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Polarization Measurements in Radiative Electron Capture into High-Z Ions

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IMP & HIRFL Annual Report 2002年 77-77页

作者： S.Tachenov,Th.Sthlker,D.Banas,H.F.Beyer,F.Bosch,A.Gumberidze,S.Hagmann,C.Kozhuharov,Th.Krings,A.Orsic Muthig,D.Protic,D.Sierpowski,u.spillmann,Z.Stachura,A.Warczak GSI-Darmstadt Germany.IKF university of Frankfurt Germany. GSI-Darmstadt Germany.IKF university of Frankfurt Germany. GSI-Darmstadt Germany.Institute of Physics Swietokrzyska Academy Kielce Poland. GSI-Darmstadt Germany. GSI-Darmstadt Germany. GSI-Darmstadt Germany.IKF university of Frankfurt Germany.Tbilisi State university Georgia. GSI-Darmstadt Germany. Kansas State university uSA. GSI-Darmstadt Germany. FZ-J ulich Germany. GSI-Darmstadt Germany.IKF university of Frankfurt Germany. FZ-J ulich Germany. Institute of Physics Cracow university Poland. GSI-Darmstadt Germany.IKF university of Frankfurt Germany. INP Cracow Poland. Institute of Physics Cracow university Poland.

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Exclusive Population of n=2 S-states in He-like uranium by Ionization Process

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2002年第1期 76-76页

作者： Ma Xinwen D.Banas Th.Sthlker H.F.Beyer F.Bosch A.Br(?)uning-Demian A.Gumberidze S.Hagmann C.Kozhuharov P.H.Mokler R.Mann A.Orsic Muthig D.Sierpowski u.spillmann S.Tachenov Z.Stachura A.Warczak Gesellschaft fiir Schwerionenforschung Darmstadt Germany.Gesellschaft fur SchwerionenforschunK Darmstadt Germany. Institute of Physics Swietokrzyslta Academy Kielce Poland.Gesellschaft fur Schwerlonenforschung Darmstadt Germany. Institute fur Kerrtphysik University of Frankfurt Germany.Gesellschaft fur Schwerionenforschung Darmstadt Germany.Gesellschaft fur Schwerionenforschung Darmstadt Germany.Gesellschaft fur Schwerionenforschung Darmstadt Germany.Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute fur Kernphysik University of Frankfurt Germany.Tbilisi State University Georgia.Gesellschaft fur Schwerionenforschung Darmstadt Germany.Gesellschaft fur Schwerionenforschung Darmstadt Germany.Gesellschaft fur Schwerionenforschung Darmstadt Germany.Gesellschaft fur Schwerionenforschung Darmstadt Germany.Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute fur Kerntphysik University of Frankfurt Germany.Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute of Physics Jagiellonian University Cracow Poland.Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute fur Kerrtphysik University of Frankfurt Germany.Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute fur Kerrtphysik University of Frankfurt Germany.Gesellschaft fur Schwerionenforschung Darmstadt Germany.Institute of Nuclear Studies Cracow Ppland.Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute of Physics Jagiellonian University Cracow Poland.

K-shell ionization for Li-like uranium ions in collisions with a N2 target was performed at the ESR storage ring. We found surprisingly that in such close encounters the 2 s electron remain almost unaffected by the collisions. A dedicated experimental study was conducted by using Li-like uranium ions at an initial energy of 378 MeV/u in order to manifest the situation. In Fig.1 a typical spectrum is shown registered by a Ge(i)

关键词：碰撞电离类氦铀离子超选择布居 S态原子物理学 X射线衍射光谱分析辐射强度

Exclusive Population of n=2 S-states in He-like uranium by Ionization Process

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IMP & HIRFL Annual Report 2002年 76-76页

