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| 1 | Optimizing mechanical property and cytocompatibility of the biodegradable Mg-Zn-Y-Nd alloy by hot extrusion and heat treatment显示文摘The Mg-Zn-Y-Nd alloy is a new type of degradable material for biomedical application. In the present study, Mg-6Zn-1.2Y-0.8Nd alloy was fabricated, and then extrusion and heat treatment were conducted to optimize its mechanical properties and cytocompatibility. The microstructure observation, mechanical property, degradation behavior and cytocompatibility tests were conducted on the Mg-Zn-Y-Nd alloy with three different states: as-cast(alloy C), as-extruded(alloy E) and extruded + heat treated(alloy EH).The results show that alloy C consists of coarse grains and continuous secondary phases. The extrusion process has caused incomplete recrystallization, and results in a mixed grain structure of elongated grains and small equiaxed grains(alloy E). The heat treatment process has promoted the recrystallization and homogenized the grain structure(alloy EH). Both the strength and ductility of the alloy has been improved by extrusion, but the following heat treatment has decreased the strength and increased the ductility.The degradation behavior of the alloy C and E alloys does not show much difference, but improves slightly in alloy EH, because the heat treatment has homogenized the microstructure and released the residual stress in the alloy. The directly and indirectly cell viability tests indicate that alloy EH exhibits the best cytocompatibility, which should be ascribed to its relative uniform degradation and low ion releasing rate. In summary, the combination of hot extrusion and heat treatment could optimize the mechanical property and cytocompatibility of the Mg-Zn-Y-Nd alloy together, which is beneficial for the future application of the alloy. | Yiyuan Kang Beining Du Yueming Li Baojie Wang Liyuan Sheng Longquan Shao Yufeng Zheng Tingfei Xi | 2019 | Journal of Materials Science & Technology2019，35，1： | 8 |
| 2 | Bonfils纤维气管镜用于难以预料的困难气管插管的研究(英文)显示文摘目的 难以预料和失败的困难气管插管是引起麻醉并发症和麻醉病死率的重要因素。本研究探讨Bon fils纤维气管镜用于处理难以预料的困难气管插管的价值。方法 2 1例行体外循环下冠状动脉搭桥术的患者 ,经一名高年资的麻醉医生使用普通咽喉镜两次插管失败后作为研究对象。测定Bonfils纤维气管镜插管的成功率和插管时间 ,同时测定判断困难气管插管的临床指标 :甲颏距离、Mal lampti分类、张口度、寰枕关节的活动度等。结果 除外一个患者第二次插管成功外 ,第一次插管的成功率是 95 %。平均插管时间 (5 0± 2 5 )秒。 | 严敏 Peter H Tonner Jens Scholz Berthold Bein | 2004 | 中华急诊医学杂志2004，13，3： | 8 |
| 3 | 舒芬太尼复合异丙酚麻醉下体外循环冠脉搭桥术患者双频谱指数与熵指数的关系显示文摘目的评价非肌松、深麻醉状态下,双频谱指数(BIS)反映麻醉深度的准确性。方法选择ASAⅢ级的冠脉搭桥术患者59例,麻醉诱导:静脉注射异丙酚2 mg/kg、舒芬太尼1μg/kg、罗库溴铵0.6 mg/kg,术中麻醉维持采用静脉持续输注异丙酚3-4 mg·kg-1·h-1、舒芬太尼1μg·kg-1·h-1。于麻醉诱导前、麻醉诱导开始后1、2、3、4 min、气管插管后即刻、气管插管后1 min、切皮后即刻和劈胸骨后即刻记录BIS、状态熵(SE)和反映熵(RE)。结果与麻醉诱导前相比,麻醉诱导开始后1、2、3、4 min和气管插管后即刻、气管插管后1 min、切皮后即刻及劈胸骨后即刻BIS、SE和RE均下降(P<0.05)。与SE相比,RE在各观察点均升高(P<0.01)。麻醉诱导期间BIS与SE和RE各时间点观察值之间呈明显正相关,r分别为0.898、0.908(P<0.01)。结论在非肌松、深麻醉状态下,BIS对舒芬太尼复合异丙酚静脉麻醉深度的监测不受肌电活动的影响。 | 严敏 戴安卢 Berthold Bein PerterJ Tonner Jens Schloz | 2006 | 中华麻醉学杂志2006，26，10： | 8 |
| 4 | Stability and deactivation of OER electrocatalysts: A review显示文摘Recently, H_(2) has attracted increasing attention as green energy carrier holding the possibility to replace fossil fuel-based energy sources and thereby reduce CO_(2) emissions. Green hydrogen can be generated by water electrolysis using renewable energies like wind and solar power. When it is combusted, only water forms as by-product. However, the efficiency of water electrolysis is hampered by the anodic oxygen evolution reaction(OER) because of the slow kinetics which leads to a high overpotential. Therefore, many catalysts have been developed for OER to facilitate the kinetics and reduce the overpotential. In addition to electrocatalytic activity, the stability of the catalysts is imperative for industrial application and has been intensively studied. In this review, we cover recent findings on the stability and deactivation mechanisms of OER catalysts. We discuss the correlation between OER activity and stability, methodologies and experimental techniques to study the stability and deactivation as well as the deactivation mechanisms, together with factors influencing stability. Furthermore, strategies for stabilizing and regenerating OER catalysts as well as methods to predict stability are summarized. Finally, the review highlights emerging methodologies yet to be explored and future directions of stability studies and the design of highly stable OER catalysts. | Feng Zeng Chalachew Mebrahtu Longfei Liao Anna Katharina Beine Regina Palkovits | 2022 | Journal of Energy Chemistry2022，31，6： | 7 |
