230 results on '"José, Holanda"'
Search Results
2. Exploring the effects of ultraviolet radiation on the properties of Fe3O4/PANI nanostructures
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Luana Hildever, Thiago Ferro, Francisco Estrada, and José Holanda
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Ultraviolet ,Radiation ,Nanostructures ,Magnetic properties ,Technology - Abstract
The properties of any material are the basis for the most diverse applications of science, which allows for the dazzling development of new technologies. In this work, we present a new method of synthesis of Fe3O4/PANI nanostructures using ultraviolet radiation. We show that the nanostructures produced by our method have exceptional properties, evidenced by the high stability and quality of the nanostructures. Among the highly stable properties, the magnetic ones stand out, where the nanostructures have high coercivity and remanence, in addition to a well-defined saturation magnetization. Such characteristics of this type from nanostructure indicate the method is promising for producing thin films with high stability and excellent magnetic and conductive properties.
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- 2024
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3. Melioidose em adolescente com diabetes mellitus tipo 1 com coinfecção por COVID-19: Relato de caso clínico
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Diane Gomes Pontes, Ana Julia Velozo Ribeiro, José Holanda Maia Filho, Ângela Elizabeth de Holanda Araújo Freita, and Vivianne Calheiros Chaves Gomes
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melioidosis ,adolescent ,burkholderia pseudomallei covid-19 ,Pediatrics ,RJ1-570 - Abstract
Melioidosis is a rare and potentially fatal infection, emerging in Brazil and endemic in Ceará, caused by the bacterium Burkholderia pseudomallei, which requires a high index of clinical suspicion for its diagnosis. It can manifest acutely, chronically or latently and, in general, in symptomatic patients there is sepsis with or without pneumonia. Diabetes mellitus is the main known risk factor. We present the case of a diabetic adolescent diagnosed with septicemic melioidosis and co-infection with COVID-19.
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- 2023
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4. Experimental Observation of a Magnetic Interfacial Effect
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Wibson W. G. Silva, Sérgio V. B. Degiorgi, and José Holanda
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interfaces ,magnetic ,noncollinear ,uncompensated ,Physics ,QC1-999 ,Technology - Abstract
Abstract A magnetic interfacial effect is observed due to the coupling between two surfaces of different materials. The studied interface is a noncollinear antiferromagnet and a quasi‐ferromagnet. The effect is measured using the ferromagnetic resonance technique without and with electric current and unequivocally proved its existence.
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- 2023
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5. Adaptation, calibration, and validation of the agro-ecological zone model for Urochloa humidicola pastures
- Author
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Jholian Maicon Ribeiro Santos, José Holanda Campelo Júnior, Osvaldo José de Oliveira, and Jéssica de Souza
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Tropical forage ,Agrometeorological modeling ,Income simulation ,Agriculture (General) ,S1-972 - Abstract
ABSTRACT The agro-ecological zone model (AZM-FAO) is used to describe agricultural scenarios and the impact of climate risk on crops and, when adapted, can be used to simulate the yield of forage species under adverse conditions. The study aimed to test the performance of the AZM-FAO model to simulate the yield of Urochloa humidicola grass in Mato Grosso. The model was adapted for two locations with different soil and climate conditions, with data from two experiments (E1 and E2). The morphophysiological variables of the pastures, the physical-hydric variables of the soil, and the meteorological data of the experimental period were analyzed. The model calibration was based on changes in the yield response coefficient to water (Ky) and the minimization of deviations between simulated and observed data. The model presented a satisfactory performance for the two analyzed locations. In experiment E1, the RMSE was 29.86% (acceptable), and the c index was 0.86 (optimal) in the calibration phase, maintaining the same results in the validation. In E2, there was an improvement in the performance of the model, with RMSE and c index going from 30.74% (poor) and 0.84 (very good) in the calibration to 17.50% (good) and 0.92 (very good) in the validation step, respectively. The AZM-FAO model adapted for Urochloa humidicola grass can be used with good accuracy to simulate the forage yield of this forage in the southern region of Mato Grosso.
- Published
- 2023
- Full Text
- View/download PDF
6. DIAGNÓSTICO DO ABDOME AGUDO: UMA REVISÃO DE LITERATURA
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Berticelli, Isadora Donin, primary, Mesquita, Rafaela Carlos do Amaral Braga, additional, Araújo, Ruth da Conceição, additional, Caetano, Stéphani Garcia, additional, Caetano, Jéssica Garcia, additional, Mota, Rodrigo Miranda, additional, Alvim, David Capachi, additional, Guimarães, Alana Sales, additional, Mizuno, Fábio da Silva, additional, Neto, Christovam Abdalla, additional, Silva, Graziela Giongo da, additional, Cavalcanti, Lívia Ayres de Miranda, additional, Silva, Paulina Gomes da, additional, Junios, Renato Gonçalves dos Santos, additional, Cardoso, Ruhanna Tabatinga, additional, Costa, Antônio José Holanda da, additional, Silva, Larissa Ruthyely dos Anjos, additional, and Peixoto, Mabel Emilião, additional
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- 2024
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7. Clinicopathological characteristics of odontogenic carcinosarcoma: A systematic review
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da Silveira, Karoline Gomes, primary, Montenegro, Luiza de Almeida Souto, additional, de Albuquerque, Diana Santana, additional, do Lago, Carlos Augusto Pereira, additional, Laureano Filho, José Rodrigues, additional, and de Vasconcellos, Ricardo José Holanda, additional
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- 2024
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8. Determinação das Temperaturas Cardinais de Frutos de Cajueiros Utilizando um Modelo Não Linear de Desenvolvimento
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Victor Arlindo Taveira de Matos, Thiago Franco Duarte, Fernando Pivetta, and José Holanda Campelo Júnior
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Anacardium occidentale ,L. ,Wang e Engel ,Temperatura do ar ,Temperatura basal ,Meteorology. Climatology ,QC851-999 - Abstract
Resumo O objetivo nesse estudo foi determinar as temperaturas cardinais de três clones de cajueiro anão utilizando um modelo não-linear de desenvolvimento para estimar a etapa fenológica de amadurecimento dos seus frutos. Entre agosto de 2010 e agosto de 2012, identificou-se semanalmente até dez frutos jovens por clone, acompanhando-os até amadurecerem. A taxa de desenvolvimento dos frutos foi obtida com o modelo de Wang e Engel, utilizando três aproximações da temperatura do ar de Santo Antônio de Leverger/MT (15°51’ S e 56°04’ O, 140 m). Os frutos marcados durante os meses de maio a julho requereram um tempo maior, aproximadamente 44 dias para amadurecerem devido aos menores valores de temperatura do ar ocorridos nesse período, com uma média compensada de 23,0 °C. Contudo, os frutos marcados entre agosto e outubro, período com maior média compensada do ar, de aproximadamente 26,6 °C necessitaram de um tempo menor, 37 dias. As temperaturas cardinais variaram de: 14,0 a 17 °C, 27,5 a 32,5 °C e 33,0 a 41,5 °C para a temperatura base inferior, ótima e base superior, respectivamente.