作者： Ma Xinwen,D.Banas,Th.Sthlker,H.F.Beyer,F.Bosch,A.Br(?)uning-Demian,A.Gumberidze,S.Hagmann,C.Kozhuharov,P.H.Mokler,R.Mann,A.Orsic Muthig,D.Sierpowski,u.spillmann,S.Tachenov,Z.Stachura,A.Warczak Gesellschaft fiir Schwerionenforschung Darmstadt Germany. Gesellschaft fur SchwerionenforschunK Darmstadt Germany. Institute of Physics Swietokrzyslta Academy Kielce Poland. Gesellschaft fur Schwerlonenforschung Darmstadt Germany. Institute fur Kerrtphysik university of Frankfurt Germany. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute fur Kernphysik university of Frankfurt Germany. Tbilisi State university Georgia. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute fur Kerntphysik university of Frankfurt Germany. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute of Physics Jagiellonian university Cracow Poland. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute fur Kerrtphysik university of Frankfurt Germany. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute fur Kerrtphysik university of Frankfurt Germany. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute of Nuclear Studies Cracow Ppland. Gesellschaft fur Schwerionenforschung Darmstadt Germany. Institute of Physics Jagiellonian university Cracow Poland.

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Nanoparticle type effects on flexural, interfacial and vibration properties of GFRE composites

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Chinese Journal of Aeronautics 2016年第2期29卷 520-533页

作者： u.A.Khashaba Mechanical Engineering Department Faculty of Engineering King Abdulaziz University

Damping improvement in composite structures via introducing nanofillers generally has remarkable negative effects on the other mechanical properties. Therefore, in the present work, SiC and A1203 nanoparticles＇ infusion effects on the flexural, interracial and vibration properties of epoxy matrix and glass fiber reinforced epoxy （GFR/E） laminates were investigated. unidirectional （uD-GFR/E） and quasi-isotropic （QI-GFR/E） laminates with [0/± 45/90]s and [90/±45/0]s stack- ing sequences were hybridized by the optimum nanoparticles percentages. Results from off-axis flexural strengths of uD-GFR/E demonstrate good fiber/nanophased-matrix interracial bonding. The interlaminar shear stress between the adjacent layers with different orientations/strains of duc- tile QI-GFR/SiC/E laminates results in decreasing the flexural strengths respectively by 24.3% and 9.1% for [0/±45/90]s and [90/± 45/0]s stacking sequences and increasing the dissipated interfacial friction energy and thus the damping by 105.7% and 26.1%. The damping of QI-GFR/E, QI-GFR/SiC/E and QI-GFR/AI203/E laminates with [90/± 45/0]s stacking sequence was increased by 111.4%, 29.7% and 32.9% respectively compared to [0/± 45/90]s stacking sequence.

关键词： Flexural properties GFRE composites Interracial bonding Nanoparticles Non-destructive vibrationtechnique

General investigation for longitudinal wave propagation under magnetic field effect via nonlocal elasticity

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Applied Mathematics and Mechanics(English Edition) 2015年第10期36卷 1305-1318页

作者： u.GVEN Department of Mechanical Engineering Yildiz Technical University

In this paper, the propagation of longitudinal stress waves under a longitu- dinal magnetic field is addressed using a unified nonlocal elasticity model with two scale coefficients. The analysis of wave motion is mainly based on the Love rod model. The effect of shear is also taken into account in the framework of Bishop＇s correction. This analysis shows that the classical theory is not sufficient for this subject. However, this unified nonlocal elasticity model solely used in the present study reflects in a manner fairly realistic for the effect of the longitudinal magnetic field on the longitudinal wave propagation.

关键词： Rayleigh-Bishop rod nonlocal elasticity magnetic field wave propagation

Physico-chemical characterization of a farmland affected by wastewater in relation to heavy metals

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Journal of Zhejiang university-Science A(Applied Physics & Engineering) 2008年第3期9卷 366-372页

作者： Emmanuel u. ONWEREMADu Department of Soil Science and Technology Federal university of Technology PMB 1526 Owerri Nigeria

This study investigated selected properties of soils affected by wastewater and its relationship with some heavy metals. A free survey technique involving target sampling was used in siting soil profile pits. Soil samples were collected based on horizon differentiation and analyzed using routine and special analytical techniques. Soil data were subjected to correlation analysis using SAS program. Results show that all heavy metals studied had values above critical limits in the polluted soils using known standards and that these biotoxic metals decreased with soil depths. Highly significant (P=0.01 and 0.05) relationships were established between investigated heavy metals and some soil properties, especially soil pH and organic matter. Further studies involving more edaphic properties, biotoxic metals and their bioaccessibility in crops growing on wastewater soils will surely enhance knowledge and management of these highly anthropogenically influenced soils of the study site.

