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81.
Chemical preparation, x-ray single crystal, and thermal analysis of C6H18N2SO4·H2O (denoted DMPS) are described. The compound crystallizes in the triclinic system with P
space group. Its unit cell dimensions are a = 5.826(1) Å, b = 10.014(1) Å, c = 11.221(1) Å, = 66.716(1)°, = 84.395(1)°, = 83.759(1)°, V = 596.7(1) Å3, and Z = 2. The DMPS structure is built up from inorganic chains parallel to the a axis and linked via O(W)-H···O hydrogen bonds. These chains are interconnected by organic groups. Thermal analysis reveals the presence of one water molecule in the structure and shows a reversible weak phase transition. 相似文献
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Emilio Pardo Dr. Danielle Cangussu Dr. Marie-Claire Dul Rodrigue Lescouëzec Dr. Patrick Herson Yves Journaux Dr. Emerson F. Pedroso Dr. Cynthia L. M. Pereira Dr. M. Carmen Muñoz Prof. Dr. Rafael Ruiz-García Dr. Joan Cano Dr. Pedro Amorós Prof. Dr. Miguel Julve Prof. Dr. Francesc Lloret Prof. Dr. 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2008,120(22):4279-4284
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G. Amorós S. Noguera J. Portolés 《The European Physical Journal C - Particles and Fields》2003,27(2):243-254
Within the framework of phenomenological Lagrangians we construct the effective action of QCD relevant for the study of semileptonic
decays of charmed mesons. Hence we evaluate the form factors of at leading order in the 1/N
C
expansion and, by demanding their QCD-ruled asymptotic behavior, we constrain the couplings of the Lagrangian. The features
of the model-independent parameterization of form factors are provided, and their relevance for the analysis of experimental
data are pointed out.
Received: 28 October 2002 / Published online: 24 January 2003 相似文献
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S. González de la Hoz L. March E. Ros J. Sánchez G. Amorós F. Fassi A. Fernández M. Kaci A. Lamas J. Salt 《The European Physical Journal C - Particles and Fields》2008,54(4):691-697
In the ATLAS computing model the tiered hierarchy ranged from the Tier-0 (CERN) down to desktops or workstations (Tier-3).
The focus on defining the roles of each tiered component has evolved with the initial emphasis on the Tier-0 and Tier-1 definition
and roles. The various LHC (Large Hadron Collider) projects, including ATLAS, then evolved the tiered hierarchy to include
Tier-2’s (Regional centers) as part of their projects. Tier-3 centres, on the other hand, have been defined as whatever an
institution could construct to support their Physics goals using institutional and otherwise leveraged resources and therefore
have not been considered to be part of the official ATLAS computing resources. However, Tier-3 centres are going to exist
and will have implications on how the computing model should support ATLAS physicists. Tier-3 users will want to access LHC
data and simulations and will want to enable their resources to support their analysis and simulation work. This document
will define how IFIC (Instituto de Física Corpuscular de Valencia), after discussing with the ATLAS Tier-3 task force, should
interact with the ATLAS computing model, detail the conditions under which Tier-3 centres can expect some level of support
and set reasonable expectations for the scope and support of ATLAS Tier-3 sites. 相似文献
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