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。
In the title coordination compound,[Cu（HDPPZC）（SO4）（H2O）]2 （1,HDPPZC=dipyrido[3,2-a：2,3-c]-phenazine-2-carboxylic acid）,has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction,elemental analysis and magnetic susceptibility measurement.It crystallizes in triclinic,space group P1 with a…
Nowadays one of the challenges of materials science is to find new technologies that will be able to make the most of renewable energies. An example of new proposals in this field are the intermediate-band (IB) materials, which promise higher efficiencies in photovoltaic applications (through the intermediate band sol…
Impact and flexural properties of flax fabrics and Lyocell Fiber reinforced bio-based thermoset for automotive and structural applications
Using high strength steel and ultra-high strength steel in hot stamping and automobile parts is one of the most important ways of the automobile lightweight,which is the development trend of automobiles currently.In this paper, the development of test device for heat friction coefficient by high strength steel can pro…
To clarify the mechanism of high brake thermal efficiency of HCCI combustion compared to SI combustion, the contributions of pumping loss, friction loss and gross indicated thermal efficiency were investigated. Also, independent effects of heat loss, specific heat ratio, heat release profile and combustion timing on g…
Superconductor Bi2Sr2Ca1Cu2O8 is prepared by solid state route and the substituent element La0.85Sr0.15MnO3 is prepared by sol-gel combustion route. Then the composite of BSCCO(2212) with LSMO having different composition are prepared by solid state route. X-ray diffraction of BSCCO(2212) sintered at 8800C for 12hrs a…
In the current trend for a more effective utilization of biomass, increased attention has been focused to the engineered exploitation of xylans as biopolymer resources in the development of new materials. The xylan backbone has an affinity to cellulose and will adsorb irreversibly on cellulosic surfaces, an inherent p…
Protium-deuterium isotope separation and tritium enrichment experiments have been carried out under the condition of a total reflux cycle using a continuous twin-bed hydrogen isotope separation technique, i.e., a twin-bed periodically counter-current flow technique. Two beds were packed with Pd and LaNi4.7Al0.3, which…
ZSM-5 zeolite was in-situ synthesized from metakaolin or spinel by incorporating additional silica and alumina sources, respectively. The ZSM-5 zeolite was characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy and N2 adsorption measurement. Thi…
Das Festwalzen ist ein spanloses, umformendes Verfahren zur positiven Beeinflussung der Randzoneneigenschaften eines Bauteils. Das Verfahren zeichnet sich dadurch aus, dass es als einziges mechanisches Verfahren zur Steigerung der Bauteillebensdauer sowohl eine Glattung der Ober¬flache, eine Induzierung von Druckeigen…
[Objective] To study the pharmacognostical characteristics of Rhaphidophora hongkongensis Schott.[Method] The cross-section of stem and leaf and the medicinal powder of Rhaphidophora hongkongensis Schott.were identified under microscope and their physiochemical characteristics were identified.[Result] Rhaphidophora ho…
La0.67Sr0.20Cu0.10□0.03MnO3 (“□” representing cation vacancy) polycrystalline manganite powder was synthesized by sol‐gel method, which we used as parent materials. After reduced in hydrogen atmosphere for 30 and 60 minutes at a temperature of 400°C, the series bulk samples were obtained by sintering in argon atmosphe…
There are an estimated 1.19 million wheelchair users in Spain. People use wheelchairs for a variety of reasons, the most common one is paralysis from spinal cord injuries. Current estimates indicate there are around 504,000 people alive in Spain with spinal cord injuries. Among other reasons for using wheelchairs are:…
Artykul ten przedstawia wplyw zmian w mikrostrukturze stali P91, powstalych w skutek obrobki cieplnej, na wlaściwości mechanicznego efektu Barkhausena (MeBN). Parametry takie jak amplituda obwiedni napiecia skutecznego (RMS) MeBN oraz polozenie maksimum tejze obwiedni porownywane są, pod kątem czulości na obrobke ciep…
Intense 2.7-μm emissions are obtained from Er3+/Nd3+ co-doped tellurite glass samples under the 808-nm laser diode excitation.According to the absorption spectra,Judd-Ofelt parameters and radiative transition probabilities are calculated and analyzed using the Judd-Ofelt theory.The spectroscopic properties and energy…
A new physical simulation model was developed to simulate the casting process of the ductile iron heavy section spent-nuclear-fuel container. In this physical simulation model, a heating unit with DR24 Fe-Cr-Al heating wires was used to compensate the heat loss across the non-natural surfaces of the sample, and a prec…
The effects of fuel properties including ignitability, volatility, and compositions on operational range and combustion characteristics of premixed diesel combustion with various high volatility model fuels and an ordinary diesel fuel were examined in a DI diesel engine. The IMEP was limited by knocking with high inta…
Five typical partial discharge (PD) models of oil-paper insulation are made in the article, time series of PD’s amplitude are fetched from the results measured, after being pre-processed, they are fitted by auto regressive (AR) model, the coefficients of the AR model are used as feature vector to recognize the five ty…
The electrochemically catalyzed oxygen reduction reaction (ORR) is essential to operation of most fuel cells and many types of batteries; oxygen, being prevalent in air, provides a costless, ambient, high-energy (1.23 V vs. normal hydrogen electrode) hole source to complete the electrochemical redox circuit. Oxygen ma…
The simultaneous reduction of NOx and PM is an urgent challenge for diesel emissions. In this paper, di-methyl ether (DME) was used as a NOx deoxidizer in a selective catalytic reduction (SCR) after-treatment system. With 574 grams of 2-3 mm diameter pellets of Ag(1wt%)-γAl_2O_3 in the cylindrical vessel of the SCR, t…