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    题名 作者 年代 出处 被引量
1金属注射成形(MIM)生产工艺与应用概要显示文摘粉末注射成形(PIM)包括金属注射成形(MIM)与陶瓷注射成形(CIM),是一种新兴的零部件制造工艺,其2010年的销售额超过15亿美元。介绍了MIM的市场概况,MIM工艺的发展历史、生产过程和适用材料;并重点介绍了典型MIM零件生产实例。R M German 2015粉末冶金工业2015,25,5:8
2Effects of cellulase and xylanase enzymes mixed with increasing doses of Salix babylonica extract on in vitro rumen gas production kinetics of a mixture of corn silage with concentrate显示文摘An in vitro gas production(GP) technique was used to investigate the effects of combining different doses of Salix babylonica extract(SB) with exogenous fibrolytic enzymes(EZ) based on xylanase(X) and cellulase(C), or their mixture(XC; 1:1 v/v) on in vitro fermentation characteristics of a total mixed ration of corn silage and concentrate mixture(50:50, w/w) as substrate. Four levels of SB(0, 0.6, 1.2 and 1.8 m L g–1 dry matter(DM)) and four supplemental styles of EZ(1 μL g–1 DM; control(no enzymes), X, C and XC(1:1, v/v) were used in a 4×4 factorial arrangement. In vitro GP(m L g–1 DM) were recorded at 2, 4, 6, 8, 10, 12, 24, 36, 48 and 72 h of incubation. After 72 h, the incubation process was stopped and supernatant p H was determined, and then filtered to determine dry matter degradability(DMD). Fermentation parameters, such as the 24 h gas yield(GY24), in vitro organic matter digestibility(OMD), metabolizable energy(ME), short chain fatty acid concentrations(SCFA), and microbial crude protein production(MCP) were also estimated. Results indicated that there was a SB?EZ interaction(P<0.0001) for the asymptotic gas production(b), the rate of gas production(c), GP from 6 to 72 h, GP2(P=0.0095), and GP4(P=0.02). The SB and different combination of enzymes supplementation influenced(P<0.001) in vitro GP parameters after 12 h of incubation; the highest doses of SB(i.e., 1.8 m L g–1 DM), in the absence of any EZ, quadratically increased(P<0.05) the initial delay before GP begins(L) and GP at different incubation times, with lowering b(quadratic effect, P<0.0001) and c(quadratic effect, P<0.0001; linear effect, P=0.0018). The GP was the lowest(P<0.05) when the highest SB level was combined with cellulose. There were SB?EZ interactions(P<0.001) for OMD, ME, the partitioning factor at 72 h of incubation(PF72), GY24, SCFA, MCP(P=0.0143), and p H(P=0.0008). The OMD, ME, GY24 and SCFA with supp lementation of SB extract at 1.8 m L g–1 DM were higher(P<0.001) than the other treatments, however,PF72 was lower(quadratic effect, P=0.0194) than the other levels. Both C and X had no effect(P>0.05) on OMD, p H, ME, GY24, SCFA and MP. The combination of SB with EZ increased(P<0.001) OMD, ME, SCFA, PF72 and GP24, whereas there was no impact on p H. It could be concluded that addition of SB extract, C, and X effectively improved the in vitro rumen fermentation, and the combination of enzyme with SB extract at the level of 1.2 m L g–1 was more effective than the other treatments.Abdelfattah Z M Salem German Buendía-Rodríguez Mona M M Elghandour María A Mariezcurrena Berasain Francisco J Pea Jiménez Alberto B Pliego Juan C V Chagoyán María A Cerrillo Miguel A Rodríguez 2015Journal of Integrative Agriculture2015,14,1:4
3The effects of Spirulina on anemia and immune function in senior citizens显示文摘Anemia and immunological dysfunction(i.e.immunosenescence)are commonly found in older subjects and nutritional approaches are sought to counteract these phenomena.Spirulina is a filamentous and multicellular bule-green alga capable of reducing inflammation and also manifesting antioxidant effects.We hypothesized that Spirulina may ameliorate anemia and immunosenescence in senior citizens with a history of anemia.We enrolled 40 volunteers of both sexes with an age of 50 years or older who had no history of major chronic diseases.Participants took a Spirulina supplementation for 12 weeks and were administered comprehensive