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Identificação, evolução e transformação de compostos de silício em uma biomassa tratada termicamente até altas temperaturas.
(Universidade Federal do Espírito Santo, 2019-02-04) Ocaris, Enrique Ronald Yapuchura; Emmerich, Francisco Guilherme; https://orcid.org/; http://lattes.cnpq.br/0914292768585767; https://orcid.org/0000-0001-5543-2968; http://lattes.cnpq.br/9450503160351035; Bueno, Thiago Eduardo Pedreira; https://orcid.org/; http://lattes.cnpq.br/5243363621794078; Dalmaschio, Cleocir Jose; https://orcid.org/0000000237735786; http://lattes.cnpq.br/5209978120430790; Schettino Junior, Miguel Angelo ; https://orcid.org/; http://lattes.cnpq.br/3366999814625339; Ardisson, Jose Domingos; Scopel, Wanderla Luis; https://orcid.org/0000000220918121; http://lattes.cnpq.br/1465127043013658
Scanning electron microscopy (SEM) coupled with X-ray dispersive energy (EDS) spectroscopy, Raman spectroscopy and X-ray diffraction (XRD) were successfully used to observe the location and morphology of silica (SiO2) phytoliths in carbonaceous materials derived from biomass and its transformation into silicon carbide (SiC) and SiO2 particles at high heat treatment temperatures (HTT). The analyzes were conducted on carbonaceous materials (chars) derived from the endocarp of babassu coconut (ECB), which naturally contains 1.6 wt.% of silica in its mineral matter. It was observed that ECB chars with HTT between 500 and 1200 °C have globular echinate morphotype SiO2 phytoliths with sizes between 12 and 16 µm; these phytoliths are mainly concentrated around the surface of the char submillimetric fibers present in the endocarp of babassu coconut and also in the general carbonaceous matrix of the material. Phytoliths are not found within the submillimetric char fibers. At the HTT of 1200 °C the phytoliths begin to rounded, and above 1300 °C HTT, most of the phytoliths decompose, part of the silicon reacts with carbon forming nanocrystalline ß-SiC (crystallite size ~ 35 nm). Another part generates numerous (tens to hundreds) amorphous or nanostructured SiO2 microand sub-microparticles (with sizes predominantly below 2 µm) are observed at sites previously occupied by phytoliths. Few rounded phytoliths survive at 1400 °C HTT, but disappear in higher HTTs (1600-2000 °C). It is likely that the ensembles of SiO2 micro- and submicroparticles observed at many sites correspond to the remaining inner remaining part of the original phytoliths whose most external SiO2 structures (at and near the surface) decompose and participate in the carbothermic reaction for the formation of SiC. In addition, this study is complemented with the Raman spectroscopy characterization of the carbonaceous structure of the ECB heat treated samples, reporting characteristic parameters of the Raman D and G bands of carbonaceous materials
Crenças e atitudes sobre atendimentos em grupo na Atenção Básica à Saúde, no município de Vitória-ES.
