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Utilization of nonlinear vibrations of soft pipe conveying fluid for driving underwater bio-inspired robot

Applied Mathematics and Mechanics(English Edition) 2022年第7期43卷 1109-1124页

作者： Huliang DAI Yixiang HE Kun ZHOU Zerui PENG Lin WANG P.hagedorn Department of Mechanics Huazhong University of Science and TechnologyWuhan 430074China Hubei Key Laboratory for Engineering Structural Analysis and Safety Assessment Wuhan 430074China Department of Mechanical Engineering Technische Universität at DarmstadtDarmstadt 64293Germany State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of TechnologyDalian 116024Liaoning ProvinceChina

Creatures with longer bodies in nature like snakes and eels moving in water commonly generate a large swaying of their bodies or tails,with the purpose of producing significant frictions and collisions between body and fluid to provide the power of consecutive forward *** swaying can be idealized by considering oscillations of a soft beam immersed in water when waves of vibration travel down at a constant *** present study employs a kind of large deformations induced by nonlinear vibrations of a soft pipe conveying fluid to design an underwater bio-inspired snake robot that consists of a rigid head and a soft *** the head is fixed,experiments show that a second mode vibration of the tail in water occurs as the internal flow velocity is beyond a critical *** the corresponding theoretical model based on the absolute nodal coordinate formulation(ANCF)is established to describe nonlinear vibrations of the *** the head is free,the theoretical modeling is combined with the computational fluid dynamics(CFD)analysis to construct a fluid-structure interaction(FSI)simulation *** swimming speed and swaying shape of the snake robot are obtained through the FSI simulation *** are in good agreement with experimental *** importantly,it is demonstrated that the propulsion speed can be improved by 21%for the robot with vibrations of the tail compared with that without oscillations in the pure jet *** research provides a new thought to design driving devices by using nonlinear flow-induced vibrations.

关键词： soft pipe conveying fluid underwater bio-inspired robot flutter fluidstructure interaction(FSI) absolute nodal coordinate formulation(ANCF)

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The Effectiveness of Implementing Dietary Interventions on Weight Management for the Elderly in A Senior Care Center

The Effectiveness of Implementing Dietary Interventions on W...

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中国营养学会第十五届全国营养科学大会

作者： Shuyi Zhou hagedorn University of Texas Arlington School of Social Work

Being an unhealthy weight is associated with health risks for older adults. Research has suggested that obesity is associated with an increased risk of many chronic diseases and mortality, while being underweight is linked to elevated mortality risk. A proper and timely nutrition intervention could be helpful for seniors to maintain a healthy weight. However, few studies have explored the effectiveness of nutrition interventions on weight management in senior care centers in China. This study aims to investigate the effectiveness of implementing nutrition interventions on weight management for the elderly in a senior care center. Methods Participants were recruited from residents who stayed in a senior care center in Xiamen City, Fujian Province from October 2020 to December 2021. Participants who left or lived in the senior care center for less than one month, who could not be weighed due to medical conditions, or had missing data were excluded. Detailed information on medical history, observations from a physical examination report, height, and weight were obtained at baseline. A registered dietitian provided nutritional screening(assessed by the Malnutrition Universal Screening Tool), nutritional assessment(determined by the Nutrition-Focused Physical Exam), dietary diaries analysis(based on 7-day food dietary diaries), personalized nutritional interventions for participants, and follow-up regularly or as needed. The registered dietitian also provided nutrition education classes once a month. In addition, the registered dietitian designed the aging-friendly and nutritionally-balanced menu according to the Chinese Dietary Guidelines for the Elderly(2016 Version). Participants were weighed once a month by trained staff. The BMI levels and weight changes of participants were calculated and analyzed by the registered dietitian. The registered dietitian would conduct a timely nutrition intervention if a participant was found to have significant weight change. Categori

关键词： nutrition intervention weight management nutrition status older adults senior care center China

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Displacement Talbot lithography for nanoengineering of III-nitride materials

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Microsystems & Nanoengineering 2019年第1期5卷 38-49页

