检索结果-南通市图书馆

Cytoplasmic DnA: sources, sensing, and role in aging and disease

在线全文

学校读者我要写书评

暂无评论

四川生理科学杂志 2024年第4期46卷 89-89页

作者： Karl n Miller Aging Cancer and Immuno-oncology Program Sanford Burnham Prebys Medical Discovery Institute La Jolla CA 92037 USA Department of Physiology and Biomedical Engineering Mayo Clinic Rochester MN 55905 USA Robert and Arlene Kogod Center on Aging Mayo Clinic Rochester MN 55905 USA Institute for Cell and Molecular Biosciences & newcastle University Institute for Ageing Newcastle upon Tyne NE4 5PL UK International Institute of Molecular Mechanisms and Machines Polish Academy of Sciences 02-109 Warsaw Poland

Endogenous cytoplasmic DnA(cytoDnA)species are emerging as key mediators of inflammation in diverse physiological and pathological *** the role of endogenous cytoDnA in innate immune activation is well established,the cytoDnA species themselves are often poorly characterized and difficult to distinguish,and their mechanisms of formation,scope of function and contribution to disease are incompletely understood.

关键词： endogenous inflammation incomplete

Unexpected creep behavior in a rejuvenated metallic glass

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2023年第32期163卷 140-149页

作者： J.P.Wu y.lin f.H.Duan Q.Chen H.T.Wang n.li J.l.Wen J.Pan l.liu Shenyang national laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China State Key laboratory of Material Processing and Die&Mould Technology and School of Materials Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China laboratory of nanomaterials&nanomechanics Department of Mechanical EngineeringCity University of Hong KongHong KongChina Wuhan national High Magnetic field Center Huazhong University of Science and TechnologyWuhan 430074China Shenzhen Polytechnic Shenzhen 518055China

Rejuvenation,bringing metallic glasses(MGs)to the younger and higher energy states,provides an alternative avenue to explore the interplay between the property and microstructures of *** this study,the creep behavior of the Zr_(69.5)Cu_(12)ni_(11)Al_(7.5)MGs was experimentally examined by controlling the energy state in terms of structural rejuvenation and thermal *** is found that compared to the as-cast counterpart,the annealed MG at a lower energy state exhibits a higher hardness,a smaller displacement,and a lower creep rate due to the decreased free volume and the inhibited activation of the shear transformation ***,the rejuvenated MG at a high energy state displays lower hardness and increased free volume content,yet it demonstrates superior creep resistance compared to its as-cast counterpart,which deviates from conventional *** unexpected phenomenon occurs as the initial high-content free volume annihilates during creep,and strain hardening takes precedence over strain softening as the prevailing process during creep deformation,leading to a superior creep performance in extremely rejuvenated MGs.

关键词： Metallic glass Energy state Rejuvenation Creep Strain-hardening

Optimizing laser coupling,matter heating,and particle acceleration from solids using multiplexed ultraintense lasers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Matter and Radiation at Extremes 2024年第4期9卷 16-28页

作者： Weipeng yao Motoaki nakatsutsumi Sébastien Buffechoux Patrizio Antici Marco Borghesi Andrea Ciardi Sophia n.Chen Emmanuel d’Humières laurent Gremillet Robert Heathcote Vojtech Horny Paul McKenna Mark n.Quinn lorenzo Romagnani Ryan Royle Gianluca Sarri yasuhiko Sentoku Hans-Peter Schlenvoigt Toma Toncian Olivier Tresca laura Vassura Oswald Willi Julien fuchs lUlI-CnRS CEASorbonne UniversitéEcole PolytechniqueInstitut Polytechnique de ParisF-91128 Palaiseau CedexFrance Sorbonne Université Observatoire de ParisUniversité PSLCNRSLERMAF-75005 ParisFrance InRS-EMT 1650 BoulLionel-BouletVarennesQuebec J3X 1S2Canada Center for Plasma Physics School of Mathematics and PhysicsQueen’s University BelfastBelfast BT71NNUnited Kingdom “Horia Hulubei”national Institute for Physics and nuclear Engineering 30 Reactorului StreetRO-077125 Bucharest-MagureleRomania University of Bordeaux Centre Lasers Intenses et ApplicationsCNRSCEAUMR 5107F-33405 TalenceFrance CEA DAMDIFF-91297 ArpajonFrance Université Paris-Saclay CEALMCE91680 Bruyères-le-ChatelFrance Central laser facility STFC Rutherford Appleton LaboratoryDidcotUnited Kingdom SUPA Department of PhysicsUniversity of StrathclydeGlasgow G40NGUnited Kingdom Department of Physics University of NevadaRenoNevada 89557USA Institute of laser Engineering Osaka University2-6 YamadaokaSuitaOsaka 565-0871Japan Institut fur laser und Plasmaphysik Heinrich Heine Universitat DusseldorfDusseldorfGermany

