检索结果-南通市图书馆

基础自动化 2000年第6期7卷 9-10,39页

作者：韩绍坤 Nоv.кov v.А . 北京理工大学北京100081 St.Petersburg ETU russia197396

针对著名的 Smith预估器,为了补偿变化的时滞,采用自适应补偿算法,使补偿时滞的模型可以跟踪时滞的变化,从而提出一种新型控制算法.仿真结果表明,改进的方案可以明显地提高控制系统精度.

关键词：时滞系统控制算法 Smith预估器自适应控制

a.a.ysis of Higher Order System with Impulse Exciting Functions in Z-Doma.n

在线全文

学校读者我要写书评

暂无评论

Circuits a.d Systems 2016年第11期7卷 3951-3970页

作者： Bra.isla. Dobrucký Pa.ol Štefa.ec Ma.ia.a.Beňová Oleg v. Chernoya.ov Micha. Pokorný Fa.ulty of Electrica. Engineering University of ?ilina ?ilina Slovak Republic Depa.tment of Ra.io Engineering Dev.ces a.d a.tenna.Systems National Research University Moscow Power Engineering Institute Moscow Russia

This pa.er dea.s with ma.hema.ica. modelling of impulse wa.eforms a.d impulse switching functions used in electrica. engineering. Impulse switching functions a.e la.er inv.stiga.ed using direct a.d inv.rse z-tra.sforma.ion. The results ma.e possible to present those functions a. infinite series expressed in pure numerica., exponentia. or trigonometric forms. The ma.n a.v.0}ta.e of used a.proa.h is the possibility to ca.cula.e inv.stiga.ed v.0}ia.les directly in a.y insta.t of time;dyna.ic sta.e ca. be solv.d with the step of sequences (T/6, T/12) tha. mea.s v.ry fa.t. Theoretica.ly deriv.d wa.eforms a.e compa.ed with simula.ion worked-out results a. well a. results of circuit emula.or LT spice which a.e giv.n in the pa.er.

关键词： Impulse Systems Switching Function Z-Tra.sforma.ion Inv.rse Z-Tra.sforma.ion Stea.y Sta.e Opera.ion Dyna.ica. Sta.e Model Modelling a.d Simula.ion

Long-term surv.v.0} of a.pa.ient a.ter resection of a.ga.trointestina. stroma. tumor a.ising from the pa.crea.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hepa.obilia.y & Pa.crea.ic Disea.es Interna.iona. 2011年第3期10卷 330-332页

作者： Filip eka.Bohumil Jon a.exa.der Ferko Zdeněk ubrt Dimita. H Nikolov v.ra.Tyová Depa.tment of Surgery Fa.ulty of Medicine a.d Univ.rsity Hospita. Hra.ec Králové Depa.tment of Field Surgery Military Health Science FacultyHradec KrálovéDefence University Brno Fingerla.d Depa.tment of Pa.hology

Ba.KGROUND:Ga.trointestina. stroma. tumors (GISTs) ma. a.ise in a.y pa.t of the ga.trointestina. tra.t;extra.a.trointestina. loca.ions a.e extremely *** a.few ca.es of extra.a.trointestina. stroma. tumor a.ising from the pa.crea. were *** of the reports described a.long-term follow-up of the ***:This report describes a. interesting a.d unusua. ca.e of GIST a.ising from the ***:a.74-yea.-old fema.e presented with a.pa.pa.le a.domina. *** sca. showed a.la.ge ma.s 11×8×4 cm origina.ing from the ta.l of the *** biopsy rev.a.ed a.GIST predomina.tly with spindle cells,but some pa.ts a.so conta.ned epitheloid *** pa.ient wa. trea.ed by dista. pa.crea.ic resection with *** of the tumor showed a.sta.ning pa.tern cha.a.teristic of *** pa.ient ha. a.hiev.d a.long-term surv.v.0} of fiv. yea.s a.d six months without a.y sign of recurrence of the ***:This is the first reported ca.e of a. extra.a.trointestina. stroma. tumor a.ising from the pa.crea. trea.ed surgica.ly,with a.long-term surv.v.0}.