(Universidade Federal do Espírito Santo, 2019-02-27) Velez, Yushiara Emily Vargas; Avellar, Luziane Zacche; https://orcid.org/; http://lattes.cnpq.br/8948015493681619; https://orcid.org/; http://lattes.cnpq.br/; Menandro, Maria Cristina Smith; https://orcid.org/; http://lattes.cnpq.br/5351297661579846; Menandro, Paulo Rogerio Meira; https://orcid.org/; http://lattes.cnpq.br/2651570325312338; Coutinho, Sabrine Mantuan dos Santos; https://orcid.org/; http://lattes.cnpq.br/7440436610120709; Saquetto, Diemerson
abstract
Utilização de técnicas de imagem de alta resolução para o estudo ultraestrutural de doenças metabólicas
(Universidade Federal do Espírito Santo, 2019-02-28) Rangel, Ludmilla Carvalho; Silva, Ian Victor; https://orcid.org/0000-0002-8541-8654; http://lattes.cnpq.br/3190067839380904; https://orcid.org/0000-0001-9885-0609 ; http://lattes.cnpq.br/7965385852267991; Almeida, Joao Carlos de Aquino; https://orcid.org/0000-0002-4059-9930; http://lattes.cnpq.br/3061079332211219; Pessoa, Claudia do O; https://orcid.org/0000-0002-4344-4336; http://lattes.cnpq.br/1305553577433058; Paula, Flavia de; https://orcid.org/0000000186792982; http://lattes.cnpq.br/7913201450663683; Vieira, Fernando Luiz Herkenhoff
abstract
Implementação de smart grids em ambientes extremos: o caso antártico
(Universidade Federal do Espírito Santo, 2019-03-25) Christo, Tiago Malavazi de; Fardin, Jussara Farias; https://orcid.org/000000034785556X; http://lattes.cnpq.br/1912113095988528; https://orcid.org/; http://lattes.cnpq.br/; Alvarez, Cristina Engel de; https://orcid.org/0000000238988515; http://lattes.cnpq.br/5240388600131197; Rocha, Helder Roberto de Oliveira; https://orcid.org/000000016215664X; http://lattes.cnpq.br/8801325729735529; Arioli, Fernanda Caseno Trindade; https://orcid.org/; http://lattes.cnpq.br/; Salles, Jose Leandro Felix; https://orcid.org/0000000234176544; http://lattes.cnpq.br/1368496315730875; Co, Marcio Almeida
abstract
Na saúde e na imprensa: avaliação do Programa Mais Médicos no Sistema Único de Saúde
(Universidade Federal do Espírito Santo, 2019-06-07) Emerich, Tatiana Breder; Oliveira, Adauto Emmerich; https://orcid.org/; http://lattes.cnpq.br/1534956621971641; https://orcid.org/; http://lattes.cnpq.br/; Sarti, Thiago Dias; https://orcid.org/0000000215456276; http://lattes.cnpq.br/7489127535403969; Cavaca, Aline Guio; https://orcid.org/; http://lattes.cnpq.br/; Andrade, Maria Angelica Carvalho; https://orcid.org/0000000236906416; http://lattes.cnpq.br/5427520110626795; Reboucas, Jose Edgard; https://orcid.org/0000000311025396; http://lattes.cnpq.br/2062758351699124
abstract
Efeitos de 4 dias de sobrecarga de frutose sobre a reatividade vascular de ratos machos e fêmeas
(Universidade Federal do Espírito Santo, 2019-06-25) Filho, Gilson Bras Broseghini; Padilha, Alessandra Simao; https://orcid.org/0000-0002-9585-1347; http://lattes.cnpq.br/7658998034219799; https://orcid.org/0000-0003-1626-5356; http://lattes.cnpq.br/9684390511214928; Baldo, Marcelo Perim; https://orcid.org/0000-0002-7673-3580; http://lattes.cnpq.br/7820422119282248; Pereira, Camila Almenara Cruz; https://orcid.org/0000-0001-7889-4161; http://lattes.cnpq.br/3103606418826712; Moraes, Erica Aguiar; https://orcid.org/0000000312231466; http://lattes.cnpq.br/3303337023124129; Santos, Leonardo dos; http://lattes.cnpq.br/4132087001362623; Figueiredo, Suely Gomes de; https://orcid.org/0000000253638329; http://lattes.cnpq.br/5470652664331084
Once fructose consumption increased in the last decades, also increased the concerns about its effects upon the organism. It is already known that the chronic consumption of fructose induces metabolic disorder such as hyperglycemia and dyslipidemias, and these factors are strongly correlated with vascular disfunction. Due to fructose lipogenic potential, the high fructose diet was adopted by the scientific community as a model of metabolic dysfunction which allowed investigate how factors as hypertriglyceridemia and hyperglycemia are correlated to cardiovascular diseases. Thus, there is a need to determine whether fructose de per si has its own responsibility upon the vascular changes observed in this model, regardless of the metabolic scenario that it imposes. In order to verify if the vascular alterations observed during long-term fructose supplementation precede fructose-induced dyslipidemia, hyperglycemia, and insulin resistance; to establish the role of