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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

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A remote sensing approach to estimate the load bearing capacity of soil

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Information Processing in Agriculture 2024年第1期11卷 109-116页

作者： Italo Rômulo Mendes de souza Edson Eyji Sano Renato Paiva de Lima Anderson Rodrigo da Silva Statistics and Geoprocessing Laboratory Instituto Federal GoianoGeraldo Silva Nascimento RoadKm 2.575790-000 UrutaíGoiásBrazil Embrapa Cerrados BR-020 RoadKm 18Mailbox 0822373310-970 PlanaltinaDFBrazil department of Soil Science ‘Luiz de Queiroz’College of AgricultureUniversity of São PauloAv.Pádua Dias235-AgronomiaPiracicabaSP 13418-900Brazil

Preconsolidation pressure(σp)of soil can be considered as an indicator of the Load Bearing Capacity(LBC),which is the tolerated surface pressure before compaction,often caused by the traffic of agricultural *** this pioneering study,a remote sensing approach was introduced to estimate LBC throughσp from soils of the“Rio Preto”Hydrographic Basin,Bahia State,Brazil,in a monthly time lapse from 2016 to ***,σp is measured by a laborious and time demanding laboratory analysis,making it unfeasible to map large *** innovative methodology of this work consists of combining active–passive satellite data on soil moisture and pedotransfer functions of clay content and water matric potential to obtain geo-located estimates ofσ*** were analysed under different classes of soil use,land cover and slope;95%confidence intervals were built for the time series of mean values of LBC for each *** overall seasonal variation in LBC estimates is similar in areas with annual crops,grasslands and natural vegetation,and flat areas are less affected by soil moisture variations over the year(between seasons).LBC decreased,in general,at about 0.5%a year in flat ***,these areas demand attention,since they occupy 86%of the Basin and are mostly subjected to agricultural soil management and surface pressure by heavy machinery.

关键词： Soil compaction SMAP Preconsolidation stress Brazilian Cerrado

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Resilience-Oriented Approach to the Control of Ventricular Assist devices

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Journal of Biomedical Science and Engineering 2024年第8期17卷 137-156页

作者： Jônatas Cerqueira dias Jeferson Cerqueira dias Milena Victoria de Azevedo souza Diolino José dos Santos Filho department of Mechatronic Engineering and Mechanical Systems Universidade de So Paulo (USP) So Paulo Brazil department of Mechatronic Engineering and Mechanical Systems Universidade de So Paulo (USP) So Paulo Brazil department of Biomedical Technology Faculdade de Tecnologia Prefeito Hirant Sanazar (FATEC OSASCO) Osasco Brazil

Context: Advanced heart failure (AHF) poses a global challenge, where heart transplantation is a treatment option but limited by donor scarcity. Proposal: This study aims to enhance the performance of ventricular assist devices (VADs) in the face of adverse events (AEs) using a resilience-based approach. The objective is to develop a method for integrating resilience attributes into VAD control systems, employing dynamic risk analysis and control strategies. Results: The outcomes include a resilient control architecture enabling anticipatory, regenerative, and degenerative actions in response to AEs. A method of applied resilience (MAR) based on dynamic risk management and resilience attribute analysis was proposed. Conclusion: Dynamic integration between medical and technical teams allows continuous adaptation of control systems to meet patient needs over time, improving reliability, safety, and effectiveness of VADs, with potential positive impact on the health of heart failure patients.

关键词： Heart Failure Ventricular Assist devices Resilience Dynamic Control

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香椿的树木年轮宽度与超年生殖行为的相互关系:对树轮学研究的警示

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Journal of Plant Ecology 2024年第1期17卷 165-171页

