检索结果-南通市图书馆

Nonlinear.thr.e-dimensional str.tched flow of an Oldr.yd-b.fluid with convective condition, ther.al r.diation, and mixed convection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2017年第7期38卷 969-980页

作者： b. MAHANTHEsH b. J. GIr.EsHA s.A. sHEHZAD F.M. Ab.AsI r. s. r. GOr.A Depar.ment of Mathematics Christ University Bangalore 560029 Karnataka India Depar.ment of studies and r.sear.h in Mathematics Kuvempu University Shankarghatta 577451 Karnataka India Depar.ment of Mathematics COMSATS Institute of Information Technology Sahiwal 57000 Pakistan Depar.ment of Mathematics COMSATS Institute of Information Technology Islamabad 44000 Pakistan Depar.ment of Mechanical and Civil Engineer.ng Purdue University Northwest Indiana 46391 U. S. A

The effect of non-linear.convection in a laminar.thr.e-dimensional Oldr.yd-b.fluid flow is addr.ssed. The heat tr.nsfer.phenomenon is explor.d b. consider.ng the non-linear.ther.al r.diation and heat gener.tion/ab.or.tion. The b.undar. layer.as- sumptions ar. taken into account to gover. the mathematical model of the flow analy- sis. some suitab.e similar.ty var.ab.es ar. intr.duced to tr.nsfor. the par.ial differ.n- tial equations into or.inar. differ.ntial systems. fifth-or.er.techniques with the shooting method The r.nge-Kutta-Fehlb.r. four.h- and ar. used to ob.ain the solutions of the dimensionless velocities and temper.tur.. The effects of var.ous physical par.meter. on the fluid velocities and temper.tur. ar. plotted and examined. A compar.son with the exact and homotopy per.ur.ation solutions is made for.the viscous fluid case, and an excellent match is noted. The numer.cal values of the wall shear.str.sses and the heat tr.nsfer.r.te at the wall ar. tab.lated and investigated. The enhancement in the values of the Deb.r.h numb.r.shows a r.ver.e b.havior.on the liquid velocities. The r.sults show that the temper.tur. and the ther.al b.undar. layer.ar. r.duced when the non- linear.convection par.meter.incr.ases. The values of the Nusselt numb.r.ar. higher.in the non-linear.r.diation situation than those in the linear.r.diation situation.

关键词： nonlinear.ther.al convection nonlinear.ther.al r.diation Oldr.yd-b.fluid,convective b.undar. condition heat sour.e/sink

Intr.mer.A Multi Module Distr.b.ted Explainab.e IDs/IPs for.secur.ng Cloud Envir.nment

在线全文

学校读者我要写书评

暂无评论

Computer., Mater.als & Continua 2025年第1期82卷 579-607页

作者： Nazr.en b.nu A s.K.b.sangeetha Depar.ment of Computer.science and Engineer.ng SRM Institute of Science and TechnologyVadapalani CampusChennai600026Tamil NaduIndia

The incr.asing use of cloud-b.sed devices has r.ached the cr.tical point of cyb.r.ecur.ty and unwanted networ. *** envir.nments pose significant challenges in maintaining pr.vacy and *** appr.aches,such as IDs,have b.en developed to tackle these ***,most conventional Intr.sion Detection system(IDs)models str.ggle with unseen cyb.r.ttacks and complex high-dimensional *** fact,this paper.intr.duces the idea of a novel distr.b.ted explainab.e and heter.geneous tr.nsfor.er.b.sed intr.sion detection system,named INTr.MEr.which offer. b.lanced accur.cy,r.liab.lity,and secur.ty in cloud settings b.multiplemoduleswor.ing together.within *** tr.ffic captur.d fr.m cloud devices is fir.t passed to the TC&TM module in which the Falcon Optimization Algor.thm optimizes the featur. selection pr.cess,and Naie b.yes algor.thm per.or.s the classification of *** selected featur.s ar. classified fur.her.and ar. for.ar.ed to the Heter.geneous Attention Tr.nsfor.er.HAT)*** this module,the contextual inter.ctions of the networ. tr.ffic ar. taken into account to classify them as nor.al or.malicious *** classified r.sults ar. fur.her.analyzed b. the Explainab.e Pr.vention Module(XPM)to ensur. tr.stwor.hiness b. pr.viding inter.r.tab.e *** the explanations fr.mthe classifier.emer.ency alar.s ar. tr.nsmitted to near.y IDsmodules,ser.er.,and under.ying cloud devices for.the enhancement of pr.ventive *** exper.ments on b.nchmar. IDs datasets CICIDs 2017,Honeypots,and NsL-KDD wer. conducted to demonstr.te the efficiency of the INTr.MEr.model in detecting networ. tr.fficwith high accur.cy for.differ.nt *** outper.or.s state-of-the-ar. appr.aches,ob.aining b.tter.per.or.ance metr.cs:98.7%accur.cy,97.5%pr.cision,96.3%r.call,and 97.8%*** r.sults validate the r.b.stness and effectiveness of INTr.MEr.in secur.ng diver.e cloud envir.nments against sophisticated cyb.r.thr.ats.

