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Combined quantitative microscopy on the microstructure and phase evolution in Li1.3Al0.3Ti1.7(PO4)3 ceramics

journal of Advanced Ceramics 2020年第2期9卷 149-161页

作者： Deniz Cihan GUNDUZ Roland SCHIERHOLZ Shicheng YU Hermann TEMPELa hans KUNGL Rudiger-AEICHEL Forschungszentrum jülich Institute of Energy and Climate Research(IEK-9:Fundamental Electrochemistry)Julich D-52425Germany Forschungszentrum julich Institute of Energy and Climate Research(IEK-12:Helmholtz-Institute Münster:Ionics in Energy Storage)Munster D-48149Germany RWTH Aachen University Institute of Physical ChemistryAachen D-52074Germany

Lithium aluminum titanium phosphate(LATP)is one of the materials under consideration as an electrolyte in future all-solid-state lithium-ion *** ceramic processing,the presence of secondary phases and porosity play an important *** a presence of more than one secondary phase and pores,image analysis must tackle the difficulties about distinguishing between these microstructural *** this study,we study the phase evolution of LATP ceramics sintered at temperatures between 950 and 1100℃by image segmentation based on energy-dispersive X-ray spectroscopy(EDS)elemental maps combined with quantitative analysis of LATP *** found aluminum phosphate(AlPO4)and another phosphate phase((Lix)PyOz).The amount of these phases changes with sintering ***,since the grains act as an aluminum source for AlPO4 formation,the aluminum content in the LATP grains ***,the amount of secondary phase changes from more(Lix)PyOz at 950℃to mainly AlPO4 at 1100℃sintering *** also used scanning electron microscopy(SEM)and confocal laser scanning microscopy(CLSM)to study the evolution of the LATP grains and AlPO4,and LATP grain size increases with sintering *** addition,transmission electron microscopy(TEM)was used for the determination of grain boundary width and to identify the amorphous structure of AlPO4.

关键词： lithium aluminum titanium phosphate(LATP) microstructure quantitative microscopy grain size confocal laser scanning microscopy(CLSM) NASICON

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Effects of sleep bruxism on functional and occlusal parameters:a prospective controlled investigation

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International journal of Oral Science 2012年第3期4卷 141-145页

作者： Michelle Alicia Ommerborn Maria Giraki Christine Schneider Lars Michael Fuck jrg Handschel Matthias Franz Wolfgang hans-Michael Raab Ralf Schfer Department of Operative Dentistry Periodonticsand EndodonticsHeinrich-Heine-University Institute of Psychosomatic Medicine and Psychotherapy Heinrich-Heine-University Private Practice in Orthodontics Konrad-Adenauer-Platz 4LangenfeldGermany Department of Cranio-and Maxillofacial Surgery Heinrich-Heine-University

This study was conducted to verify the results of a preceding retrospective pilot study by means of a prospective controlled investigation including a larger sample size. Therefore, the aim of this clinical investigation was to analyze the relationship between sleep bruxism and several functional and occlusal parameters. The null hypothesis of this study was that there would be no differences among sleep bruxism subjects and non-sleep bruxism controls regarding several functional and occlusal parameters. Fifty-eight sleep bruxism subjects and 31 controls participated in this study. The diagnosis sleep bruxism was based on clinical criteria of the American Academy of Sleep Medicine. Sixteen functional and occlusal parameters were recorded clinically or from dental study casts. Similar to the recently published retrospective pilot study, with a mean slide of 0.77 mm （s.d., 0.69 mm） in the sleep bruxism group and a mean slide of 0.4 mm （s.d., 0.57 mm） in the control group, the evaluation of the mean comparison between the two groups demonstrated a larger slide from centric occlusion to maximum intercuspation in sleep bruxism subjects （Mann-Whitney U-test; P=O.O08）. However, following Bonferroni adjustment, none of the 16 occlusal and functional variables differed significantly between the sleep bruxism subjects and the non-sleep bruxism controls. The present study shows that the occlusal and functional parameters evaluated do not differ between sleep bruxism subjects and non-sleep bruxism subjects. However, as the literature reveals a possible association between bruxism and certain subgroups of temporomandibular disorders, it appears advisable to incorporate the individual adaptive caoacitv of the stomatognathic svstem into future investigations.

