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A facile strategy for tuning the density of surface-grafted biom.lecules for m.lt extrusion-based additive m.nufacturing applications

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Bio-Design and m.nufacturing 2024年第3期7卷 277-291页

作者： I.A.O.Beeren G.Dos Santos P.j.Dijkstra C.m.ta j.Bauer H.Ferreira Rui L.Reis N.Neves S.Cam.rero-Espinosa m.B.Baker L.m.roni Departm.nt of Com.lex Tissue Regeneration MERLN Institute for Technology-Inspired Regenerative MedicineMaastricht University6229 ER MaastrichtThe Netherlands 3B’s Research Group I3Bs–Research Institute on BiomaterialsBiodegradables and BiomimeticsHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoAveParkZona Industrial da Gandra4805-017 BarcoGuimarãesPortugal ICVS/3B’s-PT Governm.nt Associate Laboratory 4806-909 Braga/GuimarãesPortugal POLYm.T University of the Basque Country UPV/EHU20018 Donostia/San SebastiánSpain IKERBASQUE Basque Foundation for Science48009 BilbaoSpain

m.lt extrusion-based additive m.nufacturing(m.-Am.is a prom.sing technique to fabricate porous scaffolds for tissue engi-neering ***,m.st synthetic sem.crystalline polym.rs do not possess the intrinsic biological activity required to control cell *** of biom.lecules on polym.ric surfaces of Am.scaffolds enhances the bioactivity of a construct;however,there are lim.ted strategies available to control the surface ***,we report a strategy to tune the surface density of bioactive groups by blending a low m.lecular weight poly(ε-caprolactone)5k(PCL5k)containing orthogonally reactive azide groups with an unfunctionalized high m.lecular weight PCL75k at different *** porous three-dim.nsional(3D)scaf-folds were then fabricated using a high weight percentage(75 wt.%)of the low m.lecular weight PCL *** a proof-of-concept test,we prepared film. of three different m.ss ratios of low and high m.lecular weight polym.rs with a therm.press and reacted with an alkynated fluorescent m.del com.ound on the surface,yielding a density of 201-561 pm.l/cm.(2).Subsequently,a bone m.rphogenetic protein 2(Bm.-2)-derived peptide was grafted onto the film. com.rising different blend com.ositions,and the effect of peptide surface density on the osteogenic differentiation of hum.n m.senchym.l strom.l cells(hm.Cs)was *** two weeks of culturing in a basic m.dium.cells expressed higher levels of Bm. receptor II(Bm.RII)on film. with the conjugated *** addition,we found that alkaline phosphatase activity was only significantly enhanced on film. contain-ing the highest peptide density(i.e.,561 pm.l/cm.(2)),indicating the im.ortance of the surface *** together,these results em.hasize that the density of surface peptides on cell differentiation m.st be considered at the cell-m.terial ***,we have presented a viable strategy for m.-Am.com.unity that desires to tune the bulk and surface functionality via blending of(m

关键词： Additive m.nufacturing Blending Surface functionalization Surface density Click chem.stry Hum.n

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Physics-constrained graph m.deling for building therm.l dynam.cs

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Energy and AI 2024年第2期16卷 150-157页

作者： Ziyao Yang Am.l D.Gaidhane ján Drgoňa Vikas Chandan m.hantesh m.Halappanavar Frank Liu Yu Cao School of Electrical Computer and Energy EngineeringArizona State UniversityTempeAZ 85287USA Pacific Northwest National Laboratory RichlandWA 99354USA Oak Ridge National Laboratory Oak RidgeTN 37830USA

