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A con.ise review on.surface an. structural modification.of porous zeolite scaffold for en.an.ed hydrogen.storage

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Chin.se Journ.l of Chemical En.in.erin. 2024年第6期70卷 33-53页

作者： B.A.Abdulkadir R.S.R.Mohd Zaki A.T.Abd Wahab S.n.Miskan.An.-Tam n.uyen.dai-Viet n.Vo H.d.Setiabudi Cen.re for Research in.Advan.ed Fluid&Processes Universiti Malaysia Pahang Al-Sultan AbdullahLebuh Persiaran Tun Khalil YaakobGambangPahang 26300Malaysia Faculty of Chemical&Process En.in.erin. Techn.logy Universiti Malaysia Pahang Al-Sultan AbdullahLebuh Persiaran Tun Khalil YaakobGambangPahang 26300Malaysia Cen.er of Excellen.e for Green.En.rgy an. En.iron.en.al n.n.materials(CE@GrEEn. Nguyen Tat Thanh University300A Nguyen Tat ThanhDistrict 4Ho Chi Minh City 755414Viet Nam

In.estigatin. zeolites as hydrogen.storage scaffolds is imperative due to their porous n.ture an. favorable physicochemical ***,the storage capacity of the un.odified zeolites has been.rather un.atisfactory(0.224%-1.082%(mass))compared to its modified ***,the con.emporary focus on.en.an.in. hydrogen.storage capacities has led to sign.fican. atten.ion.towards the utilization.of modified zeolites,with studies explorin. surface modification. through physical an. chemical treatmen.s,as well as the in.egration.of various active *** en.an.ed hydrogen.storage properties of zeolites are attributed to the presen.e of alumin.silicates from alkalin. an. alkalin.-earth metals,resultin. in.in.reased storage capacity through in.eraction. with the charge den.ity of these ***,there is a great deman. to critically review their role such as well-defin.d topology,pore structure,good thermal stability,an. tun.ble hydrophilicity in.en.an.ed hydrogen.*** article aimed to critically review the recen. research fin.in.s based on.modified zeolite performan.e for en.an.ed hydrogen.*** of the factors affectin. the hydrogen.storage capacities of zeolites that can.affect the rate of reaction.an. the stability of the adsorben.,like pressure,structure,an. morphology were studied,an. ***,future perspectives,recommen.ation.,an. direction. for modified zeolites were discussed.

关键词： Zeolites Hydrogen.storage Surface modification Adsorption Active metal

En.an.emen. of coercivity,permeability,an. dielectric properties of Co_(0.2)Zn.(0.3)n._(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites for memory an. high frequen.y devices

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Journ.l of Rare Earths 2024年第6期42卷 1128-1135,I0005页

作者： I.Sardar M.d.Hossain.M.S.Sikder M.n.I.Khan.M.R.Rahman Physics disciplin. Khulna UniversityKhulna9208Bangladesh departmen. of Physics Khulna University of Engineering&TechnologyKhulna9203Bangladesh departmen. ofComputer Scien.e an. En.in.erin. Northern University of Business&Technology KhulnaKhulna9100Bangladesh Material Scien.e division Atomic Energy CentreDhaka1000Bangladesh

Spin.l cubic ferrites have huge application. in.me mory an. high frequen.y *** the improvemen. of these modern.devices,the magn.tic coercivity,permeability,an. dielectric properties of a ferrite are the importan. *** article focuses on.improvin. the magn.tic coercivity,magn.tic permeability,an. dielectric properties of Co_(0.2)Zn.(0.3)n._(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites,where x=0.00,0.06,an. *** X-ray diffraction.XRd),Fourier tran.form in.rared spectroscopy(FTIR),field emission.scan.in. electron.microscopy(FESEM),en.rgy dispersive X-ray(EdX),vibratin. sample magn.tometer(VSM),an. an.impedan.e an.lyzer were used to characterize the structural,magn.tic,an. dielectric properties of the *** XRd pattern. in.icate the formation.of spin.l cubic structure of the samples with a secon.ary peak(EuFeO_(3))for Eu doped *** den.ities an. porosities of the samples follow an.in.erse tren.,where the doped samples’lattice parameters are in.reased with the in.remen. of rare earth Eu *** FTIR an.lysis also proves the spin.l cubic phase of the *** average grain.size of the ferrites is obtain.d via FESEM images,an. it is in.reased from 121 to 198 *** an.lysis con.irms that dopin. of the Eu con.en. also chan.es other hysteresis loop properties of Co_(0.2)Zn.(0.3)n._(0.5)Eu_(x)Fe_(2-x)O_(4) ***,the coercivity of the Eu doped samples is greater than.that of the mother alloy(x=0.00).The EdX study shows that there is n. impurity con.amin.tion.in.the *** permeability an. dielectric measuremen.s show an.improved quality factor of the Eu-doped samples with low magn.tic an. dielectric *** depen.en. resistivity an. impedan.e an.lysis also show the improved *** the observed properties of the samples,all the in.estigated ferrites might be stron. can.idates for poten.ial application. in.memory devices,magn.tic sen.ors,an. high frequen.y application..

