Materials Literature
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Pantothenate synthetase (PS), the key enzyme in the biosynthesis of the pantothenate acid, is considered to be a new target for anti-tuberculosis drug development. Based on the structure of the enzyme catalyzed reaction intermediate and bioisosterism principle, 5'-O-{[(R)-4-fluoro-2-hydroxy-3,3-dimethylbutanoyl]sulfam…
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Ten new steroidal molecular tweezers were efficiently synthesized via a method employing microwave irradiation by using chenodeoxycholic acid as spacer and Schiff base unit as arm through the condensation of amines and different aromatic aldehydes. Compared with a conventional method, the yields were increased from 30…
The two dimensional Fokker Planck equation is used to describe the time evolution of energetic beam of ions under the effect of dynamical friction and diffusion in velocity space, in a background plasma. The equation is simulated using the Fokker Planck package (FPPAC 81) to obtain the slowing down distribution functi…
Flattop broadband wavelength conversions based on difference frequency generation were fulfilled by utilizing step-segmented quasi-phase matched gratings.For the same waveguide length,high conversion efficiency,flat response and broad signal bandwidth can be obtained simultaneously by adding the segment number of quas…
Natural fibres such as flax and hemp fibres are mainly used in the textile industry, but have outstanding mechanical properties. These natural fibres have a great potential as reinforcement in cementitious composites, as an alternative to synthetic microfibres. The multiple cracking capacity of cementitious composites…
通过溶剂热合成法，以乙酰丙酮镍和正十二胺为起始原料，制备了纳米花球状（-Ni（OH）2。利用X射线衍射分析（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM）和氮气吸脱附分析等方法对材料进行了分析和表征。结果表明，所得材料为均匀的纳米花球状颗粒，由片层褶皱组成。所合成的（-Ni（0H）2具有中孔结构，孔径分布在4．7nm左右，BET比表面积高达302m2·g^-1。
We deposited SiCN thin films by RF plasma CVD (Chemical Vapor Deposition) method using a mixture of Tetramethylsilane (TMS), nitrogen, and hydrogen gas. Deposited films were measured some properties with Fourier-Transform Infrared Spectroscopy (FT-IR), X-ray Photoelectron Spectroscopy (XPS), Ellipsometry and Atomic Fo…
Recently, we reported that the localized surface plasmon resonance (LSPR) could strongly affect to the nonlinear light scattering from a single gold nanoparticle. The saturation and reverse satiation effect of light scattering were observed under the laser irradiation at the resonance [1, 2], but not under the off-res…
建筑结构在受到非常规作用时的连续性倒塌已经成为严重威胁公共安全的重要问题。为了探究结构抗连续性倒塌性能以及内力重分布的机制，本文采用《建筑抗连续性倒塌设计》(UFC)中推荐的构件去除法对一空间钢结构框架进行抗连续性倒塌数值模拟。使用显式通用有限元软件LS-DYNA进行动力非线性分析，并对数值模拟结果进行了讨论。分析结果表明：按照规范设计的钢框架结构在单根竖向构件失效的情况下具有良好的抗连续性倒塌性能；角柱应被认为是结构倒塌机制中的关键构件。 The progressive collapse of building structures subjected to abnormal loadings has been a seriou…
In this review, author indicates that hybridization of luminous dye molecules with ion-exchangeable layered inorganic compounds in the presence of surfactant molecules is one of very effective methods for preparing solid materials with highly luminescence ability. Moreover, author introduces that the present hybrid sy…
Considering environmental impact of construction materials, especially concrete, mineral admixtures like fly ash or blast furnace slag should be used as much as possible. Such concrete using mineral admixture generally has dense micro pore structure and high durability due to high resistance performance against the in…
In the present paper, in order to model rough honing operations, statistical regression correlation models are presented for surface roughness and material removal rate as a function of process variables. Several different models were studied: linear, quadratic, exponential, etc. In addition, Box-Cox transformations w…
ドイツのSumet社が開発した卓上型のラボ用の塗工機は生産工程を模した塗工方法により，生産設備で塗工した場合に比べ表面性，印刷結果，バリヤー層（多層塗工の場合）等に就いて相関が高い。また，塗工後に赤外線ヒーターと熱風を用いた乾燥を行い，3m／分以上の塗工速度の場合，3秒以内で塗工後に乾燥が行われ，即ち，塗工成分がサンプルに浸透する前に乾燥が行われる。塗工速度は0～35m／分の範囲で調整可能である。塗工方法は標準でサイズプレス，フィルムプレス，オプションでブレード，メタリングロッド塗工を行うことができる。フィルムプレスの場合，塗工前にアプリケーションロールから余剰な塗工液を取り除くロッドも装備されている。ロッドの押し圧と，塗工用ロー…
A mechanism for large range frequency tuning in in-plane spin torque oscillator is suggested and supported by the macrospin simulation. With magnetostrictive anisotropy controlled by the stress induced from PZT, center frequency of the oscillator shifts in 2-5 GHz range.
By incorporating suitable amount of H dopants and lowering the Al contents,the conflicts between low resistivity and high transmission in transparent conducting films have been successfully solved. The reduced resistivity of ZnO∶ Al films by hydrogen doping is attributed to the increased carrier density and carrier mo…
A phase-field system of coupled Allen--Cahn type PDEs describing grain growth is analyzed and simulated. In the periodic setting, we prove the existence and uniqueness of global weak solutions to the problem. Then we investigate the long-time behavior of the solutions within the theory of infinite-dimensional dissipat…
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We demonstrate a liquid metal-based reconfigurable terahertz metamaterial device that is not only pressure driven, but also exhibits pressure memory. The discrete response is obtained by injecting eutectic gallium indium into a microfluidic structure.
For a new insight on solid lubricant of fullerenes and onion-like carbons (OLCs), we have performed scratch simulations on isolated fullerenes/OLCs and monolayer film of their array. Here, molecular dynamics simulation may overestimate bond-forming between the scratch surface and target carbons, so that we consider on…