| 5 | Challenges and perspectives of covalent organic frameworks for advanced alkali-metal ion batteries显示文摘Covalent organic frameworks(COFs)are a class of porous crystalline polymers that have been widely investigated in various fields,including energy storage,photo/electrocatalysis,drug delivery.The covalent-bond interconnection allows COFs extraordinary chemical and thermal stability,and the porous structure ensures a high ion-diffusion coefficient.These merits compensate for the drawbacks of organic electrodes that are easy to dissolve and have low charge conductivity,and promote the development of novel electrode materials with excellent performance,environmental friendliness,and low price.However,the application of COFs also encountered many problems,such as poor electronic conductivity due to the large band gap.Moreover,in some three-dimensional(3D)COFs and stacked two-dimensional(2D)COFs,the huge crystal structure,aligned ultralong channels,and numerous crystal defects usually impede ion transport,and the large molecular weights of COFs generally decrease the specific capacities.These issues are urgently needed to be solved.Here in this review,we summarize the latest progress,core challenges and coping strategies concerning with the use of COFs in alkali-metal ion batteries,discuss the impact of material structure on energy storage,and propose strategies for the construction of high-performance COF-based electrodes. | Jingyi Xu Yifan Xu Chenling Lai Tingting Xia Beining Zhang Xiaosi Zhou | 2021 | Science China Chemistry2021，64，8： | 5 |
| 6 | Tensile, creep behavior and microstructure evolution of an as-cast Ni-based K417G polycrystalline superalloy显示文摘The Ni-based K417 G superalloy is extensively applied as aeroengine components for its low cost and good mid-temperature(600–900?C) properties. Since used in as-cast state, the comprehensive understanding on its mechanical properties and microstructure evolution is necessary. In the present research,the tensile, creep behavior and microstructure evolution of the as-cast K417 G superalloy under different conditions were investigated. The results exhibit that tensile cracks tend to initiate at MC carbide and γ/γ' eutectic structure and then propagate along grain boundary. As the temperature for tensile tests increases from 21?C to 700?C, the yield strength and ultimate tensile strength of K417 G superalloy decreases slightly, while the elongation to failure decreases greatly because of the intermediate temperature embrittlement. When the temperature rises to 900?C, the yield strength and ultimate tensile strength would decrease significantly. The creep deformation mechanism varies under different testing conditions. At 760?C/645 MPa, the creep cracks initiate at MC carbides and γ/γ' eutectic structures,and propagate transgranularly. While at 900?C/315 MPa and 950?C/235 MPa, the creep cracks initiate at grain boundary and propagate intergranularly. As the creep condition changes from 760?C/645 MPa to 900?C/315 MPa and 950?C/235 MPa, the ? phase starts to raft, which reduces the creep deformation resistance and increases the steady-state deformation rate. | Beining Du Ziyang Hu Liyuan Sheng Chuanyong Cui Jinxia Yang Yufeng Zheng Xiaofeng Sun | 2018 | Journal of Materials Science & Technology2018，34，10： | 4 |
