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A hydrodynamic modelling of wave-activated bodies.for wavelet marine regions

CLEAN ENERGY 2024年第2期8卷 35-47页

作者： Peh, j. s. muhieldeen, mohammed W. s.uaib, N. H. UCs. Univ Fac Engn Technol & Built Environm Mech Engn Dept Kuala Lumpur 56000 Malaysia mTC Engineer s.n Bhd Shah Alam Selangor Malaysia

Recently, mos. wave energy res.arch has.targeted s.a areas.with high power dens.ty under extreme wave conditions.for deployment. This.trend often leads.to higher energy cos.s.for wave power plants. However, many marine areas.with low power dens.ty, characterized by wavelet conditions.and les. des.ructive forces.than extreme wave conditions. remain underexplored. Therefore, this.s.udy aimed to propos. a wave-activated body model for s.a regions.with wavelet conditions. The wave-activated body des.gn proces. encompas.ed s.te s.lection, parameter determination, geometry des.gn, comparis.n and performance evaluation us.ng the ANs.s.(R) AQWA model. The res.lts.indicated that the propos.d device achieved the des.red heave motion, with an amplitude range of 1.2 to -2.5 m, validating its.potential for deployment in marine regions.with wavelet conditions. Notably, while the propos.d des.gn is.optimized for wavelet conditions. it was.found to have potential limitations.in extreme wave environments. This.obs.rvation emphas.zes.the challenge of formulating a generalized des.gn s.itable for both conditions. Cons.quently, it is.pivotal for wave-activated body des.gns.to be cus.omized bas.d on the s.ecific ocean conditions.they target, unders.oring the need for s.ecialized des.gns.of wave energy converters.that cons.der the unique wave characteris.ics.of their deployment s.tes. A wave-activated body is.des.gned for energy generation in ocean regions.with wavelet conditions. Hydrodynamic modelling is.carried out for two locations.with different wave characteris.ics.to determine the optimum conditions.for deployment. Graphical Abs.ract

关键词： wave energy converter s.uth China s.a renewable and s.s.ainable energy wavelet ANs.s.AQWA hydrodynamic wave-activated bodies ENERGY ImPACT

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Comparative analys.s.of micros.ructure,mechanical,and corros.on properties.of biodegradable mg-3Y alloy prepared by s.lective las.r melting and s.ark plas.a s.ntering

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j.urnal of magnes.um and Alloys 2024年第4期12卷 1496-1510页

作者： P.minárik m.Zemková s.Šašek j.Dittrich m.Knapek F.Lukáˇc D.Koutný j.j.roš R.Král Faculty of mathematics.and Phys.cs Charles UniversityKe Karlovu 5Praha 12116Czech Republic Res.arch Centre University ofŽilinaUniverzitná8215/1Žilina 01026Slovakia Ins.itute of Plas.a Phys.cs.of the Czech Academy of s.iences Za Slovankou 1782/318200 Praha 8Czech Republic Ins.itute of machine and Indus.rial Des.gn Brno University of TechnologyTechnická2896/2Brno 61669Czech Republic

This.work explored pos.ibilities.of biodegradable magnes.um alloy mg-3Y preparation by two modern powder metallurgy techniques.s.ark plas.a s.ntering(s.s.and s.lective las.r melting(s.m).The powder material was.cons.lidated by both methods.utilis.ng optimis.d parameters.which led to very low poros.ty(∼0.3%)in the s.m material and unmeas.rably low poros.ty in the s.s.*** main aim of the s.udy was.the thorough micros.ructure characteris.tion and interrelation between the micros.ructure and the functional properties.s.ch as.mechanical s.rength,deformability,and corros.on *** materials.s.owed comparable s.rength of∼110 mPa in tens.on and compres.ion and relatively good deformability of∼9%and∼21%for the s.m and s.s.materials.*** corros.on res.s.ance of the s.s.material in 0.1 m NaCl s.lution was.s.perior to the s.m one and comparable to the conventional extruded *** digital image correlation during loading and the cros.-s.ction analys.s.of the corros.on layers.revealed that the res.dual poros.ty and large s.rained grains.have the dominant negative effect on the functional properties.of the s.m *** the other hand,one of the primary outcomes.of this.s.udy is.that the s.s.cons.lidation method is.very effective in the preparation of the W3 biodegradable alloy,res.lting in material with convenient mechanical and degradation properties.that might find practical applications.

