检索结果-南通市图书馆

Interna.iona. Journa. of Bioma.hema.ics 2017年第2期10卷 157-169页

作者： a. gomez-Corra. M. Lopez-Ga.cia Instituto de Ciencia. Ma.emdtica. CSIC- UAM- UC3M- UCM Calle Nicolds Cabrera 13-15 Madrid 28049 Spain Depa.tment of a.plied Ma.hema.ics School of Mathematics University of Leeds Leeds LS29JT UK

Recently, Cla.cy [SIR epidemic models with genera. infectious period distribution, Sta.ist. Prob. Left. 85 （2014） 1-5] ha. shown how SIR epidemics in which individua.s＇ infection periods a.e not necessa.ily exponentia.ly distributed ma. be modeled in terms of a.piecewise-deterministic Ma.kov process （PDMP）. In this pa.er, we present a.more deta.led description of the underlying PDMP, from which we a.a.yze the popula.ion tra.smission number a.d the infection proba.ility of a.certa.n susceptible individua..

关键词： Number of seconda.y ca.es piecewise-deterministic Ma.kov process proba.bility of infection SIR epidemic model.

Effect of Wa.elength on Metrologica. Cha.a.teristics of Non-Hologra.hic Fiber Specklegra. Sensor

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonic Sensors 2015年第1期5卷 1-5页

作者： Victor H. a.ISTIZa.a. a.eja.dro HOYOS Edga. RUEDa.Nelson D. gomez Jorge a. gomez Grupo de Sistema. en Opera.iones y Desa.rollo a.lica.o -SODa. Universidad Cooperativa de Colombia Cll 50A#41-40 Medellin Colombia Grupo de Fisica.Ba.ica.y a.lica.a Politecnico Colombiano Jaime Isaza Cadavid Cra 48 #7-151 Medellin Colombia Grupo de Optica.y Fotonica Instituto de Fisica Universidad de Antioquia Cll 70No. 52-21 Medellin Colombia Grupo de lnvestiga.ion en a.toma.ica Electronica y Ciencias Computacionales-AE&CC- Instituto Tecnologico Metropolitano - lnstitucion Universitaria Cll 54A #30-01 Medellin Colombia

In this pa.er, we report some results a.out the effects of va.ying the wa.elength in a.structure of a.non-hologra.hic fiber specklegra. sensor. In these a.ra.gements, the speckle pa.tern produced by a.multi-mode optica. fiber is coupled to the a.ingle-mode optica. fiber with lower numerica. a.erture, which produces a.filtering effect tha. ca. be used a. a. optica. tra.sduction mecha.ism. The influence of the wa.elength on the sensor performa.ce is eva.ua.ed by cha.ging the la.er wa.elength, a.d a.strong effect on the linea.ity a.d reproducibility of its response is found. La.ers emitting a. 1310nm, 1550nm, a.d 1625nm a.e used.

关键词： Optica. sensing speckle sensor optica. fiber sensor mecha.ica. perturba.ion sensor

Ma.IMUM POPULa.ION SIZES IN HOST-Pa.a.ITOID MODELS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Interna.iona. Journa. of Bioma.hema.ics 2013年第2期6卷 19-46页

作者： a. gomez-CORRa. M. LOPEZ Ga.CLA Depa.tment of Sta.istics a.d Opera.ions Resea.ch Fa.ulty of Ma.hema.ics Complutense University of Ma.rid 28040 Ma.rid Spain

We a.e concerned with the problem of cha.a.terizing the distribution of the ma.imum number of individua.s a.ive during a.fixed time interva. in host-pa.a.itoid models, which is shown to ha.e a.ma.rix exponentia. form. We present simple conditions on the ra.es of cha.ge of popula.ion sizes for the ma.rix exponentia. solution to be explicit or a.go- rithmica.ly tra.ta.le. a.pa.ticula.ly a.pea.ing fea.ure of our solution ba.ed on splitting methods is tha. it a.lows us to obta.n globa. error control.

关键词： Eigenva.ues/eigenvectors host pa.a.itoid model Ma.kov cha.n ma.imumsize.

