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The effect of abiotic stresses on plant C:N:P homeostasis and their mitigation by silicon

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The Crop Journal 2024年第2期12卷 340-353页

作者： Milton Garcia costa Renato de Mello Prado Luiz Fabiano Palaretti Jonas pereira de Souza Júnior Department of Agricultural Production Science School of Agricultural and Veterinarian SciencesSão Paulo State UniversityJaboticabalBrazil

In crop plants, various environmental stresses affect the balance of carbon, nitrogen, and phosphorus(C:N:P), leading to biochemical and physiological alterations and reductions in yield. Silicon(Si) is a beneficial element that alleviates plant stress. Most studies involving silicon have focused on physiological responses, such as improvements in photosynthetic processes, water use efficiency, and antioxidant defense systems. But recent research suggests that stressed plants facing either limited or excessive resources(water, light, nutrients, and toxic elements), strategically employ Si to maintain C:N:P homeostasis, thereby minimizing biomass losses. Understanding the role of Si in mitigating the impact of abiotic stresses on plants by regulating C:N:P homeostasis holds great potential for advancing sustainable agricultural practices in crop production. This review presents recent advances in characterizing the influence of environmental stresses on C:N:P homeostasis, as well as the role of Si in preserving C:N:P equilibrium and attenuating biological damage associated with abiotic stress. It underscores the beneficial effects of Si in sustaining C:N:P homeostasis and increasing yield via improved nutritional efficiency and stress mitigation.

关键词： Nutritional stoichiometry Elemental stoichiometry Beneficial element Environmental stresses Nutritional efficiency Carbon use efficiency Agricultural sustainability

Natural Gas Power Plants in the System Security Role—The Situation and Solutions in Brazil

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Energy and Power Engineering 2024年第4期16卷 151-178页

作者： Ciro Galvão Hirdan Katarina de Medeiros costa Eduardo Guedes pereira Edmilson Moutinho dos Santos Dorel Soares Ramos Polytechnic School (EP) University of S&#227o Paulo S&#227o Paulo Brazil Institute of Energy and Environment (IEE) University of S&#227o Paulo S&#227o Paulo Brazil

This study aims to apply a methodology to analyze the regulatory obstacles for the development of thermal power plants in a country. The study uses Brazil as an application case, although mostly of the findings can be useful to other countries. It also discusses other policies and actions by the government that may contribute to the growth of natural gas-fired power plants. Using deductive and comparative research methods, the first part of this method focuses on the stage of thermoelectric power generation in Brazil. The subsequent sections present the role of the integration of gas and electricity sectors, the main obstacles to the expansion of natural-gas power generation, how the country has deal with the expansion of natural-gas power generation, as well as how other obstacles has been faced. In raising the research question, when comparing the research results of selected countries, it should be noticed the impact that the experience and lessons elsewhere have had on policies formulation on Brazil. Our conclusions pointed out that adequate policies for the natural gas-electricity Brazilian market integration make advisable the unification of electricity and natural gas agencies. We recommended developing a mathematical model to support decision-making on natural gas and electricity integration.

关键词： Component Formatting Style Styling Insert

Bibliographical Review on Rehabilitation of Executive Functions in Patients With Developmental Coordination Disorder(DCD)

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Psychology Research 2024年第2期14卷 45-56页

作者： Keiko da costa Oikawa Fabrício Bruno Cardoso Filipe M.Bonone Samuel pereira de Souza Vitor da Silva Loureiro Alfred Sholl-Franco Faculdade Censupeg JoinvilleBrazil Faculdade Censupeg JoinvilleBrazil Universidade Federal do Rio de JaneiroRio de JaneiroBrazil

The present study aims to establish a literature review on intervention programs for executive functions(EFs)through the use of fundamental motor skills,from a neuropsychopedagogical perspective in subjects with Developmental Coordination Disorder(DCD).An exploratory study was carried out through an integrative literature *** research was carried out in the Scientific databases Electronic Library Online(SciELO),Latin American and Caribbean Literature in Health Sciences(LILACS),Virtual Health Library-Psychology Brazil(BVSPSI),Electronic Journals of Psychology(PePSIC),in the periodicals available in the Brazilian Digital Library of Theses and Dissertations(BDTD)and on the website of the Coordination for the Improvement of Higher Education Personnel(CAPES).The covering publications took place from 2018 to 2023,14 articles were selected for *** literature review made it possible to create strategies for stimulating EF and Visuomotor Functions so that educators and other professionals can better deal with students with *** was perceived the need to carry out and develop more empirical research regarding the intervention of EFs and Visuomotor Functions by educators and professionals,with a greater sampling amplitude,to increase the number of studies that enable interventions both in children and in teenagers with DCD.