| 7 | Effect of extrusion process on the mechanical and in vitro degradation performance of a biomedical Mg-Zn-Y-Nd alloy显示文摘A new type of biomedical Mg-Zn-Y-Nd alloy was developed and thermal extruded by different processes to investigate the effect of extrusion ratio and extrusion pass on its microstructure,mechanical property and degradation performance.The results show that the increase of extrusion ratio could promote the dynamic recrystallization(DRX)process and led to the coarsening of DRXed grains.While the increase of extrusion pass also contributes to the DRX process but refines the DRXed grains.The simultaneous increasing of extrusion ratio and extrusion pass refines the secondary phases obviously.The increase of extrusion ratio has reduced the tensile strength but improved the elongation of the alloy significantly.However,the increase of extrusion pass could enhance the tensile strength and elongation simultaneously,especially the strength.The degradation performance has been optimized effectively through increasing the extrusion ratio and extrusion pass. | Beining Du Ziyang Hu Jiali Wang Liyuan Sheng Hui Zhao Yufeng Zheng Tingfei Xi | 2020 | Bioactive Materials2020，5，2： | 3 |
| 8 | M5B3 Boride at the Grain Boundary of a Nickel-based Superalloy显示文摘The grain boundary microstructures of a heat-treated Ni-based cast superalloy IN792 were investigated. The results show that M_5B_3 boride precipitates at the grain boundary. A special orientation relationship between M_5B_3 phase and the matrix at one side of the grain boundary is found. At the same time, two M_5B_3 borides with different orientations could co-exist in a single M_5B_3 particle as an intergrowth besides existing alone, thus forming orientation relationship between the two M_5B_3 phases and matrix. This phenomenon could be attributed to the special orientation relationship between M_5B_3 phase and the matrix. | Beining Du Zhiwu Shi Jinxia Yang Zhaokuang Chu Chuanyong Cui Xiaofeng Sun Liyuan Sheng Yufeng Zheng | 2016 | Journal of Materials Science & Technology2016，32，3： | 2 |
| 9 | Postoperative Neurocognitive Dysfunction in Elderly Patients after Xenon versus Propofol Anesthesia for Major Noncardiac Surgery: A Double-blinded Randomized Controlled Pilot Study显示文摘 | Jan H?cker Claudia Stapelfeldt J?rn Leiendecker Patrick Meybohm Robert Hanss Jens Scholz Berthold Bein | 2009 | Anesthesiology2009，，5： | 2 |
| 10 | Procalcitonin (PCT)-guided algorithm reduces length of antibiotic treatment in surgical intensive care patients with severe sepsis: results of a prospective randomized study显示文摘 | S. Schroeder M. Hochreiter T. Koehler A.-M. Schweiger B. Bein F. S. Keck T. Spiegel | 2009 | Langenbeck’s Archives of Surgery2009，，2： | 2 |
| 11 | Evaluation of the alaris auditory evoked potential index as an indicator of anes- thetic depth in preschool children during induction of anesthesia with sevoflurane and remifentanil 显示文摘 | WEBER F BEIN T HOBBHAHN J | 2004 | Anesthesiology2004，101，2： | 1 |
| 12 | Poly(acrylonitrile) chains in zeolite channels: polymerization and pyrolysis 显示文摘 | P ENZEL T BEIN | 1992 | Chem Mater1992，4，： | 1 |
| 13 | Brain Drain and Economic Growth:Theory and Evidence显示文摘 | BEINE M DOCQUIER F RAPOPORT H | 2001 | Journal of Development Economics2001，，64： | 1 |
| 14 | Moderate hypothe rnia in patients with severe head injury : cerebral and extracerebral effects显示文摘 | Metz C Holzscbuh M Bein T | 1996 | J Neurosurg1996，85，4： | 1 |
| 15 | Quantification of murine I FN-γmRNA and protein expression:impact of real-time kinetic RT-PCR using SYBR Green 1 dye显示文摘 | Hein J Schellenberg U Bein G | 2001 | Scand J Immunol2001，54，： | 1 |
| 16 | Preparation of nanosized micro/mesoporous composites via simultaneous synthesis of Beta/MCM-48 phases显示文摘 | P. Proke?ová S. Mintova J. ?ejka T. Bein | 2003 | Microporous and Mesoporous Materials2003，，1： | 1 |
| 17 | Remote ischemic preconditioning regulates HIF-1α levels, apoptosis and inflammation in heart tissue of cardiosurgical patients: a pilot experimental study显示文摘 | Albrecht M Zitta K Bein B | 2013 | Basic Res Cardiol2013，108，1： | 1 |
| 18 | Nanosized SAPO-34 synthesized from colloidal solution显示文摘 | van Heyden H Mintova S Bein T | 2008 | Chem Mater2008，20，： | 1 |
| 19 | Thyfiod surgery according to Endeden-Hotz or dunhill: a comparison of two surgical methods for the treatment of Graves' disease显示文摘 | Muller PE Bein B Robens E | 2001 | Int Surg2001，86，2： | 1 |
| 20 | Quantification of levornidazole and its metabolites in human plasma and urine by ultra-performance liquid chromatography - mass spectrometry显示文摘 | Yuran Cao Miao Zhao Xiaojie Wu Beining Guo Yuancheng Chen Jicheng Yu Guoying Cao Jing Zhang Yaoguo Shi Yingyuan Zhang | 2014 | Journal of Chromatography B2014，，： | 1 |
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