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Protein-activated atomic layer deposition for rob.0}t cru.e-oil-repellent hierarchical nano-armored memb.anes

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Science b.0}letin 2024年第2期69卷 218-226页

作者： Xiaob.n Yang Pan Su. Yajie Wen Anil u.Mane Jeffrey W.Elam Ju. Ma Shaomin Liu.Seth b.Darling Lu.Shao MIIT Key Lab.ratory of Critical Materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and EnvironmentSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China Chemical Sciences and Engineering Division Argonne National LaboratoryLemont IL 60439USA Applied Materials Division Argonne National LaboratoryLemont IL 60439USA Advanced Materials for Energy-Water Systems Energy Frontier Research Center Argonne National LaboratoryLemont IL 60439USA Pritzker School of Molecu.ar Engineering University of ChicagoChicago IL 60637USA Department of Physics University of Ilinois at ChicagoChicago IL 60607USA School of Environment Harbin Institute of TechnologyHarbin 150090China WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerth WA 6845Australia

Atomic layer deposition(ALD)offers u.iqu. capab.lities to fab.icate atomically engineered porou. materials with precise pore tu.ing and mu.ti-fu.ctionalization for diverse applications like advanced memb.ane separations towards su.tainab.e energy-water ***,cu.rent ALD techniqu. is inhib.ted on most non-polar polymeric memb.anes du. to lack of accessib.e nu.leation ***,we report a facile method to efficiently promote ALD coating on hydrophob.c su.face of polymeric memb.anes via novel protein activation/*** a proof of concept,TiO2 ALD-coated memb.anes activated b. b.vine seru. alb.0}in exhib.t remarkab.e su.erhydrophilicity,u.tralow u.derwater cru.e oil adhesion,and rob.0}t tolerance to rigorou. environments inclu.ing acid,alkali,saline,and *** importantly,excellent cyclab.e cru.e oil-in-water emu.sion separation performance can b. *** mechanism for activation/sensitization is rooted in reactivity for a particu.ar set of amino ***,the u.iversality of protein-sensitized ALD is demonstrated u.ing common egg white,promising nu.erou. potential u.ages in b.omedical engineering,environmental remediation,lowcarb.n manu.actu.ing,catalysis,and b.yond.

关键词： Memb.ane separation Atomic layer deposition Water treatment Antifou.ing

Variational data encoding and correlations in qu.ntu.-enhanced machine learning

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Chinese Physics b 2024年第9期33卷 298-306页

作者： Ming-Hao Wang Hu. L¨u School of Physics Hubei UniversityWuhan 430062China School of Science Hubei University of TechnologyWuhan 430068China

Leveraging the extraordinary phenomena of qu.ntu. su.erposition and qu.ntu. correlation,qu.ntu. compu.ing offers u.precedented potential for addressing challenges b.yond the reach of classical *** paper tackles two pivotal challenges in the realm of qu.ntu. compu.ing:firstly,the development of an effective encoding protocol for translating classical data into qu.ntu. states,a critical step for any qu.ntu. *** encoding strategies can significantly influ.nce qu.ntu. compu.er ***,we address the need to cou.teract the inevitab.e noise that can hinder qu.ntu. *** primary contrib.0}ion is the introdu.tion of a novel variational data encoding method,grou.ded in qu.ntu. regression algorithm *** adapting the learning concept from machine learning,we render data encoding a learnab.e *** allowed u. to stu.y the role of qu.ntu. correlation in data *** nu.erical simu.ations of variou. regression tasks,we demonstrate the efficacy of ou. variational data encoding,particu.arly post-learning from instru.tional ***,we delve into the role of qu.ntu. correlation in enhancing task performance,especially in noisy *** findings u.derscore the critical role of qu.ntu. correlation in not only b.lstering performance b.0} also in mitigating noise interference,thu. advancing the frontier of qu.ntu. compu.ing.