作者： Pierre-Marie Coulon Benjamin Damilano Blandine Alloing Pierre Chausse Sebastian Walde Johannes Enslin Robert Armstrong Stephane Vezian Sylvia hagedorn Tim Wernicke Jean Massies Jesus Zuniga‐Perez Markus Weyers Michael Kneissl Philip A.Shields Department of Electrical&Electronic Engineering University of BathBath BA27AYUK Universite Cote d’Azur CNRSCRHEArue B.Gregory06560 ValbonneFrance Ferdinand-Braun-Institut Leibniz-Institut fur HochstfrequenztechnikGustav-Kirchhoff-Str.412489 BerlinGermany Technische Universität Berlin Institute of Solid State Physics10623 BerlinGermany

Nano-engineering III-nitride semiconductors offers a route to further control the optoelectronic properties,enabling novel functionalities and *** a variety of lithography techniques are currently employed to nanoengineer these materials,the scalability and cost of the fabrication process can be an obstacle for large-scale *** this paper,we report on the use of a fast,robust and flexible emerging patterning technique called Displacement Talbot lithography(DTL),to successfully nano-engineer III-nitride ***,along with its novel and unique combination with a lateral planar displacement(D^(2)TL),allow the fabrication of a variety of periodic nanopatterns with a broad range of filling factors such as nanoholes,nanodots,nanorings and nanolines;all these features being achievable from one single *** illustrate the enormous possibilities opened by DTL/D2TL,dielectric and metal masks with a number of nanopatterns have been generated,allowing for the selective area growth of InGaN/GaN core-shell nanorods,the top-down plasma etching of III-nitride nanostructures,the top-down sublimation of GaN nanostructures,the hybrid top-down/bottom-up growth of AlN nanorods and GaN nanotubes,and the fabrication of nanopatterned sapphire substrates for AlN *** with their planar counterparts,these 3D nanostructures enable the reduction or filtering of structural defects and/or the enhancement of the light extraction,therefore improving the efficiency of the final *** results,achieved on a wafer scale via DTL and upscalable to larger surfaces,have the potential to unlock the manufacturing of nano-engineered III-nitride materials.

关键词： Talbot planar nitride

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德国农业——关于经济、政治及环境可持续性的一些见解

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人类环境杂志 1997年第7期26卷 448-453页

作者： Konrad hagedorn 王燕格丁根大学

本文就当前德国农业所发生的主要变化是否与经济、社会、环境和政治可持续性相适应的问题进行了讨论。所讨论的第一个问题是西德农业结构调整的过程和收入问题。结论是农场家庭必须克服的社会困难、由政策变化引起的经济崩溃及农业耕作... 详细信息

本文就当前德国农业所发生的主要变化是否与经济、社会、环境和政治可持续性相适应的问题进行了讨论。所讨论的第一个问题是西德农业结构调整的过程和收入问题。结论是农场家庭必须克服的社会困难、由政策变化引起的经济崩溃及农业耕作方式所造成的严重的生态问题明显地不符合可持续发展原则。本文讨论的第二个问题是关于东德农业中发生变化的两个主要方面的转变:集体化农场的重新构建和国有土地的私有化。从长远来看,由这些变化带来的农业的机构配置和组织形式不可能总是可持续的,这是因为转变过程本身带来了巨大的经济转化成本和因其诱发了有关不同利益集团和政治网的寻求各种活动的政治分歧。共同的农业政策(CAP)的现在和末来的变化是本文讨论的第三部分,尤其是关于当前对CAP改革问题的讨论。农业还面临着严峻的可持续的问题。花费在每公顷或每头牲畜的费用使分配产生了巨大的偏差从而降低了经济效益。而这些也只能证明是一些暂时的因价格下降引起的调整过程的补救措施。另外,用于环境项目中改革措施的花费只有很少的一部分。最后,本文通过对一些主要问题的简要说明描述了德国农业的生态状况。

关键词：德国农业农业可持续性可持续农业

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风险评估是机器设备技术安全的基础

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现代制造 2013年第34期 36-38页

作者： STEPHAN hagedorn

绝大多数欧洲的机器设备生产：厂家都清楚，为什么要对其生产的机器设备做根本性的风险评估。对此，2006／42／EG欧洲准则（简称机器设备评估准则）中有这方面的要求。尽管这样，当PhoenixContact公司的工作人员对某个机器设备生产厂家... 详细信息

绝大多数欧洲的机器设备生产：厂家都清楚，为什么要对其生产的机器设备做根本性的风险评估。对此，2006／42／EG欧洲准则（简称机器设备评估准则）中有这方面的要求。尽管这样，当PhoenixContact公司的工作人员对某个机器设备生产厂家提供技术支持并对机器设备做风险评估的服务时，