Realizing the full potential of ultrahigh-intensity lasers for particle and radiation generation will require multi-beam arrangements due to technology ***,we investigate how to optimize their coupling with solid ***,we show that overlapping two intense lasers in a mirror-like configuration onto a solid with a large preplasma can greatly improve the generation of hot electrons at the target front and ion acceleration at the target *** underlying mechanisms are analyzed through multidimensional particle-in-cell simulations,revealing that the self-induced magnetic fields driven by the two laser beams at the target front are susceptible to reconnection,which is one possible mechanism to boost electron *** addition,the resistive magnetic field generated during the transport of the hot electrons in the target bulk tends to improve their *** simulations also indicate that such effects can be further enhanced by overlapping more than two laser beams.

关键词： laser acceleration particle

STUDy THE InflUEnCE Of H_(3)BO_(3)On THE ZInC ElECTROPlATInG USInG ElECTROCHEMICAl nOISE TECHnIQUE

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 Metallurgica Sinica(English letters) 2004年第5期17卷 661-666页

作者： Z.Zhang C.S.Wu Q.y.Cai y.l.Cheng f.H.Cao J.Q.Zhang C.n.Cao DepartmentofChemistry ZhejiangUniversityHangzhou310027China StateKeylaboratoryforCorrosionandProtection InstituteofMetalResearchTheChineseAcademyofSciencesShenyang110016China

The influence of H3BO3 on the zinc electroplating was studied using electrochemical noise technique, cyclic voltammetry and steady-state polarization method. The results showed that, under the experimental conditions, the deposition of zinc followed the mechanism of two-dimensional nucleation and subsequent grain growth. The addition of H3BO3 into the electroplating solution prominently changes the nucleation and growth kinetics of zinc deposits, which is directly related to the features of electrocrystallization noise and the corresponding structure of the electrodeposits. The results also shown that the electrochemical noise (En) technique can give more information about the electrodeposits structure and electroplating mechanism than other normal electrochemical measurements can give, such as steady-state polarization method and cyclic voltammetry technique.

关键词： zinc electroplating electrochemical noise electrocrystallization

RESEARCH On THE EVAlUATIOn METHOD Of fRICTIOn AnD lUBRICATIOn In DEEP DRAWInG

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2期13卷 439-445页

作者： D.n.He X.f.yin H.Z.Thao D.lv X.y.Ruan J.l.Cheng J.y.Jiang Shanghai Jiao Tong University National Die&Mold CAD E.R.CShanghai 200030China Shanghai Vopkswagen Automotive Company ltd. Shanghai 201805China

The deformation characteristic of bland in deep drawing is discussed. It is pointed out that the friction and lubrication conditions in for drawing are different from that in mechanical motion or machine work or other plastic process. The common test methods in laboratories are analyzed. It shows that though all those test methods can test the friction coefficient, the probe test method is most suitable for the research of friction and lubrication and the process in deep drawing, for this method is identical with the actual work condition either from the test principle or deformation status of the blank. last the successful application in the deep drawing simulator newly developed the the probe method are intro- duced in detail.

关键词： deep drawing probe test method friction and lubrication evaluation method

Simultaneous nitrification and autotrophic denitrification in fluidized bed reactors using pyrite and elemental sulfur as electron donors

在线全文

学校读者我要写书评

暂无评论

Water Science and Engineering 2023年第2期16卷 143-153页

作者： Maria f.Carboni Sonia Arriaga Piet n.l.lens national University of Ireland Galway H91 TK33 GalwayIreland Instituto Potosino de Investigación Científica y Tecnológica 78216 San Luis PotosíMexico

In this study, simultaneous nitrification and autotrophic denitrification (SnAD) with either elemental sulfur or pyrite were investigated in fluidized bed reactors in mesophilic conditions. The reactor performance was evaluated at different ammonium (12-40 mg/l of nH4+-n), nitrate (35-45 mg/l of nO3--n), and dissolved oxygen (DO) (0.1-1.5 mg/l) concentrations, with a hydraulic retention time of 12 h. The pyrite reactor supported the SnAD process with a maximum nitrogen removal efficiency of 139.5 mg/(l·d) when the DO concentration was in the range of 0.8-1.5 mg/l. This range, however, limited the denitrification efficiency of the reactor, which decreased from 90.0% ± 5.3% in phases II-V to 67.9% ± 7.2% in phases VI and VII. Sulfate precipitated as iron sulfate (feSO4/fe2(SO4)3) and sodium sulfate (na2SO4) minerals during the experiment. The sulfur reactor did not respond well to nitrification with a low and unstable ammonium removal efficiency, while denitrification occurred with a nitrate removal efficiency of 97.8%. In the pyrite system, the nitrifying bacterium nitrosomonas sp. was present, and its relative abundance increased from 0.1% to 1.1%, while the autotrophic denitrifying genera Terrimonas, ferruginibacter, and Denitratimonas dominated the community. Thiobacillus, Sulfurovum, and Trichlorobacter were the most abundant genera in the sulfur reactor during the entire experiment.

