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中国检验检测 1989年第3期 31-34页

作者： g.jost 邹炳易

一、引言对于固体散料的连续计量,重力式皮带秤已在工业中应用了多年,得到了承认。大约15年前,另一种固体散料计量系统进入了市场,它就是核子式皮带秤。二者的区别在于测量皮带负荷的方法。核子式皮带秤利用γ射线通过物料时被吸收的特

关键词：皮带秤子式直度皮带称核子秤散料物料重力式

对此双能量CT与动态增强CT及传统的单能量增强CT对瑞格非尼(Regorafenib)在临床前期肿瘤模型早期疗效的评估

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国际医学放射学杂志 2014年第5期 505-506页

作者： g.Knobloch g.jost A.Huppertz B.Hamm H.Pietsch 陈慧娟 Department of Radiology Charité–Universit tsmedizin BerlinCharité Campus VirchowAugustenburger Platz 113353 BerlinGermany

摘要目的对比双能量CT与动态对比增强CT和常规对比增强CT在评估临床前期瑞格非尼(regorafenib)早期治疗效果的潜在诊断价值。方法采用gS9L胶质瘤小鼠模型,

关键词：动态对比增强 Regorafenib 临床前期双能量格非 CT

钆对比剂向健康鼠脑脊液的渗透及其分布:一种进入脑组织的潜在途径

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国际医学放射学杂志 2017年第5期 606-607页

作者： g.jost T.Frenzel J.Lohrke D.C.Lenhard S.Naganawa H.Pietsch 华蓓 MR and CT Contrast Media Research Bayer Pharma AG

摘要目的有研究报道注射多种钆对比剂(gBCA)后,部分(并非全部)gBCA可使特定脑区非增强MRI上显示为高信号。本临床前实验系统性评估gBCA进入脑组织的一条

关键词：脑组织 CSF 对比剂健康鼠脑脊液

MDCT采用不同浓度对比剂(300、370、400mg碘)增强在个体间的比较

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国际医学放射学杂志 2010年第5期 496-497页

作者： F.F.Behrendt H.Pietsch g.jost M.A.Sieber S.Keil C.Plumbans 谭艳 Department of Diagnostic Radiology University Hospital RWTH Aachen University

关键词：对比剂 CT 个体间比较碘浓度用法与用量结果重复性

Dirac-harmonic maps with the trivial index

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Science China Mathematics 2024年

作者： Jürgen jost Linlin Sun Jingyong Zhu Max Planck Institute for Mathematics in the Sciences School of Mathematics and Statistics Guangxi Normal University School of Mathematics Sichuan University

For a homotopy class [u] of maps between a closed Riemannian manifold M and a general manifold N, we want to find a Dirac-harmonic map with the map component in the given homotopy class. Most known results require the index to be nontrivial. When the index is trivial, the few known results are all constructive and produce uncoupled solutions. In this paper, we define a new quantity. As a byproduct of proving the homotopy invariance of this new quantity, we find a new simple proof for the fact that all the Dirac-harmonic spheres in surfaces are uncoupled. More importantly, by using the homotopy invariance of this new quantity,we prove the existence of Dirac-harmonic maps from manifolds in the trivial index case. In particular, when the domain is a closed Riemann surface, we prove the short-time existence of the α-Dirac-harmonic map flow in the trivial index case. Together with the density of the minimal kernel, we get an existence result for Dirac-harmonic maps from closed Riemann surfaces to K¨ahler manifolds, which extends the previous result of the first and third authors. This establishes a general existence theory for Dirac-harmonic maps in the context of the trivial index.

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试验大鼠模型中的线性和大环类钆对比剂的长期排泄

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国际医学放射学杂志 2019年第2期42卷 236-236页

作者： g.jost T.Frenzel J.Boyken J.Lohrke V.Nischwitz H.Pietsch 郎也(译) 杜明珊(校) epartment of MR and CT Contrast Media Research BayerMuellerstr 178Berlin 13353Germany 不详

目的观察1年内多次给予含钆对比剂(gBCA)后大鼠脑MRI信号强度(SI)的长期变化过程及脑内钆的存在情况。材料与方法分别给予大鼠线性gBCA(钆双胺、钆喷酸葡胺、钆贝葡胺)和大环gBCA(钆布醇、钆特酸葡甲胺、钆特醇)或生理盐水。

关键词：对比剂激光消融 ICP MS 钆特酸葡甲胺钆贝葡胺钆布醇钆双胺钆特醇

Challenges and opportunities in the production of magnesium parts by directed energy deposition processes

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Journal of Magnesium and Alloys 2024年第5期12卷 1663-1686页

作者： gürel Cam Ali günen Iskenderun Technical University Faculty of Engineering and Natural SciencesDepartment of Mechanical Engineering31200 Iskenderun-HatayTurkey Iskenderun Technical University Faculty of Engineering and Natural SciencesDepartment of Metallurgy and Materials Engineering31200 Iskenderun-HatayTurkey