dietary questionnaires to determine their nutritional regimen during the study.Complete cell count(CCC)and indoleamine 2,3-dioxygenase(IDO)enzyme activity,as a sign of immune function,were determined at baseline and weeks 6 and 12 of supplementation.Thirty study participants completed the entire study and the data obtained were analyzed.Over the 12-week study period,there was a steady increase in average values of mean corpuscular hemoglobin in subjects of both sexes.In addition,mean corpuscular volume and mean corpuscular hemoglobin concentration also increased in male participants.Older women appeared to benefit more rapidly from Spirulina supplements.Similarly,the majority of subjects manifested increased IDO activity and white blood cell count at 6 and 12 weeks of Spirulina supplementation.Spirulina may ameliorate anemia and immunosenescence in older subjects.We encourage large human studies to determine whether this safe supplement could prove beneficial in randomized clinical trials.Carlo Selmi Patrick SC Leung Laura Fischer Bruce German Chen-Yen Yang Thomas P Kenny Gerry R Cysewski M Eric Gershwin 2011Cellular & Molecular Immunology2011,8,3:2
4Nanophase and superfine cemented carbides processed by powder injection molding显示文摘Yang Mu-Jen M German Randall 1998Int J of Refractory Metals & Hard Materials1998,16,:2
5金属注射成形(MIM)设计与应用指南显示文摘一位设计师对MIM工艺了解越多,采用MIM工艺成功的机会就越大。本文为采用MIM工艺生产零件的最终用户提供了一些需要考虑的、有用的准则。虽然本文是为金属注射成形编写的,但提出的在设计中需要考虑的事项也适用于陶瓷注射成形(CIM)。R M German 韩凤麟 2014粉末冶金技术2014,32,4:2
6Photocatalytic degradation of pentachlorophenol on TiO2 particles: identification of intermediates and mechanisms of reaction 显示文摘GERMAN M HOFFMAN M R 1993Environ Sci Technol1993,27,:1
7Strength predictions for bulk structures fabricated from nanoscale tungsten powders显示文摘German R M Olevsky E 2005International Journal of Refractory Metals and Hard Materials2005,23,1:1
8Solid-state contributions to densification during liquid-phase sintering显示文摘Johnson J L German R M 1996Metal-lurgical Transaction B1996,8,1:1
9Protein aggregation, metals and oxidative stress in neurodegenerative diseases 显示文摘Tabner B J El Agnaf OM German M J 2005Biochem Soc Trans2005,33,5:1
10Photocatalytic degradation of pentachlorophenolon TiO2 particles: identification of intermediates and mechanisms of reaction 显示文摘German M Hoffman M R 1993Environ Sci Technol1993,27,8:1
11Chromatin remodeling, histone modifications and DNA methylation how does it fall together 显示文摘German T M Robertson K D 2002J Cell Biochem2002,87,:1
12Powder injection molding and infiltration sintering of superfine grain W-Cu显示文摘 GERMAN R M 1997International Journal of Powder Metallurgy1997,33,4:1
13A Model for Thermal ProPerties of Liquid-Phase SinteredComposites显示文摘Randall M German 1993Metallurgical TransactionA1993,,:1
14Effect of liquid content on distortion and rearrangement densification of liquid- phase-sintered W-Cu显示文摘Johnson J L Brezovsky J J German R M 2005Metallurgical & Materials Transactions A2005,36,6:1
15The beta cell transcription factors and development of the pancreas显示文摘Sander M German MS 1997J Mol Med1997,75,5:1
16Geochemistry of a hydrothermal sediment core from the OBS vent- field, 21°N East Pacific rise 显示文摘German C R Palmer M Edmond J M 1999Chemical Geology1999,155,:1
17Hypericum extract and hyperforin : memory-enhancing properities in rodents显示文摘Klusa V Germane S Noldner M 2001Phar- macopsychiatry2001,34,1:1
18Importance of particle characteristics in powdcr injection molding显示文摘German R M 1993Reviews in Particulate Materials1993,1,:1
19Technological barriers and opportunities in powder injection moulding显示文摘 1993Powder Metallurgy Int1993,25,4:1
20Accuracy Assessment and Validation of Classified Satellite Imagery of Texas Coastal Wetlands 显示文摘Hinson J M German C D Pulich W J 1994Marine Technology Society Journal1994,,28:1
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