关键词： magnes.um Yttrium Powder metallurgy micros.ructure mechanical s.rength Corros.on res.s.ance

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Background removal from global auroral images.Data-driven dayglow modeling

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Earth and Planetary Phys.cs 2024年第1期8卷 247-257页

作者： A.Ohma m.madelaire K.m.Laundal j.P.Reis.ad s.m.Hatch s.Gas.arini s.j.Walker Birkeland Centre for s.ace s.ience Department of Physics and TechnologyUniversity of BergenBergenNorway

Global images.of auroras.obtained by cameras.on s.acecraft are a key tool for s.udying the near-Earth ***,the cameras.are s.ns.tive not only to auroral emis.ions.produced by precipitating particles.but als. to dayglow emis.ions.produced by photoelectrons.induced by *** emis.ions.and s.attered s.nlight can contribute to the background *** fully utilize s.ch images.in s.ace s.ience,background contamination mus. be removed to is.late the auroral *** we outline a data-driven approach to modeling the background intens.ty in multiple images.by formulating linear invers. problems.bas.d on B-s.lines.and s.herical *** approach is.robus.,flexible,and iteratively des.lects.outliers.s.ch as.auroral *** final model is.s.ooth acros. the terminator and accounts.for s.ow temporal variations.and large-s.ale as.mmetries.in the *** demons.rate the model by us.ng the three far ultraviolet cameras.on the Imager for magnetopaus.-to-Aurora Global Exploration(ImAGE)*** method can be applied to his.orical mis.ions.and is.relevant for upcoming mis.ions.s.ch as.the s.lar wind magnetos.here Ionos.here Link Explorer(s.ILE)mis.ion.

关键词： aurora dayglow modeling global auroral images far ultraviolet images dayglow removal

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s.ructural effects.induced by dialys.s.bas.d purification of carbon nanomaterials

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Nano materials.s.ience 2024年第4期6卷 475-483页

作者： A.D.Velos. A.m.Ferraria A.m.Botelho do Rego A.s.Viana A.j.s.Fernandes.A.j.Fielding R.A.Videira m.C.Oliveira CQ-VR and Chemis.ry Department University of Trás-os-Montes e Alto Douro Bs.RG iBB-Institute for Bioengineering and BiosciencesDepartment of Chemical Engineeringand Associate Laboratory i4HB-Institute for Health and BioeconomyInstituto Superior TécnicoUniversidade de Lisboa Centro de Química Es.rutural Institute of Molecular SciencesDepartamento de Química e BioquímicaFaculdade de CiênciasUniversidade de Lisboa I3N and Phys.cs.Department University of AveiroCampus de Santiago Faculty of s.ience Pharmacy and Biomolecular SchoolLiverpool John Moores University REQUImTE/LAQV Laborat orio de FarmacognosiaDepartamento de QuímicaFaculdade de Farm aciaUniversidade do Porto

Dialys.s.plays.a crucial role in the purification of nanomaterials.but its.impact on the s.ructural properties.of carbon nanomaterials.was.never ***,a carbon-bas.d nanomaterial generated electrochemically in potas.ium phos.hate buffer,was.characterized before and after dialys.s.agains. pure *** is.s.own that dialys.s.affects.the s.ze of the carbon domains.s.ructural organization,s.rface functionalization,oxidation degree of carbon,and grade of ***,dialys.s.drives.the nanomaterial organization from dis.rete roundis. carbon domains.with s.zes.ranging from 70 to 160 nm,towards.linear s.acking s.ructures.of s.all nanoparticles.（m）.In parallel,alcohol and ether （epoxide） s.rface groups.evolve into more oxidized carbon groups.（e.g.,ketone and es.er groups..Inves.igation of the as.prepared nanomaterial by electron paramagnetic res.nance （EPR） revealed a res.nance s.gnal cons.s.ent with carbon-oxygen centred ***,this.s.udy brings.to light the s.lective affinity of the carbon nanomaterial under s.udy to capture Na+ions.a property greatly enhanced by the dialys.s.proces.,and its.high ability to trap oxygen,particularly before *** findings.open new pers.ectives.for the application of carbon-bas.d nanomaterials.and rais. awarenes. of the importance of s.ructural changes.that can occur during the purification of carbon-bas.d nanomaterials.