关键词： Bioavailability Characterization Heavy metals Soil pollution Wastewater

Semi-solid near-net shape rheocasting of heat treatable wrought aluminum alloys

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Transactions of Nonferrous Metals Society of China 2010年第9期20卷 1719-1724页

作者： u.A.C uRLE Materials Science and Manufacturing Council for Scientific and Industrial Research

Flexibility of the CSIR-RCS, induction stirring with simultaneous air cooling process, in combination with high pressure die casting is successfully demonstrated by semi-solid rheocasting of plates performed on commercial 2024, 6082 and 7075 wrought aluminum alloys. Tensile properties were measured for the above mentioned rheocast wrought aluminum alloys in the T6 condition. The results showed that tensile properties were close to or even in some cases exceeded the minimum specifications. The yield strength and elongation of rheocast 2024-T6 exceeded the minimum requirements of the wrought alloy in the T6 condition but the ultimate tensile strength achieved only 90% of the specification because the Mg content of the starting alloy was below the commercial alloy specification. The strengths of rheocast 6082-T6 exceeded all of the wrought alloy T6 strength targets but the elongation only managed 36% of the required minimum due to porosity, caused by incipient melting during solution heat treatment, and the presence of fine intermetallie needles in the eutectic. The yield strength of rheocast 7075 exceeded the required one and the ultimate tensile strength also managed 97% of the specification; while the elongation only reached 46% of the minimum requirement also due to incipient melting porosity caused during the solution heat treatment process.

关键词： high pressure die casting (HPDC) aluminum alloys as-cast condition T6 treatment incipient melting

Photoproduction of multi-meson final states–recent results from the Crystal-Barrel/TAPS experiment at ELSA-

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Chinese Physics C 2009年第12期33卷 1105-1112页

作者： u. Thoma HISKP Universitt Bonn Nussallee 14-16 53115 Bonn Germany

Multi-meson final states such as γp →pπ0π0 and γp →pπ0η have been investigated with the Crystal-Barrel/TAPS experiment at ELSA. Baryon cascades via △π and △η and also via higher mass baryon resonances are clearly observed. Based on this data and on data from other reactions a partial wave analysis has been performed from which partial decay widths of various N＊ and △＊ states into the different pπ0π0 and pπ0η decay channels have been determined, leading partly to unexpected results. In addition, polarisation observables have been investigated. The beam asymmetry X has been determined for both reactions and double polarisation data using a longitudinally polarised target and a circularly or linearly polarised photon beam has been taken. Given the angular coverage of the Crystal-Baxrel/TAPS experiment this data covers almost the full angular range and phase space. This data will provide new and important information for the partial wave analyses and bring us one step closer towards a complete experiment.

关键词： baryon spectroscopy photoproduction multi-meson final states polarisation observables

ADVANCED NICKEL-BASED AND NICKEL-IRON-BASED SuPERALLOYS FOR CIVIL ENGINEERING APPLICATIONS

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Acta Metallurgica Sinica(English Letters) 2005年第4期18卷 453-462页

作者： u. Brill ThyssenKrupp VDM GmbH 58791 Werdohl Germany

The use of high-temperature materials is especially important in power station construction, heating systems engineering, furnace industry, chemical and petrochemical industry, waste incineration plants, coal gasification plants and for flying gas turbines in civil and military aircrafts and helicopters. Particularly in recent years, the development of new processes and the drive to improve the economics of existing processes have increased the requirements significantly so that it is necessary to change from well-proven materials to new alloys. Hitherto, heat resistant ferritic steels sufficed in conventional power station constructions for temperatures up to 550℃ newly developed ferritic/martensitic steels provide sufficient strength up to about 600 - 620℃. In new processes, e.g. fluidized-bed combustion of coal, process temperatures up to 900℃ occur. However, this is not the upper limit, since in combustion engines, e.g. gas turbines. Material temperatures up to 1100℃ are reached locally. Similar development trends can also be identified in the petrochemical industry and in the heat treatment and furnace engineering. The advance to ever higher material temperatures now not only has the consequence of having to use materials with enhanced high-strength properties, considerable attention now also has to be given to their chemical stability in corrosive media. Therefore not only examples of the use of high-temperature alloys for practical applications will be given but also be contributed to some general rules for material selection with regard to their high-temperature strength and corrosion resistance.

关键词： nickel-based alloy high-temperature strength high-temperature corrosion resistance civil engineering application