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Transportation Safety and Environment 2021年第2期3卷 123-131页

作者： Linda Lee Ho j́ulio silvio de souza bueno filho Walquiria Yumiko Fujii Cludia A.S.Machado Liedi Legi Bariani Bernucci joséAlberto Quintanilha University of São Paulo Department of Production EngineeringSo Paulo 05508-070Brazil Federal University of Lavras Department of Exact SciencesMinas Gerais 37200-900Brazil University of São Paulo Department of Transport EngineeringSão Paulo 05508-070Brazil Institute of Energy and Environment São Paulo 05508-010Brazil

In this paper we present relevant contributions and important features related to the study of the retroreflectivity performance of pavement *** contribution of this paper is ***,we propose an artificial scheme to allow some randomization of the treatments owing to several restrictions imposed on the choice of the experimental *** is an experiment involving one fixed factor(three types of materials)in a randomized block design executed on a high-traffic-volume *** this condition,the traffic volume works as a stress factor and the degradation of the retroreflectivity of pavement markings is faster than the degradation on rural roads or *** is related to the second contribution:the possibility of a reduction of experimental *** current experiment spent 20 weeks to collect the *** finally a mixed linear model considering three random effects and several fixed effects is fitted and the most relevant effects pointed *** study can help highway managers to improve road safety by scheduling the maintenance of pavement marks at the appropriate time,choosing adequate material for the pavement markings and applying the proposed artificial scheme in future studies.

关键词： highway safety design of experiment mixed linear model longitudinal experiment pavement markings

Authigenic titanite in weathered basalts: Implications for paleoatmospheric reconstructions

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Geoscience Frontiers 2020年第6期11卷 2183-2196页

作者： Alexey A.Novoselov Dailto Silva Carlos Roberto de souza filho Institute of Applied Economic Geology Universidad de ConcepcionConcepcionChile Institute of Geosciences University of CampinasCampinasSPBrazil

The stability of titanite is sensitive to temperature and partial pressure of *** finding of authigenic titanite grains in weathering regolith formed on Parana basalts,Brazil,under tropical climatic conditions,reveals the thermodynamically-driven conversion from calcite to titanite at elevated ambient *** unusual nowadays,this phase transition provides important implications for the understanding of silicate weathering in earlier geological *** types of secondary titanites were identified in the weathering profile of the study *** tiny grains of 10 μm are forming in the microscopic voids in the ***,large fractures filled with Fe-rich clay minerals contain bigger specimens of up to 170μ*** titanites of second type often coexist with chalcedony and *** carbonate minerals were found in the weathering *** sphene can be discriminated from other titanite types by its strong positive Eu anomaly,increased Al2 O3 content and low content of trace *** specific chemical composition and reactive transport modeling link this secondary mineral with dissolution of *** titanite precipitation is controlled by slow diffusion in poorly-aerated,highly-alkaline pore *** subaerial weathering of basaltic rocks provides a significant reservoir for atmospheric ***,the deposition of carbonate minerals is thermodynamically avoided at the stability field of *** demonstrate a complex feedback between CO2 and soil *** rise in pCO2 triggers the precipitation of calcite in the weathering regolith,but the greenhouse effect increasing the temperature can cease carbonate *** titanites were found in several paleosols and at least a part of them can be of weathering origin.

关键词： Titanite Sphene Calcite Paleosols Weathering Paleoclimates

Crop residues: applications of lignocellulosic biomass in the context of a biorefinery

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Frontiers in Energy 2022年第2期16卷 224-245页

作者： Maria Carolina ANDRAde Caio de Oliveira GORGULHO SILVA Leonora Rios de souza MOREIRA Edivaldo Ximenes FERREIRA filho Laboratory of Enzymology Department of Cellular BiologyUniversity of BrasiliaBrasiliaDFBrazil

