Materials Literature
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In the title complex, (C(12)H(10)FN(2))(2)[Ni(C(4)N(2)S(2))(2)], the anion lies on an inversion center with the Ni(II) ion coordinated by four S atoms in a slightly distorted square-planar environment. In the unique cation, the dihedral angle between the benzene and pyridine rings is 7.1 (2) Å.
The asymmetric unit of the title complex, [Pd(2)(NO(3))(4)(C(58)H(52)N(2)P(4))], contains one half-mol-ecule, in which the central benzene ring is located on a crystallographic centre of inversion. The Pd atom has a distorted square-planar coordination consisting of two P and two O atoms. In the crystal structure, int…
Cover: Four new phenylacetylenes having two hydroxyl groups and an alkyl group with more than six C atoms were found to be suitable for helix‐sense‐selective polymerization. Other phenylacetylenes with shorter alkyl groups gave only insoluble polymers. The longer alkyl chains could stabilize a one‐handed helical struc…
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We investigate the temperature dependence of charge ordered clusters in manganites. In terms of an approximate treatment of the half-filled spinless Holstein model incorporating the double exchange effect and nearest-neighbor Coulomb interactions, we find that charge ordering and polaronic states appear simultaneously…
In July 2008, the Hahn-Meitner-Institut (HMI) celebrated 50 years of neutron science in Berlin. But besides the semi-centennial of the first neutrons in Berlin, the year 2008 also brought a new name for the institute. Since May 30 2008, the HMI is now called Helmholtz-Zentrum Berlin für Materialien und Energie (HZB).…
The primary objective of the independent verification was to determine if BJC performed the appropriate actions to meet the specified “hot spot” cleanup criteria of 500 picocuries per gram (pCi/g) uranium-238 (U-238) in surface soil. Specific tasks performed by the independent verification team (IVT) to satisfy this o…
A new types of hyperbranched polyester was synthesized by the 2,2-bis(hydroxymethyl) propionic acid as an AB2-type monomer and glycerol as the core moiety. Molecular weights were confirmed by Gel Permeation Chromatography. Acid values were titrated by KOH. The hydroxy value was obtained by titration. Furthermore, we c…
The electronic structure of Pu is briefly discussed, with emphasis upon Aging effects. Photoelectron Spectroscopy and X-ray Absorption Spectroscopy have contributed greatly to our improved understanding of Pu electronic structure. (See Figure 1.) From these and related measurements, the following has been determined:…
The CH2M HILL Plateau Remediation Company (CHPRC) has recommended to the U.S. Department of Energy (DOE) a two phase approach for removal and storage (Phase 1) and treatment and packaging for offsite shipment (Phase 2) of the sludge currently stored within the 105-K West Basin. This two phased strategy enables early r…
The hydro-thermal reaction of CoCO(3) and 4-fluoro-benzoic acid afforded the title Co(II) complex, [Co(C(7)H(4)FO(2))(2)(H(2)O)(2)](n). The Co(II) atom is located on an inversion center and is coordinated by six O atoms from two water mol-ecules and four μ(2)-carboxyl-ate groups of 4-fluoro-benzoate anions, forming a…
Engineers working in the petrochemical industry are commonly required to deal with changes and modifications to an existing facility. These changes and modifications must be recognized and evaluated for their impact on the existing equipment support structures and foundations. The updated ASCE report "Wind Loads on Pe…
Carrier mobility has become the most important characteristic of high speed low dimensional devices. Due to development of very fast switching semiconductor devices, speed of computer and communication equipment has been increasing day by day and will continue to do so in future. As the response of any device depends…
In the present thesis, a hybrid numerical method is presented for the solution of very large and complex radiation and scattering electromagnetic problems, which combines the Finite Element Boundary Integral (FEBI) technique and the Multilevel Fast Multipole Method (MLFMM) with the Uniform Geometrical Theory of Diffra…
We develop a computational method for evaluating the damping of vibrational modes in mono-atomic metallic chains suspended between bulk crystals under external strain. The damping is due to the coupling between the chain and contact modes and the phonons in the bulk substrates. The geometry of the atoms forming the co…
Hysteresis is exhibited by many physical systems. Smart materials such as piezoelectrics, magnetostrictives and shape memory alloys possess useful properties, especially in the field of micropositioning, but the control of these systems is difficult due to the presence of hysteresis. An accurate model is required to p…
A particular type of surface chemical reaction resulted in direct charge ejection. Several different experimental observations strongly support the hypothesis that nearly all of the molecular kinetic energy of a highly excited vibrating molecule was transferred to the kinetic energy of a single electron in a conductin…
Progressive collapse specifications prescribe alternate load path analysis as a means for ensuring adequate structural integrity and load redistribution capability. This approach is generally viewed as "threat-independent" in that it assumes the removal of individual columns, but does not consider the initiating event…
In the three years since Unified Facilities Criteria (UFC) 4-023-03 Design of Buildings to Resist Progressive Collapse was first published in January of 2005, various omissions, ambiguities, and opportunities for improvement were identified by civilian and government designers and engineers. A significant revision of…
In the centrosymmetric title compound, [Ag(4)(C(10)H(2)O(8))](n), the benzene ring has irregular bond lengths but remains planar (r.m.s. deviation 0.0002 Å). The Ag-O bond lengths are in the range 2.153 (3)-2.615 (4) Å. The carboxyl-ate groups are oriented at dihedral angles of 26.4 (5) and 74.9 (4)° to the benzene ri…