Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew Aspects in the Electrochemical Polymerization of Organosilicon CompoundsCh. Jammegg, S. Graschy, and E. HenggeCite this: Organometallics 1994, 13, 6, 2397–2400Publication Date (Print):June 1, 1994Publication History Published online1 May 2002Published inissue 1 June 1994…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrothermal Synthesis and Structure of [(C2H5)4N][(VO)3(OH)(H2O)(C2H5PO3)3].cntdot.H2O. An Inorganic-Organic Polymer Exhibiting Undulating V/P/O Layers and Interlamellar Organic TemplatesM. Ishaque Khan, Young-Sook Lee, Charles J. O'Connor, Robert C. Haushalter, and Jon Zub…
Cotton fabrics and cellulose films treated with fluorocarbon resin (Asahi Guard AG-480 ) with and without crosslinking agents (isocyanate blocked copolymer and aziridine) were washed and subsequently heat treated. Water repellency of the fabrics decreased with washing and recovered with heat treatment. The decreased w…
Abstract Fourier‐transform infrared (FTIR) spectral studies were carried out on a polyurethane in styrene solutions at styrene concentrations from 30 to 90% (w/w). NH vibrations were studied in the stretching and bending regions. The results demonstrated that the NH groups of the polyurethane can hydrogen bond not o…
We describe here the regulatory and coding region, and DNA sequence, for a newly recognized gene, sdaC, which codes for a hydrophobic protein with several predicted membrane-spanning domains. sdaC and sdaB form a single operon, with 57 bp between the end of sdaC and the start of sdaB. Expression of the sdaCB operon is…
To evaluate cardiovascular toxicities associated with the infusion of cryopreserved grafts, we prospectively monitored the infusions of 29 autologous bone marrow transplant (BMT) recipients. Fifteen allogeneic BMT recipients served as a control group. Cardiac rhythm was recorded continuously with the Holter technique…
Protons in some alkaline earth metal‐phosphate glasses are much more mobile than monovalent ions such as Na + and Ag + ions under a dc electrical field. The O‐H bonding in those glasses that is weakened by the strong hydrogen bonding with neighboring nonbridging oxygen ions may cause the mobile protons.
MgO thin films were prepared on Si(100) and GaAs(100) by electron-beam evaporation. MgO thin films with (100) orientation were obtained at 610°C with the deposition rate of 0.5 Å/s, and those with (111) orientation were obtained below 440°C with deposition rate higher than 8 Å/s, on Si substrates. (100) oriented MgO t…
Nickel (Ni) and electroless nickel (EN) coatings are used extensively in caustic soda (NaOH) service. The corrosion resistance of an EN coating is dependent upon phosphorus (P) content, but not in the trend expected. High-phosphorus EN (HPEN) coatings have poorer corrosion resistance in hot, concentrated sodium hydrox…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystallization Kinetics of Low Molecular Weight Fractions of Branched PolyethylenesW. Scott Lambert and Paul J. PhillipsCite this: Macromolecules 1994, 27, 13, 3537–3542Publication Date (Print):June 1, 1994Publication History Published online1 May 2002Published inissue 1 Ju…
It is shown that, for a tilted birefringent plate (BP) with its optic axis parallel to the plate surface, an explicit Jones transformation matrix can be derived without neglecting the birefringent splitting.Differences in calculating the desired thickness(es) of a BP by use of different formulas of phase difference be…
ADVERTISEMENT RETURN TO ISSUEPREVArticleTricontinuous Double-Diamond Structure Formed by a Styrene-Isoprene-2-Vinylpyridine Triblock CopolymerYushu Matsushita, Masaki Tamura, and Ichiro NodaCite this: Macromolecules 1994, 27, 13, 3680–3682Publication Date (Print):June 1, 1994Publication History Published online1 May 2…
A new method for the quantification of montmorillonite by full-profile Rietveld analysis of the XRD profile is presented. A measured standard XRD pattern of Algerian bentonite was used to construct a universally applicable montmorillonite ( hkl ) file for use with a P.C. based Rietveld XRD quantitative analysis system…
The first bis(porphyrin)actinide complexes have been prepared by reaction of the diethylamide complexes M(NR2)4 (where M = Th, U and R = Me, Et) with 5, 10, 15, 20-tetraphenylporphyrin (H2TPP) or 2, 3, 7, 8, 12, 13, 17, 18-octaethylporphyrin (H2OEP). The coordination geometry of Th(TPP)2 is a distorted square-antipris…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolutions of Poly(dimethylsiloxane) in Supercritical CO2: Viscometric and Volumetric BehaviorRuediger Mertsch and B. A. WolfCite this: Macromolecules 1994, 27, 12, 3289–3294Publication Date (Print):June 1, 1994Publication History Published online1 May 2002Published inissue 1…
Cathodic overpotentials of Ln 0.6 Sr 0.4 MnO 3 (Ln is La, Pr, Nd, Sm, Gd, Yb, and Y) were studied for a new cathode for solid‐oxide fuel cells (SOFCs) with low overpotentials in a relatively‐low‐temperature region. Cathodic overpotentials strongly depended on the rare‐earth cations in the A sites of the perovskite oxi…
The solid-state linkage isomerization [Co(NH3)5NO2]Br2⟺ [Co(NH3)5ONO] Br2 was studied, at room temperature, using the X-ray powder diffraction technique. The structure of the photochemically synthesized [Co(NH3)5-ONO]Br2 was solved in the orthorhombic space group Cmcm, with a = 10.8011(7) Å, b = 8.9692(6) Å, c = 10.…
Abstract This paper reports results on the electrical properties of laminated epoxy composite containing 25 layers of carbon fibers in the form of mats. The dependence of the activation energy (calculated from DC resistivity measurements) on temperature reveals two independent conduction processes. The AC impedance is…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEnd Group Effects on Monolayers of Functionally-Terminated Poly(dimethylsiloxanes) at the Air-Water InterfaceThomas J. Lenk, Daniel H. T. Lee, and Jeffrey T. KobersteinCite this: Langmuir 1994, 10, 6, 1857–1864Publication Date (Print):June 1, 1994Publication History Publishe…
The amino acid DL-lysine has been investigated using the surface-sensitive probe XPS (x-ray photoelectron spectroscopy). The XPS data confirm that solid-state lysine exists in the zwitterionic form. However, during the course of x-ray irradiation in the experiment, the molecule was observed to decompose. A decompositi…