Interest in lignocellulosic biomass conversion technologies has increased recently because of their potential to reduce the dependency on non-renewable feedstocks. Residues from a variety of crops are the major source of lignocellulose, which is being produced in increasingly large quantities worldwide. The commercial exploitation of crop residues as feedstocks for biorefineries which could be used to produce a variety of goods such as biofuels, biochemicals, bioplastics, and enzymes is an attractive approach not only for adding value to residues but also for providing renewable products required by the expanding bioeconomy market. Moreover, the implementation of biorefineries in different regions has the potential to add value to the specific crop residues produced in the region. In this review, several aspects of crop residue application in biorefineries are discussed, including the role of crop residues in the bioeconomy and circular economy concepts, the main technical aspects of crop residue conversion in biorefineries, the main crop residues generated in different regions of the world and their availability, the potential value-added bioproducts that can be extracted or produced from each crop residue, and the major advantages and challenges associated with crop residue utilization in biorefineries. despite their potential, most biomass refining technologies are not sufficiently advanced or financially viable. Several technical obstacles, especially with regard to crop residue collection, handling, and pre-treatment, prevent the implementation of biorefineries on a commercial scale. Further research is needed to resolve these scale-up-related challenges. Increased governmental incentives and bioeconomic strategies are expected to boost the biorefinery market and the cost competitiveness of biorefinery products.

关键词： crop residue biorefinery bioproduct biomass circular bioeconomy enzyme

determining the effective elastic thickness through cross-correlation between isostatic disturbances

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Geodesy and Geodynamics 2024年第3期15卷 241-251页

作者： Nelson Ribeiro-filho Cristiano Mendel Martins Raissa Moraes Baldez Ivaldevingles Rodrigues de souza júnior Franck Eitel Kemgang Ghomsi Instituto Federal do Pará(IFPA) AltamiraParáBrazil Universidade Federal do Pará(UFPA) BelemParáBrazil Nansen-Tutu Center for Marine Environmental Research Department of OceanographyUniversity of Cape TownSouth Africa Geodesy Research Laboratory National Institute of CartographyYaoundeCameroon

The elastic thickness parameter was estimated using the mobile correlation technique between the observed isostatic disturbance and the gravity disturbance calculated through direct gravimetric modeling. We computed the vertical flexure value of the crust for a specific elastic thickness using a given topographic dataset. The gravity disturbance due to the topography was determined after the calculation. A grid of values for the elastic thickness parameter was generated. Then, a moving correlation was performed between the observed gravity data(representing actual surface data) and the calculated data from the forward modeling. The optimum elastic thickness of the particular point corresponded to the highest correlation coefficient. The methodology was tested on synthetic data and showed that the synthetic depth closely matched the original depth, including the elastic thickness value. To validate the results, the described procedure was applied to a real dataset from the Barreirinhas Basin, situated in the northeastern region of Brazil. The results show that the obtained crustal depth is highly correlated with the depth from known models. Additionally, we noted that the elastic thickness behaves as expected, decreasing from the continent towards the ocean. Based on the results, this method has the potential to be employed as a direct estimate of crustal depth and elastic thickness for any region.

关键词： Isostasy Elastic thickness Isostatic disturbance Moho depth Cross-correlation

dendrochronology and climatic signals in the wood of Nectandra oppositifolia from a dense rain forest in southern Brazil

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journal of Forestry Research 2019年第2期30卷 545-553页

作者： Daniela Granato-souza Eduardo Adenesky-filho Karin Esemann-Quadros Postgraduate Program in Forestry Regional University of Blumenau-FURB department of Biological Sciences University of Joinville Region-UNIVILLE

Nectandra is one of the most representative genera of Lauraceae in the subtropical Atlantic Forest of Brazil. The objective of this work was to study the dendrochronological potential of Nectandra oppositifolia Nees and Mart. from two sites in Santa Catarina State in southern Brazil. A tree-ring chronology of 34 trees was developed. The time span ranged from 1843 to 2013. The oldest and youngest trees were 171 and 47 years-old and the average length of the series was 103 years. Average diameter and annual increment were 20.64 cm and0.74 mm a-1; diameter and age were unrelated. The species has good dendrochronological potential with an intercorrelation of 0.61 between sites, indicating the existence of a synchronous pattern in the development of the trees. The climate response of the species could be seen by negative tree growth effects for previous hot and current rainy growth seasons.