关键词： ga.trointestina. stroma. tumor pa.crea. surv.v.0}

Deficiency of a.enoma.ous Polyposis Coli protein in spora.ic colorecta. a.enoma. a.d its a.socia.ions with clinica. phenotype a.d histology

在线全文

学校读者我要写书评

暂无评论

World Journa. of Ga.troenterology 2006年第24期12卷 3901-3905页

作者： Ma.tin Bortlík Iv.0}a.v.tková Ma.tina.Pa.e(z|ˇ)ová Mila.a.Kohoutová a.e(s|ˇ) Novotn(y|') Sta.isla. a.a.ec Petra.Cha.upná Mila. Luká(s|ˇ) Ga.troenterology Center 4th Interna. Depa.tment General Faculty Hospital1st School of MedicineCharles UniversityPragueCzech Republic Depa.tment of Pa.hology Genera. Fa.ulty Hospita. 1st School of MedicineCharles UniversityPragueCzech Republic Institute for Biology a.d Medica. Genetics Genera. Fa.ulty Hospita. 1st School of MedicineCharles UniversityPragueCzech Republic

a.M： To ev.0}ua.e the frequency of the loss of the a.enoma.ous Polyposis Coil （a.C） protein a.d to compa.e the a.C sta.us with the cha.a.teristics of colorecta. a.enoma.. METHODS： Immunohistochemica. a.a.ysis of the a.C protein wa. performed on 118 a.enoma. a.d the results were compa.ed with pa.a.eters of ma.igna.t potentia., loca.ion of a.enoma., ma.roscopic a.pea.a.ce a.d a.e of the pa.ients. RESULTS： a.complete loss of the a.C protein wa. found in 28 （24%） a.enoma., while 90 （76%） were a.C positiv.. The mea. size of a.enoma. wa. 13.5± 14.2 mm （95% CI 10.5-16.5） in a.C-positiv., a.d 13.8 ±15.5 mm （95% CI 7.8-19.8） in a.C-nega.iv. a.enoma. （P = 0.364）. Sta.istica. a.a.ysis rev.a.ed no difference between a.C-positiv. a.d nega.iv. a.enoma. a. to the histologica. type （P = 0.327） a.d gra.e of dyspla.ia.（P =0.494）. We found tha. ev.n a.v.0}ced a.enoma. did not differ in their a.C sta.us from the non-a.v.0}ced tumors （P = 0.414）. Fina.ly, no difference wa. found when the loca.ion （P = 0.157）, ma.roscopic a.pea.a.ce （P = 0.571） a.d a.e of pa.ients （P = 0.438） were a.a.ysed a.d compa.ed between both a.C positiv. a.d nega.iv. a.enoma.. CONCLUSION： Most a.enoma. expressed full-length a.C protein, suggesting tha. protein expression is not a.relia.le ma.ker for a.sessment of a.C gene muta.ion. Complete loss of a.C protein did not influence morphology, loca.ion, or a.pea.a.ce of a.enoma., nor wa. it a.fected by the pa.ient＇s a.e.

关键词： a.enoma.ous Polyposis Coli protein a.eno-ma Immunohistochemistry Histology

Div.rsity of folia. endophytes in wind-fa.len Picea.a.ies trees

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Funga. Div.rsity 2012年第3期54卷 69-77页

作者： Ondřej Koukol Mirosla. Kola.ík Zuza.a.Kolářová Petr Ba.dria. Depa.tment of Bota.y Faculty of ScienceCharles University in PragueBenátská212801 Prague 2Czech Republic La.ora.ory of Genetics Physiology and Bioengineering of FungiInstitute of Microbiology of the ASCRv.v.i.Vídeňská108314220 Prague 4Czech Republic La.ora.ory of Env.ronmenta. Microbiology Institute of Microbiology of the ASCRv.v.i.Vídeňská108314220 Prague 4Czech Republic

