Materials Literature
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Article Crystal structure of {2-[(4-ethylphenyl)iminomethyl]-pyridine-k2N,N′}-dichlorozinc(II), Zn(C14H14N2)Cl2 was published on March 1, 2010 in the journal Zeitschrift für Kristallographie - New Crystal Structures (volume 225, issue 1).
MG1655 of Escherichia coli K-12 is frequently used in metabolic engineering as the wild-type strain. However, its two mutations, ilvG and rph-1 provide a negative effect on culture growth. The "polar effect" of rph-1 decreases the level of pyrE expression, causing partial auxotrophy for pyrimidines. Mutation ilvG lead…
Piezoelectric fibrous membranes of barium titanate (BTO) – polyvinylidene fluoride (PVDF) nanocomposites were studied. BTO nanoparticles of about 40 nm were synthesized by the sol-gel method and mixed in PVDF–dimethyl formamide solutions at 0, 0.1, 1 and 3 wt.% relative to the polymer weight. The suspensions were elec…
Detecting interharmonics in power system for flicker troubshooting is highly desirable. Whereas these interharmonics are close to harmonic or fundamental component, it is always swamped by the main-lobe of harmonic nearby if the harmonic amplitude is much bigger than interharmonic amplitude, and vice versa. In this pa…
O presente trabalho descreve o isolamento e a identificação de nove alcaloides indólicos monoterpênicos das cascas das raízes e folhas de Tabernaemontana salzmannii (Apocynaceae). As estruturas dos alcaloides foram identificadas através de métodos espectroscópicos uni (RMN ¹H, 13C, APT) e bidimensionais (¹H-¹H-COSY, ¹…
OBJECTIVES: The aim of the study was to explore (1) the synthesis of a novel poly(ethylene glycol) modified lipid (PEG-lipid, PL) containing a chemically active tri-block linker, epsilon-maleimido lysine (Mal), and its conjugation with salmon calcitonin (sCT), and (2) the biophysical properties and activity of the res…
We review high pressure phases of calcium which have obtained by recent experimental and first-principles studies. In this study, we investigated the face-centered cubic (fcc) structure, the body-centered cubic (bcc) structure, the simple cubic (sc) structure, a tetragonal P 4 3 2 1 2 [Ishikawa T et al. 2008 Phys. Rev…
Abstract A theoretical approach for an optical lens tip on a single-mode fiber end to improve power coupling from laser diode is presented in this work. The lens shape considered here is an ellipsoid. Based on scalar diffraction and Gaussian mode shapes for the laser and fiber fields, a theoretical model is developed…
Co-Ni coated ZrO2 composite powder was prepared by an optimized ultrasonic electroless plating process to obtain good microwave absorption properties in GHz region. Aggradation mechanism of electroless Co-Ni alloy was analyzed and the principal influencing factors on the depositing rate were investigated by weighting-…
InAlN/GaN heterojunction structures are grown on two-inch c-face(0001) sapphire substrates by metalorganic chemical vapour deposition. AlN and AlGaN interlayers are intentionally inserted into the structure to improve the electrical properties. The lowest sheet resistance of 359Ω/sq and the highest room-temperature tw…
An adequate emitter shape for a gas field ion source was investigated to obtain a higher angular current density, dI/dΩ. Single-crystalline ⟨111⟩-oriented tungsten emitters having a similar tip radius of curvature and a different taper angle of emitter shank were prepared by dc- and ac-electrochemical polishing. The t…
Americium is a key element to design the FBR based nuclear fuel cycle, because of its long-term high radiological toxicity as well as a resource of even-mass-number plutonium by its transmutation in reactors, which contributes the enhancement of proliferation resistance. The present paper deals with the numerical anal…
The thin Sn 2 Sb 2 S 5 films which are new absorber material useful for photovoltaic cells are studied in this paper by the photothermal deflection spectroscopic method. Our study consists to draw the experimental normalized amplitude and phase of the photothermal signal versus wavelength at a fixed modulated monochro…
We have developed high-pressure, high-field and multi-frequency ESR apparatus. The pressure is available up to 14 kbar by using the clamped-type piston-cylinder pressure cell. All inner parts of the pressure cell are made of zirconia which has good transmittance of the electromagnetic wave in the frequency region from…
induced phase transition of Lu 2 Ti 2 O 7 and Lu 1.5 Ce 0.5 Ti 2 O 7+x pyrochlores
The quasi-static compressive and dynamic compressive (SHPB) experiments were carried out to investigate the static and dynamic property of titanium alloy Ti6Al4V though analysis and comparison of the experiment results, the Johnson-Cook constitutive model of titanium alloy Ti6Al4V was established. The cutting process…
Several mass transport phenomena occur during the operation of a PEMFC each one generates a resistance implying limitations during operation. The humidity in the reactive gas flows promotes the conductivity of the electrolyte membrane but increases the transport limitations at high current densities. The reactive gase…
Vacuum Infusion is a closed mould manufacturing process that can replace open mould processes. To improve resin flow it is common to add flow enhancement layers to the reinforcement stack. The basic feature for all flow enhancements is a coarse micro structure with regions of low fibre content. Degradation of mechanic…
New metal complexes of the ligand 2-thioacetic acid benzothiazole with the metal ions Fe(III), Rh(III), Pd(II), Pt(IV) and Au(III) were prepared in alcoholic medium.The prepared complexes were characterized by FTIR Spectroscopy, electronic spectroscopy, elemental analysis, 1H NMR, 13C NMR, magnetic susceptibility and…
In this Paper we present growth and characterization results of highly oriented ZnO nanowires grown on wide bandgap GaN substrates. Experimental results on the ZnO nanowires grown on p-GaN are presented with growth morphology and dimensionality control. We also present experimental results on these nanowire arrays suc…