Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Abstract The open‐loop optimal control strategy to regulate the crystal‐size distribution of batch cooling crystallizers handles input, output, and final‐time constraints, and is applicable to crystallization with size‐dependent growth rate, growth dispersion, and fines dissolution. The objective function can be formu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFused Polycyclic Aromatics via Electrophile-Induced Cyclization Reactions: Application to the Synthesis of Graphite RibbonsMarc B. Goldfinger and Timothy M. SwagerCite this: J. Am. Chem. Soc. 1994, 116, 17, 7895–7896Publication Date (Print):August 1, 1994Publication History…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid-State 13C NMR of Nephila clavipes Dragline Silk Establishes Structure and Identity of Crystalline RegionsAlexandra Simmons, Ed Ray, and Lynn W. JelinskiCite this: Macromolecules 1994, 27, 18, 5235–5237Publication Date (Print):August 1, 1994Publication History Published…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpin Transitions and Thermal Hysteresis in the Molecular-Based Materials [Fe(Htrz)2(trz)](BF4) and [Fe(Htrz)3](BF4)2.cntdot.H2O (Htrz = 1,2,4-4H-triazole; trz = 1,2,4-triazolato)Jonas Kroeber, Jean-Paul Audiere, Renee Claude, Epiphane Codjovi, Olivier Kahn, Jaap G. Haasnoot,…
Research Article| August 01 1994 NAD+-dependent formate dehydrogenase V O Popov; V O Popov 1A. N. Bakh Institute of Biochemistry, Russian Academy of Sciences, Leninskiy pr. 33, 117071, Moscow, Russia Search for other works by this author on: This Site PubMed Google Scholar V S Lamzin V S Lamzin 1A. N. Bakh Institute o…
Abstract Dragline silk from the spider, Nephila clavipes , was characterized by thermal analysis (TGA, DSC, DMA), computational modeling, scanning electron microscopy and by quasi‐static as well as high rates of strain. Thermal stability to about 230°C was observed by TGA, two transitions by DMA, −75°C, representative…
Samples of doped with oxides such as and were prepared. Their conductivities and expansions on reduction were measured at 1000°C, and the thermal expansion coefficients in the range 50 to 1000°C were determined. The ionic and electronic conductivity were derived from curves of total conductivity vs. oxygen partial pre…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface Activity of Poly(ethylene oxide)-block-Poly(propylene oxide)-block-Poly(ethylene oxide) CopolymersPaschalis Alexandridis, Vassiliki Athanassiou, Shinya Fukuda, and T. Alan HattonCite this: Langmuir 1994, 10, 8, 2604–2612Publication Date (Print):August 1, 1994Publicat…
We have solved, refined, and analyzed the 2.0-å resolution crystal structure of a 1:1 complex between the bacterial ribonuclease, barnase, and a Cys-->Ala(40,82) double mutant of its intracellular polypeptide inhibitor, barstar. Barstar inhibits barnase by sterically blocking the active site with a helix and adjacent…
This paper presents a review of recent work on the development of organic salts for second-order nonlinear optical applications. In particular, salts in which the cation has been designed to have a large molecular hyperpolarizability and in which variation of the counterion facilitates preparation of crystals with the…
Carbon nanotubes of uniform size may soon be available in macroscopic quantities. Here we examine the ordered condensed phase of these tubes. As the tube diameter varies, the structural properties show a clear transition between two regimes with qualitatively different behavior. Tubes 10 \AA{} and less in diameter beh…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLiving Radical Polymerization of Acrylates by Organocobalt Porphyrin ComplexesBradford B. Wayland, George Poszmik, Shakti L. Mukerjee, and Michael FrydCite this: J. Am. Chem. Soc. 1994, 116, 17, 7943–7944Publication Date (Print):August 1, 1994Publication History Published on…
The catalytic treatment of motor vehicle exhaust gas has been a feature of all passenger cars in the USA since the 1975 model year. It has since been adopted in all the developed countries as the principal means of con-trolling the emissions from vehicles powered by Otto-cycle internal com-bustion engines. These inclu…
This article presents measurements of piezoelectric coefficients of lead zirconate titanate (PZT) thin films. The normal load method is used to measure the coefficients for PZT films with various compositions prepared by the sol-gel technique or by organometallic chemical vapor deposition (OMCVD). The as-deposited OMC…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFluorescence and Absorption Spectroscopic Properties of Dipyrrometheneboron Difluoride (BODIPY) Derivatives in Liquids, Lipid Membranes, and ProteinsJan Karolin, Lennart B.-A. Johansson, Leif Strandberg, and Tor NyCite this: J. Am. Chem. Soc. 1994, 116, 17, 7801–7806Publicat…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSize-Selective Synthesis of Nanostructured Transition Metal ClustersManfred T. Reetz and Wolfgang HelbigCite this: J. Am. Chem. Soc. 1994, 116, 16, 7401–7402Publication Date (Print):August 1, 1994Publication History Published online1 May 2002Published inissue 1 August 1994ht…
Phenomenologically, a primary dopant for a conducting polymer is a substance, a relatively small quantity of which drastically changes the electronic, optical, magnetic and/or structural properties of the polymer and is accompanied by a large increase in conductivity. De-doping results in a reversal of the newly induc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTApplication of Carbon Nanotubes as Supports in Heterogeneous CatalysisJ. M. Planeix, N. Coustel, B. Coq, V. Brotons, P. S. Kumbhar, R. Dutartre, P. Geneste, P. Bernier, and P. M. AjayanCite this: J. Am. Chem. Soc. 1994, 116, 17, 7935–7936Publication Date (Print):August 1, 19…
Improved synthetic routes and size-selective precipitation have enabled the preparation of almost monodisperse CdS clusters. Six samples of 1-thioglycerol stabilized clusters with diameters of approximately 13, 14, 16, 19, 23, and 39 Å have been prepared as fully redispersible powders and were characterized by element…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConnection between Polymer Molecular Weight, Density, Chain Dimensions, and Melt Viscoelastic PropertiesL. J. Fetters, D. J. Lohse, D. Richter, T. A. Witten, and A. ZirkelCite this: Macromolecules 1994, 27, 17, 4639–4647Publication Date (Print):August 1, 1994Publication Hist…