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Inter-relationship of Various Results in Analysis of （14.0 MeV／u） Pb＋Pb Reaction using Mica and Cn-85 Track Detectors

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Chinese Physics Letters 2005年第1期22卷 69-71页

作者： F.n.Khattak E.u.Khan Tabassumnasir j.j.Baluch F.u.Khan u.W.C. GomalUniversityDeraIsmailKhanPakistan RadiationPhysicsDivision PINSTECHNiloreIslamabadPakistan DepartmentofPhysics GomalUniversityDeraIsmailKhanPakistan

Two detector materials mica and cellulose-nitrate(Cn)-85 have been used to study (14.0MeV/u) Pb + Pb reaction. Events of different multiplicities were registered in mica and Cn-85 detectors using the 2π-geometry technique of solid state nuclear track detection. After removing the target material from the detectors the damaged trails in the detectors were revealed as tracks by proper chemical etching. The irradiated area of each sample was scanned and events of different multiplicities were traced. The binary events were bifurcated into elastic and inelastic events. The elastic binary events and three prong events, observed in the reaction, have been used to search out coefficients Cμν in the presence of both the detectors, for the reaction under study. using these coefficients 3- and 4-prong events have been analysed. From the detailed analysis of the results of (14.0MeV/u) Pb+Pb reaction, obtained from mica and Cn-85 track detectors we observed a great resemblance of results obtained from the two detectors. Combining the results of both the detectors, we report some important outcomes.

关键词： Cn-85轨迹探测器高能物理学铅原子碰撞反应固态

Petrographic composition of coal within the Benue Trough,nigeria and a consideration of the paleodepositional setting

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International journal of Coal Science & Technology 2022年第3期9卷 67-90页

作者： A.D.Mangs n.j.Wagner O.M.Moroeng u.A.Lar DSI-nRF CIMERA Department of GeologyUniversity of JohannesburgJohannesburgSouth Africa Department of Geology University of JosJosNigeria

The petrographic composition of Cretaceous-age coals hosted in the Benue Trough,nigeria is presented and discussed in terms of the paleodepositional settings that infuenced the coal-bearing *** Benue Trough is a failed arm of the triple junction of an inland sedimentary basin that extends in a nE-SW direction from the Gulf of Guinea in the south,to the Chad Basin in the north.A total of twenty-nine(29)coal samples were obtained from nineteen coal localities in the upper(uBT),Middle(MBT),and Lower Benue Trough(LBT).The high average volatile matter yield,low average ash yield,high calorifc value(24.82 Mj/kg,on average),and low sulphur values indicate good quality coal *** organic matter is dominated by vitrinite,reported at an average of 59.3%by volume(mineral-matter free).Variation was noted in the inertinite content across three *** macerals were not commonly observed in the studied samples and were absent in the MBT *** facies studies decipher the paleoenvironmental conditions under which the vegetation *** commonly used are the gelifcation index(GI),tissue preservation index(TPI),ground water index(GWI and variations),vegetation index(VI),and wood index(WI).Comparing the array of coal facies models applied,the MBT samples difer from the uBT and LBT samples,concurring with the coal quality *** uBT and LBT coals formed in an upper deltaic to drier piedmont plane depositional environment,while the MBT coal formed in a lower deltaic marsh to wet forest swamp depositional *** samples indicate an ombrotrophic *** view of the modifed equations and the plots used,interpreting depositional environments from just a single model is not reliable.

关键词： Benue Trough Coal petrography Depositional environment Microlithotypes Vitrinite

Mass Transfer： a Deciding Factor for the Multiplicity of an Event in Deep Inelastic Collisions

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Chinese Physics Letters 2006年第10期23卷 2714-2716页

作者： Tabassum nasir j.j.Baluch E.u.Khan F.n.Khattak M.I.Shahzad Department of Physics Gomal University D.I. Khan Pakistan Department of Physics CIIT Islamabad Pakistan u.W.C. Gomal UniversityD.I.KhanPakistan physics Research Division PINSTECH Islamabad Pakistan

Intermediate stage of the three and four-pronged events is investigated in the reaction ^208Pb＋^197Au at beam energy 11.67 MeV/u. Multiprong events are analysed numerically using an empirical mass-dependent velocityrauge relation. using the measured three-dimensional coordinates of correlated tracks, it is possible to determine the quantities such as mass transfer and total kinetic energy loss. These quantities are then used to study the intermediate stage of the reaction. It has been observed that mass transfer and total kinetic energy loss at the first step of the reaction decides the multiplicity of an event at the second stage of the sequential fission process.

