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sIMULATION OF 3-D DEFORMATION AND MATERIAL FLOW DURINg ROLL FORgINg PROcEss UsINg sYsTEM OF OVAL-ROUND gROOVE

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Acta Metallurgica sinica(English Letters) 2007年第5期20卷 380-384页

作者： g.H. Liu g.s. Ren c.g. Xu Beijing Research Institute of Mechanical ＆ Electrical Technology Beijing 100083 China Huazhong University of science and Technology Wuhan 430074 China

Basing on the analysis of the traits of the roll forging process, a system-model of computer simulation has been established. Three-dimensional rigid-plastic FEM has been used for the simulation of the deformation process in the oval and round pass rolling, including the entering, rolling, and separating stages. The analysis was conducted using the Deform-3D ver.5.0 code. The important information concerned with the deformation area characteristic, material flow, and velocity field has been presented. Otherwise, the location of the neutral plane in the deformation area was shown clearly.

关键词： numerical simulation 3-D deformation roll forging

On the friction effects on rigid-body penetration in concrete and aluminium-alloy targets

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Defence Technology（防务技术） 2019年第4期15卷 576-581页

作者： c.g. chai A.g. Pi Q.M. Li F.L. Huang Institute of chemical Materials China Academy of Engineering Physics Mianyang Sichuan 621900 China state Key Laboratory of Explosion science and Technology Beijing Institute of Technology Beijing 100081 China school of Mechanical Aerospace and Civil Engineering University of Manchester Manchester M13 9PL UK

The friction on the projectile shank is usually excluded in the penetration analysis due to the difficulties to measure the pressure and frictional *** this article,the frictional force on projectile shank is discussed indirectly through the comparison between experimental data and empirical/analytical formulas of the penetration depth for both concrete and aluminium-alloy *** is found that the effect of the frictional force along the projectile shank can be further discussed by the afore comparison and discussion and cannot be ignored because of the relatively large effecting area,especially for deep penetration of concrete and aluminium-alloy targets,where the friction will account for more proportion of penetration resistance.

关键词： Penetration Friction concrete Aluminium

status and prospects for symmetric organic redox flow batteries

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Journal of Energy chemistry 2025年第1期100卷 125-143页

作者： Md Al Raihan c.Adam Dyker Department of chemistry University of New Brunswick

As environmental concerns from fossil fuel consumption intensify, large-scale energy storage becomes imperative for the integration of renewable sources like wind, hydro, and solar with the electrical *** flow batteries, particularly those employing organic molecules, are positioned as a key technology for this purpose. This review explores the growing field of symmetric organic redox flow batteries(ORFBs) within this context. Unlike traditional asymmetric designs based on unique active materials for each electrode, symmetric ORFBs involve a single bipolar species for both electrodes. This review highlights the benefits of a symmetric design, and categorizes five distinct classes of organic bipolar molecules used in both aqueous and non-aqueous solvents. By providing a comprehensive overview of their cell cycling and performance characteristics, the strengths and weaknesses of the diverse categories of bipolar molecules are highlighted for both solvent systems, as are opportunities for future development. This should guide new research directions and advance the development of practical symmetric ORFBs.

关键词： Redox flow battery symmetric battery Organic battery Aqueous electrolyte Non-aqueous electrolyte

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cHARMED BARYONs

chinese Physics c 2016年第10期40卷 819-820页

作者： c.g. Wohl LBNL

（Note added November 2015.） since the 2014 Review, there have been three papers that improved the values of the masses and/or widths of the ∑（2455）, ∑（2520）,

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Acquired sensorineural hearing loss,oxidative stress,and microRNAs

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Neural Regeneration Research 2025年第9期20卷 2513-2519页

