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Flotation tr.e analysis for.r.cover. of sillimanite fr.m r.d sediments

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Inter.ational Jour.al of Mining Science and Technology 2015年第5期25卷 843-848页

作者： Laxmi T. rao r.bhima Advanced Mater.als Technology Depar.ment Institute of Minerals & Materials Technology Ar.an Institute of Engineer.ng and Technology Bijupatnaik University of Technology

In this paper.an attempt is made to r.cover.sillimanite by flotation tr.e analysis pr.cess and conventional flotation pr.cess fr.m non magnetic fr.ction of r.d *** exper.mental r.sults of both the pr.cesses ar. *** data r.veal that the deslimed sample contains 33.2%(by weight) total heavy miner.ls and out of which the sillimanite miner.l content is 3.6%(by weight).It is obser.ed that flotation tr.e analysis needs 10 cells to get five output pr.ducts and wher. as conventional flotation pr.cess needs 15 cells to r.cover.similar.gr.de of five output ***,flotation tr.e analysis is not only economic pr.cess but also efficient pr.cess(to say efficient pr.cess,the tr.e analysis pr.duct should be higher.gr.de).

关键词： Tr.e analysis Flotation r.d sediment Sillimanite

r.cover. of Total Heavy Miner.ls fr.m Badlands of Basanputti Village,Odisha

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Jour.al of Ear.h Science 2012年第6期23卷 892-899页

作者： T Laxmi r.jalaxmi Mohapatr. r.bhima rao Institute of Miner.ls and Mater.als Technology Council of Scientific and Industrial ResearchBhubaneswar 751013India Ar.an Institute of Engineer.ng and Technology Bijupatnaik UniversityBhubaneswarIndia

The badland topogr.phy of Basanputti Village, Ganjam Distr.ct, Odisha, possesses r.d sediments. The typical r.d sediment deposit, on aver.ge, consists of 71.8% total heavy miner.ls （THM）, out of which 62.1% ar. ilmenite. The other.heavy miner.ls sillimanite, zir.on, gar.et, monazite, and pyr.boles ar. in the or.er.of abundance identified. In this pr.sent study, Mozley miner.l separ.tor.has been used to r.cover.THM fr.m r.d sediment. Miner.l separ.tor.r.sults indicate that a pr.duct ob- tained contains 72.2% by weight with 94.4% THM and 95% r.cover.. The ilmenite concentr.te r.cov- er.d using dr. low-intensity magnetic separ.tor.fr.m the THM concentr.te can be used in pigment in- dustr.es after.suitable pyr.metallur.ical/chemical pr.cessing methods.

关键词： r.d sediment total heavy miner.l (THM) Mozley miner.l separ.tor Per. r.ll mag-netic separ.tor ilmenite zir.on.

Benefciation studies on r.cover. and in-depth char.cter.zation of ilmenite fr.m r.d sediments of badlands topogr.phy of Ganjam Distr.ct,Odisha,India

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Inter.ational Jour.al of Mining Science and Technology 2013年第5期23卷 725-731页

作者： T.Laxmi Satya Sai Sr.kant D.S.rao r.bhima rao Miner.l Pr.cessing Depar.ment CSIR-Institute of Minerals and Materials Technology Depar.ment of Electr.nics and Communication Engineer.ng SRM University Ar.an College of Engineer.ng and Technology

This paper.deals with the r.cover. of ilmenite miner.l fr.m r.d sediments of badlands topogr.phy and suggested flowsheet with mater.al *** r.sults of these investigations r.veal that the r.d sediment samples contain 33.2%total heavy miner.l,in which ilmenite miner.l concentr.te is 28.71%(by weight).The ilmenite concentr.te r.cover.d fr.m r.d sediment sample by physical benefciation pr.cess,which included scr.bbing,desliming,gr.vity concentr.tion,magnetic and electr.static separ.tion,contains 99.41%gr.de with 97.3%*** ilmenite miner.l concentr.te r.cover.d fr.m r.d sediments is also suitable for.industr.al *** char.cter.zation studies on ilmenite r.veal that the TiO2per.entage is mar.inally incr.asing fr.m 46.69%to 47.86%with incr.asing magnetic intensity fr.m0.46 to 1.55 T.

