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Bertalanffy-Pütter models for the first wave of the COVID-19 outbreak

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Infectious Disease Modelling 2021年第1期6卷 532-544页

作者： Norbert Brunner manfred Kühleitner University of Natural Resources and Life Sciences(BOKU) Department of Integrative Biology and Biodiversity Research(DIBB)A-1180ViennaAustria

The COVID-19 pandemics challenges governments across the *** develop adequate responses,they need accurate models for the spread of the *** least squares,we fitted Bertalanffy-Pütter(BP)trend curves to data about the first wave of the COVID-19 pandemic of 2020 from 49 countries and provinces where the peak of the first wave had been ***-models achieved excellent fits(R-squared above 99%)to all *** them to smoothen the data,in the median one could forecast that the final count(asymptotic limit)of infections and fatalities would be 2.48 times(95%confidence limits 2.42-2.6)and 2.67 times(2.39-2.765)the total count at the respective peak(inflection point).By comparison,using logistic growth would evaluate this ratio as 2.00 for all *** case fatality rate,defined as the quotient of the asymptotic limits of fatalities and confirmed infections,was in the median 4.85%(confidence limits 4.4%e6.5%).Our result supports the strategies of governments that kept the epidemic peak low,as then in the median fewer infections and fewer fatalities could be expected.

关键词： Akaike information criterion(AIC) Bertalanffy-Pütter model(BP-Model) COVID-19 pandemic Epidemic trajectory Least-squares method Simulated annealing algorithm

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用简单方法测定爆轰序列时间差(英文)

含能材料 2000年第2期8卷 60-62页

作者： held M (TDW, 86523 Schrobenhausen, Germany) Schrobenhausen 德国 86523

同步起爆装置的时间差、包括不同雷管的起爆时间差、传爆药爆轰波成长的时间差以及爆轰波最后到达主炸药的时间差 ,可通过印在柔性圆盘钢靶板上的道氏沟槽线的距离来测量 ,测量误差小于 0 .1μs .

关键词：同步起爆装置时间差爆轰序列

Current status of research and application in vascular stents

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Chinese Science Bulletin 2013年第35期58卷 4362-4370页

作者： QI PengKai YANG Ying MAITZ F manfred HUANG Nan Key Laboratory of Advanced Technology of Materials of Education Ministry Southwest Jiaotong University School of Materials Science and Engineering Southwest Jiaotong University Max Bergmann Center of Biomaterials Dresden Leibniz Institute of Polymer Research Dresden Dresden 01097 Germany

Cardiovascular diseases have been the leading cause of death in modern *** vascular stents to treat these coronary and peripheral artery diseases has been one of the most effective and rapidly adopted medical *** the twenty-five years’development of vascular stents,revolutionary cardiovascular stents like drug eluting stents and endothelial progenitor cells capture stents have *** this review,the evolution of vascular stents is summarized,aiming to provide a glimpse into the future of vascular *** designs,focusing on the investigations of new substrates,new platforms,new drugs and new biomolecules are currently under evaluation with promising clinical *** concept of"time sequence functional stent"has been raised in this *** presents anti-proliferative properties in the first phase after implantation and subsequently support *** also shows long-term inertness without release of toxic ions or toxic degradation *** success of this concept is briefly presented with a clinical study in this model stents.

关键词：血管支架心血管疾病应用冠状动脉内皮祖细胞干预措施生物分子时间序列

Carbonates as Foaming Agent in Chip-based Aluminium Foam Precursor

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Journal of Materials Science & Technology 2010年第9期26卷 845-850页

作者： Marco Haesche Dirk Lehmhus Jrg Weise manfred Wichmann Irene Cristina Magnabosco Mocellin University of Bremen Fraunhofer IFAM Federal University of Santa Catarina Florianópolis

Replacement of TiH2 as foaming agent by CaCO3（lime） and CaMg（CO3）2（dolomite） for AlMg4.5-and AlSi9Cu3-foams was investigated considering inluences on foaming capability and cellular *** materials were produced from alloy chip and powder mixtures by means of the thixocasting ***9Cu3 variants showed expansion levels suffcient for commercial *** in expansion observed when CaCO3 and CaMg（CO3）2 were compared as foaming agent are explained based on the course of *** performance of dolomite-based foams relies on formation of stabilizing MgO phases,which do not develop during decomposition of CaCO3 in Al-Si-Cu alloys

关键词： Aluminium foam Foaming agent Calcium carbonate Dolomite Stabilisation

Principles of carbon nanotube dielectrophoresis

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Nano Research 2021年第7期14卷 2188-2206页

作者： Wenshan Li Frank Hennrich Benjamin S.Flavel Simone Dehm manfred Kappes Ralph Krupke Institute of Nanotechnology Karlsruhe Institute of TechnologyKarlsruhe 76021Germany Institute of Physical Chemistry Karlsruhe Institute of TechnologyKarlsruhe 76021Germany Institute of Materials Science Technische Universität DarmstadtDarmstadt 64287Germany Institute for Quantum Materials and Technologies Karlsruhe Institute of TechnologyKarlsruhe 76021Germany School of Mechanical Engineering Shanghai Jiao Tong UniversityNo.800 Dongchuan RoadShanghai 200240Chin

