检索结果-南通市图书馆

Ma.hine Lea.ning Techniques in Predicting Hot Deforma.ion Beha.ior of Meta.lic Ma.eria.s

在线全文

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2025年第1期142卷 713-732页

作者： Petr Opela.Josef Wa.ek Ja.omír Kopecek Depa.tment of Meta.lurgica. Technologies Faculty of Materials Science and TechnologyVSB–Technical University of OstravaOstrava70800Czech Republic FZU—Institute of Physics of the Czech a.a.emy of Sciences Prague18200Czech Republic

In engineering pra.tice,it is often necessa.y to determine functiona. rela.ionships between dependent a.d independent *** rela.ionships ca. be highly nonlinea.,a.d cla.sica. regression a.proa.hes ca.not a.wa.s provide sufficiently relia.le ***,Ma.hine Lea.ning(ML)techniques,which offer a.va.ced regression tools to a.dress complica.ed engineering issues,ha.e been developed a.d widely *** study investiga.es the selected ML techniques to eva.ua.e their suita.ility for a.plica.ion in the hot deforma.ion beha.ior of meta.lic *** ML-ba.ed regression methods of a.tificia. Neura. Networks(a.Ns),Support Vector Ma.hine(SVM),Decision Tree regression(DTr),a.d Ga.ssia. Process regression(GPr)a.e a.plied to ma.hema.ica.ly describe hot flow stress curve da.a.ets a.quired experimenta.ly for a.medium-ca.bon *** the GPr method ha. not been used for such a.regression ta.k before,the results showed tha. its performa.ce is the most fa.ora.le a.d pra.tica.ly unriva.ed;neither the a.N method nor the other studied ML techniques provide such precise results of the solved regression a.a.ysis.

关键词： Ma.hine lea.ning Ga.ssia. process regression a.tificia. neura. networks support vector ma.hine hot deforma.ion beha.ior

Monodisperse Nickel Na.opa.ticles Supported on SiO_(2) a. a. Effective Ca.a.yst for the Hydrolysis of a.monia.Bora.e

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Na.o resea.ch 2010年第9期3卷 676-684页

作者： Önder Metin Sa.mÖzka. Shouheng Sun Depa.tment of Chemistry Middle East Technical University06531AnkaraTurkey Depa.tment of Chemistry Brown UniversityProvidenceRhode Island 02912USA

Monodisperse Ni na.opa.ticles(NPs)ha.e been synthesized by the reduction of nickel(Ⅱ)a.etyla.etona.e with the bora.e–tributyla.ine complex in a.mixture of oleyla.ine a.d oleic *** Ni NPs a.e a. a.tive ca.a.yst for the hydrolysis of the a.monia.bora.e(a.,H3N⋅BH3)complex under a.bient conditions a.d their a.tivities a.e dependent on the chemica. na.ure of the oxide support tha. they were deposited *** va.ious oxides(SiO_(2),a._(2)O_(3),a.d CeO_(2))tested,SiO_(2)wa. found to enha.ce Ni NP ca.a.ytic a.tivity due to the etching of the 3.2 nm Ni NPs giving Ni(Ⅱ)ions a.d the subsequent reduction of Ni(Ⅱ)tha. led to the forma.ion of 1.6 nm Ni NPs on the SiO_(2)*** kinetics of the hydrolysis of a. ca.a.yzed by Ni/SiO_(2)wa. shown to be dependent on ca.a.yst a.d substra.e concentra.ion a. well a. *** Ni/SiO_(2)ca.a.yst ha. a.turnover frequency(TOF)of 13.2 mol H_(2)⋅(mol Ni)^(–1)⋅min^(–1)—the best ever reported for the hydrolysis of a. using a.nickel ca.a.yst,a. a.tiva.ion energy of 34 kJ/mol±2 kJ/mol a.d a.tota. turnover number of 15,400 in the hydrolysis of *** is a.promising ca.dida.e to repla.e noble meta.s for ca.a.yzing a. hydrolysis a.d for hydrogen genera.ion under a.bient conditions.

关键词： Nickel na.opa.ticles supported ca.a.yst hydrogen stora.e hydrolysis of a.monia.bora.e

Seed,germina.ion,a.d seed-reserve tra.ts differ a.ong a. a.titudina. gra.ient

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 Forestry resea.ch 2022年第6期33卷 1903-1912页

作者： Muha.met Tonguç Serca. Önder Nesrin Gülcema. Fa.ih Tonguç Fa.ulty of a.riculture Department of Agricultural BiotechnologyIsparta University of Applied Sciences32260 IspartaTurkey Fa.ulty of Forestry Department of Forest EngineeringIsparta University of Applied Sciences32260 IspartaTurkey

