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Biobased materials for food packaging

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Journal of Bioresources and Bioproducts 2022年第1期7卷 1-13页

作者： Jiaxiu Wang Markus Euring kolja Ostendorf Kai Zhang Department of Wood Technology and Wood-based Composites Georg-August-University of GöttingenBüsgenweg 4D-37077 GöttingenGermany School of Life Sciences Anhui University230601 HefeiChina Anhui Key Laboratory of Modern Biomanufacturing 230601 HefeiChina

Consumers prefer foods that are healthier with high quality and *** packaging are de-manded to effectively extend the shelf-life,preserve the nutrients and decrease the microbial contamination during the transport and storage of *** the increasing concern on the envi-ronmental impacts caused by food packaging wastes,sustainable and green packaging are highly demanded to minimize the harmful effects of food packaging waste on the ***-based materials are derived from sustainable and renewable biomass,instead of finite *** applications of bio-based materials for food packaging are highlighted in this *** emphasis is placed on the categories of related biobased materials,their characteristics and ad-vantages for food packaging,as well as the strategies used to improve their *** a lot of trials have been done on biobased materials for food packaging,further attempts to im-prove their performances,understand the functioning mechanisms and develop greener methods for the production,processing and destiny of these bio-based materials are still highly needed for the future research.

关键词： Food packaging Nanomaterial Fiber Biobased material

Multilevel Preconditioners for the Interior Penalty Discontinuous Galerkin Method II-Quantitative Studies

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Communications in Computational Physics 2009年第2期5卷 296-325页

作者： kolja Brix Martin Campos Pinto Wolfgang Dahmen Ralf Massjung Institut fur Geometrie und Praktische Mathematik RWTH Aachen52056 AachenGermany Universite Louis Pasteur Institut de Recherche Mathematique AvanceeCNRS UMR 750167084 StrasbourgFrance

This paper is concerned with preconditioners for interior penalty discontinuous Galerkin discretizations of second-order elliptic boundary value *** extend earlier related results in[7]in the following *** concrete realizations of splitting the nonconforming trial spaces into a conforming and(remaining)nonconforming part are identified and shown to give rise to uniformly bounded condition *** asymptotic results are complemented by numerical tests that shed some light on their respective quantitative behavior.

关键词： Interior penalty method energy-stable splittings admissible averaging operators frames multilevel Schwarz preconditioners discontinuous Galerkin methods

Cost-analysis of inpatient and outpatient parenteral antimicrobial therapy in orthopaedics: A systematic literature review

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World Journal of Clinical Cases 2019年第14期7卷 1825-1836页

作者： Christoph kolja Boese Philipp Lechler Michael Frink Michael Hackl Peer Eysel Christian Ries Department of Orthopaedic and Trauma Surgery University Hospital of CologneCologne 50931Germany Clinic for Trauma and Hand Surgery KreisklinikenAltotting 84503Germany Center for Orthopaedics and Trauma Surgery University Hospital Giessen and MarburgMarburg 35043Germany

BACKGROUND Increasing numbers of total joint arthroplasties and consecutive revision surgery are associated with the risk of periprosthetic joint infections (PPJI). Treatment of PPJI is complex and associated with immense socio-economic burden. One treatment aspect is parenteral antiinfective therapy, which usually requires an inpatient setting [Inpatient parenteral antibiotic therapy (IPAT)]. An alternative is outpatient parenteral treatment [Outpatient parenteral antibiotic therapy (OPAT)]. To conduct a health economic cost-benefit analysis of OPAT, a detailed cost analysis of IPAT and OPAT is required. So far, there is a lack of knowledge on the health economic effects of IPAT and OPAT for PPJI. AIM To review an economic comparison of IPAT and OPAT. METHODS A systematic literature review was performed through Medline following the PRISMA guidelines. RESULTS Of 619 identified studies, 174 included information of interest and 21 studies were included for quantitative analysis of OPAT and IPAT costs. Except for one study, all showed relevant cost savings for OPAT compared to IPAT. Costs for IPAT were between 1.10 to 17.34 times higher than those for OPAT. CONCLUSION There are only few reports on OPAT for PPJI. Detailed analyses to support economic or clinical guidelines are therefore limited. There is good clinical evidence supporting economic benefits of OPAT, but more high quality studies are needed for PPJI.

