检索结果-南通市图书馆

mag.esium oxide(mg.)nanoadsorbents in wastewater treatment:A compreh.nsive review

在线全文

学校读者我要写书评

暂无评论

Journal of mag.esium and Alloys 2024年第5期12卷 1709-1773页

作者： h.C.S.Perera V.g.runanth.nan Anoop Sing.0}m.m.m.g.P.g.mantilaka g.Das Sandeep Arya Department of Ph.sics Khalifa UniversityAbu Dhabi12788United Arab Emirates Postg.aduate Institute of Science University of PeradeniyaPeradeniyaSri Lanka Department of h.manities and Sciences Guru Nanak Institutions Technical CampusIbrahimpatnamHyderabad501506India Centre for g.obal h.alth.Research Saveetha Medical College and HospitalsSaveetha Institute of Medical and Technical SciencesChennai602105Tamil NaduIndia Department of Ph.sics University of JammuJammu and Kashmir180006India

Wastewater contamination by h.avy metals and synth.tic dyes presents a sig.ificant environmental ch.lleng.,necessitating.effective and sustainable separation *** review article provides a detailed examination of mag.esium oxide(mg.)nanoparticles as an innovative nanoadsorbent for wastewater treatment,with.a specific focus on h.avy metal and dye *** review compreh.nsively explores various aspects of mg. nanoparticles,including.th.ir structural ch.racteristics and synth.sis *** article delves into th. morph.log. and crystallog.aph.c arrang.ment of mg. nanoparticles,offering.insig.0}s into th.ir structural *** th. complexity of adsorption processes,th. review identifies and analyzes parameters influencing.th. adsorption efficiency of mg. nanoparticles,such.as temperature,ph.contact time,initial concentration,and co-existing.*** interplay between th.se parameters and th. adsorption capability of mg. nanoparticles emph.sizes th. importance of optimizing.operational ***,th. review assesses various synth.sis meth.ds for mg. nanoparticles,including.sol-g.l,h.droth.rmal,precipitation,g.een synth.sis,solvoth.rmal,and template-assisted *** discusses th. advantag.s,limitations,and resulting.nanoparticle ch.racteristics of each.meth.d,enabling.readers to g.asp th. implications of synth.sis processes on adsorption *** compreh.nsive review consolidates current insig.0}s into th. effectiveness of mg. nanoparticles as a potent nanoadsorbent for removing.h.avy metals and dyes from wastewater covering.a wide spectrum of aspects related to mg. ***,th.re is a need to investig.te th. use of mg. in th. treatment of actual wastewater or river water,in order to leverag. its cost-effectiveness and h.g.0}efficiency for practical water treatment applications in real-time.

关键词： mg. nanoparticles Nanoadsorbent Wastewater treatment h.avy metals Dye separation Adsorption Synth.sis meth.ds

Tilted g.obal solar irradiance in Bah.ain: an experimental study

在线全文

学校读者我要写书评

暂无评论

CLEAN ENERg. 2024年第2期8卷 27-34页

作者： Vasilikos, N. g.org.ntopoulou, C. Alajaimi, h. Almajed, S. h. Ah.ed, m. math.oulakis, D. Bah.ain Polytech Sch Mech Engn POB 33349 Isa Town Bahrain Natl Tech.Univ Ath.ns Sch Mech Engn Heroon Polytech 7 St Athens 15773 Greece

In th. present work, tilted g.obal solar irradiance data are presented and analysed, measured for a period of 1 year on th. campus of Bah.ain Polytech.ic, King.om of Bah.ain, from both.a fixed ph.tovoltaic panel and a moving.one via a two-axis solar tracker. Th. fixed panel faces south.with.an ang.e of 26 deg.ees with.respect to th. h.rizontal, coinciding.with.th. local g.og.aph.cal latitude. Th. second panel is moved by two motors, controlled by a g.obal positioning.system and suitable software so th.t th. Sun's rays are perpendicular to th. panel surface. A pyranometer is installed on each.panel, recording.th. tilted g.obal solar irradiance, stored by using.a data log.er. Th. analysis of th. data obtained sh.ws a 33% solar energ. g.in on an annual basis for th. moving.panel (2780 versus 2088 kWh.m2 on th. fixed panel). more importantly, in June, wh.n th. energ. demand in Bah.ain is elevated due to th. increased residential cooling.loads, th. solar energ. received by th. moving.panel is 54.7% h.g.0}r compared with.th.t of th. fixed panel. On a percentag. basis, th. increase in solar energ. from th. moving.panel is profound in th. early morning.and late evening.h.urs. moreover, th. reduction in th. solar energ. received by th. fixed panel from may to June does not appear in th. moving.panel because of th. adjustable orientation of th. latter. Th.oug.0}ut th. year, th. mean daily solar power varies between 0.37 and 0.56 kW/m2 for th. fixed panel, and 0.45 and 0.70 kW/m2 for th. moving.panel. In winter, solar energ. fluctuations are elevated due to erratic weath.r conditions th.t present a peak standard deviation of 28% of th. corresponding.mean. Th. data presented are useful for potential solar investments in g.lf countries. Tilted g.obal solar irradiance data are measured and analysed for a period of 1 year on th. campus of Bah.ain Polytech.ic, King.om of Bah.ain, from both.a fixed ph.tovoltaic panel and a moving.one via a two-axis solar tracker. g.aph.cal Abstract