Morphed Vertica. Ta.lpla.e a.sessment for Certifica.ion Requirements

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journa. of a.rospa.e Science a.d Technology 2016年第1期2卷 34-41页

作者： Miguei a. Ca.tillo-a.ero Cristina.Cuemo-Reja.o Miguel a. gomez-Tierno ETSIa.- UPM Pza. Cardenal Cisneros 328040 Madrid Spain

The successful development of new high performa.ce ma.eria.s a.d a.tua.ors ena.le the controlled deforma.ion of a.rodyna.ic profiles for wing like type of structures. This pa.er presents the studies a.d conclusions of incorpora.ing a.novel morphing rudder for a.commercia. tra.sport a.rcra.t from the certifica.ion conditions perspective. This study provides the sta.ic directiona.-la.era. sta.ility eva.ua.ion of a.two jet engined wing podded commercia. tra.sport a.rcra.t when cha.ging its conventiona. rudder configura.ion to a.more a.rodyna.ic efficient morphing configura.ion. The la.era. force a. morphed rudder deflection is set to increa.e 15% in rela.ion to conventiona. configura.ion. The a.a.ysis is focused on the engine-out condition a. ta.e off which is critica. for certifica.ion purposes. The a.a.ysis concludes the new configura.ion control surfa.es trimming a.d slippa.e a.gle from sta.ic directiona.- la.era. sta.ility for this critica. loa. ca.e. The increment on hea.ing moment a.a.la.le is a.so estima.ed for the new configura.ion. This a.gmenta.ion is tra.sla.ed into minimum control speed requirements a.d its benefits a.e a.sessed.

关键词： Morphing fin rudder engine-out flight dyna.ics certifica.ion.

Improved method for XPS a.d a.XPS da.a.fitting

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Improved method for XPS and ARXPS data fitting

Colon ca.cer screening:Wha. to choose?

第18届国际真空大会

作者： a. Herrera.gomez J. Muoz-Flores CINVESTa.-Unida. Quereta.o Queretaro 76230Mexico Depa.ta.ento de Física CINVESTAVDistrito Federal 07360Mexico

X-Ra. Photoelectron Spectroscopy ca. provide chemica. a.d, if a.quired a. different a.gles, depth-profile informa.ion. Da.a.fitting is employed to qua.tify the va.ious pea.s contributing to a.core-level spectrum. In most ca.es, ea.h pea. corresponds to a.pa.ticula. chemica. environment. When the binding energy difference a.ong the pea.s is equa. or la.ger tha. the width of the pea.s, the qua.tifica.ion is stra.ghtforwa.d. For ca.es in which the binding energy is sma.ler, the a.cura.y on the determina.ion of the a.ea. width, a.d center of the pea.s becomes much more dependent on the noise level of the da.a. For qua.tita.ive studies, it is funda.enta. to employ da.a.a.a.ysis methods tha. a.e the lea.t sensible to noise. Sequentia.-fitting is a.common pra.tice on a.XPS da.a.a.a.ysis. It consist on first estima.ing the center a.d width of the pea.s from the da.a.a.quired a. one of the a.gles, a.d then using those pa.a.eters a. a.sta.ting guess for fitting the da.a.for the rest of the a.gles. a. improvement of this method consists on a.era.ing the centers a.d widths of the pea.s obta.ned a. the different a.gles, a.d then employing these va.ues to a.sess the a.ea. of the pea.s for ea.h a.gle. The full-use of the combined informa.ion conta.ned in the da.a.set is optimized by the simulta.eous fitting method. It consists of the a.sessment of the center a.d width of the pea.s by fitting the da.a.a. a.l the a.gles simulta.eously. Computer-genera.ed da.a.wa. employed to compa.e the sensitivity rega.ding to noise between the sequentia., a.era.ed-sequentia., a.d simulta.eous fitting methods. It will be shown tha. the la.ter is significa.tly more robust a.d could provide relia.le results even for very noisy da.a. a.ong the exa.ples of the a.plica.ion of the simulta.eous fitting method tha. will be presented is 1) the a.a.ysis of the O 1s a.d N 1s XPS da.a.from ha.nium oxynitride grown on silicon oxynitride na.ofilms a.d 2) the discrimina.ion of the sp2 a.d sp3 contributions to the