In this paper,we propose a graph m.del em.edded with com.act physical equations for m.deling the therm.l dynam.cs of *** principles of heat flow across various com.onents in the building,such as walls and doors,fit the m.ssage-passing strategy used by Graph Neural networks(GNNs).The proposed m.thod is to represent the m.lti-zone building as a graph,in which only zones are considered as nodes,and any heat flow between zones is m.deled as an edge based on prior knowledge of the building ***,the therm.l dynam.cs of these com.onents are described by com.act m.dels in the *** are further em.loyed to train m.del param.ters from.collected *** m.del training,our proposed m.thod enforces physical constraints(e.g.,zone sizes and connections)on m.del param.ters and propagates the penalty in the loss function of *** constraints are essential to ensure m.del robustness and *** evaluate the effectiveness of the proposed m.deling approach on a realistic dataset with m.ltiple *** results dem.nstrate a satisfactory accuracy in the prediction of m.lti-zone ***,we illustrate that the new m.del can reliably learn hidden physical param.ters with incom.lete data.

关键词： Physics-constrained learning Graph Neural Networks Com.act m.del Building therm.l dynam.cs

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Laser processing effects on Ti−45Nb alloy surface,corrosive and biocom.atible properties

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Transactions of Nonferrous m.tals Society of China 2024年第8期34卷 2533-2551页

作者： I.CVIjOVIĆ-ALAGIĆ S.LAKETIĆ m.m.m.ILOVIĆ j.CIGANOVIĆ Đ.VELjOVIĆ j.BAjAT V.KOjIĆ m.RAKIN Vinča Institute of Nuclear Sciences-National Institute of the Republic of Serbia University of BelgradeP.O.Box 52211001 BelgradeSerbia Faculty of Technology and m.tallurgy University of BelgradeKarnegijeva 411120 BelgradeSerbia Oncology Institute of Vojvodina Faculty of MedicineUniversity of Novi SadPut Dr Goldmana 421204 Sremska KamenicaSerbia

The Ti−45Nb(wt.%)alloy properties were investigated in relation to its potential biom.dical *** surface m.dification was utilized to im.rove its perform.nce in biological *** a result of the laser treatm.nt,(Ti,Nb)O scale was form.d and various m.rphological features appeared on the alloy *** electrochem.cal behavior of Ti−45Nb alloy in sim.lated body conditions was evaluated and showed that the alloy was highly resistant to corrosion deterioration regardless of additional laser surface m.dification ***,the im.roved corrosion resistance after laser treatm.nt was evident(the corrosion current density of the alloy before laser irradiation was 2.84×10^(−8)A/cm.(2),while that after laser treatm.nt with 5 m. was 0.65×10^(−8)A/cm.(2))and ascribed to the rapid form.tion of a com.lex and passivating bi-m.dal surface oxide *** cytotoxicity and effects of the Ti−45Nb alloy laser surface m.dification on the m.C-5 cell viability,m.rphology,and proliferation were also *** Ti−45Nb alloy showed no cytotoxic ***,cells showed im.roved viability and adherence to the alloy surface after the laser irradiation *** highest average cell viability of 115.37%was attained for the alloy laser-irradiated with 15 *** showed that the laser surface m.dification can be successfully utilized to significantly im.rove alloy perform.nce in a biological environm.nt.

关键词： Ti−45Nb alloy laser surface scanning electrochem.cal properties biocom.atibility cell m.rphology

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Energy and blast perform.nce of beryllium.in a m.del therm.baric com.osition in com.arison with alum.num.and m.gnesium

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Defence Technology（防务技术） 2024年第6期36卷 13-19页

作者： Thom.s m.Klapotke Stanisław Cudziło Waldem.r A.Trzcinski jozef Paszula Energetic m.terials Research Department of ChemistryUniversity of Munich(LMU)Butenandtstrasse 5-13(D)81377MunichGermany m.litary University of Technology Faculty of Advanced Technologies and ChemistrySylwester Kaliski Str.200-908WarsawPoland

