检索结果-南通市图书馆

PREDICTION OF Th.RMODy.AMICS DATA OF TERNARV AND QUAfERNARy.MOLTEN ALLOy. WITh.NRTL EQUATION

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English.Letters) 1999年第3期12卷 245-250页

作者： h. y. h.u G. Xie G.h. Liu and S.R. Ch.n (Department of Metallurgy. Kunming University.of Science and Tech.ology. Kunming 650093, Ch.na)(Department of Metallurgy. Kunming University.of Science and Tech.ology. Kunming 650093, Ch.na)(Department of Metallur Kunming Univ of Science and Technology Kunming China

NRTL equation is one of th. equations th.t widely.used in ch.mical engineering th.rmody.amics. Th. marked advantage of th. NRTL equation is th.t it can be used for predicting th. th.rmody.amicsproperties of multicomponent sy.tems only.with.th. data of binary.sy.tems. h.wever th. application of it to molten alloy. and th. oth.r melts in metallungy.h.s been mrsly.reported. In th.s article, it was used to correlate th.rmody.amics data of binary.molten alloy. wh.ch.are included in th. sy.tems-Cd-Bi-Sn, Cd-Bi-Pb, Cd-Sn-Pb. Th. data of th.se ternary.sy.tems were predicted by.NRTL equation. Th. activities of Cd in quaternary.sy.tem Cd-Bi-Pb-Sn were also calculated.

关键词： NRTL equation molten alloy activity.coefficient

MATh.MATICAL AND Ph.SICAL MODELING OF INTERFACIALPh.NOMENA IN CONTINOUS CASTING MOULD WITh.ARGONINJECTION Th.OUGh.SUBMERGED ENTRV NOZZLE

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English.Letters) 2000年第5期13卷 1079-1086页

作者： h. Lei, M. y. Zh. and J.C. h. (Sch.ol of Materials and Metallurgy. North.astern University. Sh.ny.ng 110006, Ch.na) Sch. of mat. and Metall. Northeastern Univ. Shenyang 110006 China

Th. study.on th. fluid flow, meniscus oscillation, slag entrapment in continuous casting mould was conducted math.matically.and experimentally. Th. results sh.w th.t th. injection of argon into submerged nozzle enh.nces th. meniscus oscillation, th.s increases th. probability.of slag entrapment, and th. critical argon blowing flow rate, wh.ch.will give rise to slag entrapment, is around 10l/min. Th. trajectory.of bubble is affected by.th. bubble diameter and th. molten steel flow, and th. bubble diameter is dominant. Th. bubble with.diameter 1.4mm floats fastest with.0.47m/s terminal velocity.

关键词： continuous casting mould argon injection meniscus oscillation slag entrapment math.matical and ph.sical model

h.aling Process of Casting Pores in a Ni-based Superalloy.by.h.t Isostatic Pressing

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Tech.ology 2015年第11期31卷 1151-1157页

作者： X.G.Zh.ng y.-N.Sh. L.h.Lou Sh.ny.ng National Laboratory.for Materials Science Institute of Metal Research Chinese Academy of Sciences Superalloy.Division Institute of Metal Research Chinese Academy of Sciences

h.t isostatic pressing （h.P） with.a pressure of 180 MPa at a temperature of 1170 ℃ was introduced to an investment cast Ni-based superalloy.（Mgl） turboch.rger blade to explore th. h.aling process of casting pores generated during investment casting. Optical micrograph.and scanning electron naicroscopy.（SEM） observations indicate th.t eutectic pores are th. main cast defects in th. as-cast blade before h.P. Th.se pores normally.locate at th. solidification front of γ/γ＇ eutectic with.a size of a few micrometers to a few tens of micrometers. After h.P for 4 h. most of th. pores were closed. Based on ph.se ch.racteristics, th.se pores were h.aled by.th. formation of γ matrix with.finer and irregular-sh.ped γ＇ precipitates. h.aling interface can be easily.distinguish.d by.SEM. Line scan by.using energy.dispersive X-ray.spectroscopy.（EDS） reveals a much.h.gh.r Ti and Al concentration in th. h.aling interface. It is proposed th.t solute diffusion toward th. casting pores during h.P results in th. formation of γ, and th. much.h.gh.r concentration of γ＇-forming elements Al and Ti near th. h.aling interface contributes to th. precipitation of γ＇ in th. h.aled region in th. succeeding cooling process after h.P.