作者： monique Silva Costa Thaís Jorge de Vasconcellos Claudio Sergio Lisi Arno Fritz Neves Brandes Mario Tomazello-Filho Cátia Henriques Callado Instituto de Aplicação Fernando Rodrigues da Silveira Universidade do Estado do Rio de JaneiroRua Barão de Itapagipe96.Rio Comprido 20261-005Rio de JaneiroBrazil Laboratório de Anatomia Vegetal Universidade do Estado do Rio de JaneiroRua São Francisco Xavier524Maracanã20550-013Rio de JaneiroBrazil departamento de Biologia Universidade Federal de SergipeAv.Marechal Rondon s/n-Rosa Elze.São Cristóvão 49100-000SergipeBrazil departamento de Biologia Geral Universidade Federal FluminenseRua Prof.Marcos Waldemar de Freitas ReisS/N.Gragoatá24210-201Rio de JaneiroBrazil Escola Superior de Agricultura Luiz de Queiroz Universidade de São PauloAv.Pádua Dias11.Piracicaba 13418-900São PauloBrazil

资源分配到生殖过程涉及到生态和进化因素,可能会减少植物的营养生长。这种相互关系在自然界中不容易观察到,因为有许多参数可以限制生殖结构的产生或生物量的增加。我们将香椿(Cedrela odorata L.,楝科)在里约热内卢州大西洋森林中的... 详细信息

资源分配到生殖过程涉及到生态和进化因素,可能会减少植物的营养生长。这种相互关系在自然界中不容易观察到,因为有许多参数可以限制生殖结构的产生或生物量的增加。我们将香椿(Cedrela odorata L.,楝科)在里约热内卢州大西洋森林中的树木年轮宽度与超年生殖行为相关联。总体而言,生殖结构的发育发生在湿润的年份,在生长季初期没有出现水分亏缺。然而,在这些年份,树木年轮宽度较小。这些结果可能与树木年轮宽度与当地气候之间缺乏相关性有关。因此,我们强调在径向生长研究中纳入生殖数据的重要性,以扩大对热带森林生长变异性的理解。

关键词：植物生长策略树木年轮学树木生态学生殖权衡

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Integrating species and successional classes for wood production in a mixed forest restoration system in a neotropical region

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Journal of Forestry Research 2021年第6期32卷 2313-2321页

作者： Ananias Francisco dias Junior Ana Lucia Martins Sodero Pincelli Ana Paula Camara da Silva Alison Moreira da Silva Natalia dias de souza Mario Tommasiello Filho Jose Otavio Brito Wood and Forestry Science department Federal University of EspIrito Santo(UFES)Av.Governador Lindemberg316JerOnimo Monteiro CityES 29550-000Brazil São Paulo State School of Technology(FATEC/SP) Av.DiacOno Jair de Oliveira651PiracicabaSP 13414-141Brazil Forest Products department Federal Rural University of Rio de Janeiro(UFRRJ)BR 465km 07SeropEdicaRJ 29890-000Brazil University of SAo Paulo “Luiz de Queiroz”College of Agriculture(USP/ESALQ)Av.PAdua Dias11PiracicabaSP 13418-900Brazil

As forests in neotropical regions,particularly in developing countries,are devastated,interventions to restore biodiversity and its ecological functions are *** producers have thus been encouraged to grow trees for wood production as an economic *** objective of this study was to quantify the increment of wood density of four forest species from different successional classes of a mixed system of restoration in a neotropical forest in *** discs were sampled at breast height and analyzed radially by X-ray densitometry to obtain apparent density and basic *** trees each of a species from the pioneer,early and late secondary successional stages and of the dominant species in the climax *** radial profiles indicated increasing density from the pith to bark of trunks,except for some variations due to wood defects and *** density was 0.576 g cm^(-3),0.655 g cm^(-3),0.706 g cm^(-3)and 0.775 g cm^(-3),respectively,for Peltophorum dubium,Schinus terebinthifolius,Cariniana estrellensis and Hymenaea *** profiles indicated higher amplitudes in the apparent densities for slow-growing species.X-ray densitometry generated parameters such as minimum,average and maximum densities,and radial density *** parameters are important for understanding the ecological functional role of successional classes of the Atlantic Forest from the Neotropical region.