endothelium and perivascular adipose tissue in vascular modulation after fructose supplementation; and to assay whether the early vascular changes are sex dependent, we supplemented rats of both sexes for 4 days with 10% fructose solution via drinking water to assess vascular reactivity of aortas before the scenario of metabolic syndrome consolidated by prolonged use of fructose. Our data revealed that the consumption of fructose during 4 days promotes a reduction of vasoconstricting response to phenylephrine in aortas from female rats when without perivascular adipose tissue (rmax female CT = 116±2 Vs FR = 90±2*, %KCl, *=p<0,05 vs CT), despite do not chance it in aortas from male rats (rmax male CT = 85±3 Vs FR = 81±3, %KCl). We have also shown that the effects of fructose are different between male and female, recruiting the endothelium for fructose action upon the female aorta and the perivascular adipose tissue with regard to the reduction of vascular reactivity observed in males (rmax male+PVAT CT = 92±4 Vs FR = 69±5*, %KCl, *=p<0,05 vs CT). Moreover, males were more susceptible than females to the metabolic changes induced by fructose consumption, because although fasting glycemia was not altered in both sexes, insulin resistance and serum parameters such as VLDL VLDL (male CT = 19±3 vs FR = 37±7*, mg/dL, *=p<0,05 vs CT) and triglycerides (machos CT = 98±16 vs FR = 188±33*, mg/dL, *=p<0,05 vs CT) were higher in that group. The data determine that the consumption of fructose for 4 days alters the vasoconstrictor response to phenylephrine in aortas differently between sexes, recruiting endothelium for its action on female aorta and PVAT with respect to the reduction of vascular reactivity observed in males. The results obtained in the present study demonstrate the importance of these variables in relation to vascular alterations induced by fructose supplementation and stimulate new studies that will explore gender differences regarding vascular function changes, focusing on endothelial modulation and the participation of perivascular adipose tissue in fructose-induced vascular changes
CERVANTES APUD BORGES: “PRESCINDIR DO PAI À CONDIÇÃO DE SERVIR-SE DELE”
(Universidade Federal do Espírito Santo, 2019-07-01) Menezes, Luciana Pena Vila Lima de; Nascimento, Jorge Luiz Do; https://orcid.org/; http://lattes.cnpq.br/5314773566668629; https://orcid.org/; http://lattes.cnpq.br/; Neves, Antonio Carlos Felix das; https://orcid.org/; http://lattes.cnpq.br/; Oliveira, Ester Abreu Vieira de; https://orcid.org/; http://lattes.cnpq.br/3293718089972581; Amaral, Sergio da Fonseca; https://orcid.org/; http://lattes.cnpq.br/9383077540938356; Dutra, Paulo Roberto de Souza; http://lattes.cnpq.br/1256149380405075
abstract
DIVULGAÇÃO DO ESTRESSE NA MÍDIA IMPRESSA DO ESPÍRITO SANTO, BRASIL
(Universidade Federal do Espírito Santo, 2019-07-01) Garcia, Atala Lotti; Neto, Edson Theodoro dos Santos; https://orcid.org/0000000273517719; http://lattes.cnpq.br/5430137427291413; https://orcid.org/; http://lattes.cnpq.br/; Franco, Fabiana Campos; https://orcid.org/; http://lattes.cnpq.br/; Belotti, Meyrielle; https://orcid.org/; http://lattes.cnpq.br/; Cavaca, Aline Guio; https://orcid.org/; http://lattes.cnpq.br/; Oliveira, Adauto Emmerich; http://lattes.cnpq.br/1534956621971641; Oliveira, Elizabete Regina Araujo de; http://lattes.cnpq.br/4671078095444887
abstract
APLICAÇÃO DE MODELOS ENERGÉTICOS DE TRANSPORTE DE SEDIMENTO NA AVALIAÇÃO DA VARIAÇÃO DA PROFUNDIDADE EM AMBIENTE COSTEIRO
(Universidade Federal do Espírito Santo, 2019-08-27) Jesus, Leonardo Carvalho de; Chacaltana, Julio Tomas Aquije; https://orcid.org/0000000324886232; http://lattes.cnpq.br/9108224414966705; https://orcid.org/; http://lattes.cnpq.br/; Buarque, Diogo Costa; https://orcid.org/000000032698520X; http://lattes.cnpq.br/8616432679482558; Moreira, Roger Matsumoto; https://orcid.org/; http://lattes.cnpq.br/; Carvalho, Nelson Violante de; https://orcid.org/; http://lattes.cnpq.br/; Reis, Jose Antonio Tosta dos; http://lattes.cnpq.br/7828468159099998
Calculation of sediment transport and seabed and coast evolution patterns are extremely complex due to the large number of physical variables involved both sediment transport and its resulting morphological changes. The sediment transport models for coast
A formação do relacionamento fraterno entre irmãos biológicos e adotivos: uma análise sob a ótica da Teoria Bioecológica.
