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Beta-7 integrin controls enterocyte migration in the small intestine

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World Journal of Gastroenterology 2015年第6期21卷 1759-1764页

作者： elke Kaemmerer Paula Kuhn Ursula Schneider Thomas Clahsen Min Kyung Jeon Christina Klaus Julia Andruszkow Michael Hrer Sabine Ernst Angela Schippers Norbert Wagner Nikolaus Gassler Institute of Pathology RWTH Aachen University Department of Pediatrics RWTH Aachen University Department of Medical Statistics RWTH Aachen University

AIM:To hypothesize that beta-7 integrin affects cellularmigration of both,lymphocytes and ***:The nucleoside analog Brd U was ip injected in beta-7-deficient mice(C57BL/6-Itgbtmlcgn/J)of male gender and age-matched male C57BL/J J mice(wild type)4,20,or 40 h before *** total small intestine was isolated,dissected,and used for morphometrical *** U-positive epithelial cells were numbered in at least 15 hemi-crypts per duodenum,jejunum,and ileum of each *** outer most Brd U-positive cell(cellmax)was determined per hemi-crypt,numerically documented,and statistically ***:Integrins containing the beta-7-chain were exclusively expressed on *** the small intestinal mucosa of beta-7 integrin-deficient mice the number of intraepithelial lymphocytes was drastically ***,the Peyer’s patches of beta-7integrin-deficient mice appeared *** beta-7integrin-deficient mice the location of cellmax was found in a higher position than it was the case for the *** difference was already detected at 4 h after Brd U application,but significantly increased with time(40 h after Brd U injection)in all small intestinal segments investigated,i.e.,duodenum,jejunum,and *** of small intestinal enterocytes was different between the experimental groups measured by cellmax ***:The E-cadherin beta-7 integrin pathway probably controls migration of enterocytes within the small intestinal surface lining epithelial layer.

关键词： Barrier function Cell migration Inflammatory bowel

Impact of Transport Network Changes on Tourism in Protected Areas: A Case Study of Ayubia National Park, Pakistan

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Journal of Transportation Technologies 2020年第4期10卷 325-350页

作者： Muhammad Shaker Muhammad Adnan elke Hermans Ansar Yasar Geert Wets UHasselt - Universiteit Hasselt Transportation Research Institute (IMOB) Diepenbeek Belgium

The inflow caused by tourists in peak seasons exerts an uncontrollable pressure on the existing infrastructure. The Ayubia National Park in Pakistan faces traffic delays and capacity restraints on the connecting roads in peak season. The study focuses on the formulation of critical strategies by deploying amendments in the transport network. The methodology contains three parts: 1) a questionnaire was designed to inquire about several variables from the visitors;2) the second part was traffic count data collection and analysis. Based on the response collected, the impact of multiple strategies on the network was analyzed using TransCad;3) in the third part, the results obtained were shared with experts to gain their valuable opinions. It was observed that the time of the day based access restriction to heavy vehicles could lead to dropping the Volume to capacity ratio from 1.7 to 1.2. However, the experts were also of the view that network changes can enhance and improve the visitors’ experience.

关键词： Transport Management National Park Tourism Strategies Visitors

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复合技术制备锂蓄电池相关材料

电源技术 2003年第B5期27卷 260-265页

作者：吴宇平 R.elke H.RUDOLF 工业大学化学学院电化学系 chenmitz德国09107

随着锂蓄电池技术的不断发展,更多的方法已应用于锂蓄电池电极材料及相关辅助材料的制备,复合技术是其中提高材料的性能和(或)降低成本的效方法之一。综述了最近几年来复合技术在制备锂蓄电池辅助材料方面的进展。这些辅助材料包括聚合... 详细信息