关键词： Pyrite Elemental sulfur Simultaneous nitrification and denitrification nitrogen removal 16S rRnA

Opportunities and challenges of biodegradable Zn-based alloys

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2020年第11期42卷 136-138页

作者： H.f.li Z.Z.Shi l.n.Wang Beijing Advanced Innovation Center for Materials Genome Engineering School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083China

following the footsteps of biodegradable Mg-based and fe-based alloys,biodegradable Zn-based alloy is a newcomer and rising star in the family of biodegradable metals and *** combined superior mechanical properties,appropriate degradation rates,excellent biocompatibility of biodegradable Zn-based alloys have brought worldwide research interest on the design,development and clinical translation of Zn-based *** present perspective has summarized opportunities and challenges in the development of biodegradable Zn-based alloys.

关键词： Biodegradable Zn-based alloys Clinical applications Mechanical properties Degradation behavior Biocompatibility Corrosion fatigue Bio-tribocorrosion

li(2p←2s)+na(3s)pressure broadening in the far-wing and line-core profiles

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2022年第7期31卷 247-254页

作者： f Talbi n lamoudi l Reggami M T Bouazza K Alioua M Bouledroua Physics Department Badji Mokhtar UniversityB.P.12Annaba 23000Algeria laboratoire de Physique des Rayonnements Badji Mokhtar UniversityB.P.12Annaba 23000Algeria laboratoire d’Etude des Surfaces et Interfaces de la Matiere Solide(lESIMS) Badji Mokhtar UniversityB.P.12 Annaba 23000Algeria laboratoire lAMA Laboratoire des Materiaux Avances(LAMA)Badji Mokhtar UniversityB.P.12 Annaba 23000Algeria laboratoire de Physique de la Matiere et du Rayonnement lPMR Universite Cherif MessaidiaB.P.1553Souk-Ahras 41000Algeria

This work reports pressure-broadening line-wing and line-core of the lithium li(2p←2s)resonance line perturbed by ground sodium na(3s)*** far-wing regions,the calculations are performed quantum-mechanically and are intended to examine the photoabsorption coefficients at diverse *** results show the existence of three satellites,in the blue wing near the wavelengths 470 nm and in the red wing around 862 nm and 1070 *** the line-core region,by adopting the simplified Baranger model,the line-width and line-shift rates are determined,and their variation law with temperature is *** published data were found to compare these results with.

关键词： pressure broadening line-core broadening far-wing spectra photoabsorption

Exact solutions for magnetohydrodynamic nanofluids flow and heat transfer over a permeable axisymmetric radially stretching/shrinking sheet

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第2期33卷 108-114页

作者： U.S.Mahabaleshwar G.P.Vanitha l.M.Pérez Emad H.Aly I.Pop Department of Studies in Mathematics Davangere UniversityShivagangothriDavangereIndia Departamento de f´ısica FACIUniversidad de Tarapac´aCasilla 7DAricaChile Department of Mathematics Faculty of EducationAin Shams UniversityRoxyCairoEgypt Department of Mathematics Babes-Bolyai University400084 Cluj-NapocaRomania

We report on the magnetohydrodynamic impact on the axisymmetric flow of Al_(2)O_(3)/Cu nanoparticles suspended in H_(2)O past a stretched/shrinked *** the use of partial differential equations and the corresponding thermophysical characteristics of nanoparticles,the physical flow process is *** resultant nonlinear system of partial differential equations is converted into a system of ordinary differential equations using the suitable similarity *** transformed differential equations are solved *** of the magnetic parameter,solid volume fraction and stretching/shrinking parameter on momentum and temperature distribution have been analyzed and interpreted *** skin friction and nusselt number were also *** addition,existence of dual solution was deduced for the shrinking sheet and unique solution for the stretching ***,Al_(2)O_(3)/H_(2)O nanofluid flow has better thermal conductivity on comparing with Cu/H_(2)O ***,it was found that the first solutions of the stream are stable and physically realizable,whereas those of the second ones are unstable.

关键词： magnetohydrodynamic nanofluid stretching/shrinking sheet axisymmetric flow analytical solution suction/injection