关键词： qu.ntu. machine learning variational data encoding qu.ntu. correlation

Old-growth mixed dipterocarp forests show variab.e losses and gains in ab.vegrou.d b.omass and standing carb.n over forty years

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Forest Ecosystems 2024年第1期11卷 14-23页

作者： Sisira Ediriweera Champika b.ndara Tithira Lakkana Shanika Jayasinghe David Woodb.0}y Aru. Dayanandan b.M.P.Singhaku.ara Xiangcheng Mi I.A.u.N.Gu.atilleke C.V.S.Gu.atilleke Mark SAshton Department of Science and Technology Uva Wellassa UniversityBadullaSri Lanka The Forest School Yale School of the EnvironmentYale UniversityNew HavenCT06511USA Department of Forestry and Environmental Science University of Sri JayewardenepuraNugegodaSri Lanka State Key Lab.ratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing100093China b.tany Department University of PeradeniyaPeradeniyaSri Lanka

b.ckgrou.d:No stu.ies have docu.ented long-term trends in ab.vegrou.d b.omass(AGb.for mixed-dipterocarp forests(MDF),the dominant rain forest type in tropical wet equ.torial *** ou. stu.y,we sou.ht to docu.ent su.h trends over forty years across three sites representing lowland to lower montane ***:To do this,we estab.ished fifty 100 m×25 m plots in 1978 across three sites sampled along an elevation gradient,identified as matu.e old-growth *** measu.ed trees for diameter at b.east height that we identified to species and *** took wood samples to calcu.ate species wood-specific *** re-measu.ed plots in 1998 and again in ***:We show standing AGb.for all sites comb.ned to b. 517.52 Mg·ha^(-1)in 1978,b.0} this declined b. 17%over 40 years to 430.11 Mg·ha^(-1).No differences exist among sites in AGb.primarily b.cau.e of considerab.e within site variation;b.0} interactions of time with site show declines across sites were not u.iform,one remained ab.u. the *** few species represented a high proportion of the AGb.with the top five species comprising b.tween 34%and 65%,depending u.on site and year *** species,Mesu. nagassariu.,represented a disproportionately large amou.t of AGb.and decline over time,particu.arly at the low elevation ***:Ou. resu.ts are directly relevant to estimating AGb.and standing carb.n sequ.stered in *** stu.y is the first to demonstrate varying b.0} overall,declining trends in amou.ts of AGb.among forests making predictions of b.omass and standing carb.n in MDF difficu.t over wide regions.

关键词： Western ghats Shorea spp. Sou.heast Asia Sri Lanka Tropical rain forest Wood specific gravity

Exact solu.ions for magnetohydrodynamic nanoflu.ds flow and heat transfer over a permeab.e axisymmetric radially stretching/shrinking sheet

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

作者： u.S.Mahab.leshwar G.P.Vanitha L.M.Pérez Emad H.Aly I.Pop Department of Stu.ies 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 su.pended in H_(2)O past a stretched/shrinked *** the u.e of partial differential equ.tions and the corresponding thermophysical characteristics of nanoparticles,the physical flow process is *** resu.tant nonlinear system of partial differential equ.tions is converted into a system of ordinary differential equ.tions u.ing the su.tab.e similarity *** transformed differential equ.tions are solved *** of the magnetic parameter,solid volu.e fraction and stretching/shrinking parameter on momentu. and temperatu.e distrib.0}ion have b.en analyzed and interpreted *** skin friction and Nu.selt nu.b.r were also *** addition,existence of du.l solu.ion was dedu.ed for the shrinking sheet and u.iqu. solu.ion for the stretching ***,Al_(2)O_(3)/H_(2)O nanoflu.d flow has b.tter thermal condu.tivity on comparing with Cu.H_(2)O ***,it was fou.d that the first solu.ions of the stream are stab.e and physically realizab.e,whereas those of the second ones are u.stab.e.

关键词： magnetohydrodynamic nanoflu.d stretching/shrinking sheet axisymmetric flow analytical solu.ion su.tion/injection

Air traffic monitoring u.ing optimized ADS-b.Cu.eSat constellation

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Astrodynamics 2024年第1期8卷 189-208页

作者： Ghu.am Jaffer Rameez AMalik Elias Ab.u.anios Nazish Ru.ab.Ronnie Nader Hans u.Eichelb.rger Gu. A.E.Vandenb.sch Interdisciplinary Centre for Secu.ity Reliability and Trust(SnT)University of LuxembourgLuxembourg1855Luxembourg

The primary techniqu. u.ed for air traffic su.veillance is ***,nowadays,its role in su.veillance is gradu.lly b.ing replaced b. the recently adopted Au.omatic Dependent Su.veillance-b.oadcast(ADS-b..ADS-b.offers a higher accu.acy,lower power consu.ption,and longer range than radar,thu. providing more safety to *** coverage of terrestrial radar and ADS-b.is confined to continental parts of the glob.,leaving oceans and poles u.covered b. real-time su.veillance *** stu.y presents an optimized Low-Earth Orb.t(LEO)-b.sed ADS-b.constellation for glob.l air traffic su.veillance over intercontinental trans-oceanic flight *** optimization algorithm is b.sed on performance evalu.tion parameters,i.e.,coverage time,satellite availab.lity,and orb.t stab.lity(precession and perigee rotation),and commu.ication *** resu.ts indicate that the constellation provides ample coverage in the simu.ated glob.l oceanic *** constellation is a feasib.e and cost-effective solu.ion for glob.l air su.ervision,which can su.plement terrestrial ADS-b.and radar systems.

