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Journal of Rare Earths 2022年第2期40卷 260-267,I0003页

作者： Alexandre Candido Teixeira ivan guide nunes silva Alysson Ferreira Morais Danilo Mustafa Physics Institute.University of Sao Paulo 05508-090Sao PauloSPBrazil

While the versatile composition of layered double hydroxides(LDHs)allows the introduction of almost any polyvalent cation in their structure,the exchangeable negatively charged ions intercalated between the plates increase their vast range of *** we report on the preparation and optical properties of pillared Eu^(3+)-substituted ZnAl LDHs intercalated by aliphatic dicarboxylates:-OOC-(CH_(2))_(n-2)-COO-.The basal distance in these materials is dependent on the size and packing of the intercalated *** varying the number(n)of carbon atoms in the aliphatic chain from 2 to 12,the interlayer gallery of these ZnAlEu LDHs is considerably expanded from 0.9 to 2.1 *** the interlayer gallery,the aliphatic dicarboxylates form a monolayer,with the aliphatic chain inclined by an angleα≈63°with the hydroxide *** carbon atom in the COO-group is 0.43 nm far from the metal plane,showing that these carboxylates are not grafted in the brucite-like *** LDHs are thermally stable up to around 150℃,after which dehydroxylation of the hydroxide layers is *** Judd-Ofelt intensity parameters were obtained and compared to the Eu^(3+)-containing complexes with the same ligand series indicating a more symmetrical and less polarizable chemical environment around the rare earth ion.

关键词： Europium Layered double hydroxides Carboxylate ligands Luminescence Rare earths

Anti-inflammatory and antinociceptive activities of Rhipicephalus microplus saliva

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Asian Pacific Journal of Tropical Biomedicine 2018年第4期8卷 194-200页

作者： DF.Buccini AA.nunes GGO.silva ON.silva OL.Franco SE.Moreno Programa de Pos-Graduacao em Biotecnologia e Biodiversidade Universidade Federal do Mato Grosso do Sul S-Inova Biotech Programa de Pos-Graduacao em Biotecnologia Universidade Catolica Dom Bosco Programa de Pos-Graduacao em Patologia Molecular Universidade de Brasilia Centro de Analises Proteomicas e Bioquimicas Programa de Pos-Graduacao em Ciencias Genomicas e Biotecnologia Universidade Catolica de Brasilia

To evaluate the antinociceptive and anti-inflammatory activities and the toxic effects of Rlhipicephalus microplus saliva for elucidating the modulation mechanism between arthropod saliva and ***:For saliva collection,engorged ticks were obtained from a controlled bovine infestation and collected by natural *** ticks were fixed and injected pilocarpine 0.2%for induction of *** was collected,lyophilized and stored at-80℃.Cytotoxic activity was assessed by the hemolysis method(25,50,100,200 and 300μg/mL)and MTT cell viability assay(2.5,5,10,20 and 40μg/mL)for 24,48 and 72 ***-inflammatory activity was evaluated using the method of neutrophil migration to the peritoneal cavity of mice at doses of l0,15 and 20 mg/kg;antinociceptive activity was assessed using the acetic acid-induced writhing test,and formalin-induced paw-licking in mice at dose of 15 mg/***:Saliva did not cause erythrocytes hemolysis at any concentration tested,as well as did not decrease cell viability in the MTT *** inhibited neutrophil migration by 87%and 73%at doses of l5 and 20 mg/kg,*** the nociceptive tests,saliva presented analgesic activity of69.96%in the abdominal writhing test,and of 84.41%in the formalin *** study proves that Rlhipiceplhalus microplus saliva has significant in vivo anti-inflammatory and antinociceptive *** data presented herein support the development of further studies to elucidate the active principles of Rhipicephalus microplus saliva and its mechanism of action and,in future,to develop novel anti-inflammatory and analgesic drugs.

关键词： Rhipicephalus microplus Saliva Tick Antinociceptive Anti-inflammatory

Effect of radiative loss mechanisms on FIR thermometric parameters of Nd^(3+)-doped lithium tellurite glasses

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Journal of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： C.Y.Morassuti A.P.L silva L.A.O.nunes S.M.Lima L.H.C.Andrade Optical and Photothermal Spectroscopy Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Archer Information Technology Center Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Physics of São Carlos University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tellurite glasses are promising materials for thermometers based on the fluorescence intensity ratio(FIR)***,at high Nd^(3+)concentrations,energy transfer(ET)processes such as optical reabsorption and cross-relaxation can affect the Nd^(3+)emission,which has been little explored in the ***,the present work investigated the use of Nd^(3+)-doped tellurite glass(samples doped with Nd^(3+)at 0.2 mol%,0.5 mol%,2.0 mol%,and 4.0 mol%)in fluorescence thermometers,in the temperature range from 299 to 371 *** results indicate a strong dependence of the FIR parameters on the Nd^(3+)concentration,due to changes in the emission band profiles caused by optical reabsorption of the Nd^(3+)emissions and cross-relaxation processes.A decrease of the relative sensitivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for samples doped with higher amounts of Nd^(3+).The maximum relative sensitivity at 299 K is 3.00%/K,which is the highest value among the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tellurite glass Fluorescence intensity ratio Optical thermometry Judd-Ofelt Rare earths

