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髌骨后软骨病损的CT关节造影表现

放射学实践 1986年第4期3卷 149-152页

作者： Von M.Reiser n.rupp H.Zacher O.Paar R.Aigner 高育璈中国人民解放军总医院

关节内注射造影剂C T扫描,使对疑有髌骨软骨病者的术前诊断更为容易,这种方法比关节窥镜检查经济,且诊断准确性较高.手术适应证的确定除了临床所见外还要了解软骨变性改变的程度.

关键词：关节造影病人手术图象造影剂 X光乳剂软骨病维生素D缺乏病 CT

Assessing the energy saving potential of using adaptive setpoint temperatures:The case study of a regional adaptive comfort model for Brazil in both the present and the future

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Building Simulation 2024年第3期17卷 459-482页

作者： Daniel Sánchez-García David Bienvenido-Huertas Carlos Rubio-Bellido Ricardo Forgiarini rupp Department of Electrical Engineering University Carlos III of MadridMadridSpain Department of Building Simulation ZEROCEM SLSevilleSpain Department of Building Constructions University of GranadaGranadaSpain Department of Building Constructions II University of SevilleSevilleSpain Section of Design for Sustainability Department of Civil and Mechanical EngineeringTechnical University of DenmarkKgs.LyngbyDenmark

It has been found in recent years that using setpoint temperatures based on adaptive thermal comfort models is a successful method of energy *** studies using adaptive setpoint temperatures incorporate international models from ASHRAE Standard 55 and *** study,however,has instead considered a regional Brazilian adaptive comfort *** study investigates the energy demand arising from the use of a local Brazilian comfort model in order to assess the energy implications from the use of the worldwide ASHRAE Standard 55 adaptive model and various fixed setpoint *** of Brazil’s climate zones,full air-conditioning,mixed-mode building operating modes,present-day climate change scenarios,and future scenarios—specifically Representative Concentration Pathways(RCP)2.6,4.5,and 8.5 for the years 2050 and 2100—have all been taken into account in building energy *** use of adaptive setpoint temperatures based on the Brazilian local model considering mixed-mode has been found to significantly reduce energy consumption when compared to static setpoint temperatures(average energy-saving values ranging from 52%to 58%)and the ASHRAE 55 adaptive model(average values ranging from 15%to 21%).Considering climate change and the mixed-mode Brazilian model,the overall energy demand for the three groups of climatic zones(annual average outdoor temperatures≤21℃,>21 and≤25℃and>25℃)ranged between 2%decrease and 5%increase,4%and 27%increase,and 13%and 45%increase,*** is concluded as a consequence that setting setpoint temperatures based on the Brazilian local adaptive comfort model is a very efficient energy-saving method.

关键词： adaptive thermal comfort building energy simulation energy efficiency climate change adaptive setpoint temperatures local comfort mode

磁共振图像人体正常解剖结构:采用0.35 T超导磁铁检查 Ⅰ:一般成像特点、面颅、颈、心脏和纵隔

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放射学实践 1986年第1期 1-7页

作者： Von M.Reiser ,n.rupp ,R.Petsch ,H.J.Heller ,P.Lukas ,B.Allgayer ,罗汉超同济医科大学附属协和医院

在显示面颅、颈部、心脏和纵隔的结构方面,MR可提供新的和重要的资料.不必改变患者体位而直接显示冠状面、矢状面和斜位断层图像,是MR优于只能作轴位断层的CT之处,并能借此更好地作出空间定位.各器官具有高对比反差,彼此能区别开来.检... 详细信息

在显示面颅、颈部、心脏和纵隔的结构方面,MR可提供新的和重要的资料.不必改变患者体位而直接显示冠状面、矢状面和斜位断层图像,是MR优于只能作轴位断层的CT之处,并能借此更好地作出空间定位.各器官具有高对比反差,彼此能区别开来.检查参数能明显影响图像对比和信噪比.通过计算相对信号强度和弛豫时间,能获得上述这些区别的数量差异.

