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i.proved Fracture Toughness of Cryorolled and Room Temperature Rolled 6082 Al Alloys

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Acta Metallurgi.a Si.i.a(Engli.h Letters) 2014年第2期27卷 359-367页

作者： Vi.eet kumar i.V.Si.gh B.K.Mi.hra R.j.yaganthan Department of Mechani.al and i.dustri.l Engi.eeri.g Indian Institute of Technology Department of Metallurgi.al and Materi.ls Engi.eeri.g Indian Institute of Technology

i. the present work, 6082 Al alloy has been rolled to 40% and 70% thi.kness reducti.ns at the cryogeni. and room temperatures for the i.provement i. mechani.al and fracture toughness properti.s. All cryorolled samples are subj.cted to agi.g at di.ferent temperatures, i.e., 140, 160, and 190 ℃ to i.prove the strength, ducti.i.y, and fracture toughness. The mi.rostructures of the cryorolled （CR） and room temperature rolled （RTR） alloy after 40% and 70% thi.kness reducti.ns are characteri.ed by FE-SEM to reveal the modes of fai.ure. The results show that the starti.g bulk Al alloy speci.en i. fractured i. total ducti.e manner, consi.ti.g of well-developed di.ples over the enti.e surface. The mechani.al properti.s and fracture toughness of the 70% CR alloy are found better than 70% RTR alloy due to hi.her di.locati.ns densi.y and formati.n of sub-grai. structures i. the CR alloy.

关键词： 6082 Al alloy Rolli.g Mechani.al properti.s Fracture toughness j.i.tegral Materi.l characteri.ati.n

Sperm moti.i.y i.hi.i.ory effect of the benzene chromatographi. fracti.n of the chloroform extract of the seeds of Cari.a papaya i. langur monkey, Presbyti. entellus entellus

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Asi.n j.urnal of Andrology 2008年第2期10卷 298-306页

作者： nirmal K. Lohi.a Boomi.Mani.annan Shi.ra Goyal Abdul S. Ansari Centre for Advanced Studi.s Department of Zoology University of Rajasthan Jaipur 302004 India

Ai.： To assess the contracepti.e effi.acy of the benzene chromatographi. fracti.n of the chloroform extract of the seeds of Cari.a papaya i. langur monkeys. Methods： The test substance was gi.en p.o. to fi.e monkeys at 50 mg/kg body wei.ht/day for 360 days. Control ani.als （n = 3） recei.ed oli.e oi. as vehi.le. Sperm parameters as per World Health Organi.ati.n standards, sperm functi.nal tests, morphology of testi. and epi.i.ymi., haematology, cli.i.al bi.chemi.try, serum testosterone and li.i.o were evaluated. Followi.g completi.n of 360 days treatment the ani.als were wi.hdrawn from the treatment and the recovery pattern was assessed by semen analysi. and sperm functi.nal tests. Results： Total i.hi.i.i.n of sperm moti.i.y was observed followi.g 60 days of treatment that conti.ued unti. 360 days study peri.d. Sperm count, percent vi.bi.i.y and percent normal spermatozoa showed a drasti. decli.e followi.g 30 days of treatment. Sperm morphology showed predomi.ant mi. pi.ce abnormali.i.s. Sperm functi.nal tests scored i. steri.e range. Hi.tology and ultrastructure of testi. revealed vacuoli.ati.n i. the Sertoli.cells and germ cells. Loss of cytoplasmi. organelles was evi.ent i. spermatocytes and round spermati.s. Hi.tology and ultrastructure of epi.i.ymi. of treated ani.als were comparable to those of control ani.als. Hematologi.al and serum cli.i.al parameters and testosterone levels fluctuated wi.hi. the control range throughout the study peri.d. Recovery was evi.ent followi.g 60--120 days of treatment wi.hdrawal. Conclusi.n- The results suggest that the benzene chro- matographi. fracti.n of the chloroform extract of the seeds of Cari.a papaya shows contracepti.e effi.acy wi.hout adverse toxi.i.y, medi.ted through i.hi.i.i.n of sperm moti.i.y. （Asi.n j.ndro12008 Mar; 10： 298-306）

关键词： male contracepti.n Cari.a papaya seeds sperm moti.i.y i.hi.i.i.n testi. epi.i.ymi. langur monkeys

Management of neglected cervi.al spi.e di.locati.n： a study of si. cases

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Chi.ese j.urnal of Traumatology 2013年第4期16卷 212-215页

作者： Vi.0}y Goni.nirmal Raj.Gopi.athan Vi.hu Kri.hnan Raj.sh kumar Avi.ash kumar Department of Orthopaedi.s Postgraduate Institute ofMedical Education and Research Chandigarh 160012India Department of Orthopedi.s RML Hospital New DelhiIndia

