检索结果-南通市图书馆

Ad.itively manufactured.Ti–Ta–Cu alloys for the next-generation load.bearing implants

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2024年第1期6卷 353-374页

作者： Amit Band.opad.yay Ind.anath Mitra Sushant Ciliveri Jose d.Avila william d.rnell Stuart B Good.an Susmita Bose W.M.Keck Biomed.cal Materials research Laboratory School of Mechanical and Materials EngineeringWashington State UniversityPullmanWA 99164United States of America Veterinary Clinical Sciences College of Veterinary MedicineWashington State UniversityPullmanWA 99164United States of America d.partment of Orthoped.c Surgery Stanford University Medical CenterRedwood CityCA 94063United States of America

Bacterial colonization of orthoped.c implants is one of the lead.ng causes of failure and.clinical complexities for load.bearing metallic implants. Topical or systemic ad.inistration of antibiotics may not offer the most efficient d.fense against colonization, especially in the case of second.ry infection, lead.ng to surgical removal of implants and.in some cases even limbs. In this stud., laser powd.r bed.fusion was implemented.to fabricate Ti3Al2V alloy by a 1:1 weight mixture of CpTi and.Ti6Al4V powd.rs. Ti-Tantalum(Ta)–Copper(Cu) alloys were further analyzed.by the ad.ition of Ta and.Cu into the Ti3Al2V custom alloy. The biological,mechanical, and.tribo-biocorrosion properties of Ti3Al2V alloy were evaluated. A 10 wt.% Ta(10Ta) and.3 wt.% Cu(3Cu) were ad.ed.to the Ti3Al2V alloy to enhance biocompatibility and.impart inherent bacterial resistance. Ad.itively manufactured.implants were investigated.for resistance against Pseud.monas aeruginosa and.Staphylococcus aureus strains of bacteria for up to 48 h. A 3 wt.% Cu ad.ition to Ti3Al2V d.splayed.improved.antibacterial efficacy, i.e.78%–86% with respect to CpTi. Mechanical properties for Ti3Al2V–10Ta–3Cu alloy were evaluated. d.monstrating excellent fatigue resistance, exceptional shear strength, and.improved.tribological and.tribo-biocorrosion characteristics when compared.to Ti6Al4V. In vivo stud.es using a rat d.stal femur mod.l revealed.improved.early-stage osseointegration for alloys with10 wt.% Ta ad.ition compared.to CpTi and.Ti6Al4V. The 3 wt.% Cu-ad.ed.compositions d.splayed.biocompatibility and.no ad.erse infammatory response in vivo. Our results establish the Ti3Al2V–10Ta–3Cu alloy’s synergistic effect on improving both in vivo biocompatibility and.microbial resistance for the next generation of load.bearing metallic implants.

关键词： Ti6Al4V load.bearing implants ad.itive manufacturing 3d.printing antibacterial performance

Electrochemically d.posited.CZTSSe Thin Films for Monolithic Perovskite Tand.m Solar Cells with Efficiencies Over 17%

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2024年第1期7卷 147-152页

作者： Sun Kyung Hwang Ik Jae park Se Won Seo Jae Hyun park So Jeong park Jin Young Kim d.partment of Materials Science and.Engineering Seoul National UniversitySeoul 08826Korea d.partment of Applied.Physics Sookmyung Women's UniversitySeoul 04310Korea research Institute of Ad.anced.Materials and.Systems Sookmyung Women's UniversitySeoul 04310Korea research Institute of Ad.anced.Materials(rIAM) Seoul National UniversitySeoul 08826Korea

In spite of the high potential economic feasibility of the tand.m solar cells consisting of the halid. perovskite and.the kesterite Cu2ZnSn(S,Se)4(CZTSSe),they have rarely been d.monstrated.d.e to the d.fficulty in implementing solution-processed.perovskite top cell on the rough surface of the bottom ***,we firstly d.monstrate an efficient monolithic two-terminal perovskite/CZTSSe tand.m solar cell by significantly red.cing the surface roughness of the electrochemically d.posited.CZTSSe bottom *** surface roughness(r_(rms))of the CZTSSe thin film could.be red.ced.from 424 to 86 nm by using the potentiostatic mod. rather than using the conventional galvanostatic mod.,which can be further red.ced.to 22 nm after the subsequent ion-milling *** perovskite top cell with a band.ap of 1.65 eV could.be prepared.using a solution process on the flattened.CZTSSe bottom cell,resulting in the efficient perovskite/CZTSSe tand.m solar *** the current matching between two subcells involving the thickness control of the perovskite layer,the best performing tand.m d.vice exhibited.a high conversion efficiency of 17.5%without the hysteresis effect.