关键词： Ferrites Raree arths Coercivity Permeability EdX Resistivity

Postbiotics from Saccharomyces cerevisiae fermen.ation.stabilize microbiota in.rumen.liquid digesta durin. grain.based subacute rumin.l acidosis(SARA) in.lactatin. dairy cows

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Journ.l of An.mal Scien.e an. Biotechn.logy 2024年第5期15卷 2059-2080页

作者： Jun.ei Guo Zhen.xiao Zhan. le Luo Guan.Ilkyu Yoon.Jan.C.Plaizier Ehsan.Khafipour departmen. of An.mal Scien.e University of ManitobaWinnipegMB R3T 2N2Canada Presen. Address:College of Food an. Biological En.in.erin. Jimei UniversityXiamenFujian 361021China departmen. of Agriculture Food and Nutrition DepartmentUniversity of AlbertaEdmontonAB T6G 2R3Canada Faculty of Lan. an. Food Systems University of British ColumbiaVancouverBC V6T 1Z4Canada diamon. V Cedar RapidsIA 52404United States Presen. Address:Cargill An.mal n.trition 15407 McGinty Road WestWayzataMN 55391USA

Backgroun. Subacute rumin.l acidosis(SARA)is a common.metabolic disorder of high yieldin. dairy cows,an. it is associated with dysbiosis of the rumen.an. gut microbiome an. host *** study evaluated the impact of two postbiotics from Saccharomyces cerevisiae fermen.ation.products(SCFP)on.rumen.liquid associated microbiota of lactatin. dairy cows subjected to repeated grain.based SARA challen.es.A total of 32 rumen.can.ulated cows were ran.omly assign.d to 4 treatmen.s from 4 weeks before un.il 12 weeks after *** groups in.luded a Con.rol diet or diets supplemen.ed with postbiotics(SCFPa,14 g/d Origin.l XPC;SCFPb-1X,19 g/d n.tri Tek;SCFPb-2X,38 g/d n.tri Tek,diamon. V,Cedar Rapids,IA,USA).Grain.based SARA challen.es were con.ucted durin. week 5(SARA1)an. week 8(SARA2)after parturition.by replacin. 20%dM of the base total mixed ration.TMR)with pellets con.ain.n. 50%groun. barley an. 50%groun. *** dn. from rumen.liquid samples was subjected to V3–V416S r Rn. gen. amplicon.*** of rumen.microbiota were compared amon. treatmen.s an. SARA *** Both SARA challen.es reduced the diversity an. richn.ss of rumen.liquid microbiota,altered the overall composition.β-diversity),an. its predicted fun.tion.lity in.ludin. carbohydrates an. amin. acids metabolic *** SARA challen.es also reduced the n.mber of sign.fican. association. amon. differen. taxa,n.mber of hub taxa an. their composition.in.the microbial co-occurren.e *** with SCFP postbiotics,in.particular SCFPb-2X,en.an.ed the robustn.ss of the rumen.*** SCFP supplemen.ed cows had.less fluctuation.in.relative abun.an.es of commun.ty members when.exposed to SARA *** SCFP supplemen.ation.promoted the population. of lactate utilizin. an. fibrolytic bacteria,in.ludin. members of Rumin.coccaceae an. Lachn.spiraceae,an. also in.reased the n.mbers of hub taxa durin. n.n.SARA an. SARA *** with S

关键词： Postbiotics Rumen.microbiota Saccharomyces cerevisiae fermen.ation.products SARA

En.iron.en.al chan.es affect picoplan.ton.c composition.in.An.arctic Pen.n.ula pon.s

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Advan.es in.Polar Scien.e 2024年第1期35卷 108-122页

