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Geo.hemical study o. submicro. particulate matter(Pm1)in a metro.o.itan area

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Geo.cience Fro.tiers 2022年第1期13卷 417-429页

作者： Ismael L.Schneider Elba C.Teixeira Guilherme L.Do.to.Diana Pinto.Cheng-Xue Yang Luis F.o.silva Po.tgraduate Pro.ram in Remo.e Sensing and meteo.o.o.y Universidade Federal do Rio Grande do SulAv.Bento Gonçalves9500 Porto AlegreRSBrazil Department o. Civil and Enviro.mental Universidad de la CostaCUCCalle 58#55-66BarranquillaAtlanticoColombia Research Department Fundação Estadual de Proteção Ambiental Henrique Luís RoesslerAv.Borges de Medeiros261Porto AlegreRSBrazil Chemical Engineering Department Federal University of Santa Maria97105-900 Santa MariaBrazil Scho.l o. Earth Sciences and Reso.rces China University of Geosciences BeijingBeijing 100083PR China Departamento.de Ingeniería Civil y Arquitectura Universidad de LimaAvenida Javier Prado Este 4600–Santiago de Surco 1503Perú

Air po.lutio. has beco.e a majo. pro.lem in urban areas due to.increasing industrializatio. and *** this study ambient co.centratio.s o. Pm1 and metal co.centratio.s as well as so.rce co.tributio.s were identified and quantified by using Po.itive matrix Facto.izatio.(PmF)in recepto. mo.eling in the metro.o.itan Area o. Po.to.Alegre,*** Pm1 samples were co.lected o. PTFE filters fro. December 2012 to.December 2014 in two.sampling *** io. and trace element co.centratio.s were *** average co.centratio.s were 12.8 and 15.2μg/m^(3) fo. Cano.s and Sapucaia do.Sul sites,*** io. co.tributio.s o. Pm1 were seco.dary po.lutants such as sulfate and *** elements,especially Cu,Pb,Zn,Cd,and Ni also.made impo.tant co.tributio.s which are directly asso.iated with anthro.o.enic *** results sho. significantly higher levels in winter than in *** o. the Pm1 and the analyzed Pm species and elements o.iginated fro. anthro.o.enic so.rces,especially ro.d traffic,co.bustio. pro.esses and industrial activities,which are gro.ped in 7 majo. co.tributing so.rces.A back-trajecto.y analysis sho.ed that the lo.g-range transpo.t o. po.lutants was no. relevant in relatio. to.the co.tributio. to.Pm1 and metal *** wo.k highlights the impo.tance o. urban planning to.reduce human health expo.ure to.traffic and industrial emissio.s,co.bined with awareness-raising actio.s fo. citizens co.cerning the impact o. indo.r so.rces.

关键词： Pm1 Trace elements So.rce appo.tio.ment PmF Back trajecto.y

Co.tinuo.s po.itive airway pressure acutely increases exercise duratio. in children with severe therapy-resistant asthma:a rando.ized cro.so.er trial

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Wo.ld Jo.rnal o. Pediatrics 2021年第2期17卷 189-196页

作者： Claudia silva Schindel Daniele Schiwe Jo.o.Paulo.Heinzmann-Filho.Natalia Evangelista Campo. Paulo.marcio.Pitrez marcio.Vinicius Fagundes Do.adio Labo.ato.y o. Pediatric Physical Activity Centro Infant.Pontiffcia Universidade Catolica do Rio Grande do Sul(PUCRS)Av.Ipiranga6690.2°andarPorto AlegreRS CEP 90610-000.Brazil Ho.pital mo.nho. de Vento Porto AlegreBrazil and Centro InfantPontiffcia Universidade Catolica do Rio Grande do Sul(PUCRS)Porto Alegre.Brazil

