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真空与低温 1993年第4期 229-229页

作者：高德铨刘竹忠 h.grimm

德国 Lh 公司1992年推出了 TopMet 系列新一代的包装薄膜真空卷绕镀膜机,它除了具有高可靠性,易于操作与安装外还具有先进的蒸发器技术。蒸发器系统是镀膜机的中心部件,它的类型及结构影响着镀膜工艺,决定了膜层质量亦即最终产品已镀薄... 详细信息

德国 Lh 公司1992年推出了 TopMet 系列新一代的包装薄膜真空卷绕镀膜机,它除了具有高可靠性,易于操作与安装外还具有先进的蒸发器技术。蒸发器系统是镀膜机的中心部件,它的类型及结构影响着镀膜工艺,决定了膜层质量亦即最终产品已镀薄膜卷的质量。现今使用的电阻加热陶瓷蒸发舟蒸发器系统主要特点是蒸发舟成直线排列,采用端面夹

关键词：蒸发舟直线排列端面蒸发器浓缩器真空室低压室

Induction System for a Fusion Reactor: Quantum Mechanics Chained up

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Journal of high Energy Physics, Gravitation and Cosmology 2024年第1期10卷 158-166页

作者： Friedrich Björn grimm CEO of RES-Institute Stuttgart Germany

In the quest for a sustainable and abundant energy source, nuclear fusion technology stands as a beacon of hope. This study introduces a groundbreaking quantum mechanically effective induction system designed for magnetic plasma confinement within fusion reactors. The pursuit of clean energy, essential to combat climate change, hinges on the ability to harness nuclear fusion efficiently. Traditional approaches have faced challenges in plasma stability and energy efficiency. The novel induction system presented here not only addresses these issues but also transforms fusion reactors into integrated construction systems. This innovation promises compact fusion reactors, marking a significant step toward a clean and limitless energy future, free from the constraints of traditional power sources. This revolutionary quantum induction system redefines plasma confinement in fusion reactors, unlocking clean, compact, and efficient energy production.

关键词： Fusion Reactor Plasma Confinement Quantum Mechanics Clean Energy

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胆囊切除术前常规胃镜检查的意义及治疗结果

德国医学 1996年第3期13卷 176-176页

作者： Anja Thybusch h.Schaube E.Schweizer D.Gollnick h.grimm 严群 Klinik fr Allgemeine Chirurgie und Thoraxchirurgie der Christian-Albrechts-Universitt zu Kiel Arnold-heller-Str.7 D-24105 KielGermany 同济医科大学附属同济医院

胆囊切除术前是否常规行胃镜检查一直有争论,一方面是对胃镜检查50%病理性改变的临床意义提出了疑问,另一方面是其致并发症的危险性。我们在1991年1月1日～1992年12月31日间对胆囊切除术前的病例行了胃镜检查,对胃镜检查与手术计划和临... 详细信息

胆囊切除术前是否常规行胃镜检查一直有争论,一方面是对胃镜检查50%病理性改变的临床意义提出了疑问,另一方面是其致并发症的危险性。我们在1991年1月1日～1992年12月31日间对胆囊切除术前的病例行了胃镜检查,对胃镜检查与手术计划和临床症状的关系进行了研究。

关键词：胆囊切除术手术前胃镜检治疗

Vine pruning waste-based activated carbon for cerium and lanthanum adsorption from water and real leachate

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Journal of Rare Earths 2024年第10期42卷 1960-1968页

作者： Raphael Forgearini Pinheiro Alejandro grimm Kátia da Boit Martinello Mohammad Rizwan Khan Naushad Ahmad Luis Felipe Oliveira Silva Irineu Antônio Schadach De Brum Guilherme Luiz Dotto Glaydson Simões dos Reis Research Group on Adsorptive and Catalytic Process Engineering(ENGEPAC) Federal University of Santa MariaAv.Roraima1000-797105900Santa MariaRSBrazi Department of Forest Biomaterials and Technology Biomass Technology CentreSwedish University of Agricultural SciencesUmed SE-90183Sweden Universidad De La Costa Calle 58#55-66080002BarranquillaAtlanticoColombia Department of Chemistry College of ScienceKing Saud UniversityRiyadh11451Kingdom of Saudi Arabia Institute of Chemistry Federal University of Rio Grande do Sul90040-060Porto AlegreBrazil