Turkish red pine(P inus brutia.Ten.), a. importa.t pine species for a.foresta.ion studies, grows a. a.wide ra.ge of a.titudes in the ea.tern Mediterra.ea. a.ea. Seeds from low(0–400 m a.s.l.), mid(400–800 m) a.d high(800–1000 m) a.titudina. gra.ients were collected to a.sess the effects of these gra.ients on morphologica. tra.ts(seed length, seed width, 100-seed weight), germina.ion va.ia.les(germina.ion percenta.e a.d mea. germina.ion time), a.d 10biochemica. va.ia.les rela.ed to seed reserves. rela.ionships a.ong these va.ia.les were exa.ined with a.correla.ion a.a.ysis. Seeds from low a.d high a.titudes ha. significa.tly higher 100-seed weight, higher percenta.e germina.ion but longer germina.ion times a.d higher tota. oil a.d reducing suga.s contents. Seeds from mid a.titudes ha. higher ca.otenoid a.d soluble phenolics contents. a.ong the exa.ined biochemica. va.ia.les, only fla.onoid content did not differ a.ong the a.titude gra.ients. The ma.n fa.ty a.ids in seeds sa.ples(linoleic, oleic, pa.mitic a.d stea.ic a.ids) were a.so influenced by the a.titude gra.ients. Oil a.d tota. reducing suga.s contents were positively correla.ed with germina.ion percenta.e, a.d ca.otenoid content wa. nega.ively correla.ed with germina.ion percenta.e. Our results confirmed tha. seed a.d germina.ion va.ia.les, including the reserve composition va.ied significa.tly a.ong the a.titudina. gra.ients.

关键词： Eleva.ion Germina.ion Pine Seed Seed reserves

Emerging potentia. of progra.ulin-dependent SorCS2 signa.ing in hea.thy a.d disea.ed nervous systems

在线全文

学校读者我要写书评

暂无评论

Neura. regenera.ion resea.ch 2025年第9期20卷 2591-2593页

作者： a.ena.Sa.a.ova.a.0}s Nykjær Da.ish resea.ch Institute of Tra.sla.iona. Neuroscience Da.DrITE-Nordic EMBL Pa.tnership for Molecula. Medicine and Centre of Excellence PROMEMODepartment of BiomedicineAarhus UniversityAarhusDenmark

The forma.ion of the ma.ma.ia. nervous system a.d its ma.ura.ion into sensory,motor,cognitive,a.d beha.iora. circuits is a.complex process tha. begins during ea.ly embryogenesis a.d la.ts until young *** neurodevelopm... 详细信息

关键词： progr jointly CS2

Solid Lipid Na.opa.ticles (SLN) a.d Na.ostructured Lipid Ca.riers (NLC): Occlusive Effect a.d Penetra.ion Enha.cement a.ility

在线全文

学校读者我要写书评

暂无评论

Journa. of Cosmetics, Derma.ologica. Sciences a.d a.plica.ions 2015年第2期5卷 62-72页

作者： r. López-Ga.cía.a. ganem-r.nder. División de Estudios de Posgra.o (Tecnología.Fa.ma.éutica. Facultad de Estudios Superiores Cuautitlán Universidad Nacional Autónoma de México Cuautitlán Izcalli Mexico

Objective: This work compa.es the occlusive effect a.d the penetra.ion enha.cement a.ility of solid lipid na.opa.ticles (SLN) a.d na.ostructured lipid ca.riers (NLC), through in vitro skin. Methods: SLN a.d NLC were prepa.ed by high shea. homogeniza.ion a.d cha.a.terized by size, polydispersity index, zeta.potentia., morphology a.d physica. sta.ility. Occlusive effect wa. a.sessed by a. in vitro test a.d by mea.uring TEWL using pig skin. Skin trea.ed with the lipid ca.riers wa. visua.ized by SEM. a.penetra.ion test through skin, followed by ta.e stripping, wa. ca.ried out using Nile red a. a.ma.ker. results: SLN (200 ± 6 nm) a.d NLC (192 ± 11 nm) were obta.ned. a. occlusion fa.tor of 36% - 39% wa. observed for both systems, while a.reduction in TEWL of 34.3% ± 14.8% a.d 26.2% ± 6.5% wa. seen a.ter trea.ment with SLN a.d NLC, respectively. SEM ima.es showed a.film formed by the lipid ca.riers, responsible for the occlusion observed. No differences were found between the occlusive effect produced by SLN a.d NLC in both tests. NLC a.lowed the penetra.ion of a.grea.er a.ount of Nile red tha. SLN: 4.7 ± 1.3 μg a.d 1.7 ± 0.4 μg, respectively. Conclusion: Both ca.riers form a.film on the skin, providing a. occlusive effect with no differences between these two systems. The penetra.ion of a.ma.ker (Nile red) into the stra.um corneum wa. quite higher for NLC tha. for SLN, suggesting a. influence of the composition of these pa.ticles on their penetra.ion enha.cing a.ility.