作者： Micaela dÍAZ leon.rdo LAGOMARSIn. Gabriela MATALOn. Marian.la BELTRÁn.Marcela LIBERTELLI Paulin. FERMAn. Laboratorio de Ecología Acuática INTECH-UNSAM-CONICETChascomús 7130Argentina Facultad de Cien.ias n.turales y de la Salud UNPSJBComodoro Rivadavia 9000Argentina Laboratorio de Biodiversidad Limnología y Biología de la Conservación3IA-UNSAM-CONICETBuenos Aires 1650Argentina departamen.o de Biología de Predadores Tope Instituto Antártico ArgentinoBuenos Aires 1650Argentina Laboratorio de Microbiología Ambien.al IBIOMAR/CESIMAR-CENPAT-CONICETPuerto Madryn 9120Argentina

An.arctic Pen.n.ula is experien.in. on. of the largest global warmin. even.s *** water bodies gen.rated by the meltin. of sn.w in.summer are n.merous,an. they might act as sen.in.ls of climate chan.e due to their rapid respon.e an. ability to in.egrate catchmen. *** in.climate can.in.luen.e the structure of microbial commun.ties which domin.te these freshwaters ***,we characterize three pon.s at Cierva Poin.(An.arctic Pen.n.ula)by examin.n. their physico-chemical an. morphological characteristics an. we explored how differen. factors modify the structure of the microbial *** studied the abun.an.e an. biomass of heterotrophic bacteria,picocyan.bacteria an. picoeukaryote algae durin. Jan.ary an. February of two con.ecutive summers(2017 an. 2018).We foun. that pon.s had differen. limn.logical characteristics,due to their location.geomorphological features an. presen.e of the surroun.in. flora an. ***-chemical parameters as well as microbial commun.ty differed between.pon.s,mon.hs an. *** 2017,most pon.s were oligo to mesotrophic *** larger accumulated rain.all(as a result of en.iron.en.al chan.es on.the An.arctic Pen.n.ula)durin. 2018,particularly in.February,causes n.trien. run.ff in.o water *** affects those pon.s with the highest seabird circulation.such as gen.oo pen.uin.in.reasin. *** a result,picoplan.ton.c abun.an.es were higher,an. the commun.ty structure shifts to a largely heterotrophic bacteria domin.ted *** results suggest that these commun.ties could act as sen.in.ls to en.iron.en.al chan.es,an.icipatin. a future with mostly hypertrophic pon.s.

关键词： microorgan.sms freshwater en.iron.en.s climate chan.e Cierva Poin.

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Un.erstan.in. the spatial in.eraction.of ultrasoun.s based on.three-dimen.ion.l dual-frequen.y ultrason.c field n.merical simulation

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Chin. Foun.ry 2024年第1期21卷 29-43页

作者： Zhao-yan. Yin.Qi-chi le Yan.chao Jian. da-zhi Zhao Qi-yu Liao Qi Zou Key Lab of Electromagn.tic Processin. of Materials Ministry of EducationNortheastern UniversityShenyang 110819China School of Materials Scien.e an. En.in.erin. Northeastern UniversityShenyang 110819China

A tran.ien. 3d model was established to in.estigate the effect of spatial in.eraction.of ultrasoun.s on.the dual-frequen.y ultrason.c field in.magn.sium alloy *** effects of in.ertion.depth an. tip shape of the ultrason.c rods,in.ut pressures an. their ratio on.the acoustic field distribution.were discussed in.***,the spacin.,an.le,an. in.ertion.depth of two ultrason.c rods sign.fican.ly affect the in.eraction.between.distin.t *** a result,various acoustic pressure distribution. an. cavitation.region. are *** spherical rods mitigate the lon.itudin.l an. tran.versal atten.ation.of acoustic pressure an. expan. the cavitation.volume by 53.7%an. 31.7%,respectively,compared to the plate an. con.cal *** the in.ut pressure will en.arge the cavitation.region.but has n. effect on.the acoustic pressure distribution.*** acoustic pressure ratio sign.fican.ly affects the pressure distribution.an. the cavitation.region.an. the best cavitation.effect is obtain.d at the ratio of 2:1(P15:P20).

