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2008北京国际生理科学学术大会

作者： SMITH I.C.H bergmann j Applied Biomedical Division King’s College LondonGuy’s CampusLondon SE1 1UL UK

＜正＞Muscle power is a major determinant of disability yet is surprisingly difficult to *** equipment such as isokinetic dynamometry or the Nottingham power rig is both expensive and large,limiting their use to specialist *** underutilised is miniaturised inertial units which allow 3D monitoring of limb *** we investigate the use of a single inertial unit to measure power produced during rapid rising from a seated position using a triaxial（which allows accurate setting of the forward axis）unit（MTx,Xsens Technologies, Holland,120Hz sampling of gyroscope data）.A novel ’StandUp’ test protocol was designed to use minimal equipment, requiring the subjects to rise from a chair at maximal speed whilst maintaining the lower legs vertical,arms folded and,to obviate upper-body contributions,leaning *** muscle power can then be calculated from the motion of centre of gravity estimated from a single inertial unit on the upper *** was measured,with local ethical approval,in 12 healthy subjects（age 18-28）.Power from upward movement peaked within 200 ms followed by a plateau when combined with a small late horizontal *** power was 24.3 W/kg（SE 1.6）at an angular speed of 147 deg/s（SE 5）compared to 20.5 W/kg（SE 1.6,single leg）when measured in the same subjects with a KinCom 500H dynamometer at 120 deg/s and 3.6 W/kg（SE 0.2,single leg）with the Nottingham power rig. The Stand Up test was also conducted with the subject holding a 2.5 kg,5 kg or 7.5 kg weight,*** up to about 10%of the body *** was no significant change in either the power or speed of the movement [power=（102±8）%,speed =（95±4）%control,n=10,+7.5 kg]suggesting that the procedure can provide a reliable power estimate for subjects with different body mass index.A single inertial unit in a Stand Up test can thus provide a portable,safe and quickly-conducted test of leg power *** provides measures which are repeatable and of similar size to the dyn

关键词： muscle power human Xsens

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An Accurate Cartesian Method for Incompressible Flows with Moving Boundaries

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Communications in Computational Physics 2014年第5期15卷 1266-1290页

作者： M.bergmann j.Hovnanian A.Iollo Inria F-33400 TalenceFranceUniv.BordeauxIMBUMR 5251F-33400 TalenceFranceCNRSIMBUMR 5251F-33400 TalenceFrance.

An accurate cartesian method is devised to simulate incompressible viscous flows past an arbitrary moving *** Navier-Stokes equations are spatially discretized onto a fixed Cartesian *** body is taken into account via the ghost-cell method and the so-called penalty method,resulting in second-order accuracy in *** accuracy and the efficiency of the solver are tested through two-dimensional reference *** show the versatility of this scheme we simulate a threedimensional self propelled jellyfish prototype.

关键词： Viscous incompressible flow immersed boundary method penalty method cartesian grid self-propelled jellyfish.

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Statistical analysis and concentration of iron ore using Longi LGS 500 WHIMS

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矿业科学技术学报：英文版 2016年第5期26卷 769-775页

作者： Makhula M.j. Falcon R.M.S. bergmann C.P. Bada S.O. Department of Mineral Processing Division Mintek Johannesburg 2125 South Africa School of Chemical and Metallurgical Engineering University of the Witwatersrand Johannesburg 2050 South Africa

A Longi LGS 500 wet high intensity magnetic separator(WHIMS) was used to concentrate a fine, low grade South African hematite ore. The ore was prepared into different size fractions and was subjected to changes in pulp density, magnetic field intensity and pulsation frequency which followed a 33 full factorial matrix. The concentrate mass yield and Fe grade were selected as the dependent responses to the changes. The analysis of variance(ANOVA) shows that the variables investigated are significant to the material's response to magnetic separation. This significance was in the order of magnetic field intensity followed by pulsation frequency and then pulp density. It was also noted that a single stage magnetic separation has a potential to upgrade a feed( 75 lm and 40% Fe) to a 55% Fe grade, as the pulsation frequency increases. In addition, the model predictions and actual data were in good agreement, reporting regression coefficients within acceptable ranges.