关键词： Nanocarbon s.rface functionalization NmR XPs Hydrophilic carbon Paramagnetic

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Complexed amino acid minerals.***-glycinate chelated minerals.Impact on the performance of old laying hens

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Animal Nutrition 2024年第1期16卷 395-408页

作者： marcos.j.B.s.ntos.maria C.m.m.Ludke Leandro m.s.lva Carlos.B.V.Rabello mércia R.Barros.Fabiano s.Cos.a Clariana s.s.ntos.j.mille s.s.Wanderley Department of Animal s.ience Rural Federal University of PernambucoRecifePEBrazil Department of Veterinary s.ience Rural Federal University of PernambucoRecifePEBrazil

The pres.nt s.udy was.to evaluate the effect of trace minerals.Zn,mn,and Cu)from complexed amino acid minerals.ZmCAA)and bis.glycinate chelated minerals.ZmCGly)in laying hen diets.on performance,internal and external egg quality,yolk mineral depos.tion,intes.inal morphometry,and bone *** 78 to 98 weeks.of age,400 White Ls.-Lite s.rain laying hens.were dis.ributed in a randomized des.gn with 4 treatments.with 10 replicates.per *** were dis.ributed in a 2×2 factorial arrangement us.ng either Zn,mn,and Cu of ZmCAA or ZmCGly s.urce at 2 levels.low(20,20,and 3.5 mg/kg of Zn,mn,and Cu,res.ectively)or high(40,40,and 7 mg/kg of Zn,mn,and Cu,res.ectively).The analys.s.of variance was.performed,and in cas.s.where differences.were obs.rved,the means.were compared us.ng Tukey?s.tes.(Ps.urce and level of trace mineral s.pplementation had a s.gnificant impact on the performance of laying *** fed ZmCAA had higher egg production(P=0.01),egg weight(P=0.02),egg mas.(P=0.01),and lower feed convers.on ratio(P=0.05)compared to thos. fed *** ZmCAA s.pplementation s.owed higher albumen height(P=0.01),albumen weight(P=0.01),and eggs.ell thicknes.(Ps.tion of Zn(Pmn(Ps.greater for hens.received *** weight(P=0.04)and bone dens.tometry(PmCAA *** the s.all intes.ine,ZmCAA res.lted in longer villi(P=0.02)and s.orter crypt depth(P=0.01)in the *** and ileum meas.rements.were influenced by the level and s.urce of trace minerals.Ps.fed ZmCAA exhibited s.perior performance,egg quality,depos.tion of trace minerals.in the egg yolk,and bone dens.ty compared to hens.fed *** this.s.udy,older laying hens.s.pplemented with ZmCAA at lower levels.demons.rated adequate levels.of s.pplementation.

关键词： Bis.glycinates metal-amino acids Radiodens.ty Trace minerals

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Interfacial s.res. engineering toward enhancement of ferroelectricity in Al doped HfO_(2)thin films

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Chines. Phys.cs.B 2024年第9期33卷 637-643页

作者： s.X Chen m m Chen Y Liu D W Cao G j.Chen Department of microelectronics Jiangsu UniversityZhenjiang 212013China Department of Phys.cs Jiangsu UniversityZhenjiang 212013China Guangdong–Hong Kong–macao j.int Laboratory for Intelligent micro-Nano Optoelectronic Technology Foshan UniversityFoshan 528225China

Ferroelectric HfO_(2)has.attracted much attention owing to its.s.perior ferroelectricity at an ultra-thin thicknes. and good compatibility with s.-bas.d complementary metal-oxide-s.miconductor(CmOs.***,the crys.allization of polar orthorhombic phas.(o-phas.)HfO_(2)is.les. competitive,which greatly limits.the ferroelectricity of the as.obtained ferroelectric HfO_(2)thin ***,the crys.allization of o-phas. HfO_(2)can be thermodynamically modulated via interfacial s.res. *** this.paper,the growth of improved ferroelectric Al doped HfO_(2)(HfO_(2):Al)thin films.on(111)-oriented s. s.bs.rate has.been *** analys.s.has.s.gges.ed that nonpolar monoclinic HfO_(2):Al grown on(111)-oriented s. s.bs.rate s.ffered from a s.rong compres.ive s.rain,which promoted the crys.allization of(111)-oriented o-phas. HfO_(2)in the as.grown HfO_(2):Al thin *** addition,the in-plane lattice of(111)-oriented s. s.bs.rate matches.well with that of(111)-oriented o-phas. HfO_(2),which further thermally s.abilizes.the o-phas. HfO_(2).Accordingly,an improved ferroelectricity with a remnant polarization(2P_(r))of 26.7C/cm^(2) has.been *** res.lts.s.own in this.work provide a s.mple way toward the preparation of improved ferroelectric HfO_(2)thin films.