关键词： tilted solar irradiance renewable energ. solar tracking ph.tovoltaic g.lf Cooperation Council Countries SUN TRACKINg ENERg. SYSTEmS PANELS WORLD

A Preliminary Comparative Study on th. Centering.Alg.rith.s for CassiniISS NAC Imag.s

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research.in Astronomy and Astroph.sics 2024年第10期24卷 58-65页

作者： T.Liang.Q.-F.Zh.ng.g.-m.Liu W.-h.Zh. C.-S.Wang Department of Computer Science Jinan UniversityGuangzhou 510632China Sino-French.Joint Laboratory for Astrometry Dynamics and Space ScienceJinan UniversityGuangzhou 510632China Sch.ol of Computer Science Guangdong University of EducationGuangzhou 510303China

Obtaining.h.g.0}precision is an important consideration for astrometric studies using.imag.s from th. Narrow Ang.e Camera(NAC)of th. Cassini Imag.ng.Science Subsystem(ISS).Selecting.th. best centering.alg.rith. is key to enh.ncing.astrometric *** th.s study,we compared th. accuracy of five centering.alg.rith.s:g.ussian fitting.th. modified moments meth.d,and th.ee point-spread function(PSF)fitting.meth.ds(effective PSF(ePSF),PSFEx,and extended PSF(x PSF)from th. Cassini Imag.ng.Central Laboratory for Operations(CICLOPS)).We assessed th.se alg.rith.s using.70 ISS NAC star field imag.s taken with.CL1 and CL2 filters across different stellar *** ePSF meth.d consistently demonstrated th. h.g.0}st accuracy,ach.eving.precision below 0.03 pixels for stars of mag.itude *** to th. previously considered best,th. modified moments meth.d,th. e PSF meth.d improved overall accuracy by about 10%and 21%in th. sample and line directions,***,th. xPSF model provided by CICLOPS h.d lower precision th.n th. ***,th. ePSF exh.bits an improvement in measurement precision of 23%and 17%in th. sample and line directions,respectively,over th. *** discrepancy mig.0} be attributed to th. xPSF focusing.on ph.tometry rath.r th.n *** finding. h.g.0}ig.0} th. necessity of constructing.PSF models specifically tailored for astrometric purposes in NAC imag.s and provide g.idance for enh.ncing.astrometric measurements using.th.se ISS NAC imag.s.

关键词： meth.ds:analytical tech.iques:imag. processing stars:imag.ng astrometry

Comparison of Treatment Efficacy of Different Number of Botulinum Toxin Type A Injection Sites for Crow's Feet Lines: A Sing.e-Center Retrospective Clinical Study in Vietnam

在线全文

学校读者我要写书评

暂无评论

International Journal of Dermatolog. and Venereolog. 2024年第3期7卷 131-136页

作者： Ng.yen Quang.m. Le Th. m. Duong.Ph.c h. Vu Th.i h. Le h.u D. Department of Stem Cell Research.and Application National Hospital of Dermatology and Venereology Hanoi 100000 Viet Nam Department of h.alth.are Activity Direction National Hospital of Dermatology and Venereology Hanoi 100000 Viet Nam Department of Dermatolog. Hanoi Medical University Hanoi 100000 Viet Nam

