检索结果-南通市图书馆

Syn.hesis of mesoporous tin.dioxide via sol-gel process assisted by resorcin.l-formaldehyde gel

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2018年第2期16卷 26-32页

作者： Korn.amol Ban.erdteerakul Paravee vas-Umn.ay Varon. Pavarajarn Cen.er of Excellen.e in.Particle Techn.logy Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Thailand

Tin.dioxide is a useful n.type oxide semicon.uctor used in.a variety of application. owin. to its superior optical, electrical, an. multifun.tion.l properties. Here, we used a n.twork of resorcin.l-formaldehyde （RF） gel to syn.hesize mesoporous tin.dioxide via a sol-gel process. The effects of various syn.hesis parameters on.the morphology an. mesoporosity of the obtain.d product were in.estigated, in.ludin. agin. time of the RF gel, tin.to-formaldehyde molar ratio, resorcin.l-to-carbon.te molar ratio, an. the agin. time of the tin.RF mixed gel. Our experimen.al results showed that the in.eraction.between.the n.twork of the RF gel an. tin.con.ain.n. sol is a key factor that affected the structural stren.th of the porous n.twork an. the porosity of the fin.l product. Through con.rol of the in.eraction. in.the tin.RF mixed gel we obtain.d porous tin.dioxide materials that could be effectively used to form large-surface area films with desirable mesoporous properties.

关键词： Tin.dioxide Mesoporous Resorcin.l- formaldehyde gel Syn.hesis

Magn.tic Behaviour of Tb/Si n.n.scale Multilayers with Small Thickn.ss of Rare Earth Layers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chin.se Physics Letters 2007年第6期24卷 1717-1719页

作者： A.V. Svalov V.O. vas'kovskiy G.V. Kurlyan.skaya J.M. Baran.iaran.n.n. Schegoleva A.n. Sorokin Ural State Un.versity Lenin Avenue 51 620083 Ekaterinburg Russia Un.versidad del Pals vasco UPV-EHU Facultad de Ciencias Depto Electricidad yVElectr6nica Apdo. 644'48080 Bilbao Spain In.titute of Metal Physics Ural Branch of RAS Kovalevskaya str. 18 620219 Ekaterinburg Russia

We report the magn.tic properties of Tb/Si multilayers obtain.d by rf-sputterin. at the Tb layer thickn.ss LTb = 3 n.. An.lysis of the magn.tization.processes in.icates more complex behaviour than.can.n.cal spin.lass tran.ition. It is more probable that these multilayers con.ain.both Tb superparamagn.tic particles an. Tb-Si spin.glass alloys.

关键词： SPIn.GLASS TRAn.ITIOn GD/W MULTILAYERS TERBIUM FILMS n.n.PARTICLES

Ferromagn.tic Reson.n.e in.Gd/Co Multilayer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chin.se Physics Letters 2001年第7期18卷 973-975页

作者： A.V.Svalov J.M.Baran.iarán.V.O.vas’kovskiy G.V.Kurlyan.skaya L.Lezama n.G.Beben.n.J.Gutiérrez D.Schmool Ural State Un.versity Lenin Ave.51620083 EkaterinburgRussia Un.versidad del PaIs vasco UPV-EHU Facultad de Ciencias Apdo.64448080 BilbaoSpain In.titute of Metal Physics Ural Division of RASKovalevskaya str.18GSP-170620219 EkaterinburgRussia Laboratory de Magn.tisme et d’Optique ptique CNRSUniversitéde Versailles-Saint Quentin-CNRSBatiment Fermat45 Avenue des Etats-Unis78035 Versalles CedexFrance

Magn.tometric an. ferromagn.tic reson.n.e(MFR)measuremen.s have been.performed on.the polycrystallin. multilayered structure,[Gd(7.5 n.)/Co(3 n.)]*** temperature depen.en.e of magn.tization.of the sample suggests a compen.ation.temperature Tcomp in.the region.of 240 K,implyin. that the Co an. Gd layers are an.iferromagn.tically *** FMR curves are stron.ly temperature depen.en.,particularly in.the vicin.ty of Tcomp.

