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Soil Microbial Biomass After Three-Year Consecutive Composted Tannery Sludge Amendment

Pedosphere 2014年第4期24卷 469-475页

作者： M.D.M.SILVA M.BaraJAS-ACEVES A.S.f.araújo f.f.araújo W.J.MELO Soil Quality Lab. Agricultural Science CenterFederal University of PiauiTeresinaPI 64049-550(Brazil) CINVESTAV-IPN Departamento de BiotecnologiaBioingenieriaMexico D.F.PO Box 14-740(Mexico) West Sao Paulo University UNOESTEPresidente PrudenteSP 19067-175(Brazil) Department of Technology Sao Paulo State UniversityJaboticabalSP 14801-902(Brazil)

Brazilian industry produces huge amounts of tannery sludge as residues,which is often disposed by landfilling or land ***,consecutive amendment of such composted industrial wastes may cause shifts in soil microbial biomass(SMB) and enzyme *** study aimed to evaluate SMB and enzyme activity after 3-year consecutive composted tannery sludge(CTS) amendment in tropical sandy *** amounts of CTS(0.0,2.5,5.0,10.0,and 20.0 t ha^(-1)) were applied to a sandy *** C and N contents of SMB,basal and substrate-induced respiration,respiratory quotient(qCO_2),and enzyme activities were determined in the soil samples collected after CTS amendment for 60 d at the third *** 3 years,significant changes were found in soil microbial properties in response to different CTS amounts *** organic matter and Cr contents significantly increased with increasing CTS *** and soil respiration peaked following amendment with 10.0 and 20.0 t ha-1 of CTS,respectively,while qCO_2was not significantly affected by CTS ***,soil enzyme activity decreased significantly with increasing CTS *** CTS amendment for 3 years showed inconsistent and contrasting effects on SMB and enzyme *** decrease in soil enzyme activities was proportional to a substantial increase in soil Cr concentration,with the latter exceeding the permitted concentrations by more than ***,our results suggest that a maximum CTS quantity of 5.0 t ha^(-1) can be applied annually to tropical sandy soil,without causing potential risks to SMB and enzyme activity.

关键词： Cr concentration enzyme activity industrial wastes soil microbial properties tropical soil

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Do vegetative and reproductive phenophases of deciduous tropical species respond similarly to rainfall pulses?

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journal of forestry Research 2013年第4期24卷 643-651页

作者： A.P.Silveira f.S.araújo f.R.Martins Itapipoca faculty of Education Av.Monsenhor Tabosa s/ no.Ceará State University -- UECE Graduate Course of Ecology and Natural Resources Department of BiologyBuilding 906Federal University of Ceará-UFC Department of Plant Biology Institute of BiologyP.O.Box 610University of Campinas – UNICAMP

Deciduous trees with high-density wood that occur in dry seasonal tropical regions respond to rainfall seasonality with synchrony in phenophases. However, they may exhibit interannual differences in synchrony and intensity of phenophases, as strategy for large variations in duration and intensity of rainfall pulses. Nevertheless, it remains unknown how phenophases of deciduous trees of the Brazilian semi-arid region respond to rainfall variations. The phenology of Cordia oncocalyx was monitored in deciduous thorny woodland （Caatinga）, from April 2009 to March 2011, and was correlated with rainfall, soil humidity, temperature, and photoperiod. The rainy years 2009 and 2011 exhibited higher duration of rainfall pulses and lower frequency of interpulses, but in 2010 pulse duration and total rainfall were lower. Circular statistics showed leaf flush followed by flowering and fruiting in the rainy season, and leaf fall and seed dispersal in the dry season.

关键词： asynchrony circular analysis deciduous phenology riskspreading seasonality.

