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| 1 | Laser additive manufacturing of Zn porous scaffolds: Shielding gas flow, surface quality and densification显示文摘Zn based metals have exhibited promising prospects as a structural material for biodegradable applications. Pure Zn porous scaffolds were produced by laser powder bed fusion(LPBF) based on data files of designing and CT scanning. Massive Zn evaporation during laser melting largely influenced the formation quality during LPBF of Zn metal. The metal vapor in processing chamber was blown off and suctioned out efficiently by an optimized gas circulation system. Numerical analysis was used to design and testify the performance of gas flow. The surface of scaffolds was covered with numerous particles in different sizes. Processing pores occurred near the outline contour of struts. The average grain size in width was8.5m, and the hardness was 43.8 HV. Chemical plus electrochemical polishing obtained uniform and smooth surface without processing pores, but the diameter of struts reduced to 250 αm from the design value 300 m. The poor surface quality and processing pores were resulted by the splashing particles included spatters and powders due to the recoil force of evaporation, and the horizontal movement of liquid metal due to overheating and wetting. The insufficient melting at the outline contour combined with good wetting of Zn liquid metal further increased the surface roughness and processing pores. | Peng Wen Yu Qin Yanzhe Chen Maximilian Voshage Lucas Jauer Reinhart Poprawe Johannes Henrich Schleifenbaum | 2019 | Journal of Materials Science & Technology2019,35,2: | 9 |
| 2 | Additively manufactured pure zinc porous scaffolds for critical-sized bone defects of rabbit femur显示文摘Additive manufacturing has received attention for the fabrication of medical implants that have customized and complicated structures.Biodegradable Zn metals are revolutionary materials for orthopedic implants.In this study,pure Zn porous scaffolds with diamond structures were fabricated using customized laser powder bed fusion(L-PBF)technology.First,the mechanical properties,corrosion behavior,and biocompatibility of the pure Zn porous scaffolds were characterized in vitro.The scaffolds were then implanted into the rabbit femur critical-size bone defect model for 24 weeks.The results showed that the pure Zn porous scaffolds had compressive strength and rigidity comparable to those of cancellous bone,as well as relatively suitable degradation rates for bone regeneration.A benign host response was observed using hematoxylin and eosin(HE)staining of the heart,liver,spleen,lungs,and kidneys.Moreover,the pure Zn porous scaffold showed good biocompatibility and osteogenic promotion ability in vivo.This study showed that pure Zn porous scaffolds with customized structures fabricated using L-PBF represent a promising biodegradable solution for treating large bone defects. | Dandan Xia Yu Qin Hui Guo Peng Wen Hong Lin Maximilian Voshage Johannes Henrich Schleifenbaum Yan Cheng Yufeng Zheng | 2023 | Bioactive Materials2023,,1: | 2 |
| 3 | 网络与组织评价:多层面视角显示文摘网络研究的中心论点是:行动者是嵌入在为行为提供各种机会和约束的相互关联的社会关系网络中的。我们强调考查跨层次网络现象的重要性,通过人际层面、单位间层面和组织间层面的分析,回顾了网络的前因与后果研究,评价了近期理论和实证研究的趋势,并指明了未来研究的方向。 | Daniel J.Brass Joseph Galaskiewiez Henrich R.Greve Wenpin Tsai 汪旭晖 杨宜苗 | 2011 | 管理世界2011,27,9: | 2 |
| 4 | The First Prospective Controlled Trial Comparing Wireless Capsule Endoscopy with Push Enteroscopy in Chronic Gastrointestinal Bleeding显示文摘 | C. Ell S. Remke A. May L. Helou R. Henrich G. Mayer | 2002 | Endoscopy2002,,09: | 2 |
| 5 | Management der postpartalen Blutung (PPH)显示文摘 | D. Schlembach M.G. M?rtl T. Girard W. Arzt E. Beinder C. Brezinka K. Chalubinski D. Fries W. Gogarten B.-J. Hackel?er H. Helmer W. Henrich I. H?sli P. Husslein F. Kainer U. Lang G. Pfanner W. Rath E. Schleussner H. Steiner D. Surbek R. Zimmermann | 2014 | Der Anaesthesist2014,,3: | 2 |