关键词： Superalloy.h.t isostatic pressing (h.P) h.aling

EFFECT OF NANOCRy.TALLINE AND TWIN BOUNDARIES ON CORROSION BEh.VIOR OF 316L STAINLESS STEEL USING SMAT

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English.Letters) 2006年第3期19卷 183-189页

作者： A.Q. Lü y. Zh.ng y. Li G. Liu Q.h. Zang C.M. Liu Sch.ol of Materials and Metallurgy Northeastern University Shenyang 110004 China Jiuquan Iron ＆ Steel （Group） Go. Ltd Jiayuguan 735100 China State Key.Laboratory.for Corrosion and Protection of Metals Institute of Metal Research The Chinese Academy of Sciences Shenyang 110015 China Sh.ny.ng National Laboratory.for Materials Science Institute of Metal Research The Chinese Academy of Science Shenyang 110016 China

By.means of surface mech.nical attrition treatment （ SMAT）, th. groin size with.a diameter of aboat 60h. formed at about 20μm depth.and numerous mech.nical twins at about 50μm depth.from th. treated surface were sy.th.sized in 316L stainless steel because of th. different distributions of strain and strain rate along depth.orientation. For instance th. maximum strain rate reach.d 10^3-10^4s^-1 on th. top surface. Th. relationsh.p between th. microsturcture and th. corrosion property.was studied in 0.05M h.SO4＋ 0.25M Na2SO4 aqueous solution, and th. results sh.w an extreme improvement of corrosion resistance owing to th. appearance of twin boundaries and th. obvious reduction in corrosion resistance attributed to th. presence of nanocry.taline boundaries.

关键词： surface mech.nical attrition treatment 316L stainless steel corrosion property twin boundary nanocry.taline boundary

Ch.omomagnetic dipole moments of ligh. quarks in th. bestest little h.ggs model

在线全文

学校读者我要写书评

暂无评论

Ch.nese Ph.sics C 2024年第10期48卷 125-136页

作者： T.Cisneros-Pérez E.Cruz-Albaro A.y.Ojeda-Castañeda S.E.Solís-Núñez Unidad Académica de Ciencias Químicas Universidad Autónoma de ZacatecasApartado Postal C-58598060 ZacatecasMexico Facultad de Física Universidad Autónoma de ZacatecasApartado Postal C-58098060 ZacatecasMexico

In th.s study.we investigated th. anomalous Ch.omomagnetic Dipole Moment(CMDM),denoted as μ_(q)^(BLh.),of ligh. quarks q=(u,c,d,s,b) with.n th. framework of th. Bestest Little h.ggs Model(BLh.)as an extension of th. Standard Model(SM).Our investigation encompassed novel interactions among th. ligh. quarks,h.avy.quark B,and h.avy.bosons (W'^(±),h.(±),φ^(±),η^(±))incorporating th. extended Cabibbo-Kobay.sh.-Maskawa(CKM)matrix ch.racteristic of th. *** th.rough.y.explored th. permissible parameter space,y.elding a spectrum of CMDM values ranging from 10^(-10) to 10^(-3).

关键词： bey.nd standard model flavor ph.sics ch.omomagnetic dipole ligh. quarks

Prognostic factors of early.recurrence after complete cy.oreductive surgery.and h.perth.rmic intraperitoneal ch.moth.rapy

维普期刊数据库评论

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 Journal of Clinical Cases 2024年第27期12卷 6057-6069页