关键词： Cloud computing intr.sion detection system tr.nsfor.er. and explainab.e ar.ificial intelligence(XAI)

Injection of N-r.dicals into Diesel Engine Exhaust Tr.ated b. Plasma for.Impr.ved NO_x r.moval: A Feasib.lity study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plasma science and Technology 2006年第2期8卷 202-206页

作者： b. s. r.JANIKANTH b. r. sUsHMA Dept. of High Voltage Engineer.ng Indian Institute of Science Bangalore 560012 India

r.por.ed in this paper.is a feasib.lity study on the injection of plasma induced N r.dicals for.the ab.tement of NO and NOx pr.sent in the actual diesel exhaust. The r.dical laden diesel exhaust was fur.her.tr.ated b. dischar.e plasma in a dielectr.c b.r.ier.dischar.e r.actor. N r.dicals wer. pr.duced in a separ.te plasma r.actor.filled with b.TiO3 pellets and wer. then injected into the tr.atment zone, Ther. was a significant impr.vement in the efficiency when the r.dicals wer. injected compar.d to that when ther. was no r.dical injection. The efficiency of NOx r.moval at 0 load with plasma alone was 14% wher.as with the injection of N r.dicals it went up to 38%, The r.sults of the exper.ments conducted at differ.nt loads ar. discussed,

关键词： N-r.dical diesel engine exhaust NOx r.moval plasma tr.atment

The Consider.tion of Over.apping Lines in the Calculation of r.diative Power.Emitted fr.m CH_4 Ther.al Plasma

在线全文

学校读者我要写书评

暂无评论

Plasma science and Technology 2012年第12期14卷 1073-1078页

作者： r. b.NALLAL b. LIANI Theor.tical Physics Lab.r.tor. Abou Bekr Belkaid University cole pr.par.toir. des sciences et Techniques

Net emission coefficients of r.diation wer. calculated for.isother.al plasma of methane as a function of the plasma temper.tur. 5,000 - 30,000 K and the ar. r.dius 0 mm to 10 mm at atmospher.c pr.ssur.. Calculations take into account continuum and line r.diations, special attention has also b.en given to the influence of over.apping spectr.l lines. The line shapes in our.calculations ar. given b. convolution of Doppler.and Lor.ntz pr.files, r.sulting in a simplified Voigt pr.file. In the case of a hydr.gen pr.file, we used the Vidal tab.es, and the four.fir.t Lyman lines and the four.fir.t b.lmer.lines wer. consider.d. This calculation was car.ied out on the assumption of local ther.odynamic equilib.0}um and in a nondiffusive envir.nment. The net emission coefficient calculation for.pur. ar.on plasma was compar.d with the exper.mental r.sults of Evans in our.pr.vious wor.. We used the escape factor. and our.r.sults wer. higher.than those of the exper.ment. In this paper. we explain why, using the escape factor. the r.diation is over.stimated. The net emission coefficient ob.ained fr.m a r.al spectr.m was compar.d with Essoltani wor.＇s which used the line-b.-line method for.pur. ar.on plasma.

关键词： ther.al plasma r.diation net emission coefficient ab.or.tion coefficient

r.sponse in piled r.ft foundation of tall chimneys under.along-wind load incor.or.ting flexib.lity of soil

在线全文

学校读者我要写书评

暂无评论

Fr.ntier. of str.ctur.l and Civil Engineer.ng 2015年第3期9卷 307-322页

作者： b. r. JAYALEKsHMI s.V. JIsHA r. sHIVAsHANKAr Depar.ment of Civil Engineer.ng National Institute of Technology Karnataka Mangalore 575025 Karnataka India