关键词： Solid Lipid Na.opa.ticles Na.ostructured Lipid Ca.riers Occlusive Effect Tra.sepiderma. Wa.er Loss Skin Penetra.ion

a.comprehensive investiga.ion on nonlinea. vibra.ion a.d bending cha.a.teristics of bio-inspired helicoida. la.ina.ed composite structures

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.plied Ma.hema.ics a.d Mecha.ics(English Edition) 2025年第1期46卷 81-100页

作者： S.Sa.ra.H r.KIra. D.SINGH r.Va.SH V.S.CHa.Ha. School of Mecha.ica. a.d Ma.eria.s Engineering Indian Institute of Technology Mandi

Bio-inspired helicoida. composite la.ina.es, inspired by the intrica.e helica. structures found in na.ure, present a.promising frontier for enha.cing the mecha.ica. properties of structura. designs. Hence, this study provides a.comprehensive investiga.ion into the nonlinea. free vibra.ion a.d nonlinea. bending beha.ior of bio-inspired composite pla.es. The inverse hyperbolic shea. deforma.ion theory(IHSDT) of pla.es is employed to cha.a.terize the displa.ement field, with the incorpora.ion of Green-La.ra.ge nonlinea.ity. The problem is modeled using the C0finite element method(FEM), a.d a. in-house code is developed in the Ma.La. environment to solve it numerica.ly. Va.ious helicoida. la.up configura.ions including helicoida. recursive(Hr), helicoida. exponentia.(HE), helicoida. semi-circula.(HS), linea. helicoida.(LH), a.d Fibona.ci helicoida.(FH)with different la.up sequences a.d qua.i-isotropic configura.ions a.e studied. The model is va.ida.ed, a.d pa.a.etric studies a.e conducted. These studies investiga.e the effects of la.up configura.ions, side-to-thickness ra.io, modulus ra.ios, bounda.y conditions, a.d loa.ing conditions a. different loa. a.plitudes on the nonlinea. vibra.ion a.d nonlinea. bending beha.iors of bio-inspired composite pla.es. The results show tha. the la.ina.e sequence exerts a.substa.tia. impa.t on both nonlinea. na.ura. frequencies a.d nonlinea. bending beha.iors. Moreover, this influence va.ies a.ross different side-to-thickness ra.ios a.d bounda.y conditions of the bio-inspired composite pla.e.

关键词：

a.tisense oligonucleotides provide optimism to the thera.eutic la.dsca.e for ta.opa.hies

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neura. regenera.ion resea.ch 2025年第3期20卷 803-804页

作者： Glenn a.Ha.ris La.ren r.Hirschfeld ra.nwa.er Cha.ita.le Founda.ion Fort WorthTXUSA

Ta.opa.hies a.e a.group of neurodegenera.ive disea.es cha.a.terized by a.norma. meta.olism of the misfolded ta. protein. Ta. is encoded by the microtubule-a.socia.ed protein ta. gene(Ma.T) a.d ca. be cla.sified a. either 3-repea.(3r) or 4-repea.(4r) ba.ed on the number of repea. doma.ns from a.terna.ive splicing of exon 10 of the Ma.T gene.

关键词： ta. meta.olism disea.es

PIEZO1 cha.nels in cuta.eous free nerve endings:novel insights into itch-scra.ch-mecha.isms

在线全文

学校读者我要写书评

暂无评论

Signa. Tra.sduction a.d Ta.geted Thera.y 2023年第2期8卷 319-320页

作者： Ma.uel Pedro Pereira.Henning Wiegma.n Sonja.Ständer Depa.tment of Derma.ology a.d Center for Chronic Pruritus University Hospital Münster48149MünsterGermany

a.recent study published in Na.ure by Hill et a..1 identified mecha.o-sensitive PIEZO1 ion cha.nels in pruriceptive ***,PIEZO1 is involved in a.ute itch tra.smission a.d in mecha.ica. a.loknesis in chronic pruritus(CP... 详细信息

关键词： ZO1 insight scra.ch

a.forming loa. a.a.ysis for extrusion process of a.31 ma.nesium

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tra.sa.tions of Nonferrous Meta.s Society of China 2019年第4期29卷 741-753页

作者： ?nder a.Er Depa.tment of Mecha.ica. Engineering Faculty of Engineering Trakya University Edirne

The effect of extrusion pa.a.eters on the extrusion loa. for a.31 ma.nesium a.loy wa. investiga.ed with the support of numerica. *** this rega.d,the process tempera.ure,extrusion ra.io,friction fa.tor a.d punch velocity were selected a. ma.n pa.a.eters for the ***,the experimenta. results were a.a.yzed by using the finite element method(FEM)a.d a.tificia. neura. network(a.N)method to build a.numerica. model for predicting the forming *** the experimenta. a.d numerica. results were compa.ed to ea.h other a.d it wa. concluded from the results tha. the effect of friction fa.tor on the extrusion loa. is more domina.t a. lower extrusion tempera.ure for a.l given extrusion ra.ios a.d punch *** this,higher extrusion ra.ios require higher process tempera.ures to obta.n the lower extrusion ***,it wa. observed tha. the increa.e in the extrusion speed ca.ses a.significa.t increa.e in the forming loa. for a.l extrusion ra.ios a.d extrusion tempera.ures.

关键词： extrusion ma.nesium a.31 finite element method a.tificia. neura. network