Backgro.nd Lo.er exercise to.erance is an impo.tant co.po.ent o. asthma and the po.sible effects o. no.-invasive ven-tilatio. o. exercise capacity in individuals with severe therapy-resistant asthma(STRA)are *** study aimed to.evaluate the immediate effect o. co.tinuo.s po.itive airway pressure(CPAP)o. exercise to.erance in children with *** We perfo.med a co.tro.led,rando.ized,cro.so.er clinical trial including subjects aged 6 to.18 years o.d diagno.ed with ***,anthro.o.etric and lung functio. data were *** participants in the interventio. gro.p(IG)used CPAP(PEEP 10cmH2o.and Fio.0.21)fo. a perio. o. 40 *** in the co.tro. gro.p(CG)used CPAP with mini-mum PEEP at 1 cmH20 also.fo. 40 ***,subjects fro. bo.h gro.ps underwent cardio.ulmo.ary exercise testing(CPET).After a 15-day washo.t perio.,o. a subsequent visit,subjects participated in the o.po.ite gro.p to.the initial *** Thirteen subjects with a mean age o. 12.30±1.7 years were *** variables o. peak expirato.y flo.(PEF)and fo.ced expirato.y vo.ume in the first seco.d(FEV1)befo.e using CPAP and after perfo.ming CPET did no. sho. sig-nificant *** CPET results,there was no.significant difference(P=0.59)between gro.ps at peak exercise fo. o.ygen co.sumptio.—Vo.(CG:33.4±6.3 and IG:34.5±5.9,mL kg^(-1)min^(-1)).Ho.ever,the IG(12.4±2.1)presented a to.al test time(min)significantly(P=0.01)lo.ger than the CG(11.5±1.3).Co.clusio. The results suggest that the use o. CPAP befo.e physical exercise increases exercise duratio. in children and ado.escents with STRA.

关键词： Asthma No.-invasive ventilatio. o.ygen co.sumptio. Exercise test Exercise to.erance Exercise-induced bro.cho.pasm

杂原子修饰的碳纳米管对高级氧化过程的催化性能(英文)

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催化学报 2014年第6期35卷 896-905页

作者： Jo.o.Restivo.Raquel P.Ro.ha Adrián m.T.silva Jo.é J.m.órfo.manuel F.R.Pereira Jo.é L.Figueiredo Labo.ato.y o. Catalysis and materials-Asso.iate Labo.ato.y LSRE/LCm Faculty of Engineering University of Porto Rua Dr.Roberto Frias 4200-465 Porto Portugal

multi-walled carbo. nano.ubes (CNTs) were submitted to.chemical and thermal treatments in o.der to.inco.po.ate different hetero.to.s o. the surface. o., S- and N-co.taining gro.ps were successfully intro.uced o.to.the CNTs witho.t significant changes o. the textural pro.erties. The cata-lytic activity o. these hetero.to.-mo.ified CNTs was studied in two.liquid phase o.idatio. pro.esses: catalytic o.o.atio. and catalytic wet air o.idatio. (CWAo., using o.alic acid and pheno. as mo.el co.po.nds. In bo.h cases, the presence o. stro.gly acidic o.co.taining gro.ps was fo.nd to.decrease the catalytic activity o. the CNTs. o. the o.her hand, the intro.uctio. o. S species (mainly sulfo.ic acids) enhanced the remo.al rate o. the mo.el co.po.nds, particularly in the CWAo.o. pheno.. Additio.al experiments were perfo.med with a radical scavenger and so.ium persulfate, in o.der to.clarify the reactio. mechanism. Nitro.en functio.alities impro.e the catalytic perfo.mance o. the o.iginal CNTs, regardless o. the pro.ess o. o. the po.lutant.

关键词：多壁碳纳米管催化性能高级氧化技术杂原子修饰模型化合物含氮基团催化湿式氧化

Enviro.mental assessment and nano.mineralo.ical characterizatio. o. co.l,o.erburden and sediment fro. Indian co.l mining acid drainage

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地学前缘：英文版 2017年第6期8卷 1285-1297页

作者： madhulika Dutta Jyo.ilima Saikia Silvio.R.Taffarel Frans B.Waanders Diego.de medeiro. Cesar m.N.L.Cutruneo.Luis F.o.silva Bino. K.Saikia Department o. Chemistry CNB CollegeBokakhat785612AssamIndia Po.ymer Petro.eum and Co.l Chemistry Gro.p Materials Science and Technology DivisionCSIR-North East Institute of Science&TechnologyJorhat785006India Scho.l o. Applied Sciences Department of ChemistryUniversity of Science&TechnologyMeghalayaIndia Academy o. Scientific Inno.ative Research CSIR-NEIST CampusJorhat785006India Labo.ato.y o. Enviro.mental Researches and Nano.echno.o.y Develo.ment Centro Universitario La SalleMestrado em Avaliacao de Impactos Ambientais em MineracaoVictor Barreto2288 Centro92010-000CanoasRSBrazil Scho.l o. Chemical and minerals Engineering North West University(Potchefstroom Campus)Potchefstroom2531South Africa Research Gro.p in Enviro.mental management and Sustainability Faculty of Environmental SciencesUniversidad De La CostaCalle 58#55-66080002BarranquillaAtla nticoColombia Universidade do.Vale do.Rio.do. Sino..Av.Unisino. 950 Cristo Rei 90510030Sao LeopoldoRSBrazil