关键词： dental occlusion functional parameters prospective study sleep bruxism

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激光二极管端面抽运的多晶Nd∶YAG 1.06μm连续激光器

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中国激光 2004年第1期31卷 16-18页

作者：杨林黄维玲丘军林 Volker Gaebler hans j.Eichler 华中科技大学激光技术国家重点实验室湖北武汉430074 Optical Institute Technical University Berlin

报道了激光二极管端面抽运的多晶Nd∶YAG(polycrystallineNd∶YAGceramic) 1 0 6 μm连续激光器的实验研究。在抽运功率为 0 3W时 ,激光达到阈值开始输出 ;在抽运功率为 9W时 ,输出功率达到 2W ,激光器光光转换效率为 2 2 2 %。

关键词：激光技术固体激光器激光二极管抽运多晶Nd:YAG 端面抽运连续激光器

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Novel method of screw extrusion for fabricating Al/Mg(macro-) composites from aluminum alloy 6063 and magnesium granules

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Transactions of Nonferrous Metals Society of China 2014年第12期24卷 3886-3893页

作者： Kristian Gr tta SKORPEN Eirik MAUL Oddvin REISO hans j rgen ROVEN Department of Materials Science and Engineering Norwegian University of Science and Technology R&D Materials Technology Hydro Aluminium AS Center for Advanced Materials Qatar University

A novel method of screw extrusion was used for producing a bimetal composite Al/Mg from granules containing aluminium alloy 6063 （AA6063） and commercial pure magnesium. Up to 12.5%（mass fraction） pure magnesium was added to the aluminium alloy. In general, the material consisted of a fine grained microstructure. In addition to the phases originating from the input materials, intermetallic phases were observed as islands consisting of the Al2Mg3 phase surrounded byγ-Mg17Al12, throughout the microstructure. The mechanical properties of the extruded material showed a gradual increase in strength with increasing the addition of Mg. The highest registered UTS, well above 350 MPa, was observed for the material containing 10%Mg. Examinations of the fracture surfaces indicated that increasing the magnesium content led to a higher degree of brittle fracture and a gradual change of the fracture micro-mechanisms. The optimization of the post-extrusion processing conditions is still ongoing.

关键词： Al/Mg composites extrusion microstructure mechanical properties

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Effects of a novel bacterial phytase expressed in Aspergillus Oryzae on digestibility of calcium and phosphorus in diets fed to weanling or growing pigs

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journal of Animal Science and Biotechnology 2013年第2期4卷 102-111页

作者： Ferdinando Nielsen Almeida Rommel Casilda Sulabo hans Henrik Stein Department of Animal Sciences University of Illinois

In 2 experiments, 48 weanling （initial BW： 13.5 ± 2.4 kg, Exp. 1） were used to determine effects of a novel bacterial 6-phytase and 24 growing pigs （initial BW： 36.2 ± 4.0 kg, Exp. 2） expressed in Aspergillus oryzae on the apparent total tract digestibility （ATTD） of phosphorus and calcium in corn-soybean meal diets fed to weanling and growing pigs. In Exp. 1 and 2, pigs were randomly allotted to 6 dietary treatments using a randomized complete block design and a balanced 2 period changeover design, respectively. In both experiments, 6 diets were formulated. The positive control diet was a corn-soybean meal diet with added inorganic phosphorus （Exp. 1：0.42 and 0.86% standardized total tract digestible phosphorus and total calcium, respectively; Exp. 2：0.32 and 0.79% standardized total tract digestible phosphorus and total calcium, respectively）. A negative control diet and 4 diets with the novel phytase （Ronozyme HiPhos, DSM Nutritional Products Inc., Parsippany, N j） added to the negative control diet at levels of 500, 1,000, 2,000, and 4,000 phytase units （FYT）/kg were also formulated. In Exp. 1, the ATTD of phosphorus was greater （P 〈 0.01） for the positive control diet （60.5%） than for the negative control diet （40.5%）, but increased （linear and quadratic, P 〈 0.01） as phytase was added to the negative control diet （40.5% vs. 61.6%, 65.1%, 68.7%, and 68.0%）. The breakpoint for the ATTD of phosphorus （68.4%） was reached at a phytase inclusion level of 1,016 FYT/kg. In Exp. 2, the ATTD of phosphorus was greater （P〈 0.01） for the positive control diet （59.4%） than for the negative control diet （39.8%） and increased （linear and quadratic, P〈 0.01） as phytase was added to the negative control diet （39.8% vs. 58.1%, 65.4%, 69.1%, and 72.8%）. The breakpoint for the ATTD of phosphorus （69.1%） was reached at a phytase inclusion level of 801 FYT/kg. in conclusion, the novel bacterial 6-phytase improved the ATTD of phosphorus and calcium in both weanling and growing pigs.

