Materials Literature
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Рентгеноструктурное исследование кристаллических продуктов взаимодействия тетраиодомеркурата(II) калия, -капролактама и нитрата лантана(III) в соотношении 3 : 16 : 2 в водном растворе показало наличие трех видов кристаллов новых соединений состава [LaCpl8]2[HgI4]3 (I), [LaCpl8][HgI4]I3 (II) и [LaCpl7(H2O)]2[HgI4]2[Hg2…
Most research in the field of organic electronics has focused on π-conjugated molecules with a closed-shell configuration, which accommodate their π-electrons in only bonding orbitals and are consequently quite stable. In general, closed-shell molecules have wide energy gaps, and they have significantly weaker intermo…
近年，省資源化とコスト削減の要求はますます重要となっている。本報告では，板紙のコスト低減の取り組みについて，主にウェットエンド薬品の観点から，特に，（1）汚れ・断紙の防止，（2）サイズ剤の定着，（3）硫酸バンド（Alum）の低減対策，（4）紙力剤・濾水・歩留剤の効率的使用について報告する。汚れや断紙の原因の主なものに古紙等由来のピッチがある。カチオン性有機凝結剤のFR―801，FR―701H，MT―910等は，カチオン密度だけでなく，分子量や構造に特徴を持たせることでより優れたピッチコントロール効果を発揮し，汚れ，断紙の防止に効果がある。また，これらの凝結剤はサイズ剤の定着にも優れた効果を持ち，サイズ剤の添加量削減が見込まれる。さ…
In this paper, we show theoretically that the reflectance spectra of one dimensional multilayer metalorganic periodic structure (1D MOPS) can be enhanced due to the addition of the organic constituents. We have used simple transfer matrix method to calculate the absorption, transmittance and reflectance of the 1D MOPS…
A. Einstein first applied Riemannian geometry to develop the general theory of relativity almost one hundred years ago and succeeded in understanding astronomical-scale phenomena such as the straining of time-space by a gravitational field. It is of great interest to reveal whether or not Riemannian geometry affects t…
By mixing with polymer and inorganic substances in a molecular level, organic-inorganic hybrids which have both functions derived from each component can be obtained. We can also tune the properties of the materials by changing the contents or types of organic components. In this review, we survey the series of studie…
The reduction of Europium (Eu + ) in aqueous solution and doping Eu + obtained into the host lattice Ca(SCN) 2 2H 2 O solution using a Modified Jones reductor is described here . The major goal is to dope Eu 2+ into compounds that are difficult to dope through the melt method. Ca(SCN) 2 2H 2 O was obtained by the reac…
Self-assembled nanostructures of CulnGaSe2 (CIGS) comprising of nanosheets with sheet thickness of 20 nm have been developed via one-step electrochemically alloying technique. These self-assembled nanoplates exhibit highly intersecting behavior and transform from CuSe to CIGS as the reduction potential was varied. The…
Achieving a high efficiency in rotating machines is especially important in terms of saving energy. It is well known that the efficiency of a rotating machine such as the induction motor is not 100%. The manufacturing process of a rotating machine increases iron loss. This problem is called the building factor problem…
This paper presents iron loss distribution measurement technology and local vector magnetic distribution measurement technique applied to a permanent magnet motor. In the iron loss measurements, we used a V-H sensor in order to obtain local vector magnetic property distributions. In this paper we describe the measurem…