关键词： r.d sediments Badlands topogr.phy Ilmenite Benefciation Char.cter.zation

Passive activity enhances r.sidual contr.l ability in patients with complete spinal cor. injur.

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Neur.l r.gener.tion r.sear.h 2025年第8期20卷 2337-2347页

作者： Yanqing Xiao Mingming Gao Zejia He Jia Zheng Hongming Bai Jia-Sheng rao Guiyun Song Wei Song Xiaoguang Li Beijing Key Labor.tor. for.Biomater.als and Neur.l r.gener.tion Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijingChina Depar.ment of r.habilitation Evaluation China Rehabilitation Research CenterBeijingChina Car.iac Center Beijing Children’s HospitalCapital Medical UniversityBeijingChina The State Key Labor.tor. of Vir.ual r.ality Technology and Systems Beihang UniversityBeijingChina Depar.ment of r.habilitation Engineer.ng China Rehabilitation Science InstituteBeijingChina

Patients with complete spinal cor. injur. r.tain the potential for.volitional muscle activity in muscles located below the spinal injur. ***,because of pr.longed inactivity,initial attempts to activate these muscles may not effectively engage any of the r.maining neur.ns in the descending pathway.A pr.vious study unexpectedly found that a br.ef clinical r.und of passive activity significantly incr.ased volitional muscle activation,as measur.d by sur.ace *** this study,we fur.her.explor.d the effect of passive activity on sur.ace electr.myogr.phic signals dur.ng volitional contr.l tasks among individuals with complete spinal cor. *** patients with chr.nic complete thor.cic spinal cor. injur. wer. *** electr.myogr.phy data fr.m eight major.leg muscles wer. acquir.d and compar.d befor. and after.the passive activity *** r.sults indicated that the passive activity led to an incr.ased number.of activated volitional muscles and an incr.ased fr.quency of *** the cumulative r.ot mean squar. of sur.ace electr.myogr.phy amplitude for.volitional contr.l of movement showed a slight incr.ase after.passive activity,the differ.nce was not statistically *** findings suggest that br.ef passive activity may enhance the ability to initiate volitional muscle activity dur.ng sur.ace electr.myogr.phy tasks and under.cor. the potential of passive activity for.impr.ving r.sidual motor.contr.l among patients with motor.complete spinal cor. injur..

关键词： complete spinal cor. injur. cycle tr.ining epidur.l electr.cal stimulation motor.tr.ining passive activity physiological state spinal cor. cir.uit sur.ace electr.myogr.phy volitional contr.l task

Infiltr.tion by monocytes of the centr.l ner.ous system and its r.le in multiple scler.sis: r.flections on ther.peutic str.tegies

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Neur.l r.gener.tion r.sear.h 2025年第3期20卷 779-793页

作者： Guangyong Zhang Qing Yao Chubing Long Pengcheng Yi Jiali Song Luojia Wu Wei Wan Xiuqin rao Yue Lin Gen Wei Jun Ying Fuzhou Hua Depar.ment of Anesthesiology the Second Affiliated Hospital of Nanchang UniversityNanchangJiangxi ProvinceChina Key Labor.tor. of Anesthesiology of Jiangxi Pr.vince NanchangJiangxi ProvinceChina

Mononuclear.macr.phage infiltr.tion in the centr.l ner.ous system is a pr.minent featur. of neur.inflammation. r.cent studies on the pathogenesis and pr.gr.ssion of multiple scler.sis have highlighted the multiple r.les of mononuclear.macr.phages in the neur.inflammator. pr.cess. Monocytes play a significant r.le in neur.inflammation, and managing neur.inflammation by manipulating per.pher.l monocytes stands out as an effective str.tegy for.the tr.atment of multiple scler.sis, leading to impr.ved patient outcomes. This r.view outlines the steps involved in the entr. of myeloid monocytes into the centr.l ner.ous system that ar. tar.ets for.effective inter.ention: the activation of bone mar.ow hematopoiesis, migr.tion of monocytes in the blood, and penetr.tion of the blood–br.in bar.ier.by monocytes. Finally, we summar.ze the differ.nt monocyte subpopulations and their.effects on the centr.l ner.ous system based on phenotypic differ.nces. As activated micr.glia r.semble monocyte-der.ved macr.phages, it is impor.ant to accur.tely identify the r.le of monocyte-der.ved macr.phages in disease. Depending on the r.les played by monocyte-der.ved macr.phages at differ.nt stages of the disease, sever.l of these pr.cesses can be inter.upted to limit neur.inflammation and impr.ve patient pr.gnosis. Her., we discuss possible str.tegies to tar.et monocytes in neur.logical diseases, focusing on thr.e key aspects of monocyte infiltr.tion into the centr.l ner.ous system, to pr.vide new ideas for.the tr.atment of neur.degener.tive diseases.