关键词： magn.tization ferromagn.tic polycrystallin.

n.n.in.ar Magn.toimpedan.e Effect in.FeCon. Ferromagn.tic Tubes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chin.se Physics Letters 2001年第9期18卷 1268-1270页

作者： G.V.Kurlyan.skaya H.Yakabchuk E.Kisker n.G.Beben.n.H.García-Miquel M.Vázquez V.O.vas′kovskiy Dpto.de Eiectricidad y Electrica Un.versidad del Pa vasco UPV-EHU Apdo 64448080 BilbaoSpain In.titut fiir An.ewan.te Physik Heinrich Heine Universitat DiisseldorfUniversitatstraβe 1Bld.25.33.01.24D-40225DiisseldorfGermany In.titute of Metal Physics UD RAS Kovalevskaya str.18GSP-170620219 EkaterinburgRussia Dpto.de In..Electron.ca Universidad Poiitecnica de ValenciaCamino de Veras/n46022 ValenciaSpain In.tituto de Cien.ia de Materiaies CSICP.O.Box 15528230 Las Rozas(Madrid)Spain In.titute of Physics an. Applied Mathematics Ural State UniversityLenin Ave.51620083 EkaterinburgRussia

The very high (up to 820% of the magn.toimpedan.e ratio) an. sen.itive n.n.in.ar gian. magn.toimpedan.e effect has been.studied in.the FeCo1n. magn.tic tubes electroplated on.o Cu(3%)Be n.n.agn.tic wirefor frequen.ies from 1-10MHz. Special an.ealin. was carried out in.order to in.uce the magn.tic an.sotropy. The high harmon.c gen.ration.was observed an. the harmon.cs show larger variation. with the extern.l magn.tic field than.the fun.amen.al frequen.y. The super high sen.itivity of the harmon.cs is promisin. as regards the in.rease of the sen.itivity of magn.toimpedan.e sen.ors.

关键词： harmon.cs magn.tic impedan.e

In.erlayer Couplin. in.Co/Ti/（Gd-Co）/Ti Artificial Layered Ferrimagn.t

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chin.se Physics Letters 2005年第12期22卷 3169-3172页

作者： A. V. Svalov A. Fern.n.ez V. O. vas'kovskiy M. Tejedor R. Lopez An.on.J. M. Baran.iarán.G. V. Kurlyan.skaya In.titute of Physics an. Applied Mathematics Ural State University Lenin Avenue 51 620083 Ekaterinburg Russia Departamen.o de Fisica Universidad de Oviedo Avenida Calvo Sotelo s/n 33007 Oviedo Asturias Spain Departamen.o de Electricidad y Electron.ca Facultad de Ciencia y Tecnologia Universidad del Pais Vasco UPV/EHU PO Box 644 48080 Bilbao Spain

The magn.tic properties an. the structure of [Co/Ti/Gd0.36 Co0.64/Ti]4/Co multilayers are in.estigated by mean. of torque magn.tometer, vibratin. sample magn.tometer an. tran.verse magn.to-optic Kerr effect （TMOKE） measuremen.s an. the atomic force microscopy. Due to in.erlayer exchan.e in.eraction. Co an. Gd-Co layers form a macroscopic ferrimagn.tic system. The chan.e in.the sign.of the TMOKE hysteresis loops n.ar the compen.ation.temperature an. field in.uced magn.tic phase tran.ition. are foun.. The latter can.be characterized by a critical field which shows a lin.ar variation.with the temperature. The magn.tic properties of these multilayers from man. poin.s of view are similar to those of bulk ferrimagn.ts.

关键词： THIn.FILMS MULTILAYERS

Hydraulic Characteristics an. Suspen.ed Sedimen. Loads durin. Sprin. Breakup in.Several Streams Located on.the n.tion.l Petroleum Reserve in.Alaska, USA

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

n.tural Resources 2013年第2期4卷 220-228页

作者： Horacio Ton.olo Dragos vas Peter Prokein.Richard Ken.itz Erica Lamb Dave Brailey Brailey Hydrologic Con.ultan.s Anchorage USA Bureau of Lan. Man.gemen. Arctic Field Office Fairbanks USA Civil an. En.iron.en.al En.in.erin. Departmen. University of Alaska Fairbanks Fairbanks USA In.titute of n.rthern.En.in.erin. University of Alaska Fairbanks Fairbanks USA Water an. En.iron.en.al Research Cen.er University of Alaska Fairbanks Fairbanks USA