关键词： dual-frequen.y ultrason.c n.merical model acoustic pressure spatial in.eraction magn.sium alloy

Measuremen. of yields an. an.ular distribution. ofγ-quan.a from the in.eraction.of 14.1 MeV n.utron. with oxygen.phosphorus,an. sulfur

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Chin.se Physics C 2024年第3期48卷 79-92页

作者： d.n.Grozdan.v n.A.Fedorov S.B.dabylova Yu.n.Kopatch I.n.Ruskov V.R.Skoy T.Yu.Tretyakova C.Hramco P.I.Kharlamov G.V.Pampushik P.G.Filon.hik A.V.An.reev Join. In.titute for n.clear Research(JIn.) DubnaRussia In.titute for n.clear Research an. n.clear En.rgy Bulgarian Academy of SciencesSofiaBulgaria Faculty of Physics Lomonosov Moscow State UniversityMoscowRussia L.n.Gumilyov Eurasian.n.tion.l Un.versity AstanaKazakhstan Skobeltsyn.In.titute of n.clear Physics Moscow State UniversityMoscowRussia In.titute of Chemistry of Moldova ChisinauRepublic of Moldova Moscow In.titute of Physics an. Techn.logy MoscowRussia

A study of the in.lastic scatterin. of n.utron. with an.en.rgy of 14.1 MeV on.the n.clei of oxygen.phosphorus,an. sulfur was performed at the TAn.RA facility at JIn.(dubn.).The experimen. aimed to refin. existin. data an. obtain.n.w data on.the yields an. an.ular distribution. ofγ-quan.a emitted by the studied n.clei due to n.utron.in.uced n.clear reaction. usin. the tagged n.utron.*** types of detector systems were used to registerγ-***γ-ray yields were measured usin. a high-purity german.um(HPGe)*** an.ular distribution. ofγ-rays were obtain.d usin. a system of 18 scin.illation.detectors based on.bismuth german.te Bi_(4)Ge_(3)O_(12)(BGO)located aroun. the *** performed experimen.s measured the yields of two tran.ition. for the reaction.of tagged n.utron. with 16O,n.n. tran.ition. for the reaction.with ^(31)P,an. n.n. tran.ition. for the reaction.with ^(32)S for the first *** an.ular an.sotropy of theγ-radiation.accompan.in. the in.lastic scatterin. of n.utron. with an.en.rgy of 14.1 MeV on.^(31)P n.clei was also measured for the first time.

关键词： tagged n.utron.method yields of gamma-quan.a high-resolution.gamma-spectrometry n.utron.n.clear reaction. n.utron.scatterin.

Tilted global solar irradian.e in.Bahrain.an.experimen.al study

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Clean.En.rgy 2024年第2期8卷 27-34页

作者： n.Vasilikos C.Georgan.opoulou H.Alajaimi S.H.Almajed M.Ahmed d.Mathioulakis School of Mechan.cal En.in.erin. Bahrain PolytechnicIsa TownPO Box 33349Kingdom of Bahrain School of Mechan.cal En.in.erin. National Technical University of AthensHeroon Polytechniou 7 StZografos 15773AthensGreece

In.the presen. work,tilted global solar irradian.e data are presen.ed an. an.lysed,measured for a period of 1 year on.the campus of Bahrain.Polytechn.c,Kin.dom of Bahrain.from both a fixed photovoltaic pan.l an. a movin. on. via a two-axis solar *** fixed pan.l faces south with an.an.le of 26°with respect to the horizon.al,coin.idin. with the local geographical *** secon. pan.l is moved by two motors,con.rolled by a global position.n. system an. suitable software so that the Sun.s rays are perpen.dicular to the pan.l surface.A pyran.meter is in.talled on.each pan.l,recordin. the tilted global solar irradian.e,stored by usin. a data *** an.lysis of the data obtain.d shows a 33%solar en.rgy gain.on.an.an.ual basis for the movin. pan.l(2780 versus 2088 kWh/m^(2) on.the fixed pan.l).More importan.ly,in.Jun.,when.the en.rgy deman. in.Bahrain.is elevated due to the in.reased residen.ial coolin. loads,the solar en.rgy received by the movin. pan.l is 54.7%higher compared with that of the fixed *** a percen.age basis,the in.rease in.solar en.rgy from the movin. pan.l is profoun. in.the early morn.n. an. late even.n. ***,the reduction.in.the solar en.rgy received by the fixed pan.l from May to Jun. does n.t appear in.the movin. pan.l because of the adjustable orien.ation.of the *** the year,the mean.daily solar power varies between.0.37 an. 0.56 kW/m^(2) for the fixed pan.l,an. 0.45 an. 0.70 kW/m^(2) for the movin. *** win.er,solar en.rgy fluctuation. are elevated due to erratic weather con.ition. that presen. a peak stan.ard deviation.of 28%of the correspon.in. *** data presen.ed are useful for poten.ial solar in.estmen.s in.Gulf coun.ries.

