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EVA NEXUS-Phaco performance study

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International Journal of Ophthalmology(English edition) 2024年第8期17卷 1447-1452页

作者： Lukas Feldhaus Andreas Ohlmann Stefan Kassumeh Siegfried Priglinger wolfgang Mayer Department of Ophthalmology University HospitalLudwig-Maximilians-University MunichMunich 80336Germany

AIM:To investigate a novel phacoemulsification system“EVA NEXUS”(D.O.R.C.,Dutch Opthalmic Research Center)in comparison to the existing system“EVA”in clinical *** to compare both phacoemulsification systems in terms of efficiency,safety and postoperative inflammatory ***:In this study standardized cataract surgery was performed on both eyes of the study participant,using the“EVA system”(control group,n=20)on one eye and the“EVA NEXUS system”(intervention group,n=20)on the other *** patients with cataract LOCS Grading 1-3 and no accompanying eye diseases were included in this study.A total of 20 patients were included in this study,with each treatment arm including 20 *** surgery a 0.1 mL aqueous humor sample was collected 1min after phacoemulsification to measure the total prostaglanin E2 concentrations using an enzyme-linked immunosorbent *** endothelial cell count,visual and refractive outcomes,and anterior chamber flare were evaluated preoperatively,and 1d,1wk,and 3mo ***:There were no statistically significant differences between both groups regarding intraoperative safety parameters including effective phacoemulsification time(P=0.904),balanced saline solution flow(P=0.701)and total surgery time(P=0.565).Postoperative prostaglandin E2 levels,anterior chamber flare as well as endothelial cell loss tended to be lower in the NEXUS-Group,however not being statistically significant(P=0.718;0.164;0.486).Both systems provided similar clinical outcomes,regarding best corrected visual acuity and refractive parameters,showing no statistically significant differences between both ***:Both systems show a high level of safety and efficency with similar results in terms of safety parameters including postoperative inflammatory activity and endothelial cell loss as well as visual and refractive *** statistically not significant,the EVA NEXUS system tends to cause less postoperative inflammatio

关键词： cataract surgery phacoemulsification fluidics instrument

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Going deep:Roots,carbon,and analyzing subsoil carbon dynamics

作者： wolfgang fischer Anne-Marie Le Plouhinec 刘海静

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Molecular Plant 2024年第1期17卷 1-3页

作者： Ezhilmathi Angela Joseph Fernando Michael Selvaraj Yusaku Uga wolfgang Busch Hunt Bowers Joe Tohme Alliance of Bioversity International and CIAT Km 17 Recta Cali-PalmiraAprtado Aereo 6713Cali 763537Colombia National Institute of Agrobiological Sciences(NIAS) TsukubaIbaraki 305-0856Japan Salk Institute for Biological Studies 10010 N Torrey Pines RoadLa JollaCA 92037USA Earth Optics Suite 840ArlingtonVA 22202USA

Agricultural practices currently contribute to the emission of approximately 10%–12%atmospheric greenhouse gasses,with tillage agriculture accelerating soil disruption and carbon dioxide ***,various options exist,such as converting new lands for agriculture,promoting healthier plant-based diets,adopting advanced management technologies,and minimizing food ***,these measures alone are insufficient to ensure environmental sustainability within planetary boundaries.

关键词： soil measures carbon

Towards engineering a portable platform for laparoscopic pre-training in virtual reality with haptic feedback

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虚拟现实与智能硬件（中英文） 2024年第2期6卷 83-99页

作者： Hans-Georg ENKLER wolfgang KUNERT Stefan PFEFFER Kai-Jonas BOCK Steffen AXT Jonas JOHANNINK Christoph REICH Furtwangen University 78120 FurtwangenGermany University Hospital and Faculty of Medicine Tuebingen 72076 TuebingenGermany