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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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Trace metal dynamics in an industrialized Brazilian river:A combined application of Zn isotopes,geochemical partitioning,and multivariate statistics

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journal of Environmental Sciences 2021年第3期33卷 313-325页

作者： Myller S.Tonhá Daniel f.araújo Rafael araújo Bruno C.A.Cunha Wilson Machado joelma f.Portela joão PR Souza Hikari K.Carvalho Elton L.Dantas Henrique L.Roig Patrick Seyler Jeremie Garnier Universidade de Brasília Instituto de GeociênciasCampus Darcy RibeiroL2Asa Norte70910900 BrasíliaDistrito FederalBrazil Laboratoire de Biogéochimie des Contaminants Métalliques IfremerCentre AtlantiqueF44311 Nantes Cedex 3France Institute of Geosciences University of São PauloRua do Lago562São Paulo 05508-080Brazil Universidade federal fluminense Programa de GeoquímicaCampus do ValonguinhoNiteróiRio de JaneiroBrazil Analytical and Environmental Chemistry Laboratory Instituto de QuímicaUniversity of BrasiliaBrasiliaFederal District 70919-970Brazil Laboratoire Mixte International“Observatoire des Changements Environnementaux”(LMI OCE) Institut de Recherche pour le Développement/University of BrasiliaCampus Darcy RibeiroBrasiliaBrazil Hydrosciences Montpellier Universitéde MontpellierInstitut de Recherche pour le développementCentre National de la Recherche ScientifiqueMontpellierFrance

The Paraiba do Sul(PSR)and Guandu Rivers(GR)water diversion system(120 km long)is located in the main industrial pole of Brazil and supplies drinking water for 9.4 million people in the metropolitan region of Rio de *** study aims to discern the trace metals dynamics in this complex aquatic *** used a combined approach of geochemical tools such as geochemical partitioning,Zn isotopes signatures,and multivariate *** and Pb concentrations in Suspended Particulate Matter(SPM)and sediments were considerably higher in some *** sediment partition of As,Cr,and Cu revealed the residual fraction(f4)as the main fraction for these elements,indicating low *** and Pb were mostly associated with the exchangeable/carbonate(f1)and the reducible(f2)fractions,respectively,implying a higher susceptibility of these elements to being released from *** isotopic compositions of sediments and SPM fell in a binary mixing source process between lithogenic(δ^(66/64)Zn_(JMC)≈+0.30‰)and anthropogenic(δ^(66/64)Zn_(JMC)≈+0.15‰)end *** lighterδ^(66/64)Zn_(JMC)values accompanied by high Zn concentrations in exchangeable/carbonate fraction(Znf1)enable the tracking of Zn anthropogenic sources in the studied ***,the results indicated that Hg,Pb,and Zn had a dominant anthropogenic origin linked to the industrial activities,while As,Cr,and Cu were mainly associated with lithogenic *** work demonstrates how integrating geochemical tools is valuable for assessing geochemical processes and mixing source effects in anthropized river watersheds.

关键词： Metal pollution Isotope tracer Sequential extraction Anthropogenic activity

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Disseminated cutaneous leishmaniasis due to Leishmania(Leishmania) amazonensis in human immunodeficiency virus(HIV)-infected patients: A report of two cases

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Asian Pacific journal of Tropical Medicine 2021年第6期14卷 281-284页

作者： Camila f araújo Iara B N Oliveira Murilo B Silveira fátima Ribeiro-Dias Hospital de Doenças Tropicais Doutor Anuar Auad GoiâniaGoiásBrazil Laboratório de Imunidade Natural(LIN) Instituto de Patologia Tropical e Saúde PúblicaUniversidade Federal de GoiásGoiâniaGoiásBrazil

Rationale: Co-infection of human immunodeficiency virus(HIV) and Leishmania spp. has impact on clinical and therapeutic outcomes of leishmaniases. Most studies do not present the identification of Leishmania species causing American tegumentary leishmaniasis in co-infections. In the Americas, Leishmania(L.) Viannia(V.) braziliensis and L.(V.) guyanensis have been identified. Patient concerns: In this study, two cases of American tegumentary leishmaniasis in patients infected with HIV are described. Patients presented several lesions with rapid dissemination and mucosal involvement. Diagnosis: Disseminated cutaneous leishmaniasis caused by L. amazonensis was identified by molecular test. Interventions: The patients were treated with conventional therapies for HIV infection and American tegumentary leishmaniasis. Outcomes: In co-infection, the clinical manifestations are atypical and the treatment response can be impaired. Lessons: These cases show that HIV infection impacts L. amazonensis infection and point to the relevance of identifying Leishmania species, which can lead to a better patient management.