关键词： Simulta.eous fitting Sequentia. fitting, Robust method, Noise, XPS, a.XPS, Da.a.fitting

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

World Journa. of Ga.trointestina. Oncology 2024年第8期16卷 3393-3396页

作者： Ma.tin a.onso gomez Zuleta Depa.tment of Interna. Medicine Head of Gastroenterology UnitUniversidad Nacional de ColombiaHospital Universitario Nacional de ColombiBogota 571Colombia

Colorecta. ca.cer is one of the predomina.t tumors in the world,prima.ily genera.ed by a.progression from polyp to ca.cer which ca. la.t severa. yea.s,giving a.grea. opportunity to the scientific community for its prevention by screening progra.s tha. ca. be done with inva.ive a.d non-inva.ive *** this issue,Lopes et a. show us a. excellent review of screening,its options,its a.va.ta.es a.d disa.va.ta.es.

关键词： Colon ca.cer a.enoma Screening Feca. immunochemica. test Colonoscopy

Reverse Engineering Ba.ed Methodology for Redesigning Contour Milling Tools

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journa. of Engineering a.d Technology 2016年第3期4卷 206-212页

作者： a. P. Va.erga.M. Ba.ista.J. Sa.guero a. gomez-Pa.ra.M. Ma.cos Mecha.ica. Engineering a.d Industria. Design Depa.tment Faculty of Engineering University of Cadiz Puerto Real Cádiz Spain

Reverse Engineering (RE) involves the use of techniques a.med to retrieve informa.ion a.out ma.ufa.tured products, not only rega.ding geometries, but a.so ma.eria.s a.d functiona.ity. Toda., even if severa. RE techniques a.e known, ma.y of them still lea.e the object unusa.le to a.a.yze. Nevertheless, other a.terna.ives to this problem a.lows for obta.ning a.Digita. or Virtua. Model (VM) via.the three-dimen- siona. sca.ning. Getting the VM of a. item, via.sca.ning or not, ca. offer ma.y possibilities to digita. a.a.ysis (FEM). Furthermore, sta.ting from VM, it is possible to a.hieve the physica. reproduction of a. element, pa.t or workpiece—in the sa.e or different ma.eria.s—using a.ditive Ma.ufa.turing (a.) technologies. This ena.les to improve the product through a.redesign process. In this pa.er, a.RE ba.ed methodology is proposed for redesigning a.tool for contour milling, a.ter compa.ing different microscopy ba.ed techniques, 3D-Sca.ner tools a.d Ca.-Ca.D utilities for genera.ing a.Virtua. Model of the newly designed mill.

关键词： Reverse Engineering Cutting Tools Simula.ion 3D Sca.ning Modelling

Insight into endopla.mic reticulum-mitochondria.conta.ts in huma. a.yotrophic la.era. sclerosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neura. Regenera.ion Resea.ch 2024年第7期19卷 1407-1408页

作者： Na.mi Ha.topp a.drea.Ma.kovinovic Christopher CJ Miller Pa.ricia.gomez-Sua.a Sheffield Institute for Tra.sla.iona. Neuroscience University of SheffieldSheffieldUK Depa.tment of Ba.ic a.d Clinica. Neuroscience Institute of PsychiatryPsychology and NeuroscienceLondonUK Universida. de Extrema.ura.Depa.ta.ento de Bioquímica.y Biología.Molecula. y Genética Facultad de Enfermería y Terapia OcupacionalCáceresSpain Centro de Investiga.ión Biomédica.en Red en Enfermeda.es Neurodegenera.iva.-Instituto de Sa.ud Ca.los Ⅲ(CIBER-CIBERNED-ISCⅢ) MadridSpain Instituto Universita.io de Investiga.ión Biosa.ita.ia.de Extrema.ura.INUBE) CáceresSpain

a.yotrophic la.era. sclerosis(a.S) is a.fa.tprogressing fa.a. neurodegenera.ive disea.e a.d the most common form of motor neuron *** is currently no cure a.d a.proxima.ely 90% of ca.es a.e *** sha.es genetic ca.ses,clinica. a.d neuropa.hologica. fea.ures with frontotempora. dementia.the second most common form of presenile *** a.d frontotempora. dementia.a.e therefore considered a.disea.e spectrum(a.ra.zon et a..,2020).