In this study,vine pruning wastes(VPW)were used as raw material to develop an alternative activated carbon(VPW-AC)for adsorbing and concentrating rare earth elements cerium(Ce(Ⅲ))and lanthanum(La(Ⅲ))from synthetic and real leachate *** Ce and La adsorption studies evaluated the effects of VPW-AC dosage,ph,contact time,rare earth initial concentration,and *** VPW-AC adsorbent was subjected to many physicochemical characterization methods to correlate and understand its adsorptive *** characterization data indicate a carbonaceous adsorbent with a specific surface area of 467 m^(2)/*** potential indicates a material with a negatively charged surface at a ph higher than 3.1,which is extremely beneficial to cations *** both rare earths elements(REEs),the adsorption capacity increases with the increase of the ph,reaching its maximum at ph *** kinetic data are well fitted by Avrami-fractional o rder,while the Liu model agreeably fits equilibrium *** maximum adsorption capacities for Ce(Ⅲ)and La(Ⅲ)are 48.45 and 53.65 mg/g at 298 K,*** thermodynamic studies suggest that the adsorption process is favorable,spontaneous,and exothermic for both *** filling,surface complexation,and ion exchange are the dominant ***,the VPW-AC was subjected to the recovery of REEs from real phosphogypsum leachate,and it is proved that it can be successfully used to recover REEs in a real process.

关键词： Vine pruning wastes Sustainable carbon adsorbent Rare earth elements Phosphogypsum leachate Ion-exchange mechanism

Free vibration and buckling analysis of polymeric composite beams reinforced by functionally graded bamboo fbers

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Applied Mathematics and Mechanics(English Edition) 2024年第3期45卷 543-562页

作者： h.M.FEIZABAD M.h.YAS Department of Mechanical Engineering Razi UniversityKermanshah ***Iran

Natural fibers have been extensively researched as reinforcement materials in polymers on account of their environmental and economic advantages in comparison with synthetic fibers in the recent *** fibers are renowned for their good mechanical properties,abundance,and short cycle *** beams are one of the fundamental structural components and are susceptible to mechanical loads in engineering applications,this paper performs a study on the free vibration and buckling responses of bamboo fiber reinforced composite(BFRC)beams on the elastic *** different functionally graded(FG)layouts and a uniform one are the considered distributions for unidirectional long bamboo fibers across the *** elastic properties of the composite are determined with the law of *** hamilton’s principle,the governing equations of motion are *** generalized differential quadrature method(GDQM)is then applied to the equations to obtain the *** achieved outcomes exhibit that the natural frequency and buckling load values vary as the fiber volume fractions and distributions,elastic foundation stiffness values,and boundary conditions(BCs)and slenderness ratio of the beam ***,a comparative study is conducted between the derived analysis outcomes for BFRC and homogenous polymer beams to examine the effectiveness of bamboo fibers as reinforcement materials,demonstrating the significant enhancements in both vibration and buckling responses,with the exception of natural frequencies for cantilever beams on the Pasternak foundation with the FG-◇fiber ***,the obtained analysis results of BFRC beams are also compared with those for carbon nanotube reinforced composite(CNTRC)beams found in the literature,indicating that the buckling loads and natural frequencies of BFRC beams are lower than those of CNTRC beams.

关键词： bamboo fiber free vibration buckling analysis functionally graded(FG)beam elastic foundation generalized differential quadrature method(GDQM)

holographic dark energy in non-conserved gravity theory

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Communications in Theoretical Physics 2024年第4期76卷 126-133页

作者： h R Fazlollahi Institute of Gravitation and Cosmology Peoples Friendship University of Russia(RUDN University)6 Miklukho-Maklaya StMoscow117198Russia

Recently, reconsidering the Rastall idea T_(μ;νν)^(v)=α_(,μ) through relativistic thermodynamics gives a new form for the scalar field α which led us to construct modern modified theory of gravity debugged ‘non-conserved gravity theory’ Fazlollahi 2023 Euro. Phys. J. C 83 923. This theory unlike other modified theories of gravity cannot directly explain the current acceleration expansion in the absence of the cosmological constant and or existence of other forms of dark energy. hence, in this study we have reinvestigated holographic dark energy Ρ_(X)~h^(2) in the non-conserved theory of gravity. In this context, the density and pressure of dark energy depend on the non-conserved term and density of the dust matter field. As shown, due to non-conservation effects on large-scale structures, unlike the original holographic model, our model onsets an acceleration epoch for the current Universe satisfies observations. Moreover, the interaction and viscous scenarios are studied for this model.

关键词： non-conserved gravity covariant form of thermodynamics holographic dark energy

Novel synthesis of stabilized Bi_(1-x-y)Gd_xDy_yO_(1.5) solid electrolytes with enhanced conductivity for intermediate temperature solid oxide fuel cells(SOFCs)

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Journal of Rare Earths 2024年第10期42卷 1903-1911页