- Published
- 2020
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9. MARKETING VERDE DE PRODUTOS FLORESTAIS: UMA PERCEPÇÃO DOS DISCENTES DO CURSO DE ENGENHARIA FLORESTAL NO ESTADO DE ALAGOAS, BRASIL
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Oliveira, Amanda Freitas de, primary, Costa, Ewerson Bruno de Albuquerque, additional, Lima, Jasiel Firmino de, additional, Leal, Mariana da Silva, additional, Lima, Aline Evelle da Silva, additional, Silva, Carolina Rafaela da, additional, Pinto, Andrea de Vasconcelos Freitas, additional, Brandão, Carlos Frederico Lins e Silva, additional, Lana, Mayara Dalla, additional, Ribeiro, Pollyanna Roberta Santa Cruz, additional, Leite, Maria José Holanda, additional, and Pimentel, Diogo José Oliveira, additional
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- 2020
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10. One analytical approach of Rashba–Edelstein magnetoresistance in 2D materials
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Wibson W. G. Silva and José Holanda
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Condensed Matter - Materials Science ,Materials Science (cond-mat.mtrl-sci) ,FOS: Physical sciences ,Condensed Matter Physics ,Electronic, Optical and Magnetic Materials - Abstract
We study analytically the Rashba-Edelstein magnetoresistance (REMR) in a structure made from an insulator ferromagnet, such as yttrium iron garnet (YIG), and a 2D material (2DM) with direct and inverse Rashba-Edelstein effects, such as SLG and MoS$_2$. Our results represent an efficient way of analyzing the Rashba-Edelstein effects.
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- 2023
11. Dung beetles of Brazilian pastures and key to genera identification (Coleoptera: Scarabaeidae)
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Ana Silvia de Oliveira Tissiani, Fernando Zagury Vaz-de-Mello, and José Holanda Campelo-Júnior
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biological control ,coprophagous beetles ,dichotomous key ,Scarabaeinae ,taxonomy ,Agriculture (General) ,S1-972 - Abstract
Abstract: The objective of this work was to elaborate supporting tools for the correct identification of Scarabaeidae, by an identification key of genera, and a commented list of the species present in Brazilian pastures. A data survey was performed on the specimens deposited in the main Brazilian collection and reported on the recent scientific literature. The distribution of the species was identified in the Brazilian states, based on information on feeding preference, ecological aspects, and potential for faeces removal action. The species were classified according to their importance for pastures, as: high, medium, and low. A key for the identification of the genera and subgenera of Scarabeidae present in the pastures was constructed through the analysis of the external morphology of the species and, when needed, by the analysis of sexual traits. Twenty genera and 76 species of scarab beetles were recorded for Brazilian pasturelands, among which Dichotomius bos, Dichotomius nisus, Trichillum externepunctatum, Ontherus appendiculatus, Onthophagus aff. hirculus, and Digitonthophagus sp. were considered as the most frequent, widely distributed, abundant, and important. The dichotomous key will contribute to the identification of the genera and subgenera of dung beetles (Scarabaeidae: Scarabaeinae) occurring in the Brazilian pastures.
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- 2017
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12. DEFINING MANAGEMENT ZONES BASED ON SOIL ATTRIBUTES AND SOYBEAN PRODUCTIVITY
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FABRICIO TOMAZ RAMOS, RAUL TERUEL SANTOS, JOSÉ HOLANDA CAMPELO JÚNIOR, and JOÃO CARLOS DE SOUZA MAIA
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Agriculture ,Biology (General) ,QH301-705.5 - Abstract
Demarcating soil management zones can be useful, for instance, delimiting homogeneous areas and selecting attributes that are generally correlated with plant productivity, but doing so involves several different steps. The objective of this study was to identify the chemical and physical attributes of soil and soybean plants that explain crop productivity, in addition to suggesting and testing a methodological procedure for defining soil management zones. The procedure consisted of six steps: sample collection, data filtering, variable selection, interpolation, grouping, and evaluation of management zones. The samples were collected in an experimental area of 12.5 ha cultivated with soybean during the 2013/14 crop in Dystrophic Red Latosol, in Mato Grosso, Brazil. A total of 117 pairs of plant and soil samples were collected. Student’s t - test was used ( α = 0.02) to verify that the number of samples was adequate for correlation analysis. Results showed that only the P and Mn content in the grains explained (based on R 2 values) the variation in soybean grain productivity the area. Based on the interpolation of these contents by ordinary kriging, the fuzzy C - means algorithm was used to separate them into groups by similarity. Division into two groups was the best option, which could be differentiated by Mann – Whitney test (P < 0.05), resulting in a map with 10 management zones.
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- 2017
13. Adaptação, calibração e validação do modelo da zona agroecológica para pastagens de Urochloa humidicola
- Author
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Santos, Jholian Maicon Ribeiro, Campelo Júnior, José Holanda, Oliveira, Osvaldo José de, and Souza, Jéssica de
- Subjects
Modelagem agrometeorológica ,Agrometeorological modeling ,Forrageira tropical ,Simulação do rendimento ,Tropical forage ,Income simulation - Abstract
The agro-ecological zone model (AZM-FAO) is used to describe agricultural scenarios and the impact of climate risk on crops and, when adapted, can be used to simulate the yield of forage species under adverse conditions. The study aimed to test the performance of the AZM-FAO model to simulate the yield of Urochloa humidicola grass in Mato Grosso. The model was adapted for two locations with different soil and climate conditions, with data from two experiments (E1 and E2). The morphophysiological variables of the pastures, the physical-hydric variables of the soil, and the meteorological data of the experimental period were analyzed. The model calibration was based on changes in the yield response coefficient to water (Ky) and the minimization of deviations between simulated and observed data. The model presented a satisfactory performance for the two analyzed locations. In experiment E1, the RMSE was 29.86% (acceptable), and the c index was 0.86 (optimal) in the calibration phase, maintaining the same results in the validation. In E2, there was an improvement in the performance of the model, with RMSE and c index going from 30.74% (poor) and 0.84 (very good) in the calibration to 17.50% (good) and 0.92 (very good) in the validation step, respectively. The AZM-FAO model adapted for Urochloa humidicola grass can be used with good accuracy to simulate the forage yield of this forage in the southern region of Mato Grosso. RESUMO O modelo da zona agroecológica (MZA-FAO) é utilizado para descrever cenários agrícolas e o impacto do risco climático sobre as culturas e, quando adaptado, pode ser utilizado para simular o rendimento de espécies forrageiras em condições adversas. Objetivou-se testar o desempenho do modelo MZA-FAO para simular o rendimento do capim Urochloa humidicola no Mato Grosso. O modelo foi adaptado para duas localidades que apresentam condições edafoclimáticas distintas, com dados de dois experimentos (E1 e E2). Foram analisadas as variáveis morfofisiológicas das pastagens, físico-hídricas do solo e dados meteorológicos do período experimental. A calibração do modelo baseou-se nas alterações do coeficiente de sensibilidade da cultura ao déficit hídrico (Ky) e na minimização dos desvios entre dados simulados e observados. O modelo apresentou desempenho satisfatório para as duas regiões analisadas. No experimento E1, o RMSE foi de 29,86% (aceitável) e o índice c de 0,86 (ótimo) na fase de calibração, mantendo os mesmos resultados na validação. No E2, houve uma melhoria no desempenho do modelo, com RMSE e índice c passando de 30,74% (pobre) e 0,84 (muito bom) na calibração, para 17,50% (boa) e 0,92 (ótimo) na etapa de validação, respectivamente. O modelo MZA-FAO adaptado para o capim Urochloa humidicola, pode ser utilizado com boa precisão para simular o rendimento de forragem dessa forrageira na região sul de Mato Grosso.