关键词： X-ray densitometry Timber species of neotropical forest Successional classes of forest species Maintenance of forest restoration

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Trends in the hyperfine interactions of magnetic adatoms on thin insulating layers

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npj Computational Materials 2021年第1期7卷 787-796页

作者： Sufyan Shehada Manuel dos Santos dias Filipe souza Mendes Guimarães Muayad Abusaa Samir Lounis Peter Grünberg Institut and Institute for Advanced Simulation Forschungszentrum Jülich&JARAJülichGermany department of Physics RWTH Aachen UniversityAachenGermany Jülich Supercomputing Center Forschungszentrum Jülich&JARAJülichGermany department of Physics Arab American UniversityJeninPalestine Faculty of Physics University of Duisburg-Essen&CENIDEDuisburgGermany

Nuclear spins are among the potential candidates prospected for quantum information technology.A recent breakthrough enabled to atomically resolve their interaction with the electron spin,the so-called hyperfine interaction,within individual atoms utilizing scanning tunneling microscopy(STM).Intriguingly,this was only realized for a few species put on a two-layers thick ***,we systematically quantify from first-principles the hyperfine interactions of the whole series of 3d transition adatoms deposited on various thicknesses of MgO,NaF,NaCl,h–BN,and Cu2N *** identify the adatom-substrate complexes with the largest hyperfine interactions and unveil the main trends and *** reveal the core mechanisms at play,such as the interplay of the local bonding geometry and the chemical nature of the thin films,which trigger transitions between high-and low-spin states accompanied with subtle internal rearrangements of the magnetic *** providing a general map of hyperfine interactions,our work has immediate implications in future STM investigations aiming at detecting and realizing quantum concepts hinging on nuclear spins.

关键词： quantum utilizing breakthrough

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Biomass-glycerol briquettes are not necessarily mechanically stable and energetically effective

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Waste Disposal and Sustainable Energy 2020年第4期2卷 291-303页

作者： Bruno Rafael de Almeida Moreira Ronaldo da Silva Viana Samuel dias Moreira monique dos Santos Lima Anderson Chagas Magalhães Celso Tadao Miasaki JoséClaudio Caraschi department of Phytosanitary Rural Engineering and SoilsSchool of EngineeringSão Paulo State University(Unesp)Ilha SolteiraSão PauloBrazil department of Plant Production College of Agricultural and Technological SciencesSão Paulo State University(Unesp)DracenaBrazil São Paulo State University(Unesp) ItapevaSão PauloBrazil

The re-use of glycerol from biodiesel industry as an alternative lubricant for making high-performance briquettes is ***,the technical performance of this agro-industrial residue is not *** study outlines,accordingly,the real risk of introducing glycerol into the co-briquetting of highly caloric by-products of *** production of hybrid briquettes consisted of pressing mixtures of residues of sugarcane and sorghum with the liquid additive at 10,20,and 30 wt.%in bench-scale hydraulic piston presser *** of the blend,briquettes containing the supplement at the highest level as part of their composition ended up being much more hygroscopic(20.10%)and less energetic(3.15 GJ m^(−3)).The explanation for the negative impact of glycerol on the thermomechanical behavior of briquettes would be overconcen-tration of additive capable of effectively defying compacting *** degree of compaction during co-briquetting has likely gone down quickly with a maximizing level of *** long as the additive is not able to lubricate the feedstock suitably,improbability of biomass particles to successfully bond together to form themselves into mechanically stable and energetically effective briquettes is *** lower density(273.80 kg m^(−3))and higher relaxation(22.75%),briquettes with glycerol at 30 wt.%generally were aesthetically ***,these products resisted no longer to handling,transportation,and *** lost their shape easily during emptying and shifting them,thus,releasing larger quanti-ties of biomass to the *** evidence of high-viscosity glycerol capable of limiting safe and effective production of high-performance briquettes for heating and power exists.