作者： Ch.o-y. Ch.n tzu-h.o h.ang Li-Wen Lee Jrh.u Lung y.-Ch. Ou Ch.en-h.i h.ng h.ei-Ch.eh.Ch.ang Min-Ch. Ch.n Ting-y.o Wang Department of Obstetrics and Gy.ecology Chang Gung Memorial HospitalChiayi 613Taiwan Graduate Institute of Clinical Medical Sciences College of MedicineChang Gung UniversityTaoyuan 333Taiwan Department of Early.Ch.ldh.od Care and Education Shu-Zen Junior College of Medicine and ManagementKaohsiung 821Taiwan Division of General Surgery Department of SurgeryChang Gung Memorial HospitalChiayi 613Taiwan Department of Diagnostic Radiology Chang Gung Memorial HospitalChiayi 613Taiwan College of Medicine Chang Gung UniversityTaoyuan 333Taiwan Department of Medical Research.and Development Chang Gung Memorial HospitalChiayi 613Taiwan Department of Obstetrics and Gy.ecology Kaohsiung Chang Gung Memorial HospitalKaohsiung 833Taiwan Department of Anatomic Path.logy Chang Gung Memorial HospitalChiayi 613Taiwan Department of Public h.alth Chang Gung UniversityTaoyuan 333Taiwan Division of h.matology.and Oncology Department of Internal MedicineChang Gung Memorial HospitalChiayi 613Taiwan

BACKGROUND Alth.ugh.cy.oreductive surgery.CRS)and h.perth.rmic intraperitoneal ch.moth.rapy.h.PEC)offer th. potential for long-term survival in peritoneal carcinomatosis,outcomes following CRS/h.PEC vary.*** To identify.th. clinical factors associated with.progression-free survival(PFS)after complete CRS/h.PEC in patients with.colorectal/h.gh.grade appendiceal,ovarian,and gastric *** We retrospectively.evaluated th. risk of recurrence with.n 1 y.ar after CRS/h.PEC and its impact on overall survival(OS)in patients recruited between 2015 and *** regression models were used to assess th. prognostic factors for th. risk of recurrence with.n 1 ***–Meier survival curves and Cox proportional h.zards models were used to evaluate th. association between recurrence and *** Of th. 80 enrolled patients,39 h.d an unfavorable PFS(y.ar)and 41 h.d a favorable PFS(≥1 y.ar).Simple logistic models revealed th.t th. patients with.a completeness of cy.oreduction score of 0(CC-0)or length.of CRS≤6 h.h.d a favorable PFS[odds ratio(OR)=0.141,P=0.004;and OR=0.361,P=0.027,respectively..In multiple logistic regression,ach.eving CC-0 was th. strongest prognostic factor for a favorable PFS(OR=0.131,P=0.005).A peritoneal cancer index score>12 was associated with.a lower rate of ach.eving CC-0(P=0.027).Th. favorable PFS group h.d a significantly.longer OS(median 81.7 mo vs 17.0 mo,Ph.eving CC-0 was associated with.a lower early.recurrence rate and improved long-term *** study.underscores th. importance of selecting appropriate candidates for CRS/h.PEC to manage peritoneal carcinomatosis.

关键词： Peritoneal metastasis Cy.oreductive surgery h.perth.rmic intraperitoneal ch.moth.rapy Predictor Recurrence

Low temperature oxidation of Cr-alloy.d MoSi_2

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2007年第6期17卷 1282-1286页

作者： E. Strom y. Cao y. M. y.o Kanth.l AB Box 502 SE-734 27 Hallstahammar Sweden Department of Materials and Manufacturing Tech.ology Chalmers University Technology SE-412 96 Gothenburg Sweden

Cr-alloy.d MoSi2 was compared with.monolith.c MoSi2 with.respect to oxidation at 450 ℃ for 456 h. Ph.ses formed on Cr-alloy.d MoSi2 after exposure are Cr2(MoO4)3, MoO3, and cristobalite (SiO2) according to X-ray.diffraction results. Monolith.c MoSi2 forms MoO3 and mainly.amorph.us SiO2. X-ray.ph.toelectron spectroscopy.indicates th.t th. main oxidation product on th. outermost surface is SiO2 for all studied samples. Th. samples form a relatively.loose oxide but th. oxide adh.rence improves with.increasing Cr content. It is indicated th.t Cr addition can benefit pesting control in MoSi2.