关键词：信号强度 MR 弛豫时间图像面颅纵隔胸膜间间隙胸磁共振心脏

风湿性关节病的磁共振体层照像术(正常与增生变厚的滑膜图象)

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放射学实践 1987年第4期 135-138页

作者： von M.Reiser K.Lehner J.Zacher n.rupp K.Heizer F.Weigert 陈王善继苏州医学院

对风湿性关节病活动性和预后的定量测定方法迄今仅得部分解决。晚期的骨质改变可由常规X线诊断得以证实。但病变早期的软组织炎症性改变用目前的方法(临床检查,X线软组织摄影,干板X线摄影,同位素扫描,超声检查,热象图,关节造影术)不能... 详细信息

对风湿性关节病活动性和预后的定量测定方法迄今仅得部分解决。晚期的骨质改变可由常规X线诊断得以证实。但病变早期的软组织炎症性改变用目前的方法(临床检查,X线软组织摄影,干板X线摄影,同位素扫描,超声检查,热象图,关节造影术)不能获得准确、理想的诊断。早期渗出性与增生性滑膜炎的鉴别,以及关节腔积液,纤维素沉积,与关节囊膜增生变厚的鉴别对滑膜切除术的适应症和预后均十分重要。本文目的是阐述用MR断层照像如何显示慢性多发性关节炎的关节改变,及MR对显示软组织的改变有何优越性。

关键词：滑膜层增厚隐窝关节病关节囊风湿性图象体层

Effect of Mass Ratio on Hydrodynamic Response of a Flexible Cylinder

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Journal of Marine Science and Application 2016年第1期15卷 50-62页

作者： Haoyang Cen.rupp Carriveau David S-K Ting Turbulence and Energy Laboratory Centre for Engineering Innovation University of Windsor Ontario N9B 3P4 Canada

The effect of the mass ratio on the flow-induced vibration （FIV） of a flexible circular cylinder is experimentally investigated in a towing tank. A Tygon tube with outer and inner diameters of 7.9 mm and 4.8 mm, respectively, was employed for the study. The tube was connected to a carriage and towed from rest to a steady speed up to 1.6 m/s before slowing down to rest again over a distance of 1.6 m in still water. Reynolds number based on the cylinder＇s outer diameter was 800-13,000, and the reduced velocity （velocity normalized by the cylinder＇s natural frequency and outer diameter） spanned from 2 to 25. When connected, the cylinder was elongated from 420 mm to 460 mm under an axial pre-tension of 11 n. Based on the cylinder＇s elongated length, the aspect ratio （ratio of the cylinder＇s length to outer diameter） was calculated as 58. Three mass ratios （ratio of the cylinder＇s structural mass to displaced fluid mass, m＊） of 0.7, 1.0, and 3.4 were determined by filling the cylinder＇s interior with air, water, and alloy powder （nickel-chromium-boron matrix alloy）, respectively. An optical method was adopted for response measurements. Multi-frequency vibrations were observed in both in-line （IL） and cross-flow （CF） responses; at high Reynolds number, vibration modes up to the 3rd one were identified in the CF response. The mode transition was found to occur at a lower reduced velocity for the highest tested mass ratio. The vibration amplitude and frequency were quantified and expressed with respect to the reduced velocity. A significant reduced vibration amplitude was found in the IL response with increasing mass ratios, and only initial and upper branches existed in the IL and CF response amplitudes. The normalized response frequencies were revealed to linearly increase with respect to the reduced velocity, and slopes for linear relations were found to be identical for the three cases tested.

关键词： flow-induced vibration low mass ratio flexible cylinder multi-frequency response hydrodynamic response

Flow Past an Accumulator Unit of an Underwater Energy Storage System： Three Touching Balloons in a Floral Configuration

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Journal of Marine Science and Application 2014年第4期13卷 467-476页

作者： Ahmadreza Vasel-Be-Hagh rupp Carriveau David S-K Ting Turbulence and Energy Laboratory Centre for Engineering Innovation University of Windsor Ontario N9B 3P4 Canada

An LES simulation of flow over an accumulator unit of an underwater compressed air energy storage facility was conducted. The accumulator unit consists of three touching underwater balloons arranged in a floral configuration. The structure of the flow was examined via three dimensional iso surfaces of the Q criterion. Vortical cores were observed on the leeward surface of the balloons. The swirling tube flows generated by these vortical cores were depicted through three dimensional path lines. The flow dynamics were visualized via time series snapshots of two dimensional vorticity contours perpendicular to the flow direction; revealing the turbulent swinging motions of the aforementioned shedding-swirling tube flows. The time history of the hydrodynamic loading was presented in terms of lift and drag coefficients. Drag coefficient of each individual balloon in the floral configuration was smaller than that of a single balloon. It was found that the total drag coefficient of the floral unit of three touching balloons, i.e. summation of the drag coefficients of the balloons, is not too much larger than that of a single balloon whereas it provides three times the storage capacity. In addition to its practical significance in designing appropriate foundation and supports, the instantaneous hydrodynamic loading was used to determine the frequency of the turbulent swirling-swinging motions of the shedding vortex tubes; the Strouhal number was found to be larger than that of a single sphere at the same Reynolds number.