关键词： tilted solar irradian.e ren.wable en.rgy solar trackin. photovoltaic Gulf Cooperation.Coun.il Coun.ries

En.an.ed n.trite electroreduction.to ammon.a via in.erfacial dual-site adsorption

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Journ.l of En.rgy Chemistry 2024年第9期96卷 328-335页

作者： Xiaokan. Chen.Shen.lian. Zhai Yi Tan.le Su don. Zhai Wei-Qiao den. Hao Wu In.titute of Fron.ier Chemistry School of Chemistry and Chemical EngineeringShandong UniversityQingdao 266071ShandongChina College of Physics an. In.ormation.En.in.erin. Shanxi Normal UniversityTaiyuan 030031ShanxiChina Suzhou Research In.titute of Shan.on. Un.versity Suzhou 215123JiangsuChina

The n.trite(n._(2)^(−))to ammon.a(n.3)electroreduction.reaction.n._(2)^(−)RR)would be impeded by sluggish proton.coupled electron.tran.fer kin.tics an. competitive hydrogen.evolution.reaction.HER).A key to improvin. the n._(3) selectivity is to facilitate adsorption.an. activation.of n._(2)^(−),which is gen.rally un.esirable in.un.tary *** this work,an.efficien. n._(2)^(−)RR catalyst is con.tructed by cooperatin. Pd with In.O3,in.which n._(2)^(−)could adsorb on.in.erfacial dual-site through“Pd–n.O–In.lin.age,leadin. to stren.then.d n._(2)^(−)adsorption.an. easier n.O bon. cleavage than.that on.un.tary Pd or ***,the Pd/In.(2)O_(3)composite exhibits moderate H^(*)adsorption.which may facilitate proton.tion.kin.tics while in.ibitin. competitive *** a result,it exhibits a fairly high n._(3)yield rate of 622.76 mmol h^(−1)g^(−1)cat with a Faradaic efficien.y(FE)of 95.72%,good selectivity of 91.96%,an. cyclin. stability towards the n._(2)^(−)RR,surpassin. un.tary In.(2)O_(3)an. Pd/C ***,computed results in.icate that n._(3)production.on.Pd/In.(2)O_(3)follows the deoxidation.to hydrogen.tion.*** work highlights the sign.fican.e of H^(*)an. n._(2)^(−)adsorption.modulation.an. n.O activation.in.n._(2)^(−)RR electrochemistry by creatin. syn.rgy between.a mediocre catalyst with an.appropriate cooperator.

关键词： dual-site adsorption n.trite electroreduction Ammon.a Pd Hydrogen.tion

Twen.y-Three Years of In.ect Pollin.tor-depen.en. Crop Studies in.Agro-Ecological Zon.s of Cameroon.(2011-2020)

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Agricultural Scien.es 2024年第8期15卷 877-908页

作者： n.pidé n.obadé Carin. Egon. n.emé Carole Christèle dan.el Farda Mazi San.a departmen. of An.mal Production School of Veterinary Medicine and Sciences University of Ngaoundr Ngaoundr Cameroon departmen. of En.iron.en.al Scien.es Higher Institute of Agriculture Wood Water and Environment University of Bertoua Bertoua Cameroon departmen. of Biological Scien.es Faculty of Science University of Ngaoundr Ngaoundr Cameroon

Cultivation.of pollin.tor-depen.en. crops has expan.ed globally, in.reasin. our relian.e on.in.ect pollin.tion. This essen.ial ecosystem service is provided by a wide ran.e of man.ged an. wild pollin.tors whose abun.an.e an. diversity are thought to be in.declin., threaten.n. sustain.ble food production. In.Cameroon. several studies on.pollin.tor-depen.en. crops carried out in.differen. agro-ecological zon.s (AEZ) have been.published in.n.tion.l an. in.ern.tion.l journ.ls, in.order to presen. the importan.e an. impact of flowerin. in.ects on.fruit an. seed yields of plan. species. We proposed to produce a review article highlightin. the differen. flowerin. in.ects an. their importan.e for differen. plan.s accordin. to AEZ, without however focusin. on.the quality of the journ.l (predator or n.n.predator) an. how the differen. in.ects were iden.ified (scien.ific n.mes given.in.the publication.). Thus, from 1997 to 2020, we collected 116 published papers from which on.y 26 were kept for this review. The results show that Hymen.ptera, in.ludin. the Apidae, followed by Megachilidae, are the most excellen. pollin.tors of plan. species in.Cameroon. an. they are presen. in.differen. agro-ecological zon.s. The majority of publication. focused on.bees, particularly the hon.ybee Apis mellifera.

关键词： Agro-Ecological Zon.s Cameroon Flowerin. In.ects Hymen.ptera Pollin.tors