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Improved dark ambient degradation of organic pollutants by cerium strontium cobalt perovskite

journal of Environmental Sciences 2020年第4期32卷 110-118页

作者： Huihuang chen Julius Motuzas Wayde Martens joao c.diniz da costa The University of Queensland FIM^2 Lab-Functional Interfacial Materials and Membranes LaboratorySchool of Chemical EngineeringBrisbaneQld 4072Australia Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaAnhui 230026China Science and Engineering Faculty Queensland University of TechnologyBrisbaneQld 4000Australia LAQV-REQUIMTE (Bio)Chemical Process EngineeringDepartment of ChemistryFaculty of Science and TechnologyUniversidade NOVA de LisboaCaparica 2829-516Portugal

This work investigates the effect of cerium substation into strontium cobalt perovskites(ceSrcoo)for the oxidative degradation of orangeⅡ(oII)in dark ambient conditions without the aid of any external stimulants such as light,heating or chemical *** oII degradation rate by ceSrcoo reached 65%in the first hour,whilst for the blank sample without cerium(Srcoo)took over 2 hr to reach the same level of oII ***,the cerium substitution improved the catalytic activity of the perovskite material,mainly associated with the ce0.1Sr0.9coo3 perovskite *** contacting ceSrcoo,the-N=Nazo bonds of the oII molecules broke down resulting in electron donation and the formation of *** electrons are injected into the ceSrcoo and resulted in a redox pair of co3+/co2+,establishing a bridge for the electron transfer between oII and the ***,the electrons also formed reactive species(·oH)responsible for oII degradation as evidenced by radical trapping *** species were formed via the reaction between 02 and donated electrons from oII with the aid of cobalt redox *** the prepared materials dispensed with the need for light irradiation and additional oxidants,it opens a window of environmental applications for treating contaminated wastewaters.

关键词： dark catalysis Acid orange degradation cerium substituted perovskite catalytic activity

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Assessment of postcombustion carbon capture technologies for power generation

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Frontiers of chemical Science and Engineering 2010年第2期4卷 184-195页

作者： Mikel c.DUKE Bradley LADEWIG Simon SMART Victor RUDoLPH joão c.diniz da costa Institute for Sustainability and Innovation Victoria UniversityWerribee CampusPO Box 14428MelbourneVictoria 8001Australia Department of chemical Engineering Monash UniversityClayton Vic 3182Australia School of chemical Engineering The University of QueenslandBrisbane Qld 4072Australia

A significant proportion of power generation stems from coal-combustion processes and accordingly represents one of the largest point sources of co_(2)emissions *** power plants are major assets with large infrastructure and engineering units and an operating life span of up to 50 ***,any process design modification to reduce greenhouse gas emissions may require significant *** of the best options to utilize existing infrastructure is to retrofit the power station fleet by adding a separation process to the flue gas,a practice known as postcombustion capture(Pcc).This review examines the recent Pcc development and provides a summary and assessment of the state of play in this area and its potential applicability to the power generation *** major players including the various institutes,government,and industry consortia are identified along with flue gas Pcc demonstration scale *** the Pcc technologies reviewed,amine-based absorption is preeminent,being both the most mature and able to be adapted immediately,to the appropriate scale,for power station flue gas with minimal technical ***,current commercial applications serve niches in the merchant co_(2)market,while a substantial number of smaller scale test facilities are reported in the literature with actual co_(2)capture motivated demonstrations now *** membrane/absorption systems,also known as membrane contactors,offer the potential for the lowest energy requirements,possibly 10%of current direct scrubbers but are at an early stage of *** methods being actively pursued as R&D projects include solid absorbents,solid adsorbents,gas membrane separators,and cryogenic *** variety and different maturities of these competing technologies make technical comparison largely subjective,but useful insights could be gained through the development and application of econometric techniques such as‘real options’within this ***

关键词： post-carbon capture amine absorption adsorption membranes technology assessment

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computational fluid dynamics applied to high temperature hydrogen separation membranes

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Frontiers of chemical Science and Engineering 2012年第1期6卷 3-12页

作者： Guozhao JI Guoxiong WANG Kamel HooMAN Suresh BHATIA joao c. diniz da costa School of chemical Engineering the University of Queensland Brisbane 4072 Australia School of Mechanical and Mining Engineering the University of Queensland Brisbane 4072 Australia