关键词： HEAVY-IOn InTERACTIOn MICA TRACK DETECTORS CHAnnELS FISSIOn u-238

Bistability in Coupled Oscillators Exhibiting Synchronized Dynamics

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Communications in Theoretical Physics 2010年第5期53卷 815-824页

作者： O.I.Olusola u.E.Vincent A.n.njah j.A.Olowofela Department of Physics University of Agriculture Department of Physics Lancaster University Institut fur Theoretische Physik Technische Universitt Clausthal Department of Physics Olabisi Onabanjo University

We report some new results associated with the synchronization behavior of two coupled double-well Duffing oscillators （DDOs）. Some sufficient algebraic criteria for global chaos synchronization of the drive and response DDOs via linear state error feedback control are obtained by means of Lyapunov stability theory. The synchronization is achieved through a bistable state in which a periodic attractor co-exists with a chaotic attractor. using the linear perturbation analysis, the prevalence of attractors in parameter space and the associated bifurcations are examined. Subcritical and supercritical Hopf bifurcations and abundance of Arnold tongues -- a signature of mode locking phenomenon are found.

关键词： chaos synchronization Duffing oscillator bistability Lyapunov stability theory

Superstatistics of Modified Rosen-Morse Potential with Dirac Delta and uniform Distributions

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Communications in Theoretical Physics 2019年第10期71卷 1246-1252页

作者： u.S.Okorie A.n.Ikot G.j.Rampho R.Sever Department of Physics AkwaIbom State UniversityIkotAkpadenUyo.Nigeria Department of Physics University of Port HarcourtChobaNigeria Department of Physics University of South AfricaFlorida Park1710South Africa Department of Physics Middle East Technical University06800AnkaraTurkey

We discuss the thermodynamic properties of a modified Rosen-Morse potential using the q-deformed superstatistics approaches. We obtain the partition function with the help of the generalized Boltzmann factor from the modified Dirac delta distribution and uniform distribution. Other thermodynamic function is obtained for the superstatistics of the two distributions considered. We also discuss our results graphically and obtain the ordinary statistical quantities when the deformation parameter tends to zero.

关键词： superstatistics partition function thermodynamic function

Delamination Testing of AlSi10Mg Sandwich Structures with Pyramidal Lattice Truss Core made by Laser Powder Bed Fusion

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Chinese journal of Mechanical Engineering 2021年第6期34卷 51-62页

作者： M.nuño j.Bühring M.n.Rao K.-u.Schröder Institute of Structural Mechanics and Lightweight Design RWTH Aachen UniversityWüllnerstraβe 752072 AachenGermany

Sandwich structures possess a high bending stiffness compared to monolithic structures with a similar *** makes them very suitable for lightweight applications,where high stiffness to weight ratios are *** common manufacturing methods of sandwich structures involve adhesive bonding of the core material with the ***,adhesive bonding is prone to delamination,a failure mode that is often difficult to *** paper presents the results of delamination testing of fully additive manufactured(AM)AlSi10Mg sandwich structures with pyramidal lattice truss core using Laser Powder Bed Fusion(LPBF).The faces and struts are 0.5 mm thick,while the core is 2 mm *** inclination of the struts is 45°.To characterise the bonding strength,climbing drum peel tests and out-of-plane tensile tests are *** formulas are derived to predict the expected failure loads and *** analytics and tests are supported by finite element(FE)*** the analytic approach,design guidelines to avoid delamination in AM sandwich structures are *** study presents a critical face sheet thickness to strut diameter ratio for which the structure can *** ratio is mainly influenced by the inclination of the *** peel tests resulted in face yielding,which can also be inferred from the analytics and *** out-of-plane tensile tests didn’t damage the structure.