Dielectrophoresis(DEP)describes the motion of suspended objects when exposed to an inhomogeneous electric *** has been successful as a method for parallel and site-selective assembling of nanotubes from a dispersion into a sophisticated device *** have conducted extensive works to understand the DEP of nanotubes in aqueous ionic surfactant ***,only recently,DEP was applied to polymer-wrapped single-walled carbon nanotubes(SWCNTs)in organic solvents due to the availability of ultra-pure SWCNT *** this paper,the focus is on the difference between the DEP in aqueous and organic *** starts with an introduction into the DEP of carbon nanotubes(CNT-DEP)to provide a comprehensive,in-depth theoretical background before discussing in detail the experimental procedures and *** academic interests,this work focuses on the CNT-DEP deposition scheme,discusses the importance of the electrical double layer,and employs finite element simulations to optimize CNT-DEP deposition condition with respect to the experimental *** important outcome is an understanding of why DEP in organic solvents allows for the deposition and alignment of SWCNTs in low-frequency and even static electric fields,and why the response of semiconducting SWCNTs(s-SWCNTs)is strongly enhanced in non-conducting,weakly polarizable *** to further improve CNT-DEP for s-SWCNT-relevant applications are given as ***,this work should serve as a practical guideline to select the appropriate setting for effective CNT DEPs.

关键词： single-walled carbon nanotubes hydrodynamics assembly deposition alignment polarizability dielectrophoresis

Andrea Palladio, 1508-1580

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Real-Time Characterization of Fibrinogen Interaction with Modified Titanium Dioxide Film by Quartz Crystal Microbalance with Dissipation

作者： manfred Wundram.

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Chinese Journal of Chemical Physics 2014年第3期27卷 355-360页

作者： An-sha Zhao Zhao Wang Xiao-hua Zhu manfred F. Maitz Nan Huang Key Laboratory of Advanced Materials Technology of Ministry of:Education Department of Materials Science and Engineering Southwest Jiaotong University Chengdu 510031 China Leibniz Institute of Polymer Research Dresden Max Bergmann Center of Biomaterials Dresden Dresden Germany

The adsorption of fibrinogen can be used as a quick indicator of surface haemocompatibility because of its prominent role in coagulation and platelet adhesion. In this work the molecular interaction between fibrinogen and a modified titanium oxide surface/platelet has been studied by quartz crystal microbalanee with dissipation （QCM-D） in situ. In order to further characterize the conformation of adsorbed fibrinogen, αC and γ-chain antibody were used to check the orientation and denaturation of fibrinogen on solid surface. QCM-D investiga- tions revealed the fibrinogen have the trend to adsorb on hydropllilic surface in a side-on orientation by positively charged αC domains, which would reduce the exposure of platelet bonding site on γ chain and enable less platelet adhesion and be activated. These obser- vations suggest that certain conformations of adsorbed fibrinogen are less platelet adhesive than others, which opens a possibility for creating a non-platelet adhesive substrates.

关键词： Quartz crystal microbalance with dissipation Fibrinogen adsorption Confor- mation change Blood platelet

一种达到最高效率的新型软切换三电平逆变器拓扑结构(英文)

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中国电机工程学报 2013年第21期33卷 1-8,187页

作者： manfred W.Gekeler HTWG康斯坦茨应用科技大学

软开关三电平逆变器（soft switching three-level inverter,S3L）于2011年首次推出。它代表了脉宽调制（pulsewidth modulation,PWM）逆变器的一种新的拓扑结构,应用于电力驱动,光伏和风力发电厂的并网逆变器,以及用于供电领域。因其... 详细信息

软开关三电平逆变器（soft switching three-level inverter,S3L）于2011年首次推出。它代表了脉宽调制（pulsewidth modulation,PWM）逆变器的一种新的拓扑结构,应用于电力驱动,光伏和风力发电厂的并网逆变器,以及用于供电领域。因其结构非常简单,所以价格相当低廉。它完全在软切换模式下运行,并且持续表现出极低的切换损耗。其结果是,效率非常高,而且可以实现特别高的切换频率。该论文对其功能进行描述,还展示一部输出电源为20~90 kVA的逆变器样品,并对测试结果作详细说明。

关键词：逆变器三电平逆变器软切换效率电力驱动并网逆变器光伏逆变器风力发电逆变器

THE CLIMATO-ECOLOGICAL FUNDAMENTALS OF THE “MANMADE COMMUNITIES” OF TROPICAL PERENNIAL CROPS ON HAINAN ISLAND, CHINA

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自然资源学报 1993年第1期 46-62页

作者： manfred DOMRSInstitute for Geography, University of Mainz ,Germany

According to the leading national classification of the climate of China, given by B. Huang (revised version 1986), Hainan falls into the tropical climatic realm, subdivided into a "peripheral tropical" type for the northern part and a "middle tropical" type for the southern part of the island. While all-year-round frost-free conditions define the tropics in general, the 20t-isotherm for the coldest month represents the boundary between the peripheral tropical and middle tropical types. Compared to the tropical climate in general, Hainan experiences distinctly lower winter temperatures which thus result in a larger annual temperature variation. In terms of precipitation, Hainan records a long rainy season through the southwest monsoon and typhoon seasons from May until October while winter precipitation is comparably lower. Representing two agroclimatic hazards, strong typhoon winds and cold waves seriously affect Hainan. Although to be defined as "marginal tropica-1", the climatic conditions on Hainan

关键词： Hainan island rubber-cum tea farms "manmade communities