlich vorgetragen / von M. Johann Christian Adami Archidiac. und des Min. Sen.
No full textAutopsie nach Ex. der ULB Sachsen-AnhaltVorlageform des Erscheinungsvermerks: Wittenberg. Gedruckt bey der Schefflerischen Wittwe
Cellular Ceramics: Structure, Manufacturing, Properties and Applications
No full textCellular ceramics are a specific class of porous materials which includes among others foams, honeycombs, connected fibers, robocast structures and assembled hollow spheres. Because of their particular structure, cellular ceramics display a wide variety of specific properties which make them indispensable for various engineering applications. An increasing number of patents, scientific literature and international conferences devoted to cellular materials testifies to a rapidly growing interest of the technical community in this topic. New applications for cellular ceramics are constantly being put under development.
The book, authored by leading experts in this emerging field, gives an overview of the main aspects related to the processing of diverse cellular ceramic structures, methods of structural and properties characterisation and well established industrial, novel and potential applications. It is an introduction to newcomers in this research area and allows students to obtain an in-depth knowledge of basic and practical aspects of this fascinating class of advanced materials
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On the accuracy of van der Waals inclusive density-functional theory exchange-correlation functionals for ice at ambient and high pressures
No full textDensity-functional theory (DFT) has been widely used to study water and ice for at least 20 years. However, the reliability of different DFT exchange-correlation (xc) functionals for water remains a matter of considerable debate. This is particularly true in light of the recent development of DFT based methods that account for van der Waals (vdW) dispersion forces. Here, we report a detailed study with several xc functionals (semi-local, hybrid, and vdW inclusive approaches) on ice Ih and six proton ordered phases of ice. Consistent with our previous study [B. Santra, J. Klimeš, D. Alfè, A. Tkatchenko, B. Slater, A. Michaelides, R. Car, and M. Scheffler, Phys. Rev. Lett. 107, 185701 (2011)] which showed that vdW forces become increasingly important at high pressures, we find here that all vdW inclusive methods considered improve the relative energies and transition pressures of the high-pressure ice phases compared to those obtained with semi-local or hybrid xc functionals. However, we also find that significant discrepancies between experiment and the vdW inclusive approaches remain in the cohesive properties of the various phases, causing certain phases to be absent from the phase diagram. Therefore, room for improvement in the description of water at ambient and high pressures remains and we suggest that because of the stern test the high pressure ice phases pose they should be used in future benchmark studies of simulation methods for water
Notes on Substitution in First–Order Logic
No full textKracht M. Notes on Substitution in First–Order Logic. In: Scheffler U, ed. First-Order Logic 75. Berlin: Logos Verlag; 2004: 155-172
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