Materials Literature
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Pig muscle phosphoglycerate kinase has been crystallized from polyethyleneglycol in the presence of its substrate 3-phospho-D-glycerate (3-PG) and the structure has been determined at 2.0 A resolution. The structure was solved using the known structure of the substrate-free horse muscle enzyme and has been refined to…
Infrared spectroscopy is used to study simultaneously the orientational behaviour of different segments of dye containing liquid-crystalline side group copolymers in sandwich type films of about 2 μm thickness. Under continuous irradiation with polarized light above and below T g of the polymers both azobenzene and ph…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAliphatic hydroxylation catalyzed by iron(III) porphyrinsTeddy G. Traylor, Kenneth W. Hill, Wen Pang Fann, Shinji Tsuchiya, and Beth E. DunlapCite this: J. Am. Chem. Soc. 1992, 114, 4, 1308–1312Publication Date (Print):February 1, 1992Publication History Published online1 Ma…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIodomethane decomposition on copper(110): surface reactions of C1 fragmentsChao Ming Chiang, Tim H. Wentzlaff, and Brian E. BentCite this: J. Phys. Chem. 1992, 96, 4, 1836–1848Publication Date (Print):February 1, 1992Publication History Published online1 May 2002Published in…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComments on the surface energetics of polyacetyleneJan KloubekCite this: Langmuir 1992, 8, 2, 744–746Publication Date (Print):February 1, 1992Publication History Published online1 May 2002Published inissue 1 February 1992https://pubs.acs.org/doi/10.1021/la00038a073https://do…
Article Mechanical Behaviour and Orientation Characterisation of Drawn Isotropic Nylon-6,6 Fibres was published on February 1, 1992 in the journal Journal of the Mechanical Behavior of Materials (volume 3, issue 4).
Abstract Es wird über die Herstellung und Charakterisierung von dünnen Filmen aus Poly(p‐phenylen‐1, 3,4‐oxadiazolen) berichtet. Die aus H 2 SO 4 ‐Lösungen präparierten Filme besitzen eine gute optische Transparenz und sind mechanisch stabil. Filme aus Michungen mit Polyamiden zeigen ein ähnliches Verhalten und sind a…
Article Activation energies for thermal creep of the Zr1 %Nb alloy in the α-Zr and β-Zr phase regions / Aktivierungsenergien für thermisches Kriechen der Legierung Zr1 %Nb in der α-Zr- und β-Zr-Phase was published on February 1, 1992 in the journal Kerntechnik (volume 57, issue 2).
Magnesia‐partially‐stabilized zirconia (Mg‐PSZ) is industrially important because of transformable metastable tetragonal precipitates which interact with and arrest cracks. This work addresses the precipitation of tetragonal phases at one composition, 9.5 mol% MgO, throughout a range of temperatures. High‐purity zirco…
This work presents a new method of synthesizing the reflection profile, based on the calculation of Fourier coefficients of instrumental functions. The classification and construction of Fourier coefficients are effected, in a general way, from the analysis of the possible paths of beams in the diffractometer. Relatio…
The fluctuation-dissipation theory of free volume in condensed media is discussed. The free volume concept developed is applicable in the theory of viscoelastic properties and thermal expansion of polymers.
CuV 2 O 6 and Cu 2 V 2 O 7 are low-mobility n-type semiconductors; at room temperature [Formula: see text]. From photoelectron-chemical measurements optical interband transitions are found at 2.02 and 3.15 eV for indium-doped CuV 2 O 6 , and at 1.87 and 2.88 eV for Cu 2 V 2 O 7 . In both materials the valence band edg…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA comparative study of zinc oxide overlayers on copper (311), Cu(110), and a high defect concentration Cu(111)Sabrina S. Fu and Gabor A. SomorjaiCite this: Langmuir 1992, 8, 2, 518–524Publication Date (Print):February 1, 1992Publication History Published online1 May 2002Publ…
A new and improved method for the treatment of dislocations in continuum numerical models, in the mesoscale range of lengths 1–1000 nm, is introduced. The dislocation representation, based on splined parametric polynomials, is described. The necessary numerical procedures are presented and justified in detail. Applica…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRadius of gyration and viscosity of linear and star polymers in different regimesAntonio Rey, Juan J. Freire, Marvin Bishop, and Julian H. R. ClarkeCite this: Macromolecules 1992, 25, 4, 1311–1315Publication Date (Print):February 1, 1992Publication History Published online1…
Abstract The spin-lattice relaxation time, T 1 , of the 23 Na-NMR line in NaNO 2 is measured between 25 K and 160 K at two magnetic field strengths, 1.1 T and 6.9 T. The temperature dependence of T 1 for the center line, observed on a polycrystalline sample prepared by precipitation from aqueous solution, is given by…
For atomic systems, the boundaries in position and momentum space that enclose the exact electron number given by the aufbau principle have been numerically calculated. Their relatively irregular behavior as a function of the atomic number Z is demonstrated and explained in terms of corresponding irregularities of the…
The peculiarities of evolution of domain structure in uniaxial ferroelectric lead germanate during switching under the train pulses of strong field are investigated. The contribution of different mechanisms in switching process are discussed.
An antireflective coating on Ge which combines a polycrystalline diamond film with a surface relief (moth eye) structure has been designed and successfully fabricated. This progressive gradation in the effective refractive index between air and the substrate has reduced Fresnel reflection losses to below 1%. This prov…
Abstract The dissolution of two Ca 2+ -exchanged nontronite samples has been studied in 10% HCl. Early acid-dissolution studies (Osthaus, 1954) have indicated that after two hours of dissolution most of the octahedral Fe 3+ ( VI Fe 3+ ) would be removed leaving mainly tetrahedral Fe 3+ ( IV Fe 3+ ) in the nontronite s…