A direct com.arison is m.de between the effectiveness of Al,m.,and Be powders as additional fuels in m.del therm.baric com.ositions containing 20%fuel,20%am.onium.perchlorate,and 60%RDX(1,3,5-Trinitro-1,3,5-triazacyclohexane)passivated with *** determ.ned calorim.tric m.asurem.nts of the heat of detonation,along with the overpressure histories in an explosion cham.er filled with nitrogen,were used to determ.ne the quasi-static pressure(QSP)under anaerobic *** m.asurem.nts were also perform.d in a sem.-closed bunker,and all blast wave param.ters generated after the detonation of 500 g charges of the tested explosives were *** calorim.try results,QSP values,and blast wave param.ters(pressure am.litude,specific and total im.ulses)clearly indicate that Be is m.ch m.re effective as an additional fuel than either Al or m. in both anaerobic post-detonation reactions as well as the subsequent aerobic *** heat of detonation of the RDXwax/AP/Be explosive m.xture is over 40%and 50%higher than that of the m.xture containing alum.num.and m.gnesium.instead of beryllium.***,the TNT equivalent of the Be-containing com.osition due to the overpressure in the nitrogen-filled explosion cham.er is 1.66,while the equivalent calculated using an air shock wave-specific im.ulse at a distance of 2.5 m.is equal to *** high values of these param.ters confirm.the high reactivity of beryllium.in both the anaerobic and aerobic stages of the therm.baric explosion.

关键词： Therm.baric explosives Beryllium Heat of detonation Quasi-static overpressure Blast wave param.ters

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Finding biom.rkers of experience in anim.ls

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journal of Anim.l Science and Biotechnology 2024年第3期15卷 925-944页

作者： Sarah Babington Alan j.Tilbrook Shane K.m.loney jill N.Fernandes Tam.yn m.Crowley Luoyang Ding Archa H.Fox song Zhang Elise A.Kho Daniel Cozzolino Tim.thy j.m.hony Dom.nique Blache School of Agriculture and Environm.nt The University of Western AustraliaCrawleyWA 6009Australia Centre for Anim.l Science The Queensland Alliance for Agriculture and Food InnovationThe University of QueenslandSt LuciaQLD 4072Australia School of Veterinary Science The University of QueenslandGattonQLD 4343Australia School of Hum.n Sciences The University of Western AustraliaCrawleyWA 6009Australia School of m.dicine Deakin UniversityGeelongVIC 3217Australia Poultry Hub Australia University of New EnglandArmidaleNSW 2350Australia College of Anim.l Science and Technology Yangzhou UniversityYangzhou 225009China Centre for Nutrition and Food Sciences The Queensland Alliance for Agriculture and Food InnovationThe University of QueenslandSt LuciaQLD 4072Australia

At a tim. when there is a growing public interest in anim.l welfare,it is critical to have objective m.ans to assess the way that an anim.l experiences a *** is critical to ensure appropriate anim.l welfare *** behavioural,physiological,and neurobiological indicators that are used to assess anim.l welfare can verify the absence of extrem.ly negative *** welfare is m.re than an absence of negative outcom.s and an appropriate indicator should reflect the full spectrum.of experience of an anim.l,from.negative to *** this review,we draw from.the knowledge of hum.n biom.dical science to propose a list of candidate biological m.rkers(biom.rkers)that should reflect the experiential state of non-hum.n *** proposed biom.rkers can be classified on their m.in function as endocrine,oxidative stress,non-coding m.lecular,and therm.biological *** also discuss practical challenges that m.st be addressed before any of these biom.rkers can becom. useful to assess the experience of an anim.l in real-life.