关键词： Additive Manufacturing Sandwich Structures Pyramidal Lattice Core

Optical coating and nano-structuring on plastics

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光学精密工程 2005年第4期13卷 459-464页

作者： u. Schulz P. Munzert A. Kaless n. Kaiser Fraunhofer Institut für Angewandte Optik und Feinmechnik Albert-Einstein-Str. 7 D-07745 Jena GermanyFraunhofer Institut für Angewandte Optik und Feinmechnik Albert-Einstein-Str. 7D-07745 Jena GermanyFraunhofer Institut für Angewandte Optik und Feinmechnik Albert-Einstein-Str. 7D-07745 Jena GermanyFraunhofer Institut für Angewandte Optik und Feinmechnik Albert-Einstein-Str. 7D-07745 Jena Germany

The coating of plastics for optical applications is intended to improve the mechanical durability of soft polymers and to serve an antireflection function. usually a classic four-layer antireflection system is added on top of a single-layer hard coating. With needle optimisation,an alternative coating design has been developed. Plasma ion assisted deposition was used to deposit coatings upon polymers. uniform antireflection and high scratch resistance have been achieved.

关键词：光学涂覆技术纳米结构塑料光学仪器

Green leaching and predictive model for copper recovery from waste smelting slag with choline chloride-based deep eutectic solvent

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Chinese journal of Chemical Engineering 2024年第11期75卷 14-24页

作者： Mehmet Ali Topçu Seyit AlperenÇeltek Aydın Rüsen Karamanoglu Mehmetbey university Metallurgical and Material EngineeringKaraman 999042Turkiye Karamanoglu Mehmetbey university Energy Systems EngineeringKaraman 999042Turkiye

This research was performed to investigate the optimization of copper recovery from copper smelting slag(CSS)with a deep eutectic solvent as a green *** effect of important parameters on the leaching efficiency of copper and zinc(as well as dissolution of iron),such as leaching time,leaching temperature,solid/liquid ratio,and particle size was *** order to model the copper recovery,an optimization method was *** to the chemical analysis of CSS,the slag contains 0.9%copper,3.3%zinc,and 36.7%***,it was found that the CSS is mainly composed of Fe2SiO4,Fe3O4 and ***-containing structures were determined as CuO and *** a result of leaching experiments,80%copper and 61%zinc recoveries were obtained at 48 h,95℃,1/25 g·ml^(-1),and-33 *** is noted that the iron and silicon dissolution remained negligible under the selected *** to the mathematical model,the highest copper leaching efficiency(up to 100%)could be under optimum working conditions as 48.5℃leaching temperature,40.1 h leaching duration,and 62.3 ml·g^(-1)solid/liquid ***,the proposed model revealed that a wide range of experimental levels can be used as leaching parameter to get desired metal leaching efficiency.

关键词： Deep eutectic solvents Copper smelting slag Metal leaching Hydrometallurgy Grey wolf optimizer

Heat transfer on peristaltic flow of fourth grade fluid in inclined asymmetric channel with partial slip

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Applied Mathematics and Mechanics(English Edition) 2012年第10期33卷 1313-1328页

作者： O.u.MEHMOOD n.MuSTAPHA S.SHAFIE Department of Mathematics Faculty of ScienceUniversiti Teknologi Malaysia81310 UTM JohorJohor BharuMalaysia

In this paper, the effects of slip and heat transfer are studied on the peristaltic transport of a magnetohydrodynamic （MHD） fourth grade fluid. The governing equations are modeled and solved under the long wavelength approximation by using a regular perturbation method. Explicit expressions of solutions for the stream function, the velocity, the pressure gradient, the temperature, and the heat transfer coefficient are presented. Pumping and trapping phenomena are analyzed for increasing the slip parameter. Further, the temperature profiles and the heat transfer coefficient are observed for various increasing parameters. It is found that these parameters considerably affect the considered flow characteristics. Comparisons with published results for the no-slip case are found in close agreement.

关键词： peristaltic flow fourth grade fluid heat transfer slip condition inclinedchannel