Materials Literature
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Nanoparticlemetal oxide and gold represents a new class of important materials that are increasingly being developed for use in research and health related activities. The biological system being extremely critical requires the fundamental understanding on the influence of inorganic nanoparticles on cellular growth an…
Abstract A series of MSU-x wormlike mesoporous silica samples were synthesized using a new type of gemini surfactants [C n H2 n +1N+(CH3)2–CO2–(CH2)4–CO2–N+(CH3)2C n H2 n +1] ·2 Br (n = 12, 14, 16) at circumneutral pH and characterized using Fourier transform infrared spectroscopy, thermo gravimetric analysis, X-ray d…
Cast aluminium alloys often contain microstructural defects resulting from the casting process such as porosity. Developments of Lost foam casting (LFC) process is considered as one of the most rapid in casting technology owing to its unique advantages on energy savings and capabilities to produce castings with thin s…
Nanocomposite films of poly (9,9-dioctylfluorene) (PFO)/Al2O3have been prepared by blending the conjugated polymer solution with alumina nanoparticle dispersion in common organic solvent and investigated in terms of the optical property. A blue shift of the photoluminescence (PL) spectrum for the as fabricated PFO/Al2…
By controlling the comonomer composition, the use of emulsion polymerization and in the condition of a certain stirring rate, a reaction temperature and a reaction time, the synthesis of a novel water-soluble acrylic acid compounds is produced. We also studied the adhesion of the acrylic copolymer T/C yarns, as the te…
금속질산염과 염화금산을 전구체로 사용하여 다양한 금속산화물( $$Al_{2}O_{3}$ , ZnO, $Fe_{2}O_{3}$ , $Cr_{2}O_{3}$ , $MnO_{2}$ , CuO, NiO, $Co_{3}O_{4}$ )에 담지된 금촉매를 공침법을 이용하여 제조한 후, 일산화탄소 산화반응에서 수분첨가의 영향을 검토하였다. 이들 중 $Co_{3}O_{4}$ 와 ZnO에 담지된 금촉매가 일산화탄소에 대하여 높은 활성을 보여주었다. 반응가스 중에 수분이 첨가될 때 Au/ $Co_{3}O_{4}$ 촉매는 활성이 약간 감소하였으나, Au/ZnO 촉매에서는 활성이 크게 증…
Uromodulin is the most abundant protein secreted in urine, and the mutated form of the uromodulin gene is associated with uromodulin-associated kidney disease (UAKD). Although uromodulin accumulates in the kidney of UAKD patients, it is unclear whether this is the wildtype or mutant form. In this study, we established…
Abstract The title compound is prepared by reaction of the elements in an NaCl flux (La:S:Se = 1:1.9:0.1; glassy carbon crucible in a sealed silica tube, 850 °C, 7 d).
The critical material of photo-anode, the TiO2nano-particles, as the most important component in dye sensitized solar cells (DSSCs) was studied in this paper. The TiO2nanoparticles were prepared by the method of micro-emulsion. In the process of preparation, the factors including the kinds of surfactant, and the molar…
For the purpose of improving the reproducibility and the semiconductor properties of chalcopyrite CuInS2 thin film, potassium hydrogen phthalate (C8H5KO4), as a complex agent, was added into the sulphate bath system. The optimum process parameter for the preparation of CuInS2 thin film was determined by orthogonal exp…
The rheological behavior of plant flour reinforced thermoplastics composites is very important to practical industry, however few research especially research about bamboo flour reinforced polypropylene(PP) composites is available regarding rheological field. In this paper, the torque rheometer made in Shanghai was us…
Sampling the doubtful contaminated soil and rocks by the way of grid layout along the Yangtze River and Jialing River, near some hospitals and factories in the urban area of Chongqing, and measuring the samples specific activity of radionuclide 226Ra, 232Th, and 40K. Analyze the radioactive levels of doubtful contamin…
CAS2-Al2O3 (Anorthite-alumina) refractory materials were prepared with magnesium slag, kaolin from Shanxi province of China and alumina as raw materials. The effects of sintering temperature, holding time and the rate of heating on the microscopic structures were investigated. The results showed that the sintering tem…
In this article, new tussah silk fibroin films with nano-Mg(OH)2were prepared. The composite films were characterized by SEM、DSC、TG、and IR. The experiment showed that the nano-Mg(OH)2particle was dispersed in the regenerated silk fibroin. DSC revealed that the Tmof the composite films was increased. TG showed stabilit…
A novel methodology of multi-exponential kinetic data processing was developed and tested for the reduction of hemoglobin on pyrollytic graphite.
50 $cm^2$ 의 활성면적을 가진 셀을 이용하여 5-셀 DMFC 스택을 제작하고 4 A의 부하로 4,000 시간 운전한 후 성능감소 및 성능 감소 원인을 분석하였다. 4,000 시간 운전 후 10 A에서 스택의 전력 밀도가 28.7% 감소하였으며 다섯개의 셀 중 두 개는 거의 성능저하가 일어나지 않았고 두 개는 약 40%의 성능 저하, 한 개는 약 60%의 성능 저하를 보였으며 각 셀별 성능저하의 정도의 차이는 스택 내에서의 위치와 상관관계가 없었다. 스택 내의 다섯 셀 중 가장 성능감소가 심하였던 셀의 경우 연료극 촉매층의 Pt 입자 크기가 증가하였으며 연료가…
Luminescence behaviors and morphology of Eu3+doped hydroxyapatite synthesized under different pH values were well investigated by X-ray diffraction (XRD), scanning electronic microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Inductively Coupled Plasma (ICP) (ICP–PLASMA 1000), and photoluminescence (PL) spectro…
The effectiveness of the VVER-1000 reactor scram system is analyzed using ionization chamber currents with different sets of kinetic parameters with allowance for the isotopic composition in the calculation of these parameters. The most “correct, aesthetically acceptable” results are obtained using the eight-group con…
Abstract Die statische Berechnung von Kranbahnträgern verlangt bereits für geringe Kranbahnträgerbelastungen unverhältnismäßig große Querschnitte für die Doppel T‐Träger. Das wiederum ergibt die eindeutige Aussage, dass mit dieser Stahlbau‐Profilreihe keine optimierbaren Querschnitte bei anzustrebender Grundforderung…
In order to improve the cycling performance of LiMn2O4, a part of Mn in LiMn2O4 was replaced by Ni. LiNi y Mn2 − y O4 (y = 0.02, 0.05, 0.10, 0.15, and 0.20) were synthesized by preheating a mixture of LiOH, MnO2 (CMD), and NiO at 400°C for 10 h and then calcining at 850°C for 48 h in air with intermediate grinding. Th…