关键词： Climate response dendroclimatology Atlantic forest Growth rings Lauraceae

Fractionation of rare earth and other trace elements in crabs,Ucides cordatus,from a subtropical mangrove affected by fertilizer industry

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journal of Environmental Sciences 2017年第4期29卷 69-76页

作者： Alice Bosco-Santos Wanilson Luiz-Silva Emmanoel Vieira da Silva-filho Monique Dias Corrêa de souza Elton Luiz Dantas Margareth Sugano Navarro State University of Campinas (UNICAMP) Institute of Geosciences Department of Geology and Natural Resources Campinas Sao Paulo 13083870 Brazil . Fluminense Federal University (UFF) Institute of Chemistry Department of Geochemistry Niteroi Rio de Janeiro 24900970 Brazil University of Brasília(UnB) Institute of Geosciences Department of Geology Brasflia Distrito Federal 70910900 Brazil

Fractionation of rare earth elements（REE） and other trace metal concentrations（Th, U, Cd,Cr, Cu, Ni, Pb, and Zn） between mangrove sediments and claw muscles and shells of male crabs（Ucides cordatus） from a subtropical estuary highly impacted by fertilizer industry activities was investigated. This is the first record of REE distribution in these organisms,and the results showed higher accumulations of these metals, U and Th in shells, probably related to the replacement of Ca during molting. Contents of Cd, Cr and Ni were similar in both tissues, but Cu, Zn and Pb were mostly accumulated in the claw muscle with concentrations above those considered safe for human consumption according to the Brazilian legislation. REE fractionation was different in the analyzed tissues being softer in the shells. The results provided evidences that the water absorbed during molting controls the chemistry of REE in shells. In contrast, the chemistry of REE in the claw muscle, in which was observed preferential absorption of light REE, is controlled by diet. REE fractionation obtained for the claw muscles was closely correlated to the observed in the contaminated substrate and in materials related to the production of phosphate fertilizers（contamination source）, which supports their transference to this Ucides cordatus tissue without fractionation by the ingestion of sediments. Our results showed the potential use of crab tissues for monitoring REE and trace element sources in mangrove areas, with claw muscle exhibiting the contaminant source fingerprint.

关键词： Rare earth elements Trace metals Fertilizer contamination Crabs

Plant growth and nutrient use efficiency of two native Fabaceae species for mineland revegetation in the eastern Amazon

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journal of Forestry Research 2020年第6期31卷 2287-2293页

作者： silvio j.Ramos Markus Gastauer Simone K.Mitre Cecı´lio F.Caldeira joyce R.Silva Antonio E.Furtini Neto Guilherme Oliveira Pedro W.M.souza filho jose´O.Siqueira Instituto Tecnolo´gico Vale Rua Boaventura da Silva955Belem 66055-090Brazil departamento de Ciencia do Solo Universidade Federal de LavrasLavras 37200-000Brazil

The primary challenge of mineland revegetation is the establishment of species able to cope with low availability of nutrients,especially in steep slopes such as of mine *** evaluated plant growth response and nutrient use efficiency(NUE)of two promising native Fabaceae species(Dioclea apurensis—liana from metalliferous savannas;Bauhinia longipedicellata—tree from Amazon rainforest)from the Caraja´s Mineral Province,eastern *** were grown separately in 2-kg pots filled with mining *** were fertilized with nitrogen,phosphorus,potassium(NPK),lime,and *** results showed increments on growth of both species when nutrients were applied to the mining *** showed increases in leaf area,plant height,stem diameter,and shoot dry mass production when NPK or NPK?micronutrients were applied,while *** was responsive to application of NPK?lime or NPK?lime?***,*** showed higher NUE than ***,especially at the lowest doses of N,P and *** findings may indicate a substantial advantage of *** for mineland revegetation,as this species may require lower nutrient inputs,being,therefore,a more sustainable way to revegetate degraded areas.

