Materials Literature
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Coating techniques utilizing the collision and adhesion of microparticles on a substrate have recently been attracting attention. However, the bonding between particles deposited on the substrate at room temperature and atmospheric pressure is weak because the kinetic energy of particles during their collision with a…
Alumina ceramics reinforced with multi-walled carbon nanotubes (MWCNTs) have been prepared by pressureless sintering. Resultant composites with the MWCNT contents up to 0.9 vol.% have shown relative density as high as 98%. In addition, with increasing the MWCNT contents up to 0.9 vol.%, bending strength and fracture t…
中層の木質ラーメン構造を実現する方法として，中間部材挿入型のラージフィンガージョイント（LFJ）に着目し，中間部材に構造用合板を積層した部材を用いた場合について検討した。中間部材の基材となるカラマツ（Larix kaempferi）構造用合板の材料試験，LFJによるカラマツ構造用集成材との継手性能試験を経て，断面150×300mmの集成材を用いたＬ字形接合部およびＴ字形接合部の強度試験を実施した。Ｌ字形，Ｔ字形試験のいずれにおいても，終局破壊はすべて中間部材側のLFJ部の曲げ破壊であった。中間部材の耐力について，鋼構造の接合部パネルの評価式を適用して検討した結果，合板表板繊維方向を柱軸方向に対して45°傾けて配置した場合では，部材…
Glasses in a wide range of compositions in the system xPbO - (100-x) Na2B4O7 (10 ⤠x ⥠50) have been prepared and characterized using XRD and modulated differential scanning calorometry(DSC). Quantitative correlations are established between fragility, glass transition temperature and structure. Addition of PbO caus…
An ultrafine grain (UFG) complex lamella aluminum alloy sheet was successfully fabricated by ARB process using AA1050 and AA6061. The lamella thickness of the alloy became thinner and elongated to the rolling direction with increasing the number of ARB cycles. By TEM observation, it is revealed that the aspect ratio o…
Linear motors can achieve much higher speed, quicker response, and more accurate positioning than ball screws. To achieve higher response in the linear motor positioning systems, force density and power rate in the linear motor characteristics must be improved. Therefore, it is important to know how to increase the ma…
Behavior of hydrogen that invades pure aluminum, 6061 and 7075 aluminum alloys from two environments, water and hydrogen gas, has been investigated by means of tritium autoradiography, TARG, a technique to visualize the hydrogen atoms in a specimen by using tritium, radioisotope of hydrogen, as a tracer. Sheet specime…
Flocculation method in Surface Enhanced Raman Scattering (SERS) is elucidated to utilize coupled localized surface plasmon between closely adjacent metal nanoparticles towards single molecule characterization. In particular focus is placed on the distinct adsorption of cationic and neutral R123 and R6G molecules on Au…
In this paper, we prepared magnetic boards made with bamboo powder or magnetic fluid impregnated bamboo powder and Mn-Zn ferrite powder and investigated their electromagnetic characteristics in GHz frequency, wave absorption characteristics, and bending strength. The results from our studies, the magnetic board made w…
Severe Transient Recovery Voltage (TRV) after the current interruption may appear when a fault occurs in the immediate vicinity of a power transformer without any appreciable capacitance between the transformer and the circuit breaker. These faults are called Transformer Limited Fault (TLF) that may cause higher Rate-…
Porphyrins comprise a chemical class widely used in drug design. Cationic porphyrins may bind to DNA guanine quadruplexes. We report the parameters of binding of 5,10,15,20-tetrakis(N-carboxymethyl-4-pyridinium)porphyrin (P1) and 5,10,15,20-tetrakis(N-etoxy-carbonylmethyl-4-pyridinium)porphyrin (P2) to antiparallel te…
The purpose of this study is to investigate what pre-service science teachers who are juniors think about benefits and risks of nuclear energy. In this research, as research model, qualitative research method was applied. In order to obtain qualitative data, semi-structured interview technique which is a kind of inter…
A facile chemical strategy was developed to anchor MnO2 nanoparticles on the surface of graphene sheet. Compared with literature, this approach requires neither extra pretreatment of acid functionalization of graphite nor any post-treatment for the conductivity compensation. Graphene sheet serves as both the nucleatio…
Ю. М. Арлинский, А
Surface is a matter having own chemistry, which provides unique material named “quasi-compounds”. Formation of active materials is essential on some catalysts. Formation of active hybrid layer composed of (-Rh-O-)/Pt on Pt-Rh(100) alloy, Pt/Rh(100), Rh/Pt(100), Rh/Pt(110), Pt/Rh(110) is a typical example, which is res…
We consider the fracture initiator of a pair of perfectly extended chains where the intermolecular interaction is assumed to be based on hydrogen-hydrogen interaction with a single chain. When two protons are closer together, the interaction energy is split into the grand state and excited state. The transition from t…
インクジェット紙を雑誌分野向けに大量生産するにおいて重要な課題のひとつは，従来のオフセット印刷用紙の見た目や風合いといった品種によって多種多様な特性を，如何に低コストで開発できるかである。ミネラル成分では，シリカや表面処理された無機顔料が一般的に使用され，適切な空隙構造が形成される。それらの空孔が十分な毛細管現象をもたらし，インクの液体成分を浸透させると同時に大きな空孔がインクを定着させる。これらのタイプの無機顔料は，従来の塗工顔料に比べて高価であり，塗工濃度が低く高速塗工には不向きである。また既存のインクジェット紙は，用紙の表面近くでインクを定着させるため，カチオン系の塗工カラーである。通常，抄紙工程はアニオン系であるため，この…
In case of the motion equation for molecules supposed as represented by a difference equation for the displacement of molecules, LC ladder circuit of a periodic system is obtained as an equivalent circuit.As the LC circuit shows reciprocal and lossless, we can apply the iteration parameter theory and we obtain complex…
This study intends to assess elastic and plastic deformation of carbon steel (SS400) and austenitic stainless steel (SUS304) by measuring magnetic flux leakage near a specimen surface using a hall sensor with high sensitivity and high spatial resolution. We measure the tangential components of Magnetic Flux Leakage ne…
Determination of affinities and binding sites involved in protein-ligand interactions is essential for understanding molecular mechanisms in biological systems. We combined singular value decomposition and global analysis of NMR chemical shift perturbations caused by protein-protein interactions to determine the numbe…