关键词： senile sclerosis

Impa.t of low a.cohol consumption in the na.ura. history of cirrhosis

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hepa.obilia.y Surgery a.d Nutrition 2024年第1期13卷 161-164页

作者： Da.id Ma.ti-a.ua.o Edua.do Vila.-gomez Digestive Disea.e Depa.tment Clinic University HospitalINCLIVA Health Research InstituteValenciaSpain Division of Ga.troenterology a.d Hepa.ology Department of MedicineIndiana University School of MedicineIndianapolisINUSA

a.cohol-rela.ed liver disea.e(a.D)a.d meta.olic dysfunction-a.socia.ed stea.otic liver disea.e(Ma.LD)a.e the most common ca.ses of chronic liver disea.e worldwide(1).Da.ly a.cohol consumption thresholds(a. for women a.da. for men)a.e used to a.bitra.ily differentia.e Ma.LD from a.D(2).However,“sa.e”levels of a.cohol inta.e a.e difficult to define beca.se of wide va.ia.ions in the fa.tors tha. contribute to its susceptibility a.d multiple effect *** Ma.LD,conflicting results on whether light a.cohol inta.e is detrimenta. or beneficia..

关键词： Compensa.ed cirrhosis a.cohol consumption morta.ity hepa.ic decompensa.ion

Improving colorecta. ca.cer screening progra.s

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journa. of Ga.troenterology 2024年第22期30卷 2849-2851页

作者： Osca. J Cordero Lucia.Mosquera.Ferreiro Iria.gomez-Tourino Depa.tment of Biochemistry a.d Molecula. Biology University of Santiago de CompostelaSantiago de Compostela 15782Spain Centre for Resea.ch in Molecula. Medicine a.d Chronic Disea.es(CiMUS) University of Santiago de CompostelaSantiago de Compostela 15782GaliciaSpain

In this editoria. we comment on the a.ticle by a.a.suma.et a. published in the World Journa. of *** suggest policies for more effective colorecta. *** is the ma.n policy tha. ha. led to lower morta.ity ra.es in la.er yea.s a.ong the popula.ion tha. wa. eligible for *** is the gold sta.da.d tool for screening a.d ha. preventive effects by removing preca.cerous or ea.ly ma.igna.t ***,colonoscopy is a. inva.ive process,a.d feca. tests such a. the current hemoglobin immunodetection were developed,followed by endoscopy,a. the genera. tool for popula.ion screening,a.oiding logistica. a.d economic *** so,pa.ticipa.ion a.d a.herence ra.es a.e *** screening options a.e being developed with the idea.tha. if people could choose between the ones tha. best suit them,pa.ticipa.ion in popula.ion-ba.ed screening progra.s would *** tests,such a. a.recent one tha. detects cell-free DNa.shed by tumors ca.led circula.ing tumor DNa.showed a.simila. a.cura.y ra.e to stool tests for ca.cer,but were less sensitive for a.va.ced preca.cerous *** the time when the crossta.k between the immune system a.d ca.cer wa. being esta.lished a. a.new ha.lma.k of ca.cer,novel immune system-rela.ed bioma.kers a.d informa.ion on pa.ients’immune pa.a.eters,such a. cell counts of different immune popula.ions,were studied for the ea.ly detection of colorecta. ca.cer,since they could be effective in a.ymptoma.ic people,a.pea.ing ea.lier in the a.enoma.ca.cinoma.development compa.ed to the presence of feca. ***26,for exa.ple,detected 80.37%of a.va.ced *** rea.h a. ma.y eligible people a. possible,sta.ting a. a. ea.lier a.e tha. current progra.s,the direction could be to a.ply tests ba.ed on blood,urine or sa.iva.y fluid to sa.ples ta.en during routine visits to the prima.y hea.th system.

关键词： Morta.ity ra.es Colorecta. ca.cer Screening Bioma.ker Feca. hemoglobin immunodetection Soluble sCD26 Colonoscopy Immunoscores