Results 1 to 10 of about 3,845 (189)

BeF(3)(-) acts as a phosphate analog in proteins phosphorylated on aspartate: structure of a BeF(3)(-) complex with phosphoserine phosphatase.

Proceedings of the National Academy of Sciences of the United States of America, 2001
Protein phosphoaspartate bonds play a variety of roles. In response regulator proteins of two-component signal transduction systems, phosphorylation of an aspartate residue is coupled to a change from an inactive to an active conformation. In phosphatases and mutases of the haloacid dehalogenase (HAD) superfamily, phosphoaspartate serves as an ...
H, Cho, W, Wang, R, Kim, H, Yokota, S, Damo, S H, Kim, D, Wemmer, S, Kustu, D, Yan   +8 more
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Fluoride Model Systems: III, The System NaF–BeF ₂ and the Polymorphism of Na ₂ BeF ₄ and BeF ₂

Journal of the American Ceramic Society, 1953
A revised equilibrium diagram is presented for the system NaF–BeF 2 , a weakened model of the system CaO–SiO 2 . The compound Na 2 BeF 4 has four structural modifications ...
DELLA M. ROY, RUSTUM ROY, E. F. OSBORN
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Über Modellsilikatgläser und ihre Konstitution : Die Glassysteme LiF-BeF₂, NaF-BeF₂, KF-BeF₂ und RbF-BeF₂

1958
Es wurden binäre Alkaliberylliumflouridgläser hergestellt und untersucht. Die erhaltenen Kurven der Lichtbrechung, der Dichte, der Molrefraktion und des optischen Raumerfüllungsgrades wurden mit Hilfe der Vorstellungen DIETZELS über den Alkaliioneneinbau in SiO 2-Glas strukturell gedeutet.
Vogel, Werner, Gerth, Klaus
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The BEF and the Issue of Surrender on the Western Front in 1940

War in History, 2004
This article explores the reasons behind the surrenders of large numbers of British troops in the 1940 battle for France and Flanders. The article contends that the surrenders do not indicate poor morale but merely a pragmatic reaction to the situation.
Mark Connelly, Walter Miller
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BeF-Emissionsbanden im induktiv gekoppelten plasma

Spectrochimica Acta Part B: Atomic Spectroscopy, 1984
Abstract In this study we try to detect metal fluoride bands in the inductively coupled plasma. BeF∗ provided the most intense spectra with a head at 300.99 nm. Maximum intensity of BeF∗ was found under the following conditions: high carrier gas flow, low power level and low observation height above the load coil.
D. Marquardt, P. Lüderitz, J. Grosser
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The potential for AMS analysis of 10Be using BeF−

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2004
Abstract The potential for the measurement of 10 Be/ 9 Be ratios near 10 −12 , using 10 Be 19 F − ions and small accelerator mass spectrometry (AMS) systems, is described. In comparison with the use of 10 Be 16 O − ions the interference from the 10 B isobar is reduced by about five orders of magnitude.
Zhao, XL, Litherland, AE, Doupe, JP, Kieser, WE   +3 more
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Bef analogy for axisymmetrically loaded cylindrical shells

Computers & Structures, 1990
Abstract A simple finite element analysis based on an analogy with the theory of beams on elastic foundation is developed for closed circular cylindrical shells with arbitrarily varying wall thickness subjected to axisymmetric radial loading which may vary in the longitudinal direction.
Francis, Tin Loi, Pulmano, Victor A., Thambiratnam, David   +2 more
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A TALE OF TWO BEFS

CHEST, 2023
YAROSLAV A JAKYMEC, ALI AL SAFI, VINCENT MARTELLO, BRETT H ERDREICH   +3 more
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BEF Bulletin No 2 - Juni 2016

2016
Formålet med nærværende Bulletin er at vise en forholdsvis simpel beregningsmetode til bestemmelse af wiresløjfesamlingers forskydningsbæreevne.Dokumentet er hovedsageligt baseret på Henrik Brøner Jørgensens ph.d. afhandling. Ph.d.‐projektet var delvis finansieret af Betonelement‐Foreningen og blev gennemført under vejledning af Linh Cao Hoang og Lars ...
Jørgensen, Henrik Brøner, Hoang, Linh Cao, Hagsten, Lars German   +2 more
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Raman and theoretical studies on structural evolution of Li2BeF4 and binary LiF-BeF2 melts

Journal of Molecular Liquids, 2021
Xiyan Liu, Chenyang Wang, Yangjuan Li
exaly