关键词： developmental coordination disorder executive functions school neuropsychology stimulation of executive functions

Antiglycation and antioxidant activities of the crude extract and saponin fraction of Tribulus terrestris before and after microcapsule release

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Journal of Integrative Medicine 2022年第2期20卷 153-162页

作者： Célia Cristina Malaguti Figueiredo Amanda da costa Gomes Filipe Oliveira Granero Joao Luiz Bronzel Junior Luciana pereira Silva Valdecir Farias Ximenes Regildo Márcio Goncalves da Silva Institute of Chemistry São Paulo State UniversityAraraquaraSão Paulo 14800-060Brazil Educational Foundation of the City of Assis AssisSão Paulo 19807-130Brazil Department of Chemistry School of SciencesSão Paulo State UniversityBauruSão Paulo 17033-360Brazil Department of Biotechnology School of SciencesHumanities and LanguagesSão Paulo State UniversityAssisSão Paulo 19806-900Brazil

Objective:The present study investigated antiglycation and antioxidant activities of crude dry extract and saponin fraction of Tribulus *** also developed a method of microencapsulation and evaluated antiglycation and antioxidant activities of crude dry extract and saponin fraction before and after microcapsule ***:Antiglycation activity was determined by relative electrophoretic mobility(REM),free amino groups and inhibition of advanced glycation end-product(AGE)*** activity was determined by 2,2-diphenyl-1-picrylhydrazyl(DPPH),ferric ion-reducing antioxidant power(FRAP),nitric oxide(NO)and thiobarbituric acid reactive species(TBARS)*** were prepared using maltodextrin as wall material and freeze-drying as encapsulation *** characterization of microcapsules was evaluated by scanning electron microscopy,and encapsulation efficiency and microcapsule release were determined by total saponins *** and antioxidant assays were performed using crude dry extract and saponin fraction of *** before and after ***:Saponin fraction showed an increase of 32.8%total ***-performance liquid chromatography-mass spectrometry analysis showed the presence of saponins in the obtained *** evaluation by REM demonstrated that samples before and after release presented antiglycation activity similar to bovine serum albumin treated with ***,samples inhibited AGE formation,highlighting treatment with saponin fraction after release(89.89%).Antioxidant tests demonstrated antioxidant activity of the *** dry extract before encapsulation presented the highest activities in DPPH(92.00%)and TBARS(32.49%)*** fraction before encapsulation in FRAP test(499μmol Trolox equivalent per gram of dry sample)and NO test(15.13μmol nitrite formed per gram of extract)presented the highest ***:This study presen

关键词： Glycation Microencapsulation Oxidative stress Saponins Tribulus terrestris

Toxicity assessment of polyethylene microplastics in combination with a mix of emerging pollutants on Physalaemus cuvieri tadpoles

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Journal of Environmental Sciences 2023年第5期127卷 465-482页

作者： Amanda pereira da costa Araújo Thiarlen Marinho da Luz Mohamed Ahmed Ibrahim Ahmed Mir Mohammad Ali Md.Mostafizur Rahman Bojan Nataraj daniela de Melo e Silva damiàBarceló Guilherme Malafaia Post-Graduation Program in Environmental Sciences Federal University of GoiásGoianiaGO 74690-970Brazil Laboratory of Toxicology Applied to the Environment Goiano Federal InstituteUrutaíGO 75790-000Brazil Plant Protection Department Faculty of AgricultureAssiut UniversityAssiut 71526Egypt Department of Aquaculture Faculty of FisheriesAquaculture&Marine ScienceSher-e-Bangla Agricultural UniversityDhaka 1207Bangladesh Department of Environmental Sciences Jahangirnagar UniversitySavar 1342Bangladesh Unit of Toxicology Department of ZoologySchool of Life SciencesBharathiar UniversityCoimbatore 641046India Laboratory of Environmental Mutagenesis Federal University of GoiásGoianiaGO 74690-970Brazil Catalan Institute for Water Research(ICRA-CERCA) H_(2)O BuildingScientific and Technological Park of the University of GironaEmili Grahit 101Girona 17003Spain Water and Soil Quality Research Group Department of Environmental ChemistryInstitute of Environmental Assessment and Water Research(IDAEA-CSIC)JordiGirona 1826Barcelona 08034Spain Post-Graduation Program in Conservation of Cerrado Natural Resources Goiano Federal InstituteUrutaíGO 75790-000Brazil Post-Graduation Program in Ecology Conservationand BiodiversityFederal University of UberlandiaUberlandiaMG 38400-902Brazil Post-Graduation Programa in Biotechnology and Biodiversity Federal University of GoiásGoianiaGO 74605-050Brazil