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- 2023
14. Methods for estimating the evapotranspiration of reference for Santo Antônio do Leverger-MT
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Alessandro Ferronato, Léo Adriano Chig, Daniel de Brito Goulart, José Holanda Campelo Júnio, Luiz Carlos Pereira, and Marcelo Sacardi Biudes
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irrigation ,models ,brazilian cerrado ,Agriculture ,Biology (General) ,QH301-705.5 - Abstract
In order to compare different methods of calculating evapotranspiration reference (ET0) with the standard method of FAO Penman-Monteith 56, it was used daily weather in Weather Station Pe Ricardo Remetter, installed in Experimental Farm of the Federal University of Mato Grosso, for the seasons of 2006. The methods of Penman and Hargreaveas-Samani, proved adequate to estimate ET0 in all seasons of the year when compared to the standard method of Penman-Monteith-FAO 56. The method of Class A pan has not submitted satisfactory adjustments to estimate ET0 compared to the method of Penman-Monteith-FAO 56. Humid seasons (spring and summer) was observed where the largest number of methods with performance "excellent", "very good" and "good" for the index "c" when compared with the drought seasons (autumn and winter ).
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- 2016
15. EDIÇÃO FILOLÓGICA E ESCRAVIDÃO: A PRESENÇA DO NEGRO NOS DOCUMENTOS COLONIAIS PERTENCENTES À RIBEIRA DOS ICÓS CEARENSE NO SÉCULO XVIII
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Francisco José Holanda and Expedito Eloísio Ximenes
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- 2022
16. FILOLOGIA E ENSINO: ABORDAGEM BRAQUIGRÁFICA EM DOCUMENTOS COLONIAIS E MENSAGENS INSTANTÂNEAS DA INTERNET
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Francisco José Holanda and Expedito Eloísio Ximenes
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- 2022
17. AVALIAÇÃO DA APRENDIZAGEM ESCOLAR: UM DESAFIO A PERCORRER
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Francisco José Holanda
- Published
- 2022
18. A IMPORTÂNCIA DA LEITURA NAS AULAS DE LÍNGUA PORTUGUESA A PARTIR DOS GÊNEROS TEXTUAIS
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Francisco Antônio Pereira de Araujo and Francisco José Holanda
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- 2022
19. HISTÓRIAS EM QUADRINHOS E O ENSINO: O TRABALHO COM HQs EM SALA DE AULA
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Francisco Antônio Pereira de Araújo and Francisco José Holanda
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- 2022
20. VARIAÇÕES LINGUÍSTICAS E PRÁTICAS EDUCACIONAIS: UMA DISCUSSÃO ACERCA DO TRABALHO COM OS REGIONALISMOS NO 6º ANO DO ENSINO FUNDAMENTAL II
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Francisco Antônio Pereira de Araújo, Francisco José Holanda, and Sara Juliene Jacinto Trajano
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- 2022
21. COESÃO TEXTUAL E ENSINO: APONTAMENTOS SOBRE MECANISMOS COESIVOS NA REDAÇÃO DO ENEM
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Andreza Luana da Silva Barros and Francisco José Holanda
- Published
- 2022
22. Estimation of water retention in Oxisols cultivated with cotton plant in the cerrado of Mato Grosso = Estimativa da retenção de água em Latossolos do Cerrado mato-grossense cultivados com algodão
- Author
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José Holanda Campelo Junior, Emilio Carlos de Azevedo, Marcelo de Carvalho Alves, Dimas de Mello, Francisco de Almeida Lobo, and Ricardo Santos Silva Amorim
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Soil water content ,Pedotransfer functions ,Potential matric ,Agriculture ,Agriculture (General) ,S1-972 ,Environmental sciences ,GE1-350 - Abstract
In the state of Mato Grosso, the area planted with cotton is mainly concentrated in the plains, where the climate Aw determines an alternation between a rainy and a dry season, and where the soil is predominant Red-Yellow Latosol and Red Latosol (Oxisol). One of the factors that determine success in cultivation of this species is just the prior knowledge of the hydraulic properties of soils which, for various reasons, are not variables of extensive knowledge in the areas of production. This study aimed to verify the adequacy of pedotransfer functions to evaluate the soil water retention capacity in the cotton regions in Mato Grosso, taking into account the bulk density and content of clay, silt and sand soil. For this, soil samples were collected in 21 plots of commercial production of cotton in the state of Mato Grosso to determinate the particle size distribution, bulk density, and water retention curve in soil. In the region of cotton production in Mato Grosso, the pedotransfer functions, 0,334 - 0,0003 Ar and 0,247 - 0,0003 Ar, for estimating the water content in the tensions of 0.033 and 1.5 MPa, respectively, are suitable to evaluate the water retention capacity of the soils of the cotton production plots in this state. = No estado de Mato Grosso, a área de plantio com o algodão está concentrada principalmente nos chapadões, onde o clima Aw determina uma alternância entre um período chuvoso e outro seco, e onde os solos LatossoloVermelho-Amarelo e Latossolo Vermelho são predominantes. Um dos fatores que determinam o sucesso no cultivo dessa espécie é justamente o conhecimento prévio das propriedades hidráulicas dos solos que, por diferentes razões não são variáveis de amplo conhecimento nas áreas de produção. Neste trabalho objetivou-se verificar a adequação de funções de pedotransferência para avaliar a capacidade de retenção de água dos solos de regiões produtoras de algodão em Mato Grosso, levando-se em consideração a densidade aparente e conteúdo de argila, silte e areia do solo. Para isso, foram coletadas amostras de solo em 21 talhões de produção de algodão do Mato Grosso, para determinação da distribuição do tamanho de partículas, da densidade aparente e da curva de retenção de água no solo. Na região de produção de algodão em Mato Grosso, as funções de pedotransferência, 0,334- 0,0003 Ar e 0,247-0,0003 Ar, para estimativas dos conteúdos de água nas tensões de 0,033 e 1,5 MPa, respectivamente, são adequadas para avaliar a capacidade de retenção de água dos solos dos talhões de cultivo de algodão nesse Estado.