关键词： Magnetic separation Longi LGS 500 Hematite ANOVA

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Performance and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 TeV with the ATLAS detector

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Chinese Physics C 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott K. Abeling N.j. Abicht S.H. Abidi A. Aboulhorma H. Abramowicz H. Abreu Y. Abulaiti B.S. Acharya C. Adam Bourdarios L. Adamczyk S.V. Addepalli M.j. Addison j. Adelman A. Adiguzel T. Adye A.A. Affolder Y. Afik M.N. Agaras j. Agarwala A. Aggarwal C. Agheorghiesei A. Ahmad F. Ahmadov W.S. Ahmed S. Ahuja X. Ai G. Aielli A. Aikot M. Ait Tamlihat B. Aitbenchikh I. Aizenberg M. Akbiyik T.P.A. Åkesson A.V. Akimov D. Akiyama N.N. Akolkar K. Al Khoury G.L. Alberghi j. Albert P. Albicocco G.L. Albouy S. Alderweireldt M. Aleksa I.N. Aleksandrov C. Alexa T. Alexopoulos F. Alfonsi M. Algren M. Alhroob B. Ali H.M.j. Ali S. Ali S.W. Alibocus M. Aliev G. Alimonti W. Alkakhi C. Allaire B.M.M. Allbrooke j.F. Allen C.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso C. Alpigiani M. Alvarez Estevez A. Alvarez Fernandez M. Alves Cardoso M.G. Alviggi M. Aly Y. Amaral Coutinho A. Ambler C. Amelung M. Amerl C.G. Ames D. Amidei S.P. Amor Dos Santos K.R. Amos V. Ananiev C. Anastopoulos T. Andeen j.K. Anders S.Y. Andrean A. Andreazza S. Angelidakis A. Angerami A.V. Anisenkov A. Annovi C. Antel M.T. Anthony E. Antipov M. Antonelli F. Anulli M. Aoki T. Aoki j.A. Aparisi Pozo M.A. Aparo L. Aperio Bella C. Appelt A. Apyan N. Aranzabal S.j. Arbiol Val C. Arcangeletti A.T.H. Arce E. Arena j-F. Arguin S. Argyropoulos j.-H. Arling O. Arnaez H. Arnold G. Artoni H. Asada K. Asai S. Asai N.A. Asbah j. Assahsah K. Assamagan R. Astalos S. Atashi R.j. Atkin M. Atkinson H. Atmani P.A. Atmasiddha K. Augsten S. Auricchio A.D. Auriol V.A. Austrup G. Avolio K. Axiotis G. Azuelos D. Babal H. Bachacou K. Bachas A. Bachiu F. Backman A. Badea P. Bagnaia M. Bahmani A.j. Bailey V.R. Bailey j.T. Baines L. Baines O.K. Baker E. Bakos D. Bakshi Gupta V. Balakrishnan R. Balasubramanian E.M. Baldin P. Balek E. Ballabene F. Balli L.M. Baltes W.K. Balunas j. Balz E. Banas M. Bandieramonte A. Bandyopadhyay S. Bansal L. Barak M. Barakat E.L. Barberio D. Barberis M. Barbero M.Z. Barel K.N. Barends T. Barillari M-S. Barisits T. Barklow P. Baron D.A. Baron Mo The ATLAS Collaboration

The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron Collider,as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration,using √s=13 TeV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the ATLAS *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points.

关键词： ATLAS jET QUARK GLUON TAGGING

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Enhanced π-π Interactions Between a C_(60) Fullerene and a Buckle Bend on a Double-Walled Carbon Nanotube

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Nano Research 2010年第2期3卷 92-97页

作者： Sandeep Gorantla Stanislav Avdoshenko Felix Börrnert Alicja Bachmatiuk Maria Dimitrakopoulou Franziska Schäffel Ronny Schönfelder jürgen Thomas Thomas Gemming jamie HWarner Gianaurelio Cuniberti jürgen Eckert Bernd Büchner Mark H.Rümmeli IFW Dresden P.O.Box 270116D-01171 DresdenGermany Institute for Materials Science and Max bergmann Center of Biomaterials Dresden University of TechnologyDresden 01062Germany Department of Materials University of OxfordParks Rd.Oxford OX13PHUnited Kingdom

In situ low-voltage aberration corrected transmission electron microscopy(TEM)observations of the dynamic entrapment of a C_(60) molecule in the saddle of a bent double-walled carbon nanotube is *** fullerene interaction is non-covalent,suggesting that enhancedπ-πinteractions(van der Waals forces)are *** molecular dynamics calculations confirm that the increased interaction area associated with a buckle is sufficient to trap a ***,they show hopping behavior in agreement with our experimental *** findings further our understanding of carbon nanostructure interactions,which are important in the rapidly developing field of low-voltage aberration corrected TEM and nano-carbon device fabrication.

