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| 1 | Wettability Modification for Biosurface of Titanium Alloy by Means of Sequential Carburization显示文摘Microporous titanium carbide coating was successfully synthesized on medical grade titanium alloy by using sequentialcarburization.Changes in the surface morphology of titanium alloy occasioned by sequential carburization were characterizedand the wettability characteristics were quantified.Furthermore,the dispersion forces were calculated and discussed.The resultsindicate that sequential carburization is an effective way to modify the wettability of titanium alloy.After the carburization thesurface dispersion force of titanium alloy increased from 76.5×10-3J·m-2 to 105.5×10-3 J·m-2,with an enhancement of37.9 %.Meanwhile the contact angle of titanium alloy decreased from 83° to 71.5°,indicating a significant improvement ofwettability,which is much closer to the optimal water contact angle for cell adhesion of 70°. | Yong Luo~(1,2) Shi-rong Ge~1 Zhong-min Jin~21.Institute of Tribology and Reliability Engineering,School of Material Science and Engineering,China University of Mining and Technology,Xuzhou 221008,P.R China2.Institute of Medical and Biological Engineering,School of Mechanical Engineering,University of Leeds,Leeds LS2 9JT,UK | 2009 | Journal of Bionic Engineering2009，6，3： | 6 |
| 2 | Surface Modification Process by Electrical Discharge Machining with Ti Powder Green Compact Electrode显示文摘This paper describes a new method of surface modification by Electrical Discharge Machining (EDM). By using ordinary EDM machine tool and kerosene fluid, a hard ceramic layer can be created on the workpiece surface with Ti or other compressed powder electrode in a certain condition. This new revolutionary method is called Electrical Discharge Coating (EDC). The process of EDC begins with electrode wear during EDM,then a kind of hard carbide is created through the thermal and chemical reaction between the worn electrode material and the carbon particle decomposed from kerosene fluid under high temperature. The carbide is piled up on a workpiece quickly and becomes a hard layer of ceramic about 20 μm in several minutes. This paper studies the principle and process of EDC systemically by using Ti powder green compact electrode. In order to obtain a layer of compact ceramic film, it is very important to select proper electric pulse parameters, such as pulse width, pulse interval, peak current. Meantime, the electrode materials and its forming mode will effect the machining surface quality greatly. This paper presents a series of experiment results to study the EDC process by adopt different technology parameters. Experiments and analyses show that a compact TiC ceramic layer can be created on the surface of metal workpiece. The hardness of ceramic layer is more 3 times higher than the base body, and the hardness changes gradiently from surface to base body. The method will have a great future because many materials can be easily added to the electrode and then be coated on the workpiece surface. Gearing the parameters ceramic can be created with different thickness. The switch between deposition and removal process is carried out easily by changing the polarity, thus the gear to the thickness and shape of the composite ceramic layer is carried out easily. This kind of composite ceramic layer will be used to deal with the surface of the cutting tools or molds possibly, in order to lengthen their life. It also can be found wide application in the fields of surface repairing and strengthening of the ship or aircraft. | WANG Zhen-long 1, FANG Yu 1, WU Pei-nian 1, ZHAO Wan-sheng 1, CHENG Kai 2 (1. Dept. of Mechanical Engineering, Harbin Institute of Technology, Harbin 150001, China 2. School of Engineering, Leeds Metropolitan University, UK) | 2002 | 厦门大学学报(自然科学版)2002，41，S1： | 4 |
| 3 | Gastric sarcoidosis mimicking irritable bowel syndrome-Cause not association?显示文摘肉状瘤是可以在身体影响任何机关的未知原因论的系统病。胃肠道仅仅很少然而在肝外面被影响。症状可能是非特定的。急躁的肠症候群(IBS ) 是普通诊断。IBS 的识别被罗马 II 标准的使用帮助 - 当器质性病不在时。我们与胃的肉状瘤描述一个病人的第一个盒子与 IBS 介绍了症状,但是随后对抑制免疫力的治疗作出回应。 | John Samuel Leeds Mark Edward McAlindon Eleanor Lorenz Asha Kumari Dube David Surendran Sanders | 2006 | World Journal of Gastroenterology2006，12，29： | 3 |
| 4 | Counting Function Asymptotics and the Weak Weyl-Berry Conjecture for Connected Domains with Fractal Boundaries | Chen Hua (Department of Mathematics,Wuhan University,Wuhan 430072,China)(Email:chenhua@whu,edu.cn)Brian D.Sleeman (School of Mathematics,University of Leeds,Leeds LS2 9JT,England,UK)(Email:bds@amsta.leeds,ac.uk) | 1998 | Acta Mathematica Sinica,English Series1998，14，2： | 3 |
| 5 | Diagnostic accuracy of quantitative EUS elastography for discriminating malignant from benign solid pancreatic masses: a prospective, single-center study显示文摘 | Muhammad F. Dawwas Hatim Taha John S. Leeds Manu K. Nayar Kofi W. Oppong | 2012 | Gastrointestinal Endoscopy2012，，5： | 3 |