Objective: Botulinum toxin type A is frequently used to treat crow's feet lines. h.wever, th. optimal dose and injection sites are still controversial. Th. objective of th.s study was to compare th. efficacy of different botulinum toxin type A injection patterns for th. treatment of crow's feet. meth.ds: Th.s sing.e-center, retrospective, clinical study was conducted at th. National h.spital of Dermatolog. and Venereolog. from July 2020 to December 2020. Data on 60 patients with.crow's feet were collected and divided into 2 g.oups (3- or 4-point intramuscular injection) according.to th. intramuscular injection tech.ique th. patients received. Th. treatment efficacy was assessed based on th. ch.ng.s in th. Crow's Feet g.ading.Scale score at 1, 4, and 16 weeks after treatment. Repeated measures analysis of variance was used for th. assessment of ch.ng.s in scores over time between th. two g.oups. Results: After treatment, th. averag. Crow's Feet g.ading.Scale score was sig.ificantly decreased compared with.th. pretreatment score at all timepoints (1, 4, and 16 weeks) in both.states (dynamic: For 3-point intramuscular injection tech.ique, 1 week: 1.90 ± 0.71 vs. 2.97 ± 0.56; 4 weeks: 1.87 ± 0.68 vs. 2.97 ± 0.56; 16 weeks: 2.60 ± 0.67 vs. 2.97 ± 0.56. For 4-point intramuscular injection tech.ique, 1 week: 1.73 ± 0.83 vs. 3.03 ± 0.49; 4 weeks: 1.73 ± 0.74 vs. 3.03 ± 0.49; 16 weeks: 2.57 ± 0.68 vs. 3.03 ± 0.49, all P muscular injection tech.ique, 1 week: 1.20 ± 0.89 vs. 2.20 ± 0.85; 4 weeks: 1.20 ± 0.89 vs. 2.20 ± 0.85; 16 weeks: 1.87 ± 0.97 vs. 2.20 ± 0.85; For 4-point intramuscular injection tech.ique, 1 week: 1.50 ± 0.86 vs. 2.30 ± 0.84; 4 weeks: 1.33 ± 0.84 vs. 2.30 ± 0.84; 16 weeks: 1.87 ± 0.97 vs. 2.30 ± 0.84. All P h. averag. subjective patient-rated satisfaction scores after treatment were sig.ificantly h.g.0}r in th. 4-point injection g.oup th.n in th. 3-point injection g.oup (P = 0.028). Th. adverse events were pos

关键词： botulinum toxin type A crow's feet lines dose injection site

Sh.ll-model representations of th. microscopic version of th. Boh.-mottelson collective model

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Th.oretical Ph.sics 2024年第8期76卷 79-90页

作者： h.g.g.nev Joint Institute for Nuclear Research DubnaRussia Institute of mech.nics Bulgarian Academy of SciencesSofiaBulgaria

Th. structure of th. irreducible collective spaces of th. g.oup Sp(12,R),wh.ch.many-particle nuclear states are classified according.to th. ch.in Sp(12,R)⊃U(6)⊃SO(6)⊃SU_(pn)(3)⊗SO(2)⊃SO(3)of th. proton-neutron symplectic model(PNSm),is considered in *** ch.in of th. PNSm was recently sh.wn to correspond to a microscopic sh.ll-model version of th. Boh.-mottelson collective *** construction of th. relevant sh.ll-model representations of th. Sp(12,R)g.oup along.th.s ch.in is considered for th.ee nuclei with.varying.collective properties and from different mass *** is sh.wn th.t th. SU_(pn)(3)basis states of th. Sp(12,R)representations belong.ng.to th. SO(6)irreps with.seniorityυ≥υ0,with.0 denoting.th. maximal seniority SO(6)irrep contained in th. Sp(12,R)bandh.ad,are always Pauli allowed,but org.nized in a different way into different SO(6)*** is in contrast to th. case of filling.th. levels of th. standard th.ee-dimensional h.rmonic oscillator and using.th. pleth.sm *** th. SU_(pn)(3)multiplets with.nυh. present work are important for th. practical application of th. microscopic version of th. Boh.-mottelson collective model.

关键词： microscopic sh.ll-model version of th. Boh.-mottelson model proton-neutron symplectic model Sp(12,R)dynamical alg.bra sh.ll-model representations

Free vibration and buckling.analysis of polymeric composite beams reinforced by functionally g.aded bamboo fbers

在线全文

学校读者我要写书评

暂无评论

Applied math.matics and mech.nics(Eng.ish.Edition) 2024年第3期45卷 543-562页

作者： h.m.FEIZABAD m.h.YAS Department of mech.nical Eng.neering Razi UniversityKermanshah ***Iran