关键词： Carbon nanotubes fullerenes low-voltage transmission electron microscopy molecule trap

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Sodium alendronate loaded poly(L-lactideco-glycolide)microparticles immobilized on ceramic scaffolds for local treatment of bone defects

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Regenerative Biomaterials 2020年第3期7卷 293-302页

作者： Lucja Rumian Cornelia Wolf-Brandstetter Sina Roβler Katarzyna Reczynska Hanna Tiainen Havard j.Haugen Dieter Scharnweber Elzbieta Pamula Faculty of Materials Science and Ceramics Department of Biomaterials and CompositesAGH University of Science and TechnologyAl.A.Mickiewicza 30Krakow 30-059Poland Technische Universitat Dresden Institute of Materials ScienceMax Bergmann Center of BiomaterialsBudapester Str.27Dresden 01-069Germany Department of Biomaterials Institute for Clinical DentistryUniversity of OsloGeitmyrsveien 71BlindernP.O.Box 1109Oslo NO-0317Norway

Bone tissue regeneration in critical-size defects is possible after implantation of a 3D scaffold and can be additionally enhanced once the scaffold is enriched with drugs or other factors supporting bone remodelling and *** alendronate(Aln),a widely used anti-osteoporosis drug,exhibits strong inhibitory effect on bone resorption performed by ***,we propose a new approach for the treatment of bone defects in craniofacial region combining biocompatible titanium dioxide scaffolds and poly(L-lactide-co-glycolide)microparticles(MPs)loaded with *** MPs were effectively attached to the surface of the scaffolds’pore walls by human recombinant *** release from the scaffolds was characterized by initial burst(2466% of the drug released within first 24 h)followed by a sustained release phase(on average 5 mg of Aln released per day from Day 3 to Day 18).In vitro tests evidenced that Aln at concentrations of 5 and 2.5 mg/ml was not cytotoxic for MG-63 osteoblast-like cells(viability between 8166% and 9863% of control),but it prevented RANKL-induced formation of osteoclast-like cells from macrophages derived from peripheral blood mononuclear cells,as shown by reduced fusion capability and decreased tartrateresistant acid phosphatase 5b activity(5665% reduction in comparison to control after 8 days of culture).Results show that it is feasible to design the scaffolds providing required doses of Aln inhibiting osteoclastogenesis,reducing osteoclast activity,but not affecting osteoblast functions,which may be beneficial in the treatment of critical-size bone tissue defects.

关键词： ceramic scaffolds sodium alendronate osteoblasts osteoclastogenesis collagen critical-size defect poly(L-lactideco-glycolide) microparticles

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CT图像自动与人工层到体配准的比较研究

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国际医学放射学杂志 2010年第1期 91-91页

作者： L.Fruhwald j.Kettenbach M.Figl j.Hummel H.bergmann W.Birkfellner 何健 Center for Biomedical Engineering and Physics Medical University ViennaViennaAustria

将层到体自动配准算法与人工配准进行对照,评估该技术的临床实用性。回顾从一个下腹部诊断性CT检查中得到重组图像并由41个人进行人工配准,用算法对结果进行优化。进一步进行无人工初始化的单层到所有CT图像全自动配准。发现旋转和平移... 详细信息

将层到体自动配准算法与人工配准进行对照,评估该技术的临床实用性。回顾从一个下腹部诊断性CT检查中得到重组图像并由41个人进行人工配准,用算法对结果进行优化。进一步进行无人工初始化的单层到所有CT图像全自动配准。发现旋转和平移人工配准误差为(2.7±2.8)°和(4.0±2.5)mm。自动配

关键词：配准配准算法图像 CT

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现代人颅骨头面部表面积的纬度分布特点及其与温度的关系

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中国科学：地球科学 2014年第7期44卷 1844-1853页

作者：潘雷魏东吴秀杰中国科学院脊椎动物演化与人类起源重点实验室、中国科学院古脊椎动物与古人类研究所北京100044 Universite de Toulouse(Paul Sabatier) Toulouse 31400France 吉林大学边疆考古研究中心.长春130012