Background Laparoscopic surgery is a surgical technique in which special instruments are inserted through small incision holes inside the *** some time,efforts have been made to improve surgical pre training through practical exercises on abstracted and reduced *** The authors strive for a portable,easy to use and cost-effective Virtual Reality-based(VR)laparoscopic pre-training platform and therefore address the question of how such a system has to be designed to achieve the quality of today's gold standard using real tissue *** VR controllers are limited regarding haptic *** haptic feedback is necessary or at least beneficial for laparoscopic surgery training,the platform to be developed consists of a newly designed prototype laparoscopic VR controller with haptic feedback,a commercially available head-mounted display,a VR environment for simulating a laparoscopic surgery,and a training *** To take full advantage of benefits such as repeatability and cost-effectiveness of VR-based training,the system shall not require a tissue sample for haptic *** is currently calculated and visually displayed to the user in the VR *** the prototype controller,a first axis was provided with perceptible feedback for test *** of the prototype VR controllers can be combined to simulate a typical both-handed use case,e.g.,laparoscopic suturing.A Unity based VR prototype allows the execution of simple standard *** The first prototype enables full operation of a virtual laparoscopic instrument in *** addition,the simulation can compute simple interaction *** challenges lie in a realistic real-time tissue simulation and calculation of forces for the haptic *** weaknesses were identified in the first hardware prototype,which will be improved in subsequent *** degrees of freedom of the controller are to be provided with haptic *** make forces t

关键词： Laparoscopic surgery Training Virtual reality Controller Haptic feedback Kinesthetic skills

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内燃动车液力传动装置的发展水平

国外内燃机车 2007年第2期 32-36页

作者： wolfgang fischer[德] 韩才元（译）吴平（校）

最近几年在世界范围内,为各种不同的运用场合开发出多种内燃动车。经过长期考验和新开发的Voith液力传动装置对此作出了重大贡献。由于Voith液力传动装置具有高的运用完好率和低的运营成本,所以其在世界范围内处于主导地位。文中介绍了... 详细信息

最近几年在世界范围内,为各种不同的运用场合开发出多种内燃动车。经过长期考验和新开发的Voith液力传动装置对此作出了重大贡献。由于Voith液力传动装置具有高的运用完好率和低的运营成本,所以其在世界范围内处于主导地位。文中介绍了多循环圆液力传动装置的结构;提出了对安装在地板下的现代动车传动装置的要求;描述了当前最新型的3种动车液力传动装置的结构和工作原理。

关键词：内燃动车液力传动装置型谱结构优化设计维修发展水平

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双元制高等教育中理论与实践的相互结合对大学生能力素质发展的重要意义

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应用型高等教育研究 2017年第3期2卷 34-41页

作者： wolfgang Arens-fischer Katrin Dinkelborg Guido Grunwald 陈颖奥斯纳布吕克应用科学大学双元制专业研究所德国下萨克森州林根49808 奥斯纳布吕克应用科学大学

双元制高等教育主要有三种形式:含职业培训式、工学一体式和在职学习式。双元制专业共有的核心特征是,它们把课堂上的理论知识和在一家合作企业积累并扩展的实践经验进行相互结合。双元制专业的目标是使学生除了具备学术能力以外还形成... 详细信息

双元制高等教育主要有三种形式:含职业培训式、工学一体式和在职学习式。双元制专业共有的核心特征是,它们把课堂上的理论知识和在一家合作企业积累并扩展的实践经验进行相互结合。双元制专业的目标是使学生除了具备学术能力以外还形成在其他广泛领域工作的各种能力。对参与双元制专业的合作企业来说,培养双元制专业学生可以帮助企业实现工作岗位与组织发展。在此意义上,如何设计理论与实践的相互结合对能否实现双元制高等教育的理念来说至关重要。基于双元制专业大学生的能力素质模型,探讨构建考虑了在双元制专业中学术思维与行为能力和方法运用能力之间潜在的对立关系。

关键词：双元制高等教育能力素质发展组织发展理论结合实践能力素质模型

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Customized molecular tools to strengthen metabolic engineering of cyanobacteria

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Green Carbon 2024年第2期2卷 149-163页

作者： Stephan Klähn Franz Opel wolfgang R.Hess Department of Solar Materials Biotechnology Helmholtz Centre for Environmental Research–UFZLeipzig 04318Germany Genetics and Experimental Bioinformatics Albert-Ludwig University FreiburgFreiburg im Breisgau 79104Germany