关键词： Additive Agro-residues densification Biosolids Waste-to-energy

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Renin-angiotensin system in the pathogenesis of liver fibrosis

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World Journal of Gastroenterology 2009年第21期15卷 2579-2586页

作者： Regina Maria Pereira Robson Augusto souza dos Santos Filipi Leles da Costa dias Mauro Martins Teixeira Ana Cristina Simoes e Silva department of Pediatrics Faculty of MedicineFederal University of Minas Gerais Laboratory of Hypertension Department of Physiology and BiophysicsInstitute of Biological SciencesFederal University of Minas Gerais Laboratory of Immunopharmacology Department of Biochemistry and ImmunologyInstitute of Biological SciencesFederal University of Minas Gerais

Hepatic fibrosis is considered a common response to many chronic hepatic injuries. It is a multifunctional process that involves several cell types, cytokines, chemokines and growth factors leading to a disruption of homeostatic mechanisms that maintain the liver ecosystem. In spite of many studies regarding the development of fibrosis, the understanding of the pathogenesis remains obscure. The hepatic tissue remodeling process is highly complex, resulting from the balance between collagen degradation and synthesis. Among the many mediators that take part in this process, the components of the Renin angiotensin system （RAS） have progressively assumed an important role. Angiotensin （Ang） II acts as a profibrotic mediator and Ang-（1-7）, the newly recognized RAS component, appears to exert a counter-regulatory role in liver tissue. We briefly review the liver fibrosis process and current aspects of the RAS. This review also aims to discuss some experimental evidence regarding the participation of RAS mediators in the pathogenesis of liver fibrosis, focusing on the putative role of the ACE2-Ang-（1-7）- Mas receptor axis.

关键词： Hepatic fibrosis Renin angiotensin system Angiotensin II Angiotensin-(1-7) Receptor Mas Angiotensin converting enzyme 2

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Quantitative analysis of trigonelline in some Annona species by proton NMR spectroscopy

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Natural Products and Bioprospecting 2013年第4期3卷 158-160页

作者： Alan Rodrigues Teixeira MACHADO Gisele Avelar LAGE Felipe da Silva MEdeIROS José dias de souza FILHO Lúcia Pinheiro Santos PIMENTA departamento de Química ICExUniversidade Federal de Minas GeraisBelo HorizonteMinas Gerais31270-901Brasil

A quantitative ^(1)H NMR method(qHNMR)was used to measure the trigonelline content in the leaves of six species of the Annona *** methodology employed compared the intensities of the signals at δ9.14(H-2)andδ0.00,the internal standard TSP-d_(4).This measuring method was able to establish the concentration of trigonelline in the range from 0.67 to 10.04 mg·g^(-1) depending on the investigated extract.

关键词： trigonelline Annona quantitative^(1)H NMR

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Assessment of Vulnerability of Oxisols to Compaction in the Cerrado Region of Brazil

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Pedosphere 2010年第2期20卷 252-260页

作者： A.E.AJAYI M.S.dias JUNIOR N.CURI A.OKUNOLA T.T.TEIXEIRA souza B.SILVA PIRES department of Agricultural Engineering Federal University of Technology departamento de Ci encia do Solo Universidade Federal de Lavras Federal College of Agriculture Fundacao de Ensino Superior de Passos Universidade do Estado do Minas Gerais

The Cerrado region of Brazil,one of the fastest-growing agricultural areas in the world,is undergoing very rapid mechanization;this development is good for the country's economy but may also snowball into substantial loss of agricultural land and other environmental degradation if the soil susceptibility and vulnerability to compaction is not well *** this study we explored different techniques for estimating soil intrinsic abilities to withstand applied pressure using the prevalent Oxisols of the Cerrado region under native *** samples were collected from three sites within the region and subjected to 1) compressibility test;2) manual penetration resistance test;3) automated penetration resistance test;and 4) packing density *** four methods produced analogous *** results showed the significant influence of soil structure on the inherent strength and compaction susceptibility of the *** also established the association of soil structure with the mineralogy of the *** is noteworthy that the packing density which was developed from very simple and easily obtained parameters could give a picture of the tendency of the soil to ***,this approach would be useful in developing compaction susceptibility maps for the *** could be concluded that most of the Oxisols in the Cerrado region would support mechanized agricultural production very ***,there is need for careful management of the mechanization process to avert *** management techniques should include conservationist practices such as no till in order to maintain as much as possible the favorable structure and drainage of these very old soils.

关键词： compressibility packing density penetration resistance soil structure

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