关键词： Calcium Digestibility Phosphorus Phytase Pigs

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Identification of CD13,CD107a,and CD164 as novel basophil-activation markers and dissection of two response patterns in time kinetics of IgE-de-pendent upregulation

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Cell Research 2005年第5期15卷 325-335页

作者： Florian HENNERSDORF,Stefan FLORIAN,Andreas jAKOB,Katharina BAUMGRTNER,Karoline SONNECK,Alfred NORDHEIM,Tilo BIEDERMANN,Peter VALENT,hans-jrg BüHRING University Clinic of Tübingen Department of Internal Medicine II Division of Hematology and Immunology Tübingen Germany Medical University Clinic of Vienna Department of Internal Medicine I Division of Hematology and Hemostaseology Vienna Austria University of Tübingen Proteome Center Tübingen Germany University Clinic of Tübingen Department of Internal Medicine II Division of Hematology and Immunology Tübingen Germany Medical University Clinic of Vienna Department of Internal Medicine I Division of Hematology and Hemostaseology Vienna Austria University of Tübingen Proteome Center Tübingen Germany University Clinic of Tübingen Department of Dermatology Tübingen Germany Medical University Clinic of Vienna Department of Internal Medicine I Division of Hematology and Hemostaseology Vienna Austria University Clinic of Tübingen Department of Internal Medicine II Division of Hematology and Immunology Tübingen Germany

Using two-colour flow cytometry >200 antibodies submitted to the 8th International Workshop of Human Leukocyte Differentiation Antigens (HLDA8) have been analyzed for their reactivity with resting and activated CD203c+ basophils. Four antibodies either non-reactive or weakly reactive with resting basophils exhibited an increased reactivity with basophils activated by anti-IgE-mediated cross-linking of the high affinity IgE receptor (FcεRI). These include antibod- ies against CD164 (WS-80160, clone N6B6 and WS-80162, clone 67D2), as well as two reagents with previously unknown specificities that were identified as CD13 (WS-80274, clone A8) and CD107a (WS-80280, clone E63-880). The activation patterns followed either the “CD203c-like” or “CD63-like” activation profile. The CD203c profile is characterized by a rapid and significant upregulation (of CD13, CD164, and CD203c), reaching maximum levels after 5- 15 min of stimulation. The phosphoinositide-3-kinase (PI3K)-specific inhibitor wortmannin inhibited the upregulation of these markers whereas 12-O-tetradecanoyl-phorbol-13-acetate (TPA) induced a rapid and FcεRI-independent upregulation within 1-2 min. In the CD63 profile, maximum upregulation (of CD63 and CD107a) was detected only after 20-40 min, and upregulation by TPA reached maximum levels after 60 min. In summary, our data identify CD13, CD107a, and CD164 as novel basophil-activation antigens. Based on time kinetics of upregulation, we hypothesize that molecules of the “CD203c group” and the “CD63 group” are linked to two different mechanisms of basophil activation.

关键词： CD203c CD164 CD63 CD107a basophil activation basophil marker.

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Microstructure, hardness evolution and thermal stability of binary Al-7Mg alloy processed by ECAP with intermediate annealing

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Transactions of Nonferrous Metals Society of China 2014年第7期24卷 2301-2306页

作者：查敏李彦军 Ragnvald MATHIESEN Ruben BjRGE hans j. ROVEN Department of Materials Science and Engineering Norwegian University of Science and Technology Department of Physics Norwegian University of Science and Technology Center for Advanced Materials Qatar University

A binary Al-7Mg alloy was processed by equal channel angular pressing （ECAP） at room temperature via route Bc, combined with intermediate annealing. After 6 passes, a high hardness of HV218 is achieved. Transmission electron microscopy （TEM） observations demonstrate that ECAP leads to a significant grain refinement and ultrafine grains down to 100-200 nm are developed after 5 or 6 passes. X-ray diffraction （XRD） analysis indicates that the major part of Mg atoms are in solid solution in the deformed material, and the possible strengthening effect of Mg solute atom clusters or precipitates is neglected. The high hardness of the 6 pass-treated materials comes mainly from grain boundary strengthening, which contributes about 41% to the total strength, while dislocations and Mg solid solution contribute about 24% and 35% to the remaining strength, respectively. Also, the thermal stability of this severely deformed material was investigated by hardness measurements. The material is relatively stable when annealed at a temperature lower than 250 ℃, while annealing at 300 ℃ leads to a rapid softening of the material.

关键词： Al-Mg alloys equal channel angular pressing (ECAP) as-deformed microstructure hardness evolution strengthening thermal stability

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Significance of scintigraphy for the localisation of obscure gastrointestinal bleedings

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World journal of Gastroenterology 2008年第32期14卷 5015-5019页

作者： Tanja Brünnler Frank Klebl Sascha Mundorff Christoph Eilles Michael Reng hans von Korn jürgen Schlmerich julia Langgartner Stefan Grüne Department of Internal Medicine I University of Regensburg Department of Surgery Hospital Neumarkt Department of Nuclear Medicine University of Regensburg Department of Internal Medicine Hospital Bogen Department of Internal Medicine II Hospital Hetzelstift

