Materials Literature
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The Walden-Wintle model for charge injection and transport through highly disordered insulating materials has been extended to include charge injection with a charged particle beam. The original model is applicable to charge injection in a dielectric material from a pair of electrodes in a parallel-plate geometry. It…
Tapping (AC) mode Atomic Force Microscopy (AFM) is commonly used to determine the thickness of graphene samples. However, AFM measurements have been shown to be sensitive to environmental conditions such as adsorbed water, in turn dependent on relative humidity (RH). In the present study, AC-AFM is used to measure the…
This inspection report sets out the findings of a monitoring inspection, the purpose of \nwhich was to inform a registration renewal decision. This monitoring inspection was \nannounced and took place over 2 day(s). \nThe inspection took place over the following dates and times \nFrom: To: \n01 December 2014 09:00 01…
研究了聚丙烯（PP）在附近有其他聚合物存在下，其光氧老化受“传染”的现象．研究发现，PP的光氧化会受到邻近聚合物降解产物的影响而被加速，即发生光氧化降解的“传染”．当“传染源”不同时，被“传染”的情况也有所不同．在PP、聚甲基丙烯酸甲酯（PMMA）、尼龙6（PA6）和苯乙烯-丙烯酸酯共聚物（PSB）中，PSB的降解产物影响最大，使得PP光氧化的降解速率成倍增长．老化后的PP或PMMA作为“传染源”时，对PP的光氧化降解速率有进一步的促进．这种“传染”行为与聚合物降解产物的种类和含量有很大的关系．
During the course of th is wort-I have become indebted to most of my colleagues, past and p resen t, in the Nuclear Physics Research Unit, to many members of the Physics Department proper, and to sundry o th er individuals and o rganisations for advice and assistance of one kind or another.Some s p e c ific examples a…
We present SPR, a new program repair system that uses condition synthesis to instantiate transformation schemas to repair program defects. SPR's staged repair strategy combines a rich space of potential repairs with a targeted search algorithm that makes this space viably searchable in practice. This strategy enables…
氧化电解水作为一种新型、高效、环保的杀菌剂，具有广阔的应用前景。但目前在氧化电解水制备过程中，其阳极电催化材料存在效率低和使用寿命短等问题。采用亚当斯融合法制备了 Ir0.5Pt0.5O2复合氧化物电极。通过XRD 表征，其晶型为典型的金红石型结构。SEM 结果表明虽然颗粒之间存在团聚现象，但是可以明显观察到大量蜂窝状结构存在，提高了催化剂的比表面积和电化学面积。进一步的CV表征证明了这一点，同时在CV图中表现出明显的铂铱复合氧化物结构的特征。利用LSV技术分别考察了Ir0.5Pt0.5O2的析氯和析氧极化曲线，发现其单位表观面积上析氯活性明显提高，而析氧活性明显降低。计算表明 Ir0.5Pt0.5O2的析氯反应 Tafel 斜率…
采用溶胶-凝胶法制备了HZSM-5分子筛负载SO42-/TiO2固体超强酸催化剂,利用直接酯化法催化合成三羟甲基丙烷油酸酯。通过IR、XRD、BET、SEM对催化剂进行了表征,结果表明TiO2以纳米颗粒的形式附着于HZSM-5分子筛表面,且负载后催化剂的比表面积高达309.2m2/g,比HZSM-5分子筛提高了45.6m2/g,
We report on lateral spin Seebeck transport of electron spin packets which are optically generated by ps laser pulses in the nonmagnetic semiconductor n-GaAs. Spin Seebeck transport is driven by a local temperature gradient induced by an additional cw heating laser and is probed by the spatio-temporal evolution of the…
Silicon carbide friction bodies fulfill high operation criteria owing to the properties provided by this ceramic. Its low thermal expansion coefficient and good thermal conductivity make it less sensitive to thermal shocks than other ceramics and particularly in friction, where the local heat generation may be signifi…
You have accessWerkstofftechnik-PraktikumMar 2015Werkstofftechnik-PraktikumFrank HahnFrank Hahnhttps://doi.org/10.3139/9783446444942.fmSectionsAboutPDF ToolsAdd to FavoritesDownload CitationTrack CitationsCopy LTI LinkPDF key 'share (en)' returned an object instead of string.FacebookTwitterEmailLinkedIn next chapter F…
Microscopes can be used to view objects or structural details that are not visible with the naked eye. A type of microscope called an electron microscope—which uses beams of particles called electrons—is particularly useful for examining tiny objects or structures because it can produce images with a higher level of d…
Temperature dependence of exciton-surface plasmon polariton coupling in Ag
The use of NMR spectroscopy, linked on-line with a separation technique (such as high performance liquid chromatography (HPLC or LC)), has resulted in many applications in pharmaceutical research. The use of LC-NMR can greatly simplify the structural characterization of unknowns with a particular advantage of this app…
Large biological molecules (or macromolecules) have intricate three-dimensional structures. X-ray crystallography is a technique that is commonly used to determine these structures and involves directing a beam of X-rays at a crystal that was grown from the macromolecule of interest. The macromolecules in the crystal…
Potentiometrisch betriebene Festelektrolytsensoren auf der Basis von Yttriumoxid-stabilisiertem Zirconium(IV)-oxid als festem Oxidionenleiter weisen einen für elektrochemische Sensoren ungewöhnlich breiten Messbereich von über 30 Zehnerpotenzen sowie eine vergleichsweise hohe chemische, thermische und mechanische Stab…
We derive a new upper bound on the algebraic connectivity of a regular graph using the Higman-Sims technique. Together with a new result on the connectivity of the neighbourhood graph of strongly regular graphs, our result gives a characterization of a class of strongly regular graphs that maximize the algebraic conne…
This comment clarifies a substantial issue raised in the subject paper. An empirical model for the pressure dependence of the viscosity of squalane was presented and some published data for high pressure were rejected on the basis of inconsistency with this viscosity model which is known to be very limited in range of…
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionORIGINAL ARTICLEThis notice is a correctionCorrection to Critical Review of Low-Density Polyethylene's Partitioning and Diffusion Coefficients for Trace Organic Contaminants and Implications for Its Use As a Passive SamplerRainer Lohmann*Cite this: Environ. Sci. Tech…
"The book provides an overview of the author's work devoted to experimental study of hopping conductivity, which includes substantial contributions, such as solving the problem of critical indices of the metal-insulator transition in doped semiconductors, investigation of transitions from different kinds of hopping co…