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- 2014
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23. Nasal endoscopic and CT scan alterations of the paranasal sinuses as predictors of severity in patients with cystic fibrosis
- Author
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de Freitas, Marcos Rabelo, Vasconcelos, Déborah Nogueira, de Holanda Araújo Freitas, Ângela Elizabeth, Filho, José Holanda Maia, and de Castro e Silva, Claudia
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- 2013
- Full Text
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24. Analyzing the magnetic influence on magneto-optical interactions
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Wibson W. G. Silva, Luana M. C. S. Hildever, Maria C. G. Santos, Francisco Estrada, and José Holanda
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Condensed Matter - Materials Science ,Materials Science (cond-mat.mtrl-sci) ,FOS: Physical sciences ,Condensed Matter Physics ,Physics - Optics ,Electronic, Optical and Magnetic Materials ,Optics (physics.optics) - Abstract
Here, we study the magneto-optical interactions in magnetic structures considering the dependence of the interactions with the magnetic field. We perform numerical simulations in a structure of magnetic nanowires, considering them as one chain of strongly interacting single-domain particles. Robustly, we obtain a quantitative value for the interactions, which allows us to classify them into two magnetic states: demagnetized and magnetized.
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- 2022
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25. Adaptation, calibration, and validation of the agro-ecological zone model for Urochloa humidicola pastures1
- Author
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Jholian Maicon Ribeiro Santos, José Holanda Campelo Júnior, Osvaldo José de Oliveira, and Jéssica de Souza
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Soil Science ,Horticulture ,Agronomy and Crop Science - Published
- 2022
26. Desafios da atenção básica na adesão ao tratamento farmacológico da hipertensão arterial sistêmica: uma revisão integrativa
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Nargylla Bezerra de Lima, Rafael José Holanda, Macerlane de Lira Silva, Vanessa Erika Abrantes Coutinho, Sulaine Cavalcante Rodrigues, and Igor de Sousa Gabriel
- Published
- 2022
27. Fatores que dificultam a adesão farmacológica no tratamento da hipertensão em uma unidade básica de saúde
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Rafael José Holanda, Mirella Torquato Cândido, Inácio Andrade Torres Júnior, Macerlane de Lira Silva, Kerlywainne Rousanny de Oliveira Maciel, and Igor de Sousa Gabriel
- Published
- 2022
28. As alterações nasofibroscópicas e tomográficas de seios paranasais são preditoras de gravidade em pacientes com fibrose cística
- Author
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Marcos Rabelo de Freitas, Déborah Nogueira Vasconcelos, Ângela Elizabeth de Holanda Araújo Freitas, José Holanda Maia Filho, and Claudia de Castro e Silva
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fibrose cística ,sinusite ,índice de gravidade de doença ,Otorhinolaryngology ,RF1-547 - Abstract
A fibrose cística (FC) resulta de mutação no gene regulador da condutância transmembrana, responsável pelo controle dos processos secretores. As vias aéreas superiores (VAS) geralmente são comprometidas na forma de pansinusite crônica. OBJETIVO: Avaliar as alterações das VAS nos pacientes com FC e determinar a correlação entre os achados tomográficos e endoscópicos nasossinusais e a gravidade da doença. MÉTODO: Estudo transversal, prospectivo com 20 pacientes maiores de 5 anos com diagnóstico de FC avaliando escore de Shwachman-Kulczycki (S-K), tomografia de seios paranasais (TC) (escore de Lund-Mackay) e videonasofibroscopia (escore de Meltzer). RESULTADOS: Alterações tomográficas foram observadas em 94% dos casos. Alterações endoscópicas nas VAS foram encontradas em dez pacientes. Pólipo nasal ocorreu em três pacientes (15%). Observou-se correlação entre a intensidade das alterações da TC e o escore S-K (p = 0,0097) e entre os achados endoscópicos e o escore S-K (p = 0,0318). Observou-se relação positiva entre a presença de colonização crônica e os achados endoscópicos (p = 0,0325), o que não foi observado com os achados tomográficos (p = 0,2941). CONCLUSÃO: Há correlação inversa entre o escore clínico de S-K e os achados de TC e nasofibroscopia. Portanto, os pacientes clinicamente mais graves de acordo com o escore de S-K apresentam maior comprometimento de VAS.
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- 2013
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29. Adaptation, calibration, and validation of the agro-ecological zone model for Urochloa humidicola pastures.
- Author
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Ribeiro Santos, Jholian Maicon, Campelo Júnior, José Holanda, José de Oliveira, Osvaldo, and de Souza, Jéssica
- Abstract
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- Published
- 2023
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30. Impacts of Meteorological Attributes on Agronomic Characteristics of Sunflower Cultivated in the Cerrado
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Dryelle Sifuentes Pallaoro, Joadil Gonçalves de Abreu, Elisangela Clarete Camili, K. C. Sales, Claudio Guilherme Portela de Carvalho, Aloisio Brigido Borba Filho, José Holanda Campelo Júnior, Murilo Ferrari, Anne Caroline Dallabrida Avelino, Dayana Aparecida de Faria, Dayana Aparecida de Faria, UFMT, Cuiabá, MT., Dryelle Sifuentes Pallaoro, UFMT, Cuiabá, MT., Murilo Ferrari, UFMT, Cuiabá, MT., Aloisio Brigido Borba Filho, UFMT, Cuiabá, MT., Joadil Gonçalves de Abreu, UFMT, Cuiabá, MT., Elisangela Clarete Camili, UFMT, Cuiabá, MT., Anne Caroline Dallabrida Avelino, UFMT, Cuiabá, MT., Kyron Cabral Sales, UFMT, Cuiabá, MT., José Holanda Campelo Júnior, UFMT, Cuiabá, MT., and CLAUDIO GUILHERME PORTELA DE CARVAL, CNPSO.