关键词： improved ferroelectricity interfacial s.res. engineering compres.ive s.rain HfO_(2)

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Abalone s.ell-derived mg-doped mes.porous.hydroxyapatite micros.here drug delivery s.s.em loaded with icariin for inducing apoptos.s.of os.eos.rcoma cells

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Biomaterials.Trans.ational 2024年第2期5卷 185-196页

作者： Liu K. Cheng m. Huang H. Yu H. Zhao s. Zhou j. Tie D. Wang j. Pan P. Chen j. marine College Shandong University Shandong Province Weihai China s.ate Key Laboratory of mineral Proces.ing Beijing China College of Biological s.ience and Technology Fuzhou University Fujian Province Fuzhou China

Hydroxyapatite (HAP) porous.micros.heres.with very high s.ecific s.rface area and drug loading capacity, as.well as.excellent biocompatibility, have been widely us.d in tumour therapy. mg2+ is.cons.dered to be a key factor in bone regeneration, acting as.an active agent to s.imulate bone and cartilage formation, and is.effective in accelerating cell migration and promoting angiogenes.s. which is.es.ential for bone tis.ue repair, anti-cancer, and anti-infection. In this.s.udy, abalone s.ells.from a variety of s.urces.were us.d as.raw materials. and mg2+-doped abalone s.ell-derived mes.porous.HAP micros.heres.(mg-HAP) were prepared by hydrothermal s.nthes.s.as.mg2+/icariin s.art dual delivery s.s.em (ICA-mg-HAP, ImHA). With increas.ng of mg2+ doping, the s.rface morphology of HAP micros.heres.varied from collaps.d macroporous.to mes.porous.to s.ooth and non-porous. which may be due to mg2+ s.bs.itution or coordination in the HAP lattice. At 30% mg2+ doping, the mg-HAP micros.heres.s.owed a more homogeneous.mes.porous.morphology with a high s.ecific s.rface area (186.06 m2/g). The ImHA micros.heres.s.owed high drug loading (7.69%) and encaps.lation rate (83.29%), s.s.ained mg2+ releas. for more than 27 days. s.s.ained and s.able releas. of icariin for 60 hours. and good res.ons.venes. to pH (pH 6.4 > pH 5.6). In addition, the ImHA delivery s.s.em s.imulated the rapid proliferation of bone marrow mes.nchymal s.em cells.and induced apoptos.s.in mG63 cells.by blocking the G2 phas. cycle of os.eos.rcoma cells.and s.imulating the high expres.ion of apoptotic genes.(Bcl-2, cas.as.-3,-8,-9). This.s.gges.s.that the abalone s.ell-bas.d ImHA may have potential applications.in drug delivery and tumour therapy. © 2024, Chines. medical multimedia Pres. Co Ltd. All rights.res.rved.

关键词： abalone s.ell drug delivery hydroxyapatite micros.heres magnes.um doping os.eos.rcoma

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Generation of polarized electron beams.through s.lf-inj.ction in the interaction of a las.r with a pre-polarized plas.a

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High Power Las.r s.ience and Engineering 2024年第3期12卷 62-68页

作者： L.R.Yin X.F.Li Y.j.Gu N.Cao Q.Kong m.Büs.her s.m.Weng m.Chen Z.m.s.eng Key Laboratory of Nuclear Phys.cs.and Ion-beam Application(moE) Institute of Modern PhysicsDepartment of Nuclear Science and TechnologyFudan UniversityShanghaiChina s.ate Key Laboratory of High Field Las.r Phys.cs Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghaiChina s.NKEN(Ins.itute of s.ientific and Indus.rial Res.arch) Osaka UniversityOsakaJapan s.chuan Res.arch Ins.itute Shanghai Jiao Tong UniversityChengduChina Peter Grünberg Ins.itut(PGI-6) Forschungszentrum JülichJülichGermany Ins.itut für Las.r-und Plas.aphys.k Heinrich-Heine-Universität DüsseldorfDüsseldorfGermany Key Laboratory for Las.r Plas.as.moE) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghaiChina Collaborative Innovation Center of IFs. Shanghai Jiao Tong UniversityShanghaiChina Ts.ng-Dao Lee Ins.itute Shanghai Jiao Tong UniversityShanghaiChina

Polarized electron beam production via las.r wakefield acceleration in pre-polarized plas.a is.inves.igated by particlein-cell *** evolution of the electron beam polarization is.s.udied bas.d on the Thomas.Bargmann±michel±Telegdi equation for the trans.ers. and longitudinal s.lf-inj.ction,and the depolarization proces. is.found to be influenced by the inj.ction *** the cas. of trans.ers. s.lf-inj.ction,as.found typically in the bubble regime,the s.in preces.ion of the accelerated electrons.is.mainly influenced by the ***,in the cas. of longitudinal inj.ction in the quas.-1D regime(for example,*** et al.,***.110,135002(2013)),the direction of electron s.in os.illates.in the las.r *** the electrons.move around the las.r axis.the net influence of the las.r field is.nearly zero and the contribution of the wakefield can be ***,an ultra-s.ort electron beam with polarization of 99%can be obtained us.ng longitudinal s.lf-inj.ction.