AIM： To determine the role of scintigraphy in patients with gastrointestinal （GI） bleeding of unknown Iocalisation. METHODS： We performed retrospective analyses on 92 patients receiving scintigraphies from 1993 to 2000 in the University of Regensburg hospital, which were done for Iocalisation of GI bleeding as a diagnostic step after an unsuccessful endoscopy. In addition to the scintigraphies, further diagnostic steps such as endoscopy, angiography or operations were performed. In some of the scintigraphies with negative results, a provocation test for bleeding with heparinisation was carried out. RESULTS： 73% of all scintigraphies showed a positive result. In 4.5% of the positive results, the source was located in the stomach, in 37% the source was the small bowel, in 25% the source was the right colon, in 4.5% the source was the left colon, and in 20% no clear Iocalisation was possible. Only 4% of all scintigraphies were false positive. A reliable positive scintigraphy was independent of the age of the examined patient. A provocation test for bleeding with heparin resulted in an additional 46% of positive scintigraphies with a reliable Iocalisation in primary negative scintigraphies. CONCLUSION- Our results show that scintigraphy and scintigraphy with heparin provocation tests are reliable procedures. They enable a reliable Iocalisation in about half of the obscure GI-bleeding cases. Scintigraphy is superior to angiography in locating a bleeding. It is shown that even in the age of video capsule endoscopy and double-balloon enteroscopy, scintigraphy provides a reliable and directed localization of GI bleeding and offers carefully targeted guidance for other procedures.

关键词： Gastrointestinal bleeding Scintigraphy Localisation Angiography

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Voltage rise mitigation for solar PV integration at LV grids Studies from ***

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journal of Modern Power Systems and Clean Energy 2015年第3期3卷 411-421页

作者： Guangya YANG Francesco MARRA Miguel jUAMPEREZ Søren Bækhøj KjÆR Seyedmostafa HASHEMI jacobØSTERGAARD hans Henrik IPSEN Kenn H.B.FREDERIKSEN Centre for Electric Power and Energy Department of Electrical EngineeringTechnical University of Denmark2800 Kgs.LyngbyDenmark Danfoss Solar Inverter A/S 6430 NordborgDenmark Østkraft 3700 RønneDenmark FREDERIKSEN Energimidt8600 SilkeborgDenmark

Solar energy from photovoltaic(PV)is among the fastest developing renewable energy systems *** by governmental subsidies and technological development,Europe has seen a fast expansion of solar PV in the last few *** the installed PV plants,most of them are situated at the distribution systems and bring various operational challenges such as power quality and power flow *** paper discusses the modelling requirements for PV system integration studies,as well as the possible techniques for voltage rise mitigation at low voltage(LV)grids for increasing PV *** solutions are listed and preliminary results are presented.

关键词： Solar photovoltaic(PV) Voltage rise Virtual power plants Ancillary services

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带燃料电池增程器的插电式混合动力电动车(英文)

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同济大学学报（自然科学版） 2022年第S1期50卷 170-175页

作者： Tobias STOLL hans-jürgen BERNER Michael BARGENDE AndréCasal KULZER Holger ENTENMANN Marc REICHENBACHER 斯图加特汽车工程与车辆发动机研究所(FKFS) 德国斯图加特70569 斯图加特大学汽车工程学院(IFS) 德国斯图加特70569

由于日益严格的立法和公司面临的巨大社会压力,城市配送运输车队的电气化变得越来越重要。本文介绍了一款最大总重为7.5 t的3.5 t改装轻型车。该车有一个串行混合电动动力系统,最大电力牵引功率为150 kW,还有一个60 kW的燃料电池增程器... 详细信息

由于日益严格的立法和公司面临的巨大社会压力,城市配送运输车队的电气化变得越来越重要。本文介绍了一款最大总重为7.5 t的3.5 t改装轻型车。该车有一个串行混合电动动力系统,最大电力牵引功率为150 kW,还有一个60 kW的燃料电池增程器。该车使用一个46 kW·h的电池,平均电压水平为400 V,从而使全电动范围达到120 km。电力驱动由一个感应电机和一个锂锰铁磷酸盐(LMFP)电池以及一个2速变速箱实现。燃料电池系统有一个容量为95 L的燃料箱,压力水平为70 bar,这使得车辆的总里程达400 km。一个质子交换膜(PEM)用于直接使用氢气,其额定功率为1.0 W/cm^(2)。质子交换膜被集成在一个60 kW的燃料电池系统中,用于车辆的车载能源生产。对于空气通道,燃料电池系统有一个电动辅助涡轮增压器,以利用废气的热能。吸入空气的加湿是通过一个水喷射器实现的,该喷射器使用来自排气除湿的水。氢气路径是通过一个喷射器电路和一个用于处理氮气的清洗阀实现的。在下文中,将介绍燃料电池系统的设计和控制。最后,介绍了燃料电池系统运行过程中最重要的影响。

关键词：插电式混合动力燃料电池城市配送运输

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