Cyanobacteria are promising oxygenic phototrophs for the production of various *** their(photo)biotechnological exploitation,molecular tools are required,such as,for the introduction and expression of heterologous genes,or the modulation of enzyme activities or entire *** and strategies for the development of photosynthetic biomanufacturing technologies based on cyanobacteria have been extensively reviewed,as well as certain specialized aspects of their genetic ***,options for metabolic engineering of specific cyanobacterial cells are still less developed than those for other bacteria of biotechnological *** addition to the standard genetic toolbox for“classical”metabolic engineering,we emphasize certain aspects,including recently developed vector systems for the extrachromosomal maintenance of genes and approaches based on clustered regularly interspaced short palindromic repeats(CRISPR)*** highlight the development of custom molecular tools for specific strains or products,discuss the emerging use of small regulatory proteins that appear promising for advanced metabolic engineering approaches to promote specific product formation,and provide an overview of suitable online ***,we discuss the current trends in this field and indicate their potential,such as using suitable product sensors that enable systematic screening,and optimization approaches.

关键词： Metabolic engineering Cyanobacteria Synthetic plasmids Regulatory proteins Sensors

264米的美国魔鬼塔为什么全球登顶者不足百人？

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环球人文地理 2024年第13期 90-97页

作者：李嘉麟 Dan Gary GRP Imagery kellyvandellen Kyle samantha Jacob wolfgang flickr

在美国怀俄明州，有一座不足300米的“矮山”。别看它不高，论起攀登难度，就连珠峰登顶者都对它望洋兴叹。在美国怀俄明州东北部，有一座由火山岩和沉积岩构成的圆柱形岩石塔——魔鬼塔。它矗立在一望无际的草原上，显得格外突兀。谁...

在美国怀俄明州，有一座不足300米的“矮山”。别看它不高，论起攀登难度，就连珠峰登顶者都对它望洋兴叹。在美国怀俄明州东北部，有一座由火山岩和沉积岩构成的圆柱形岩石塔——魔鬼塔。它矗立在一望无际的草原上，显得格外突兀。谁能相信，近百年来，能够登上264米塔顶的登山者不足百人。那么，魔鬼塔是怎么形成的呢？这个问题，让好事者争论了一百多年。

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A Maintenance Service Improvement Approach Based on Queue Networks: Application

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Open Journal of Applied Sciences 2024年第2期14卷 425-440页

作者： Aslain Brisco Ngnassi Djami wolfgang Nzié Boukar Ousman Joseph Nkongho Anyi Ulrich Ngnassi Nguelcheu Department of Fundamental Sciences and Techniques of Engineer Chemical Engineering and Mineral Industries School University of Ngaoundere Ngaoundere Cameroon Laboratory of Mechanics Materials and Photonics National School of Agro-Industrial Sciences University of Ngaoundere Ngaoundere Cameroon Department of Electrical Engineering Energy and Automation National School of Agro-Industrial Sciences University of Ngaoundere Ngaoundere Cameroon Laboratory E3M Faculty of Industrial Engineering University of Douala Douala Cameroon Department of Physics Faculty of Science University of Ngaoundere Ngaoundere Cameroon

The quest to increase the performance of production systems that have become complex leads to the transfer to the maintenance function of the responsibility of guaranteeing the availability of such systems. Also, we will never stop saying that maintenance must integrate into all of the company’s initiatives, to affirm its role, which is to ensure greater availability and sustainability of the means of production. The objective of this paper is to evaluate the reliability and availability of a system without knowing the distribution law of the operating times. Among the methods for evaluating dependability criteria (Fault Trees, Petri Nets, etc.), we are interested in queues that have the advantage of taking into account functional dependencies, thus allowing a quantified optimization of maintenance. Indeed, queues make it possible to model parallel or sequential processes, implementing operations taking place at the same time or one after the other, meeting the needs of modeling production systems. The main result of this paper is the study of the influence of availability on the reliability of a multi-state production system.

关键词： Markov Chains Queues Availability Reliability Maintenance