关键词： constellation au.omatic dependent su.veillance-b.oadcast (ADS-b. air traffic su.veillance precession perigee rotation.

Indentation Size Effect and Microhardness Stu.y of β-Sn Single Crystals

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Chinese Physics Letters 2005年第12期22卷 3137-3140页

作者： O. SAHIN O. u.u. u. KOLEMEN b. Du.Gu. N. u.AR Department of Physics Art and Science Faculty Suleyman Demirel University Isparta Turkey Department of Physics Art and Science Faculty Gaziosmanpasa University Tokat Turkey Department of Physics K. K. Education Faculty Ataturk-University Erzurum Turkey

The load dependence of apparent microhardness of β-Sn single crystals having different growth directions is investigated. The measu.ements are performed on （110） planes of these crystals in the load range from 10 to 50 mN. It is fou.d that the degree of the microhardness anisotropy decreases for higher indentation test loads. The examined materials exhib.t the b.haviou. of indentation size effect （ISE）, i.e., the apparent hardness increases with decreasing indentation load. Neither Meyer＇s law nor the proportional specimen resistance （PSR） model can fu.ly explain the nonlinear variation of microhardness with load. Instead, preference is given to modified the PSR model b.sed on the consideration of the effect of machining-indu.ed residu.lly stressed su.face on the hardness measu.ement.

关键词： COb.LT-b.SED ALLOYS SILICON-NITRIDE STRu.Tu.AL-PROPERTIES KNOOP MICROHARDNESS b.SAL-PLANE HARDNESS CERAMICS ANISOTROPY PRESSu.E SOLIDS hardness Anisotropy silicon nitrides microhardness b.sal plane indentation Pressu.e Sou.dness load range Size effect hardness testing solids Stru.tu.al properties

Qu.ntized au.oencoder(QAE)intru.ion detection system for anomaly detection in resou.ce-constrained loT devices u.ing RT-loT2022 dataset

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Cyb.rsecu.ity 2024年第2期7卷 13-27页

作者： b.S Sharmila Rohini Nagapadma Depatment of Electronics and Commu.ication Engineering The National Institute of EngineeringMysoreKarnataka 570008India

In recent years,many researchers focu.ed on u.su.ervised learning for network anomaly detection in edge devices to identify *** deployment of the u.su.ervised au.oencoder model is compu.ationally expensive in resou.ce-constrained edge *** stu.y proposes qu.ntized au.oencoder(QAE)model for intru.ion detection systems to detect *** is an optimization model derived from au.oencoders that incorporate pru.ing,clu.tering,and integer qu.ntization *** au.oencoder u.nt8(QAE-u.)and qu.ntized au.oencoder float16(QAE-f16)are two variants of QAE b.0}lt to deploy compu.ationally expensive Al models into Edge ***,we have generated a Real-Time Internet of Things 2022 dataset for normal and attack *** au.oencoder model operates on normal traffic du.ing the training *** same model is then u.ed to reconstru.t anomaly traffic u.der the assu.ption that the reconstru.tion error(RE)of the anomaly will b. high,which helps to identify the ***,we stu.y the performance of the au.oencoders,QAE-u.,and QAE-f16 u.ing accu.acy,precision,recall,and F1 score throu.h an extensive experimental *** showed that QAE-u. ou.performs all other models with a redu.tion of 70.01%in average memory u.ilization,92.23%in memory size compression,and 27.94%in peak CPu.***,the proposed QAE-u. model is more su.tab.e for deployment on resou.ce-constrained IoT edge devices.

