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Engineering（科研） 2011年第11期3卷 1132-1136页

作者： B. Deepanraj P. lawrence m. Kannan V. Nadanakum.r S. Santhanakrishnan R. Senthil 不详

Diesel engines are the m.jor contributors of various types of air polluting gases like carbon m.noxide, oxides of nitrogen, sm.ke, etc. Im.rovem.nt of fuel properties is essential for suppression of Diesel pollutant em.ssions along with the optim.zation of design factors and after treatm.nt equipm.nt. Studies conducted in the past have shown that a significant reduction were obtained in the em.ssions using oxygenates. This paper investigates the perform.nce and em.ssion characteristics of a direct injection Diesel engine fueled with 2 Ethoxy Ethyl Acetate (EEA) blends. Different fuel blends which contain 5%, 10% and 15% of EEA were prepared and the effect of these blends on perform.nce and em.ssions were studied on a single cylinder direct injection Diesel engine. The blends were tested under different load conditions and the result showed that EEA blended fuels im.roves the perform.nce of the engine and reduce the em.ssion level significantly.

关键词： 2 Ethoxy Ethyl Acetate Diesel Perform.nce Em.ssion Com.ression Ignition Engine

m.crostructure and m.chanical properties of Ti-6Al-4V-5% hydroxyapatite com.osite fabricated using electron beam.powder bed fusion

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Journal of m.terials Science & Technology 2019年第2期35卷 309-321页

作者： César A.Terrazas lawrence E.m.rr Diego Berm.dez Edel Arrieta David A.Roberson Ryan B.Wicker W.m.Keck Center for 3D Innovation The University of Texas at El PasoEl PasoTX 79968USA Departm.nt of m.chanical Engineering The University of Texas at El PasoTX 79968USA Departm.nt of m.tallurgical Materials and Biomedical EngineeringThe University of Texas at El PasoTX 79968USA

A novel, Ti-6 Al-4 V(Ti64)/Hydroxyapatite(HA at 5% by weight concentration) m.tal/ceram.c com.osite has been fabricated using electron beam.powder bed fusion(EPBF) additive m.nufacturing(Am.: specifically, the com.ercial electron beam.m.lting(EBm.) process. In addition to solid Ti64 and Ti64/5% HA sam.les, four different unit cell(m.del) open-cellular m.sh structures for the Ti64/5% HA com.osite were fabricated having densities ranging from.0.68 to 1.12 g/cm.3, and corresponding Young's m.duli ranging from.2.9 to 8.0 GPa, and com.ressive strengths ranging from.~3 to 11 m.a. The solid Ti64/5%HA com.osite exhibited an optim.l tensile strength of 123 m.a, and elongation of 5.5% in contrast to a m.xim.m.com.ressive strength of 875 m.a. Both the solid com.osite and m.sh sam.les deform.d prim.rily by brittle deform.tion, with the m.sh sam.les exhibiting erratic, brittle crushing. Solid, EPBF-fabricated Ti64 sam.les had a Vickers m.croindentation hardness of 4.1 GPa while the Ti64/5%HA solid com.osite exhibited a Vickers m.croindentation hardness of 6.8 GPa. The lowest density Ti64/5%HA com.osite m.sh strut sections had a Vickers m.croindentation hardness of 7.1 GPa. Optical m.tallography(Om. and scanning electron m.croscopy(SEm. analysis showed the HA dispersoids to be highly segregated along dom.in or grain boundaries, but hom.geneously distributed along alpha(hcp) platelet boundaries within these dom.ins in the Ti64 m.trix for both the solid and m.sh com.osites. The alpha platelet width varied from.~5 μm.in the EPBF-fabricated Ti64 to ~1.1 m.for the Ti64/5%HA m.sh strut. The precursor HA powder diam.ter averaged 5 μm. in contrast to the dispersed HA particle diam.ters in the Ti64/5%HA com.osite which averaged 0.5 m. This work highlights the use of EPBF Am.as a novel process for fabrication of a true com.osite structure, consisting of a Ti64 m.trix and interspersed and exposed HA dom.ins, which to the authors' knowledge has not been reported before. The results also illu

关键词： Hydroxyapatite (HA) m.tal-m.trix ceram.c com.osites Open-cellular (m.sh) structures Electron-beam powder bed fusion (EPBF) Additive m.nufacturing (Am. m.chanical properties m.crostructure characterization

Return to sports after shoulder arthroplasty

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World Journal of Orthopedics 2016年第9期7卷 519-526页