(Universidade Federal do Espírito Santo, 2019-08-29) Nascimento, Danielly Bart do; Rosa, Edinete Maria; https://orcid.org/; http://lattes.cnpq.br/8986579157260973; https://orcid.org/; http://lattes.cnpq.br/; Trindade, Zeidi Araujo; https://orcid.org/0000000305495092; http://lattes.cnpq.br/7057133930657550; Aranzedo, Alexandre Cardoso; https://orcid.org/; http://lattes.cnpq.br/; Vargas, Elisa Avellar Mercon de; https://orcid.org/; http://lattes.cnpq.br/; Moura, Gabriella Garcia; http://lattes.cnpq.br/1207482802921000
abstract
Saúde de agricultores do Espírito Santo: a complexa relação entre produção de alimentos, exposição a agrotóxicos e risco à saúde humana
(Universidade Federal do Espírito Santo, 2019-09-06) Petarli, Glenda Blaser; Salaroli, Luciane Bresciani; https://orcid.org/0000000218810306; http://lattes.cnpq.br/3503255904138561; https://orcid.org/0000-0002-6828-1238; http://lattes.cnpq.br/9303477165627828; Nunes, Bruno Pereira; https://orcid.org/0000-0002-4496-4122; http://lattes.cnpq.br/9657804781475201; Neto, Edson Theodoro dos Santos; https://orcid.org/0000000273517719; http://lattes.cnpq.br/5430137427291413; Faria, Neice Muller Xavier; https://orcid.org/0000-0002-8135-5860; http://lattes.cnpq.br/; Zandonade, Eliana; http://lattes.cnpq.br/0983533134908583; Viana, Maria Carmen Moldes; http://lattes.cnpq.br/4338126917250074
Introduction: Agricultural work often poses potential health hazards for rural workers, such as increasing exposure to pesticides. The transformations resulting from the mechanization and modernization of agricultural activities also had an impact on the physical, psychological and lifestyle aspects of these workers. Objectives: To assesss occupational exposure to pesticides, risk perception, safety practices along with factors associated with the use of Personal Protective Equipment (PPE) by farmerworkers, as well as to determine the prevalence of multimorbidity, complex multimorbidity and depression in this population. Methodology: This is a cross-sectional analytical epidemiological study conducted with 790 farmerworkers in the municipality of Santa Maria de Jetibá/ES. Data collection took place beyween December 2016 and April 2017. A semi-structured questionnaire was used to collect sociodemographic data, occupational contact with pesticides, lifestyle, clinical condition and job satisfaction. Anthropometric, biochemical and hemodynamic measurements were also undertaken Depressive episodes were identified through the Mini-International Neuropsychiatric Interview. Multimorbidity was defined as the presence of two or more chronic diseases in the same individual and using the complex multimorbidity concept . Results: 106 brands of pesticides, 45 chemical groups and 77 active ingredients were detected and glyphosate was identified as the predominant herbicide. Of the farmerworkers with direct contact with pesticides, approximately 90% reported the use of extremely toxic products, half did not read the pesticide label[s] , more than one third did not observe the grace period and 71.4% did not use PPE or misused it. Among the factors associated with non-use of these equipments are: socioeconomic class (p = 0.002), low education levels (p = 0.05), lack of technical support (p <0.001) and non-reading of labels (p <0.001). . The prevalence of multimorbidity was 41.5% (n = 328) and of complex multimorbidity 16.7% (n = 132). More than 77% of the sample had at least one chronic disease and arterial hypertension, dyslipidemia and depression were the most prevalent morbidities. 