关键词： droplet-shaped bluff body LES swirling flow swinging flow shedding vortex tubes underwater balloons

Machine-learned multi-system surrogate models for materials prediction

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npj Computational Materials 2019年第1期5卷 702-707页

作者： Chandramouli nyshadham Matthias rupp Brayden Bekker Alexander V.Shapeev Tim Mueller Conrad W.Rosenbrock Gábor Csányi David W.Wingate Gus L.W.Hart Department of Physics and Astronomy Brigham Young UniversityProvoUT 84602USA Fritz Haber Institute of the Max Planck Society Faradayweg 4–614195 BerlinGermany Skolkovo Institute of Science and Technology Skolkovo Innovation CenterBuilding 3Moscow 143026Russia Department of Materials Science and Engineering Johns Hopkins UniversityBaltimoreMD 21218USA Engineering Laboratory University of CambridgeTrumpington StreetCambridge CB21PZUK Computer Science Department Brigham Young UniversityProvoUT 84602USA Citrine Informatics 702 Marshall StreetRedwood CityCA 94063USA

Surrogate machine-learning models are transforming computational materials science by predicting properties of materials with the accuracy of ab initio methods at a fraction of the computational *** demonstrate surrogate models that simultaneously interpolate energies of different materials on a dataset of 10 binary alloys(AgCu,AlFe,AlMg,Alni,AlTi,Coni,CuFe,Cuni,FeV,and nbni)with 10 different species and all possible fcc,bcc,and hcp structures up to eight atoms in the unit cell,15,950 structures in *** find that the deviation of prediction errors when increasing the number of simultaneously modeled alloys isntations and learning algorithms were found to qualitatively agree on the prediction errors of formation enthalpy with relative errors of<2.5% for all systems.

关键词： alloys prediction Coni

Response Characteristics of Flexible Risers in Offshore Compressed Air Energy Storage Systems

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Journal of Marine Science and Application 2019年第3期18卷 353-365页

作者： Bo Hu Zhiwen Wang Hongwang Du Wei Xiong Zuwen Wang Institute of Ship Electromechanical Equipment Dalian Maritime UniversityDalian 116026China Turbulence and Energy Laboratory Ed Lumley Centre for Engineering InnovationUniversity of WindsorWindsorOntario N9B 3P4Canada

With the rapid development of marine renewable energy technologies, the demand to mitigate the fluctuation of variable generators with energy storage technologies continues to increase. Offshore compressed air energy storage (OCAES) is a novel flexible-scale energy storage technology that is suitable for marine renewable energy storage in coastal cities, islands, offshore platforms, and offshore renewable energy farms. For deep-water applications, a marine riser is necessary for connecting floating platforms and subsea systems. Thus, the response characteristics of marine risers are of great importance for the stability and safety of the entire OCAES system. In this study, numerical models of two kinds of flexible risers, namely, catenary riser and lazy wave riser, are established in OrcaFlex software. The static and dynamic characteristics of the catenary and the lazy wave risers are analyzed under different environment conditions and internal pressure levels. A sensitivity analysis of the main parameters affecting the lazy wave riser is also conducted. Results show that the structure of the lazy wave riser is more complex than the catenary riser;nevertheless, the former presents better response performance.

关键词： Offshore compressed air energy storage Flexible riser Marine energy Catenary Lazy wave Sensitivity analysis

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掺氮铌酸锂薄膜的制备及基本物性研究

人工晶体学报 2016年第5期45卷 1266-1270页

作者：崔娇钟海涛李文灿孔勇发刘士国陈绍林张玲 Romano rupp 许京军南开大学物理科学学院天津300071 南开大学泰达应用物理研究院弱光非线性光子学教育部重点实验室天津300457

采用激光脉冲沉积与射频等离子体相结合的方法(PLD-RF),在蓝宝石衬底上一步沉积了掺氮铌酸锂(LinbO_3∶n)薄膜。采用X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)和紫外-可见-红外光谱仪(UV-Vis-nIR)对LinbO_3∶n的晶格结构、掺杂含量及... 详细信息

采用激光脉冲沉积与射频等离子体相结合的方法(PLD-RF),在蓝宝石衬底上一步沉积了掺氮铌酸锂(LinbO_3∶n)薄膜。采用X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)和紫外-可见-红外光谱仪(UV-Vis-nIR)对LinbO_3∶n的晶格结构、掺杂含量及价态、光学性质进行了研究。结果表明铌酸锂薄膜沿(006)方向择优生长,其中氮的原子含量为2.04%,替代氧原子的位置,n的掺入有效的窄化了LinbO_3的带隙,使其紫外-可见吸收光谱的吸收边出现红移,并且在铌酸锂禁带中引入了杂质能级(En),能级深度为2.7 e V。

关键词：铌酸锂氮掺杂 PLD-RF