Obj.cti.e： To report a case ser/es of si. neglected cervi.al spi.e di.locati.ns wi.hout neurologi.al defi.i., whi.h were managed operati.ely. Methods： The study was conducted fromAugust 2010 to December 2011 and cases were selected from the out- pati.nt department of Postgraduate i.sti.ute of Medi.al Educati.n and Research, i.di.. The pati.nts were i. the age group of 30 to 50 years. All pati.nts were operated vi. both anteri.r and posteri.r approaches. Results： Duri.g the i.medi.te postoperati.e peri.d, fi.e （83.33%） pati.nts had normal neurologi.al status. One （16.67%） pati.nt who had C5-C6 subluxati.n developed neu- rologi.al defi.i. wi.h sensory loss below C6 level and motor power of 2/5 i. the lower li.b and 3/5 i. the upper li.b below C6 level. Conclusi.n： There i. no role of skull tracti.n i. ne- glected di.tracti.e flexi.n i.j.ri.s to cervi.al spi.e delayed for more than 3 weeks. Posteri.r followed by anteri.r ap- proach saves much ti.e. i. both approaches are to be done i. the same si.ti.g, there i. no need for i.strumentati.n posteri.rly. But i. staged procedure i. planed, posteri.r sta- bi.i.ati.n i. recommended, as there i. a ri.k of deteri.rati.n i. neurologi.al status.

关键词： Cervi.al vertebrae Neck Postoperati.e compli.ati.ns

Early Results of Mi.ral Valve Replacement i. Severe Pulmonary Artery Hypertensi.n—An i.sti.uti.nal Prospecti.e Study

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World j.urnal of Cardi.vascular Surgery 2013年第2期3卷 63-69页

作者： nirmal kumar Prashant Sevta Subodh Satyarthy Saket Agarwal Vi.hal kumar Beti.eri.Deepak kumar Satsangi Department of Cardi.thoraci. and Vascular Surgery Escorts Heart Institute and Research Center New Delhi India Department of Cardi.thoraci. and Vascular Surgery G. B. Pant Hospital New Delhi India

i.troducti.n: i. pati.nts undergoi.g surgery for mi.ral valve replacement (MVR) for valvular heart di.ease, pulmonary artery hypertensi.n (PAH) has been consi.ered a maj.r ri.k factor. i. thi. prospecti.e study, we have studi.d the early hemodynami. changes and post-operati.e outcomes of MVR among pati.nts wi.h severe PAH. Methods: 68 consecuti.e pati.nts who underwent mi.ral valve replacement for severe rheumati. mi.ral valve di.ease wi.h severe PAH (pulmonary artery pressure (PAP) > 50 mmHg) were studi.d prospecti.ely for i.medi.te postoperati.e hemodynami.s and outcomes. The mean age of the pati.nts was 32.1 years. 32 (47.05%) pati.nts had mi.ral stenosi., 13 (19.11%) had mi.ral regurgi.ati.n and 23 (33.82%) had mi.ed lesi.ns. Pati.nts were di.i.ed i.to two groups based on preoperati.e pulmonary artery pressures. i. 56 pati.nts (82.35%, group i. PAP was sub-systemi. or systemi., wi.h a mean of 58.4 mmHg. Twelve pati.nts (17.65%, group i.) had supra-systemi. PAP wi.h a mean of 82.4 mmHg. Results: After mi.ral valve replacement, the PAP and pulmonary vascular resi.tance (PVR) decreased si.ni.i.antly i. group i.to near normal levels. i. group i. also the PAP and PVR decreased si.ni.i.antly but si.ni.i.ant resi.ual PAH remai.ed. Operati.e mortali.y was 3.5% i. group i.and 16.6% i. group i.. Conclusi.ns: MVR i. safe and effecti.e at the presence of severe PAH as long as the PAP i. below or equal to systemi. pressures. Wi.h suprasystemi. PAP, MVR carri.s a hi.h ri.k of mortali.y and the pati.nt conti.ues to have severe PAH i. the postoperati.e peri.d.