| 6 | LPG燃料发动机系统的研制动向显示文摘介绍第一~五代LPG发动机的研制过程和特点,同时叙述了今后可能普及的第六代(火花点燃气缸内直接喷射方式)和第七代(压燃气缸内直接喷射方式)的研制动向。这种发动机的优点之一是低排放,它仅为现行排放法规值欧3的1/10~1/5,也能适应今后更严格的欧4法规值。优点之二为经济性好,其燃料价格为汽油的1/3、柴油的2/3。 | 後藤新一 若狭良治 LeeD 张耀宏 | 2002 | 国外内燃机2002，34，1： | 2 |
| 7 | Anal cancer and intraepithelial neoplasia screening: A review显示文摘This review focuses on the early diagnosis of anal cancerand its precursor lesions through routine screening. A number of risk-stratification strategies as well as screening techniques have been suggested, and currently little consensus exists among national societies. Much of the current clinical rationale for the prevention of anal cancer derives from the similar tumor biology of cervical cancer and the successful use of routine screening to identify cervical cancer and its precursors early in the disease process. It is thought that such a strategy of identifying early anal intraepithelial neoplasia will reduce the incidence of invasive anal cancer. The low prevalence of anal cancer in the general population prevents the use of routine screening. However, routine screening of selected populations has been shown to be a more promising strategy. Potential screening modalities include digital anorectal exam, anal Papanicolaou testing, human papilloma virus co-testing, and high-resolution anoscopy. Additional research associating high-grade dysplasia treatment with anal cancer prevention as well as direct comparisons of screening regimens is necessary to develop further anal cancer screening recommendations. | Ira L Leeds Sandy H Fang | 2016 | World Journal of Gastrointestinal Surgery2016，8，1： | 2 |
| 8 | Particle Size Distribution,Powder Agglomerates and Their Effects on Sinterability of Ultrafine Alumina Powders显示文摘An intensive study of the particle size distribution of four commercial ultrafine alumina powders to obtain information about the powder agglomeration and relate them to the compactibility and the sinterability has been made. | Renjie ZENG (Dept. of Materials Science, University of Xiamen, Xiamen 361005, China) B.Rand (Dept.of Materials, University of Leeds, Leeds LS2 9JT, England) | 2000 | Journal of Materials Science & Technology2000，16，4： | 2 |
| 9 | Downregulation of 4-coumarate: CoAlig-ase(4CL) in arabidopsis effecton lignin composition and implication for the control of monlignol biosynthesis 显示文摘 | Leed Meyer K Chapple C | 1997 | Plant Cell1997，9，： | 1 |
| 10 | Instability of the distal tibiofibular syndesmosis after bimalleolar and trimalleolar ankle fractures显示文摘 | Leeds HC Ehrlich MG | 1984 | J Bone Joint Sury(Am)1984，66，4： | 1 |
| 11 | Characterization of benign and metastatic vertebral compression fractures with quantitative diffusion MR Imaging显示文摘 | Zhou XJ Leeds NE Mckinnon GC | 2002 | AJNR2002，23，1： | 1 |
| 12 | Ethylether fraction of Gastrodia elataBlume protects amyloid β peptide-induced cell deat显示文摘 | Kim G J MoonK D LeeD S | 2003 | JEthnopharmacol2003，84，1： | 1 |
| 13 | The natural history of group B streptococcal colonization in the pregnant women and her offsing Part Ⅰ, colonization studies显示文摘 | Yow MD Leeds LJ Thompoon PK | 1998 | Am J Obstet Gynecol1998，137，： | 1 |
| 14 | Neurotrophins protect against cytosine arabinoside-induced apoptosis of immature rat cerebellar neurons显示文摘 | LEEDS P LENG Y CHALECKA-FRANASZEK E | 2005 | J Neurochem Int2005，46，1： | 1 |
| 15 | b Amyloid peptide induced death of PC12 cells and cerebellar granule cell neurons is inhibited by long term lithium treatment显示文摘 | Huafeng Wei Peter R Leeds Yanning Qian | 2000 | European Journal of Pharmacology2000，392，2： | 1 |
| 16 | Insulin-like growth factor (IGF)-binding protein-6 inhibits IGF-II-induced but not basal proliferation and adhesion of L1M 1215 colon cancer cells 显示文摘 | Leng S L Leeding K S Whitehead R H | 2001 | Molecular and Cellular Endocrinology2001，174，12： | 1 |
| 17 | Instability of the distaltibiofibular syndesmosis after bimalleolar and trimalleolar ankle fractures显示文摘 | Leeds HC | 1984 | J Bone Joint Surg Am1984，66，4： | 1 |
| 18 | Epidemiologic characteristics of cytomegalovirus infection in mothers and their infants显示文摘 | Yow MD Williamson DW Leeds LJ | 1988 | Am J Obstet Gynecol1988，158，5： | 1 |
| 19 | Constraints of seed bank species composition and water depth for restoring vegetation in the Florida everglades显示文摘 | SMITH S M CROMICS M C LEEDS P V | 2002 | USA Restoration Ecol2002，10，： | 1 |
| 20 | Roles of insulin-like growth factor (IGF) receptors and IGF-binding proteins in IOF-II-induced proliferation and differentiation of L6AI rat myoblasts 显示文摘 | Bach L A Salerni IL Leeding K S | 1995 | Endocrinology1995，136，： | 1 |
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