Materials Literature
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This publication gives a brief overview about recent applications with pulsed high power disc lasers in the nanosecond and femtosecond range. There is an increasing number of new high-tech materials like which are designed to special mechanical and electrical needs. Lasers gain increasing share in the processing techn…
PROTEKSI FISIK DAN IMPLEMENTASINYA DI REAKTOR RSG-GAS. Reaktor RSG-GAS merupakan salah satu fasilitas nuklir yang penting di Indonesia. Dalam pengoperasiannya digunakan bahan nuklir U235 sebagai bahan bakar. Reaktor RSG-GAS beserta bahan nuklir merupakan obyek strategis yang dapat menjadi sasaran sabotase dan pencuria…
Plastics Engineering is the official publication of the Society of Plastics Engineers (SPE). We provide plastics professionals with a wealth of information about machinery, technological advances, materials innovations, sustainability, and more.
Abstract The copolymer subject of study, [Poly(dimethylsiloxane-co-methylhydrosiloxane) was functionalized with quaternary ammonium salts by catalytic hydrosilylation. The structural characterization of the system was performed by 1H, 13C and 29Si NMR. The study in a polar solvent (ethanol) solution was carried out us…
PURPOSE OF THE STUDYThe aim of this prospective study was to investigate whether female gender and revision surgery were significant risk factors for intra-operative periprosthetic fractures during total hip arthroplasty (THA).MATERIAL AND METHODSThe group investigated comprised the patients who, in the period 1995-20…
In this study, alginate fiber prepared by electrospinning was crosslinked using CaCl2. In order to improve the spinnability, glycerol was added to the aqueous solution of sodium alginate. The solution containing glycerol exhibited the crossover point of G` and G`` at low frequencies and decreased the solution viscosit…
1H MR Spectroscopy is a promising tool for investigating heart disease. To achieve a good spectral quality, challenges like cardiac and respiratory motion and complex B0-field inhomogeneities must be addressed. The combination of image-based B0-shimming[1], ECG-triggering and navigator-gating[2] along with frequency-a…
Carbon nanotubes (CNTs) have remarkable mechanical, thermal, and, electrical properties, which has sparked considerable research interests for applications such as composites, electronic devices, sensors and, thermal interface materials.In the area of composites, it is critical to have proper dispersion to take advant…
Abstract : In this research we have developed 5 different catalyst formats capable of accelerating the rate of combustion cracking, oxidation and dehydrogenation reactions of jet type fuels. These include: 1) metal nanoclusters covered with a porous nano-oxide; 2) a nanometallic layer on an oxide nanocluster; 3) metal…
We report the observation of a nonlinear terahertz response of split-ring resonator arrays made of high-temperature superconducting films. Intensity-dependent transmission measurements indicate that the resonance strength decreases dramatically (i.e. transient bleaching) and the resonance frequency shifts as the inten…
Colossal magnetoresistance and field-induced ferromagnetism are well documented in manganite compounds. Since domain wall resistance contributes to magnetoresistance, data on the temperature and magnetic field dependence of the ferromagnetic domain structure are required for a full understanding of the magnetoresistiv…
ústav technologie obrábění, projektování a metrologie
Species concentration measurements specifically those associated with NOx can act as important validation targets for developing kinetic models to predict NOx emissions under syngas as well as natural gas combustion accurately. In this collaborative research effort that included both experimental measurements, model d…
Resumen presentado en XIV CNA
Organic thin films solar cells and plastic solar cells [1] have attracted the attention of the scientific community especially as regards the performance of new conjugated polymers including their interfaces [2-4]. In this work, poly(naphthalenediimidequaterthiophene) (PNDIT4) and poly(hexyilthiophene) (P3HT) have bee…
Basada en la revisión y el estudio al microscopio óptico de muestras colectadas en acuatorios dulciacuícolas de 472 localidades del país, se\nofrece una sinopsis de las especies del género Pinnularia (Bacillariophyceae). Finalmente se constata la presencia de 11 especies de este género en siete zonas geográficas de Cu…
페롭스카이트형 산화물을 마이크로파 공정으로 합성하여 XRD, XPS, BET 및 H2-TPR 등에 의해 특성분석을 하였고, 벤젠의 연소반응에서의 활성을 조사하였다. 대부분의 촉매들은 페롭스카이트 결정구조를 잘 가지고 있었으며 21 nm에서 35 nm의 크기를 나타내었다. LaMnO3 촉매가 가장 높은 활성을 보여주었고 250 ℃에서 거의 100%의 전환율을 나타내었으며, 마이크로파 공정으로 제조한 촉매가 기존의 졸-겔법으로 제조한 촉매에 비해 높은 활성을 보여주었다. 또한 소성온도가 증가함에 따라 연소반응의 활성이 증가하였다. 모든 촉매들의 산화환원 성질을 측정한…
Cet article présente l'état de l'art des enceintes en matériaux composites pour application sous-marine. Outre les domaines d'application, sont présentés le mode de fabrication, les bases de dimensionnement par rapport à la pression hydrostatique et les spécificités de la caractérisation expérimentale.
Resumen presentado en el XIV CNA
Les nanoparticules magnétiques ont ouvert des perspectives nouvelles en oncologie, aussi bien en diagnostic qu'en thérapeutique. Les produits dans lesquels elles interviennent ont des caractéristiques diverses. Ces dernières ont permis de développer des propriétés biologiques et physiques originales et utiles pour des…