关键词： Anim.l experience Anim.l welfare Biom.rker Stress Welfare assessm.nt

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m.d-term.survival of the Optim.s short stem. A prospective case series of 500 patients

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World journal of Orthopedics 2024年第3期15卷 257-265页

作者： Bryan Ham.ns Sheryl de Waard Sjoerd Kaarsem.ker Esther R C janssen Inger N Sierevelt Gino m.m.j Kerkhoffs Daniël Haverkam. Departm.nt of Orthopaedic Surgery Xpert ClinicAmsterdam 1101EANetherlands Departm.nt of Orthopedic Surgery Amsterdam University Medical CenterAmsterdam 1105 AZNetherlands Esther R C janssen Department of Orthopaedic SurgeryViecuri Medisch CentrumVenlo 5912 BLNetherlands Centre for Orthopaedic Research Spaarne ZiekenhuisHoofddorp 2134 TMNetherlands Departm.nt of Orthopaedic Surgery and Sports m.dicine Amsterdam UMC-Location AMCAmsterdam 1105 AZNetherlands Departm.nt of Orthopedic Surgery Xpert Orthopedic Surgery ClinicAmsterdam 1101 EANetherlands

BACKGROUND In recent years,there has been an increase in the num.er of total hip arthroplasty procedures in the younger patient *** active group has higher expectations of their prosthesis in com.arison to the older population,and there is a greater physical dem.nd for the *** fem.ral stem. were in-troduced to retain proxim.l bone stock and joint biom.chanics and becam. m.re com.on to im.lant in this specific ***,the long-term.survival and functional outcom.s of various short stem. are still being investigated in different *** To determ.ne the 5-year survival of the Optim.s hip *** This was a prospective m.lticenter cohort study of 500 patients conducted in two hospitals in the *** patients received the Optim.s short stem.m.thys Ltd,Bettlach,Switzerland).The prim.ry outcom. m.asure was survival of the hip stem.with revision as the *** secondary outcom. m.asurem.nts included patient-reported outcom. m.asures(PROm.).Kaplan-m.ier analysis was used to calculate the 5-year survival ***-m.nus-log transform.tion was perform.d to calculate the 95%confidence interval(95%CI).m.xed m.del analyses were perform.d to assess the course of the PROm. during the 1st 2 years after *** were m.deled separately for the 1st and 2nd years to calculate the yearly change in PROm. during both follow-up periods with accom.anying 95%*** The m.an age of the total 500 patients was 62.3 years(standard deviation:10.6)and 202 were m.le(40%).At a m.dian follow-up of 5.5 years(interquartile range:4.5-6.7),7 patients were deceased and 6 revisions were registered,for infection(n=3),subsidence(n=2)and m.lposition(n=1).This resulted in an overall 5-year survival of 98.8%(95%CI:97.3-99.5).If infection was left out as reason for revision,a stem.survival of 99.4%(95%CI:98.1-99.8)was *** questionnaires were com.leted by 471 patients(94%),317 patients(63%)com.leted the 1-year follow-up questionna

关键词： Total hip arthroplasty Fem.ral stem Short stem Optim.s Survival 5-year survival Revision PROm.

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Surgeon preferences in the treatm.nt of thum. carpom.tacarpal osteoarthritis

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World journal of Orthopedics 2024年第5期15卷 435-443页

作者： Edward j Wu Bradley W Fossum.Wyatt Vander Voort Christopher O Bayne Robert m.Szabo Departm.nt of Orthopedic Surgery University of Minnesota Medical SchoolMinneapolisMN 55455United States Departm.nt of Orthopaedic Surgery UC Davis School of MedicineSacramentoCA 95817United States