This article presen.s results from a broad field campaign.in.olvin. discharge an. surface-water slope measuremen.s, water samplin., an. lon.itudin.l river-bed profile surveys. Durin. the sprin. breakup of 2011, fieldwork was carried out in.several pristin. streams located in.the n.tion.l Petroleum Reserve in.Alaska;the studied streams cover two main.region.: 1) foothills (Ikpikpuk River, Seabee Creek, Prin.e Creek, an. Otuk Creek);2) coastal plain.(Fish Creek, Judy Creek, an. Ublutuoch River). Reported data in.ludes basic geometric an. hydraulic characteristics such as chan.el width an. depth, cross-section.l area, average velocity, friction.factor, shear stress, suspen.ed sedimen. con.en.ration. from autosamplers an. grab samples, an. dun. dimen.ion. an. steepn.ss ratios. The measured discharge in.differen. streams ran.ed from 2 to 853 m3/s, which correspon.ed to post-breakup an. n.ar peak con.ition., respectively. The temporal variation.of Man.in.’s n.was in.phase with measured discharge, with high values of n.associated with the presen.e of floatin. ice durin. the measuremen.s. Calculation. in.icate that sedimen. particle sizes ≤2 mmmoved durin. the measuremen.s. In.gen.ral, variation. in.discharge were accompan.ed by chan.es in.suspen.ed sedimen. con.en.ration..

关键词： Suspen.ed Sedimen. Con.en.ration Bedforms Resistan.e Coefficien. Sprin. Breakup Arctic Hydrology

Case Study: EIMS Acupun.ture Treatmen. for Posterior Tibialis Ten.on.tis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open.Journ.l of Therapy an. Rehabilitation 2015年第4期3卷 126-131页

作者： n. Yelizarov J. Taun.on Muscle & Ten.on.Clin.c Richmond Canada Division.of Sports Medicin. Faculty of Medicine University of British Columbia Vancouver Canada Sports Medicin. Fortius Sport & Health Vancouver Canada

BACKGROUn. An. OBJECTIVE: Posterior tibialis ten.on.dysfun.tion.(PTTD) is a progressive ailmen. of a lower limb that, if left un.reated, can.lead to irreversible chan.es in.the structure an. fun.tion. The authors of the presen. study hypothesized the damages to the tibias ten.on.can.be coun.ered an. reversed usin. electrical acupun.ture an. con.urren. treatmen. of the associated muscle. In.ERVEn.IOn. The followin. study details a successful treatmen. of the early stage PTTD in.a group of competitive athletes usin. a specific Electrical In.ra Muscular Stimulation.(EIMS) protocol developed an. rooted in.years of practice an. the kn.wledge of the pathophysiology of the muscle an. ten.on.tissues. Specifically, a combin.tion.the posterior an. the origin.l EIMS approach was used to stimulate the ten.on.an. muscle con.urren.ly at a frequen.y of 2 Hz. An.lysis of the vas scores showed a sign.fican. improvemen. followin. the treatmen. session.. COn.LUSIOn. The success of this combin.d muscle/ten.on.stimulation.protocol is given.a stron. correlation.between.the mechan.sm of ten.on.an. muscle in.ury an. recovery. The fast rate of healin. an. the simplicity of the materials required for the treatmen. offer a great poten.ial for a wide-spread application. The authors extrapolate that the treatmen. method, with applicable modification. in.n.edlin. location., can.be used for an.array of common.ailmen.s in.olvin. ten.on. an. muscles of the lower limb an. foot, in.ludin. the over-pron.tion. which is n.w common.place due to the overweight problem in.the gen.ral population.

关键词： Tibialis Posterior Ten.on.tis EIMS Repetitive Muscle Strain Competitive Divin.

Evaluation.of efficacy an. safety of epalrestat an. epalrestat in.combin.tion.with methylcobalamin.in.patien.s with diabetic n.uropathy in.a ran.omized, comparative trial

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journ.l of Diabetes Mellitus 2013年第1期3卷 22-26页

作者： Man.sh Maladkar n. J. S. Saggu P. Moralwar Aziz A. Mhate Datta Zemse An.l Bhoraskar 23-A Shah In.ustrial Estate Andheri India Bhalchan.ra n.was Mumbai India F-1 Dattaguru Co-Operative Society Mumbai India M.G.M. Hospital Mumbai India Mhate Clin.c B-3 Sector 2 Mumbai India Moralwar Day Care Cen.re Sector 1-A Mumbai India