Prevalence and factors associated with stages of behavior change for physical activity in adolescents:a systematic review

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World Journal of Pediatrics 2017年第3期13卷 202-209页

作者： Heloyse Elaine Gimenes nunes Diego Augusto Santos silva Eliane Cristina de Andrade Gon(c)alves Federal University of Santa Catarina Post-Graduate Program in Physical EducationFlorianópolisSanta CatarinaBrazil

Background:To analyze prevalence and factors associated with stages of behavior change for physical activity in *** sources:A search was performed in SciELO,PubMed,PsycINFO,SPORTDiscus and *** search terms were 'behavior change' OR 'stages of change' OR 'stages of readiness' OR 'readiness to change' OR 'transtheoretical model' OR 'process to change' OR 'decisional balance',and 'motor activity' OR 'physical activity' OR 'physical exercise' and 'adolescent' OR 'students'.After the eligibility criteria,18 articles were ***:The highest prevalence of adolescents in the precontemplation,contemplation,and preparation stages was found in the Germany,South Korea,and Iran while there were more adolescents in the action and maintenance in South Korea and *** evidence of association indicated that females are more likely to be in precontemplation,contemplation and *** evidence was inconclusive for age (in relation to the precontemplation,contemplation,action and maintenance stages),economic status (all stages),shift of study (when stratified by gender) and body composition (all stages).No association was found with parental level of ***:The findings can help to guide interventions and further research on the topic of behavior changes for physical activity in adolescents.

关键词： adolescent behavior motor activity students transtheoretical model

Characterization of porous cobalt hexacyanoferrate and activated carbon electrodes under dynamic polarization conditions in a sodium-ion pseudocapacitor

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Journal of Energy Chemistry 2021年第3期30卷 53-62页

作者： Bruno Morandi Pires Willian Goncalves nunes Bruno Guilherme Freitas Francisca Elenice Rodrigues Oliveira Vera Katic Cristiane Barbieri Rodella Leonardo Morais Da silva Hudson Zanin Advanced Energy Storage Division Manufacturing CroupCarbon Sci-Tech LabsCenter for Innovation on New EnergiesUniversity of CampinasCampinas 13083-852SPBrazil Brazilian Synchrotron Light Laboratory(LNLS/Brazilian Center of Energy and Materiab(CNPEM)) Campinas 13083-970SPBrazil Department of Chemistry Laboratory of Fundamental and Applied ElectrochemistryFederal University of Jequitinhonha and Mucuri's VatleyAlto dajacuba 39100-000Diamantina-MGBrazil

We report here the activated carbon and cobalt hexacyanoferrate composite,which is applied as the electrode materials in symmetric supercapacitors containing a 1.0 M Na_(2)SO_(4) aqueous *** novel material combines high specific surface area and electrochemical stability of activated carbon with the redox properties of cobalt hexacyanoferrate,resulting in maximum specific capacitance of 329 F g^(-1) with large voltage working window of 2.0 *** studies indicated that cobalt hexacyanoferrate introduces important pseudocapacitive properties accounting for the overall charge-storage process,especially when I<0.5 A g^(-1).At lower gravimetric currents(e.g.,0.05 A g^(-1))and up to 1.0 V,the presence of cobalt hexacyanoferrate improves the specific energy for more than 300%.In addition,to better understanding the energy storage process we also provided a careful investigation of the electrode materials under dynamic polarization conditions using the in situ Raman spectroscopy and synchrotron light Xray diffraction *** complementary findings were obtained in these *** believe that this novel electrode material is promising for applications regarding the energy-storage process in pseudocapacitors with long lifespan properties.

关键词： Operando studies Raman XRD synchrotron light Cobalt hexacyanoferrate Activated carbon High specific capacitance

Monkeypox:A looming concern for children?

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Asian Pacific Journal of Tropical Medicine 2022年第8期15卷 335-336页

作者： Claudio Bruno silva de Oliveira Joelma Maria de Araújo Andrade Jonas ivan Nobre Oliveira Pediatric Hospital Maria Alice Fernandes NatalRio Grande do NorteBrazil Blood Center Dalton Cunha NatalRio Grande do NorteBrazil Federal University of Rio Grande do Norte Department of Biophysics and PharmacologyNatalRio Grande do NorteBrazil

Several countries around the world have followed the growing number of monkeypox(MPX) cases with concern, as they are still very sensitive to fears of a new tragic pandemic, as was the case with COVID-19. This alarm has been prolonged since May 2022[1,2], when the current outbreaks of the disease were observed in several countries outside the area normally associated with the circulation of the causative virus, monkeypox virus(MPXV).