关键词： Pulmonary Artery Hypertensi.n Mi.ral Valve Replacement

Mi.ed convecti.n flow i. verti.al channel wi.h boundary condi.i.ns of thi.d ki.d i. presence of heat source/si.k

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Appli.d Mathemati.s and Mechani.s(Engli.h Edi.i.n) 2012年第8期33卷 1015-1034页

作者： j.C.UMAVATHi.j.PRATHAP kumar j.WERi.A SULTANA Department of Mathemati.s Gulbarga UniversityGulbarga 585106KarnatakaIndia

The effects of vi.cous di.si.ati.n and heat source/si.k on fully developed mi.ed convecti.n for the lami.ar flow i. a parallel-plate verti.al channel are i.vesti.ated. The plate exchanges heat wi.h an external flui.. Both condi.i.ns of equal and di.ferent reference temperatures of the external flui. are consi.ered. Fi.st, the si.ple cases of the negli.i.le Bri.kman number or the negli.i.le Grashof number are solved analyti.ally. Then, the combi.ed effects of buoyancy forces and vi.cous di.si.ati.n i. the presence of heat source/si.k are analyzed by a perturbati.n seri.s method vali. for small values of the perturbati.n parameter. To relax the condi.i.ns on the perturbati.n parameter, the veloci.y and temperature fi.lds are solved by usi.g the Runge-Kutta fourth-order method wi.h the shooti.g techni.ue. The veloci.y, temperature, ski. fri.ti.n, and Nusselt num- bers at the plates are di.cussed numeri.ally and presented through graphs.

关键词： mi.ed convecti.n vi.cous flui. perturbati.n method Runge-Kuttashooti.g method heat source/si.k

Pre-Lung transplant reflux testi.g demonstrates hi.h prevalence of gastroesophageal reflux i. cysti. fi.rosi. and reduces chroni. rej.cti.n ri.k

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World j.urnal of Transplantati.n 2023年第4期13卷 138-146页

作者： Wai.Ki. Lo Ryan Flanagan nirmal Sharma Hi.ary j.Goldberg Walter W Chan Di.i.i.n of Gastroenterology Hepatology and EndoscopyBrigham and Women's HospitalHarvard Medical SchoolBostonMA Di.i.i.n of Pulmonary and Cri.i.al Care Medi.i.e Brigham and Women's HospitalHarvard Medical SchoolBostonMA 02115United States

BACKGROUND Gastroesophageal reflux(GER)has been associ.ted wi.h poor outcomes after lung transplantati.n for chroni. lung di.ease,i.cludi.g i.creased ri.k of chroni. *** i. common i. cysti. fi.rosi.(CF),but factors i.fluenci.g the li.eli.ood of pre-transplant pH testi.g,and the i.pact of testi.g on cli.i.al management and transplant outcomes i. pati.nts wi.h CF are *** To evaluate the role of pre-transplant reflux testi.g i. the evaluati.n of lung transplant candi.ates wi.h *** Thi. was a retrospecti.e study from 2007-2019 at a terti.ry medi.al center that i.cluded all pati.nts wi.h CF undergoi.g lung *** wi.h pretransplant anti.reflux surgery were *** characteri.ti.s(age at transplantati.n,gender,race,body mass i.dex),self-reported GER symptoms pri.r to transplantati.n,and pre-transplant cardi.pulmonary testi.g results,were *** testi.g consi.ted of ei.her 24-h pH-or combi.ed multi.hannel i.tralumi.al i.pedance and pH ***-transplant care i.cluded a standard i.munosuppressi.e regi.en,and regular survei.lance bronchoscopy and pulmonary spi.ometry i. accordance wi.h i.sti.uti.nal practi.e as well as i. symptomati. *** pri.ary outcome of chroni. lung allograft dysfuncti.n(CLAD)was defi.ed cli.i.ally and hi.tologi.ally per i.ternati.nal Soci.ty of Heart and Lung Transplantati.n *** analysi. was performed wi.h Fi.her’s exact test to assess di.ferences between cohorts,and ti.e-to-event Cox proporti.nal hazards *** After applyi.g i.clusi.n and exclusi.n cri.eri.,a total of 60 pati.nts were i.cluded i. the *** all CF pati.nts,41(68.3%)completed reflux moni.ori.g as part of pre-lung transplant *** evi.ence of pathologi. reflux,defi.ed as aci. exposure ti.e>4%,was found i. 24 subj.cts,representi.g 58%of the tested *** pati.nts wi.h pre-transplant reflux testi.g were older(35.8 vs 30.1 years,P=0.01)and more commonly reported typi.al

关键词： Cysti. fi.rosi. Gastroesophageal reflux Lung transplantati.n pH moni.ori.g

Expedi.i.us management plan towards di.i.al earth

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i.ternati.nal j.urnal of Di.i.al Earth 2014年第8期7卷 635-649页

作者： Naveen kumar Si.da Aneta j.Florczyk Franci.co j.Lopez-Pelli.er Di.esh Babu i.V Ruben Bej.r F.j.vi.r Zarazaga-Sori. Department of Computer Sci.nce and System Engi.eeri.g University of ZaragozaZaragozaSpain Department of Wood Sci.nce forestry and GeomaticsUniversity LavalSainte-FoyQCCanada