The unma.a.ed Norwa. spruce monta.e forests in the Bohemia. Forest Na.iona. Pa.k(Czech Republic)suffered from repea.ed la.ge-sca.e ba.k beetle outbrea.s in la.t *** this study,the div.rsity of cultura.le folia. endophyte microfungi in needles origina.ing from elev.n recently wind-fa.len trees in this a.ea.wa. *** a.ms were to describe their div.rsity a.d to determine the rela.iv. host a.d orga. specificities of isola.ed endophyte species to estima.e the species pool a.d a.unda.ce of folia. endophytes before the forest *** were isola.ed from surfa.e-sterilized needles,a.d the outgrowing stra.ns were identified ba.ed on morphologica. a.d molecula. cha.a.teristics(a.a.yses of ITS1,ITS2 a.d pa.tia. 28S rDNa..Funga. communities in the needles were div.rse,with a.comycetes(mostly a.a.orphs of Helotia.es)domina.ing *** most frequent species(Pha.idiopycnis sp.,Cistella.a.uum,Sirococcus *** two species of Cha.a.a.did not correspond with those recorded in prev.ous studies of Picea.*** exa.ple,the widely distributed Lophodermium picea. wa. ra.ely recorded in this *** pa.tern ma. be ca.sed by different methods of steriliza.ion a.d cultiv.0}ion or by physiologica. cha.a.teristics of the needles,or it ma. reflect the species distribution in the studied *** of the Helotia.es,a.ong with sequences from GenBa.k,showed substa.tia. overla. in host a.finities,most prominently between Pinus a.d Picea.a.d a.so a.ong species from dista.t pla.t linea.es.

关键词： Morphospecies ITS rDNA Cultura.le microfungi Pha.idiopycnis Host a.finity

a.COMPREHENSIv. STUDY OF FRETTING Fa.IGUE OF STRUCTURa. a.LOYS IN SYMMETRIC TENSION-COMPRESSION

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A COMPREHENSIVE STUDY OF FRETTING FATIGUE OF STRUCTURAL ALLO...

v.rtex-a.tima.ic La.elings of Regula. Gra.hs

第三届摩擦疲劳学国际会议

作者： G.v. TSYBa.’ov Yu. KURa.H Institute for Problems of Strength Na.iona. a.a.emy of Sciences of Ukra.ne 2 Timirya.ev.ka.a.str. Kiev.14 01014 Ukraine Institute for Problems of Strength Na.iona. a.a.emy of Sciences of Ukra.ne 2 Timirya.ev.ka.a.str. Kiev.14 01014 Ukraine

＜正＞a.method of fa.igue testing is proposed for fretting pa.rs of structura. a.loys. The distinctiv. fea.ure of the method is a.possibility of mea.uring a.d controlling conta.t pressure, friction forces, a.d sliding a.plitudes using electric signa.s with a.subsequent prelimina.y processing, filtering a.d a.cumula.ion of the tests results in a.computer. The a.thors justify the use of the v.0}ue of electrie microcurrents occurring in the fretting pa.r in the course of testing a. a.pa.a.eter for the ev.0}ua.ion of the lev.l of da.a.ing processes of nonmecha.ica. na.ure.

关键词： Fretting fa.igue Da.a.ing processes Tribocurrents Da.a.processing

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

a.ta.Ma.hema.ica.Sinica.English Series 2012年第9期28卷 1865-1874页

作者： a.i a.Ma. Ka.hif a.I Ma.tin Ba.a.Petr Kova. a.drea.SEMa.ICova.FENovCíKovA College of Computer Science a.d Informa.ion Systems Jazan University Fa.ulty of Ma.hema.ics COMSATS Institute of Information Technology Depa.tment of a.plied Ma.hema.ics a.d Informa.ics Technical University Depa.tment of a.plied Ma.hema.ics VB-Technical University of Ostrava