关键词： outside cases monkey

Engineering Improved Photosynthesis in the Era of Synthetic Biology

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Plant Communications 2020年第2期1卷 1-17页

作者： Willian Batista-silva Paula da Fonseca-Pereira Auxiliadora Oliveira Martins Agustin Zsogon Adriano nunes-Nesi Wagner L.Araujo Departamento de Biologia Vegetal Universidade Federal de Vic¸osaVic¸osaMinas Gerais 36570-900Brazil

Much attention has been given to the enhancement of photosynthesis as a strategy for the optimization of crop *** traditional plant breeding is most likely reaching a plateau,there is a timely need to accelerate improvements in photosynthetic efficiency by means of novel tools and biotechnological *** emerging field of synthetic biology offers the potential for building completely novel pathways in predictable directions and,thus,addresses the global requirements for higher yields expected to occur in the 21st ***,we discuss recent advances and current challenges of engineering improved photosynthesis in the era of synthetic biology toward optimized utilization of solar energy and carbon sources to optimize the production of food,fiber,and fuel.

关键词： photosynthesis synthetic biology genetic engineering yield improvement targeted manipulation

Fishermen and Territorial Trends in the Brazilian Fisheries Policies

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International Journal of Geosciences 2015年第4期6卷 339-349页

作者： Christian nunes da silva Eduardo Schiavone Cardoso Federal University of Pará (UFPA) Belém Brazil Federal University on Santa Maria (UFSM) Santa Maria Brazil

The fishing activity has been known for centuries by man and is configured as an important source of livelihood and income for many families of Brazilian fishermen. This article tries to do a brief contextualization of fishing in Brazil, as well as discuss the notion of territoriality of sector policies. The trend shown for the future is the need for a planning/mapping of operation areas of productive agents in the country, so that fish stocks can be managed more appropriately. One of the proposals that comes with acceptance and is already being applied in some municipalities is fishing agreements, using co-management mechanisms for planning and use of fisheries resources.

关键词： Fishing and Fishermen Colony of Fishermen Brazil Agreements

The Cartography and the Spatial Representations:Search by Perfect Map

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Journal of Geographic Information System 2014年第6期6卷 624-635页

作者： Christian nunes da silva Joao Marcio Palheta da silva Clay Anderson nunes Chagas Carlos Jorge Nogueira Castro Federal University of Para(UFPA) BelemBrazil

The activities of the professionals working on cartographic products have been highlighted especially in recent years. The history, the concepts and categories of cartography cannot be neglected in using this type of tool since the use of elements that make a cartographic product, as an example: map, chart, plan, globe, and a scale model should be used since the unawareness of techniques of cartography and the absence of the components of a map may hinder the understanding of what is intended to represent cartographically. This text is a contribution to the discussion of advances in cartography including errors and absence of maps, including a brief discussion of the characteristics of cartographic language nowadays and the search for perfection in cartography.

关键词： Cartography Cartographic Evolution Geographic Space Spatial Representations Perfect Map

Geography and Mining in Carajas/Para(Northern Region of Brazil)

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International Journal of Geosciences 2014年第12期5卷 1426-1434页

作者： Joao Marcio Palheta da silva Christian nunes da silva Clay Anderson nunes Chagas Glaucia Rodrigues Nascimento Medeiros Federal University of Para (UFPA)BelemBrazil

This essay examines the actions of Major Mining Projects in the region of Carajás, the state of Pará, Northern Brazil, which concentrates the projects of one of the largest mining companies of the Planet, the Vale Group, and the relations of power and authority in land use in the corresponding area to the former city of Marabá. The territories exploited by major mining projects, also increase land use that has not been translated into socio-economic development, and add little value to labor and the product. Another issue is lack of a National Mining Policy that truly establishes the regional supply chains, and conducts the multiplier effects to produce new territorial jurisdictions. Mining contributes to socio-economic development of the Amazon region, especially in the Carajás region and promotes the economic organization of the territories for the consolidation of municipalities in which society in its favor uses natural resources. The main objective of this paper is to present the main impacts caused by mining activities in Pará municipalities. Textual elaboration was necessary documentary and bibliographical analysis, in addition to field research in the study area. We can observe, that mining is an important productive activity, but has caused significant changes in Pará territory, both in economy and in the environment, and the way of life of local populations.

关键词： Territory Mining Amazon Carajas