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 this work, the development of a two-dimensional Direct Simulation Monte Carlo (DSMC) Program for pressure boundaries using unstructured cells and its applications to typical micro-scale gas flows are described. For the molecular collision kinetics, variable hard sphere molecular model and no time counter collision…
Post-translational phosphorylation of the microtubule-associated protein tau is believed to have close relevance to the pathogenesis of Alzheimer's disease. The growth of amyloid fibrils of the short peptide segment VQIVY310K (PHF6) corresponding to the core part of tau fibril formation is strongly affected by the pho…
In this study, we proposed an electro-rheological fluid-aided polisher (ERAP) using one-sided, patterned electrodes. The characteristics of ER fluid and ER fluid containing abrasive grit were investigated. The polishing performances of ER fluids with and without abrasive grit employing ERAP were verified and the follo…
To electrically activate the shape recovery in a styrene-based shape-memory polymer (SMP) by coating with conductive carbon nanofiber paper has been demonstrated in this paper. Carbon nanofibers in the form of paper sheet in combination with SMP significantly improve the electrical and thermal conductivity of polymer,…
An IF steel billet was deformed via equal channel angular pressing (ECAP) using a single pass at room temperature. Grain refinement was observed in the microstructure after severe plastic deformation. Regular deformation bands arise in several grains as a result of grain fragmentation during the pressing. The hardness…
Morphology and mechanical properties of polyamide 12 (PA12)/poly(vinylidene fluoride) (PVDF) blends The morphology, thermal and mechanical properties of polyamide 12 (PA12)/poly(vinylidene fluoride) (PVDF) blends were investigated. These polymers are engineering, semi-crystalline polymers which are reciprocally immisc…
The allylamine plasma treatment is used to modify the surface properties of vapor grown carbon fibers (VGCF). It is to improve the interfacial bonding between the VGCF and epoxy matrix. The allylamine plasma process was performed by batch process in a vacuum chamber, using gas injection followed by plasma discharge fo…
Parylene nanomechanical cantilevers with integrated piezoresistors were proposed for biochemical sensing based on surface-stress measurement. By using polymer as the cantilever material, the sensitivity is significantly increased. Simultaneously, parylene piezoresistive cantilevers exhibit different behaviors compared…
For preventing damages on the skin by UV-rays, various UV-cut materials have been developed. In the present study, the authors made a collagen sheet (hereafter "collagen artificial skin") to imitate the human skin on an experimental basis and, after having covered this sheet with a film added with various UV-protectin…
ポリアリルアミン塩酸塩のようなカチオン性ポリマーのサイズ排除クロマトグラフィー（SEC）測定においては，試料とカラム充填剤とのイオン性相互作用や疎水性相互作用を抑制することが重要である．本研究では，この目的のために開発されたカチオン性ポリマー分析専用の新規SECカラムについて，SEC/多角度光散乱（MALS）法を用いたポリアリルアミン塩酸塩の溶出挙動を評価した．溶離液中のNaNO3濃度が0.05，0.1，及び0.2 mol/Lの場合は，いずれも良好なサイズ排除機構により溶出していることを確認した．更に，溶離液中の塩濃度の増加に伴って，ポリアリルアミン塩酸塩の回転半径が減少し，溶出容量が増加することが明らかとなった．これは，溶離液中…
症例は66歳，女性で，僧帽弁狭窄症に対するPTMC施行12年後に労作時呼吸困難が出現した．精査の結果，僧帽弁狭窄兼逆流症および三尖弁逆流症のため手術適応と考えられたが，問診にて金属アレルギーが疑われ，パッチテストを施行した．亜鉛，マンガン，ニッケル，コバルト，重クロムにて陽性を示した．さらに，手術にて使用予定のハートワイヤー，胸骨ステンレスワイヤー，多くの機械弁，生体弁での金属部分のパッチテストでも陽性を示した．国内使用可能な人工弁のうち，SJM人工弁の一つがカーボン，タングステンのみで構成されており，人工弁のサンプルパッチテスト陰性のため使用可能と判断した．手術では，胸骨正中切開を避け右前第4肋間開胸下でアプローチし，左大腿動脈…
Friction welding was carried out on austenitic and ferritic stainless steels (diameter: 3 mm). The practical process windows, that is, weld lobes, were shown for similar and dissimilar welding. Proper balance of heat and deformation was necessary to form a favorable weld interface that had no unbonded regions and oxid…
Direct O-alkylation of tetrathiacalix[4]arene with 2-bromoacetamide afforded two conformational isomers ( cone and 1,3- alternate) of tetrakis(carbamoylmethoxy)thiacalix[4]arene and 1,3-disubstituted bis(carbamoylmethoxy)thiacalix [4]arene, depending on the base used.
The effect of electrochemical anodic oxidation on the formation of porous anodic oxide films (PAOF) on a high-grade aluminum (99.99%) in a sulfuric acid solution is studied. Anodizing modes are chosen such as to obtain PAOF with ordered nanostructure. It is shown that under an atomic force microscope, the anodic film…
Second- and third-order standing-wave slow-plasmon resonances on gold u-shaped nanowires are modelled and used to achieve a negative index metamaterial at far infrared frequencies which can be stacked showing backward phase propagation.
In this work, BaFe0.5Nb0.5O3 (BFN) was added to BaTiO3 (BT) to form the solid solution. The investigation of phase evolution, physical properties and electrical properties of the binary system (1−x)BT‐xBFN where x = 0, 0.2, 0.4 and 0.6 was carried out. The BT and BFN powders were prepared separately using a calcinatio…
Effects of aging and solution annealing treatment on the super elastic respond of the cold-worked Ni50.9%-Ti thin wire was studied in nano-scale utilizing instrumented nanoindentation. The nanoindentation results were coupled with the tensile test results to provide better insight to the governing deformation mechanis…
This paper reports work in the extrusion fractionation of wheat straw and biocomposites utilising the entire constituents of straw. The effects of pre-treatment and extrusion conditions on fractionation of straw and mechanical properties of the biocomposites were studied systematically. It is demonstrated that twin sc…
The oxides of nitrogen (NOx) and particulate matter (PM) form the main challenge for diesel engine exhaust cleaning. Despite the emissions reduction, the fuel economy should be kept at a sufficient level to also prevent CO2 increase. In the present project, a turbocharged, inter-cooled, common-rail, direct-injection,…
As a component of near-field scanning optical microscope (NSOM), optical fiber probe is an important factor influncing the equipment resolution.Electroless nickel plating is introduced to metallize the optical fiber probe.The optical fibers are etched by 40% HF with Turner etching method.Through pretreatment, the opti…