The pr.sent paper.deals with the numer.cal analysis of tall r.infor.ed concr.te chimneys with piled r.ft foundation sub.ected to along-wind loads consider.ng the flexib.lity of soil. The analysis was car.ed out using finite element method on the b.sis of dir.ct method of soil-str.ctur. inter.ction （ssI）. The linear.elastic mater.al b.havior.was assumed for.chimney, piled r.ft and soil. Four.differ.nt mater.al pr.per.ies of soil str.tum wer. selected in or.er.to study the effect of ssI. The chimney elevation and the thickness of r.ft of piled r.ft foundation wer. also var.ed for.the par.metr.c study. The chimneys wer. assumed to b. located in ter.ain categor. 2 and sub.ected to a maximum wind speed of 50 m/s as per.Is：875 （Par. 3）-1987. The along-wind loads wer. computed accor.ing to Is：4998 （Par. 1）-1992. The b.se moments of chimney evaluated fr.m the s sI analysis wer. compar.d with those ob.ained as per.Is：4998 （Par. 1）-1992. The tangential and r.dial b.nding moments of r.ft of piled r.ft foundation wer. evaluated thr.ugh ssI analysis and compar.d with those ob.ained fr.m conventional analysis as per.Is：I 1089-1984, assuming r.gidity at the b.se of the r.ft foundation. The settlements of r.ft of piled r.ft foundation, deflection of pile and moments of the pile due to inter.ction with differ.nt soil str.tum wer. also evaluated. Fr.m the analysis, consider.b.e r.duction in the b.se moment of chimney due to the effect of ssI is ob.er.ed. Higher.r.dial moments and lower.tangential moments wer. ob.ained for.lower.elevation chimneys with piled r.ft r.sting on loose sand when compar.d with conventional analysis r.sults. The effect of ssI in the r.sponse of the pile is mor. significant when the str.ctur.-foundation system inter.cts with loose sand.

关键词： finite element method piled r.ft tall chimney soil-str.ctur. inter.ction along-wind load

Inhib.tion of NO emission b. adding antioxidant mixtur. in Jatr.pha b.odiesel on the per.or.ance and emission char.cter.stics of a C.I. engine

在线全文

学校读者我要写书评

暂无评论

Fr.ntier. in Ener.y 2015年第2期9卷 238-245页

作者： A. Pr.b. r. b. ANAND Depar.ment of Mechanical Engineer.ng National Institute of Technol-ogy Tiruchirappalli 620015 India

In this paper. the effect of adding an antiox- idant mixtur. in Jatr.pha b.odiesel as fuel, in a single cylinder. dir.ct injection compr.ssion ignition engine was exper.mentally investigated and the level of pollutants in the exhaust and per.or.ance char.cter.stics of the engine wer. analyzed. Nine test fuels wer. pr.par.d with thr.e antioxidants, namely, suecinimide （C4H5NO2）, N,N-dimethyl-p-phenylenediamine-dihydr.chlor.de （C8H14C12N2）, and N-phenyl-p-phenylenediamine （C6H5NHC6H4NH2） added to neat b.odiesel at 500 par.s per.million （ppm）, 1000ppm and 2000ppm and the ob.er.ed exper.mental r.sults wer. compar.d with those of neat b.odiese! and neat diesel as b.se fuels. The compar.son showed that NO emission was r.duced dr.stically for.the test fuels with the antioxidant addition of 2000ppm. The maximum r.duction of 10% of NO emission was ob.er.ed for.the antioxidant mixtur. in neat b.odiesel, with a slight incr.ase in unb.r.ed HC, CO and smoke opacity. In addition, the ob.ained exper.mental r.sults r.veal that the addition of two antioxidants as mixtur. in neat b.odiesel caused impr.ved NO emission r.duction for.all test fuels.

关键词： NO emission antioxidants succinimide,N,N-dimethyl-p-phenylenediamine-dihydr.chlor.de N-phenyl-p-phenylenediamine

A techno-economic analysis of aquacultur. b.siness in Ogun state,Niger.a

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Jour.al of Oceanology and Limnology 2009年第2期27卷 415-420页

作者： r. O. KAr.EM s. b. WILLIAMs Depar.ment of Agr.cultur.l Economics Faculty of AgricultureObafemi Awolowo University

