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Application of dynamic image analysis to the optical characterisation of fibrous bulk material

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Particuology 2024年第7期90卷 51-60页

作者： Johannes Lunewski eberhard Schmidt Institute of Particle Technology University of WuppertalGermany

Dynamic image analysis provides an automated evaluation method to determine the size and shape of multiple particles. This method represents a common application for ordinary bulk material. The latest draft of ISO 13322–2:2021 describes the state of the art, but lacks instructions for handling fibrous bulk material. Interlocking fibres complicate the measurement conditions and require a disentanglement of fibrous samples during a pre-dispersion step. A further error source includes the fibre orientation inside the measurement zone of the device. If the thresholding algorithm fails to differentiate between the fibre projection area and the background, a subsequent image optimisation solves the problem. This article addresses the mentioned problems by analysing cotton cellulose and polyacrylonitrile fibres. Besides the execution of a pre-dispersion step, the experiments compare the discrepancies between dry and wet dispersion. Here, the software packages PAQXOS and ImageJ perform the image evaluation. In this case, the wet dispersion setup with a subsequent image evaluation by ImageJ provides comprehensible results.

关键词： Bootstrap method Dynamic image analysis Fibre diameter Fibre length distribution Natural fibres Synthetic fibres

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用荧光原位杂交技术显示染色体易位(英文)

第二军医大学学报 2000年第9期21卷 853-856,F003页

作者：朱冠山 Oliver Bartsch 万谟彬 Gabriele Gillessen-Kaesbach eberhard passarge 上海长海医院 200433 德累斯顿科技大学临床遗传学研究所埃森大学人类遗传学研究所

目的 :应用荧光原位杂交技术 (fluorescence in situ hybridization,FISH)对 G显带提示有染色体易位的病例进行分析 ,阐明易位本质。方法 :以定位于待研究染色体区段的酵母人工染色体 (yeast artificialchrom osom e,YAC)作为 DNA来源 ... 详细信息

目的 :应用荧光原位杂交技术 (fluorescence in situ hybridization,FISH)对 G显带提示有染色体易位的病例进行分析 ,阐明易位本质。方法 :以定位于待研究染色体区段的酵母人工染色体 (yeast artificialchrom osom e,YAC)作为 DNA来源 ,采用 DOP- PCR(degenerate oligonucleotide- primed,PCR)方法制备荧光标记的位点特异性探针 ,进行染色体原位杂交。结果 :两例经 G显带未能明确显示的染色体结构异常 ,经 FISH证实 ,一例为发生于 11号染色体与 13号染色体之间的平衡易位 ;另一例为发生于 6号染色体与 X染色体之间的不平衡易位。结论 :FISH技术以其高度的灵敏性及特异性 ,成为常规染色体显带技术的一个重要补充 ,特别适用于对微小染色体结构重排以及染色体片段起源的阐明。

关键词：染色体结构异常荧光原位杂交 YAC DOP-PCR

用FISH技术分析一例表型异常的染色体平衡易位

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肝脏 2001年第S1期6卷 98-页

作者：朱冠山 Oliver Bartsch 万谟彬 Gabriele Gillessen-Kaesbach eberhard passarge 上海第二军医大学附属长海医院 Institut fur Klinische Genetik TU DresdenUniversitatsklinikumFescherstrasse7401307 DresdenGermany Institut fur Humangenetik Universitatsklinikum EssenHufelandstrasse5545122 EssenGermany Institut

Letter of thanks for IJMSD's JCR debut in 2024

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International Journal of Mechanical System Dynamics 2024年第3期4卷 257-257页

作者： Xiaoting Rui Marco Amabili Peter eberhard Yonggang Huang National Key Laboratory of Complex Multibody System Dynamics Nanjing University of Science and TechnologyNanjingChina McGill University MontrealCanada University of Stuttgart StuttgartGermany Northwestern University EvanstonUSA

Dear Readers,Authors,Reviewers,Editorial Board Members,Editorial Office Members,We are pleased and honored to inform you that,according to the 2024 Journal Citation Reports(JCR)from Clarivate released on June 20,2024,the International Journal of Mechanical System Dynamics(IJMSD)received its first Journal Impact Factor of 3.4(2023).IJMSD ranks 42nd out of 180 journals in the Engineering,Mechanical category(Q1,top 23.1%),and 39th out of 170 journals in the Mechanics category(Q1,top 22.6%).