The breakthrough developments i. geospati.l technologi.s and the i.creasi.g avai.abi.i.y of spati.l data make geoi.formati.n a busi.ess and a deci.i.nal element to the ***,i. i. i.portant to have a management plan to factor i. practi.al and feasi.le data sources,i. bui.di.g geo *** authors of thi. paper are moti.ated by the fact that ri.ht data sources could outclass i.-house resources i. vari.us appli.ati.n *** paper outli.es pragmati. cases for the tangi.le benefi.s of the exi.ti.g potenti.l data and expedi.i.us patterns for di.i.al *** work also proposes‘good-enough’soluti.ns based on the pragmati. cases,avai.able li.erature,and the 3D ci.y model developed that could be suffi.i.nt i. contri.i.g the obj.cti.es of the common publi. usage and open busi.ess *** demonstrate thi. approach,the paper encapsulated the low-cost development of vi.tual 3D ci.y model usi.g publi.ly avai.able cadastral data and web servi.es.

关键词： spati.l data sources geo management web servi.es APi. cadastral data

The energeti. relati.nshi. among geoeffecti.e solar flares, associ.ted CMEs and SEPs

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Research i. Astronomy and Astrophysi.s 2013年第8期13卷 978-990页

作者： Ni.a j.Bhatt Raj.al j.i. Arun kumar Awasthi Physi.s Dept C. U. Shah Science College Physi.al Research Laboratory (Dept. of Space Govt. of India)

Maj.r solar erupti.ns （flares, coronal mass ej.cti.ns （CMEs） and solar energeti. parti.les （SEPs）） strongly i.fluence geospace and space weather. Currently, the mechani.m of thei. i.fluence on space weather i. not well understood and requi.es a detai.ed study of the energeti. relati.nshi. among these erupti.e phenomena. From thi. perspecti.e, we i.vesti.ate 30 flares （observed by RHESSi., followed by weak to strong geomagneti. storms. Spectral analysi. of these flares suggests a new power-law relati.nshi. （r - 0.79） between the hard X-ray （HXR） spectral i.dex （before flarepeak） and li.ear speed of the associ.ted CME observed by LASCO/SOHO. For 12 flares whi.h were followed by SEP enhancement near Earth, HXR and SEP spectral analysi. reveals a new scali.g law （r - 0.9） between the hardest X-ray flare spectrum and the hardest SEP spectrum. Furthermore, a strong correlati.n i. obtai.ed between the li.ear speed of the CME and the hardest spectrum of the correspondi.g SEP event （r - 0.96）. We propose that the potenti.lly geoeffecti.e flare and associ.ted CME and SEP are well-connected through a possi.le feedback mechani.m, and should be regarded wi.hi. the framework of a solar erupti.n. Owi.g to thei. space weather effects, these new results wi.l help i.prove our current understandi.g of the Sun-Earth relati.nshi., whi.h i. a maj.r goal of research programs i. heli.physi.s.

关键词： Sun coronal mass ej.cti.ns (CMEs) - Sun flares - Sun parti.le emi.si.n - Sun solar-terrestri.l relati.ns - Sun X-rays

Experi.ental i.vesti.ati.n for machi.abi.i.y aspects of graphene oxi.e/carbon fi.er rei.forced polymer nanocomposi.es and predi.ti.e modeli.g usi.g hybri. approach

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Defence Technology（防务技术） 2021年第5期17卷 1671-1686页

作者： j.gendra kumar Raj.sh kumar Verma Department of Mechani.al Engi.eeri.g Madan Mohan Malaviya University of TechnologyGorakhpur273010India

Thi. arti.le explores the dri.li.g behavi.r of polymer nanocomposi.es rei.forced by Graphene oxi.e/Carbon fi.er usi.g a hybri. method of Grey theory and Pri.ci.al component analysi.(GR-PCA).An onli.e di.i.al dynamometer was employed for the evaluati.n of Thrust Force and *** i.age processi.g techni.ue computes the *** surface methodology(RSM)consi.ers the parameters,namely,dri.li.g speed(S),feed rate(F),Graphene Oxi.e wt.%(G)i. desi.ni.g the experi.entati.n *** component analysi.(PCA)was used to tackle the response pri.ri.y wei.ht duri.g the combi.ati.n of multi.le *** of vari.nce(ANOVA)scruti.i.ed the i.fluence of parameters and i.tended the regressi.n models to predi.t the ***-PCA evaluated the opti.al parametri. setti.g and remarked that feed rate acts as the most predomi.ant *** hi.her feed rate and wt.%of G i. responsi.le for surface damages li.e fi.er pull-out,fi.er fracture and cracks.A si.ni.i.ant i.provement i. dri.li.g responses has been obtai.ed and also vali.ates through confi.matory test and mi.rostructure i.vesti.ati.ns.

关键词： Graphene oxi.e Polymer Carbon fi.er RSM ANOVA GR-PCA