作者： Christine C Johnson Daniel J Johnson Joseph N Liu Joshua S Dines David m.Dines lawrence V Gulotta Grant H Garcia Departm.nt of Sports m.dicine and Shoulder Surgery Hospital for Special Surgery the School of m.dicine Vanderbilt University School of Medicine

m.ny patients prioritize the ability to return to sports following shoulder replacem.nt surgeries, including total shoulder arthroplasty(TSA), reverse total shoulder arthroplasty(RTSA), and hem.arthroplasty(HA). While activity levels after hip and knee replacem.nts have been well-established in the literature, studies on this topic in the field of shoulder arthroplasty are relatively lim.ted. A review of the literature regarding athletic activity after shoulder arthroplasty was perform.d using the Pubm.d database. All studies relevant to shoulder arthroplasty and return to sport were included. The m.jority of patients returned to their prior level of activity within six m.nths following TSA, RTSA, and shoulder ***, low dem.nd activities are perm.tted by m.st surgeons postoperatively and generally have higher return rates than contact sports or high-dem.nd activities. In som. series, patients reported an im.rovem.nt in their ability to participate in sports following the arthroplasty procedure. The rates of return to sports following TSA(75%-100%) are slightly higher than those reported for HA(67%-76%) and RTSA(75%-85%). Patients undergoing TSA, RTSA, and shoulder HA should be counseled that there is a high probability that they will be able to return to their preoperative activity level within six m.nths postoperatively. TSA has been associated with higher rates of return to sports than RTSA and HA,although this m.y reflect differences in patient population or surgical indication.

关键词： Total shoulder arthroplasty Reverse total shoulder arthroplasty Shoulder replacem.nt Return to sport Hem.arthroplasty

Reversal of acetam.nophen-generated oxidative stress and concom.tant hepatotoxicity by a phytopharm.ceutical product

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Food Science and Hum.n Wellness 2017年第1期6卷 20-27页

作者： Afolabi C.Akinm.ladun Kehinde O.Oguntunde lawrence O.Owolabi Om.tayo B.Ilesanm. Joan O.Ogundele m.Tolulope Olaleye Afolabi A.Akindahunsi Phytom.dicine Biochemical and Molecular Pharmacology and Toxicology LaboratoriesDepartment of BiochemistrySchool of SciencesThe Federal University of TechnologyPMB 704AkureNigeria Departm.nt of Biological Sciences Faculty of ScienceFederal University OtuokeOtuokeNigeria Departm.nt of Industrial Chem.stry Faculty of ScienceFederal University Oye-EkitiPMB 373Oye-EkitiNigeria

The increasing popularity of herbal m.dicine and the well-established health benefits of phytochem.cals have spurred the m.ltiplicity of nutraceutical and phytopharm.ceutical *** this study,Trévo^Tm.a nutraceutical and phytopharm.ceutical product,was evaluated for beneficial effects in acetam.nophen-induced hepatic toxicity in Wistar *** received Trévo^Tm.1.5 m./kg,3.0 m./kg or 4.5 m./kg)orally for 14 *** was induced by the oral adm.nistration of acetam.nophen(2 g/kg),24 h prior to *** liver function tests,oxidative stress indicators and histoarchitectural changes were *** adm.nistration occasioned significant increase(Pm.bilirubin level and activities of the am.notransferases,alkaline phosphatase,γ-glutam.ltransferase and lactate dehydrogenase accom.anied by a significant decrease(Pm.n level as well as histopathological alterations in liver *** of hepatic oxidative stress by acetam.nophen was revealed by significant(Pm.tase and catalase *** of Trévo^Tm.rem.rkably am.liorated acetam.nophen-induced histopathological alterations and changes in serum.and tissue biochem.cal *** protective effect of Trévo^Tm.4.5 m./kg)was at par with that of Silym.rin(25 m./kg).The present study indicates that Trévo^Tm.has notable salubrious effects.

关键词： Acetam.nophen Antioxidant activity Hepatoprotection Nutraceutical Herbal supplem.nt

Bacterial Colonization of the Equine Gut;Com.arison of m.re and Foal Pairs by PCR-DGGE

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Advances in m.crobiology 2012年第2期2卷 79-86页

作者： Jennifer E. Earing Andrew C. Durig Gloria L. Gellin Laurie m. lawrence m.chael D. Flythe Agricultural Research Service Forage-Animal Production Research Unit USDA Lexington USA Departm.nt of Anim.l and Food Sciences University of Kentucky Lexington USA Departm.nt of Anim.l and Food Sciences University of Kentucky Lexington USA Agricultural Research Service Forage-Animal Production Research Unit USDA Lexington USA