Mg-alloys have gained considerable attention in recent years for their outstanding properties such as lightweight,high specific strength,and corrosion resistance,making them attractive for applications in medical,aerospace,automotive,and other transport ***,their widespread application is hindered by their low formability at room temperature due to limited slip *** Mg-alloys have low mechanical properties due to the presence of casting defects such as porosity and anisotropy in addition to the high *** casting methods benefit from established process optimization techniques for these problems,additive manufacturing methods are increasingly replacing casting methods in Mg alloys as they provide more precise control over the microstructure and allow specific grain orientations,potentially enabling easier optimization of anisotropy properties in certain *** metal additive manufacturing(MAM)technology also results in some manufacturing defects such as inhomogeneous microstructural evolution and porosity and additively manufactured Mg alloy parts exhibit lower properties than the wrought parts,they in general exhibit superior properties than the cast ***,MAM is a promising technique to produce Mg alloy *** energy deposition processes,particularly wire arc directed energy deposition(WA-DED),have emerged as an advantageous additive manufacturing(AM)technique for metallic materials including magnesium alloys,offering advantages such as high deposition rates,improved material efficiency,and reduced production costs compared to subtractive ***,the inherent challenges associated with magnesium,such as its high reactivity and susceptibility to oxidation,pose unique hurdles in the application of this *** review paper delves into the progress made in the application of DED technology to Mg-alloys,its challenges,and ***,the predominant imperfections,notably inhomo

关键词： Additive manufacturing DED processes Arc-DED Wire arc additive manufacturing(WAAM) 3-D printing High deposition rate

Recent research in mechanical properties of geopolymer-based ultrahigh-performance concrete:A review

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Defence Technology（防务技术） 2024年第2期32卷 67-88页

作者： g.Murali Division of Research&Innovation Uttaranchal UniversityDehradun 248007India

Due to the growing need for sustainable and ultra-high-strength construction materials,scientists have created an innovative ultra-high-performance concrete called geopolymer based ultra-highperformance concrete(gUHPC).Besides,in the last few decades,there have been a lot of explosions and ballistic attacks around the world,which have killed many civilians and fighters in border *** this context,this article reviews the fresh state and mechanical properties of ***,the ingredients of gUHPC and fresh properties such as setting time and flowability are briefly ***,the review of compressive strength,flexure strength,tensile strength and modulus of elasticity of fibrous ***,the blast and projectile impact resistance performance was ***,the microstructural characteristics were reviewed using the scanning electron microscope and X-ray Powder *** review outcome reveals that the mechanical properties were increased when 30%silica fume was added to a higher dose of steel fibre to improve the microstructure of *** is hypothesized that the brittleness of gUHPC was mitigated by adding 1.5%steel fibre reinforcement,which played a role in the decrease of contact explosion cratering and *** the need for cement in gUHPC was a key factor in the review,indicating a promising potential for lowering carbon ***,gUHPC research is still in its early stages,so more study is required before its full potential can be utilized.

关键词： Mechanical properties Blast Projectile impact Fibre geopolymer Silica fume Alkaline activators

啮齿类动物应用钆对比剂后钆在皮肤长期滞留的研究

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国际医学放射学杂志 2009年第4期32卷 412-412页

作者： H.Pietsch P.Lengsfeld g.jost T.Frenzel J.Hütter M.A.Sieber 王萍 Bayer Schering Pharma Ag Contrast Media Research

一些文献提示含钆对比剂（gBCA）与一种罕见但严重的疾病——肾源性系统性纤维化（NSF）有潜在联系。本研究目的是确定大鼠注射gBCA后皮肤组织钆的清除时间。将目前市场应用的7种含钆对比剂以2．5mmol／kg的剂量连续5d注入Han—Wistar... 详细信息

一些文献提示含钆对比剂（gBCA）与一种罕见但严重的疾病——肾源性系统性纤维化（NSF）有潜在联系。本研究目的是确定大鼠注射gBCA后皮肤组织钆的清除时间。将目前市场应用的7种含钆对比剂以2．5mmol／kg的剂量连续5d注入Han—Wistar大鼠尾静脉中，于最后1次注射后1年内的不同时间点．取皮肤活检应用电感耦合等离子体质谱（ICP—MS）进行钆的浓度测定。皮肤内大部分注射的钆在2个月左右的时间内排除。

关键词：含钆对比剂钆存留肾源性系统性纤维化稳定性

多层CT评估心肌活力:兔模型中单体与双体对比剂的个体内比较

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国际医学放射学杂志 2009年第2期32卷 201-201页

作者： A.H.Mahnken g.jost P.Bruners M.Sieber P.R.Seidensticker R.W. günther 刘靖 Department of Diagnostic Radiology University HospitalRWTH Aachen University

为研究不同碘离子对比剂对心肌活力评估的影响，在6只兔上用外科手术建立了急性心肌梗死模型。45min内，以600mgI／kg体质量的对比剂重复进行心脏多层CT增强检查（64×0．6mm，80kV，680mAs）。动物随机应用碘普罗胺300和碘克沙醇320。... 详细信息

为研究不同碘离子对比剂对心肌活力评估的影响，在6只兔上用外科手术建立了急性心肌梗死模型。45min内，以600mgI／kg体质量的对比剂重复进行心脏多层CT增强检查（64×0．6mm，80kV，680mAs）。动物随机应用碘普罗胺300和碘克沙醇320。测量健康及梗死心肌的衰减值。计算心肌梗死大小，并与四唑硝基兰（nitroblue tetrazolium，NBT）染色的标本比较。

关键词： CT 多层CT 对比剂心脏心肌梗死