Materials Literature
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Near-field underwater explosion bubble is coupled with a ship's hull,and free surface of liquid due to a prodigious buoyancy exerted on it. This problem can't be solved with theory or numerical methods,due to the complexity of boundaries and the sensitivity of bubble breaking to controlling parameters. The similarity…
Nitrogenation of Sm Fe10Mo2 powders was performed in a self-made furnace under a high-purity N2 atmosphere up to 40 MPa at 500 °C. Upon nitrogenation at atmospheric pressure, the lattice parameters a and c increase by0.5% and 2.7%, respectively, whereas the Curie temperature TCincreases from 519 to 633 K. With further…
The interaction between a novel anionic gemini surfactant containing a triazine ring, denoted as C8-G, and cetyltrimethylammonium bromide (CTAB) has been investigated in aqueous solution. The surface tension vs log. molar concentration plots of the individual surfactants and their mixtures were measured at different t…
We have designed a novel nerve guidance conduit(NGC) made from silk fibroin and poly(lactic-co-glycolic acid) through electrospinning and weaving(ESP-NGCs). Several physical and biological properties of the ESP-NGCs were assessed in order to evaluate their biocompatibility. The physical properties, including thickness…
In this work, we report the synthesis of AB2 shaped amphiphilic azo block copolymer by macromolecular azo coupling reaction. The product and intermediates were characterized by various methods. The selfassembly in selected solvents and photo-responsive behavior of the copolymer were studied by means of UV–vis spectrop…
Insufficient visible-light power conversion has been a great challenge for nanotitania photocatalysts in solar energy utilization.Recently,a new material—black Ti O2 has attracted enormous attention due to its greatly enhanced solar absorption and photocatalytic activity. Our group has made tremendous contributions to…
A method based on internal standard is pro- posed to correct the thermal neutron self-shielding effect of aqueous samples containing elements with large thermal neutron absorption cross-section using prompt gamma-ray neutron activation analysis. The experiments for determi- nation of boron and cadmium dissolved in wat…
-hybridized 结构。可能的二拍子的圆舞机制，包含在石墨层和一个随后的 lithiation 过程的边附近被套住的否定费用，被建议在石墨夹层内解释锂的插入。如果必要，现在的脱落能被重复并且更薄(单身者或 23 层) graphene 能在大规模上被完成。这个简单过程为太古的石墨的脱落提供一个有效过程，它可能支持 graphene 的未来应用程序。
Four coordination polymers,Co( aip)( py)3( 1),Co( aip)( 4,4'-bipy)( 2),Mn( aip)( 4,4'-bipy)( 3) and Mn( aip)( dptz)( 4) [Py: pyridine; 4,4'-bipy: 4,4'-dipyridyl; dptz: 3,6-bis( 4-pyridyl)-1,2,4,5-tetrazine] were synthesized by the reaction of 5-azidoisophthalic acid( H2aip) and auxiliary ligands with transition metal.…
Effect of heat treatment processes on the microstructure and mechanical properties of a medium carbon low alloy steel was studied by means of color metallography, XRD and mechanical tests.The adopted heat treatment processes included air quenching and then austempering in salt bath, watercooling and then austempering…
The difference of sintering crunodes of metal powders and fibers is discussed. The mathematical model of the surface diffusion described by the difference in mean curvature is defined as a Hamilton-Jacobi-type equation, and the model is numerically solved by the level set method. The three-dimensional numerical simula…
Na+doped WO3 nanowire photocatalysts were prepared by using post-treatment(surface doping) and in situ(bulk doping) doping methods. Photocatalytic degradation of Methyl Blue was tested under visible light irradiation, the results showed that 1 wt.% Na+bulk-doped WO3 performed better, with higher photoactivity than sur…
一条灵巧、一般的线路到 polyaniline (PANI ) 的新一代柠檬性的酸(CA ) 晶体象 2D nanoplates， 2D nanosheets 和由自我装配的 3D microrods 那样 - 叠相互作用被报导。戏剧， 3D 矩形的塑造的 microrods 和 2D nanosheets 是 SAED 模式和 HRTEM 图象显示的单个晶体。而且，方法不取决于任何特定的设备或加热，冷却并且复杂过程。新奇 polyaniline 晶体将为下一代是有用的器官的电子学象 nano 晶体管那样。
Composite sheets of carbon nanotubes- cellulose fibers were made by suction filtration method with cellulose fibers as matrix and graphitized CNTs as electroconductive agent. The products were characterized by scanning electron microscopy, shielding effectiveness, four- point probes, and while the effect of carbon nan…
An abnormal fluorescence intensity ratio(FIR) between two green emissions of Er3+ at room temperature, which is larger than a normal value, emerged in many reported articles. However, up to now detailed work has seldom been done to clarify this abnormal phenomenon. In this paper, green upconversion luminescence of the…
Sb-doped Sn O2（ATO） thin films have been prepared using the spin coating method by selecting the proper amount of acetylacetone as solution modifier. All ATO powders and films exhibited the cassiterite rutile-like structure in a crystal size below 10 nm under all the experimental conditions and a nonpreviously reporte…
We present results of the synthesis of cobalt nanorods using the polyol process and the mechanism of magnetization reversal. We show that the nucleation step is significantly dependent on the nature of the ruthenium chloride used as the nucleating agent. This allows varying the diameter and aspect ratio of the cobalt…
Forged 316 LNSS has been selected as the main pipe line material used in the third generation nuclear power plants. The oxide scale formed on the forged 316 LNSS after immersion in high temperature pressurized water with 2.3 mg/L of dissolved hydrogen(DH) was studied using scanning electron microscopy(SEM), X-ray diff…
半固体粉末滚动是生产过程的脱衣，它把粉末滚动与在准备高效的金属性的脱衣的一个步骤滚动的半固体相结合。7050 铝合金脱衣的一个总数被半固体粉末滚动准备然后过去常学习处理以后的过程并且评估 treated 以后脱衣的质量。包含 sintering， pre-sinteringcold deformationsintering，并且热滚动的三个处理以后的过程习惯于卷的半固体粉末剥去的过程。结果证明毛孔和 densification 胀大的那两个发生在期间固态 sintering 当 microhardness 增加时。在密度的减少由于毛孔胀大比 densification 的在密度变化上有更大的效果。相对密度在 pre-sinteri…
高张力的腐蚀行为上的微观结构变化的效果低合金(HSLA ) 钢被调查。腐蚀产品层的保护的性质也被探索。试验性的结果表明微观结构的类型在 HSLA 钢的腐蚀抵抗上有重要效果。重量损失， potentiodynamic 极化曲线，和电气化学的阻抗光谱学的测量结果显示有针状的铁酸盐微观结构的钢展出最低腐蚀率。马氏体与多角形的铁酸盐相比展出一个减少的腐蚀电阻。腐蚀产品一致地盖住的针状的铁酸盐标本的表面比另外的二微观结构的那些看起来更稠密、更紧缩，这被发现，并且能提供保护的某数量给钢；因此，针状的铁酸盐标本的费用转移抵抗和模量价值最大。然而，马氏体上的腐蚀产品和多角形的铁酸盐通常松开、多孔、有缺点，并且能提供次要的保护；因此，为多角形的铁酸…