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Visual Study on Flow and Operational Characteristics of Flat Plate Closed Loop Pulsating Heat Pipes

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Journal of Donghua University(English Edition) 2009年第1期26卷 80-84页

作者：杨洪海 Groll manfred Khandekar Sameer College of Environmental Science and Engineering Donghua University Institute of Nuclear Technology and Energy System University of Stuttgart Mechanical Engineering Department Indian Institute of Technology

This paper presents an experimental study including visualization on a flat plate closed loop pulsating heat *** consists of a total of 40 channels with square cross section(2 mm×2 mm,165 mm long) machined directly on an aluminum plate(180 mm×120 mm×3 mm) covered by a transparent *** working fluid employed is *** a result,various flow patterns and their transitions are observed and found to be related to the fluid fill ratio,input heat load and the device *** the operational characteristics and working mechanism are discussed.

关键词： flat plate closed loop pulsating heat pipes fill ratio flow patterns operational characteristics

Construction and Analysis of an Adapted Spectral Finite Element Method to Convective Acoustic Equations

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Communications in Computational Physics 2016年第6期20卷 1-22页

作者： Andreas Huppe Gary Cohen Sebastien Imperiale manfred Kaltenbacher TU Wien Institute of Mechanics and MechatronicsGetreidemarkt 9/E3251060WienAustria Inria-CNRS-ENSTA Saclay Ile-de-France91120 PalaiseauFrance Inria Saclay Ile-de-France91120 PalaiseauFrance

The paper addresses the construction of a non spuriousmixed spectral finiteelement(FE)method to problems in the field of computational *** a computational scheme for the conservation equations of linear acoustics,the extensiontowards convected wave propagation is *** aeroacoustic applications,the mean flow effects can have a significant impact on the generated soundfield even for smaller Mach *** those convective terms,the initial spectralFE discretization leads to non-physical,spurious ***,a regularizationprocedure is proposed and qualitatively investigated bymeans of discrete eigenvaluesanalysis of the discrete operator in space.A study of convergence and an applicationof the proposed scheme to simulate the flow induced sound generation in the processof human phonation underlines stability and validity.

关键词： Spectral finite elements aeroacoustics perturbation equations

Therapy of gastric mucosa associated lymphoid tissue lymphoma

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World Journal of Gastroenterology 2007年第26期13卷 3554-3566页

作者： Andrea Morgner Renate Schmelz Christian Thiede manfred Stolte Stephan Miehlke Medical DepartmentⅠ University HospitalTechnical University DresdenGermany Institute for Pathology Academic Teaching Hospital BayreuthBayreuthGermany

Gastric mucosa associated lymphoid tissue （MALT） lymphoma has recently been incorporated into the World Health Organization （WHO） lymphoma classification, termed as extranodal marginal zone B-cell lymphoma of MALT-type. In about 90% of cases this lymphoma is associated with H pylori infection which has been dearly shown to play a causative role in lymphomagenesis. Although much knowledge has been gained in defining the clinical features, natural history, pathology, and molecular genetics of the disease in the last decade, the optimal treatment approach for gastric MALT lymphomas, especially locally advanced cases, is still evolving. In this review we focus on data for the therapeutic, stage dependent management of gastric MALT lymphoma. Hence, the role of eradication therapy, surgery, chemotherapy and radiotherapy is critically analyzed. Based on these data, we suggest a therapeutic algorithm that might help to better stratify patients for optimal treatment success.

关键词： Gastric lymphoma Mucosa-associatedlymphoid tissue H pylori Eradication Radiation Surgery Chemotherapy Molecular genetics

Melt emulsification-Is there a chance to produce particles without additives?

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Particuology 2011年第5期9卷 506-509页

作者： Karsten Khler Andreas Hensel manfred Kraut Heike P. Schuchmann Food Process Engineering Karlsruhe Institute of Technology (KIT) Mikroverfahrenstechnik Karlsruhe Institute of Technology (KIT)

Melt emulsification is a well known process. Milk is thus homogenized for over 100 years. In the melt emulsification process, the future disperse phase is melted and dispersed into droplets, the size of which is controlled by an emulsification process. After emulsification, the droplets are cooled down and solid particles of spherical shape are formed. In order to realize melt emulsification processes, we developed the new SHM （Simultaneous Homogenizing and Mixing） nozzle, which enables us to mix separate phases directly into the droplet forming zone of homogenization nozzles. This molten milk fat globule can be homogenized at elevated fat content （up to 42 vol% instead of max. 17 vol%） and elevated temperatures （up to 150 ℃ instead of max. 70 ℃） without loosing product quality as for conventional homogenization processes. In addition, more than 80% of the energy costs can be saved and additional mixing units can be spared. This is realized by a controlled and quick dilution and cooling down of molten fat globules directly after their disruption in the nozzle itself. SHM-technology also allows for the dispersing of molten waxes. Instant cooling down after adjusting particle sizes also allows us to work without emulsifiers or other additives as absolutely required in conventional melt emulsification processes where molten droplets will coalesce upon their collisions in the homogenization nozzle. SHM-melt emulsification is thus an alternative to conventional milling processes, which are often limited by the stickiness of these products.

关键词： Melt emulsification Dispersion Emulsion Homogenization Mixing Milk CreamWax

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

Real-world emission factors for Caterpillar 797B heavy haulers during mining operations

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Particuology 2016年第5期14卷 22-30页

作者： Xiaoliang Wang Judith C. Chow Steven D. kohl Kevin E. Percy Allan H. Legge John G. Watson Desert Research Institute 2215 Raggio Parkway Reno NV 895J2 USA Graduate Faculty University of Nevada Reno NV89503 USA The State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences Xi'an 710075 China Wood Buffalo Environmental Association 330 Thickwood Boulevard Fort McMurray AB Canada 7DK 1 Y1 Biosphere Solutions 1610 1 lth Avenue N.W. Calgary AB Canada T2N IG9

Real-world fuel-based emission factors （EFs） from Caterpillar 797B diesel heavy haulers when used for oil sands mining operations were measured using an on-hoard portable emissions monitoring system. Average EFs （in g/kg fuel） for 16 separate tests on four trucks were 3150 ± 4 for CO2, 2.51 ± 1.30 for CH4, 10.28 ± 3.21 for CO, 0.61 ± 0.32 for non-methane hydrocarbons, 55.49 ± 9,75 for NOx （reported as NO2）, 0.70 ± 0.17 for PM2.s （mass of particles with aerodynamic diameter 〈2.5 μm）, and 0.34 ± 0.05 for black carbon （BC）. Ultrafine particle numbers averaged （4.7 ± 4.1 ） × 10^15 particleslkg fuel. Fuel-based EFs of NO, NO2, and particle numbers were higher during idling, whereas PM2.5 and BC EFs were higher during traveling without a load. A comparison of emissions with those reported by oil sands facilities showed large variations, both among the facilities and between the reported emissions and the real-world measurements.

关键词： Heavy hauler Emission Nonroad Portable emissions measurement system Mining Oil sands

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

Andrea Palladio, 1508-1580

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