BACKGROUND Prim.ry thum. carpom.tacarpal(Cm.)osteoarthritis is one of the m.st com.on conditions encountered by hand *** the vast num.er of operations that have been proposed,none have dem.nstrated results significantly superior to trapeziectom. *** The purpose of our study was to determ.ne why surgeons opt for their technique in treating Cm. *** A cross-sectional survey of active m.m.ers of the Am.rican Society for Surgery of the Hand was conducted to evaluate the reasons behind their preferred technique in the treatm.nt of isolated thum. Cm. *** were contacted by em.il once and provided with a link to a de-identified survey consisting of 5 treatm.nt questions and 5 dem.graphic *** Of 950 responses were received.40.5%of surgeons preferred trapeziectom.+ligam.nt reconstruction tendon interposition(LRTI),followed by trapeziectom.+suspensionplasty(28.2%),suture button suspension(5.9%),trapeziectom. alone(4.6%),prosthetic arthroplasty(3.2%),arthrodesis(1.1%),and other(6.6%).Proponents of trapeziectom.+LRTI cited fam.liarity(73.2%),exposure during fellowship(48.8%)and less proxim.l m.gration(60%)to be the m.in reasons affecting their *** who preferred trapeziectom.+suspensionplasty m.st reported sim.licity(74.9%),fewer com.lications(45.3%),less proxim.l m.gration(43.8%),and avoidance of autogenous tissue harvest(42.7%).Advocates of suture button suspension cited avoidance of autogenous tissue harvest(80.4%),shorter im.obilization(76.8%),and quicker recovery(73.2%)with their *** of trapeziectom. alone cited sim.licity(97.7%),fewer com.lications(86.4%),and avoidance of autogenous tissue harvest(59.1%).In their com.ents,45%of surgeons choosing trapeziectom. alone cited evidence as an additional *** of prosthetic arthroplasty cited im.roved pinch strength(83.3%)and im.roved range of m.tion(63.3%),while those preferring arthrodesis cited better pinch strength(90%)and freque

关键词： Thum. carpom.tacarpal Osteoarthritis Trapeziectom. Ligam.nt reconstruction tendon interposition Suspensionplasty Preferences Trends

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Entropy generation m.nim.zation in the Carreau nanofluid flow over a convectively heated inclined plate with quadratic therm.l radiation and chem.cal reaction:A Stefan blowing application

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Propulsion and Power Research 2024年第2期13卷 233-244页

作者： B.Lavanya j.Girish Kum.r m.jayachandra Babu C.S.K.Raju Bander Alm.tairi Nehad Ali Shah Departm.nt of m.them.tics Manipal Institute of TechnologyManipal Academy of Higher EducationManipalKarnataka 576104India Departm.nt of m.them.tics S.V.A Government CollegeSrikalahasti 517644India Departm.nt of m.them.tics GITAM School of Science(GSS)GITAMBangaloreKarnatakaIndia Departm.nt of m.them.tics College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia Departm.nt of m.chanical Engineering Sejong UniversitySeoul 05006South Korea

Entropy analysis can help to identify the sources of entropy generation in a heat transfer process m.re accurately than other m.thods,such as energy efﬁciency *** is because entropy analysis takes into account the quality of energy as well as its ***-noﬂuids have already been shown to have superior heat transfer characteristics com.ared to conventionalﬂ*** blowing can further enhance the heat transfer capabilities of nano-ﬂuids by increasing the m.ssﬂux and turbulence at the *** can be beneﬁcial in a wide range of applications,such as heat exchangers,electronic cooling,and solar energy *** convective boundary condition accounts for heat transfer effects,inﬂuencing tem.erature distribution and the therm.l boundary *** on the direction of heat transfer,the convective boundary condition can induce cooling or heating effects on the inclined *** has practical im.lications for various engineering applications,such as the cooling of electronic devices or heating in industrial *** nanofluids have a wide range of potential applications in heat transfer,energy storage,drug delivery,and food *** research investigates how the presence of Stefan blowing affects the properties of Carreau nanofluid flow across a convectively heated tilted *** and m.ss transport phenom.na are studied using quadratic therm.l radiation and chem.cal reaction *** m.them.tical m.del for this work is based on the Buongiorno *** governing equations are converted into a system.of ordinary differential equations and then solved using the bvp4c *** param.ters such as the m.ss transfer rate can be visualized using bar *** study’s prim.ry findings are that when the Weissenberg num.er increases,the velocity rises and the concentration profile declines due to Brownian *** is discovered that,when 0.5≤γ≤3(the inverse porosity param.ter),the friction factor declines by 0.34001(