关键词： Antibiotic therapy Outpatient parenteral antibiotic therapy Inpatient parenteral antibiotic therapy Cost analysis Periprosthetic joint infection Parenteral

Postnatal germ cell development in cryptorchid boys

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Asian Journal of Andrology 2020年第3期22卷 258-264页

作者： Li-Hua Dong Simone HildorF Erik Clasen-Linde kolja Kvist Dina Cortes Jorgen Thorup Claus Yding Andersen Laboratory of Reproductive Biology Copen hagen University Hospital RigshospitaletCopenhage n 2100Den mark Faculty of Health and Medical Scie nces University of CopenhagenCopenhagen 2200Denmark Department of Pathology Copenhagen University Hospital RigshospitaletCopenhagen 2100Denmark Department of Pediatric Surgery Copenhagen University Hospital RigshospitaletCopenhagen 2100Denmark Department of Pediatrics Copenhagen University Hospital HvidovreCopenhagen 2650Denmark.

Cryptorchidism is associated with infertility in *** orchiopexy is suggested to reduce the *** is lacking on the potential link between infant germ cell maturation and the risk of future *** objective of the study was to evaluate age-related germ cell development in *** for markers of germ cell development(octamerbinding transcription factor 3/4[0CT3/4],placental alkaline phosphatase[PLAP],KIT proto-oncogene[C-KIT],podoplanin[D2-40],Lin-28 homolog A[LIN28],and G antigen 7[GAGE-7])was performed in testicular biopsies from 40 cryptorchid boys aged 4-35 mon *** cell nu mbers and distributi ons were evaluated in cross sectio ns of semi niferous tubules,with and without immuno staini ***3/4,D2-40,and LIN 28 were gen erally expressed in the early stages of germ cell development,as show n by positive expression in germ cells in the central region of seminiferous tubules・In contrast,PLAP and GAGE-7 were expressed in both central and peripheral parts of the tubules in the early stages of development and expressed mainly in a peripheral position with advancing *** cell maturation was delayed in this study population as compared with that observed in our previous study on germ cell markers in a healthy *** number of GAGE-7-positive germ cells per tubular cross section obtained by immunostaining was significantly higher than that obtained by standard hematoxylin and eosin *** immunostaining revealed heterogeneity in germ cell development in cryptorchid *** results shed light on the pathophysiology of germ cell development in boys with cryptorchidism.

关键词： cryptorchidism germ cells immunostaining male fertility preservation reproductive index testis

Sclerotherapy as a primary or salvage procedure for aneurysmal bone cysts:A single-center experience

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World Journal of Orthopedics 2023年第9期14卷 698-706页

作者： kolja Sebastian Weber Claus Lindkær Jensen Michael Mørk Petersen Department of Orthopedic Surgery RigshospitaletCopenhagen 2100Denmark

BACKGROUND Aneurysmal bone cysts(ABC)are benign cystic bone tumors of an osteolytic and locally aggressive *** an alternative to the primary treatment of choice,which consists of curettage with bone grafting,alternative treatment methods with promising results have been *** our department,we have,in recent years,used percutaneous sclerotherapy with *** objective of this study was to identify the healing rate and safety of sclerotherapy with *** To identify the efficacy and safety of sclerotherapy with polidocanol in primary and recurrent *** Twenty-two consecutive patients(median age 12.5 years;range 1-27)with 23 ABCs treated with sclerotherapy with polidocanol from 2016-2021 were included *** patients(48%)had undergone different forms of previous treatment with *** general anesthesia and fluoroscopic guidance,repeated percutaneous injections of 4mg polidocanol/kg body weight were *** review of the electronic medical records,the following were identified:healing and recurrence rate,number of treatments,gender,age,comorbidity,location of the tumor and side effects/complications,as well as any previous surgery for *** median length of radiographic follow-up was 19.5 *** All ABCs except one(96%)showed healing or stable disease after a median of 4(range 1-8)*** clinical and radiographic healing was observed in 16 cysts(70%),while partial radiographic healing with resolution of pain was seen in 6 cases(26%)and considered as stable *** cyst that failed to heal had previously undergone curettage twice with *** patient with a large pelvic ABC experienced,right after two injections,a sudden drop in blood pressure,which could quickly be *** patient with a juxtaphyseal ABC in the femoral neck showed a minor limb length discrepancy because of *** that,no complications were *** Percutaneous sclerotherapy

关键词： Aneurysmal bone cyst Bone tumor Sclerotherapy Polidocanol Healing rate Complications

完全可吸收封堵器——结构性和先天性心脏病治疗的关键进展?