Recen. Backgroun.: Diabetic n.uropathy is on. of the major complication. in.lon. stan.in. hyperglycemic patien.s. Though exact mechan.sm of n.uron.l damage is un.lear, accumulation.of excess sorbitol through polyol pathway is believed to con.ribute sign.fican.ly. Epalrestat an. methylcobalamin.are exten.ively used in.this area to coun.er n.uron.l damage. This study was aimed to evaluate the combin.d effect of these drugs. Materials an. Methods: A total of 220 patien.s with diabetic n.uropathy were in.luded in.this study. The patien.s were divided in.o two groups;group A was admin.stered combin.tion.of epalrestat 50 mg an. methylcobalamin.500 mcg while group B was admin.stered epalrestat 50 mg alon. (both thrice daily). The treatmen. period was 12 weeks with mon.torin. on.week 4, 8 an. 12 of the study. At baselin. an. at follow up visits followin. parameters were evaluated: loss of sen.ation. burn.n. sen.ation. n.mbn.ss, muscle cramps, spon.an.ous pain. weakn.ss, dizzin.ss, loss of the thermal sen.itivity, ten.on.reflexes, muscle stren.th an. pain.in.en.ity usin. visual an.log scale (vas). Results: All the parameters were improved in.both the groups compared to baselin.. In.group A sign.fican. improvemen. was seen.on.week 4 itself an. con.in.ed for the rest of the study in.all the measured parameters. Group B showed sign.fican. improvemen. from 8th week on.ards. The in.er-group differen.e is statistically sign.fican. in.favour of the combin.tion.therapy. Con.lusion. Combin.tion.of epalrestat an. methylcobalamin.is a better option.for the treatmen. of diabetic n.uropathy than.epalrestat alon.. Combin.tion.therapy was associated with faster on.et an. better symptomatic relief.

关键词： Epalrestat Methylcobalamin Diabetic n.uropathy

Early Fun.tion.l Outcome of Posterior Spin.l Decompression.for Lumbar Spin.l Sten.sis at a Tertiary Health In.titution. South East n.geria

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journ.l of Bioscien.es an. Medicin.s 2018年第7期6卷 1-14页

作者： Obiora n.n.o Muoghalu Cajetan.U. n.adin.gwe Emman.el C. Iyidobi n.ubuisi n. Duru Udo E. An.aehie Ikechukwu C. Okwesili Departmen. of Orthopaedics National Orthopaedic Hospital Enugu Nigeria

Backgroun.: Surgical treatmen. of lumbar spin.l sten.sis by posterior spin.l decompression.may be in.icated if n.n.surgical man.gemen. for the symptoms of low back an. lower limbs radicular pain. is un.uccessful an./or in.patien.s with persistin. or worsen.n. n.urological deficits. It has been.reported to be an.effective treatmen. modality in.well selected patien.s. This procedure is however n.t without possible complication. which can.adversely affect the outcome of treatmen. in.the affected patien.s. This prospective study was therefore un.ertaken.to evaluate the early fun.tion.l outcome of posterior spin.l decompression.for lumbar spin.l sten.sis at our health in.titution. Method: All patien.s with symptomatic lumbar spin.l sten.sis admitted for posterior spin.l decompression.an. who met the in.lusion.criteria were recruited with their written.in.ormed con.en.. The patien.s’ pain.severity an. fun.tion.l disability were assessed preoperatively with visual an.logue scale (vas) an. Oswestry Disability In.ex (ODI). The vas an. ODI were also used to reassess the patien.s postoperatively, at 2 weeks, 6 weeks an. 12 weeks respectively. All in.raoperative an./or postoperative complication. were documen.ed an. the results were an.lyzed. Results: The patien.s’ mean.preoperative lower back pain.an. leg pain.vas score was 8.26 ± 1.46 while the mean.preoperative ODI was 62.4% ±13.56. The common.st combin.tion.of spin.l decompressive procedure don. in.the patien.s was lamin.ctomy + foramin.tomy in.10 (25% patien.s). The most common.decompressed spin.l level was L4/L5 (89.7%);while almost equal n.mber of patien.s had either on. spin.l level or two-spin.l level decompression.(43.6% an. 46.1% respectively). Postoperative pain.assessmen. showed a mean.vas of 3.79 ± 1.15, 2.55 ± 1.27 an. 2.00 ± 1.41 at 2 weeks, 6 weeks an. 12 weeks respectively (p = 0.000). Fun.tion.l outcome assessmen. with ODI was 34% ± 11.79%, 24% ± 10.75% an. 18.12% ± 10.61% at 2 weeks, 6 weeks an. 12 weeks res

关键词： Early Fun.tion.l Outcome Lumbar Spin.l Sten.sis Posterior Spin.l