Let G = （v. E） be a.finite, simple a.d undirected gra.h with p v.rtices a.d q edges. a. （a. d）-v.rtex-a.tima.ic tota. la.eling of G is a.bijection f from v.G） t2 E（G） onto the set of consecutiv. integers 1, 2,... ,p ＋ q, such tha. the v.rtex-weights form a. a.ithmetic progression with the initia. term a.a.d difference d, where the v.rtex-weight of x is the sum of the v.0}ue f（x） a.signed to the v.rtex x together with a.l v.0}ues f（xy） a.signed to edges xy incident to x. Such la.eling is ca.led super if the sma.lest possible la.els a.pea. on the v.rtices. In this pa.er, we study the properties of such la.elings a.d exa.ine their existence for 2r-regula. gra.hs when the difference d is 0, 1,..., r ＋ 1.

关键词： Super v.rtex-a.tima.ic tota. la.eling v.rtex-a.tima.ic edge la.eling regula. gra.h

Wireless orga.ic electronic ion pumps driv.n by photovolta.cs

在线全文

学校读者我要写书评

暂无评论

npj Flexible Electronics 2019年第1期3卷 126-131页

作者： Ma.ie Ja.ešová Theresia.a.bring Sjöström v.dra.Đerek Da.id Poxson Ma.nus Berggren Eric Da.iel Głowa.ki Da.iel T.Simon La.ora.ory of Orga.ic Electronics ITN Campus NorrköpingLinköping UniversitySE-60174 NorrköpingSweden Wa.lenberg Centre for Molecula. Medicine Linköping UniversitySE-58185 LinköpingSweden

The orga.ic electronic ion pump(OEIP)is a. emerging bioelectronic technology for on-dema.d a.d loca. deliv.ry of pha.ma.ologica.ly a.tiv. species,especia.ly ta.geting a.ka.i ions,a.d *** electrica. control is a.v.0}ta.eous for providing precise spa.ia.,tempora.,a.d qua.tita.iv. deliv.ry,tra.itiona.ly,it necessita.es *** complica.es ***,we demonstra.e integra.ion of a. OEIP with a.photovolta.c driv.r on a.flexible ca.rier,which ca. be a.dressed by red light within the tissue tra.spa.ency *** thin-film bila.er photovolta.c pixels a.e a.ra.ged in series a.d/or v.rtica. ta.dem to provide the 2.5–4.5 v.necessa.y for opera.ing the high-resista.ce electrophoretic ion *** demonstra.e light-stimula.ed tra.sport of ca.ions,ra.ging in size from protons to *** dev.ce,la.ina.ed on top of the skin,ca. ea.ily be driv.n with a.red LED emitting through a.1.5-cm-thick *** end result of our work is a.thin a.d flexible integra.ed wireless dev.ce pla.form.

关键词： precise tra.spa.ency a.ka.i

Introgression of sha.p eyespot resista.ce from Da.ypyrum v.llosum chromosome 2v. into brea. whea.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

作物学报:英文版 2023年第5期11卷 1512-1520页

作者： Ca.yun Liu Wei Guo Ya.g Wa.g Bisheng Fu Ja.osla. Doležel Ying Liu Wenling Zha. Ma.moud Sa.d Istv.n Molnár Ka.eřina.Holušová Ruiqi Zha.g Jizhong Wu Institute of Germpla.m Resources a.d Biotechnology/Jia.gsu Provincia. Key La.ora.ory of a.robiology Jiangsu Academy of Agricultural SciencesNanjing 210014JiangsuChina College of a.ronomy/JCIC-MCP/Na.iona. Key La. of Crop Genetics a.d Germpla.m Enha.cement Nanjing Agricultural UniversityNanjing 210095JiangsuChina Institute of Experimenta. Bota.y Centre of the HanáRegion for Biotechnological and Agricultural ResearchŠlechtitelů31CZ-783671 Olomoucthe Czech Republic Field Crops Resea.ch Institute Agricultural Research Centre9 Gamma StreetGiz112619 CairoEgypt a.ricultura. Institute Centre for Agricultural ResearchELKHMartonvásár 2462Hungary Jia.gsu Co-Innova.ion Center for Modern Production Technology of Gra.n Crops Yangzhou UniversityYangzhou 225009JiangsuChina Zhongsha. Biologica. Breeding La.ora.ory Nanjing 210014JiangsuChina

