Materials Literature
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Abstract It is shown that sol‐gel alumina calcined at 400 0 C is a very efficient catalyst for the epoxidation of cyclohexene and cyclooctene with aqueous 70 wt % hydrogen peroxide. The overall yield per g of catalyst was 0.28 mol of cyclohexene oxide in 5 cycles of 450 min each and 0.43 mol of cyclooctene oxide in 4…
Microscale Laser Shock Peening (LSP) is a technique that can be potentially applied to manipulate the residual stress distributions in metal film structures and thus improve the reliability of micro-devices. This paper reports high-spatial-resolution characterization of shock treated copper thin films on single-crysta…
The optical power spectrum of a signal externally modulated using a Mach-Zehnder modulator is calculated analytically. Optical power spectra are calculated for binary signals for which the drive signal has either raised-cosine or Bessel-filtered pulse shape as well as for duobinary signals created by Bessel filtering.…
Abstract Coordination-organized porphyrin dimers of 5,15-bis[2-(allyloxycarbonyl)ethyl]- and bis[3-(allyloxy)propyl]-20-(1-methyl-2-imidazolyl)porphyrinatozinc were covalently linked by an intramolecular olefin metathesis reaction in excellent yields (93–98%). It was found that the yields of the intramolecular metathe…
For many, the thought of terrorists detonating a dirty bomb--a radiological dispersal device--is frightening. However, the radiation health risks from such an occurrence are small. For most people directly involved, the exposure would have an estimated lifetime health risk that is comparable to the health risk from sm…
Abstract A novel cyan‐bridged macrocyclic nickel complex [{NiL 1 }{Fe(bipy)(CN) 4 }]2·5H 2 O 1 (L 1 = 3,10‐dimethyl‐1,3,6,8,10,12‐hexaazacyclotetradecane, bipy = 2,2‐bipyridine) was synthesized and structurally characterized. The complex exhibits one‐dimensional zigzag chain structures. Each ferrous(II) ion connects t…
Abstract Sorbed water molecules in PET (around 1% in mass) lead to classic plasticizing effects, basically evidenced by a decrease of the glass transition ( T g ) and of the cold crystallisation ( T c ) temperatures with increasing water content. During drawing of dry PET film and depending on the draw ratio, the init…
A tromino (rhymes with domino) is a shape made up of three 1 × 1 squares assembled as shown. Figure 1 A tromino We will classify a variety of nearly rectangular shapes into those that can be tiled by trominoes and those that cannot. From now on we will simply say tiled to mean tiled by trominoes. We will consider shap…
The presence of aluminum oxyhydroxide and its micromorphological characteristics in sclerotium grains were examined by SEM, TEM, and EDX analyses. A spherical fraction with a diameter of 100 nm, which contained C and Al as the predominant elements, was recognized as the unit particle of the matrix of sclerotium grains…
A test for evaluating oilfield corrosion inhibitors using ultrasound has been developed recently. This paper describes experiments that have been undertaken to try and determine some of the processes that occur at the electrode surface during the test. Measurements were taken with both polarization resistance and elec…
Oriented thin films of manganese sulfide ( MnS ) have been deposited by a simple chemical bath deposition (CBD) method, which was a soft solution-processing route for preparation of semiconductor thin films. By varying deposition conditions (e.g. bath temperature, concentration ratio of Mn 2+ ions to CH 3 – CS – NH 2…
Abstract This work gives an introduction into the thermodynamic modeling of polymer systems. After a short overview about the different basics of thermodynamic models, results obtained with the recently proposed PC‐SAFT equation of state are discussed exemplarily for systems containing polymers as well as copolymers.
Ferroelectromagnetic YMnO3 thin films have been deposited on Pt/TiO2/SiO2/Si substrates by pulsed laser deposition technique. It is found that only these films deposited in 10−3 Pa O2 and annealed in N2 ambient were well crystallized to a hexagonal YMnO3 single phase. Furthermore, the crystallization texture of YMnO3…
The Fe2CrSe4 compound was synthesized by the melt and annealing technique. Its structure has been refined by the Rietveld method using X-ray powder diffraction data. This compound crystallizes in the monoclinic space group I2/m (No 12) with a Cr3S4-type structure, and unit cell parameters a = 6.2314(1) Å, b = 3.5770(1…
The thermal decomposition of halogenated unsaturated polyester resins (UPRs), flame retarded by zinc hydroxystannate and cross-linked with styrene, has been investigated by thermogravimetry (TG) in both dynamic and isothermal mode, and by TG coupled on-line with Fourier transform infra red spectroscopy (TG-FTIR) or ma…
Caustic nuclear wastes have leaked from tanks at the US Department of Energy’s Hanford site in Washington State (USA) causing hundreds of thousands of gallons of waste fluids to migrate into the underlying sediments. In this study, four simulant tank waste (STW) solutions, which are high in NaOH (1.4 and 2.8 mol/kg),…
Thermal analysis of a lipid-like bilayer of [(CH 2 ) 9 (NH 3 ) 2 ]CuCl 4 indicates one minor transition at 303 K and the following five major ones (with entropies in J/K-mole): The initial magnetic susceptibility at 320 Hz and a magnetic field of 160 A/m in the temperature range 75 - 290 K revealed a Curie-Weiss behav…
Abstract Optical birefringence measurements for a calamitic lyotropic liquid crystal containing sodium lauryl sulphate/decanol/water are presented. A value of the order of 10 ‐3 was obtained, much smaller than that of thermotropic liquid crystals. The order parameter temperature dependence is evaluated using an extrap…
Shunsuke KobayashiJun XuHirokazu FurutaYuji MurakamiSatoru KawamotoMasafumi Oh-kouchiTokyo University of ScienceLiquid Crystal Institute and the GraduateSchool of Engineering ScienceYamaguchi, OnodaYamaguchi 756-0884, JapanHiroshi HasebeHaruyoshi TakatsuDainippon Ink. and Chemical Ind.Ina-machi, Kitaadachi-gunSaitama…
Drape is one of the most important fabric aesthetic properties. Although there are many studies related to the drape structure of seamless fabrics, knowledge about the drape behavior of seamed fabrics is very limited. This study analyzes the effect of five-thread overlock seams (stitch type 516, seam type Ssa-1) on th…