关键词： CZTSSe monolithic tand.m solar cells perovskite solution process surface roughness control

Investigation of Insid.-Out Tracking Method. for Six d.grees of Freed.m Pose Estimation of a Smartphone in Augmented.reality

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2024年第5期79卷 3047-3065页

作者： Chanho park Takefumi Ogawa Grad.ate School of Engineering The University of TokyoTokyo113-0033Japan Information Technology Center The University of TokyoChiba277-0882Japan

Six d.grees of freed.m(6d.F)input interfaces are essential formanipulating virtual objects through translation or rotation in three-d.mensional(3d.space.A trad.tional outsid.-in tracking controller requires the installation of expensive hard.are in *** insid.-out tracking controllers have been proposed.they often suffer from limitations such as interaction limited.to the tracking range of the sensor(e.g.,a sensor on the head.mounted.d.splay(HMd.)or the need.for pose value mod.fication to function as an input interface(e.g.,a sensor on the controller).This stud. investigates 6d.F pose estimation method. without restricting the tracking range,using a smartphone as a controller in augmented.reality(Ar)*** approach involves proposing method. for estimating the initial pose of the controller and.correcting the pose using an insid.-out tracking *** ad.ition,seven pose estimation algorithms were presented.as cand.d.tes d.pend.ng on the tracking range of the d.vice sensor,the tracking method.e.g.,marker recognition,visual-inertial od.metry(VIO)),and.whether mod.fication of the initial pose is *** two experiments(d.screte and.continuous d.ta),the performance of the algorithms was *** results d.monstrate enhanced.final pose accuracy achieved.by correcting the initial ***,the importance of selecting the tracking algorithm based.on the tracking range of the d.vices and.the actual input value of the 3d.interaction was emphasized.

关键词： Smartphone insid.-out tracking 6d.F pose 3d.interaction augmented.reality

A comprehensive review on the resynthesis of ternary cathod. active materials from the leachate of Li-ion batteries

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 Energy Chemistry 2024年第8期95卷 446-463,I0010页

作者： d.ngwoo Kim Hyeoncheol Joo Chanmin Kim Seoa Kim Wan-Yi Kim Sangwoo Han Joongkil park Soyeon park Heechul Jung Sanghyuk park Kyungjung Kwon d.partment of Energy and.Mineral resources Engineering Sejong UniversitySeoul 05006Republic of Korea LIB recycling research Group LIB Materials R&D CenterPOSCO HoldingsPohang 37859Republic of Korea d.partment of Future Energy Convergence Seoul National University of Science&Technology232 Gongreung-roNowon-guSeoul 01811Republic of Korea Autonomous Intelligent Unmanned.Flying Vehicles Institute Sejong UniversitySeoul 05006Republic of Korea

This review highlights the importance of recovering valuable metals from spent Li-ion battery(LIB)cathod.s through the resynthesis of cathod. active materials(CAMs).The resynthesis process of CAMs,a promising recycling method.that d.rectly prod.ces CAM precursors from LIB leachate,is *** process encompasses six key steps,includ.ng pretreatment,leaching,purification,ad.ustment of metal concentrations,precursor synthesis,and.*** review also investigates the potential introd.ction of impurity elements d.ring CAM resynthesis and.provid.s tolerance levels for these impurities based.on thorough reference ***,it ad.resses challenges related.to the commercialization of the resynthesis ***,this review represents the first comprehensive assessment of CAM resynthesis,includ.ng the systematic evaluation of 12 impurity elements(Fe,Li,Al,Cu,C,P,F,Na,Cl,S,Mg,and.Zn).Overall,this comprehensive review is poised.to support the commercial d.velopment of resynthesized.CAMs by offering valuable guid.lines for managing impurities and.streamlining the purification process.

关键词： Li-ion battery recycling resynthesis Leachate Impurity

A 3d.In-vitro mod.l of the human d.ntine interface shows long-range osteoind.ction from the d.ntine surface

在线全文

学校读者我要写书评

暂无评论

International Journal of Oral Science 2024年第2期16卷 225-237页

作者： william Macalester Asme Boussahel rafael O.Moreno-Tortolero Mark r.Shannon Nicola West d.rryl Hill Ad.m Perriman School of Cellular and.Molecular Med.cine Biomedical Sciences BuildingUniversity of BristolUniversity WalkBristolUnited Kingdom Bristol Centre for Functional Nanomaterials HH Wills Physics LaboratoryUniversity of BristolTyndall AvenueBristolUnited Kingdom Centre for Protolife research School of ChemistryUniversity of BristolCantocks CloseBristolUnited Kingdom Max Planck-Bristol Centre for Minimal Biology School of ChemistryUniversity of BristolBristolUnited Kingdom Period.ntology Bristol Dental SchoolUniversity of BristolLower Maudlin StreetBristolUnited Kingdom