- Subjects
Agronomy ,Helianthus ,Environmental science ,Climatic factors ,Sunflower ,Helianthus Annuus ,Correlation - Abstract
The sunflower has adaptation for cultivation in Brazilian conditions and the main product is the oil extracted from the seeds. This study aimed to verify the impacts of meteorological attributes on agronomic characteristics of sunflower genotypes cultivated as a second crop, in Mato Grosso, Brazil. The experimental design was randomized complete block design (RCBD), cultivating the two sunflower genotypes, M734 and Hélio, in three years (2009, 2011, 2012) with four replications. The agronomic characteristics evaluated were: plant height, capitulum diameter, weight of a thousand achenes, yield of achenes, oil content and oil yield. Then, water deficit and the maximum crop yield are estimated for correlation analysis between meteorological attributes and agronomic characteristics. In both genotypes studied there was a very strong correlation between plant height with evapotranspiration (r=0.99*) and very strong negative correlation (r=-0.99*) with water deficit. For mass of a thousand achenes, there was a very strong negative correlation with the maximum (r=-0.98*) and minimum (r=-0.96*) temperatures, and with evapotranspiration (r=-0.98*) in the Helio 358. In addition, effect of the water deficit on the oil yield (r=-0.98*) was verified for the same genotype. Very strong negative correlation was found between maximum temperature and oil content (r=-0.96*) in genotype M734. In sunflower cultivation in Mato Grosso, Brazil, water deficit reduces plant height, capitulum diameter and oil yield. The oil content of the achenes reduces when the maximum temperature increases, during the cultivation. For those reasons, the use of sunflower genotypes with shorter cycles and the earlier sowing could benefit the crop developing, by suiting the management, to avoid unfavorable climatic conditions that can cause reduction in production parameters.
- Published
- 2019
31. Adaptation, calibration, and validation of the agro-ecological zone model for Urochloa humidicola pastures1
- Author
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Santos, Jholian Maicon Ribeiro, primary, Campelo Júnior, José Holanda, additional, Oliveira, Osvaldo José de, additional, and Souza, Jéssica de, additional
- Published
- 2022
- Full Text
- View/download PDF
32. Estimativa do coeficiente Priestley-Taylor em floresta monodominante Cambarazal no Pantanal Estimation of the Priestley-Taylor coefficient in the monospecific forest in northern Pantanal, Brazil
- Author
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Luciana Sanches, Marcelo de Carvalho Alves, José Holanda Campelo Júnior, José de Souza Nogueira, and Higo José Dalmagro
- Subjects
evapotranspiração ,inundação ,sazonalidade ,evapotranspiration ,floodplain ,seasonality ,Meteorology. Climatology ,QC851-999 - Abstract
O coeficiente Priestley-Taylor (α) foi calculado baseado na estimativa da evapotranspiração pelo método de Bowen para floresta monodominante Vochysia divergens no Pantanal, Brasil. A área em estudo estava localizada no noroeste do Pantanal a aproximadamente 160 km de Cuiabá, Mato Grossso, Brasil (16º39'50''S; 56º47'50''O). Medições micrometeorológicas contínuas, em uma torre a uma altura de 32 m de altura, foram feitas de janeiro a dezembro de 2007. A evapotranspiração variou de 2,50 mm dia-1 (estação seca) a 4,10 mm dia-1 (estação úmida). O coeficiente Pristley-Taylor (α) variou durante o ano com valores máximos e mínimos nas estações seca e úmida, respectivamente, com média anual de 0,65 ± 0,18 de acordo com o padrão climático da área em estudo em função do aumento do conteúdo de água no solo/lâmina d'água de inundação e/ou diminuição na demanda evaporativa. Com a determinação empírica das dimensões de α, as estimativas da evapotranspiração podem ser melhoradas para florestas de Vochysia divergens na planície de inundação do Pantanal.The Priestley-Taylor coefficient (α) was calculated based on the Bowen method evapotranspiration estimative for Vochysia divergens monospecific forests in Pantanal, Brazil. The study area was located at the northeastern Pantanal, approximately 160 km from Cuiabá city, Mato Grosso State, Brazil (16º39'50''S; 56º47'50''W). Continuous micrometeorological flux measurements at a 32 m tower height were made from January to December of 2007. The evapotranspiration ranged from 2.26 mm day-1 (dry season) to 4.50 mm day-1 (wet season). The average estimated α value ranged along the year from a maximum and a minimum during the dry and wet season respectively, with an annual average of 0.65±0.18 according to the weather pattern over the study area due to the increase of water content in soil/water flooding depth and/or decrease in evaporative demand. Based on empirical α values, estimates of evapotranspiration can be improved for Vochysia divergens forests on Pantanal floodplain.
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- 2010
- Full Text
- View/download PDF
33. CARBON STOCK DETERMINATION IN TEAK (Tectona grandis L. f.) AT DIFFERENT AGES
- Author
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Eleusa Maria Almeida, José Holanda Campelo Júnior, and Zenesio Finger
- Subjects
quantificação de carbono ,plantação de Teca ,massa seca ,Agriculture ,Forestry ,SD1-669.5 - Abstract
The objective of this study was to evaluate the quantity of carbon in teak (Tectona grandis L.f.), with 0.5; 1.5; 2.5; 3.5 and 5.5 years of age, during one year. The teak evaluated belonged to the BRASTECA AGROFLORESTAL LTDA company, located in the municipality of Santo Antônio of Leverger, Mato Grosso, Brazil. The carbon stock for each age was assessed every 90 days by determining the amount of litter dry mass, organic carbon proportion in the soil, root density in the soil and the volume of the staff and crown in the three teak trees randomly selected for harvest. The assessment of the plant size, as height, diameter at chest height and crown projection, was carried out with twenty preserved plants at each age. The dry mass of the roots was determined from the relation between the soil volume and the density of roots of the three plants per age, by making four perforations per plant, with six samples for each, up to 0.90 m of depth. The carbon proportion in the soil and in the litter was obtained by age at each collection through laboratory analysis. The average carbon found per hectare was 122.5 t of C at 0.5 years; 104.3 t of C at 1.5 years; 180.8 t of C at 2.5 years; 303.1 t of C at 3.5 years and 322.3 t of C at 5.5 years, considering the numbers of plants per hectare at the different ages. Afterward, the average distribution of carbon per system component was found to be 90.8% in the soil, 5.04% to the aerial part, 3.04% in the roots and 1.21% in the litter.
- Published
- 2010
- Full Text
- View/download PDF
34. Desenvolvimento e qualidade da lima ácida Tahiti em Colorado do Oeste, RO
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Marcelo Notti Miranda and José Holanda Campelo Junior
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Sazonalidade climática ,graus-dia ,época ,crescimento de frutos ,Agriculture (General) ,S1-972 ,Biotechnology ,TP248.13-248.65 - Abstract
Os aspectos de crescimento, desenvolvimento e qualidade de frutos cítricos na região de Colorado do Oeste, RO, não têm sido explorados. Dessa forma, o objetivo deste trabalho foi avaliar o crescimento e a qualidade fisico-química de frutos de lima ácida Tahiti em diferentes épocas de desenvolvimento, sem irrigação, na região de Colorado do Oeste, RO. O experimento foi realizado no Instituto Federal de Rondônia (IFRO), Campus de Colorado do Oeste, durante os anos de 2006, 2007 e 2008, com o acompanhamento das safras de 2006/07 e 2007/08. Para cada safra foram avaliadas oito épocas de desenvolvimento dos frutos, da fase de chumbinho à colheita. Determinaram-se soma térmica em graus-dia, unidades fototérmicas e precipitação pluviométrica. Houve influência das condições meteorológicas na duração das épocas de desenvolvimento dos frutos e na qualidade dos frutos na safra 2006/07, mas na safra 2007/08 não houve diferença significativa para peso, tamanho médio dos frutos, acidez e rendimento médio de suco. Tamanho e peso dos frutos, pH, sólidos solúveis, acidez, relação SS/AT e teor de vitamina C do suco dos frutos apresentaram valores médios adequados aos padrões comerciais exigidos pelo mercado in natura e pela indústria. O rendimento de suco dos frutos colhidos na safra 2006/07 apresentou qualidade satisfatória para atender às necessidades do mercado in natura ou industrial, mas não para a safra 2007/08, devido ao baixo rendimento de suco dos frutos, provavelmente em razão da menor precipitação pluviométrica ocorrida nessa safra. O índice tecnológico encontrado nas safras avaliadas está abaixo do exigido pela indústria.