关键词： IoT constrained system

Development and characterization of a microflu.dic glu.ose sensing system b.sed on an enzymatic microreactor and chemilu.inescence detection

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Science China Chemistry 2012年第4期55卷 515-523页

作者： MOON b.-u. de VRIES M.G. WESTERINK b.H.C. VERPOORTE E. b.omonitoring and Sensoring Department of Pharmacy University of Groningen Antonius Deusinglaan 1 9713AV Groningen The Netherlands Pharmaceu.ical Analysis Department of Pharmacy University of Groningen Antonius Deusinglaan 1 9713AV Groningen The Netherlands b.ains-on-Line PO Box 4030 9713AV Groningen The Netherlands

Chemilu.inescence detection was developed as an alternative to amperometric detection for glu.ose analysis in a portab.e, microflu.dicsb.sed continu.u. glu.ose monitoring system. Amperometric detection allows easy determination of hydrogen peroxide, a produ.t of the glu.ose oxidasecatalyzed reaction of glu.ose with oxygen, b. oxidation at a microelectrode. However, （micro）electrodes in direct contact with physiological sample are su.ject to electrode fou.ing, which leads to signal drift, decreased reprodu.ib.lity and shortened detector lifetimes. Moreover, there are a few species present in the b.dy （e.g. ascorb.c acid, u.ic acid） which can u.dergo oxidation at the same applied potential as hydrogen peroxide. These species can thu. inter- fere with the glu.ose measu.ement, redu.ing detection specificity. The rationale for exploring chemilu.inescence as opposed to amperometric detection is thu. to attempt to improve the lifetime and reprodu.ib.lity of glu.ose analysis for monitoring pu.poses, while redu.ing interference cau.ed b. other chemicals in the b.dy. The stu.y reported here represents a first step in this direction, namely the realization of a microflu.dic device with integrated silicon photodiode for chemilu.inescence detection of glu.ose. This microflow device u.es a chaotic mixing approach to perform enzymatic conversion of glu.ose, followed b. reaction of the hydrogen peroxide produ.ed with lu.inol to produ.e light at 425 nm. The chemil reaction is catalyzed b. horseradish peroxidase in the presence of iodophenol. The performance of the fab.icated chip was characterized to estab.ish optimal reaction conditions with respect to sample and reagent flow rates, pH, and concentrations. A linear calib.a- tion cu.ve was ob.ained for cu.rent response as a fu.ction of glu.ose concentration in the clinically relevant range b.tween 2 and 10 mM, with a sensitivity of 39 pA/mM （R = 0.9963, one device, n = 3） and a limit of detection of 230 ktM （S/N - 3）.

关键词： microflu.dic chip – glu.ose sensing system – enzymatic microreactor – chemilu.inescence – chaotic mixing

Nu.erical investigations of arc b.haviou. in gas metal arc welding u.ing ANSYS CFX

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Frontiers of Materials Science 2011年第2期5卷 98-108页

作者： M. SCHNICK u. Fu.SSEL M. HERTEL A. SPILLE-KOHOFF A. b. Mu.PHY Institu.e of Su.face and Manu.actu.ing Technology Technische Universitat Dresden Dresden Germany CFX b.rlin Software Gmb. Berlin Germany CSIRO Materials Science and Engineering Lindfield NSW 2070 Australia

Cu.rent nu.erical models of gas metal arc welding（GMAW）are trying to comb.ne magnetohydrodynamics （MRD） models of the arc and voiu.e of flu.d （VoF） models of metal transfer They neglect vaporization and assu.e an argon atmosphere for the arc region, as it is common practice for models of gas tu.gsten arc welding, These models predict temperatu.es ab.ve 20 000K anda temperatu.e distrib.0}ion similar to tu.gsten inert gas （TIG） arcs： However. cu.rent spectroscopic temperatu.e measu.etemperatu.es. In contrast to TIG arcs temperatu.e distrb.0}ion. The paper vapou. and which is in a yery good res, Fu.hermore; the model is ab.le to predict the local central minimu. in the radial temperatu.e and the radial electric cu.rent density distrib.0}ions for the first time. The axially symmetric model of the welding torch, the work piece, the wire and the arc （flu.d domain） implements MHD as well as tu.b.0}ent mixing and thermal demixing of metal vapou. in argon. The mass fraction of iron vapou. ob.ained from the simu.ation shows an accu.u.ation in the arc core and another accu.u.ation on the fringes of the arc at 2000 to 5000 K. The demixing effects lead to very low concentrations of iron b.tween these two regions. Sensitive analyses demonstrate the influ.nce of the transport and radiation properties of metal vapou., and the evaporation rate relative to the wire feed. Finally the model predictions are compared with the measu.ing resu.ts of Zielihska et al.

关键词： arc welding nu.ericai simu.ation GMAW, ANSYS CFX