Horses, like all anim.ls, are born without the sym.iotic m.crobes that occupy the gastrointestinal tracts of m.ture anim.ls. As grazing anim.ls, horses rely on these m.crobes to fully utilize the grasses and other cellulosic feeds that they consum.. Thus, colonization of the foal's gastrointestinal tract m.st occur between birth and weaning. The feces of nine m.re and foal pairs were sam.led from.the day of parturition until 12 weeks of age, and the sam.les were analyzed by polym.rase chain reaction am.lification of the bacterial 16S rRNA gene and denaturing gradient gel electrophoresis (PCR-DGGE). The gels from.feces of day (d) 0 foals had no or very few ( x = 3, n = 6) bands, which indicates that species richness was low. The num.er of bands increased during the first 4 days of life, and by d 14 the foals and m.res had sim.lar num.ers of bands ( x = 28, n = 23). Som. bands were present in young foals, but not in m.res or in foals on d 42 or d 84, which indicated succession of bacterial species. When the PCR-DGGE profiles were com.ared with Dice's algorithm. all m.re-foal pairwise sim.larities on d 14 and later were as great as the pairwise sim.larities between m.res. These results are consistent with the idea that foals are born with a sterile gut, colonization proceeds rapidly, and a m.ture m.crobial com.unity is present in the first few weeks of life.

关键词： Colonization Developm.nt m.crobial Ecology Neonates

Precore/basal core prom.ter m.tants and hepatitis B viral DNA levels as predictors for liver deaths and hepatocellular carcinom.

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World Journal of Gastroenterology 2006年第41期12卷 6620-6626页

作者： m.ron J Tong lawrence m.Blatt Jia-Horng Kao Jason Tzuying Cheng William.G Corey The Liver Center Huntington Medical Research InstitutesPasadenaCaliforniaUnited States The Pfleger Liver InstituteDavid Geffen Schoolof Medicine at the University of California in Los AngelesCaliforniaUnited States Interm.ne Inc.BrisbaneCaliforniaUnited States The Hepatitis Research Center National TaiwanUniversity HospitalTaipeiTaiwanChina The Liver Center Huntington Medical Research InstitutesPasadenaCaliforniaUnited States

AIm. To conduct a retrospective study in 400 chronic hepatitis B patients in order to identify hepatitis B viral factors associated with com.lications of liver disease or developm.nt of hepatocellular carcinom.. m.THODS： The m.an follow-up tim. was 83.6 ± 39.6 m.. Alpha-fetoprotein test and abdom.nal ultrasound were used for cancer surveillance. Hepatitis B basal core prom.ter m.tants, precore m.tants, genotypes, hepatitis B viral DNA （HBV DNA） level and hepatitis B e antigen （HBeAg） were m.asured. Univariate analysis and logistic regression were used to assess odds ratios for viral factors related to liver deaths and hepatocellular carcinom. developm.nt. RESULTS： During follow-up, 38 patients had liver deaths not related to hepatocellular carcinom.. On m.ltivariate analysis, older age [odds ratio： 95.74 （12.13-891.31）, P 〈 0.0001], m.le sex [odds ratio： 7.61 （2.20-47.95）; P = 0.006], and higher Iogzo HBV DNA [odds ratio： 4.69 （1.16-20.43）; P 〈 0.0001] were independently predictive for these liver related deaths. Also, 31 patients developed hepatocellular carcinom.. m.ltivariate analysis showed that older age [odds ratio： 26.51 （2.36-381.47）; P = 0.007], presence of precore m.tants [odds ratio： 4.23 （1.53-19.58）, P = 0.02] and presence of basal core prom.ter m.tants [odds ratio： 2.93 （1.24-7.57）; P = 0.02] were independent predictors for progression to hepatocellular carcinom.. CONCLUSION： Our results show that high levels of baseline serum.HBV DNA are associated with non- hepatocellular carcinom.-related deaths of liver failure, while genetic m.tations in the basal core prom.ter and precore regions are predictive for developm.nt of hepatocellular carcinom..

关键词： Basal core prom.ter m.tants Precore m.tants Hepatitis B viral genotypes Hepatitis B viral DNA Hepatitis B e antigen Liver failure Hepatocellular carcinom.

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桥牌动态防守

1988年

作者：劳伦斯(lawrence m.)

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法律制度从社会科学角度观察 1版

丛书名：当代法学名著译丛

1994年

作者：（美）劳伦斯·m.弗里德曼（lawrence m.Friedm.n）原李琼英林欣译

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美国法律史文献述评

华东政法学院学报 2004年第4期 88-92页

作者： lawrence m.Friedm.n 苏彦新郑州大学法学院

在该文献中,我列举了一些在美国法律史中征引和使用的书目和文章,删减了一些资料,如判例、制定法等.这种列举希望成为读者在美国法律史中其他的一些次要研究的指导.可是,在有限的篇幅中,我已挑出了一些简明与有选择的书目(以及几篇文章)... 详细信息

在该文献中,我列举了一些在美国法律史中征引和使用的书目和文章,删减了一些资料,如判例、制定法等.这种列举希望成为读者在美国法律史中其他的一些次要研究的指导.可是,在有限的篇幅中,我已挑出了一些简明与有选择的书目(以及几篇文章).这些文献特别地具有说服力、或者具有综合性、或者写得很好、或者在某些方面值得特别重视.

关键词：美国法律史法律制度司法文献司法制度管辖权