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Science Bulletin 2023年第16期68卷 1733-1734页

作者： Kerstin Piayda Stefan Bertog kolja Sievert Horst Sievert CardioVascular Center Frankfurt Frankfurt 60389Germany Department of Cardiology and Angiology Universitätsklinikum Gieûen und MarburgGieûen 35391Germany

Over the past decades,transcatheter therapy has become the primary option for the treatment of simple congenital heart diseases with the advantages of minimal invasiveness and rapid ***,currently used metal occluders may cause nickel allergies,inflammation,and *** the treatment of ventricular septal defects(VSD),due to the close proximity of the electrical conduction tissue,implantation of conventional occluders may cause conduction *** atrioventricular block can occur in up to 2%of patients undergoing percutaneous perimembranous VSD closure with conventional devices[1].The timing of this event varies,ranging from immediate/intraprocedural to years after the *** commonly,it is observed within the first five days[1],however,late-onset atrioventricular block is fairly *** this reason,no perimembranous VSD closure device has been approved by the US Food and Drug Administration[2].The complicated anatomical structure of VSDs and its anatomical relationship to the atrioventricular node complicates device design and *** this context,bioresorbable occluders have potential *** is conceivable that,due to implant degradation over time and native cardiac tissue coverage,surrounding tissue compression and persistent arrhythmias are less prevalent.

关键词：先天性心脏病 closure conduction

基于人类行为下的多目标跟踪视觉时序注意控制算法研究(英文)

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中国科学技术大学学报 2012年第9期42卷 714-722页

作者：臧学莲 Brscic Drazen 王炜 Hirche Sandra Kuhnlenz kolja 德国慕尼黑大学心理学系德国慕尼黑80802 国际信息通信技术研究中心日本东京1860004 慕尼黑工业大学自动控制工程系德国慕尼黑80333 慕尼黑工业大学高等研究院德国慕尼黑80333

由于移动式机器人所携带的传感器资源有限,能够在时间维度上共享传感器资源,实现多目标跟踪,是智能化机器人重要的研究领域之一.本文提出了一个基于人类行为模型的时序注意控制算法,能够实现使用单个2自由度摄像头实时监控多个自由移动... 详细信息

由于移动式机器人所携带的传感器资源有限,能够在时间维度上共享传感器资源,实现多目标跟踪,是智能化机器人重要的研究领域之一.本文提出了一个基于人类行为模型的时序注意控制算法,能够实现使用单个2自由度摄像头实时监控多个自由移动的目标物体.该算法基于以下三个控制原则:①最小化监控目标位置预测的不确定性以及各个目标物预测效果的差异;②最小化多目标跟踪过程中摄像头切换视角所需的能量消耗;③最大化能够呈现在摄像头视觉范围内的目标物体的个数.算法根据当前检测到目标信息,通过卡尔曼滤波,预测目标物的运动规律,选择下一时刻摄像头的最佳注意视角.该算法通过matlab仿真以及在移动式机器人实体上进行了实验验证,结果显示,该算法能够在时间顺序有效的共享单个摄像头资源,检测摄像头视角范围内的目标的位置,并根据上一个时间点的检测信息预测视角范围外的目标,实现跟踪多个目标物体,降低预测及跟踪的误差,并优化跟踪过程中切换摄像头视角的能量损耗.

关键词：注意控制卡尔曼滤波多目标跟踪

生物Reichardt运动检测器和感受域模板的 FPGA设计与实现

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中国图象图形学报 2009年第12期14卷 2489-2496页

作者： kolja Kuehnlenz 吴海燕 Martin Buss Alexander Borst 张天光慕尼黑工业大学自动控制研究所慕尼黑德国80290 马克斯-普朗克神经生物学研究所 Martinsried德国82152

为了在图像处理中快速地实现运动检测和相机自身运动方式估算,引入了基于生物视觉机制的Reichardt运动检测器模型(EMD)和感受域模板。分析了Reichardt运动检测器模型的基本特性及其缺陷。为了克服模型上的主要缺陷,在应用中选择了一种... 详细信息

为了在图像处理中快速地实现运动检测和相机自身运动方式估算,引入了基于生物视觉机制的Reichardt运动检测器模型(EMD)和感受域模板。分析了Reichardt运动检测器模型的基本特性及其缺陷。为了克服模型上的主要缺陷,在应用中选择了一种优化模型,应用该模型可以得到较好的运动检测结果。同时,提出了基于苍蝇视觉系统的6个感受域模板,用以实现简单自身运动方式的估算,如相机自身的平移、旋转等。最后,在FPGA(FieldProgrammable Gate Array)平台上实现了相关的算法。实验结果表明,优化后的运动检测器可以快速地判断局部运动方向,感受域模板可实现在特定背景下的简单运动方式估算;对分辨率为256×256像素的输入图片,本设计中的FPGA系统可达到每秒350帧的处理速率,所产生的延时仅为0.25μs,达到了快速处理的要求。此模型可应用于实时的机器视觉系统,如进行障碍物检测、整体运动方式估算、UAV/MAV的稳定控制等。

关键词：机器视觉 Reichardt运动检测器感受域运动方式判断 FPGA

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在线监控MOCVD长晶过程中晶片翘曲度

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