关键词：机器设备风险评估技术安全基础 tact公司设备生产生产厂家设备评估

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Indirect calorimetry in obese female subjects: Factors influencing the resting metabolic rate

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World Journal of Experimental Medicine 2012年第3期2卷 58-64页

作者： Theresa hagedorn Eleonora Poggiogalle Claudia Savina Cecilia Coletti Maddalena Paolini Luciano Scavone Barbara Neri Lorenzo Maria Donini Rehabilitation Clinical Institute "Villadelle Querce" Nemi 00040 Rome Italy Department of Experimental Medicine Medical Physiopathology Food Science and Endocrinology Section Food Science and Human Nutrition Research Unit Sapienza University of Rome

AIM: To evaluate selected factors influencing resting energy expenditure(REE) in obese female ***: Seventy seven 61 obese Caucasian women [mean age of 52.93 ± 13.45 years, and mean body mass index(BMI) of 41.78 ± 11.54 kg/m2] were enrolled; measurements of resting metabolic rate(RMR) by a ventilated, open-circuit system, indirect calorimeter were performed after an overnight fast. Body composition as well as medications, physical parameters, blood samples, disease pattern, and smoking were considered. RESULTS: RMR was significantly associated with body weight(r = 0.732, P < 0.001), body height(r = 0.401,P = 0.008), BMI(r = 0.504, P < 0.001), waist circumference(r = 0.602, P < 0.001), mid-upper arm circumference(r = 0.417, P = 0.006), mid-upper arm muscle circumference(r = 0.344, P = 0.028), total body water(r = 0.339, P = 0.035), body temperature(r = 0.409, P = 0.007), smoking(P = 0.031), serum T4 levels(r = 0.331, P = 0.036), obstructive sleep apnoea syndrome(OSAS; P = 0.023), impaired glucose tolerance(IGT; P = 0.017) and impaired glycaemic status, including hyperinsulinism, IGT and diabetes mellitus(P = 0.003).CONCLUSION: Future research should be prompted to optimize the procedure of indirect calorimetry to achieve clinical benefits in obese subjects.

关键词： Indirect calorimetry Obesity Resting metabolic rate Resting energy expenditure

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Improved performance of UVC-LEDs by combination of high-temperature annealing and epitaxially laterally overgrown AlN/sapphire

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Photonics Research 2020年第4期8卷 589-594页

作者： NORMAN SUSILO EVIATHAR ZIFFER SYLVIA hagedorn LEONARDO CANCELLARA CARSTEN NETZEL NEYSHA LOBO PLOCH SHAOJUN WU JENS RASS SEBASTIAN WALDE LUCA SULMONI MARTIN GUTTMANN TIM WERNICKE MARTIN ALBRECHT MARKUS WEYERS MICHAEL KNEISSL Institute of Solid State Physics Technische Universitat BerlinHardenbergstraβe 3610623 BerlinGermany Ferdinand-Braun-Institut Leibniz-Institut für HochstfrequenztechnikGustav-Kirchhoff-Strafβe 412489 BerlinGermany Leibniz-Institut für Kristallzüchtung Max-Born-Strafβe 212489 BerlinGermany

We report on the performance of AlGaN-based deep ultraviolet light-emitting diodes(UV-LEDs)emitting at 265 nm grown on stripe-patterned high-temperature annealed(HTA)epitaxially laterally overgrown(ELO)aluminium nitride(AIN)/sapphire *** this purpose,the structural and electro-optical properties of ultraviolet-c light-emitting diodes(UVC-LEDs)on as-grown and on HTA planar AlN/sapphire as well as ELO AlN/sapphire with and without HTA are investigated and *** measurements reveal dark spot densities of 3.5×10^9 cm^-2,1.1×10^9 cm^-2,1.4×10^9 cm^-2,and 0.9×10^9 cm^-2 in multiple quantum well samples on as-grown planar AIN/sapphire,HTA planar AlN/sapphire,ELO AlN/sapphire,and HTA ELO AlN/sapphire,respectively,and are consistent with the threading dislocation densities determined by transmission electron microscopy(TEM)and high-resolution X-ray diffraction rocking *** UVC-LED performance improves with the reduction of the threading dislocation densities(TDDs).The output powers(measured on-wafer in cw operation at 20 mA)of the UV-LEDs emitting at 265 nm were 0.03 mW(planar AlN/sapphire),0.8 mW(planar HTA AlN/sapphire),0.9 mW(ELO AlN/sapphire),and 1.1 mW(HTA ELO AlN/sapphire),***,Monte Carlo ray-tracing simulations showed a 15%increase in light-extraction efficiency due to the voids formed in the ELO *** results demonstrate that HTA ELO AlN/sapphire templates provide a viable approach to increase the efficiency of UV-LEDs,improving both the internal quantum efficiency and the light-extraction efficiency.

