Materials Literature
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The effects of overload on the threshold stress intensity factor (KISCC) for stress corrosion cracks (SCC) in type 304 austenitic stainless steel (SUS304) were studied. Tensile overload was applied to a wedge opening loaded specimen of SUS304, and SCC tests were carried out to determine the resultant KISCC. The values…
The silicon nanoparticle have been grown by radio-frequency plasmas-enhanced chemical vapor deposition technique and the photoluminescence(PL)of the silicon suspension have been studied by both steady-state and time-resolved photoluminescence spectra.The steady-state PL spectra of the silicon suspension show that a bl…
Three kinds of metal hydride, Zr hydrides, Gd hydrides, and the hydrides of Zr-Gd alloys (Zr:Gd=10:1, 8:1, 6:1), were prepared and their mechanical and thermal properties were examined. It was confirmed that the hydrides of Zr-Gd alloys were composed of mixtures of Zr hydrides and Gd hydrides. We succeeded in formulat…
将马来酸酐接枝高密度聚乙烯（HDPE-g—MAH）与聚苯硫醚（PPS）共混制成共混体系，体系采用环氧树脂E44增容，考察共混物体系的热行为、力学性能、相形态、增韧机理。结果表明：PPS与HDPE—g—MAH的相容性有所改善，尤其是环氧树脂E44的加入，使在增强增韧方面效果更加明显，体系的冲击韧性随着环氧树脂E44含量的增加表现为先增强后降低。当环氧树脂E44质量分数为6．5％时，共混体系的拉伸强度提高到52MPa，冲击强度也达到7．5kJ／m^2。PPS／HDPE—g—MAH／E-44共混体系中，环氧树脂E44作为增容剂和增韧剂提高PPS基体与HDPE—g-MAH的界面粘结能力，使其共混物达到增强增韧的效果。
Previously, folic acid receptor-targeted Dextran-Taxol-Folic acid (Dex-TXL-FA) has shown the in vitro superior and selective antitumor activity against human oral cancer cell line (KB) compared with the absent of folic acid, DextranTaxol. Present study is given for further investigation of in vivo antitumor efficacy o…
In situ visualization of water in an operating polymer electrolyte fuel cell (PEFC) by magnetic resonance imaging (MRI) and soft X-ray radiography (SXRG) is presented. Concept and methodologies of these techniques in order to apply water visualization in PEFCs are described. MRI measurement of a hydrated polymer elect…
Magnetoelectric coupling at metal surfaces opens up a new possibility for metallic non-volatile magnetic data-storage devices, in which the magnetic bits are controlled by an electric field. We studied the atomic and magnetic order in bilayer Fe nano-islands grown on a Cu(111) substrate with a scanning tunneling micro…
Residual stress due to welding can result in brittle fracture, fatigue failure, and stress corrosion cracking in welded structures. Measuring residual stresses are of great importance, if crack propagation needs to be evaluated. However, it is especially known that the X-ray diffraction method makes remarkable differe…
アルミニウム合金上にフレーム溶射法で形成したAl-Zn合金溶射皮膜の海水中での腐食挙動について，すき間噴流法試験装置を用いて検討を行った．液静止下では試験片面に薄茶色の生成物が観察されたが，腐食はほとんど生じなかった．それに対して液流動下では氷点近傍の0℃以下の場合でも試験片面にAl (水) 酸化物と考えられる白色の生成物が生じた．これは氷点付近で皮膜に欠陥が生じ，液流動によりその部分への酸素供給が増加し腐食が進行したためである．
A visible/infrared broadband dichroic beamsplitter which can meet the light energy boundary of polarization remote sensing optical system was designed with the induced-transmission method.The design was based on polarization characteristics of the visible/infrared broadband dichroic beamsplitter,and actual characteris…
Tail anchored proteins, defined by a single transmembrane domain at C-terminus, are post-translationally inserted into the membrane by Get3 ATPase. Here we report the crystal structure of Get3 in ADP-bound and nucleotide free forms. Get3 forms an open dimer conformation, in which two subunits are linked by a Zn2+ ion.…
以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)、丙烯酸(AA)、甲基丙烯酸十二氟庚酯(G-04)以及丙烯酸-?-羟丙酯为原料，采用溶液自由基聚合工艺，合成不同氟含量和不同羟基含量的氟化丙烯酸树脂，与六亚甲基二异氰酸酯三聚体(N3390，HDI三聚体)交联制备氟化丙烯酸聚氨酯。对聚氨酯薄膜的透光性、疏水性和介电性能进行检测，并与市售的FEVE型氟化树脂(ZY-1)以及丙烯酸型氟化树脂(SGK-5701)的交联产物进行性能对比研究。结果表明，氟化丙烯酸型聚氨酯相较市售氟化树脂交联聚氨酯具有更低的疏水角、疏水稳定性和更低的介电常数和介电损耗值：可见光区透光率 > 90%；调整共聚物中氟单体含量，可使聚氨酯膜的疏水角 90%) than…
La prsence des ions chlorure, notamment en sites maritimes, est l'une des causes majeures provoquant la dgradation des structures en bton arm par la corrosion de leurs armatures. Par consquent, la prdiction de la pntration des chlorures dans le bton est une composante majeure pour planifier et quantifier correctement…
In this experimental study, a four stroke diesel engine was conducted to investigate the effect of adding water-based ferrofluid to diesel fuel on engine performance. To our knowledge, Magnetic nanoparticles had not been used before. To this end, emulsified diesel fuels of 0, 0.4, and 0.8 water-based ferrofluid/Diesel…
Metal oxides/hydroxides are naturally occurring discrete minerals or in the form of coatings on other particles and exist in various amorphous and crystalline forms. In aqueous suspensions, they develop surface electrical charges from the dissociation of the surface hydroxyl groups and complexation of the background e…
Krijgslaan 281 (S3 (1) & S4bis (2) )
高吸水性ポリマーと腐食抑制剤を混合したコーティングを鋼板に行い，腐食抑制挙動について検討を行った．試験片に欠陥を付与した後に，35℃の0.5 wt％ NaCl水溶液中で電気化学インピーダンス測定によりスクラッチ試験片の分極抵抗の測定を行った．高吸水性ポリマー，硝酸カルシウム，ビニルエステル樹脂を混合したコーティングは2段階で分極抵抗が上昇し，自己修復性を示した．試験片の欠陥部において粒子状の皮膜が確認された．分極測定の結果，浸漬初期に高吸水性ポリマーの作用でカソード反応が抑制され，その後硝酸カルシウムの作用でアノード反応が抑制することが確認された．
On the basis of a traditional phosphorescent organic light emitting device(PHOLED) with the structure of ITO/NPB/CBP∶Ir(ppy)3/BAlq/Alq3/LiF/Al,a new structure PHOLED was fabricated in this paper,where concavo-convex shape was constructed at the NPB/CBP∶Ir(ppy)3,CBP∶Ir(ppy)3/BAlq and BAlq/Alq3 interface.A series of mea…
We propose the Multi-Size-Mesh Hermite Scheme to perform the N-body simulations with short-range interactions and apply it to the sedimentary simulations of granular materials in fluid. The Multi-Size-Mesh Hermite Scheme is effective to the simulations with a wide range of scales both spatially and temporarily, becaus…
The crystal structure of η-Al(OH)3, which is a high pressure form of gibbsite (γ-Al(OH)3), was solved by single crystal X-ray diffraction and molecular dynamics simulations. The phase transition mechanism is considered to be the layer-shift type, which may frequently occur for layered hydrous minerals with non-close p…