Materials Literature
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The structural properties of Sn at normal and high pressures are investigated using a self-consistent ab initio pseudopotential method. The structural stability of various phases including \ensuremath{\alpha}-Sn, \ensuremath{\beta}-Sn, simple hexagonal (sh), hexagonal close packed (hcp), body-centered tetragonal (bct)…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExcited-state acid-base chemistry of (.alpha.-diimine)cyanotricarbonylrhenium(I) complexesR. M. Leasure, LouAnn Sacksteder, D. Nesselrodt, G. A. Reitz, J. N. Demas, and B. A. DeGraffCite this: Inorg. Chem. 1991, 30, 19, 3722–3728Publication Date (Print):September 18, 1991Pub…
Abstract— Recent observations of fatigue cracks bridged by continuous fibers in titanium alloy and titanium aluminide composites are compared to analogous observations in fiber‐reinforced ceramics under monotonic loading. Three failure modes have been identified under axial loading in each case: longitudinal failure (…
The single human tyrosine hydroxylase (TH) gene generates four different mRNA species through alternative splicing events. TH-1 and TH-2 mRNAs are expressed mostly in the brain. We have produced large amounts of the corresponding proteins in Escherichia coli to analyze their respective molecular characteristics. The p…
We investigate the texture which appears as parallel stripes perpendicular to the smectic layers in SSFLC cells. When the temperature approaches the smectic A to smectic C* transition from above in the smectic A phase, a DC field induces the chevron structure due to the electroclinic effect and then the stripe texture…
A series of polymers, bisphenol A-based poly(phosphoesters), were evaluated as degradable biomaterials. Degradation was observed for the four polymers studied under both in vitro and in vivo conditions. The rate of degradation was affected by polymer side-chain structure and correlated with the swelling behavior. The…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPicosecond and nanosecond studies of the photoreduction of benzophenone by N,N-diethylaniline and triethylamineC. Devadoss and Richard W. FessendenCite this: J. Phys. Chem. 1991, 95, 19, 7253–7260Publication Date (Print):September 1, 1991Publication History Published online1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQSAR (quantitative structure-activity relationship) studies on local anestheticsS. P. GuptaCite this: Chem. Rev. 1991, 91, 6, 1109–1119Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Published inissue 1 September 1991https://pubs.acs.o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTImpact improvement mechanism of HIPS with bimodal distribution of rubber particle sizeY. Okamoto, H. Miyagi, M. Kakugo, and K. TakahashiCite this: Macromolecules 1991, 24, 20, 5639–5644Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Pu…
Tungsten trioxide is being developed as a electrochromic material for smart windows. However, the relatively high electrical resistivity and overpotential for hydrogen evolution and oxidation affect their response time and electrical power consumption. Previous work on indicated that admixing of Pt onto significantly…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganic/inorganic-molecular beam epitaxy: formation of an ordered phthalocyanine/tin(IV) sulfide heterojunctionK. W. Nebesny, G. E. Collins, P. A. Lee, Lai Kwan Chau, Jamie Danziger, Elizabeth Osburn, and N. R. ArmstrongCite this: Chem. Mater. 1991, 3, 5, 829–838Publication…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStretching polymer brushes in poor solventsA. Halperin and E. B. ZhulinaCite this: Macromolecules 1991, 24, 19, 5393–5397Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Published inissue 1 September 1991https://pubs.acs.org/doi/10.1021…
Abstract High density polyethylene (HDPE) was reinforced with 0‐40 wt% of wood flour (aspen). The effects of: stearic acid, mineral oil, maleated polyethylene wax, and sodium silicate on the tensile and impact strength of the composite were studied. The comparison of tensile properties of the composites showed that th…
Pt-Ti alloy films were studied for use as a lower electrode of the ferroelectric lead zirconate titanate (PZT) thin film capacitor. Pt-Ti alloy films with different Ti/Pt atomic ratios were first prepared by rf sputtering. Subsequently, PZT thin films were deposited also by rf magnetron sputtering on the Pt-Ti alloy m…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEQCM studies of film growth, redox cycling, and charge trapping of n-doped and p-doped poly(thiophene)Ricardo Borjas and Daniel A. ButtryCite this: Chem. Mater. 1991, 3, 5, 872–878Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Publish…
A Gay-Berne fluid of prolate molecules with length-to-breadth ratio 3 is studied using molecular dynamics simulations. This fluid exhibits vapor, isotropic liquid, nematic, and smectic-B mesophases. For the bulk fluid we report new results along isochores that further delineate the smectic and nematic regions of the p…
Ein lipophiles Inneres und eine hydrophile Oberfläche charakterisieren Ammonium‐[8 2 · 3]‐micellanoate, bei denen es sich um Kaskadenpolymere handelt, die nur sp 3 ‐C‐Atome und CH 2 ‐Gruppen im Innern enthalten und CO ‐Gruppen an der Oberfläche. Die Micelleneigenschaften wurden durch Absorptions‐ und Fluoreszenzspektr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSize and shape characteristics of inorganic molecular ions and their relevance to crystallization problemsP. Michael D. Mingos and Andrew L. RohlCite this: Inorg. Chem. 1991, 30, 19, 3769–3771Publication Date (Print):September 18, 1991Publication History Published online1 Ma…
A cDNA construct (approximately 1 kb) of human BM-40 in a plasmid with the cytomegalovirus promoter and enhancer was used to produce several stable clones by transfecting two human cell lines (293, HT 1080). These clones showed a high expression of exogenous 1-kb BM-40 mRNA and no or only little endogenous 2.2-kb mRNA…
Monodisperse, spherical alumina powders were prepared by the controlled hydrolysis of aluminum alkoxide in a dilute solution consisting of octanoi and acetonitrile. The reagent concentration influenced the particle size, size distribution, morphology, and state of agglomeration. The addition of acetonitrile and octano…