关键词： category Editorial thanks

Modelling of particle layer detachment—Role of transient kinetic effects

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Particuology 2009年第1期7卷 45-51页

作者： eberhard Schmidt Faculty D-Safety Engineering/Environmental Protection University of WuppertalBuilding FFRainer-Gruenter-StrasseD-42119 WuppertalGermany

Particle layers tend to build up on wails in many filtration and separation processes, calling for periodic removal in order to keep the apparatus running. Important factors are the adhesion of the layer on the substrate and the cohesion of the particles in the layer. Models describing such layer detachment generally assume constant and homogeneous conditions for the forces acting on the layer. But in reality detachment is extremely non-stationary concerning place and time, primarily due to changing conditions of the detaching forces on the one hand and changes in the particle layer morphology on the other. This paper describes a model and a simulation based on this model considering such transient kinetic effects, for which some computing results are presented and discussed.

关键词： Adhesive forces Filter cleanability Dust cake discharge Patchy cleaning

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Nucleon excitations

Chinese Physics C 2010年第9期34卷 1241-1246页

作者： eberhard Klempt Helmholtz-Institut für Strahlen- und Kernphysik der Universitt Bonn Nuβallee 14-16

The mass pattern of nucleon and Δ resonances is compared with predictions based on quark models,the Skyrme model,AdS/QCD,and the conjecture of chiral symmetry restoration.

关键词： baryon resonances AdS/QCD quark models chiral symmetry

Quantification of particle separation using electrostatically charged spray mist in a dust chamber

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Particuology 2021年第5期19卷 92-98页

作者： Marcel Zillgitt eberhard Schmidt Institute of Particle Technology Rainer Gruenter StraBeBuilding FFCampusFreudenbergBergische Universitat Wuppertal42119 WuppertalGermany

In order to improve the efficiency of reducing fine dust emissions from diffuse sources,the commonly used water mist can be electrostatically ***,the attraction between particles and droplets increases due to electrostatic field *** the experimental investigations carried out,an electrostatic two-fluid nozzle was used to generate a charged spray mist according to the principle of charging by *** a chamber,dispersed dust was precipitated with the spray mist,while detecting the laser light *** means of comparative measurements it could be shown that faster sedimentation and separation takes place through electrostatic *** variations regarding the use of compressed air and water were investigated and the sedimentation time of the particle-droplet mixture in the chamber was shown.A size distribution was then calculated from the laser light attenuation,which shows that the proportion of small particles decreases with spray ***,the influence of the polarity of droplets and solid particles on the reduction measure was determined.

关键词： Dust separation Spray mist Electrostatic Dust chamber Laser light attenuation Charging by induction

Adaptive nonlinear model predictive control design of a flexible-link manipulator with uncertain parameters

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Acta Mechanica Sinica 2017年第3期33卷 529-542页

作者： Fabian Schnelle Peter eberhard Institute of Engineering and Computational Mechanics University of Stuttgart

This paper presents a novel adaptive nonlinear model predictive control design for trajectory tracking of flexible-link manipulators consisting of feedback linearization, linear model predictive control, and unscented Kalman filtering. Reducing the nonlinear system to a linear system by feedback linearization simplifies the optimization problem of the model predictive controller significantly, which, however, is no longer linear in the presence of parameter uncertainties and can potentially lead to an undesired dynamical behaviour. An unscented Kalman filter is used to approximate the dynamics of the prediction model by an online parameter estimation, which leads to an adaptation of the optimization problem in each time step and thus to a better prediction and an improved input action. Finally, a detailed fuzzy-arithmetic analysis is performed in order to quantify the effect of the uncertainties on the control structure and to derive robustness assessments. The control structure is applied to a serial manipulator with two flexible links containing uncertain model parameters and acting in three-dimensional space.