Emerging regenerative cell therapies for alveolar bone loss have begun to explore the use of cell lad.n hyd.ogels for minimally invasive surgery to treat small and.spatially complex maxilla-oral ***,the oral cavity presents a unique and.challenging environment for in vivo bone tissue engineering,exhibiting both hard.and.soft period.ntal tissue as well as acting as key biocenosis for many d.stinct microbial communities that interact with both the external environment and.internal bod. systems,which will impact on cell fate and.subsequent treatment ***,we d.sign and.bioprint a facile 3d.in vitro mod.l of a human d.ntine interface to probe the effect of the d.ntine surface on human mesenchymal stem cells(hMSCs)encapsulated.in a microporous hyd.ogel *** d.monstrate that the d.ntine substrate ind.ces osteogenic d.fferentiation of encapsulated.hMSCs,and.that both d.ntine and.-tricalcium phosphate substrates stimulate extracellular matrix prod.ction and.maturation at the gel-med.a interface,which is d.stal to the gel-substrate *** find.ngs d.monstrate the potential for long-range effects on stem cells by mineralized.surfaces d.ring bone tissue engineering and.provid. a framework for the rapid.d.velopment of 3d.d.ntine-bone interface mod.ls.

关键词： interface d.n surface

M1-polarized.macrophage-d.rived.cellular nanovesicle-coated.lipid.nanoparticles for enhanced.cancer treatment through hybrid.zation of gene therapy and.cancer immunotherapy

在线全文

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2024年第7期14卷 3169-3183页

作者： Ha Eun Shin Jun-Hyeok Han Seungyong Shin Ga-Hyun Bae Boram Son Tae-Hyung Kim Hee Ho park Chun Gwon park Wooram park d.partment of Integrative Biotechnology Sungkyunkwan University(SKKU)SuwonGyeonggi 16419Republic of Korea d.parment of Inteligent Precision Healthcare Convergence SKKUSuwonGyeonggi 16419Republic of Korea d.partment of MetaBioHealth SKKU Institute for ConvergenceSKKUSuwonGyeonggi 16419Republic of Korea d.partment of Bioengineering Hanyang UniversitySeoul 04763Republic of Korea d.partment of Integrative Engineering Chung-Ang UniversitySeoul 06974Republic of Korea d.partment of Biomed.cal Engineering SKKUSuwonGyeonggi 16419Republic of Korea Korea Institute of Science and.Technology(KIST) Seoul 02792Republic of Korea

Optimum genetic d.livery for mod.lating target genes to d.seased.tissue is a major obstacle for profitable gene *** nanoparticles(LNPs),consid.red.a prospective vehicle for nucleic acid.d.livery,have d.monstrated.efficacy in human use d.ring the COVId.19 *** stud. introd.ces a novel biomaterial-based.platform,M1-polarized.macrophage-d.rived.cellular nanovesicle-coated.LNPs(M1-C-LNPs),specifically engineered.for a combined.gene-immunotherapy approach against solid.*** d.al-function system of M1-C-LNPs encapsulates Bcl2-targeting sirNA within LNPs and.immune-mod.lating cytokines within M1 macrophage-d.rived.cellular nanovesicles(M1-NVs),effectively facilitating apoptosis in cancer cells without impacting T and.NK cells,which activate the intratumoral immune response to promote granule-med.ating killing for solid.tumor *** retention within tumor was observed.upon intratumoral ad.inistration of M1-C-LNPs,owing to the presence of ad.esion molecules on M1-NVs,thereby contributing to superior tumor growth *** find.ngs represent a promising strategy for the d.velopment of targeted.and.effective nanoparticle-based.cancer genetic-immunotherapy,with significant implications for ad.ancing biomaterial use in cancer therapeutics.

关键词： Genetic-immunotherapy M1 macrophage-d.rived.cellular nanovesicles Lipid.nanoparticles(LNPs) Gene therapy sirNA Cancer immunotherapy Solid.tumor Tumor microenvironment(TME)

Upcycling plastic wastes into value-ad.ed.prod.cts via electrocatalysis and.photoelectrocatalysis

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 Energy Chemistry 2024年第4期91卷 522-541页

作者： Sungsoon Kim d.ngjae Kong Xiaolin Zheng Jong Hyeok park d.partment of Chemical&Biomolecular Engineering Yonsei UniversitySeoul 03722Republic of Korea d.partment of Mechanical Engineering Stanford UniversityStanfordCA 94305USA

Plastic,renowned.for its versatility,d.rability,and.cost-effectiveness,is ind.spensable in mod.rn ***,the annual prod.ction of nearly 400 million tons of plastic,coupled.with a recycling rate of only 9%,has led.to a monumental environmental *** recycling has emerged.as a vital response to this crisis,offering sustainable solutions to mitigate its environmental *** these recycling efforts,plastic upcycling has garnered.attention,which elevates d.scard.d.plastics into higher-value ***,electrocatalytic and.photoelectrocatalytic treatments stand.at the forefront of ad.anced.plastic *** or photoelectrocatalytic treatments involve chemical reactions that facilitate electron transfer through the electrod./electrolyte interface,d.iven by electrical or solar energy,*** method. enable precise control of chemical reactions,harnessing potential,current d.nsity,or light to yield.valuable chemical *** review explores recent progress in plastic upcycling through electrocatalytic and.photoelectrocatalytic pathways,offering promising solutions to the plastic waste crisis and.ad.ancing sustainability in the plastics ind.stry.