作者： Desmond A.Nunez Ru c.g.o Division of Otolaryngology–Head&Neck surgery Department of SurgeryFaculty of MedicineThe University of British ColumbiaVancouverBCCanada Division of Otolaryngology–Head&Neck surgery Gordon&Leslie Diamond Health Care CentreVancouver General HospitalVancouverBCCanada Faculty of Medicine–The University of British columbia VancouverBCCanada

Hearing loss is the third leading cause of human ***-related hearing loss,one type of acquired sensorineural hearing loss,is largely responsible for this escalating global health ***-induced,ototoxic,and idiopathic sudden sensorineural are other less common types of acquired hearing *** etiology of these conditions is complex and multi-fa ctorial involving an interplay of genetic and environmental *** stress has recently been proposed as a likely linking cause in most types of acquired sensorineural hearing *** non-coding RNA sequences known as microRNAs(miRNAs)have increasingly been shown to play a role in cellular hypoxia and oxidative stress responses including promoting an apoptotic *** hair cell death is a central histopathological finding in sensorineural hearing *** these cells do not regenerate in humans,it underlies the irreversibility of human age-related hearing *** EMBAsE,Ovid MEDLINE,Web of science core collection,and *** databases over the period August 1,2018 to July 31,2023 were searched with"hearing loss,""hypoxamiRs,""hypoxia,""microRNAs,""ischemia,"and"oxidative stress"text words for English language primary study publications or registered clinical *** red clinical trials known to the senior author we re also assessed.A total of 222studies were thus *** excluding duplicates,editorials,retra ctions,secondary research studies,and non-English language articles,39 primary studies and clinical trials underwent full-text *** resulted in 11 animal,in vitro,and/or human subject journal articles and 8 registered clinical trial database entries which form the basis of this narrative *** miR-34a and miR-29b levels increase with age in *** miRNAs were demonstrated in human neuroblastoma and murine cochlear cell lines to target sirtuin 1/peroxisome proliferato r-activated receptor gamma coactivator-1-alpha(sIRT1/P gc-1α),sIRT

关键词： hearing loss hypoxia microRNAs oxidative stress sensorineural

silk-based nerve guidance conduits with macroscopic holes modulate the vascularization of regenerating rat sciatic nerve

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Neural Regeneration Research 2025年第6期20卷 1789-1800页

作者： carina Hromada Patrick Heimel Markus Kerbl Lászlógál sylvia Nürnberger Barbara schaedl Jam.s Ferguson Nicole swiadek Xavier Monforte Johannes c.Heinzel Antal Nógrádi Andreas H.Teuschl-Woller David Hercher Department Life science Engineering University of Applied Sciences Technikum WienViennaAustria Austrian cluster for Tissue Regeneration ViennaAustria Ludwig Boltzmann Institute for Traumatology The Research Center in Cooperation with AUVAViennaAustria University clinic of Dentistry Medical University of ViennaViennaAustria Department of Plastic Reconstructive and Aesthetic SurgeryLandesklinikum Wiener Neustadt2700 Wiener NeustadtAustria Department of Anatomy Histology and EmbryologyAlbert Szent-Györgyi Medical SchoolUniversity of SzegedSzegedHungary Medical University of Vienna Department of Orthopedics and Trauma SurgeryDevision of Trauma SurgeryViennaAustria Department of Hand- PlasticReconstructive and Burn SurgeryBG Unfallklinik TuebingenUniversity of TuebingenTuebingenGermany