关键词： Leishmania amazonensis HIV Disseminated cutaneous leishmaniasis Case report

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Long-lasting effects of unplanned logging on the seed rain of mixed conifer-hardwood forests in southern South America

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journal of forestry Research 2021年第4期32卷 1409-1418页

作者： Alexandre f.Souza Angela Luciana deÁvila Maristela M.araújo Solon jonas Longhi Departament of Ecology CBRio Grande Do Norte Federal UniversityCentral CampusLagoa NovaNatal 59072-970RNBrazil forest Growth Department Freiburg Im BreisgauBaden-Vurtemberga Forest Research InstituteWonnhaldestraße 4Freiburg im Breisgau 79104Germany forest Engineering Postgraduate Program Forestry DepartmentSanta Maria Federal UniversityRoraima Av.s/nCamobiSanta Maria 97105-900RSBrazil

Understanding the effects of disturbance on seed rain is critical to predict changes in forest species composition and *** effects on seed rain in a mixed conifer-hardwood forest complex in southern Brazil were *** year of seed rain data were collected from a large-scale observational experiment in logged and protected forests and quantity and average seed size weighted by species abundance(CWM)were compared between old-growth and logged stands 55 years after logging *** these data,variations in frequency of functional groups of species in the seed rain were examined to see if they could be attributed to *** show that the number of seeds per trap was highly right-skewed,ranging from 13 to 12,788 seeds per trap in one *** rain was affected by logging history,with seed traps in old-growth plots receiving significantly less seeds than traps in logged *** species included mean seed size weighted by species abundance were significantly smaller in logged than in old-growth *** difference persisted after the exclusion of arawcaria a large-seeded pioneer which was intensively logged,although the difference of seed size between the two forest classes was greatly *** abundance in the seed rain differed significantly from the established tree community,between logged and oldgrowth *** composition of the seed rain was much more variable than the composition of the established tree community and its points more scattered over the ordination space than the points corresponding to the protected *** number of collected seeds across different functional groups of species significantly differed between logged and old-growth *** seed rain of logged forests reflects their arrested succes sion as indicated by reduced abundance of functional groups such as pioneers,large seeded pioneers and A raucaria,as well as reduced functional diversity.S eed rain differences between logged and old-

关键词： Arrested succession Brazil Logging Long-lived pioneers Seed rain

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How does the brown mussel Perna perna respond to environmental pollution?A review on pollution biomarkers

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journal of Environmental Sciences 2022年第1期34卷 412-428页

作者： fernanda Silva dos Santos Raquel A.f.Neves Mirian araújo Carlos Crapez Valéria Laneuville Teixeira Natascha Krepsky fluminense federal University(Uff) Institute of BiologyGraduate Program in Science and BiotechnologyMario Santos Braga Streets/n.CentroNiteróiRJ CEP 24.020-141Brazil federal University of the State of Rio de Janeiro(UNIRIO) Institute of Biosciences(IBIO)Graduate Program in Neotropical Biodiversity(PPGBIO)Pasteur Avenue458.UrcaRio de JaneiroRJ CEP 22.290-255Brazil fluminense federal University(Uff) Institute of BiologyGraduate Program in Marine Biology and Coastal EnvironmentsMario Santos Braga Streets/n.CentroNiteróiRJ CEP 24.020-141Brazil federal University of the State of Rio de Janeiro(UNIRIO) Institute of Biosciences(IBIO)Graduate Program in Ecotourism and ConservationPasteur Avenue458.UrcaRio de JaneiroRJ CEP 22.290-255Brazil

