Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Fire fighters' protective clothing is designed to perform several functions. Of these, protection from heat and flame is one of the most important. Today's fire fighter protective clothing designs are based on years of field experience and research studies which addressed structural fires. Much of this work has concen…
Mesoporous zirconia is synthesized with anionic templates.
The synthesis of nanocrystalline zinc ferrite (ZnFe/sub 2/O/sub 4/) has been accomplished by a variety of chemical and mechanochemical techniques. An enhanced magnetization, 4-5 times that of bulk zinc ferrite, is observed for the nanoparticles regardless of the synthesis method. The hypothesis that the enhanced magne…
The likelihood of solving crystal structures from powder diffraction data is greatly enhanced if data collection and analysis strategies can be designed to effectively remove Bragg peak overlap. In this way, accurate normalised structure factors of essentially single-crystal quality are obtained. Such strategies are i…
Ambient temperature CO oxidation has been studied with Au/ZnO, Au/CuO and Au/CuO–ZnO catalysts prepared by a coprecipitation method. The catalysts are highly active for CO oxidation and are capable of sustained activity at 20°C. The highest activity is observed with Au/ZnO and this catalyst is shown, using transmissio…
Proton and lithium ion conducting polymer electrolytes, based on poly(vinyl alcohol)–H3PO4 and poly(ethylene oxide)–LiCF3SO3 plasticised with poly(ethylene glycol), have been used in the construction of electric double layer capacitors with both high density graphite sheet and activated carbon fabric electrodes. The p…
The dinuclear copper(II) complexes of formula [{Cu(Hdmg) 2 } 2 ] 1, [{Cu(Hbdmg)} 2 ][ClO 4 ] 2 2, [{Cu(Hdeg) 2 } 2 ] 3 and [{Cu(Hchd) 2 } 2 ] 4 (H 2 dmg, H 2 bdmg, H 2 deg and H 2 chd = dimethylglyoxime, 3,10-dimethyl-4,9-diazadodeca-3,9- diene-2,11-dione dioxime, diethylglyoxime and cyclohexane-1,2-dione dioxime) hav…
Subsolidus phase relationships in the Ga 2 O 3 –In 2 O 3 system were studied by X‐ray diffraction and electron probe microanalysis (EPMA) for the temperature range of 800°–1400°C. The solubility limit of In 2 O 3 in the β‐gallia structure decreases with increasing temperature from 44.1 ± 0.5 mol% at 1000°C to 41.4 ± 0…
A series of studies have been carried out on polyaniline (emeraldine base; EB) thin films deposited on glass substrates from aqueous solutions of polymerizing aniline (“in-situ” EB-I film). These films exhibit a Vis/UV spectrum in which the exciton peak has an absorption maximum at ~600 nm. Exposure of EB-I film to NM…
Oxidation of the C 3 organic compounds propane, propene, acrolein, propan-2-ol and acetone has been investigated over three transition-metal oxide catalysts, Co 3 O 4 , MgCr 2 O 4 and CuO, in a flow reactor and using FTIR spectroscopy to study the adsorbed species. Co 3 O 4 and MgCr 2 O 4 are very active in propane an…
The crystal structure of the perovskite Sr 2 FeTaO 6 has been refined by simultaneous analysis of X-ray and neutron powder diffraction data collected at 280 K; space group Pbnm, a=5.6204(3), b=5.6161(3), c=7.9266(3) Å. The structure is of the GdFeO 3 type, with a disordered distribution of Fe and Ta over the six-coord…
The effect of a tramp element Cu on the hot workability of steels was investigated in this paper. The number of surface cracks occurring in the specimens which were tensile-deformed after oxidized was measured to assess the effect of small amounts of Cu (0.3 %) and Ni (0.15 %) on hot workability. The microstructure of…
Образование Рё СЂРѕСЃС‚ углеродных наноструктур — фуллеренов, наночастиц, нанотрубок Рё РєРѕРЅСѓСЃРѕРІ, Лозовик Р®.Р•., РџРѕРїРѕРІ Рђ.Рњ.
1. Magnetostatic phenomena 2. Magnetic measurements 3. Atomic magnetic moments 4. Macroscopic experimental techniques 5. Magnetic disorder 6. Ferromagnetism 7. Antiferromagnetism and ferrimagnetism 8. Magnetism of metals and alloys 9. Magnetism of ferromagnetic oxides 10. Magnetism of compounds 11. Magnetism of amorph…
The title polymers 1 and 2 are synthesised via precursor polymers assembled by organometallic couplings using a Diels–Alder adduct of 2,6-dibromoanthracene.
Acetobacter xylinum produces both cellulase and bacterial cellulose, but some report believed that this cellulase activity does not decrease the degree of polymerization (DP) of bacterial cellulose during cultivation. A. xylinum subsp. sucrofermentans BPR2001 produces two enzymes that hydrolyze CM-cellulose and cellot…
Organic compounds in aqueous solution submitted to an ultrasonic irradiation behave differently according to their physical and chemical properties. In this work, degradation rate of phenol and carbon tetrachloride, has been studied at different frequencies, 20 kHz, 200 kHz, 500 kHz and 800 kHz. Whatever the frequency…
The {001}<210> texture, which is preferable for good magnetic properties in non-oriented electrical steel, is enhanced by the two-stage cold rolling method in which the intermediate annealing temperature is 640°C. The mechanism of {001}<210> texture development by two-stage cold rolling method was investigated by the…
Simulated ozone decomposition profiles in “pure” water were made using two analytical kinetic ozone decomposition models and contrasted with experimental and literature data. Fundamental and applied applications of ozone consumption models are presented, demonstrating the importance of both direct and indirect oxidati…
Strontium barium niobate, Sr0.6Ba0.4Nb2O6 (SBN40) ceramics were prepared by the mixed oxide route; specimens sintered at 1300 °C–1450 °C for 2–4 h had densities of ∼95% theoretical. The use of “conventional’’ conditions (1300 °C; ∼200 °C below the melting temperature) gave rise to a duplex structure comprising a mixtu…