随着锂蓄电池技术的不断发展,更多的方法已应用于锂蓄电池电极材料及相关辅助材料的制备,复合技术是其中提高材料的性能和(或)降低成本的效方法之一。综述了最近几年来复合技术在制备锂蓄电池辅助材料方面的进展。这些辅助材料包括聚合物电解质、无机电解质、隔膜材料和正温度系数端子。其中聚合物电解质的复合包括加入无机填料和将无机基体与有机基体形成复合物,无机电解质的复合包括合成晶体电解质、玻璃态电解质、熔融盐电解质和聚合物盐中电解质。所得复合材料的性能均较单一材料的性能有明显提高,特别是晶体电解质,室温电导率可达2.17×10-3S/cm,可与非水液体电解质相媲美,而且具有良好的电化学和化学稳定性,可用于高压锂蓄电池。随着复合技术的不断发展,真正意义上的固态锂蓄电池的诞生为期不会太远,而且安全性能将会得到明显提高。

关键词：锂蓄电池复合技术电极材料聚合物电解质辅助材料

超临界流体染色技术的过去、现在和将来(一)

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印染 2003年第3期29卷 42-45页

作者： elke Bach Ernst Cleve Eckhard Schollmeyer 德国西北纺织研究中心纺织整理工程研究部德国西北纺织研究中心

介绍了超临界CO2 染色技术在世界范围的发展过程及其优于水染色的特点。阐述了超临界CO2 对纤维性能的影响 ,诸如润滑效果、CO2 吸附、结晶、收缩和热机械性能 ,超临界CO2 对纤维的玻璃化温度和有效温度以及对纤维损伤的影响。另一重要... 详细信息

介绍了超临界CO2 染色技术在世界范围的发展过程及其优于水染色的特点。阐述了超临界CO2 对纤维性能的影响 ,诸如润滑效果、CO2 吸附、结晶、收缩和热机械性能 ,超临界CO2 对纤维的玻璃化温度和有效温度以及对纤维损伤的影响。另一重要问题是在超临界CO2 中纤维与染料之间的平衡分布和影响染料溶解性的参数。文中给出了涤纶纤维的染色步骤、设备和最佳工艺参数 ,然而天然纤维的染色仍是一个问题。通过浸渍溶胀剂和交联剂 ,或在染色前对纤维改性、添加极性共溶剂 ,可以提高分散染料的染色性 ,所有这些方法增加了工艺步骤和设备清洗 ,若使用有机溶剂则将大大提高机器成本 ,采用活性分散染料可以避免这种情况。含乙烯砜基团的染料主要适宜于羊毛和聚酰胺纤维的超临界CO2染色 ,而对于纤维素纤维迄今尚未开发可行的解决方法。预计在不久的将来建造工业化规模的染色设备 ,努力实现超临界CO2 染色技术的经济效益。

关键词：超临界流体染色技术纤维染料工艺过程设备技术发展

Near-infrared fluorescence guided esophageal reconstructive surgery: A systematic review

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World Journal of Gastrointestinal Oncology 2019年第3期11卷 250-263页

作者： elke Van Daele Yves Van Nieuwenhove Wim Ceelen Christian Vanhove Bart P Braeckman Anne Hoorens Jurgen Van Limmen Oswald Varin Dirk Van de Putte Wouter Willaert Piet Pattyn Department of Gastrointestinal Surgery Ghent University Hospital/Ghent University Department of Electronics and information systems Ghent University Department of Biology Ghent University Department of Pathology Ghent University Hospital/Ghent University Department of Anaesthesiology Ghent University Hospital/ Ghent University