This work reviews the development of computational fluid dynamics （cFD） modeling for hydrogen separation, with a focus on high temperature membranes to address industrial requirements in terms of membrane systems as contactors, or in membrane reactor arrange- ments. cFD modeling of membrane,.s attracts interesting challenges as the membrane provides a discontinuity of flow, and therefore cannot be solved by the Navier-Stokes equations. To address this problem, tile concept of source has been introduced to understand gas flows on both sides or domains （feed and permeate） of the membrane. This is an important solution, as the gas flow and concentrations in the permeate domain are intrinsically affected by the gas flow and concentrations in the feed domain and vice-versa. In turn, the source term will depend on the membrane used, as different membrane materials comply with different transport mechanisms, in addition to varying gas selectiv- ity and fluxes. This work also addresses concentration polarization, a common effect in membrane systems, though its significance is dependent upon the performance of the membrane coupled with the operating conditions. Finally, cFD modeling is shifting from simplified single gas simulation to industrial gas mixtures, when the mathematical treatment becomes more complex.

关键词： membrane gas separat:ion computationalfluid dynamics concentration polarization hydrogen

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Maximizing biomass utilization: An integrated strategy for coproducing multiple chemicals

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journal of Energy chemistry 2025年第1期100卷 180-191页

作者： Byeongchan Ahn Sua jo jonggeol Na J.Jay Liu Young-Ju Kim Wangyun Won Department of chemical and Biological Engineering Korea University Department of chemical Engineering (Integrated process) Kyung Hee University Department of chemical Engineering and Materials Science Ewha Womans University Department of chemical Engineering Pukyong National University Resources Engineering Plant Research Department Korea Institute of Geoscience and Mineral Resources

Lignocellulosic biomass is one of the viable solutions to alleviate the global warming. However, the limited utilization of biomass majorly focused on cellulose and hemicellulose restricts the economic and environmental feasibilities. To cope with this issue, we proposed an integrated process of co-producing 1,6-hexanediol（1,6-HDo） with tetrahydrofuran and adipic acid from biomass, referred to as Strategy A. To compare the impacts of lignin upgrading and feedstock, Strategy B, which co-produces tetrahydrofuran alone, and Strategy c, which is the traditional route to produce 1,6-HDo from fossil fuels, were used. Heat networks are also designed to reduce operating costs and indirect carbon emissions due to energy consumption, saving 87% and 83% of the heat and cooling requirements, respectively, in Strategy A. The market competitiveness of Strategy A was evaluated by determining the minimum selling price through techno-economic analysis, and sustainability was thoroughly investigated by quantifying the environmental impacts through both midpoint and endpoint life-cycle assessments（LcAs）.Strategy A was found to be the most favorable both economically（USRDScHARDoLLAR3,402/ton） and environmentally（-26.9 kg co2eq.）. This indicates that lignin valorization is not only economically but also environmentally preferred. Finally, changes in economic and environmental feasibilities depending on economic, process, and environmental parameters were investigated using sensitivity and uncertainty analyses. The results of these analyses provide valuable insight into bio-based chemical production.

关键词： Biorefinery carbon mitigation climate change Global warming Lignin utilization Bioeconomy

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Serological surveillance for SARS-coV-2 antibodies among students,faculty and staff within a large university system during the pandemic

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World journal of Virology 2025年第1期14卷 99-107页