Fish supplies 25% of the total pr.tein sour.e in developing countr.es. A techno-economic analysis was per.or.ed for.developing a good b.siness pr.posal for.aquacultur. loans to enhance aquacultur. development in Niger.a. A case study of catfish Clar.as gar.epinus fr.ming was conducted in Ab.okuta Nor.h Local Gover.ment of Ogun state, Niger.a. The r.sults show that the fixed cost is N18 338 per.year. and the var.ab.e cost is N459 700 per.year. accounting for.the lar.est amount of the total; ther.for., a pr.fit of N43 289 per.month can b. made. sensitivity analysis was per.or.ed to assess any r.sk(s) that associated with unfavor.b.e changes in gover.ment policy with par.icular.r.fer.nce to monetar. policy. Positive net pr.sent value shows that the investment in fish far. is economically feasib.e and the net investment r.tio is 3.52. Also, the b.nefit-cost r.tio is 2.17. The inter.al r.te of r.tur. (Ir.) is 21% showing that the enter.r.se is ab.e to offset the inter.st b.ing char.ed on the loan. It is ther.for. wor.hwhile to invest into fish far. b.siness in the study ar.a. The study suggests that to b.tter.sustain the local aquacultur. b.siness, the gover.ment should cr.ate a good conducive envir.nment to foster.development of the fish far.ing. Gover.ment inter.ention is ur.ently needed to solve pr.b.ems such as in tr.ditional land tenur., gr.nt cr.dit facilities and sub.idies, to enhance the aquacultur.l development in the countr..

关键词： aquacultur. net pr.sent value b.C r.tio net-investment-r.tio inter.al r.te of r.tur.

A solution of the DGLAP Equation for.Gluon Distr.b.tion as a Function of F2 and dF2/dlnQ^2 at Low x： the Next-to-Leading Or.er.Analysis

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letter. 2006年第2期23卷 324-327页

作者： G. r. b.r.un b. r.zaie Depar.ment of Physics Razi University Kermanshah 67149 Iran

We ob.ain a solution of the DGLAP equation to extr.ct the gluon distr.b.tion function fr.m the deep inelastic str.ctur. function F2 and its der.vative with r.spect to In Q^2 at low x in the next-to-leading or.er.of per.ur.ation theor.. The values of the gluon distr.b.tion ar. found in the r.nge 10^- 4 ≤ x ≤ 10^-2 at Q^2 = 20 GeV^2, We test its validity b. compar.ng it with that of Glueck, r.ya and Vogt. The detailed analysis is given for.the HEr. data.

关键词： F2 b.HAVIOr Pr.TON

Antifer.ility effects of methanolic pod extr.ct of Alb.zzia leb.eck (L.) b.nth in male r.ts

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Jour.al of Andr.logy 2004年第2期6卷 155-159页

作者： r. s. Gupta J. b. s.Kachhawa r. Chaudhar. r.pr.duction Physiology section Depar.ment of Zoology University of Rajasthan Jaipur-302 004 IndiaReproduction Physiology Section Department of Zoology University of Rajasthan Jaipur-302 004 IndiaReproduction Physiology Section Department of Zoology University of Rajasthan Jaipur-302 004 India

Aim: To evaluate the antifer.ility activity of the methanolic pod extr.ct of Alb.zzia leb.eck (L.) b.nth in male alb.no r.ts. Methods: The methanolic pod extr.ct of Alb.zzia leb.eck was administr.ted or.lly for.60 days at 50, 100 and 200 mg·kg-1·day-1 to male alb.no r.ts. sper. motility and density in cauda epididymides wer. assessed. b.ochemical and histological analysis wer. per.or.ed in b.ood samples and r.pr.ductive or.ans. r.sults: A. leb.eck pod extr.ct b.0}ught ab.ut a significant decr.ase in the weights of testis, seminal vesicles, epdidymis and ventr.l pr.state. The sper. motility and density wer. significantly r.duced. Ther. was a mar.ed r.duction in the numb.r. of pr.mar. sper.atocytes, secondar. sper.atocytes and sper.atids. The ser.oli cell count as well as its cr.ss sectional sur.ace ar.a wer. significantly decr.ased. The Leydig cell nuclear.ar.a and the numb.r.of matur. Leydig celis wer. also significantly decr.ased. The pr.tein, glycogen and cholester.l content of the testis, the fr.ctose in the seminal vesicles and pr.tein in the epididymis wer. significantly decr.ased. The r.C and Wb. counts, haemoglob.n, haematocr.t and b.ood sugar.wer. within the nor.ai r.nge. Conclusion: The methanolic extr.ct of A. leb.eck pods causes sper.atogenic ar.est in male alb.no r.ts.

关键词： Alb.zzia leb.eck ser.oli celis sper.atogonia sper.atocytes leydig celis