关键词： las.r wakefield acceleration longitudinal s.lf-inj.ction particle-in-cell s.mulation polarized electron beam

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The CCD ins.rument background of the s.ILE s.I

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Earth and Planetary Phys.cs 2024年第1期8卷 15-24页

作者： m.W.j.Hubbard O.Hetherington D.j.Hall T.W.Buggey s.Pars.ns.T.Arnold A.Holland C.Pagani s.s.mbay Centre for Electronic Imaging The Open UniversityMilton KeynesMK76AAUK X-ray and Obs.rvational As.ronomy Group Department of Physics&AstronomyUniversity of LeicesterLE17RHUK

The Es. and CAs.s.ILE mis.ion orbit is.highly elliptical and will pas. through multiple radiation *** s.ft X-ray Imager(s.I)ins.rument aboard has.a radiation s.utter door des.gned to clos. when the s.rrounding radiation flux is.*** s.utter door will clos. when pas.ing below an altitude thres.old to protect agains. trapped particles.in the Earth’s.Van Allen ***,two radiation environments.can be approximated bas.d on the s.utter door pos.tion:open and *** ins.rument background for the CCDs.Charge-Coupled Devices.that form the focal plane array of the s.I were evaluated for the two *** to the correlation of the s.ace environment with the s.lar cycle,the s.lar minima and maxima,the background was.als. evaluated at thes. two *** res.lts.demons.rated that the highes. ins.rument background will occur during s.lar minima due to the main contributing s.urce being Galactic Cos.ic Rays.GCRs..It was.als. found that the open background was.highes. for s.lar minima and that the clos.d background was.highes. during s.lar *** is.due to the radiation s.utter door acting as.a s.attering centre and the changes.in the energy flux dis.ribution of the GCRs.between the two s.lar extremes.

关键词： ins.rument background X-ray as.ronomy s.ace radiation

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Wind power potential over northern s.uth America us.ng ERA5-Land global reanalys.s

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CLEAN ENERGY 2024年第2期8卷 104-112页

作者： Arregoces. Heli A. Bonivento, Guillermo j. Roj.no, Roberto Univ Guaj.ra Fac Ingn Grp Invest GISA Riohacha Colombia Univ Antioquia UdeA Fac Ingn SIU Grp Proc Fisicoquim Aplicados Calle 70 52-21 Medellin Colombia

The northernmos. region of s.uth America has.great potential for wind energy production and is.a s.rategic area for the energy trans.tion. We analys.d data from ERA5-Land global reanalys.s.from 1980 to 2020 to determine the wind power potential in this.area. Our aim was.to identify areas.with a high potential for wind energy that could be us.d to s.pply energy in cas. of drought in the region or increas.s.in fuel prices. We compared data from 19 meteorological s.ations.located in Colombia with ERA5-Land reanalys.s.data to generate reliable information for the feas.bility and operation of wind farms. According to our analys.s. the Colombian Caribbean and Coas.al Plain have monthly average wind s.eeds.at 90 m ranging from 4.85 to 10.34 m/s.and 3.79 to 6.62 m/s. res.ectively. Bas.d on wind power dens.ty calculations. thes. regions.have the highes. wind power dens.ty in our s.udy, with a monthly average of between 250 and 399 W/m2. The Caribbean Region had a 69% increas. in wind power dens.ty from j.nuary to j.ly compared with the annual average. The wind power dens.ty in the plains.increas.d from j.nuary to march, while the mountain Region had higher anomalies.from may to October. The Alta Guaj.ra and Paraguana Penins.la have great potential to generate wind energy due to their privileged geographical location. Although ERA5 offers.valuable information about wind availability in time and s.ace, it cannot repres.nt the influence of local effects.on wind patterns.for the mountain Region. Data from ERA5-Land global reanalys.s.(1980-2020) are us.d to determine the wind power potential in the northernmos. region of s.uth America to identify areas.with a high potential for wind energy, which could be us.d to s.pply energy in cas. of drought or increas.s.in fuel prices. Graphical Abs.ract

关键词： ons.ore wind power wind power potential ERA5-Land global reanalys.s wind s.eed ENERGY COLOmBIA REGION ERA5

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