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- 2010
- Full Text
- View/download PDF
35. Unidades fototérmicas e temperatura-base inferior de frutos de Mangueira Alfa, na Baixada Cuiabana Photothermal units and lower base temperature for alfa mango fruit on the Baixada Cuiabana
- Author
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Marcelo Paes de Barros, Vitor Bacarin Zanetti, Camila Isabel de Menezes Fraga, Paulo Celso do Couto Nince, José Holanda Campelo Júnior, and Francisco de Almeida Lobo
- Subjects
Maturação ,manga ,cerrado ,graus-dia ,Maturation ,mango fruit ,degree-days ,Plant culture ,SB1-1110 - Abstract
O objetivo deste trabalho foi determinar a temperatura-base inferior (Tb) a partir da unidade fototérmica (UF) para o cultivo experimental de manga Alfa sob condições de cerrado. Foram utilizados dados diários da temperatura do ar disponibilizados pela Estação Agrometeorológica Padre Ricardo Remetter, localizada em Santo Antônio do Leverger-MT (15,8° S e 56,1° W, 140 m), e avaliação sensorial do estádio de maturação dos frutos de manga. A Tb foi determinada pelo método da menor variabilidade das unidades fototérmicas (UF) acumuladas do período da floração à colheita dos frutos, variabilidade avaliada pelo coeficiente de variação (cv) simulado para diferentes valores da Tb. De julho a novembro de 2007, em três plantas de um pomar demonstrativo irrigado, foram identificados 82 frutos para o acompanhamento do crescimento e maturação. Entre esses frutos, em meados de dezembro de 2007, foi possível identificar 13 frutos que atingiram a maturidade fisiológica, após um período médio de observação de 112 dias. Para exigência fototérmica de 1.878.166,1 UF, encontrou-se Tb de 10 °C, valor consistente com os apresentados na literatura para a cultivar de manga, o que comprova a eficiência do método que combina a ação da temperatura e do fotoperíodo sobre a maturação dos frutos e que confere um caráter mais racional que o método tradicional da soma térmica.In this study was to determine the lower base temperature (Tb) for Alfa mango fruit, using the photothermal units (PTU) method in cerrado conditions. The meteorological data for the study were acquired from "Padre Ricardo Remetter" meteorological station located at Santo Antonio do Leverger, MT, Brazil (15,8° S and 56,1° W, 140 m), and the fruit data was acquired by sensorial evaluation of mango fruit maturation state. The Tb was determined by less variability of the coefficient of variation (cv) method applied to the PTU sum, from flowering to harvest, simulated for different values of Tb. In the period from July to November of 2007, in tree plants from of an irrigated experimental field, were marked 82 fruits in which we observed the growing and maturation. From the marked fruits were identified 13 fruits that were at harvest point, in December of 2007, after an average observation period of 112 days. For a photothermal requirement of 1878166,13 PTU was observed Tb for the fruits of 10 °C, this value is consistent with those reported in the literature, which proves the efficiency of the method that combines the action of temperature and daylength on fruit maturity and providing a more rational method than the traditional heat units method.
- Published
- 2010
36. DETERMINAÇÃO DO ESTOQUE DE CARBONO EM TECA (Tectona grandis L. F.) EM DIFERENTES IDADES
- Author
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Eleusa Maria Almeida, José Holanda Campelo Júnior, and Zenesio Finger
- Subjects
Agriculture ,Forestry ,SD1-669.5 - Abstract
The objective of this study was to evaluate the quantity of carbon in teak (Tectona grandis L.f.), with 0.5; 1.5; 2.5; 3.5 and 5.5 years of age, during one year. The teak evaluated belonged to the BRASTECA AGROFLORESTAL LTDA company, located in the municipality of Santo Antônio of Leverger, Mato Grosso, Brazil. The carbon stock for each age was assessed every 90 days by determining the amount of litter dry mass, organic carbon proportion in the soil, root density in the soil and the volume of the staff and crown in the three teak trees randomly selected for harvest. The assessment of the plant size, as height, diameter at chest height and crown projection, was carried out with twenty preserved plants at each age. The dry mass of the roots was determined from the relation between the soil volume and the density of roots of the three plants per age, by making four perforations per plant, with six samples for each,up to 0.90 m of depth. The carbon proportion in the soil and in the litter was obtained by age at each collection through laboratory analysis. The average carbon found per hectare was 122.5 t of C at 0.5 years; 104.3 t of C at 1.5 years; 180.8 t of C at 2.5 years; 303.1 t of C at 3.5 years and 322.3 t of C at 5.5 years, considering the numbers of plants per hectare at the different ages. Afterward, the average distribution of carbon per system component was found to be 90.8% in the soil, 5.04% to the aerial part, 3.04% in the roots and 1.21% in the litter.
- Published
- 2010
37. Métodos não destrutivos para estimativa de densidade de área foliar em mangueira Non-destructive methods for estimating leaf area density in mango
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Mario Zortéa Antunes Junior, Alessandro Ferronato, Susan Dignart Ferronato, Katiuscia Rodrigues, Márcia Martim Pereira Gallon, Nídia Martineia Guerra Gomes, Ana Carla Stieven, and José Holanda Campelo Júnior
- Subjects
Mangifera indica ,lei de Beer-Lambert ,PAR ,Beer-Lambert law ,Agriculture (General) ,S1-972 - Abstract
O objetivo deste trabalho foi estimar o número de folhas de ramos do dossel de cultivares de mangueira e estimar a densidade de área foliar utilizando, respectivamente, uma relação alométrica e um modelo de interceptação de luz. O trabalho foi conduzido com as cultivares Alfa, Roxa e Malind, na fazenda experimental da Universidade Federal de Mato Grosso, no Município de Santo Antônio do Leverger, MT. As equações testadas para a determinação do número de folhas apresentaram desempenho ótimo, com índices de confiança que variaram entre 0,85 e 0,94, e podem ser utilizadas como alternativa para a estimativa da área foliar das três cultivares. O modelo de interceptação da luz também apresentou desempenho ótimo e bom na estimativa da densidade foliar, com índices de confiança que variaram entre 0,97 e 0,99 e 0,68 e 0,95 para as cultivares de mangueira Roxa e Malind, respectivamente.The objective of this work was to estimate the number of leaves in the branches of mango cultivars canopies and to estimate the leaf area density using, respectively, an allometric relation and a light interception model. The work was carried out with the Alfa, Roxa and Malind cultivars, grown at the experimental farm of the Universidade Federal de Mato Grosso, in the municipality of Santo Antônio do Leverger, MT, Brazil. The equations tested for determining the number of leaves had excellent performance, with confidence indexes ranging from 0,85 to 0,94, and can be used as an alternative for estimating the leaf area of the three cultivars. The light interception model also had good performance in estimating leaf density, with confidence indexes ranging from 0,97 to 0,99 and from 0,68 to 0,95 for the Roxa and Malind mango cultivars respectively.