人类头面部形态特征具有区域性及人群间差异,在人类学的研究中被用作亲缘关系的证据.一般认为人类头面部的形态具有区域性分布特点,头面部的大小和形状与遗传和环境因素均有关,尤其受居住地的气温的影响,但学术界对遗传和环境因素对人... 详细信息

人类头面部形态特征具有区域性及人群间差异,在人类学的研究中被用作亲缘关系的证据.一般认为人类头面部的形态具有区域性分布特点,头面部的大小和形状与遗传和环境因素均有关,尤其受居住地的气温的影响,但学术界对遗传和环境因素对人类头面部体质特征的影响程度还不是很清楚,因缺少对性状来源的深入探讨,常把趋同特征用作亲缘关系的证据,得出的结论往往被质疑.本文以亚洲、非洲、欧洲、美洲和大洋洲18个考古遗址出土的295例现代人头骨为研究材料,利用3D激光扫描技术,获取脑颅的头盖部和面颅的颧骨部分的表面积,对不同纬度人群头面部大小的变化规律及与年均温度的相关性进行了分析.结果显示,人类头面部的形态特征具有适应性,现代人群头面部表面积在全球范围内有纬度性变化,也与当地温度有密切联系:头盖部的面积与纬度呈明显正相关,与温度呈明显负相关;颧骨面积和头颧指数(颧骨面积/头盖部面积)与温度呈明显负相关,与纬度没有显著的相关性.随着纬度的升高,头盖部面积明显增大;随着年均温度的升高,头盖部和颧骨的面积及头颧指数有显著减小的趋势.本文研究有助于区分同源特征与同功特征的问题,对人类体质适应性的研究具有启发作用.

关键词：全新世人群头面部表面积纬度温度相关性

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Morphogenesis and Regulation of bergmann Glial Processes During Purkinje Cell Dendritic Spine Ensheathment and Synaptogenesis

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神经损伤与功能重建 2008年第5期3卷 328-341页

作者： jOCELYN j.LIPPMAN TAMAR LORDKIPANIDZE MARGARET E.BUELL SUNG OK YOON ANNA DUNAEVSKY Department of Neuroscience Brown UniversityBox G-LNProvidenceRhode Island Center for Molecular Neurobiology Department of Molecular and Cellular BiochemistryOhio State UniversityColumbusOhio

星形胶质细胞在突触形成中发挥重要作用,但星形胶质细胞突起如何在发育过程中与突触结构相联系还不是很清楚。本文分析在小脑突触发生过程中bergmann胶质细胞(BG)突起生长的类型。本文发现在这个过程中,BG突起向外生长与树突棘增多的包... 详细信息

星形胶质细胞在突触形成中发挥重要作用,但星形胶质细胞突起如何在发育过程中与突触结构相联系还不是很清楚。本文分析在小脑突触发生过程中bergmann胶质细胞(BG)突起生长的类型。本文发现在这个过程中,BG突起向外生长与树突棘增多的包被作用相关。此外,双光子时间分辩显像显示BG突起是高度动态的,在棘包被过程中突起趋于稳定。虽然突触活力依赖于肌动蛋白的聚合作用,但细胞骨架调节器Rac1和RhoG的活动在胶质细胞突起的动力或密度上并未发挥作用,而是对于保持突起长度起关键性作用。本文扩展这个发现,探查突起形态和包被之间的关系,发现缩短的突起导致棘覆盖的减少。本文进一步发现在BG表达dn-Rac1和低水平突触包被的区域,显示突触数量的增加。这些分析提示BG突起如何生长并包围突触结构,阐明BG突起结构对突触包被适当发育的重要性,并提示包被在突触形成中的作用。

关键词： bergmann胶质细胞树突棘突触发生 Purkinje细胞小脑 Rac1

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颅内压监护的展望

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国外医学(神经病学神经外科学分册) 1982年第2期 74-76页

作者： Venes j 郑丰任

150年前Cooper报告用指尖直接轻压动物的脑子可引起心率减慢,重压可致昏迷。Von bergmann证实了颅内压(ICP)增高本身可以引起脉博与呼吸减慢。他提出当ICP升高达到与颈内动脉收缩压相等时,动物不可避免地会死亡。Wyhter用腰穿使结

关键词：脑室系统病人颅内高压血管运动动物 ICP 严重脑外伤

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