作者： Marcos G Pinheiro Gabriela G o Alves Maria Eduarda R conde Sofia L costa Regina c S Sant’Anna Isa M F Antunes Mônica c carneiro Fabio S Ronzei Julia c Scaffo Felipe R Pinheiro Lialyz S Andre Helvecio c Povoa Valéria T Baltar Fabíola Giordani Eduarda S Hemerly Gisele c Alexandre Karla c de Paula Márcio Watanabe Antonio claudio L da Nóbrega Jackeline christiane P Lobato Fabio Aguiar-Alves Laboratory of Molecular Epidemiology and Biotechnology Rodolpho Albino University LaboratoryFluminense Federal UniversityNiterói 24241000Rio de JaneiroBrazil Estácio de SáUniversity Nova Friburgo 28611135Rio de JaneiroBrazil Pathology Program Medicine schoolFluminense Federal UniversityNiterói 24070090Rio de JaneiroBrazil Department of Pharmaceutical Sciences Lloyd L.Gregory School of PharmacyPalm Beach Atlantic UniversityWest Palm BeachFL 33401United States Health Institute of Nova Friburgo Fluminense Federal UniversityNova Friburgo 28613001Rio de JaneiroBrazil Department of Epidemiology and Biostatistics Institute of Collective Health(ISC)Fluminense Federal UniversityNiterói 24033900Rio de JaneiroBrazil Institute of Physical Education Fluminense Federal UniversityNiterói 24020005Rio de JaneiroBrazil Department of Statistics Fluminense Federal UniversityNiterói 24210200Rio de JaneiroBrazil Department of Physiology and Pharmacology Fluminense Federal UniversityNiterói 24210130Rio de JaneiroBrazil

BAcKGRoUND At the end of December 2019,the world faced severe acute respiratory syndrome-coronavirus 2(SARS-coV-2),which led to the outbreak of coronavirus disease 2019(coVID-19),associated with respiratory *** virus has shown significant challenges,especially for senior citizens,patients with other underlying illnesses,or those with a sedentary *** tests conducted early on have helped identify how the virus is transmitted and how to curb its *** study hypothesis was that the rapid serological test for SARS-coV-2 antibodies could indicate the immunoreactive profile during the coVID-19 pandemic in a university *** To conduct active surveillance for serological expression of anti-SARS-coV-2 antibodies in individuals within a university setting during the coVID-19 *** This sectional study by convenience sampling was conducted in a large university in Niteroi-RJ,Brazil,from March 2021 to July *** study population consisted of students,faculty,and administrative staff employed by the university.A total of 3433 faculty members,60703 students,and 3812 administrative staff were invited to *** were gathered through rapid serological tests to detect immunoglobulin(Ig)M and IgG against ***χ²or Fisher's exact test was used to conduct statistical analysis.A 0.20 significance level was adopted for variable selection in a multiple logistic regression model to evaluate *** A total of 1648 individuals were enrolled in the *** proportion of coVID-19 positivity was 164/1648(9.8%).The adjusted logistic model indicate a positive association between the expression of IgM or IgG and age[odds ratio(oR)=1.16,95%cI:1.02-1.31](Po had been in contact with a coVID-19-positive case(oR=3.49,95%cI:2.34-5.37)(Pose who had received the coVID-19 vaccine(oR=2.33,95%cI:1.61-3.35)(Pocial isolation(oR=0.59,95%cI:0.41-0.84)(Pood of sho

关键词： Serological surveillance SARS-coV-2 antibodies coVID-19 Serological rapid test Risk factors for coVID-19

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Genetic variation at the p53 locus of two ecologically divergent Microtus pine voles:identification of molecular markers for species assignment

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Integrative Zoology 2022年第6期17卷 1179-1192页

作者： Ana Sofia QUINA joão Paulo TAVANEZ Maria da Luz MATHIAS cESAM-centro de Estudos do Ambiente e do Mar Departamento de BiologiaUniversidade de AveiroAveiroPortugal cESAM-centro de Estudos do Ambiente e do Mar Faculdade de CiênciasUniversidade de LisboaLisboaPortugal Departamento de Biologia Animal Faculdade de CiênciasUniversidade de LisboaLisboaPortugal Global Health and Tropical Medicine(GHTM) Instituto de Higiene e Medicina Tropical(IHMT)Universidade NOVA de Lisboa(UNL)Portugal