- Published
- 2009
- Full Text
- View/download PDF
38. Monitoramento do mosquito Aedes aegypti (Linnaeus, 1762) (Diptera: Culicidae), por meio de ovitrampas no Campus da Universidade Federal de Mato Grosso, Cuiabá, Estado de Mato Grosso Monitoring of Aedes aegypti mosquitoes (Linnaeus, 1762) (Diptera: Culicidae) by means of ovitraps at the Universidade Federal de Mato Grosso Campus, Cuiabá, State of Mato Grosso
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Rosina Djunko Miyazaki, Ana Lúcia Maria Ribeiro, Marta Gislene Pignatti, José Holanda Campelo Júnior, and Marina Pignati
- Subjects
Dengue ,Fatores abióticos ,Infestação ,Abiotic factors ,Infestation ,Arctic medicine. Tropical medicine ,RC955-962 - Abstract
A dengue é uma das mais importantes arboviroses que atinge o homem e constitui um sério problema de saúde nas áreas tropicais, cujas condições climáticas são favoráveis à ocorrência de focos de Aedes aegypti. Armadilhas de oviposição acrescidas de infusão de feno foram instaladas em 19 pontos no Campus da Universidade Federal de Mato Grosso com o objetivo de verificar mensalmente o nível de infestação do vetor da dengue e a influência dos fatores abióticos. Os resultados obtidos foram comparados com dados abióticos de temperatura e umidade relativa do ar, e de precipitação pluviométrica, mensais e dos dias que as armadilhas permaneceram no campo. A chuva é o único fator abiótico que apresenta influência no nível de infestação dos vetores da dengue no local. Existem diferenças significativas entre as quantidades de ovos de Aedes aegypti encontrados em diferentes locais de coleta na mesma área de estudo. O número de ovos encontrados em cada ponto ao longo do ano não obedece a um padrão de distribuição único.TDengue is one of the most important arboviruses affecting man and is a serious health problem in tropical areas where climatic conditions are favorable for occurrences of foci of Aedes aegypti. Oviposition traps with added hay infusion were installed at 19 points on the campus of the Federal University of Mato Grosso with the objective of investigating the monthly levels of infestation with the dengue vector and the influence of abiotic factors. The results obtained were compared with the following monthly abiotic data: temperature, relative air humidity and precipitation; and with the number of days for which the traps remained in the field. Rain was the only abiotic factor that influenced the level of infestation of the dengue vector at this location. There were significant differences between the quantities of Aedes aegypti eggs found at different sites within the same study area. The numbers of eggs found at each site over the year did not follow a single distribution pattern.
- Published
- 2009
- Full Text
- View/download PDF
39. Estimativa do balanço de energia em cambarazal e pastagem no norte do Pantanal pelo método da razão de Bowen Estimate of energy balance in cambarazaland pasture in the north of Pantanal by Bowen ratio method
- Author
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Marcelo Sacardi Biudes, José Holanda Campelo Júnior, José de Souza Nogueira, and Luciana Sanches
- Subjects
razão de Bowen ,sazonalidade ,floresta tropical ,microclima ,Bowen ratio ,seasonality ,tropical forest ,microclimate ,Meteorology. Climatology ,QC851-999 - Abstract
O estudo do balanço de energia de uma superfície vegetada e a atmosfera é importante para caracterizar o microclima local, identificar interações entre variáveis ambientais e a vegetação, e identificar efeitos das atividades antropogênicas. O objetivo deste trabalho foi estimar a variação sazonal do balanço de energia pelo método da razão de Bowen em uma área de vegetação monodominante de Cambará na RPPN SESC-Pantanal e uma área de pastagem na Fazenda Experimental da UFMT. Os componentes do balanço de energia apresentaram sazonalidade, com maiores médias na estação chuvosa nas duas áreas de estudo. No cambarazal houve maior variação do fluxo de calor latente da estação seca para a chuvosa que na pastagem. Entretanto, a variação sazonal do fluxo de calor sensível foi menor no cambarazal que na pastagem, devido ao efeito termo-regulador do cambarazal, em função da maior biomassa. A energia disponível aos dois sítios foi destinada prioritariamente em fluxo de calor latente, 80,0% no cambarazal e 56,6% na pastagem, seguido pelo fluxo de calor sensível, 19,1 e 42,9%, e pelo fluxo de calor no solo, 0,3 e 7,2%.The energy balance study of a vegetated surface and atmosphere is important to characterize the local microclimate, identify interactions among environmental variables and the vegetation and to identify anthropogenic activities effects. The objective of this work was estimate the seasonality of energy balance by Bowen ratio method in a monodominant vegetation of Cambará area in the RPPN SESC-Pantanal and a pasture area in UFMT's Experimental Farm. The energy balance components presented seasonality, with larger averages at the rainy station in two areas of study. In the cambarazal was a higher variation of the latent heat flux of the dry season for the rainy season that in the pasture. However, the seasonal variation of the sensible heat flux in the cambarazal was lower than in the pasture, due to the thermo-regulatory effect in the cambarazal, according to the largest biomass. The available energy at two ranches was partitioned priority in latent heat flux, 80,0% in the cambarazal and 56,6% in the pasture, followed by the sensible heat flux, 19,1 and 42,9%, and by the soil heat flux, 0,3 and 7,2%.