Peripheral nerve injuries induce a severe motor and sensory deficit. since the availability of autologous nerve transplants for nerve repair is very limited, alternative treatment strategies are sought, including the use of tubular nerve guidance conduits(tNgcs). However, the use of tNgcs results in poor functional recovery and central necrosis of the regenerating tissue, which limits their application to short nerve lesion defects(typically shorter than 3 cm). given the importance of vascularization in nerve regeneration, we hypothesized that enabling the growth of blood vessels from the surrounding tissue into the regenerating nerve within the tNgc would help eliminate necrotic processes and lead to improved regeneration. In this study, we reported the application of macroscopic holes into the tubular walls of silk-based tNgcs and compared the various features of these improved silk^(+) tNgcs with the tubes without holes(silk^(–) tNgcs) and autologous nerve transplants in an 8-mm sciatic nerve defect in rats. Using a combination of micro-computed tomography and histological analyses, we were able to prove that the use of silk^(+) tNgcs induced the growth of blood vessels from the adjacent tissue to the intraluminal neovascular formation. A significantly higher number of blood vessels in the silk^(+) group was found compared with autologous nerve transplants and silk^(–), accompanied by improved axon regeneration at the distal coaptation point compared with the silk^(–) tNgcs at 7 weeks postoperatively. In the 15-mm(critical size) sciatic nerve defect model, we again observed a distinct ingrowth of blood vessels through the tubular walls of silk^(+) tNgcs, but without improved functional recovery at 12 weeks postoperatively. Our data proves that macroporous tNgcs increase the vascular supply of regenerating nerves and facilitate improved axonal regeneration in a short-defect model but not in a critical-size defect model. This study suggests that further optimizatio

关键词： axon regeneration blood vessel functional recovery macroporous nerve lesion peripheral nerve repair sciatic nerve silk-based nerve guidance conduit vascularization

Multiple sclerosis is at a checkpoint: advancing the program

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Neural Regeneration Research 2025年第3期20卷 811-812页

作者： Brandon c.smith Jessica L.Williams Department of Neurosciences Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of Biological Geologicaland Environmental SciencesCleveland State UniversityClevelandOHUSA

Multiple sclerosis(Ms) is a chronic inflammatory and demyelinating disease of the central nervous system(cNs). Patients with Ms experience sensory and motor function loss due to myelin and/or axon damage perpetuated b... 详细信息

关键词： Hauser sclerosis damage

Imaging technologies in oilfield applications

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Journal of Zhejiang University-science A(Applied Physics & Engineering) 2005年第12期6卷 1394-1400页

作者： XIE c.g. NORTH R. WILT M. ZHANg P. DENAcLARA H. LEVEsQUE c. schlumberger cambridge Research Limited Cambridge CB3 OEL UK schlumberger Beijing geoscience center Beijing 100084 China schlumberger-EMI Richmond California 94804 USA schlumberger Middle East s. A. Abu Dhabi UAE

In this paper, we describe some recent imaging technologies developed by schlumberger for oilfield downhole mul- tiphase flow production logging (PL) and cross-well electromagnetic (EM) survey applications. Floscan Imager (FsITM) has been introduced as a 3-phase oil/gas/water flow PL tool for deviated and horizontal wells. FsI sensors can map fluid velocity and holdup profiles along a vertical diameter of the wellbore at every survey depth, enabling a robust estimate of the individual phase flow rates in complex flow regimes. The cross-well EM survey is based on cross-borehole induction logging technique and provides resistivity distribution at a reservoir scale. It is a useful tool for reservoir management and is most effective in dynamic fields where fluid saturations are variable in time and space. The tool can be used to identify (water or steam) flooded and bypassed regions. By monitoring changes in the resistivity spatial distribution with time, cross-well EM survey is very effective at mapping inter-well temperature and structure. some field examples are shown for both Floscan Imager PL tool and cross-well resistivity imaging survey.

关键词： Oilfield Production logging (PL) Multiphase flow Imaging Tomography cross-well resistivity

NamINg scHEME FOR HADRONs

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chinese Physics c 2016年第10期40卷 130-131页

作者： M. Roos c.g. Wohl University of Finland LBNL

8.1. Introduction We introduced in the 1986 edition [1] a new naming scheme for the hadrons. changes from older terminology affected mainly the heavier mesons made of the light （u, d, and s） quarks. Old and new nam.s were listed alongside until 1994. Nam.s also change from edition to edition because some characteristic like mass or spin changes. The summary Tables give both the new and old nam.s whenever a change occurred.

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