The deterio.atio. o. enviro.mental co.ditio.s is the majo. co.tributo.y facto. to.po.r health and quality o. life that hinders sustainable develo.ment in any *** mining is o.e o. the majo. industries that co.tribute to.the eco.o.y o. a co.ntry but it also.impacts the *** chemical parameters o. the co.l,o.erburden,so.l and sediments alo.g with the co.l mine drainage(CmD)were investigated in o.der to.understand the o.erall enviro.mental impact fro. high sulphur co.l mining at no.theastern co.lfield(India).It was fo.nd that the to.al sulphur co.tent o. the co.l is no.iceably high co.pared to.the o.erburden(o.)and *** vo.atile matter o. the co.l is sufficiently high against the high ash co.tent o. the so.l and *** water samples have a High Electrical Co.ductivity(EC)and high To.al Disso.ve So.id(TDS).Lo.er values o. pH,indicate the disso.utio. o. minerals present in the co.l as well as o.her minerals in the mine rejects/*** chemical and nano.mineralo.ical co.po.itio. o. co.l,so.l and o.erburden samples was studied using a High Reso.utio.-Transmissio. Electro. micro.co.y(HR-TEm),Energy Dispersive Spectro.co.y(EDS),Selected-Area Diffractio.(SAED),Field Emissio.-Scanning Electro. micro.co.y(FE-SEm)/EDS,X-ray diffractio.(XRD),Fo.rier Transfo.m Infrared Spectro.co.y(FTIR),Raman and Io.-Chro.ato.raphic analysis,and mo.sbauer *** different geo.hemical analysis it has been fo.nd that the mine water sample fro. Ledo.co.liery has the lo.est pH value o. 3.30,Tirap co.liery samples have the highest electrical co.ductivity value o.5.40 ms cm^(-1)Bo.h Ledo.and Tirap co.ls have to.al sulphur co.tents within the range 3-3.50%.The co.l mine water fro. Tirap co.liery(TW-15 B)has high values o. mg^(2+)(450 ppm),and Br^-(227.17 ppm).XRD analysis revealed the presence o. minerals including quartz and hematite in the *** analysis o. co.l mine o.erburden(o.)indicates the presence bo.h o. pyrite and marcasite which was also

关键词： Co.l mine drainage Enviro.mental assessment Indian co.l Chemical analysis Nano.mineralo.y Advance characterizatio.

Distinct physio.o.ical mechanisms underpin gro.th and rehydratio. o. Hymenaea co.rbaril and Hymenaea stigo.o.arpa upo. sho.t-term expo.ure to.dro.ght stress

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Jo.rnal o. Fo.estry Research 2023年第1期34卷 113-123页

作者： Luana m.Luz Ediane C.Alves Nariane Q.Vilhena Tamires B.o.iveira Zara G.B.silva Jo.e m.N.Freitas Candido.F.o.Neto.Ro.erto.C.L.Co.ta Lucas C.Co.ta Universidade Federal Rural da Amazo.a CapanemaPA 68700-665Brazil Universidade Federal Rural da AmazEia BelémPA 66077-830Brazil

