Materials Literature
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In the transport processes of plastic-films, wrinkling is sometimes generated due to misalignment of roller. To avoid the wrinkling, it is effective to reduce the web tension. However, under the low web tension, the traction inevitably falls as transport velocity increases due to air entrainment and is accompanied by…
Diffraction efficiency is critical for EUV multilayer gratings.To realize high diffraction efficiency,appropriate multilayer deposition method should be developed for grating substrates to ensure their groove shapes.The evolvement of groove shapes for laminar gratings during the deposition process was investigated.The…
【To improve the mechanical properties, such as durabilities and antioxidative characteristics, the covalently cross-linked (CL-) SPEEK (sulfonated polyether ether ketone)/Cs-substituted HPA (heteropoly acid) organic-inorganic composite membranes (CL-SPEEK/Cs-HPAs), have been intensively investigated. The composite mem…
为开发新型吸附剂,降低重金属对水体的污染,研究了壳聚糖对Cd2＋和Pb2＋的吸附条件,探讨了pH、温度、反应时间、壳聚糖添加量和金属离子初始浓度等因素对壳聚糖吸附性能的影响。结果表明,pH7～8和pH5～6条件下壳聚糖对Cd2＋和Pb2＋的吸附能力最强;低温有利于壳聚糖的吸附;在8 h时壳聚糖对Cd2＋的吸附容量达到最大,而对Pb2＋的吸附在实验时间内是随着吸附时间的延长而增大;随着壳聚糖添加量的增加,其对Cd2＋和Pb2＋的吸附能力也增强;初始金属离子浓度的变化对Cd2＋的影响不大,而在高的金属浓度下对Pb2＋的吸附率显著降低。壳聚糖对Cd2＋、Pb2＋的吸附动力学和热力学分别符合Lagergren方程二级吸附模型和Langmu…
The glycerol or free glycerine, which is the main byproduct in the biodiesel production process, must be isolated because it can cause several problems, being its content an indicator of the quality of Biodiesel. As well as in the European, American and Brazilian standards, the chromatographic methods are recommended.…
Copolymerizations of fluorine containing poly(THF) macromonomers with styrene and with methyl methacrylate were investigated in a variety of fluorine-containing poly(THF) chain lengths in the macromonomers. It is observed that the chain length of fluorine-containing poly(THF) has an effect on the reactivities of the m…
Anomalous refractive effects of photonic crystals (PhCs) formed by holographic lithography can be modulated more easily than regular PhCs. The unique features extend the possibly guiding ability of holographic PCW and promising potential in optical application.
Z-pinch discharge plasmas can be inductively driven without the use of electrodes, producing photons in the range from ~ 1 to 120 nm. Our z-pinch light source has been utilized in soft x-ray (SXR) microscopy and extreme ultraviolet (EUV) lithography applications.
A numerical simulation method of electropaintings using boundary element method (BEM) is proposed. The proposing method treats the electrolytic bath filled with paint solution as a Laplace field, and the boundary conditions on anode and cathode surface are given in the form of robin boundary conditions with polarizati…
The object of this paper is to discuss some interesting properties of the integral operator
We show that a compact structure consisting of multiple optical microcavities on both the entrance and exit side of a subwavelength plasmonic slit can greatly enhance the absorption cross section of the slit.
加圧水型原子力発電所では，1次冷却材中の放射性ガスを連続的に抜き出した後，タンク内に長期貯留することなどにより放射性ガスを減衰低減した上で環境へ放出している．放出放射能量のより一層の低減とシステムの簡略化，これに伴うシステムの信頼性，運転保守性の向上が期待できる新たなチャコールベッド方式の放射性ガス処理システムを導入するために一連の基礎データを得た．これらを踏まえて設計，製作されたチャコールベッド方式の放射性ガス除去装置は，逐次新設プラントに導入され安定した運用が行われている．ここでは，一連の試験結果を紹介するとともに，プラント運用時の操作条件が変動した場合のシステムの動特性を解析評価するため，基礎式を導出しこれに基づきチャコール…
Since polyvinyl alcohol(PVA) as a sizing agent is not environmental friendly,it’s imperative to use less or even without PVA in the warp sizing.A set of sizing formulas with the same solid containing rate and different proportion were designed.After sizing practice of pure polyester and polyester/cotton yarns with atm…
Nonlinear optical(NLO) properties of the colloidal solutions of chemically synthesized undoped and Mn2+ doped ZnS Quantum Dots(QDs) in methanol are measured by using a Q-switched 10 ns pulsed Nd∶YAG laser radiation by the Z-scan technique.The nanostructures of the synthesized materials are characterized by using diffe…
光電極を用いた水分解による水素製造法は二酸化炭素をほとんど副生せずに太陽光エネルギーを水素に変換するための方法であり、その活用が期待されている。しかし、光電極に用いる光触媒に関する研究は盛んに行われている一方、反応器に関する研究はほとんどなされていない。そこで本研究では、光電極による水素製造装置を設計することを目的とした。反応器において高効率な反応を達成するためには、反応器の構造パラメータを反応に対して適切に決定する必要がある。このような反応器の最適設計問題に対して、流体シミュレーションが有効な手段の一つとなる。しかし、流体の流れが反応に有利な状態を形成するように反応器の構造を決定するためには、多くのシミュレーション回数が要求され…
Piezoelectric actuators for dynamic applications must be pre-stressed to avoid tensile stress and to improve their reliability. The actuating behavior of piezoelectric actuators depends strongly on the load characteristics: If the load increases with extension of the piezoelectric ceramic, e.g. when using a classical…
Nano-porous hydroxyapatite (HAp)-DNA composite film modified glassy carbon electrode was prepared by sol-gel one-step method for the first time. DNA was immobilized on the nano-porous HAp film firmly due to its effective adsorbability and biocompatibility and the structure of macromolecule of DNA plays an important ro…
The effect of single-wall carbon nanotubes (SWNTs) on nonlinear optical absorption of D-shaped fibers with versatile the remaining length of the cladding region and the interaction length are investigated. The optical absorption based on SWNTs is induced by the energy bandgap in SWNTs. The bandgap energy depends on th…
The N-doped β-Ga2O3 films were grown on Si and quartz substrates by RF magnetron sputtering in different ammonia partial pressure ratios(from 0% to 30%).The influence of ammonia partial pressure ratio and annealing treatment on the optical and structural properties were studied.The microstructure,optical transmittance…
The basket of transport and storage cask must have not only a structural strength during transport and storage conditions, but also heat removal function. The basket material is also preferable to be light in order to reduce the weight of cask because it is very important to increase the number of fuel assemblies load…