Materials Literature
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The possibility of utilizing steel slag produced in Croatian plant as an aggregate in concrete was investigated in this paper. Therefore, concrete mixtures with coarse slag fractions were prepared and their properties in hardened state (compressive and flexural strength, corrosion susceptibility) were compared with pr…
Objective To investigate available surgical strategies for the management of vitiligo on special body sites, so as to improve treatment outcome of vitiligo.Methods In total, 140 patients with vitiligo on special body sites collected from 1998 to 2008 were included in this study.Different surgical strategies and postop…
Abstract Not Provided
Das Hauptthema dieser Arbeit ist der Einbau von Wasserstoff (H) in drei wichtige nominell wasserefreie Minerale (NAMs) des oberen Erdmantels: Coesite (Cs), Olivine (Ol) und Wadsleyite (Wad). NAMs können H in die Struktur über Punktdefekte, wie z.B. Kationenleerstellen einbauen. Hauptziel dieser Arbeit ist eine vertrau…
采用水热-烧结法制备了性能良好的Eu 3+ /Tm 3+ 共掺LaF 3 和LaOF 纳米晶体. 在波长为532 nm的激光激发下, 实现了共掺样品中Tm 3+ 对Eu 3+ 的荧光增强效应. 结果发现, 当三价稀土离子Tm 3+ 作为敏化剂被共掺到LaF 3 :Eu 3+ 和LaOF:Eu 3+ 纳米晶体中时, 掺杂 Eu 3+ 的荧光发射得到了显著的增强, 其增强倍数与Tm 3+ 离子的浓度密切相关. 与单掺 Eu 3+ 离子的LaOF:Eu 3+ 纳米晶体相比较, Tm 3+ 离子的掺入可使氟化物纳米晶体中原本已经很强的 5 D 0 → 7 F 2 (612 nm)红色荧光辐射又增强了一个数量级, 从而获得拥有良好颜色纯度和…
爆轰驱动过程中产生的高温高压气流对铝质膜片、激波管壁产生烧蚀和冲刷作用,以致激波管壁、端盖上附有氧化铝等杂质,而高温下AlO自由基在气体分子的高速碰撞下被激发并产生强烈的辐射,从而干扰了高温气体辐射光谱的分析。用爆轰驱动加热技术将空气加热到4 000~7 000 K,利用多通道光学分析仪对AlO自由基辐射光谱进行分析,实验发现在460~530 nm波长范围内有多支辐射非常强烈的AlO自由基B2Σ+-X2Σ+(T00=20 689 cm-1)带系辐射谱带,且每支谱带都由多个带头组成,带头间隔约为2 nm,带头处于高频位置并向低频方向伸延。通过实验与理论计算相结合,重点分析了AlO自由基B2Σ+-X2Σ+带系辐射光谱的结构特征。AlO…
To develop a new packaging material for fresh-keeping of salted egg products,polyvinyl alcohol(PVA) was chemically cross-linked with stearic acid.Effects of major cross-linking reaction conditions on film-forming properties of the resulting coating material were examined.Results showed that the film formed from the PV…
With weight loss method, metallurgical observation, SPM and EIS, the corrosion behavior of 1Cr18Ni9Ti steel in washing condition with different concentrations KMnO{sub 4} +10% HNO{sub 3} solution was studied. The results showed that 1Cr18Ni9Ti steel in the system occurred intergranular corrosion, and the surface rough…
Isothermal adsorption and adsorption dynamics methods were employed to study the characteristics of Cd(superscript 2+) adsorption on 2 paddy soils. The obtained results showed that, the sorption of Cd(superscript 2+) on paddy soils in accordance with Freundlich adsorption isotherm function. Sorption capacity of HN inc…
The thesis reviews two pyrolysis techniques – ultrasonic spray pyrolysis \n(USP) and laser pyrolysis (LP). The two techniques - USP at the Physics LP at \nthe National Laser Centre, CSIR in Pretoria, South Africa – were designed and \nassembled by the candidate for the purpose of producing two related \nmaterials - VO…
An aqueous route through MnO{sub 4}{sup -}/Mn{sup 2+} reaction under mild conditions was used to synthesize alpha-MnO{sub 2} nanorods. The morphological and structural evolution of alpha-MnO{sub 2} nanorods during their growth were tracked by Powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmis…
In the title polymeric compound, {[Cd(C(15)H(11)N(2)O(2))(2)]·0.1H(2)O}(n), the Cd(II) atom is coordinated by four carboxyl-ate O atoms and two benzimidazole N atoms from four benzimidazolylmethyl-benzoate anions in a distorted octa-hedral geometry. Each anion bridges two Cd atoms through the terminal carboxyl-ate gro…
Protein folding is one of the most fundamental problems in biophysics. Molecular dynamics (MD) simulations aim to provide the most detailed description of the behavior of atomic models of proteins during their folding processes. However, current MDsimulations, even with the most powerful computational techniques, can…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” opt…
Abstract a‐SiOx:H (x < 2) thin film samples prepared in a PECVD system by using SiH4+CO2 gas mixture show strong room temperature visible photoluminescence (PL) at a photon energy of 2.1 eV. The PL spectrum of a single layer sample was observed to reshape due to the multiple reflection between two interfaces of the fi…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” opt…
Abstract The reasons for the foundation of ECASIA lay far back in the late 50s and 60s of the last century, when material analysis was identical with bulk analysis. With the appearance of surface analytical techniques such as SIMS and AES, the importance of surface analysis became evident. Unfortunately, analysis at t…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” opt…
In many biological tissues as well as in some technical materials we find nano-sized rod-shaped particles embedded in a relatively soft matrix. Loss of stability of equilibrium, i.e. buckling, is one of the possible failure modes of such materials. In the present paper different kinds of load transfer between matrix a…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” opt…