40 years or older (OR = 3.33; 95% CI = 2.06 - 5.39), previous diagnosis of pesticide poisoning (OR = 1.89; 95% CI = 1.03 - 3.44), perimeter high waist (OR = 2.82; 95% CI = 1.98 - 4.02) and poorer self-rated health (OR = 2.10; 95% CI = 1.52 - 2.91) significantly increased the chances of multimorbidity. The same associations were found for the diagnosis of complex multimorbidity. Regarding depression, 16.8% (n = 132) of the farmers presented symptoms of major depressive episode, 6% (n = 48) current depressive episode and 10.7% (n = 84) recurrent major depressive episode. The risk factors associated with this condition were: being separated / divorced or widowed (OR = 2.29; 95% CI = 1.12 - 4.70), not owning the land where they work (OR = 1.79; CI95 % = 1.10 - 2.91), job dissatisfaction (OR = 1.89; 95% CI = 1.11 - 3.23), history of pesticide poisoning (OR = 2.66; 95% CI = 1.33 - 5.34), negative self-rated health (OR = 3.14; 95% CI = 1.97 - 4.98) and previous depressive episodes (OR = 7.77; 95% CI = 3.35 - 18.04). Conclusion: Farmerworkers had prolonged occupational exposure to multiple highly toxic pesticides, and reported unsafe handling practices. A high prevalence of multimorbidity and depression was identified in these workers. Factors associated with these conditions are mostly subject to modification and control, such as excessive occupational exposure to pesticides. Sound public policies are needed to prevent, control and monitor the health status of this population.
ATUAÇÃO DE GRADIENTES DE RADIAÇÃO SOLAR NA FISIOLOGIA E BIOQUÍMICA DAS PLANTAS E NA CARACTERIZAÇÃO FÍSICA DOS FRUTOS E NA QUALIDADE DAS SEMENTES DE DOIS GENÓTIPOS DE Theobroma cacao L. (MALVACEAE)
(Universidade Federal do Espírito Santo, 2019-09-11) Seidel, Tatiane Aparecida Zorzal; Cuzzuol, Geraldo Rogerio Faustini; https://orcid.org/; http://lattes.cnpq.br/6127436626143032; https://orcid.org/; http://lattes.cnpq.br/; Silva, Diolina Moura; https://orcid.org/000000033885280X; http://lattes.cnpq.br/0341541450627705; Milanez, Camilla Rozindo Dias; https://orcid.org/; http://lattes.cnpq.br/1288447995978779; Gomes, Marcos Thiago Gaudio; https://orcid.org/; http://lattes.cnpq.br/; Arantes, Sara Dousseau; http://lattes.cnpq.br/6966978781439168
ABSTRACT ACTING OF SOLAR RADIATION GRADIENTS ON PLANT PHYSIOLOGY AND BIOCHEMISTRY AND PHYSICAL CHARACTERIZATION OF FRUIT AND SEED QUALITY OF TWO GENOTYPES OF Theobroma cacao L. (MALVACEAE) The cultivation of cacao (Theobroma cacao L.) in environments wit
Relação do clima com a alocação de carbono estrutural e não estrutural em espécies arbóreas de florestas tropicais.
(Universidade Federal do Espírito Santo, 2019-09-13) Macieira, Bernardo Pretti Becacici; Cuzzuol, Geraldo Rogerio Faustini; https://orcid.org/; http://lattes.cnpq.br/6127436626143032; https://orcid.org/; http://lattes.cnpq.br/; Mielke, Marcelo Schramm; https://orcid.org/; http://lattes.cnpq.br/; Milanez, Camilla Rozindo Dias; https://orcid.org/; http://lattes.cnpq.br/1288447995978779; Werner, Elias Terra; https://orcid.org/; http://lattes.cnpq.br/3268068963656927; Pezzopane, Jose Eduardo Macedo; https://orcid.org/0000000300244016; http://lattes.cnpq.br/3640768649683482
Tropical forests have a crucial role of the global carbon and climate cycle, cover 10 % of the surface of the Earth and store 25 % of global terrestrial carbon pool. Structural carbon pool (SC) of tree species that make up tropical forests may account 42
Caracterização da resposta mediada por células T de memoria durante a leishmaniose cutânea e mucocutânea causada por Leishmania brasiliensis
(Universidade Federal do Espírito Santo, 2019-09-20) Martins, Regia Ferreira; Gomes, Daniel Claudio de Oliveira; https://orcid.org/; http://lattes.cnpq.br/3965075540969796; https://orcid.org/; http://lattes.cnpq.br/; Schuenck, Ricardo Pinto; https://orcid.org/0000000198255762; http://lattes.cnpq.br/1211608551542058; Giunchetti, Rodolfo Cordeiro; https://orcid.org/; http://lattes.cnpq.br/; Rodrigues, Rodrigo Ribeiro; https://orcid.org/000000020675110X; http://lattes.cnpq.br/3822046497362615; Zeidler, Sandra Lucia Ventorin Von; https://orcid.org/0000000288975747; http://lattes.cnpq.br/5785612863130498