The Lusitanian(Microtus lusitanicus)and the Mediterranean(Microtus duodecimcostatus)pine voles are recently diverged sister species endemic of the Iberian Peninsula that can be identiﬁed with ecological and morphological characters,but in areas where the 2 species co-occur,species designation may be difﬁ*** discrimination between *** and *** has not been achieved yet possibly because of their estimated re-cent split and an evolutionary history that includes inter-species geneﬂ*** our previous observations on exons 5–7 of the p53 gene,here we analyze the potential use of the p53 genomic region as a discrimination marker of these species by extending our analyses to several kb upstream and downstream of the p53 gene and charac-terizing the degree of genetic differentiation in 7 markers within this ***,we fully sequenced the P53 protein of both *** observed:(i)generally high differentiation in this region;(ii)*** showed in general higher values of nucleotide and haplotype diversities;(iii)the concatenated phylogenetic tree separates the 2 species;(iv)the 2 P53 proteins only differ in 1 amino acid;(v)4 of the markers,2 in p53,one in Atp1b2,and another in Wrap53,contain species-speciﬁc genetic variation thus allowing a reliable discrimination between specimens from both species,irrespective of sampling location or introgression *** provide ad-ditional data on the putative role of p53 in the evolution of these species and present researchers with a fast and cost-effective resource for *** and *** identiﬁcation.

关键词： ecological stress genetic variation Microtus molecular marker p53

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Burrow morphology of Uca uruguayensis and Uca leptodactylus(Decapoda:ocypodidae)from a subtropical mangrove forest in the western Atlantic

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Integrative Zoology 2013年第3期8卷 307-314页

作者： Glauco B.o.MAcHADo joão B.L.GUSMÃo-JUNIoR Tânia M.costa campus Experimental do Litoral Paulista UNESPSão VicenteSão PauloBrazil

The continuous excavation of burrows by fiddler crabs generates bioturbation in the sediment,which can be estimated from burrow *** aim of the present study was to describe the burrow morphology of Uca uruguayensis and *** and its relationship with demography of resident individuals and to estimate the level of bioturbation in the sediment generated by each *** all individuals from each of the 2 species,sex was determined and the carapace width(cW;mm)*** were characterized according to burrow diameter(BD;mm),maximum burrow depth(MBD;mm)and burrow volume(BV;cm^(3)).The density of each species in the study area was also *** both species,the males were larger and occupied burrows with higher BV compared to *** between sexes in relation to the burrow characteristics might reflect sexual dimorphism within the group and are probably related to the fact that males use the burrows for *** and BV showed significant positive relationships with the size of resident *** amount of sediment removed per burrow was estimated from mean BV:10.78 cm^(3)of sediment/burrow for *** and 12.38 cm^(3)of sediment/burrow for *** the density and depth differences between the 2 species,the similarity in burrow volume suggests that *** and *** present the same importance in terms of the bioturbation *** morphology is highly associated with characteristics of the occupant,although extrinsic factors should also be considered,and its description can provide estimates on the bioturbation generated by Uca species in mangrove forests.

关键词： bioturbation burrow structure crab burrowing fiddler crab

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Best practices for electrochemical characterization of supercapacitors

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journal of Energy chemistry 2023年第5期80卷 265-283,I0007页

作者： joão Pedro Aguiar dos Santos Fernando cesar Rufino joǎo IYutaka ota Rodolfo cFernandes Rafael Vicentini cesar JBPagan Leonardo Morais da Silva Hudson Zanin Brazilian Renewable Energies Center for Innovation on New EnergiesSchool of Electrical and Computer EngineeringUniversity of CampinasSP 13083-852Brazil School of Electrical and computer Engineering University of CampinasSP 13083-852Brazil Department of chemistry Laboratory of Fundamental and Applied ElectrochemistryFederal University of Jequitinhonha e Mucuri's ValleyRodovia MGT 367km 5835000Alto da Jacuba39100-000 DiamantinaMGBrazil

We discuss here essential aspects of the experimental supercapacitors characterization by a series of well-known electrochemical *** are motivated by a considerable number of publications that misreport procedures and *** often conceal or neglect essential information about the electrochemical analytical apparatus used and its *** lack of such information may lead researchers,especially inexperienced ones,to misunderstand the procedures and ***,the misled electrochemical equipment configuration favors misinterpretation of data and low reproducibility *** paper aims to highlight these issues and clarify *** explain fundamental concepts of some electrochemical analytical methods,such as cyclic voltammetry,galvanostatic charge-discharge,single potential step chronoamperometry,and electrochemical impedance spectroscopy,focusing on the supercapacitor *** configurations of electrical parameters are presented and discussed to highlight the effects of incorrect setup and uncover misleading *** discuss how the electrochemical setup and data analyses matter in reliable data results for the supercapacitor.