BACKGROUND After an esophagectomy, the stomach is most commonly used to restore continuity of the upper gastrointestinal tract. These esophago-gastric anastomoses are prone to serious complications such as leakage associated with high morbidity and mortality. Graft perfusion is considered to be an important predictor for anastomotic integrity. Based on the current literature we believe Indocyanine green fluorescence angiography(ICGA) is an easy assessment tool for gastric tube(GT) perfusion, and it might predict anastomotic leakage(AL).AIM To evaluate feasibility and effectiveness of ICGA in GT perfusion assessment and as a predictor of *** This study was designed according to the PRISMA guidelines and registered in the PROSPERO database. PubMed and EMBASE were independently searched by 2 reviewers for studies presenting data on intraoperative ICGA GT perfusion assessment during esophago-gastric reconstruction after *** outcomes such as feasibility, complications, intraoperative surgical changes based on ICGA findings, quantification attempts, anatomical data and the impact of ICGA on postoperative anastomotic complications, were collected by 2 independent researchers. The quality of the included articles was assessed based on the Methodological Index for Non-Randomized Studies. The 19 included studies presented data on 1192 esophagectomy patients, in 758 patients ICGA was used perioperative to guide esophageal *** The 19 included studies for qualitative analyses all described ICGA as a safe and easy method to evaluate gastric graft perfusion. AL occurred in 13.8% of the entire cohort, 10% in the ICG guided group and 20.6% in the control group(P <0.001). When poorly perfused cases are excluded from the analyses, the difference in AL was even larger(AL well-perfused group 6.3% vs control group 20.5%, P <0.001). The AL rate in the group with an altered surgical plan based on the ICG image was 6.5%, similar to the well perfu

关键词： Indocyanine green Angiography Fluorescence Esophagectomy Anastomotic leak Near-infrared spectroscopy Esophageal neoplasms Esophageal cancer

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纳米技术在锂二次电池中的应用

电池 2002年第6期32卷 350-353页

作者：吴宇平 Rahm elke Holze Rudolf Department of Electrochemistry Institute of Chemistry Chemnitz University of Technologies

对近几年来纳米技术在锂二次电池中的应用进行了综述。所用纳米技术包括溶胶凝胶法、模板法、碳棒电弧法和机械研磨法等,制备的锂二次电池纳米材料包括正极、负极和其它材料。纳米正极材料包括氧化钴锂、氧化镍锂、氧化锰锂和钒的氧化... 详细信息

对近几年来纳米技术在锂二次电池中的应用进行了综述。所用纳米技术包括溶胶凝胶法、模板法、碳棒电弧法和机械研磨法等,制备的锂二次电池纳米材料包括正极、负极和其它材料。纳米正极材料包括氧化钴锂、氧化镍锂、氧化锰锂和钒的氧化物等,纳米负极材料包括碳材料、富勒烯、碳纳米管、氧化锡和金属负极材料等,其它纳米材料包括聚合物电解质和导电剂。这些纳米材料的电化学性能较一般方法制备的材料有明显的提高,但是目前在锂二次电池领域对纳米技术的理论研究还有待于深入。随着纳米技术的不断发展,微型锂二次电池的诞生为期不远。

关键词：纳米技术锂二次电池应用纳米材料正极材料负极材料蓄电池

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非经典法制备锂离子蓄电池电极材料

电源技术 2003年第1期27卷 45-49页

作者：吴宇平 R.elke H.RUDOLF Chemnitz工业大学化学学院电化学系 chemnitz德国09107

随着其它技术的发展,锂离子蓄电池电极材料的制备技术亦得相应的发展。综述了近几年来一些非经典的制备方法,如机械化学法、溶液氧化还原法、离子交换法、水热法、模板法、炭棒电弧放电法、脉冲激光沉积法、等离子提升化学气相沉积法和... 详细信息

随着其它技术的发展,锂离子蓄电池电极材料的制备技术亦得相应的发展。综述了近几年来一些非经典的制备方法,如机械化学法、溶液氧化还原法、离子交换法、水热法、模板法、炭棒电弧放电法、脉冲激光沉积法、等离子提升化学气相沉积法和射频磁旋喷射法等。这些方法有的简单、方便易行;有的能降低反应温度,容易得到单一相结构;有的方法设计独特,能制备纳米材料,电化学性能非常优良。这些非经典技术除了降低成本、提高电化学性能外,还将推动锂离子蓄电池向两极化发展:大型化和微型化,从而推动相应应用技术的发展,如电动汽车和先进的微型军事技术。

