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| 1 | 稀土在硬质合金球形粉末烧结体表面的富集现象显示文摘采用合金粉末烧结体表面观察法研究了稀土在WC Co硬质合金中的作用机理。合金中的稀土分别以混合稀土(以La和Ce为主体成分) Co预合金粉形式和La(NO3)3的丙酮溶液形式在湿磨时直接加入。用扫描电镜和能谱仪对平均粒径小于200μm的2种球形稀土硬质合金粉末烧结体表面进行了观察与分析。研究结果表明:当以混合稀土 Co预合金粉形式加入稀土时,在烧结过程中,合金中的稀土La和Ce在合金粉末烧结体表面产生明显的富集,并与主要来自于烧结炉内气氛中的杂质元素形成了含La,Ce,S,Ca,W,C和O的复杂化合物;当以La(NO3)3形式加入稀土时,在合金粉末烧结体表面不存在La的富集或聚集。稀土的添加形式同时也影响合金粉末烧结体表面硬质相WC与粘结相的比例,当以混合稀土 Co预合金粉末形式加入稀土时,合金粉末烧结体表面粘结相含量较少。因此,稀土的添加形式影响其在硬质合金中的作用机理,当以混合稀土 Co预合金粉形式加入稀土时,合金中的稀土不但具有较强的富集杂质元素的作用,而且还可以阻止合金粉末烧结体表面富粘结相结构的形成。 | 张立 黄伯云 陈述 SCHUBERT W D | 2004 | 中南大学学报(自然科学版)2004，35，5： | 6 |
| 2 | What every gastroenterologist needs to know about common anorectal disorders显示文摘Anorectal complaints are very common and are caused by a variety of mostly benign anorectal disorders.Many anorectal conditions may be successfully treated by primary care physicians in the outpatient setting,but patients tend not to seek medical attention due to embarrassment or fear of cancer.As a result,patients frequently present with advanced disease after experiencing significant decreases in quality of life.A number of patients with anorectal complaints are referred to gastroenterologists.However,gastroenterologists' knowledge and experience in approaching these conditions may not be sufficient.This article can serve as a guide to gastroenterologists to recognize,evaluate,and manage medically or non-surgically common benign anorectal disorders,and to identify when surgical referrals are most prudent.A review of the current literature is performed to evaluate comprehensive clinical pearls and management guidelines for each topic.Topics reviewed include hemorrhoids,anal fissures,anorectal fistulas and abscesses,and pruritus ani. | Moonkyung Cho Schubert Subbaramiah Sridhar Robert R Schade Steven D Wexner | 2009 | World Journal of Gastroenterology2009，15，26： | 5 |
| 3 | 稀土在硬质合金球形粉末烧结体表面富集现象的观察显示文摘采用合金粉末烧结体表面观察法研究了稀土在WC-Co硬质合金中的作用机理。合金中的稀土分别以混合稀土(以La和Ce为主体成分)-Co预合金粉(简称RE-Co预合金粉)形式和La(NO3)3的丙酮溶液形式在湿磨时直接加入。用扫描电镜和能谱仪对平均粒径小于200μm的2种球形稀土硬质合金粉末(简称合金粉末)烧结体表面进行观察与分析,发现:以RE-Co预合金粉形式加入稀土时,在烧结过程中,合金中的稀土La和Ce以及杂质元素在合金粉末烧结体表面产生了明显的富集,形成了含La,Ce,S,Ca,W,C和O的复杂形式的化合物,在稀土富集物中没有检测到Co。以La(NO3)3形式加入稀土,在合金粉末烧结体表面没有检测到La。说明在合金粉末烧结体表面不存在La的富集或聚集。稀土的添加形式同时也影响合金粉末烧结体表面硬质相WC与粘结相的比例,以RE-Co预合金粉末形式加入稀土,合金粉末烧结体表面粘结相含量较少,因此,稀土的添加形式影响其在硬质合金中的作用机理。以RBCo预合金粉形式加入稀土,合金中的稀土不但具有较好的富集合金中杂质元素的作用,而且还可以阻止烧结体表面富粘结相结构的形成。 | 张立 黄伯云 陈述 Schubert W D 吴恩熙 | 2004 | 粉末冶金材料科学与工程2004，9，1： | 2 |
| 4 | Microstructure-mechanical property relationship in hot isostatically pressed alumina and zirconia-toughened alumina 显示文摘 | Shin D W Orr K K Schubert H | 1990 | J Am Ceram Soc1990，73，5： | 2 |