| 6 | Local inhibition of matrix metalloproteinases reduced M2 macrophage activity and impeded recovery in spinal cord transected rats after treatment with fibroblast growth factor-1 and nerve grafts显示文摘Alternatively activated macrophages(M2 macrophages) promote central nervous system regeneration. Our previous study demonstrated that treatment with peripheral nerve grafts and fibroblast growth factor-1 recruited more M2 macrophages and improved partial functional recovery in spinal cord transected rats. The migration of macrophages is matrix metalloproteinase(MMP) dependent. We used a general inhibitor of MMPs to influence macrophage migration, and we examined the migration of macrophage populations and changes in spinal function. Rat spinal cords were completely transected at T8, and 5 mm of spinal cord was removed(group T). In group R, spinal cord-transected rats received treatment with fibroblast grow th factor-1 and peripheral nerve grafts. In group RG, rats received the same treatment as group R with the addition of 200 μM GM6001(an MMP inhibitor) to the fibrin mix. We found that MMP-9, but not MMP-2, was upregulated in the graft area of rats in group R. Local application of the MMP inhibitor resulted in a reduction in the ratio of arginase-1(M2 macrophage subset)/inducible nitric oxide synthase-postive cells. When the MMP inhibitor was applied at 8 weeks postoperation, the partial functional recovery observed in group R was lost. This effect was accompanied by a decrease in brain-derived neurotrophic factor levels in the nerve graft. These results suggested that the arginase-1 positive population in spinal cord transected rats is a migratory cell population rather than the phenotypic conversion of early i NOS+ cells and that the migration of the arginase-1+ population could be regulated locally. Simultaneous application of MMP inhibitors or promotion of MMP activity for spinal cord injury needs to be considered if the coadministered treatment involves M2 recruitment. | Chuan-Wen Chiu Wen-Hung Huang Huai-Sheng Kuo May-Jywan Tsai Ching-Jung Chen Meng-Jen Lee Henrich Cheng | 2018 | Neural Regeneration Research2018,13,8: | 2 |
| 7 | Komplikationen nach Hochdosistherapie und autologer Stammzelltransplantation Retrospektive Untersuchung an einem nicht selektionierten Patientenkollektiv显示文摘 | Martin Hoffmann Dirk Henrich Ulrich Hackenberg Dirk Mewes Peter Hellstern Michael Uppenkamp | 2001 | Medizinische Klinik2001,,4: | 2 |
| 8 | Physically based cooling line model to meet growing demands in temperature and flexibility显示文摘 | Henrich Holz R Kneppe G | 1996 | Iron making and Steelmaking1996,23,1: | 1 |
| 9 | Clinical toprgraphy of the proctodeum 显示文摘 | Henrich M | 1980 | Acta Anat1980,106,2: | 1 |
| 10 | Global cerebral ischemic and subsequent selective hypothermia显示文摘 | Horn M Schlote W Henrich HA | 1991 | Acta Neunpathol1991,81,: | 1 |
| 11 | Kinetics of SO2 adsorption on photoexcited t-FeeO3显示文摘 | Toledano D S Henrich V E | 2001 | J Phys Chem B2001,105,: | 1 |
| 12 | A simple computational method for reducing streak artifacts in CT images显示文摘 | Henrich G | 1980 | Computerized Tomography1980,4,: | 1 |
| 13 | Architecture and sediment dynamics of the Mauritania Slide Complex显示文摘 | Henrich R Hanebuth T J J Krastel S | 2008 | Marine and Petroleum Geology2008,25,: | 1 |
| 14 | Peptidase D of Escherichia coli K-12,a metallopeptidase of low substratespecificity 显示文摘 | SCHROEDER U HENRICH B FINK J | 1994 | FEMS Microbiology Letters1994,123,12: | 1 |
| 15 | Clara cell protein 16: A biomarker for detecting secondary respiratory complications in patients with multiple injuries 显示文摘 | Wutzler S Backhaus L Henrich D | 2012 | J Trauma Acute Care Surg2012,73,4: | 1 |
| 16 | Laparoscopic appendectomy in pregnancy显示文摘 | Schmidt SC Henrich W Schmidt M | 2007 | Zentralbl Chir2007,132,2: | 1 |
| 17 | Maternal characteristics and twin gestation outcomes over 10 years: impact of conception methods显示文摘 | Christian Bamberg Christina Fotopoulou Philipp Neissner Torsten Slowinski Joachim W. Dudenhausen Hans Proquitte Christoph Bührer Wolfgang Henrich | 2012 | Fertility and Sterility2012,,1: | 1 |
| 18 | A maternal effect that eliminates pupal diapause in progeny of the flesh fly, Sarcophaga bullata 显示文摘 | Henrich V C Denlinger D L | 1982 | J Insect Physiol1982,8,: | 1 |
| 19 | Interpersonal relatedness, self-definition, and their motivational orientation during adolescence: A heorical and empirical integration显示文摘 | Shahar Golan Henrich Christopher C Blatt Sidney j | 2003 | Developmental Psychology2003,39,3: | 1 |
| 20 | Physically Based Cooling Line Model to Meet Growing Demands in Temperature and Flexibility显示文摘 | Henrich L Holz R Kneppe G | 1996 | Ironmaking and Steelmaking1996,23,1: | 1 |