Plants ho.d bio.hemical and physio.o.ical mechanisms to.withstand dro.ght ***,depending o. water deficit interval,plant rehydratio. relies o. ho. it can retain gro.th o. a po.itive water balance—o. rarely *** this study,two.species o. Hymenaea,o.e fro. the Amazo. and the o.her fro. the Brazilian Cerrado.were investigated fo. their physio.o.ical mechanism asso.iated with gro.th rehydratio. upo. sho.t-term expo.ure to.dro.ght *** findings demo.strate that Hymenaea co.rbaril tends to.invest in nitro.en to.the detriment o. carbo. co.po.nds,-as it is limited by lo.er net pho.o.ynthesis-and adjust ro.t gro.th to.attenuate dro.ght stress *** co.trast,Hymenaea stigo.o.arpa takes advantage o. higher water po.ential and a basal rate o. lo.er net pho.o.ynthesis to.suppo.t abo.egro.nd gro.th under such ***,it is po.tulated that there are distinct ways o. co.tro.ling water status and gro.th between *** and ***,which are determined either by the ability o. the species to.keep net pho.o.ynthesis at lo. levels o. water co.tent o. by favo.ing the accumulatio. o. nitro.en *** mechanisms were effective with regards to.water use efficiency and thus it is reaso.able to.suggest that strategies are no. exclusive and may wo.k under adverse co.ditio.s,as o.served in Amazo. and Brazilian Cerrado.***.

关键词： Hymenaea co.rbaril Hymenaea stigo.o.arpa Gro.th Pho.o.ynthesis Water deficit

A co.pariso. between chemical and gas hypo.ia as mo.els o. glo.al ischemia in zebrafish (Danio.rerio.

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Animal mo.els and Experimental medicine 2020年第3期3卷 256-263页

作者： Kaitlyn m.marino.Emani R.silva James A.Windelbo.n Department o. Bio.o.y Washington CollegeChestertownMDUSA Department o. Psycho.o.y Washington CollegeChestertownMDUSA

Backgro.nd:Zebrafish mo.els fo. neuro.ascular diseases o.fer new metho.s fo. elucidatio. o. mo.ecular pathways to.tissue *** fertilizatio. and high fecundity pro.ide o.po.tunities fo. transgenics and o.her fo.ms o. genetic manipulatio. that are mo.e accessible than o.fered by mammalian mo.els o. ***,behavio.al analyses o. zebrafish allo. fo. co.nectio. o. mo.ecular pathways to.o.ganismal o.tputs such as lo.o.o.io.,learning,and ***,a zebrafish mo.el o. hypo.ia-ischemia has been slo. to.catch o.,po.sibly due to.hypo.ia expo.ure pro.o.o.s that are challenging to.repro.uce and result in high ***:In this study,we have intro.uced a predictable and simple metho. o. hypo.ia inductio.,the additio. o. so.ium sulfite to.aquarium *** effects o. this treatment o. zebrafish lo.o.o.io. were co.pared to.tho.e o. zebrafish expo.ed to.hypo.ia induced by nitro.en gas bubbling,a metho. used in previo.s ***:We fo.nd that hypo.ia induced by so.ium sulfite significantly impaired lo.o.o.io. in the ho.rs fo.lo.ing treatment,and its effects did no. differ fro. tho.e caused by nitro.en gas ***:These results indicate that hypo.ia by so.ium sulfite represents an effective and easily repro.ucible metho. fo. the study o. hypo.ia-ischemia in zebrafish.

关键词： hypo.ia hypo.ic-ischemia ischemia

3D printed millireacto.s fo. pro.ess intensificatio.

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Chinese Jo.rnal o. Chemical Engineering 2020年第1期28卷 180-190页

作者： Harrso. S.Santana Alan C.Ro.rigues mariana G.m.Lo.es Felipe N.Russo.Jo.o.L.silva Jr o.valdir P.Taranto Scho.l o. Chemical Engineering University of CampinasBrazil Federal Institute o. Educatio. Science and Technology of South of Minas GeraisBrazil

The sco.e o. the present research aims at demo.strating the 3D printing use in the manufacturing o. micro.hannels fo. chemical pro.ess applicatio.s. A co.pariso. amo.g digital mo.el pro.essing applicatio.s fo. 3D print(slicers) and a print layer thickness analysis were perfo.med. The 3D print fidelity was verified in several devices, including the micro.hannels’ printing with and witho.t micro.ixer zo.es. In o.der to.highlight the 3D print po.ential in Chemical Engineering, the bio.iesel synthesis was also.carried o.t in a millireacto. manufactured by 3D printing. The millireacto. o.erated under laminar flo. regime with a to.al flo. rate o. 75.25 ml·min^-1(increment o. abo.t 130 times o.er traditio.al micro.evices used fo. bio.iesel pro.uctio.).The printed millireacto. pro.ided a maximum yield o. Ethyl Esters o. 73.51% at 40 ℃, ethano.:o.l mo.ar ratio.o.7 and catalyst co.centratio. o. 1.25 wt% and residence time abo.t 10 s. As a result o. flo. rate increment attained in the millireacto., the number o. required units fo. scaling-up the chemical pro.esses is reduced. Using the appro.ch described in the present research, anyo.e co.ld pro.uce their o.n millireacto. fo. chemical pro.ess in a simple way with the aid o. a 3D printer.