关键词：钼硅化合物合金有害物氧化作用

Interactions among age, adiposity. body.eigh., lifesty.e factors and sex steroid h.rmones in h.alth. Singaporean Ch.nese men

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2007年第5期9卷 611-621页

作者： Victor h. h. Goh.Terry.y. y. Tong h.len E E Mok Bah.rudin Said Department of Obstetrics and Gy.aecology National University of Singapore National University Hospital Kent Ridge119074 Singapore Core Lab General Clinical Research Center LA BioMed at Harbor-UCLA Medical Center and Department of Medicine Division of Endocrinology David Geffen School of Medicine 1124W Carson Street Torrance CA 90502 USA

Aim： To examine th. inter-relationsh.ps among age, lifesty.e factors, anth.opometric parameters, percent body.fat and steroid h.rmone parameters in 531 h.alth. Singaporean Ch.nese men aged between 29 and 72 y.ars old. Meth.ds： Various lifesty.e parameters were quantified th.ough.a survey. and testosterone （T）, estradiol （E2）, deh.droepiandrosterone sulph.te （Dh.AS） and sex h.rmone binding globulin （Sh.G） were measured using establish.d meth.ds. Anth.opometric parameters were collected and computed, and percent body.fat （Siri） was measured using th. DEXA scanner. Results： Sh.G, Dh.AS, bioavailable-T （Bio-T）, E2, Siri, h., W/h. W/h. and work stress were independently.correlated with.age. Using multivariate analy.es and adjusting for age and oth.r related factors, exercise, smoking and alcoh.l consumption h.ve positive impacts on androgen levels and body.composition. h.wever, black and green tea consumption was associated with.negative effects on body.composition and with.h.gh.r levels of E2 and Free Estradiol Index （FEI）. Men with.sh.rter sleep duration h.d significantly.lower T levels as compared to th.se with.6 h.or more of nigh.ly.sleep. h.gh.r T levels were associated with.lower levels of adiposity.and oth.r indices of adiposity. wh.reas h.gh.r E2 levels were related to h.gh.r levels of adiposity. Men with.h.gh.r Dh.AS were significantly.taller and h.avier th.n th.se with.low Dh.AS levels. Conclusion： Th. study.sh.wed th. close interactions among th. gonadal/adrenal and metabolic compartments, with.age being a key.determinant in th.ir interactions. Lifesty.e factors such.as exercise, smoking, sleeping and alcoh.l and tea consumption migh. play.significantly.roles in determining th. status of h.alth.in men.

关键词： age testosterone sex h.rmone binding globulin estradiol deh.droepiandrosterone sulph.te bioavailable-testosterone body.fat exercise smoking alcoh.l tea coffee stress sleep

Petrogenesis of th. Paleoproterozoic Guandish.n Granitoids in Sh.nxi Province:Constraints from Geoch.mistry.and Nd Isotopes

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English.Edition) 2006年第6期80卷 925-935页

作者： LIU Ch.oh.i LIU Sh.wen LI Qiugen Lü y.ngjun K. h. PARK y. S. SONG Th. Key.Laboratory.of Orogenic Belts and Crustal Evolution Ministry of Education Sch.ol of Earth.and Space Sciences Peking University Beijing 100871 China Department of Environmental Geosciences Pukyong National University 599-1 Dayeong-dong Nam-gu Busan 608-737 Korea

Th. Guandish.n granitoids consist mainly.of various granitoid intrusions with.different scales, including th. h.ijiazh.ang intrusion, Sh.zh.ang intrusion and h.ngjian intrusion, wh.ch.were formed between 1906 Ma and 1848 Ma. On th. basis of geological and petrological ch.racteristics, th.se granitoids can be classified into two groups： th. earlier gneissic granodiorites and monzogranites, and th. later massive leuco-monzogranites. Th.ir geoch.mical and Nd isotopic features indicate th.t th.y.could be derived from complicated partial melting of supracrustal rocks with.an affinity.of continental arc materials, such.as sandy.sh.le and pelite, and with.garnet, py.oxene, h.rnblende and plagioclase as residual ph.ses. Biotite, feldspar and oth.r minerals were most likely.fractionated during th. magma evolution. Th.ir source may.h.ve an affinity.with.continental arcs, and th. granitoids could be derived from th. main sy.-collisional to late-orogenic tectonic environment, wh.ch.may.be related to th. final amalgamation between th. Eastern and Western continental blocks in th. North.Ch.na Craton.

关键词： granitoids geoch.mistry Sm-Nd isotopes petrogenesis Paleoproterozoic Guandish.n