Leishmaniasis is a chronic disease with different clinical forms, which depend on the parasite species and the host's immune response. Localized Cutaneous Leishamnasis (LCL) is the most common form found in the world. Due to the importance of T-cell-media
Determinantes do absenteísmo em consultas médicas e exames especializados na Região de Saúde Metropolitana do Estado do Espírito Santo
(Universidade Federal do Espírito Santo, 2019-10-09) Farias, Cynthia Moura Louzada; Neto, Edson Theodoro dos Santos; https://orcid.org/0000000273517719; http://lattes.cnpq.br/5430137427291413; https://orcid.org/; http://lattes.cnpq.br/; Szpilman, Ana Rosa Murad; https://orcid.org/; http://lattes.cnpq.br/; Giovanella, Ligia; https://orcid.org/; http://lattes.cnpq.br/; Oliveira, Adauto Emmerich; https://orcid.org/; http://lattes.cnpq.br/1534956621971641; Carvalho, Raquel Baroni de; https://orcid.org/0000000185223577; http://lattes.cnpq.br/5266889552348216
Introduction: The non-attendance of users to appointments and procedures scheduled in the SUS has compromised the excessive demand for specialized actions. Access to health services is still disorderly and requires reorientation. Faced with the need to ra
Desenvolvimento de formulações de Spodoptera frugiperda multiple nucleopolyhedrovirus (SfMNPV): efeito da radiação ultravioleta, do armazenamento e do substrato alimentar
(Universidade Federal do Espírito Santo, 2019-10-23) Paiva, Carlos Eduardo Costa; Junior, Hugo Jose Goncalves dos Santos; https://orcid.org/0000000267806610; http://lattes.cnpq.br/8499663924650322; https://orcid.org/; http://lattes.cnpq.br/; Xavier, Andre da Silva; https://orcid.org/0000000292510301; http://lattes.cnpq.br/5661020509713522; Zago, Hugo Bolsoni; https://orcid.org/0000000319753590; http://lattes.cnpq.br/6021586329353959; Carvalho, Jose Romario de; https://orcid.org/; http://lattes.cnpq.br/; Valicente, Fernando Hercos
Rising is the industry's interest in the manufacture of microbial insecticides, including Spodoptera frugiperda multiple nucleopolyhedrovirus (SfMNPV) -based products that are effective in controlling the fall armyworm, Spodoptera frugiperda J. E. Smith (
EFEITOS DA INTERVENÇÃO HATHA-YOGA EM CUIDADORES DE CRIANÇAS E ADOLESCENTES COM CÂNCER
(Universidade Federal do Espírito Santo, 2019-11-19) Bernardi, Marina Lima Daleprane; Zandonade, Eliana; https://orcid.org/; http://lattes.cnpq.br/0983533134908583; https://orcid.org/; http://lattes.cnpq.br/; Salaroli, Luciane Bresciani; https://orcid.org/0000000218810306; http://lattes.cnpq.br/3503255904138561; Novaes, Ana Rita Vieira de; https://orcid.org/; http://lattes.cnpq.br/; Figueiredo, Tulio Alberto Martins de; https://orcid.org/; http://lattes.cnpq.br/3816682170651493; Santaella, Danilo Forghieri
Introduction: Yoga is a millenary Indian tradition that creates conditions for practitioners self-knowledge, making them become more autonomous in the search for wellbeing. In the western world, this proposal has been prospering as a practice in differen
Síntese e caracterização elétrica do composto ferroelétrico PZT 52/48 dopado com érbio
(Universidade Federal do Espírito Santo, 2019-12-12) Caceres, Jaime Alberto Sanchez; Passos, Carlos Augusto Cardoso; https://orcid.org/0000-0001-9627-7941; http://lattes.cnpq.br/2528679879816545; https://orcid.org/0000-0001-9553-1776; http://lattes.cnpq.br/2773300928152977; Franco Junior, Adonias Ribeiro ; https://orcid.org/; http://lattes.cnpq.br/6677652514776940; Aguiar, Jose Albino Oliveira de; https://orcid.org/0000-0002-2040-2301; http://lattes.cnpq.br/5602764549201959; Orlando, Marcos Tadeu D Azeredo; https://orcid.org/0000000283876504; http://lattes.cnpq.br/3562894103432242; Passamai Junior, Jose Luis ; Vieira, Estefano Aparecido