| 5 | General aspects and limits of conventional ultrafine WC powder manufacture and hard metal production显示文摘 | Schubert W D Bock A Lux B | 1995 | Int J Refract Met Hard Mat1995，13，： | 1 |
| 6 | Immunization with glucose-6-phosphate isomerase induces T cell-dependent peripheral polyarthritis in genetically unaltered mice显示文摘 | Maier B Morawietz L | 2004 | J Immunol2004，172，7： | 1 |
| 7 | Hydrogen peroxide mediates amyloid β-protein toxicity显示文摘 | Behl C Davis JB Lesley R Schubert D | 1994 | Cell1994，77，6： | 1 |
| 8 | Management of postoperative complications following esophagectomy显示文摘 | Schubert D Dalicho S Flohr L | | 0，，08： | 1 |
| 9 | Proteasome inhibition interferes with gag polyprotein processing,release,and maturation of HIV-1 and HIV-2显示文摘 | Schubert U Ott D E Chertova E N | 2000 | Proc Nat Acad Sci U S A2000，97，13： | 1 |
| 10 | Clinical practice guidelines for the prevention and treatment of cancer therapy-induced oral and gastrointestinal mucositis显示文摘 | Rubenstein E B Peterson D E Schubert M | 2004 | Cancer2004，100，9： | 1 |
| 11 | Autoantibodies to GPI and creatine kinase in RA显示文摘 | SCHUBERT D SCHMIDT M ZAISS D | 2002 | Nat Immunol2002，3，41： | 1 |
| 12 | Immunization with glueose-6-phosphate isomerase induces T cell-dependent peripheral polyarthritis in genetically unaltered mice显示文摘 | Schubert D Maier B Morawietz L | 2004 | J lmmunol2004，172，7： | 1 |
| 13 | Higher-Bleeding rate in young adults after subarachnoid hemorrhage from giant aneurysms显示文摘 | Rothoerl R D Finken Z T Schubert T | 2006 | NeurosurgRev2006，29，1： | 1 |
| 14 | Autoantibodies to GPI and cre atime Kinase in RA显示文摘 | Schubert D Schmidt M Zaiss D | 2002 | Nat Immunol2002，3，5： | 1 |
| 15 | Surface obserxation of rare earth doped cemented carbide 显示文摘 | ZHANG Li Schubert W D HUANG Bai-yun | 2003 | P/M Science & Technology Briefs2003，5，3： | 1 |
| 16 | The highpathogenicity island is absent in human pathogens of Salmonella enterica subspecies I but present in isolates of subspecies Ⅲ and Ⅵ 显示文摘 | Oelschlaeger TA Zhang D Schubert S | 2003 | J Bacteriol2003，185，3： | 1 |
| 17 | Activin is a nerve cell survival molecule显示文摘 | Schubert D Kimurs H LaCorbiere M | 1990 | Nature1990，344，6269： | 1 |
| 18 | A comprehensive characterization of single-copy T-DNA insertions in the Arabidopsis thaliana genome显示文摘 | Forsbach A Schubert D Lechtenberg B | 2003 | Plant Molecular Biology2003，52，1： | 1 |
| 19 | Cerium and yttrium oxide nanoparticles are neuroproteetive 显示文摘 | Schubert D Darguseh R Raitano J | 2006 | Biochem Biophys Res Commun2006，342，1： | 1 |
| 20 | The induction of HIF-1 reduces astrocyte activation by amyloid beta peptide显示文摘 | Schubert D Soucek T Blouw B | 2009 | Eur J Neurosci2009，29，7： | 1 |
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