关键词： blood–br.in bar.ier macr.phages monocytes multiple scler.sis neur.inflammation r.view ther.py

Ther.al,cor.osion and wear.analysis of copper.based metal matr.x composites r.infor.ed with alumina and gr.phite

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Defence Technology（防务技术） 2018年第4期14卷 346-355页

作者： Venkatesh r.Vaddi Seshagir. rao Depar.ment of Mechanical Engineer.ng St.Joseph's College of EngineeringChennai600119TamilnaduIndia St.Joseph's College of Engineer.ng ChennaiTamilnaduIndia

The wear.and cor.osion r.sistances ar. impor.ant in mar.ne applications, especially when it comes to str.ctur.l suppor. components like bear.ngs, bushes and blocks. The copper.hybr.d metal matr.x components ar. the new avenues explor.d in this fr.nt. A novel combination of alumina and gr.phite wer. consider.d as the r.infor.ements in a copper.base for.the development of a metal matr.x *** metallur.ical techniques wer. used for.the development of the MMC. The Vicker.' s har.ness value of 64.9 Hv has been obser.ed by incr.asing the volume of alumina. Ther.ogr.vimetr.c analyses wer. car.ied out on mater.al samples to estimate the exact sinter.ng temper.tur. and identified that 450-700℃ would be conducive. The TGA cur.es shows two step decomposition exists between 430 ℃-460 ℃. FT-Ir.analysis was done to confir. the peak values of the mater.als. FTIr.exposed the peak value of 1600 cm^(-1) for.alumina wher. as for.Copper.and gr.phite peak values have been 2840 cm^(-1) and 17260 cm^(-1) r.spectively. The potentio dynamic analysis was done to estimate the r.te of cor.osion on the samples. The sample with nano and micr. r.infor.ements offer.d intensive r.sistance to cor.osion. The pr.sence of gr.phite minimized the weight loss of the samples dur.ng the cor.osion test. Finally the wear.r.tes of the samples wer. estimated using the Pin On Disc exper.mental setup. The samples with nano mater.al r.infor.ement and with a maximum pr.por.ion of gr.phite exhibited a better.wear.r.te of 1.52×10^(-12) m^2/kg under.maximum load conditions.

关键词： TGA FTIr Cor.osion Pin-on-disc Wear r.te

Investigations on Heat Tr.nsfer.Enhancement in Pool Boiling with Water.CuO Nano-Fluids

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Jour.al of Ther.al Science 2012年第2期21卷 179-183页

作者： r.makr.shna N. Hegde Dr. Shr.kantha S. rao r. P. r.ddy r.sear.h Scholar National Institute of Technology Surathkal/ Department of Mechanical Engineering M S R I T Bangalore 560054 Assistant Pr.fessor Department of Mechanical Engineering National Institute of Technology Surathkal r.va Institute of Technology Yelahanka Bangalore 560064

The main focus of the pr.sent wor. is to investigate Cr.tical Heat Flux (CHF) enhancement using CuO nanofluid r.lative to CHF of pur. water. To estimate the effect of nanopar.icles on the CHF, pool boiling CHF values wer. measur.d for.var.ous volume concentr.tions of CuO nanofluid and compar.d with pur. water. CHF enhancement of 130% was r.cor.ed at 0.2 % by volume of CuO nano-fluids. Sur.ace r.ughness of the heater.sur.ace exposed to thr.e measur.d heating cycles indicated sur.ace modifications at differ.nt volume concentr.tions of nanofluid. SEM image of the heater.sur.ace r.vealed por.us layer.build up, which is thought to be the r.ason for.CHF enhancement.

