Materials Literature
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The effects of quenching air temperature, quenching air speed and winding speed in the melt spinning process of poly(ethylene terephthalate) fibres with a titre of 147 dtex and 96 filaments on dye uptake were investigated. The ranges used for quenching air temperature, quenching air speed and winding speed were 17–27…
Polyaspartic acid derivative was prepared from polysuccinimide that was thermal condensation polymer of aspartic acid and aspartic acid.The property of scale inhibition and biodegradation of PASP-ASP were studied. The structure of polyaspartic acid derivative was characterized by means of FTIR.Calcium carbonate crysta…
Purpose: To develop a free and easy‐to‐use software program to model the x‐ray spectra emitted from x‐ray tubes. Such a program is useful for the education of physicists, technicians and technologists working in radiation physics but also as a research tool. Method and Materials: A Graphical User Interface (GUI) was c…
Research Article| June 01, 2009 Pearls and Corals: "Trendy Biomineralizations" Jean-Pierre Gauthier; Jean-Pierre Gauthier 1Centre de Recherche Gemmologique 2, rue de la Houssinière, BP 92208 44322 NANTES Cedex 3, France E-mail: jpk.gauthier@gmail.com Search for other works by this author on: GSW Google Scholar Stefano…
The charge/orbital ordering (COO) behaviors in the double-layered Pr(Sr x Ca 2- x )Mn 2 O 7 have been investigated by in situ transmission electron microscopy (TEM) observations. The experimental results reveal that two charge ordering (CO) phase transitions, so-called T co1 and T co2 , commonly exist in the orthorhom…
O processo de gelcasting, associado à aeração de suspensões cerâmicas, permite a produção de espumas cerâmicas com uma ampla faixa de porosidade (50-90vol.%). Uma das etapas críticas do processo é o enrijecimento da espuma, o qual se baseia na gelificação por meio da polimerização in situ de monômeros previamente adic…
Abstract An AA 7075 aluminum alloy with Zr and Sc additions was subjected to 6 – 8 passes of equal-channel angular pressing at 120, 170, and 220 °C in order to study the effect of the pressing conditions on the microstructural characteristics and the consequences for high-temperature mechanical properties. Using the m…
Abstract A series of C3-symmetric trialkanecarboxamido derivatives was synthesized via a triphenylmethane derivative. The triamides with short alkyl chains (1–6 carbons) crystallized as either prisms or plates, whereas those with long alkyl chains (7–11 carbons) formed gel-like objects composed of fibrous crystals wit…
Polyurethane has been one of the most important materials for automobile elastic parts such as bumper, head rest, instrument panel and so on since it covers very wide range of mechanical characteristics with low production costs. The processing variables such as formulation of ingredients and mold temperature, mixing…
In the present study thin films of CdS nanoparticle-polyvinyl carbazole (PVK) composite have been prepared using chemical method. The absorption spectra and electroluminescence of the films doped with different concentrations of CdS nanoparticle have been measured. The absorption of pure PVK film starts at 290 nm wave…
L’industrie agro-alimentaire produit une quantité importante de résidus, ou co-produits, dont certains sont potentiellement valorisables. Dans cette étude, les écailles de cacao, un résidu de la fabrication du chocolat, ont été étudiées comme support de biomasse dans un biofiltre aérobie à co-courant ascendant. L’infl…
Effect of boron on the electric and thermoelectric properties of SrTiO 3 has been studied. Boron-doped SrTiO 3 was prepared by vacuum annealing of SrTiO 3 single crystals in presence of boron vapors. The crystals show low resistivity ∼0.1 Ω∣cm and high Seebeck coefficient of several hundreds μV/K at a room temperature…
Atomic arrangements and electronic properties of two-dimensional C-based compounds having the diamondlike skeletons terminated with hydrogen atoms and/or hydroxyl groups, named graphane (poly-C2H2) and planar polymethanol (poly-C2OH2), have been investigated using first-principles calculations within the density funct…
Two novel 2,2′-biimidazole-thiophene structures, 5,5′-bis(2,2′-bithiophene-5-yl)-1,1′-dimethyl-2,2′-biimidazole and 5,5′-bis(3,4-ethylenedioxythiophene-2-yl)-1,1′-dimethyl-2,2′-biimidazole, have been synthesized and electrochemically polymerized. These materials underwent facile oxidation on Pt and ITO surfaces in CH…
Ordered mesoporous silica (MPS) is expected to be used as an adsorbent for energy-efficient desiccant cooling systems. For practical use, it is important to be able to fabricate thick MPS coatings on metal supports. As we reported previously, MPS coatings on metal substrates can be formed using the electrophoretic dep…
Solidification/stabilization (S/S) is considered to be a well-established disposal technique to reduce sludge handling and disposal obstacles. In this work, the sewage sludge was solidified at variable proportions with magnesium oxychloride cement (denoted as MOC therinafter) as reagent. The mortar prism samples of 40…
The paper investigates the EMC behavior of carbon nanotube interconnects, which are candidate to replace copper in future nanoscale technology. In particular, two problems are addressed: the influence of the kinetic inductance on the high-frequency behavior and the crosstalk performances of such interconnects. A recen…
In this study, tabular alumina and seawater magnesia were used to synthesize in situ Al2O3-MgO spinel castables. Secar® 71 cement was used as a binder. In order to produce in situ formation of Al2O3-MgO spinel castables, the effect of MgO content on refractory properties was investigated by adding to the mixture at th…
High-strength copper-nickel (Cu-Ni-Mn-Al-Nb) alloys are widely used for marine applications because of their excellent resistance to seawater corrosion, high inherent resistance to biofouling, and ease of fabrication. However, in-service experience has shown that these alloys may encounter variable performance worldwi…
Operating parameters of electric machines depend, among other things, on the parameters of magnetic circuit used in the machine…