关键词： Fertilizer application Mining soil Tropical forest Nutrient use efficiency

Unwrapping reworked crust at the Columbia supercontinent margin within central southern Amazon Craton using multi-source geophysics and geochronology data synergy

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Geoscience Frontiers 2022年第3期13卷 35-52页

作者： joão G.Motta P.G.Betts V.T.Meira V.G.Trevisan C.R.de souza filho Institute of Geosciences University of CampinasCampinasSão PauloBrazil Camborne School of Mines University of ExeterPenryn CampusPenrynCornwallUnited Kingdom School of Earth Atmosphere and EnvironmentMonash University(Clayton Campus)ClaytonVICAustralia Anglo American Níquel Brasil Ltda. Avenida Interlândia502 QD 87LST 68 e 10GoiâniaGoiásBrazil

The geometry and evolution of pre-existing basement in accretionary belts bordering supercontinents are often *** interpretation of long-wavelength potential field satellite data can image deep crust structure,improving our understanding of lithospheric processes that formed these margins ***,we present a multidisciplinary interpretation of the lithospheric architecture of the central southern Amazon Craton,a fragment of an accretionary belt at the southwestern Columbia supercontinent ***-borne gravity and magnetic data,airborne magnetic data,passive seismic(V_(p)/V_(s) ratio,crustal thickness)and seismic tomography data reveals that basement terranes from the interior of the craton extend into the accretionary margin of *** demonstrate a vertically heterogeneous structure with an underlying strongly reworked pre-Columbia tectonic wedge that sustained prolonged modification during the supercontinent assembly as corroborated by Nd isotope and geochronology *** isotope data suggest that the protracted orogenic wedge was influenced by subduction angle shifts over time,including addition of substantial juvenile material during slab retreat *** interplay promoted Craton growth at the supercontinent margin while keeping a subtle record of the pre-existing *** findings point to the possible misrepresentation of basement extension and geometry of supercontinent margins elsewhere.

关键词： Satellite gravity Satellite magnetics Columbia Accretionary belt Amazon Craton Geochronology

177Hf as a Competitor in the Synthesis of 177Lu-DOTAtate

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journal of Chemistry and Chemical Engineering 2016年第5期10卷 238-240页

作者： jose de souza Caldeira filho Centro de Tecnologia das Radiacoes. Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN/SP. Av.

This study reveals the interference of 177Hf, a decay product of 177Lu, in the synthesis of 177Lu-DOTAtate, In the experiments we followed three 177Lu t1/2. The molar ratio Lu： DOTAtate used was calculated for each decay, in two situations： 1） without considering the influence of 177Hf; 2） considering the influence of 177Hf. The results compare both the calculated molar ratio and the radionuclide incorporation yields （%） in these situations. The yields increase when 177Hf influence is considered. This suggests that 177Hf is an important competitor for DOTAtate binding site. These data are relevant in the synthesis of the radiopharmaceutical 177Lu-DOTAtate with high specific activity.

关键词： Hafnium 177Lu-DOTAtate molar ratio radiopharmaceutical.

Turning Industrial Waste into a Valuable Bioproduct:Starch from Mango Kernel derivative to Oil Industry Mango Starch derivative in Oil Industry

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journal of Renewable Materials 2019年第2期7卷 139-152页

作者： Nívia do Nascimento Marques Caroline Suzy do Nascimento Garcia Liszt Yeltsin Coutinho Madruga Marcos Antônio Villetti Men de SáMoreira de souza filho Edson Noriyuki Ito Rosangela de Carvalho Balaban Instituto de Química Universidade Federal do Rio Grande do Norte-UFRNNatal59078970Brazil departamento de Física Universidade Federal de Santa Maria-UFSMSanta Maria97105900Brazil Embrapa Agroindústria Tropical Fortaleza60511-110Brazil departamento de Engenharia de Materiais Universidade Federal do Rio Grande do Norte-UFRNNatal59078970Brazil

After industrial mango processing,tons of residues such as peels and kernels are discarded as ***,almost 60% of the mango kernel is due to starch on a dry weight ***,starch from mango(Manguifera Indica L.)kernel was applied to obtain a starch fatty ester with vinyl laurate,in DMSO,under basic ***,1H and 13C NMR confirmed that a starch ester with a degree of modification of 2.6 was *** showed that the modified starch has higher thermal stability than its precursors and higher than a vinyl laurate/starch physical *** data showed that granular shape and smooth surface on mango starch changed after chemical modification to a continuous and shapeless *** industrial reject derivative behaved as an efficient alternative environmentally friendly fluid loss controller in oil drilling fluids,even in conditions of high temperatures and high pressures(HTHP)drilling.

关键词： Mango Starch oil drilling fluid transesterification vinyl laurate