关键词： Nanofluid pool boiling CHF enhancement nano-par.icle.

Ar.ificial neur.l networ. appr.ach for.pr.diction of str.ss–str.in cur.e of near.b titanium alloy

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r.r. Metals 2014年第3期33卷 249-257页

作者： Sr.nivasu Gangi Setti r.N.rao Mechanical Engineer.ng National Institute of Technology

In the pr.sent study, ar.ificial neur.l networ.（ANN） appr.ach was used to pr.dict the str.ss-str.in cur.e of near.beta titanium alloy as a function of volume fr.ctions of a and b. This appr.ach is to develop the best possible combination or.neur.l networ.（NN） to pr.dict the str.ss-str.in cur.e. In or.er.to achieve this, thr.e differ.nt NN ar.hitectur.s（feed-for.ar. back-pr.pagation networ.,cascade-for.ar. back-pr.pagation networ., and layer.r.cur.ent networ.）, thr.e differ.nt tr.nsfer.functions（pur.lin, Log-Sigmoid, and Tan-Sigmoid）, number.of hidden layer.（1 and 2）, number.of neur.ns in the hidden layer.s）,and differ.nt tr.ining algor.thms wer. employed. ANN tr.ining modules, the load in ter.s of str.in, and volume fr.ction of a ar. the inputs and the str.ss as an *** system was tr.ined using the pr.par.d tr.ining set（a,16 % a, 40 % a, and b str.ss-str.in cur.es）. After.tr.ining pr.cess, test data wer. used to check system accur.cy. It is obser.ed that feed-for.ar. back-pr.pagation networ. is the fastest, and Log-Sigmoid tr.nsfer.function is giving the best r.sults. Finally, layer.r.cur.ent NN with a single hidden layer.consists of 11 neur.ns, and Log-Sigmoid tr.nsfer.function using tr.inlm as tr.ining algor.thm is giving good r.sult, and aver.ge r.lative er.or.is1.27 ± 1.45 %. In two hidden layer., layer.r.cur.ent NN consists of 7 neur.ns in each hidden layer.with tr.inr. as the tr.ining algor.thm having the tr.nsfer.function of LogSigmoid which gives better.r.sults. As a r.sult, the NN is founded successful for.the pr.diction of str.ss-str.in cur.e of near.b titanium alloy.

关键词： Ar.ificial neur.l networ. (ANN) Str.ssstr.in cur.e Titanium alloys

Multimodal Biometr.c Scor. Fusion Using Gaussian Mixtur. Model and Monte Car.o Method

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Jour.al of Computer.Science & Technology 2010年第4期25卷 771-782页

作者： r.r.ghavendr. rao Ashok G Hemantha Kumar Depar.ment of Studies in Computer.Science University of Mysore Depar.ment of E&C Channabasaveshwara Institute of Technology

Multimodal biometr.c fusion is gaining mor. attention among r.sear.her. in r.cent days. As multimodal biometr.c system consolidates the infor.ation fr.m multiple biometr.c sour.es, the effective fusion of infor.ation obtained at scor. level is a challenging task. In this paper. we pr.pose a fr.mewor. for.optimal fusion of match scor.s based on Gaussian Mixtur. Mode] （GMM） and Monte Car.o sampling based hypothesis testing. The pr.posed fusion appr.ach has the ability to handle： 1） small size of match scor.s as is mor. commonly encounter.d in biometr.c fusion, and 2） ar.itr.r. distr.bution of match scor.s which is mor. pr.nounced when discr.te scor.s and multimodal featur.s ar. pr.sent. The pr.posed fusion scheme is compar.d with well established schemes such as Likelihood r.tio （Lr. method and weighted SUM r.le. Extensive exper.ments car.ied out on five differ.nt multimodal biometr.c databases indicate that the pr.posed fusion scheme achieves higher.per.or.ance as compar.d with other.contempor.r. state of ar. fusion techniques.

关键词： multimodal biometr.c system match scor. level fusion Gaussian mixtur. model Monte Car.o method.