采用高温固相反应法制备了不同浓度Si-N共掺的CaAl2O4：Eu^2＋蓝色荧光粉,发现只需2%（摩尔分数）的Si-N共掺就可以明显提高荧光粉的荧光性能。研究还发现在CaAl2O4：Eu^2＋,Sm^3＋中掺入Si-N后,荧光粉的荧光强度和余辉性能都有提高。通过荧光粉的光谱图,发现共掺没有改变荧光粉中发光中心Eu离子的价态,而电子顺磁共振（EPR）谱则表明,Si-N共掺对Eu离子周围的配位环境产生了较大的影响。这说明掺杂的Si-N倾向于取代Eu2＋附近的Al-O,并且由于Si-N键相对于Al-O键具有较短的键长,使发光中心周围晶体骨架的刚性得到了增强,从而减少了晶格热震动导致的非辐射跃迁能量损失,提高荧光粉的发光性能。同时,热释光…
The demands for manufacturing thin silicon wafers have increased following the advancements in technology. To increase product efficiency and accuracy of semiconductors, a new method for holding the silicon wafer is required. An electro-adhesive gel (EAG) is a new material developed as a functional material applied to…
exo−及びendo−ノルボルネンジカルボン酸無水物と両末端ヒドロシリル型オリゴジメチルシロキサンとの，ヒドロシリル化反応によって合成される脂環式テトラカルボン酸二無水物を対象にして，赤外吸収スペクトルのケイ素─酸素（Si−O）伸縮振動を解析した．ジシロキサンではSi−O非対称伸縮振動に基づく吸収が1種類，トリシロキサン以上では2種類観測された．高波数側の吸収はシロキサン鎖の長さによらず一定の波数を示したが，低波数側は鎖長が長くなるに従ってより低波数側にシフトするとともに吸収の強さが増大した．トリシロキサン以上では，内部ケイ素原子から見た二つの酸素原子の動きに対称運動と非対称運動の2種類が存在し，この2種類の運動の組み合わせによっ…
最近の新設のライナー及び中芯グレードにおける軽量化及び高速化のスピードは目を見張るものがあり，すでに坪量は75g／m2以下，最高運転抄速は1，650m／minに達しており，1，700m／minも視野に入ってきている。原料も古紙の割合が多く軽量になるにもかかわらず強度の向上が求められており，今日の経済状況下では，投資の迅速な回収が収益性を確保するためには不可欠である。メッツォ社の紙・板紙生産ラインは，エネルギーと原料の効率向上により操業コストを低減し，効率的な操作及びメンテナンスに配慮した設計により生産性を向上させている。これらの技術や設計的配慮は時代のニーズに沿ったもので高く評価されている。日本国内の設備投資は新マシンから既存設備…
Калориметрическим методом в среде растворителей с различной полярностью и электронодонорной способностью измерены энтальпии растворения мезо-трифенилкоррола, величины которых оказались более экзотермичны, чем у порфиринов близкого строения. Наиболее отрицательные значения solH° обнаружены в среде полярных электронодон…
Two types of diamond/DLC composite films, namely MCD/DLC and NCD/DLC, are fabricated on the WC-Co substrate by depositing a layer of DLC film on the surface of conventional MCD and NCD film. Characterisations on their surface morphology suggest that the diamond/DLC composite films exhibit a rather similar surface topo…
In this paper, a method concerning analysis of reinforced concrete structures in the serviceability limit state (SLS) is discussed. The method is based on elastic energy principles, combined with simple assumptions with respect to concrete mechanics. This approach allows for a direct implementation of the choices, mad…
The objective of this study has been to compare and quantify the simulated effects of noise, index errors, and photometric level errors on four different optical monitoring layer termination strategies. A computer program to simulate optical thin film monitoring has been written for this work. These four termination m…
采用水热合成方法制备出不同粒径大小的巯基乙胺（CA）修饰的CdTe（CA-CdTe）量子点,并研究CA-CdTe量子点对Co~（2＋）的荧光响应情况。研究表明Co~（2＋）对CA-CdTe量子点的荧光具有猝灭作用,并且随着Co~（2＋）浓度的增加,CA-CdTe量子点的荧光强度逐渐降低。当Co~（2＋）浓度在0.3×10~（-5）~33×10~（-5）mol·L~（-1）范围内时,获得了Co~（2＋）与粒径大小为3.60 nm的CA-CdTe量子点相互作用的Stern-Volmer荧光猝灭方程,线性相关系数R~2为0.998,检出限为6.547×10~（-7）mol·L~（-1）。利用CA-CdTe量子点荧光分析方法对Co~（2＋…
This paper summarizes our research activities to produce nanoscopic fibrillated product from lignocellulosic biomass using mechano-chemical treatment. Hydrothermal and ozone pretreatment were effective to loosen the cell wall structure, resulting in the improvement of mechanical fibrillation. Characterization of thus-…