Studies in recent years have shown that aquatic pollution by microplastics(MPs)can be considered to pose additional stress to amphibian ***,our knowledge of how MPs affect amphibians is very rudimentary,and even more limited is our understanding of their effects in combination with other emerging ***,we aimed to evaluate the possible toxicity of polyethylene MPs(PE-MPs)(alone or in combination with a mix of pollutants)on the health of Physalaemus cuvieri *** 30 days of exposure,multiple biomarkers were measured,including morphological,biometric,and developmental indices,behavioral parameters,mutagenicity,cytotoxicity,antioxidant and cholinesterase responses,as well as the uptake and accumulation of PE-MPs in *** on the results,there was no significant change in any of the parameters measured in tadpoles exposed to treatments,but induced stress was observed in tadpoles exposed to PE-MPs combined with themixture of pollutants,reflecting significant changes in physiological and biochemical *** principal component analysis(PCA)and integrated biomarker response(IBR)assessment,effects induced by pollutants in each test group were distinguished,confirming that the exposure of *** tadpoles to the PE-MPs in combination with a mix of emerging pollutants induces an enhanced stress response,although the uptake and accumulation of PE-MPs in these animalswas ***,our study provides newinsight into the danger to amphibians of MPs coexisting with other pollutants in aquatic environments.

关键词： Amphibians Environmental toxicology Micropollutants Emerging pollutants Aquatic pollution Biomarkers

Soil texture prediction through stratification of a regional soil spectral library

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Pedosphere 2022年第2期32卷 294-306页

作者： José Janderson Ferreira costa élvio GIASSON Elisangela Benedet da SILVA Tales TIECHER Antonny Francisco Sampaio DE SENA Ryshardson Geovane pereira de Oliveira E SILVA Department of Soil Science Faculty of AgronomyUniversity of Rio Grande do SulBento Gonçalves Avenue 7712Porto Alegre 91540-000Brazil Agricultural Research and Rural Extension Corporation of Santa Catarina Rodovia Admar Gonzaga 1347FlorianópolisSanta Catarina 88034-901Brazil

Knowing the spatial distribution of soil texture,which is a physical property,is essential to support agricultural and environmental decision *** texture can be estimated using visible,near infrared,and shortwave infrared(Vis-NIR-SWIR)***,the performance of spectroscopic models is variable because of soil ***,few studies address the effects of soil sample variability on the performance of the models,especially for larger spectral libraries that include soils that are more ***,the objectives of this study were to:i)apply Vis-based color parameters on the stratification of a regional soil spectral library;ii)evaluate the performance of the predictive models generated from the spectral library stratification;iii)compare the performance of stratified models(SMs)and the model without stratification(WSM),and iv)explain possible changes in prediction accuracy based on the ***,a regional soil spectral library with 1535 samples from the State of Santa Catarina,Brazil was *** reflectance data were obtained by Vis-NIR-SWIR spectroscopy in the laboratory using a spectroradiometer covering the 350–2500 nm spectral ***,silt,and clay fractions were determined using the pipette ***-two components of color parameters were derived from the Vis spectrum using the colorimetric models.A cubist regression algorithm was used to assess the accuracy of the applicability of the initial models(SMs and WSM)and of the validation between the *** order derivatives(FODs)at 0.5,1.5,and 2 intervals were used to explain possible changes in the performance of the *** SMs with higher contents of clay and iron oxides obtained the highest accuracy,and the most important spectral bands were identified,mainly in the 480–550 and 850–900 nm ranges and the 1400,1900,and 2200 nm ***,stratification of soil spectral libraries is a good strategy to improve regional assessments of soil resou

关键词： color parameters cubist regression fractional order derivatives soil spectroscopy spectroscopic model stratified model Vis-NIR-SWIR

An illustrated checklist of macrofaunal molluscs from soft-sediments of the Abrolhos Parcel(northeastern,Brazil)with 15 new records

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Journal of Oceanology and Limnology 2021年第2期39卷 671-682页

作者： Flávia Maria pereira da costa Ana Maria Setubal PIRES-VANIN Departamento de Oceanografi a Biológica Instituto Oceanográfi coUniversidade de São PauloSão Paulo 05508-120Brazil