关键词： Supercapacitor Electrochemical instrumentation Electrochemical methods Electrochemistry

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Effects of living and metabolically inactive mesenchymal stromal cells and their derivatives on monocytes and macrophages

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World journal of Stem cells 2021年第9期13卷 1160-1176页

作者： Alexia Nedel Sant'Ana Anelise Bergmann Araújo Fabiany da costa Gonçalves Ana Helena Paz Laboratório de células Tecidos e Genes Hospital de Clínicas de Porto AlegrePorto Alegre 90035-903RSBrazil centro de Processamento celular Hospital de Clínicas de Porto AlegrePorto Alegre 90035-903RSBrazil Department of Internal Medicine Erasmus Medical CenterRotterdam 3015 GDNetherlands Departamento de ciências Morfológicas Instituto de Ciências Básicas da SaúdeUniversidade Federal do Rio Grande do SulPorto Alegre 90035-903RSBrazil

Mesenchymal stromal cells (MScs) are multipotent and self-renewing stem cellsthat have great potential as cell therapy for autoimmune and inflammatorydisorders, as well as for other clinical conditions, due to their immunoregulatoryand regenerative properties. MScs modulate the inflammatory milieu by releasingsoluble factors and acting through cell-to-cell mechanisms. MScs switch theclassical inflammatory status of monocytes and macrophages towards a nonclassicaland anti-inflammatory phenotype. This is characterized by an increasedsecretion of anti-inflammatory cytokines, a decreased release of pro-inflammatorycytokines, and changes in the expression of cell membrane molecules and inmetabolic pathways. The MSc modulation of monocyte and macrophage phenotypesseems to be critical for therapy effectiveness in several disease models, sincewhen these cells are depleted, no immunoregulatory effects are observed. Here,we review the effects of living MScs (metabolically active cells) and metabolicallyinactive MScs (dead cells that lost metabolic activity by induced inactivation) andtheir derivatives (extracellular vesicles, soluble factors, extracts, and microparticles)on the profile of macrophages and monocytes and the implications forimmunoregulatory and reparative processes. This review includes mechanisms ofaction exhibited in these different therapeutic appro-aches, which induce the antiinflammatoryproperties of monocytes and macrophages. Finally, we overviewseveral possibilities of therapeutic applications of these cells and their derivatives,with results regarding monocytes and macrophages in animal model studies andsome clinical trials.

关键词： Mesenchymal stromal cells Macrophage Monocyte Immunomodulation cell therapy Immunoregulation

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A Quasilinear System Related with the Asymptotic Equation of the Nematic Liquid crystal’s Director Field

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chinese Annals of Mathematics,Series B 2021年第2期42卷 163-172页

作者： joão-Paulo DIAS Departamento de Matemática and cMAFcIo Faculdade de Ciências da Universidade de LisboaCampo GrandeEdificio C61749-016 LisboaPortugal

In this paper, the author studies the local existence of strong solutions and their possible blow-up in time for a quasilinear system describing the interaction of a short wave induced by an electron field with a long wave representing an extension of the motion of the director field in a nematic liquid crystal’s asymptotic model introduced in[Saxton, R. A., Dynamic instability of the liquid crystal director. In: current Progress in Hyperbolic Systems(Lindquist, W. B., ed.), contemp. Math., Vol.100, Amer. ***., Providence, RI, 1989, pp.325–330] and [Hunter, J. K. and Saxton, R. A., Dynamics of director fields, SIAM J. Appl. Math., 51, 1991, 1498–1521] and studied in [Hunter, J. *** Zheng, Y., on a nonlinear hyperbolic variational equation I, Arch. Rat. Mech. Anal.,129, 1995, 305–353], [Hunter, J. K. and Zheng, Y., on a nonlinear hyperbolic variational equation II, Arch. Rat. Mech. Anal., 129, 1995, 355–383] and in [Zhang, P. and Zheng,Y., on oscillation of an asymptotic equation of a nonlinear variational wave equation,Asymptotic Anal., 18, 1998, 307–327] and, more recently, in [Bressan, A., Zhang, P. and Zheng, Y., Asymptotic variational wave equations, Arch. Rat. Mech. Anal., 183, 2007,163–185].

关键词： Benney system conservation law Schrödinger equation Nematic liquid crystal Director field

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