关键词：非经典法制备锂离子蓄电池电极材料

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复合技术制备锂二次电池电极材料

电池 2003年第1期33卷 47-50页

作者：吴宇平 Rahm elke Holze Rudolf Department of Electrochemistry Institute of ChemistryChemnitz University of Technology

复合技术是进一步提高材料的物理化学性能和/或降低成本的有效方法之一,早就应用于锂二次电池中。综述了最近几年来复合技术在制备锂二次电池电极材料方面的进展。这些电极材料包括负极材料如碳基负极、锡基氧化物负极和新型的合金负极... 详细信息

复合技术是进一步提高材料的物理化学性能和/或降低成本的有效方法之一,早就应用于锂二次电池中。综述了最近几年来复合技术在制备锂二次电池电极材料方面的进展。这些电极材料包括负极材料如碳基负极、锡基氧化物负极和新型的合金负极、以及无机和有机正极材料。复合的方法包括包覆、混合、沉积等。通过复合,提高了天然石墨的循环性能,降低了无定形碳在第1次循环的不可逆容量并改进了循环性能,改善了合金负极材料的循环寿命,明显提高了无机正极材料的高温性能及循环性能,并使有机正极材料的循环性能达到可实用化的水平。随着复合技术的不断发展,一些新的电极材料将不断诞生,其它类型锂二次电池的商品化将为期不远。

关键词：复合技术制备锂二次电池电极材料碱性蓄电池

Postural spinal balance defined by net intersegmental moments: Results of a biomechanical approach and experimental errors measurement

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World Journal of Orthopedics 2015年第11期6卷 983-990页

作者： Benjamin Blondel elke Viehweger Bertrand Moal Patrick Tropiano Jean-Luc Jouve Virginie Lafage Raphael Dumas Stéphane Fuentes Gérard Bollini Vincent Pomero Laboratoire d’analyse du mouvement Spine UnitUniversité Aix-Marseille Ecole Doctorale 463 Sciences du Mouvement HumainUniversité Aix-Marseille Department of Spine Surgery Hospital for Joint DiseasesNew-York University Université de Lyon IFSTTAR LBMC Université Lyon 1 LBMC

AIM: To describe initial results and experimental error measurement of a protocol analyzing Human posture through sagittal intersegmental moments. METHODS: Postural analysis has been recently improved by development of three-dimensional radiographic imaging systems. However, in various situations such as global sagittal anterior malalignment interpretation of radiographs may not represent the real alignment of the subject. The aim of this study was to present initial results of a 3D biomechanical protocol. This protocol isobtained in a free standing position and characterizes postural balance by measurement of sagittal intersegmental net moments. After elaboration of a specific marker-set, 4 successive recordings were done on two volunteers by three different operators during three sessions in order to evaluate the experimental error measurement. A supplementary acquisition in a "radiographic" posture was also obtained. Once the data acquired, joint center, length, anatomical frame and the center of mass of each body segment was calculated and a mass affected. Sagittal net intersegmental moments were computed in an ascending manner from ground reaction forces at the ankles, knees, hips and the lumbosacral and thoraco-lumbar spinal junctions. Cervicothoracic net intersegmental moment was calculated in a descending ***: Based on average recordings, clinical interpretation of net intersegmental moments(in N.m) showed a dorsal flexion on the ankles(8.6 N.m), a flexion on the knees(7.5 N.m) and an extension on the hips(8.5 N.m). On the spinal junctions, it was flexion moments: 0.34 N.m on the cervico-thoracic; 6.7 N.m on the thoraco-lumbar and 0.65 N.m on the lumbo-sacral. Evaluation of experimental error measurement showed a small inter-trial error(intrinsic variability), with higher inter-session and inter-therapist errors but without important variation between them. For one volunteer the "radiographic" posture was associated to significant changes compared

关键词： Posture Sagittal alignement Biomechanical evaluation Intersegmental net moments