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High velocity suspension flame spraying (HVSFS) of metal doped bioceramic coatings

Bioactive Materials 2017年第3期2卷 162-169页

作者： p.krieg A.Killinger R.Gadow S.Burtscher A.Bernstein Institute for Manufacturing Technologies of Ceramic Components and Composites(IMTCCC) University of StuttgartAllmandring 7b70569 StuttgartGermany Musculoskeletal Research Lab Department of SurgeryClinics of Orthopedics and Trauma SurgeryUniversity of Freiburg-Medical CentreHugstetter Straße 5579106 FreiburgGermany

*** Calcium phosphate ceramics,such as hydroxyapatite or tricalciumphosphate as well as bioglass,are successfully used as coatings to improve the fixation of dental implants or load-bearing implants in the human bone[1].The demand for surgical procedures such as hip and knee arthroplasties,primary as well as revision procedures,is projected to increase for the foreseeable future[2].The possibility of an infection is amajor risk for all implants[3].The treatment of these periprosthetic joint infections is difficult and often requires the replacement of the implant[4],which is a significant burden for the patient and comes at an increased economic cost[5].

关键词： ceramics spraying flame

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基于会话的安全、鲁棒共享控制方法(英文)

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软件学报 2004年第12期15卷 1764-1775页

作者： Bernd krieg-Brckner Robert J Ross BISS BremenInstituteforSafeSystemsGermanyBISSBremenInstituteforSafeSystemsGermany

在共享控制系统中,比如智能服务机器人,操作员和自动化专门系统相互配合,共同控制.有效的共享控制需要复杂的系统体系结构,该结构可以提供安全鲁棒的运行,提供对用户友好的界面.满足这两项需求是一个不寻常的任务.介绍了解决这些问题的... 详细信息

在共享控制系统中,比如智能服务机器人,操作员和自动化专门系统相互配合,共同控制.有效的共享控制需要复杂的系统体系结构,该结构可以提供安全鲁棒的运行,提供对用户友好的界面.满足这两项需求是一个不寻常的任务.介绍了解决这些问题的方法.首先给出一个以会话为中心采用面向代理编程和形式化方法的认知控制体系结构.采用混成设计的SharC认知控制体系结构,可以区分协同代理群体中每一个遥控设备的控制.安全性对共享控制系统来说是极为重要的,因此这种体系结构必须能够保证较高的安全性.最后,描述了作为控制系统核心的形式化建模会话管理器,通过示范平台中自动轮椅的例子说明这些不同的软件范例的应用.

关键词：共享控制认知控制体系结构面向代理编程形式化方法混成设计

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Small bowel volvulus as a complication of von Recklinghausen's disease:A case report

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World Journal of Gastroenterology 2014年第24期20卷 7979-7983页

作者： Thomas Artur Werner Feride Krpil Martin Olaf Schoppe patric Krpil Wolfram Trudo Knoefel Andreas krieg Department of Surgery (A) HeinrichHeine-University and University Hospital Duesseldorf40225 DuesseldorfGermany Institute of pathology Heinrich-Heine-University and University Hospital Duesseldorf40225 DuesseldorfGermany Institute of Diagnostic and Interventional Radiology Heinrich-Heine-University and University Hospital Duesseldorf40225 DuesseldorfGermany

We report the case of a 25-year-old male with Neurofibromatosis type I (NF-1), who presented at the time of admission with clinical findings of an acute abdomen caused by a mechanical obstruction. Computerized tomography showed a volvulus of the terminal ileum with mesenteric swirling as the cause of the patient’s symptoms. Consecutive exploratory laparotomy confirmed the diagnosis and 70 cm of the small intestine was resected due to an affection of the mesentery by multiple neurofibromas. The gastrointestinal tract is affected in approximately 10% of patients with NF-1, however the mesentery is almost always spared. Here we describe the unique case of a patient with a volvulus caused by mesenteric manifestation of von Recklinghausen’s disease, emphasizing the role of surgery in a team of multidisciplinary specialists to treat this multiorganic disease.

关键词： Volvulus Obstruction Von Recklinghausen´ s disease Neurofibromatosis type I Mesenteric neurofibromas

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Higher radiation dose with a shorter treatment duration improves outcome for locally advanced carcinoma of anal canal

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World Journal of Gastroenterology 2007年第6期13卷 895-900页

作者： Kim Huang Daphne Haas-Kogan Vivian Weinberg Richard krieg Department of Radiation Oncology University of California San Francisco CA United States Comprehensive Cancer Center Biostatistics Core University of California San Francisco CA United States

AIM： To assess whether radiation dose and duration of treatment influence local control and survival of patients with locally advanced anal cancer treated with definitive chemoradiation. METHODS： Twenty-eight consecutive patients who were treated with definitive radiation therapy for bulky anal cancers （〉 5 cm in size） were reviewed. Nineteen patients had T3 lesions, 8 patients had T4 lesions, and 15 patients had lymph node involvement. The median tumor size was 7.5 cm. All but one patient received concurrent chemoradiation. The median radiation dose was 54 Gy. The median duration of treatment was 58 d. RESULTS： With a median follow-up of 2.5 years in all patients and 7.8 years in living patients, the 2-year local recurrence-free probability was 570 and overall survival rate was 67%. Neither radiation dose nor duration of treatment alone was predictive of either time to local failure or overall survival. However, longer treatment breaks can potentially mask an advantage over higher radiation doses. Therefore, we examined those patients who received ≥ 54 Gy within 60 d, comparing them to the rest of the patients. Of patients who received ≥54 Gy within 60 d, local progression-free probability was 890 versus 420 for the rest of the group （p = 0.01）. CONCLUSION： Local failure is a significant problem in locally advanced carcinomas of-the anal canal. Higher radiation doses with limited treatment breaks may offer an increase in local control and survival.

关键词： Anal carcinoma Locally advanced Chemoradiation

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Online process Control of Alkaline Texturing Baths: Determination of the Chemical Concentrations

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American Journal of Analytical Chemistry 2014年第3期5卷 205-210页

作者： Martin Zimmer Katrin krieg Jochen Rentsch Department pV production Technology and Quality Assurance Fraunhofer Institute for Solar Energy Systems Freiburg Germany

Almost every monocrystalline silicon solar cell design includes a wet chemical process step for the alkaline texturing of the wafer surface in order to reduce the reflection of the front side. The alkaline texturing solution contains hydroxide, an organic additive usually 2-propanol and as a reaction product silicate. The hydroxide is consumed due to the reaction whereas 2-propanol evaporates during the process. Therefore, the correct replenishment for both components is required in order to achieve constant processing conditions. This may be simplified by using analytical methods for controlling the main components of the alkaline bath. This study gives an overview for a successful analytical method of the main components of an alkaline texturing bath by titration, HpLC, surface tension and NIR spectrometry.