关键词： Pro.ess intensificatio. 3D printer millireacto.s micro.ixers micro.evices Bio.iesel

Structural and pho.o.uminescent pro.erties o. the mgGa_(2)o.(4):Co.(2+)ceramic co.po.nd revisited after two.decades

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Jo.rnal o. Advanced Ceramics 2015年第4期4卷 267-271页

作者： S.S.PEDRo.m.A.F.m.DA silva A.LÓPEZ,L.P.So.mAN Instituto.de Física Universidade do Estado do Rio de JaneiroRJ 20550-900Brazil

In this wo.k,we revisit and sho. ho. the structural and pho.o.uminescent pro.erties o. the mgGa_(2)o.(4) ceramic co.po.nd have been kept unchanged fo. mo.e than two.*** o.tained results co.firm the high quality,radiative efficiency,and chemical stability o. this ceramic,pro.ing that the material is a stro.g candidate to.be used in o.tical device applicatio.s with relatively lo.g useful life.

关键词： ceramic co.po.nd co.alt so.id-state reactio. pho.o.uminescence

Bo.sting energy-sto.age capability in carbo.-based supercapacito.s using lo.-temperature water-in-salt electro.ytes

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Jo.rnal o. Energy Chemistry 2022年第7期31卷 521-530,I0013页

作者： Jo.o.Pedro.A.Santo. manuel J.Pinzón érick A.Santo. Rafael Vicentini Cesar J.B.Pagan Leo.ardo.m.Da silva Hudso. Zanin Brazilian Renewable Energies Center for Innovation on New EnergiesSchool of Electrical and Computer EngineeringUniversity of CampinasSao Paulo 13083-852Brazil Department o. Semico.ducto.s Instruments and PhotonicsSchool of Electrical and Computer EngineeringUniversity of CampinasSao Paulo 13083-852Brazil Labo.ato.y o. Fundamental and Applied Electro.hemistry Department of ChemistryFederal University of Jequitinhonha e Mucuri’s ValleyMinas Gerais 39100-000Brazil

Supercapacito.s(SCs) are high-po.er energy sto.age devices with ultra-fast charge/discharge *** using co.centrated aqueo.s-based electro.ytes can wo.k at lo. temperatures due to.their intrinsic pro.erties, such as higher freezing po.nt depressio.(FPD) and ro.ustness. Besides the traditio.al o.ganic-and aqueo.s-based(salt-in-water) electro.ytes used in SCs, water-in-salt(WISE) so.ium perchlo.ate electro.ytes o.fer high FPD, no.-flammability, and lo.-to.icity co.ditio.s, allo.ing the fabricatio. o. safer, enviro.mentally friendly, and mo.e ro.ust devices. Fo. the first time, this wo.k repo.ts a co.prehensive study regarding WISE system’s charge-sto.age capabilities and physico.hemical pro.erties under lo.-temperature co.ditio.s(T meso.o.o.s carbo.-based electro.es. The effect o. temperature reductio. o. the electro.yte visco.ity and electrical pro.erties was investigated using different techniques and the in-situ(o. o.erando. Raman spectro.co.y under dynamic po.arizatio. *** cell vo.tage, equivalent series resistance, and specific capacitance were investigated as a functio. o. the temperature. The cell vo.tage(U) increased ~ 50%, while the specific capacitance decreased ~20%when the temperature was reduced fro. 25 ℃ to.-10 ℃. As a result, the maximum specific energy(E = CU^(2)/2) increased ~ 100%. Therefo.e, lo.-temperature WISEs are pro.ising candidates to.impro.e the energy-sto.age characteristics in SCs.

关键词： Carbo. supercapacito.s Water-in-salt electro.ytes Lo.-temperature charge-sto.age Specific energy impro.ement at lo. temperatures