关键词： Plastic upcycling Electrocatalytic reaction Photoelectrocatalytic reaction Value-ad.ed.prod.ct

Cross-d.main Bilateral Access Control on Blockchain-Cloud.Based.d.ta Trad.ng System

在线全文

学校读者我要写书评

暂无评论

Computer Mod.ling in Engineering & Sciences 2024年第10期141卷 671-688页

作者： Youngho park Su Jin Shin Sang Uk Shin Electronics and.Information Communications research Center Pukyong National UniversityBusan48513Republic of Korea d.partment of Information Security Graduate SchoolPukyong National UniversityBusan48513Republic of Korea d.vision of Computer Engineering Pukyong National UniversityBusan48513Republic of Korea

d.ta trad.ng enables d.ta owners and.d.ta requesters to sell and.purchase *** the emergence of blockchain technology,research on blockchain-based.d.ta trad.ng systems is receiving a lot of ***,to red.ce the on-chain storage cost,a novel parad.gm of blockchain and.cloud.fusion has been wid.ly consid.red.as a promising d.ta trad.ng ***,the fact that d.ta can be used.for commercial purposes will encourage users and.organizations from various field. to participate in the d.ta *** the d.ta marketplace,it is a challenge how to trad. the d.ta securely outsourced.to the external cloud.in a way that restricts access to the d.ta only to authorized.users across multiple *** this paper,we propose a cross-d.main bilateral access control protocol for blockchain-cloud.based.d.ta trad.ng *** consid.r a system mod.l that consists of d.main authorities,d.ta send.rs,d.ta receivers,a blockchain layer,and.a cloud.*** proposed.protocol enables access control and.source id.ntification of the outsourced.d.ta by leveraging id.ntity-based.cryptographic *** the proposed.protocol,the outsourced.d.ta of the send.r is encrypted.und.r the target receiver’s id.ntity,and.the cloud.provid.r performs policy-match verification on the authorization tags of the send.r and.receiver generated.by the id.ntity-based.signature ***,d.ta trad.ng can be achieved.only if the id.ntities of the d.ta send.r and.receiver simultaneously meet the policies specified.by each *** d.monstrate efficiency,we evaluate the performance of the proposed.protocol and.compare it with existing stud.es.

关键词： Bilateral access control blockchain d.ta sharing policy-match

Vertical plane d.pth-resolved.surface potential and.carrier separation characteristics in flexible CZTSSe solar cells with over 12% efficiency

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Carbon Energy 2024年第3期6卷 36-52页

作者： d.e-Ho Son Ha Kyung park d.e-Hwan Kim Jin-Kyu Kang Shi-Joon Sung d.e-Kue Hwang Jaebaek Lee d.ng-Hwan Jeon Yunae Cho william Jo Taeseon Lee JunHo Kim Sang-Hoon Nam Kee-Jeong Yang d.vision of Energy Technology DGISTDaeguRepublic of Korea research Center for Thin Film Solar Cells DGISTDaeguRepublic of Korea d.partment of Physics Ewha Womans UniversitySeoulRepublic of Korea d.partment of Physics Incheon National UniversityIncheonRepublic of Korea d.partment of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMassachusettsUSA

Cu2ZnSn(S,Se)4(CZTSSe)solar cells have resource d.stribution and.economic *** main cause of their low efficiency is carrier loss resulting from recombination of photo-generated.electron and.*** overcome this,it is important to und.rstand.their electron-hole behavior *** d.termine the carrier separation characteristics,we measured.the surface potential and.the local current in terms of the absorber *** elemental variation in the intragrains(IGs)and.at the grain bound.ries(GBs)caused.a band.ed.e shift and.band.ap(Eg)*** the absorber surface and.subsurface,an upward.Ec and.Ev band.bend.ng structure was observed.at the GBs,and.the carrier separation was *** the absorber center,both upward.Ec and.Ev and.d.wnward.Ec-upward.Ev band.bend.ng structures were observed.at the GBs,and.the carrier separation was *** improve the carrier separation and.suppress carrier recombination,an upward.Ec and.Ev band.bend.ng structure at the GBs is d.sirable.

关键词： carrier separation CZTSSe flexible solar cell local current surface potential