Materials Literature
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Collagen was exposed to an ultraviolet (UV) lamp that emitted predominantly in the UVB range. The cross-linking of collagen type I and type IV by UV irradiation was observed. Amino acid analyses revealed that Tyr residues in both collagen types I and IV were decreased by irradiation. In collagen type IV, losses of His…
Summary A combination of molecular modelling and atomic force microscopy (AFM) techniques was used to study the surface structure of crystalline cellulose. Two‐dimensional Fourier analysis of the AFM raw data gave crystal parameters as well as a highly filtered inverse‐transformed image. Molecular modelling was used t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMiscibility and Crystallization Behavior of Poly(ethylene terephthalate)/Poly(ether imide) BlendsHsin-Lung ChenCite this: Macromolecules 1995, 28, 8, 2845–2851Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published inissue 1 April 1995ht…
The gamma-carboxyglutamic acid-rich domain of blood coagulation Factor IX is required for the binding of the protein to phospholipid membranes. To investigate the three-dimensional structure of this domain, a synthetic peptide corresponding to residues 1-47 of Factor IX was studied by 1H NMR spectroscopy. In the absen…
Phosphotransacetylase and acetate kinase catalyze the activation of acetate to acetyl coenzyme A in the first step of methanogenesis from acetate in Methanosarcina thermophila. The genes encoding these enzymes (pta and ack) have been cloned and sequenced. They are arranged on the chromosome with pta upstream of ack (M…
A thermostable mutation, F51L, at the hydrophobic core of human alpha 1-antitrypsin (alpha 1AT) increased the conformational stability of the molecule by decreasing the unfolding rate significantly without altering the refolding rate. The mutation specifically influenced the transition between the native state and a c…
Characteristic 4f photoluminescence of Eu 3+ doped into ZnO was first observed on the red band luminescence. The intensity and fine structures of the Eu 3+ luminescence and their temperature dependence are strongly influenced by the doping conditions. In particular, for the increase of the Eu 3+ luminescence intensity…
<p>Three isomeric liquid crystal (LC) acrylates 1,4-bis((4-((6-(acryloyloxy)hexyl)oxy)benzoyl)-oxy(benzene, ((6-(acryloyloxy)hexyl)oxy)-4-((4-((4-((6-(acryloyloxy)hexyl)oxy)benzoyl)oxy)benzoyl)oxy)-benzene, and bis(4-((6-(acryloyloxy)hexyl)oxy)phenyl) terephthalate were Synthesized. The orientation of the ester…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvolution of Pore and Phase Structure of Sol-Gel Derived Lanthana Doped Titania at High TemperaturesR. Gopalan and Y. S. LinCite this: Ind. Eng. Chem. Res. 1995, 34, 4, 1189–1195Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published ini…
Using neutron diffraction, x-ray scattering, and bulk-magnetization methods, we have characterized the magnetic structure for ${\mathrm{Fe}}_{3}$${\mathrm{O}}_{4}$/NiO superlattices grown by molecular-beam epitaxy. The antiferromagnetic NiO order extends through several superlattice bilayers, even though the interveni…
Compositional changes which take place during sintering of Pb(Zr,Ti)O 3 (PZT) containing excess PbO were studied. The excess PbO forms a liquid phase during the sintering process. The solubility of the TiO 2 component of PZT in liquid PbO is higher than that of ZrO 2 component. Thus, if an excess PbO exists, the compo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagneto-Structural Effects of the Jahn-Teller Distortions on 2,2'-Bipyrimidine-, (bpm-) Bridged Dinuclear Copper(II) Complexes: Crystal Structures and Magnetic Properties of [Cu2(bpm)(H2O)4(SO4)2].cntdot.3H2O and [Cu2(bpm)(H2O)8](SO4)2.cntdot.2H2OGiovanni De Munno, Miguel Ju…
Recent advances in ferroelectric thin film technology have generated significant interest for use as capacitor dielectrics in semiconductor memories. Ferroelectric non-volatile memories (NVRAMS) have several unique features which set them apart from floating-gate non-volatile memories, including high-speed write opera…
Molecular dynamics computer simulations were employed to investigate defect production, atomic mixing and chemical disordering in β-NiA1 owing to 10keV cascades. The embedded atom potentials of Voter and Chen (1989) were employed. Point defect energies and threshold displacement energies were also obtained. The defect…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of the Lamellar Morphology of Microphase-Separated Cyclic Block Copolymers and Their Linear PrecursorsR. L. Lescanec, D. A. Hajduk, G. Y. Kim, Y. Gan, R. Yin, S. M. Gruner, T. E. Hogen-Esch, and E. L. ThomasCite this: Macromolecules 1995, 28, 9, 3485–3489Publicati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetal Centers Connected by Conjugated Bridges. A Theoretical Evaluation of Delocalization EffectsMichael B. SponslerCite this: Organometallics 1995, 14, 4, 1920–1927Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published inissue 1 April…
To what extent the host defense role of granule-associated antibacterial proteins and peptides of PMN includes extracellular action has not been established. To address this question, we have analyzed the antibacterial activity of cell-free (ascitic) fluid (AF) obtained from glycogen-induced sterile inflammatory rabbi…
Novel photo‐ and electroluminescent polymers based on poly( p ‐pyridyl vinylene), poly( p ‐pyridinium vinylene) and their butyl‐substituted derivatives are reported. The materials exhibit good fluorescence quantum yields and the butyl derivatives are soluble in conventional organic solvents. Highly luminescent thin fi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFunctional Model of Dopamine .beta.-Hydroxylase. Quantitative Ligand Hydroxylation at the Benzylic Position of a Copper Complex by DioxygenShinobu Itoh, Toshihiko Kondo, Mitsuo Komatsu, Yoshiki Ohshiro, Chunmin Li, Nobuko Kanehisa, Yasushi Kai, and Shunichi FukuzumiCite this…
Ab initio restricted Hartree–Fock 6-31G calculations are reported for the static longitudinal hyperpolarizability of the linear polyenes C4H6 through C44H46. Using a new extrapolation technique the infinite chain value in polyacetylene is determined with an accuracy similar to that achieved for small molecules. This i…