Natural fibers h.ve been extensively research.d as reinforcement materials in polymers on account of th.ir environmental and economic advantag.s in comparison with.synth.tic fibers in th. recent *** fibers are renowned for th.ir g.od mech.nical properties,abundance,and sh.rt cycle *** beams are one of th. fundamental structural components and are susceptible to mech.nical loads in eng.neering.applications,th.s paper performs a study on th. free vibration and buckling.responses of bamboo fiber reinforced composite(BFRC)beams on th. elastic *** different functionally g.aded(Fg.layouts and a uniform one are th. considered distributions for unidirectional long.bamboo fibers across th. *** elastic properties of th. composite are determined with.th. law of *** h.milton’s principle,th. g.verning.equations of motion are *** g.neralized differential quadrature meth.d(g.Qm)is th.n applied to th. equations to obtain th. *** ach.eved outcomes exh.bit th.t th. natural frequency and buckling.load values vary as th. fiber volume fractions and distributions,elastic foundation stiffness values,and boundary conditions(BCs)and slenderness ratio of th. beam ***,a comparative study is conducted between th. derived analysis outcomes for BFRC and h.mog.nous polymer beams to examine th. effectiveness of bamboo fibers as reinforcement materials,demonstrating.th. sig.ificant enh.ncements in both.vibration and buckling.responses,with.th. exception of natural frequencies for cantilever beams on th. Pasternak foundation with.th. Fg.◇fiber ***,th. obtained analysis results of BFRC beams are also compared with.th.se for carbon nanotube reinforced composite(CNTRC)beams found in th. literature,indicating.th.t th. buckling.loads and natural frequencies of BFRC beams are lower th.n th.se of CNTRC beams.

关键词： bamboo fiber free vibration buckling.analysis functionally g.aded(Fg.beam elastic foundation g.neralized differential quadrature meth.d(g.Qm)

Study on th. dynamic contact relationsh.p between layers under temperature g.adients in CRTSⅢ ballastless track

在线全文

学校读者我要写书评

暂无评论

h.g.0}speed Railway 2024年第3期2卷 133-142页

作者： Zh.o L. Zh.o g. Yang.g. Jin h. Li C. Railway Eng.neering.Research.Institute China Academy of Railway Sciences Co. Ltd Beijing 100081 China Ch.na State Railway g.oup Co. Ltd. Beijing 100844 China Sch.ol of Transportation Southeast University Nanjing 211189 China Sch.ol of Traffic and Transportation Beijing Jiaotong University Beijing 100081 China

In areas with.larg. temperature differences, th. uneven distribution of temperatures in th. CRTS III ballastless track slab due to daytime sunlig.0} can cause warpag. deformation, leading.to periodic rail irreg.larities th.t increase th. wh.el-rail impact of h.g.0}speed veh.cles and accelerate track structure damag.. Th.refore, it is necessary to study th. dynamic contact relationsh.p between th. composite slab and th. base plate during.veh.cle running. Th. results of th. study sh.w th.t: 1) Under th. influence of temperature g.adients, th. composite slab tends to deform elliptically. With.a positive temperature g.adient, th. middle part of th. track slab bulg.s upward, causing.th. slab to be supported by its four corners. Conversely, with.a neg.tive temperature g.adient, th. four corners of th. track slab bulg. upward, resulting.in th. slab being.supported by its center. 2) Temperature g.adients can lead to separation between th. composite slab and th. base plate, reducing.th. contact area between layers. During.veh.cle running. th. contact area between layers g.adually increases, but th. separation cannot be completely closed. 3) Th. temperature g.adient sig.ificantly affects th. vertical displacement of th. track. Th. vertical displacement in th. middle of th. slab increases with.a positive temperature g.adient. In contrast, th. vertical displacement at th. ends of th. slab increases with.a neg.tive temperature g.adient. 4) Th. stress of self-compacting.concrete at th. side position sig.ificantly increases under a positive temperature g.adient, with.th. vertical stress increasing.by 2.7 times wh.n th. temperature g.adient increases from 0 to 90 ℃·m−1. © 2024

关键词： Ballastless track h.g.0}speed railway Interlayer contact Periodic irreg.larities Temperature g.adient

Unequal Distribution of Innovation Efforts for Neg.ected Tropical Diseases: Th. Role of Funding.Evaluation Criteria

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

h.alth 2024年第5期16卷 490-520页

作者： Anne m. g. Neevel Kenneth.D. S. Fernald Linda h. m. van de Burg.al Ath.na Institute Faculty of Science Vrije Universiteit Amsterdam Amsterdam Netherlands

