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。
Abstract Three sets of expanded graphite‐filled polymers, having three different particle sizes, were reinforced with 1–5% by weight. The structural, mechanical, electrical, and thermal properties of these composites were studied and compared. After dispersion, the particles were reduced to nanometer size through exfo…
对Ti-4Al-4.5Mo合金经不同固溶温度淬火处理后的相组成进行了分析.结果表明,当合金在相变点以上温度淬火后,可以获得hcp结构α′马氏体;随固溶温度降低,淬火后斜方α″马氏体出现,并在一定的温度范围内与α′马氏体共存;在800℃淬火,α″马氏体消失,合金由α和β相构成;α″马氏体显著降低β转变组织的硬度.EDS分析表明,Mo含量并不是决定马氏体类型的唯一因素.
The synthetic condition in the preparation of TiO2 nanocrystals prepared from titanium tetra- n-butoxide (TTB) by using sol-gel route was optimized. The variables in this study were pH and temperature of hydrolysis reaction, ethanol concentration, and reaction mixture stoichiometry, and the effect of ultrasonic irradi…
A new 2D cadmium(II) thiocyanato complex, [CdL(NCS)2]n (L = 2-acetylpyridine), has been prepared and characterized by IR spectra and single crystal X-ray diffraction. The Cd atom in the complex is coordinated by one N and one acetyl O atoms of 2-acetylpyridine, and two N atoms and two S atoms from four different end-t…
Bulk and nano-sized NbTi(PO4)3 has been prepared by citrate gel pyrolysis using peroxo titanium complex as one of the reactants, and ethylene glycol as gelating reagent. The compound was analyzed by powder XRD and infrared methods. It is found to crystallize in rhombohedral lattice with space group . The infrared spec…
Design of the focusing lens system has been done by using SIMION computer program which is used to trace and simulate the ion beam during its transport. A parallel beam of singly charged nitrogen ions of diameter 2 mm with energy of 3 keV was started at a distance of 50 mm before entering the lens system. In order to…
In this Rapid Communication we present detailed band-gap profile in a ${\text{CuIn}}_{1\ensuremath{-}x}{\text{Ga}}_{x}{\text{Se}}_{2}$ thin-film solar cell absorber on nanometers scale. Details of the band bending and charge accumulation are resolved in simultaneous measurements of space-resolved photoluminescence spe…
News & View30 November 2010Open Access Metabolism gets lucky Tim F Cooper Corresponding Author Tim F Cooper Department of Biology and Biochemistry, University of Houston, Houston, TX, USA Search for more papers by this author Tim F Cooper Corresponding Author Tim F Cooper Department of Biology and Biochemistry, Univer…
Hydrodynamic nanotube extrusion is used to characterize chitosan-decorated vesicles, which are more robust to pH and salt shocks and exhibit specific behavior under osmotic pressure if compared to their bare homologues. The vesicle attached to a micro-rod is submitted to a flow. Above a threshold velocity, we observe…
The preliminary results from simulating the formation of electron clouds in the NICA collider using the ECLOUD program package are presented. Requirements for the acceleration chamber of the NICA collider for a gold nuclei beam are discussed.
The biological effects in vitro of two water soluble inclusions complexes of C60/ polyvinylpyrrolidone (C60/PVP) and C60/γ-cyclodextrin (C60/γ-CD), and also the crystalline C60 (as fullerene-covered surface) were studied. It was found that both the two inclusion complexes in the wide range of concentrations and the fu…
This study develops tight-fitting torso patterns for performance garments by taking into account the skin deformation generated directly from a 3D scan during arm movements. The skin deformation caused during the arm movements was scanned after scanning the skin surface stamped with a circle. To create a torso pattern…
이산화탄소와 에폭사이드를 크롬계 전이 금속촉매를 이용하여 교대 공중합하여 poly (cyclohexane carbonate) diol(PCCD)을 분자량 별로 제조하였다. 이산화탄소를 기반으로 한 폴리카보네이트(PCCD)의 응용분야 탐색을 위하여 수분산 폴리우레탄(PUD) 제조를 위한 전구체로 적용하여 보았다. 상업화되어 사용중인 폴리카보네이트 다올과 신규 PCCD로 제조한 PUD의 내스크래치 특성과 열적 특성을 비교 분석하였다. PCCD를 사용하여 제조된 PUD 필름의 내스크래치성과 열분해온도는 PCD를 사용한 경우보다 떨어지지만. 유리전이온도는 증가하는 것을 알…
This study provides improved wrinkle recovery and UV protection capabilities as well as an antibacterial and deodorizing function to linen fabrics for summer shirts. The results obtained from this study are as follows. By setting catalyst concentration to 1.2% and DMDHEU concentration to 6% respectively and applying a…
Catalytic N-oxidation of pyridine derivatives to related N-oxides were performed in the peresence of three organic salts of polyoxometalates including two heteropolyanion (THA)7.7H6.3[NaP5W30O110], 1, and (THPA)7.5 H6.5[NaP5W30O110], 2, and one isopolyanion [TBA]2[W6O19] (3) with W as central metal atom. Catalyst (3)…
Two new coordination polymers, [Mn(Bript)(2,2′-bipy)] (1) and [Mn(Bript)(phen)(H2O)](H2O) (2), were prepared through hydrothermal reactions of Mn(II) acetate with H2Bript (H2Bript = 4-bromoisophthalic acid), and the N-donor ligands 2,2′-bipy and phen (2,2′-bipy = 2,2′-bipyridine, phen = 1,10-phenanthroline). Both comp…
Y-Ba-Cu-O (YBCO) single grains have the potential to generate large trapped magnetic fields for engineering applications, and research on the processing and properties of this material has attracted interest world-wide over the past 20 years. In particular, the introduction of flux pinning centers to the large grain m…
Received 19 November 2010DOI:https://doi.org/10.1103/PhysRevB.82.209905©2010 American Physical Society
The effect of a mass gap on the conductance of graphene double-barrier heterojunctions is studied. By obtaining the 2D expression for the electronic transport of the low energy excitations of pure graphene through double-barrier systems, it is found that the conductivity of these structures does not depend on the type…
Retention factors (log kw ) in pure water were calculated for a homologous series of alkylbenzenes, PAHs, and aromatic monosubstituted derivatives for column C18, C8, and C4, using the numerical method based on the linear form of the Ościk's equation, which were correlated with the log kw values determined by the line…