关键词： Improved performance UVC-LEDs combination high-temperature annealing epitaxially laterally overgrown AlN/sapphire AlN UVC

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特比萘芬引起的亚急性皮肤红斑狼疮病例报道和文献回顾

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世界核心医学期刊文摘（皮肤病学分册） 2005年第1期1卷 28-29页

作者： Matthes T. hagedorn M. 田中伟 Hautklinik des Klinikum Darmstadt Hedelberger Landstra.e 379 64297 Darmstadt Germany Dr.

We report on a patient with terbinafine-induced SCLE covering clinical, histopathological and serological *** serological results included ANA, SS-A (Ro)-antibodies and anti-histone-antibodies with specificity for H1 and *** literature on terbinafine-induced SCLE is *** discuss H1-and H3-specific anti-histone antibodies as a possible diagnostic criterion of drug-induced SCLE.

关键词：特比萘芬文献回顾抗组蛋白抗体血清学诊断标准特异性

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通过主要组分的热降解行为研究轮胎的热降解

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轮胎工业 2014年第11期34卷 652-658页

作者： S.Seidelt M.Mller-hagedorn H.Bockhorn 赵敏 Institut für Technische Chemie und Polymerchemie Universitt Karlsruhe(TH) 北京橡胶工业研究设计院

受西方国家限制立法越来越多的影响，废旧轿车轮胎的处置越来越引起人们的注意。通常的处置方式是填埋，但填埋处置废旧轿车轮胎会有一些问题，如由于轮胎的体积不能被压缩而需要大量的空间。此外，由于可能发生意外火灾排放大量有害气... 详细信息

受西方国家限制立法越来越多的影响，废旧轿车轮胎的处置越来越引起人们的注意。通常的处置方式是填埋，但填埋处置废旧轿车轮胎会有一些问题，如由于轮胎的体积不能被压缩而需要大量的空间。此外，由于可能发生意外火灾排放大量有害气体，填埋也具有潜在风险。为了规避这些缺点，汽车轮胎在水泥行业被用来替代化石燃料。这种热回收策略能利用轮胎含有的高能量。一种替代燃烧废旧轮胎的方法是热解进行循环回收利用。热解通过从轮胎获得能源和化学物质来利用废旧轮胎的经济有效值。金属和炭黑从热解产物中分离出来后，煤气、油类和残渣可作为工业原材料。

关键词：轿车轮胎热降解行为研究组分填埋处置回收利用热解产物处置方式

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降压治疗时诊室血压与24h动态血压不成比例下降依赖于降压治疗前的血压水平

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中华高血压杂志 2014年第10期22卷 913-913页

作者：赵狄练桂丽 Schmieder RE Schmidt ST Riemer T Dechend R hagedorn I Senges J Messerli FH Zeymer U

降压治疗患者24h动态血压与诊室血压的长期关系并不明确。该研究对象为降压治疗需要逐渐加量的高血压患者。治疗药物包括直接肾素抑制剂阿利吉仑、血管紧张素转换酶抑制剂/血管紧张素受体拮抗剂或不阻断肾素血管紧张素系统的药物,单用... 详细信息

降压治疗患者24h动态血压与诊室血压的长期关系并不明确。该研究对象为降压治疗需要逐渐加量的高血压患者。治疗药物包括直接肾素抑制剂阿利吉仑、血管紧张素转换酶抑制剂/血管紧张素受体拮抗剂或不阻断肾素血管紧张素系统的药物,单用或与已用药物联用。记录所有患者的基线及1年后诊室血压及24h动态血压。

关键词： 24h动态血压血压水平降压治疗诊室血管紧张素转换酶抑制剂血管紧张素受体拮抗剂治疗前肾素血管紧张素系统

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