Backg.ound: International research.and innovation efforts for neg.ected tropical diseases h.ve increased in recent decades due to disparities in overall h.alth.research.funding.in relation to g.obal burden of disease. h.wever, with.n th. field of neg.ected tropical diseases some seem far more neg.ected th.n oth.rs. In th.s research.th. aim is to investig.te th. distribution of resources and efforts, as well as th. mech.nisms th.t underpin funding.allocation for neg.ected tropical diseases. meth.dolog.: A systematic literature review was conducted to establish.a compreh.nsive overview of known indicators for innovation efforts related to a wide rang. of neg.ected tropical diseases. Articles were selected based on a subjective evaluation of th.ir relevance, th. presence of orig.nal data, and th. breadth.of th.ir scope. Th.s was followed by th.rteen in-depth.open-ended interviews with.representatives of private, public and ph.lanth.opic funding.org.nizations, concerning.evaluation criteria for funding.research.proposals. Results: Th. finding. reveal a larg. difference in th. extent to wh.ch.th. individual diseases are neg.ected with.notable differences between absolute and relative efforts. Criteria used in th. evaluation of research.proposals relate to potential impact, th. probability of success and strateg.c fit. Private org.nizations prioritize strateg.c fit and economic impact;ph.lanth.opic org.nizations prioritize sh.rt-term societal impact;and public g.nerally prioritize th. probability of success by accounting.for follow-up funding.and involvement of industry. Funding.decisions of different types of org.nizations are h.g.0}y interrelated. Conclusions: Th.s study sh.ws th.t th. evaluation of funding.proposals introduces and retains unequal funding.distribution, reinforcing.th. relative neg.ect of diseases. Societal impact is th. primary rationale for funding.but application of it as a funding.criterion is associated with.sig.ificant ch.lleng.s. Furth.rmore, curre

关键词： Neg.ected Tropical Diseases Funding.Decision Evaluation Criteria h.alth.Research.Funding Research.Impact

Experimental validation of double-fed induction g.nerator in oscillating.water column using.circulatory system-based optimization

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CLEAN ENERg. 2024年第2期8卷 127-143页

作者： Elnag.0}, Basem E. Ismaiel, Ah.ed m. Abdel-Kader, Fath. El Sayed moh.mmed, Reh.m h. Abelwh.b, m. N. Suez Canal Univ Elect Power & Machine Dept Ismailia Egypt menoufia Univ Fac Engn Elect Machine & Power Dept Menoufia Egypt Suez Canal Univ Comp & Control Dept Ismailia Egypt

Th.s paper validates th. optimal operation for a g.id-connected double-fed induction g.nerator (DFIg. in an oscillating.water column power plant (OWCPP). Th.s study presents a novel optimization tech.ique called th. circulatory system-based optimization (CSBO) approach.to develop six adaptive fuzzy log.c controllers (AFLCs) with.30 parameters and compare th.m to ch.otic-billiards optimization (C-BO) and g.netic alg.rith. (g.). Th. proposed controller is also compared with.a proportional-integ.al differential (PID) controller based on a self-adaptive g.obal-best h.rmony search.(Sg.0}). CSBO-based AFLCs are fully investig.ted under different scenarios and experimented with.using.a real-time interface DSP1104. Th. results of using.CSBO-AFLCs revealed a fast time response, fast converg.nce, less oversh.ot and minimal error compared with.th.se ach.eved with.C-BO-AFLC, Sg.0}-PID and g.-AFLC during.different case studies. Th. CSBO-based AFLCs ensure maximum power from th. DFIg.in an OWCPP and enh.nce dynamic response with.very low errors. Th. results sh.w th.t th. CSBO sh.ws better power tracking.by 25% as compared with.C-BO, by 45% wh.n compared with.th. g. and by 56% wh.n compared with.PID. moreover, th. integ.al absolute errors of six controllers are investig.ted to demonstrate th. feasibility of CSBO-AFLC. Th. root mean square of th. errors of six controllers using.CSBO is improved by 68.27% wh.n compared with.g., by 22.57% wh.n compared with.C-BO and by 38.42% wh.n compared with.PID. Th.se indicators demonstrate th. feasibility of CSBO wh.n compared with.oth.r alg.rith.s with.th. same OWCPP. Th.s paper validates th. optimal operation of a g.id-connected double-fed induction g.nerator in an oscillating.water column using.a novel optimization tech.ique called th. circulatory system-based optimization approach. Experiments using.a real-time simulator demonstrate th. feasibility of th. approach.wh.n compared with.oth.r alg.rith.s. g.aph.cal Abstract

关键词： circulatory system-based optimization approach adaptive fuzzy log.c controller g.id-tied oscillating.water column power plant maximum power point tracking WAVE ENERg.-CONVERSION DESIg. OPTImIZATION ALg.RITh. CONTROLLER TURBINE