关键词： Model predictive control Feedback linearization Unscented Kalman filter Flexible-link manipulator Fuzzy-arithmetical analysis

Study of tree shrew biology and models: A booming and prosperous field for biomedical research

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Zoological Research 2024年第4期45卷 877-909页

作者： Yong-Gang Yao Li Lu Rong-Jun Ni Rui Bi Ceshi Chen Jia-Qi Chen eberhard Fuchs Marina Gorbatyuk Hao Lei Hongli Li Chunyu Liu Long-Bao Lv Kyoko Tsukiyama-Kohara Michinori Kohara Claudia Perez-Cruz Gregor Rainer Bao-Ci Shan Fang Shen An-Zhou Tang Jing Wang Wei Xia Xueshan Xia Ling Xu Dandan Yu Feng Zhang Ping Zheng Yong-Tang Zheng Jumin Zhou Jiang-Ning Zhou Key Laboratory of Genetic Evolution and Animal Models Yunnan Key Laboratory of Animal Models and Human Disease MechanismsKunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650204China National Research Facility for Phenotypic&Genetic Analysis of Model Animals(Primate Facility) and National Resource Center for Non-Human PrimatesKunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650107China KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650204China Kunming College of Life Science University of Chinese Academy of SciencesKunmingYunnan 650204China Mental Health Center and Psychiatric Laboratory West China HospitalSichuan UniversityChengduSichuan 610041China Sichuan Clinical Medical Research Center for Mental Disorders ChengduSichuan 610044China German Primate Center Leibniz Institute of Primate ResearchGöttingen 37077Germany Department of Optometry and Vision Science School of OptometryUniversity of Alabama at BirminghamBirminghamAL 35294USA State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhanHubei 430071China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhanHubei 430074China Soong Ching Ling Institute of Maternity and Child Health International Peace Maternity and Child Health HospitalShanghai Jiao Tong University School of MedicineShanghai 200030China Transboundary Animal Diseases Center Joint Faculty of Veterinary MedicineKagoshima UniversityKagoshima-cityKagoshima 890-8580Japan Department of Microbiology and Cell Biology Tokyo Metropolitan Institute of Medical ScienceTokyo 156-8506Japan Pharmacology Department CinvestavMexico City 07360Mexico Department of Medicine University of FribourgFribourg CH-1700Switzerland Beijing Engineering Research Center of Radiog

The tree shrew(Tupaia belangeri)has long been proposed as a suitable alternative to non-human primates(NHPs)in biomedical and laboratory research due to its close evolutionary relationship with *** recent years,significant advances have facilitated tree shrew studies,including the determination of the tree shrew genome,genetic manipulation using spermatogonial stem cells,viral vector-mediated gene delivery,and mapping of the tree shrew brain ***,the limited availability of tree shrews globally remains a substantial challenge in the ***,determining the key questions best answered using tree shrews constitutes another *** shrew models have historically been used to study hepatitis B virus(HBV)and hepatitis C virus(HCV)infection,myopia,and psychosocial stress-induced depression,with more recent studies focusing on developing animal models for infectious and neurodegenerative *** these efforts,the impact of tree shrew models has not yet matched that of rodent or NHP models in biomedical *** review summarizes the prominent advancements in tree shrew research and reflects on the key biological questions addressed using this *** emphasize that intensive dedication and robust international collaboration are essential for achieving breakthroughs in tree shrew *** use of tree shrews as a unique resource is expected to gain considerable attention with the application of advanced techniques and the development of viable animal models,meeting the increasing demands of life science and biomedical research.

关键词： Tree shrew Animal model Neurodegenerative diseases Infectious diseases Neuroscience Phenome