Comprehensive understanding of marine biodiversity is essential for conservation,especially for vulnerable *** this paper,we implemented and illustrated a checklist of molluscs from the Abrolhos Parcel,Brazil,the most important coralline area in South Atlantic *** list features 100 species belonging to 4 classes and 85 genera,of which 15 are new records for Bahia State,northeast *** results highlight the potential for new records in the *** species came from 54 unconsolidated sediment samples collected from the bottom of the reef with a 0.042-m^(2) van Veen *** the listed species,Curveulima sp.,Notarchus *** Guyanella clenchi are new records for the South Atlantic,while Caecum metamorphosicum,Eratoidea janeiroensis,Volvarina serrei,Solemya notialis,Solariorbis shimeri,and Amphithalamus glabrus are endemic to Brazilian waters.A comparison of our results with those obtained in other reef environments indicates that the Abrolhos Parcel has a rich malacofauna and suggests that many more species can still be found with more samplings.

关键词： Bivalvia Gastropoda micromolluscs Scaphopoda Solenogastres southwest Atlantic

Credit granting sorting model for financial organizations

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Financial Innovation 2022年第1期8卷 307-330页

作者： Paulo Cesar Schotten Leydiana de Sousa pereira danielle costa Morais CDSID-Center for Decision Systems and Information Development Universidade Federal de PernambucoAv.Acadêmico Hélio Ramoss/n–Cidade UniversitáriaRecifePE CEP 50.740-530Brazil

Considering the environment of risks and influences inherent in the decision-making process for credit-granting operations,it has become a matter of survival for financial organizations to seek to improve how they engage in effective decision-making to ensure that their returns on invested capital will meet the expectations established at the beginning of the process.A credit-granting sorting model for financial organizations is *** model aggregates the perspectives of different decision-makers to support an organization in the process of credit analysis and,consequently,to improve its *** decision-making model is based on the ELECTRE TRI-B multicriteria *** sorts credit-granting proposals into three classes,namely credit approved,technical analysis,and credit *** group decision emerges from the decision rules of the organization’s executive *** new proposed approach to dealing with credit-granting results in the systematization of credit analysis,reduction of doubt among decision-makers,avoidance of the emergence of informal groups,reduction of conflicts within a financial organization,and external interferences.

关键词： Credit granting ELECTRE TRI-B Financial market Group decision-making Multicriteria methods

Microbial enzymatic stoichiometry and the acquisition of C, N,and P in soils under different land-use types in Braziliansemiarid

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Soil Ecology Letters 2023年第3期5卷 101-108页

作者： Erika Valente de Medeiros Érica de Oliveira Silva Gustavo pereira Duda Mario Andrade Lira Junior Uemeson Josédos Santos Claude Hammecker Diogo Paes da costa Fabio Fernando Araujo Arthur Prudêncio de Araujo pereira Lucas William Mendes Ademir Sergio Ferreira Araujo Laboratory of Microbiology and Enzymology-LEMA Federal University of Agreste PernambucoGaranhuns 55292-270Brazil Federal Rural University of Pernambuco Rua Dom Manuel de Medeiross/nDois Irmãos52171-900RecifeBrazil Soil-Agrosystem-Hydrosystem Interaction Lab-LISAH Place Pierre Viala234060 MontpellierFrance Universidade do Oeste Paulista Presidente PrudenteSPBrazil Departamento de Ciência Do Solo Universidade Federal Do CearáFortalezaCEBrazil Center for Nuclear Energy in Agriculture University of Sao PauloPiracicabaSPBrazil Soil Quality Lab Agricultural Science CenterFederal University of PiauíTeresinaPI 60049-550Brazil

This study hypothesized that different land-use affect the microbial enzymatic stoichiometry and C-,N-,and P-acquisition in Brazilian semiarid ***,the enzymesβ-glucosidase(C-acquiring enzyme),urease(N-acquiring enzyme),and acid phosphatase(P-acquiring enzyme)were assessed in soil samples collected at 0−5 and 5−10 cm depth from a tropical dry forest,a protected area with Angico,a protected area with Ipê,scrub area,and an agricultural area with *** values of C-,N-,and P-acquiring enzymes were used to calculate the enzymatic C:N,C:P,and N:P *** values of C:P and N:P ratios were higher at 0−5 cm depth,while no significant variation,between soil depth,was observed for C:N *** values of C-and N-acquiring enzymes were higher at 0−5 cm in tropical dry forest areas and Angico forest,*** all land use types,the values of vectors L and A were higher than 1°and 45°,*** study showed that both land-use and soil depth influence the enzymatic stoichiometry,showing higher values of C-and N-acquiring enzymes in native and protected forests at soil surface.

关键词： C:N:P stoichiometry tropical forests soil depth Luvisols