The brown mussel Perna perna(Linnaeus,1758)is a valuable resource for aquaculture in tropical and subtropical coastal *** presents desirable characteristics for biomonitoring,including being sessile,widely distributed and abundant,and is a filter-feeder able to accumulate several classes of pollutants(e.g.,metals,hydrocarbons,among others).Mussels’biological responses to pollution exposure can be measured as biomarkers,which include alterations ranging from molecular to physiological levels,to estimate the degree of environmental contamination and its effects on *** full review compiles two decades(2000–2020)of literature concerning biological effects on *** mussel caused by environmental pollutants(i.e.,metals,hydrocarbons,and emerging pollutants),considering environmental and farm-based *** markers related to mussels’oxidative status were efficient for the biomonitoring of metals(i.e.,antioxidant enzymes associated with oxidative damage in biomolecules).Genotoxicity and cytotoxicity indicators(i.e.,comet,micronucleus,and neutral red assays)provided a depiction of hydrocarbon *** neutral red assay gave a time-concentration cytotoxic response to a wide range of pollutants,including emerging pollutants(e.g.,pharmaceuticals and biocides)and *** perna hemocyte parameters provided a useful approach for biocide *** paper summarizes useful biomarkers from molecular to physiological levels in this mussel species used to identify and quantify the degree of coastal *** integrated biomarker analysis may provide a way to overcome possible biomarker variations and assess multi-polluted ***,it is necessary to investigate biomarker variations according to natural factors(e.g.,season and gonad maturation stage)to standardize them for trustworthy biomonitoring.

关键词： Biological indexes Biomonitoring Emerging pollutants Hydrocarbons Metals Sentinel species

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Phillipsia olivacea:an uncommon Neotropical discomycete discovered in the Brazilian semiarid

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Studies in fungi 2019年第1期4卷 21-25页

作者： Lopes-Lima AB Valões-araújo JC Wartchow f Universidade federal da Paraíba Departamento de Sistemática e Ecologia/CCENCEP:58051-970João PessoaPBBRAZIL

Phillipsia olivacea is an uncommon discomycete record from *** was described originally from South Brazil and later recorded from Central America and northern South *** it is found for the first time from a montane fo... 详细信息

关键词： Ascomycota Neotropic Pezizomycetes Sarcoscyphaceae taxonomy

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THE EffECT Of MEMORY TERMS IN DIffUSION PHENOMENA

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journal of Computational Mathematics 2006年第1期24卷 91-102页

作者： A. araújo J.A. ferreira P. Oliveira Departamento de Matemática Universidade de Coimbra Portugal

In this paper the effect of integral memory terms in the behavior of diffusion phenomena is studied. The energy functional associated with different models is analyzed and stability inequalities are established. Approximation methods for the computation of the solution of the integro-differential equations are constructed. Numerical results are included.

关键词： Heat propagation Integro-differential equation Numerical approximation,Splitting method

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journal of Energy Chemistry 2022年第10期31卷 88-113,I0003页

作者： Magno B.Costa Moisés A.de araújo Marcos V.de Lima Tinoco Juliana f.de Brito Lucia H.Mascaro Departamento de Química Universidade Federal de São CarlosRodovia Washington Luizkm 235São CarlosSão Paulo 13565-905Brazil Instituto de Química de São Carlos Universidade de São PauloAvenida Trabalhador Sancarlense400São CarlosSão Paulo 13566-590Brazil Instituto de Química Universidade Estadual PaulistaRua Professor Francisco Degnis/nAraraquaraSão Paulo 14800-900Brazil

This review shows the importance of WO_(3)photoanode as a potentially low-cost,efficient,stable,and photoactive material for light-driven water *** such,this manuscript aims to review the most recent publications regarding the strategies to improve the phoelectroactivity of WO_(3)films for water *** addition,this review aims to graphically highlight and discuss the general trendings of the photocurrent density response and stability test of the recent outstanding studies in the literature for photoelectrochemical water splitting *** strategies covered in this review will not only concern the WO_(3)morphology and crystal plane growth,but also the many arrangements possibilities to improve the WO_(3)efficiency for water photoelectrooxidation,such as defect engineering based on oxygen vacancies,doping,decorations,and homo and *** these strategies are compared by the photocurrent density results and by the stability of these *** best results in this sense were observed in cases where the use of heterojunction was applied together with a desired morphology and crystal plane of the WO_(3)***,the modifications that caused a decrease in the photocurrent density reaching values that are even lower than the pure WO_(3)were also *** this way,this review intends to improve the knowledge about the synthesis and design of WO_(3)photoanodes to further obtain an efficient photocatalyst to minimize the recombination losses or losses across the interfaces and improve the photoelectroactivity for water splitting in the large-scale application.

关键词： Solar energy H_(2)production N-type semiconductor Photoelectrode design Oxygen evolution reaction

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