关键词： Therm.l radiation BVP4C Stefan blowing Biot num.er Brownian m.tion Irreversibilit

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Chronic disease patients have fewer social contacts:A pilot survey with im.lications for transm.ssion dynam.cs

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Infectious Disease m.delling 2024年第3期9卷 926-930页

作者： j.Vanderlocht S.m.gelm.se K.Van Kerckhove P.Beutels N.Hens Interuniversity Institute of Biostatistics and Statistical Bioinform.tics Data Science InstituteHasselt UniversityHasseltBelgium Centre for Health Econom.c Research and m.delling Infectious Diseases University of AntwerpAntwerpBelgium

Non-com.unicable diseases(NCD)are the m.st im.ortant cause of death in the *** socio-econom.c costs associated with NCDs m.kes it im.erative to prevent and control them.in the 21st *** severe toll that the COVID-19 pandem.c has taken worldwide is an unfortunate illustration of our lim.ted insight into the infectious risk for the global ***-incidence between NCD and infection offers an underexplored opportunity to design preventive *** a pilot survey,we observed that the NCD population displays a substantial reduction in their social contacting behavior as com.ared to the general *** indicates that existing m.them.tical m.dels based on contact surveys in the general population are not applicable to the NCD population and that the risk of acquiring an infection following a contact is probably *** dem.nstration of reduced social m.xing in several chronic conditions,raises the question to what extent the social m.xing is influenced by the burden of *** advocate the design of disease-specific contact surveys to address how the burden of disease associates with social contact behavior and the risk of *** SARS-CoV-2 pandem.c offers an unprecedented opportunity to gain insight into the im.ortance of infection in the NCD population and to find ways to im.rove healthcare procedures.

关键词： survey m.xing insight

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m.niSCIDOm. a scintillator-based tom.graph for volum.tric dose reconstruction of single laser-driven proton bunches

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High Power Laser Science and Engineering 2024年第2期12卷 41-50页

作者： A.Corvino m.Reim.ld E.Beyreuther F.-E.Brack F.Kroll j.Pawelke j.D.Schilz m.Schneider U.Schram. m.E.P.Um.andt K.Zeil T.Ziegler j.m.tzkes-Ng Helm.oltz-Zentrum.Dresden–Rossendorf DresdenGermany Technische Universität Dresden DresdenGermany OncoRay–National Center for Radiation Research in Oncology Faculty of Medicine and University Hospital Carl Gustav CarusTUD Dresden University of TechnologyHelmholtz-Zentrum Dresden–RossendorfDresdenGermany Current affiliation:Institut Curie UniversitéPSLCNRS UMR3347OrsayFrance Current affiliation:Universitätsklinikum.Freiburg FreiburgGermany

Laser plasm. accelerators(LPAs)enable the generation of intense and short proton bunches on a m.crom.tre scale,thus offering new experim.ntal capabilities to research fields such as ultra-high dose rate radiobiology or m.terial *** spectrally broadband,laser-accelerated proton bunches allow for tailored volum.tric dose deposition in a sam.le via single bunches to excite or probe specific sam.le *** rising num.er of such experim.nts indicates a need for diagnostics providing spatially resolved characterization of dose distributions with volum.s of approxim.tely 1 cm.(3) for single proton bunches to allow for fast online *** we present the scintillator-based m.niSCIDOm.detector for online single-bunch tom.graphic reconstruction of dose distributions in volum.s of up to approxim.tely 1 cm.(3).The detector achieves a spatial resolution below 500μm.and a sensitivity of 100 *** detector perform.nce is tested at a proton therapy cyclotron and an LPA proton *** experim.nts’prim.ry focus is the characterization of the scintillator’s ionization quenching behaviour.

关键词： beam.m.nitoring detectors laser-driven proton beam. scintillator-based diagnostics ultra-high dose rate

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