Materials Literature
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Organic hydrogen carriers show a great potential as future energy storage systems. Limitations of the dehydrogenation step due to thermodynamic limitations are one of the major challenges. Based on the reaction equilibria for some example compounds the feasibility of certain substance classes is discussed.
Photochemical modification of diamond was carried out by covalently bonding the radicals of 2-propanol-2-yl [(CH3)2C*OH] on the surface of diamond, which were produced by the photochemical disintegration of 2-hydroxy-2-methyl-1-phenyl-1-propanone irradiated by ultraviolet rays. A dispersion of diamond was prepared in…
One novel cadmium-tartrate compound exhibiting three-dimensional chiral structure, namely {[Cd3(TTA)3(H2O)](H2O)2}n (1) (H2TTA = tartaric acid), was obtained by the reactions of the cadmium salts with corresponding H2TTA under hydrothermal conditions and characterized by X-ray single-crystal diffraction and elemental…
Mn-doped Ba1-xSrxTiO3 (BST) ceramic powder had been successfully prepared by sol-gel process.The formation process of Ba0.4Sr0.5Mn0.1TiO3(BSMT) was tested through thermal analysis (TG-DTA) and X-ray diffraction.The electrical properties and microstructure of Mn-doped BST showed that manganese, which was doped at the A…
Boilers (Boiler) is a major component in the plant in which there are pipes steam boiler that serves to drain the water to be heated by the flame or hot gases to be steam. Boiler pipes are arranged into a single entity, starting from the steam drum, the combustion chamber (furnace / burner), superheater and economizer…
The biological mechanism of the physiological function such as the enzymatic reaction is well understood by studying protonation states of the catalytic polar amino acid residues, which can be identified by neutron protein crystallography. It is proposed that the protonation states should be systematically discussed f…
A laser-induced liquid jet system for surgery and other medical applications is fabricated by using a hollow optical fiber that transmits Er:YAG laser light for liquid jet generation. Since water has an extremely high absorption coefficient at the wavelength of Er:YAG laser light (λ = 2.94 μm),highpressure liquid jet…
Solid polymer electrolyte (SPE) composite films of PVA-CN-HOBt-LiClO4 doped with TiO2 were prepared by solution casting method. The films were characterized using FT-IR, UV-Vis, DSC and Dielectric studies at room temperature. The FTIR results show the interaction of TiO2 nanoparticles with PVA-CN-HOBt-LiClO4 composite…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Madhusmita Baral, Soma Banik, Tapas Ganguli, Aparna Chakrabarti, A. Thamizhavel, D. M. Phase, A.…
Organic/inorganic polymer composite films containing poly (methyl-methacrylate) (PMMA)/ ferric oxide Fe2O3 were prepared following solution casting technique. Dielectric Properties of films has been studied using LCR meter at room temperature 26°C. Also optical properties have been studied using digital abbey refracto…
SUS304ステンレス鋼に各種塩の希薄水溶液を塗布した試料を大気環境を模擬した相対湿度90％，60℃の恒温恒湿環境に保持し，不働態皮膜を光電子分光法にて解析した．不働態皮膜の厚さとCr濃度は微量塩類の影響を受けた．この環境中で，ステンレス鋼表面に生成する水薄膜の厚さは塗布した塩の飽和溶液の平衡相対湿度に対応して変化するとみられる．すなわち低い平衡相対湿度の塩を塗布した試料ほど厚い水膜を生成し，その結果Feの選択溶解が進行し，よりCr分率の大きな不働態皮膜を形成する．塩化物はCr濃縮を促進するが，高濃度となると局部腐食を発生した．塩化物を塗布した場合，生成する不働態皮膜は条件次第では高い耐局部腐食性を示すことがあった．硫酸塩もFeの…
Magnetostructural correlations in antiperovskite manganese nitrides Mn3AN（A ：metal or semiconducting element）are briefly reviewed based on the recent experiments on thermal expansion, crystal structure, and magnetization. This class of nitrides is attracting great attention because of the giant negative thermal expans…
В работе представлены результаты изучения механизма переноса кислорода в слоистых никелатах со структурой РаддлсденаПоппера и их нанокомпозитов с твердыми электролитами Сe0.9Gd0.1O2 - (GDC) и Y2(Ti0.8Zr0.2)1.6Mn0.4O7 - (YTZM) со структурой флюорита и пирохлора методом изотопного гетерообмена кислорода в проточном и с…
A sucata de ao galvanizado gerada na Usiminas totalmente reciclada nos convertedores das aciarias da Usina de Ipatinga. Essa sucata contm quantidade significativa de zinco que, devido sua alta presso de vapor, liberada durante o sopro no convertedor. O zinco na forma gasosa, juntamente com outros gases e ps, so captad…
The dielectric properties (Dielectric constant '' and Dielectric loss 'Tan') of a Neodymium and Chromium co-doped Gadolinium Scandium Gallium Garnet (Gd 3 Sc 2 Ga 3 O 12 :Nd 3+ :Cr 3+ ) single crystal were measured in the frequency range from 1 kHz to 1 MHz and in the temperature range from room temperature to 700 o C…
Magnetic properties of Co2MnSi thin films of 20 nm and 50 nm in thickness grown by radio frequency sputtering on a-plane sapphire substrates have been studied. X-ray diffraction (XRD) revealed that the cubic <110> Co2MnSi axis is normal to the substrate and that well defined preferential in-plane orientations are pres…
Nucleoside diphosphate kinase (Ndk) is ubiquitous and highly conserved multifunctional key enzyme in nucleotide metabolism. It generates nucleoside triphosphates (NTPs) by transfer of gamma-phosphates from nucleoside triphosphates such as ATP or GTP to nucleoside diphosphate. The formation of an autophosphorylated enz…
Carbide-free bainitic steel is a typical high-strength steel and it is very sensitive to hydrogen embrittlement. Studies have shown that the hydrogen embrittlement in bainitic steels was decreased by the addition of aluminium. However, hydrogen embrittlement still exists in these steels. The in-situ tension in transmi…
The femtosecond dynamics of the Fermi surface of DyTe3 and its band structure are investigated by time- and angle-resolved photoemission spectroscopy. We directly monitor the ultrafast collapse of the charge density wave gap within 200 fs.
Starch was polymerized with methacrylic acid (MAA) to different magnitudes of poly (MAA) using potassium persulphate/sodium thiosulphate redox initiation system. The polymerization products are referred to as “composite”. The latter consists of poly (MAA)-starch graft copolymer, poly (MAA) in the form of homopolymer,…