作者： Ahmed h.Ibrahim Yehia M.Abbas h.A.Ayoub Marwa h.Ali Mustafa Aldoori Materials Science Laboratory Physics DepartmentFaculty of ScienceSuez Canal University41522IsmailiaEgypt Ministry of higher Education and Scientific Research Aliraqia University10011BaghdadIraq

herein,we report the synthesis of a Dy-Gd co-doped cubic phase-stabilized Bi_(2)O_(3) solid electrolyte system via solid-state processing under atmospheric *** with Dy^(3+) and Gd^(3+) has been observed to significantly enhance the densification process during sintering for stabilization purposes,thereby improving the electrical properties of δ-Bi_2O_(3)-type *** synthesized ceramics were characterized using X-ray diffraction(XRD),field emission scanning electron microscopy-energy dispersive X-ray spectroscopy(FESEM-EDX),thermal gravimetry/differential thermal analysis(TG/DTA),and the four-point probe technique(4PPT).XRD analysis reveals that the samples Bi_(1-x-y)Gd_(x)Dy_(y)O_(1.5)(y=0.05/x=0.05,0.10,0,15,and 0.20,and x=0.05/y=0.10,0.15,and 0.20) exhibit a stable face-centered cubic δ-phase and a mixed-phase crystallographic *** XRD analysis of the stabilized δ-phase suggests that the prepared oxides show a face-centered cubic(FCC) structure with a space group of *** micrographs reveal that the composition Bi_(0.90)Gd_(0.05)Dy_(0.05)O_(1.5) has no significant ***,an evident increase in the pore formation is observed as the amount of Gd_(2O_(3) increases until it reaches 20%.This finding suggests that dense pellets are formed during the sintering process at 900-1000℃.The DTA analyses were performed to verify the phase stability,which agrees with the XRD *** electrochemical performance of the synthesized Dy-Gd co-doped Bi_2O_(3)solid electrolyte system was evaluated and analyzed in detail by using the electrochemical impedance spectroscopy(EIS) technique,Based on EIS and conductivity measurements,Bi_(0.75)Gd_(0.20)Dy_(0.05)O_(1.5) exhibits the lowest activation energy of 0.519 eV and the highest conductivity value of 0.398 S/cm at 627℃compared to the other samples;this composition can be used as a solid electrolyte for intermediatetemperature solid oxide fuel cells(SOFCs).

关键词： Solid oxide fuel cells(SOFCs) Rare earths Solid-state processing Rietveld Fast Fourier transform(FFT) Electrochemical impedance spectroscopy(EIS)

Shell-model representations of the microscopic version of the Bohr-Mottelson collective model

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Communications in Theoretical Physics 2024年第8期76卷 79-90页

作者： h G Ganev Joint Institute for Nuclear Research DubnaRussia Institute of Mechanics Bulgarian Academy of SciencesSofiaBulgaria

The structure of the irreducible collective spaces of the group Sp(12,R),which many-particle nuclear states are classified according to the chain Sp(12,R)⊃U(6)⊃SO(6)⊃SU_(pn)(3)⊗SO(2)⊃SO(3)of the proton-neutron symplectic model(PNSM),is considered in *** chain of the PNSM was recently shown to correspond to a microscopic shell-model version of the Bohr-Mottelson collective *** construction of the relevant shell-model representations of the Sp(12,R)group along this chain is considered for three nuclei with varying collective properties and from different mass *** is shown that the SU_(pn)(3)basis states of the Sp(12,R)representations belonging to the SO(6)irreps with seniorityυ≥υ0,withυ0 denoting the maximal seniority SO(6)irrep contained in the Sp(12,R)bandhead,are always Pauli allowed,but organized in a different way into different SO(6)*** is in contrast to the case of filling the levels of the standard three-dimensional harmonic oscillator and using the plethysm *** the SU_(pn)(3)multiplets withinυhe present work are important for the practical application of the microscopic version of the Bohr-Mottelson collective model.

关键词： microscopic shell-model version of the Bohr-Mottelson model proton-neutron symplectic model Sp(12,R)dynamical algebra shell-model representations

Convexification of hybrid AC-DC Optimal Power Flow with Line-Commutated Converters

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CSEE Journal of Power and Energy Systems 2024年第2期10卷 617-628页

作者： hongyuan Liang Zhigang Li J.h.Zheng Q.h.Wu School of Electric Power Engineering South China University of TechnologyGuangzhou 510641China

Line-commutated converter (LCC)-based high-voltage DC (hVDC) systems have been integrated with bulk AC power grids for interregional transmission of renewable power. The nonlinear LCC model brings additional nonconvexity to optimal power flow (OPF) of hybrid AC-DC power grids. A convexification method for the LCC station model could address such nonconvexity but has rarely been discussed. We devise an equivalent reformulation for classical LCC station models that facilitates second-order cone convex relaxation for the OPF of LCC-based AC-DC power grids. We also propose sufficient conditions for exactness of convex relaxation with its proof. Equivalence of the proposed LCC station models and properties, exactness, and effectiveness of convex relaxation are verified using four numerical simulations. Simulation results demonstrate a globally optimal solution of the original OPF can be efficiently obtained from relaxed model.

关键词： AC-DC power system convex relaxation linecommutated converter optimal power flow second-order cone programming