ChemInform Abstract: The Utilization of Rice Husk Silica as a Catalyst: Review and Recent Progress
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Study on the identification and bio-corrosion behavior of one anaerobic thermophilic bacterium isolated from Dagang oil field
A slightly curved rod strictly anaerobic, thermophilic bacterium, was isolated from Dagang oil field, China. Its fundamental physiology and corrosion characteristic were analysed. The strain BF4 was Gram-positive. The growth occurred at 45-78°C (optimum was 60°C) and pH 4.5-9.5 (optimum was 7). Substrates could be use…
Waveguide Grating Radial Polarizer for the Photolithography of Circularly Symmetrical Optical Elements
A radially periodic slab waveguide grating of concentric circular lines composed of a corrugated quartz substrate and a ZnS waveguiding layer under the condition of normal incidence$ \hbox{TE}_{0}$mode coupling at the 442-nm wavelength of a circularly polarized HeCd laser exposure beam causes a close to 100% reflectio…
Green oxidation of 2-imidazolines with tert-butyl hydroperoxide catalyzed by supported manganese(III) porphyrin in water
Green oxidation of 2-substituted imidazolines with tert-butyl hydroperoxide catalyzed by tetraphenylporphyrinatomanganese(III) chloride, [Mn(TPP)Cl], supported on polystyrene and silica bound imidazole is reported. A variety of 2-imidazolines were efficiently converted to their corresponding imidazoles by these cataly…
Flexibility of Hydrogen Bond and Lowering of Symmetry in Proton Conductor
In order to investigate why crystal symmetry lowers with increasing temperature by phase transition of TII–III (=369 K) in Cs3H(SeO4)2, in spite of the fact that crystal symmetry in the high-temperature phase of many ionic conductors becomes higher by the phase transition, we have studied the relation between the chan…
Analytical model of laminar composites having fibre reinforced polyester faces and a polypropylene honeycomb core; experimental testing of the model; pp. 245–251
Experimental study of deformation behaviour of sandwich structures with a honeycomb core in the cases of quasi-static loading was carried out. The object of investigation was the static bending of the sandwich composite used for safety important structures made of woven glass fibre and polyvinylester resin composite f…
3D Rotem failure criterion for fibrous laminated composite materials: Comparison with experiments
Experimental test results of 12, three-dimensional loading cases, on laminated fibrous composite materials were provided by the organizers of the second world-wide failure exercise. These test results were compared with the three-dimensional Rotem failure criterion. These experimental data had been taken from differen…
Contribution to the Modelling of the Tribological Surface Transformations
When solids are subjected to tribological loads, structural changes can occur both at the surface and in depth, immediately below the loaded area; in the case of some materials, especially metals, these changes are known as solid-solid phase transformations or Tribological Surface Transformations (TSTs). A thermomecha…
Highly Accelerated Life Testing of Embedded Planar Capacitors With Epoxy-${\rm BaTiO}_{3}$ Nanocomposite Dielectric
Highly accelerated life testing (HALT) was performed on embedded planar capacitors by subjecting these devices to elevated temperature and voltage aging conditions. The dielectric material of these capacitors was a nanocomposite of epoxy and BaTiO3. The objective of HALT was to model the time-to-failure as a function…
Doubly Hydrogen Bonded Dimer of δ-Valerolactam: Infrared Spectrum and Intermode Coupling
We report here the vibrational analysis of the infrared spectrum of doubly hydrogen bonded dimer of δ-valerolactam measured in CCl4 solution at room temperature (22 °C). The compound shows an equilibrium of population distributed over the monomer and doubly hydrogen bonded dimer, which is manifested by the isosbestic…
Measurements and Simulations of Surfactant's Impact on the Conductivity and the $\hbox{1}/f$ Noise in Percolation Carbon Nanotube Networks
In this paper, we present a study of 2-D carbon nanotube (CNT) thin films. Conductance and 1/fnoise have been experimentally and theoretically investigated. Experimentally, after fabrication and characterization of 2-D films, we have established that the percolation process is the primary physical mechanism influencin…
Electric double‐layer capacitor module with series‐parallel reconfigurable cell voltage equalizers
Abstract When electric double‐layer capacitors (EDLCs) are connected in series, a cell voltage imbalance occurs due to nonuniform cell properties. Cell voltage imbalance should be minimized to prolong cycle lives and maximize the available energy of cells. In this study, we propose a series‐parallel reconfigurable cel…
Science to Practice: Can Macrophage Infiltration Serve as a Surrogate Marker for Stem Cell Viability?
Following in vivo prelabeling of host macrophages with ultrasmall superparamagnetic iron oxide (USPIO) nanoparticles, it was shown that their magnetic resonance (MR) imaging–visible migration into knee implants of scaffolded adipose-derived stem cells (ADSCs) undergoing apoptosis can serve as a surrogate marker of ste…
Luminescence and deep-level transient spectroscopy of grown dislocation-rich Si layers
The charge deep-level transient spectroscopy (Q-DLTS) is applied to the study of the dislocation-rich Si layers grown on a surface composed of dense arrays of Ge islands prepared on the oxidized Si surface. This provides revealing three deep-level bands located at EV + 0.31 eV, EC – 0.35 eV and EC – 0.43 eV using the…
Layered Titanium Disilicide Stabilized by Oxide Coating for Highly Reversible Lithium Insertion and Extraction
The discovery of new materials has played an important role in battery technology development. Among the newly discovered materials, those with layered structures are often of particular interest because many have been found to permit highly repeatable ionic insertion and extraction. Examples include graphite and LiCo…
Entanglement in a three spin system controlled by electric and magnetic fields
We study the effect of electric field and magnetic flux on spin entanglement in an artificial triangular molecule built of coherently coupled quantum dots. In a subspace of doublet states an explicit relation of concurrence with spin correlation functions and chirality is presented. The electric field modifies superex…
Ab initiostudy of the phonon spectrum, entropy and lattice heat capacity of disordered Re–W alloys
The Re(1-x)W(x) alloy is formed by continuous neutron bombardment of W, the core material making up the shield in fusion devices. Here, we present an ab initio study of the lattice dynamical properties of this commercially important alloy. The dynamical (force constant) matrix was obtained through a first-principles,…
Synthesis and characterization of polysulfone-g-poly(2-alkyl-2-oxazoline)s
Novel amphiphilic graft copolymers of polysulfone (PSU) possessing hydrophilic poly(2-oxazoline) (POx) side chains were synthesized via the ‘grafting from’ method. The cationic ring-opening polymerizations of 2-methyl-2-ozaxoline, 2-ethyl-2-ozaxoline, and 2-propyly-2-ozaxoline were initiated by chloromethylated polysu…
Synthesis of Heterogeneous Copper Catalyst Based on Amino‐Functionalized Triazine Rings Supported by Silica‐Gel for Oxidation of Alcohols
Amino‐functionalized triazine supported on silica‐gel was prepared. This new triazine derivate was applied as a coordinating agent for copper (II) and was characterized by different methods. The copper (II) content of the material was determined by atomic absorption. This novel transition metal supported on heterogene…
Enhanced Electrochemical Performance of MoS2 for Lithium Ion Batteries by Simple Chemical Lithiation
Abstract Commercial MoS2 was lithiated by soaking in butyllithium in argon atmosphere. The lithiated samples (LixMoS2) exhibited greatly improved electrochemical performance. LixMoS2 showed a high reversible capacity of 669.5 mAh g‐1 and excellent cycling stability, with an average capacity loss of merely 0.065% per c…