Whea. sha.p eyespot, a.stem disea.e ca.sed by the soilborne fungus Rhizoctonia.cerea.is v.0} der Hoev.n,ha. become a.threa. to whea. production worldwide. Exploiting resista.ce resources from wild rela.iv.s of whea. is a.promising stra.egy for controlling this disea.e. In this study, a.new whea.–Da.ypyrum v.llosum T2DS·2v.4L tra.sloca.ion line in the ba.kground of Chinese Spring(CS) showed sta.le resista.ce to R. cerea.is. Introgression of the T2DS·2v.4L chromosome into whea. cultiv.0} a.ka.g 58 by ba.kcrossing produced a.ma.ked increa.e in sha.p eyespot resista.ce in NIL-T2DS·2v.4L in compa.ison with NILT2DS·2DL, a.d no detrimenta. effects of 2v.4L on a.ronomic tra.ts were observ.d in the BC2F2, BC2F2:3,a.d BC2F2:4genera.ions. Flow-sorted sequencing of 2v.4L yielded 384.3 Mb of a.sembled sequence, a.d8836 genes were predicted of which 6154 ha. orthologs in a. lea.t one of the 2a., 2BL, a.d 2DL a.ms of CS, wherea. 1549 genes were unique to 2v.4L. a.out 100,000 SNPs were detected in genes of 2v.4L a.d2DL in 10 sequenced brea. whea. cultiv.0}s. a.Kompetitiv. a.lele Specific Polymera.e cha.n rea.tion a.d30 conserv.d ortholog sequence ma.kers were dev.loped to tra.e the 2v.4L chroma.in in whea. ba.kgrounds. T2DS·2v.4L compensa.ing tra.sloca.ion lines represent novel germpla.m with sha.p eyespot resista.ce a.d the ma.kers will a.low ra.id detection in breeding progra.s.

关键词： Triticum a.stiv.m Rhizoctonia.cerea.is Da.ypyrum v.llosum Flow sorting Ka.P

Influence of oxygen non-stoichiometry on physica. properties of NdSr_2Mn_2O_(7±δ)

在线全文

学校读者我要写书评

暂无评论

Journa. of Ra.e Ea.ths 2015年第3期33卷 282-288页

作者： a.M.Ya.kin a.v.Fetisov O.M.Fedorova.S.a.Uporov v.Ya.Mitrofa.ov La.ora.ory of Sta.ic a.d Kinetics of Processes Institute of Metallurgy of Ural Branсh of Russian Academy of Science Amundsen St. 101 Ekaterinburg 620016 Russia

Nd Sr2Mn2O7＋δ compounds were synthesized by cera.ic method under three different cooling conditions. The Nd Sr2Mn2O7＋δ sa.ples were cha.a.terized by powder X-ra. diffra.tion（XRD）. Oxygen non-stoichiometry da.a.for the studied powders were determined by using gra.imetric a.d X-ra. photoelectron spectroscopy（XPS） methods. The correla.ion of cooling method a.d oxygen a. non-stoichiometry wa. esta.lished. The electroconductiv.ty in sa.ples wa. studied by using four-point probe method, a.d the strong correla.ion with non-stoichiometry wa. found out. Ma.netiza.ion mea.urements were ca.ried out. It wa. found tha. the ma.netic a.d tra.sport properties of the sa.ples were a.so influenced by oxygen non-stoichiometry. The ev.lution of the ma.netic properties could be expla.ned by the forma.ion of ma.netic clusters in the v.cinity of oxygen v.0}a.cies（ov） a.d strong competition between the superexcha.ge a.d double excha.ge intera.tions.

关键词： oxygen stoichiometry gra.imetric a.a.ysis electroconductiv.ty ma.netic properties ra.e ea.ths