In this work, erbium-doped PZT 52/48 ceramics at sites A and B were prepared by the Pechini method for the purpose of studying their dielectric properties. Specifically, the dielectric anomalies of interfacial origin in these ferroelectrics were investigated. To determine the best sintering/densification temperature of ceramic samples, dilatometry tests were performed. These results of the tests showed that the ceramic samples presented relative densities above 95%. The samples were characterized by X-ray diffraction. The results indicated that all samples are single phase and the peaks are indexed to the tetragonal crystal structure. According to these results, there was also an increase of the parameter “a” and a reduction of the parameter “c” in relation to the undoped DZT sample. Through scanning electron microscopy, it was observed that average grain size decreased with increasing erbium content. All samples were subjected to electrical measurement analysis. The dielectric response of the grains showed characteristics of materials that follow Curie-Weiss law, typical of ferroelectrics. On the other hand, the dielectric anomaly phenomenon was observed for the responses of these materials at high temperatures and low frequencies. Impedance spectroscopy analyzes by equivalent circuit (brick-layer model) revealed a predominance of dielectric properties of intergranular interfaces as the cause of this anomaly. It was considered the layer model (grain and grain boundary) in series. The electrical characterization of our ceramics showed a peculiar ferroelectric-paraelectric phase transition around 390 °C. In addition, measurements of ferroelectric hysteresis for doped samples at sites A and B revealed that remnant polarization and coercive field values depend on erbium concentration and PbO losses. The undoped sample showed higher values of permittivity compared to erbium doped samples at both sites A and B.
Tradição, crítica e renovação na Educação Física colombiana
(Universidade Federal do Espírito Santo, 2020-02-14) Eusse, Karen Lorena Gil; Bracht, Valter; https://orcid.org/; http://lattes.cnpq.br/3097115385391111; https://orcid.org/; http://lattes.cnpq.br/; Martins, Mariana Zuaneti; https://orcid.org/; http://lattes.cnpq.br/7281518704205888; Gomes, Ivan Marcelo; https://orcid.org/; http://lattes.cnpq.br/5874951331253226; Vaz, Alexandre Fernandez; https://orcid.org/; http://lattes.cnpq.br/; Gomez, William Moreno; Giménez, Raumar Rodríguez
Esta tesis de doctorado investigó la tradición esportivista en la Educación Física colombiana. Además de caracterizarla, analizó un movimiento de crítica y renovación de la Educación Física en este país. La tesis fue organizada en 9 capítulos, antecedidos
RESISTÊNCIA À SECA EM SOJA: DESEMPENHO AGRONÔMICO, RESPOSTAS FISIOLÓGICAS, CAPACIDADE DE RESILIÊNCIA E PARÂMETROS GENÉTICOS
(Universidade Federal do Espírito Santo, 2020-03-13) Castro, Leonardo Humberto Silva e; Cavatte, Paulo Cezar; https://orcid.org/; http://lattes.cnpq.br/8029279967950425; https://orcid.org/; http://lattes.cnpq.br/; Silva, Josimar Aleixo da; https://orcid.org/; http://lattes.cnpq.br/; Garbin, Mario Luis; https://orcid.org/; http://lattes.cnpq.br/; Soares, Tais Cristina Bastos; https://orcid.org/0000000163567993; http://lattes.cnpq.br/6580031598802359
The soybean crop is highly strategic both from the production and food point of view. However, with climate change, drought events occur along the productive cycle, which are highly impactful on grain yield. The plants can express agronomic and physiologi

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