- Published
- 2009
- Full Text
- View/download PDF
40. Desempenho do enwatbal para avaliar a umidade do solo e o uso da água em um sistema agroflorestal Enwatbal´s performance in the evaluation of soil moisture and water use in an agroforestry system
- Author
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Joaquim Alex Rodrigues Duran and José Holanda Campelo Júnior
- Subjects
Simulação ,água no solo ,sistemas agroflorestais ,Agroforestry ,simulation ,soil water ,Forestry ,SD1-669.5 - Abstract
O objetivo deste trabalho foi avaliar o desempenho do modelo de simulação ENWATBAL para a estimativa da variação da quantidade de água do solo, em um sistema agroflorestal. Para permitir a validação do modelo, comparou-se a quantidade de água no solo medida com a estimada. O erro-padrão da estimativa indicou variações de 0,02 a 0,1 m³.m-3 na umidade volumétrica e 8,66 a 22 mm no armazenamento de água no solo. Os menores erros-padrão foram encontrados nas profundidades entre 0,3 - 0,6 m, seguidas pelas profundidades de 0,6 - 0,9 e 0,0 - 0,3 m. O índice de concordância variou de 0,51 a 0,93, sendo os maiores valores encontrados na profundidade de 0,3-0,6 m e os menores nas profundidades de 0 - 0,3 e 0,3 - 0,6 m. A eficiência do uso da água na Teca (Tectona grandis L. F.) variou de 1,70 g kg-1 a 2,43 g kg-1; na mandioca (Manihot esculenta Crantz), variou de 0,13 a 1,29 g kg-1; e no milho (Zea mays L.), de 0,53 a 0,71 g kg-1. Nos consórcios entre os cultivos anuais e as árvores, verificou-se que a Teca consumiu maior quantidade de água que a mandioca e o milho. Verificou-se, também, que a mandioca apresentou menor competição por água quando comparada com o milho, nos respectivos ciclos.The objective of this work was to evaluate the simulation model ENWATBAL's performance in the estimate of the soil water amount variation in an agroforestry system. The amount of measured soil water was compared with the estimated amount to validate the model. The estimate's standard error showed variations between 0.02 and 0.1 m³ m-3 for volumetric moisture and 8.66 to 22 mm for soil water storage. The lesser standard errors of the estimate were found at depths between 0.3 - 0.6 m, followed by depths of 0.6 - 0.9 and 0.0 - 0.3 m. The agreement index varied from 0.51 to 0.93, with the highest values being found at the depth of 0.3 - 0.6 m and the lowest at the depths of 0 - 0.3 and 0.3 - 0.6 m. Water use efficiency varied from 1.70 g kg-1 to 2.43 g kg-1, for teak, 0.13 to 1.29 g kg-1 for cassava, and 0.53 at 0.71 g kg-1 for maize. In the consortium of annual crops and trees, it was verified that teak consumed a greater amount of water than cassava and maize. Cassava presented a lesser competition for water than maize, in the respective cycles.
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- 2008
- Full Text
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41. Rashba-Edelstein magnetoresistance in two-dimensional materials at room temperature
- Author
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Sergio M. Rezende, José Holanda, and Joaquim Mendes
- Subjects
Spin pumping ,Materials science ,Magnetoresistance ,Condensed matter physics ,business.industry ,Yttrium iron garnet ,Inverse ,Heterojunction ,chemistry.chemical_compound ,Semiconductor ,Electrical resistance and conductance ,chemistry ,business ,Spin (physics) - Abstract
We report the observation of the Rashba-Edelstein magnetoresistance (REMR) at room temperature in two two-dimensional (2D) materials, single layer graphene (SLG) and 2D semiconductor $\mathrm{Mo}{\mathrm{S}}_{2}$. The measurements were performed in heterostructures with yttrium iron garnet (YIG), namely, YIG/SLG and ${\text{YIG/MoS}}_{2}$, by means of the modulated magnetoresistance technique. We show that the action of the direct and inverse Rashba-Edelstein effects (REEs) in a YIG/2DM structure couples current-induced spin accumulation to the electric resistance, producing the REMR. The resistance change is similar to the one observed in spin Hall magnetoresistance experiments, but the origin of the change here lies in the 2D Rashba-Edelstein effects and not in the 3D spin Hall effects. The measured REE lengths for the two materials are in good agreement with the values obtained with the electric spin pumping technique.
- Published
- 2021
42. INFLUÊNCIA DAS CARACTERÍSTICAS FÍSICO-HÍDRICAS DE DOIS SOLOS DO CERRADO MATOGROSSENSE NAS VARIÁVEIS PRODUTIVAS DO CAPIM HUMIDÍCOLA.
- Author
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RIBEIRO SANTOS, JHOLIAN MAICON, CAMPELO JÚNIOR, JOSÉ HOLANDA, GONÇALVES FELETTI, RÔMULO CAIQUE, ANTÔNIO A SILVA, MARCOS, LIMA DA SILVA, VALÉRIA, and CARMONA MALVEZE DA SILVA, LUCIANA
- Abstract
Copyright of Revista IRRIGA - Brazilian Journal of Irrigation & Drainage is the property of Revista IRRIGA (Brazilian Journal of Irrigation & Drainage) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
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43. Estimativa da retenção de água em Latossolos do Cerrado mato-grossense cultivados com algodão.
- Author
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José Holanda Campelo Junior, Emilio Carlos de Azevedo, Marcelo de Carvalho Alves, Dimas de Mello, Francisco de Almeida Lobo, and Ricardo Santos Silva Amorim
- Subjects
Retenção de Água no Solo ,Potencial Mátrico ,Funções de Pedotransferência ,Agriculture ,Agriculture (General) ,S1-972 ,Environmental sciences ,GE1-350 - Abstract
No estado de Mato Grosso, a área de plantio com o algodão está concentrada principalmente nos chapadões, onde o clima Aw determina uma alternância entre um período chuvoso e outro seco, e onde os solos LatossoloVermelho-Amarelo e Latossolo Vermelho são predominantes. Um dos fatores que determinam o sucesso no cultivo dessa espécie é justamente o conhecimento prévio das propriedades hidráulicas dos solos que, por diferentes razões não são variáveis de amplo conhecimento nas áreas de produção. Neste trabalho objetivou-se verificar a adequação de funções de pedotransferência para avaliar a capacidade de retenção de água dos solos de regiões produtoras de algodão em Mato Grosso, levando-se em consideração a densidade aparente e conteúdo de argila, silte e areia do solo. Para isso, foram coletadas amostras de solo em 21 talhões de produção de algodão do Mato Grosso, para determinação da distribuição do tamanho de partículas, da densidade aparente e da curva de retenção de água no solo. Na região de produção de algodão em Mato Grosso, as funções de pedotransferência, 0,334-0,0003 Ar e 0,247-0,0003 Ar, para estimativas dos conteúdos de água nas tensões de 0,033 e 1,5 MPa, respectivamente, são adequadas para avaliar a capacidade de retenção de água dos solos dos talhões de cultivo de algodão nesse Estado.
- Published
- 2014
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44. Theory for phonon pumping by magnonic spin currents
- Author
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José Holanda, O. Alves Santos, Sergio M. Rezende, D. S. Maior, and Physics of Nanodevices
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Physics ,Spin pumping ,Spintronics ,Condensed matter physics ,Phonon ,Magnon ,Yttrium iron garnet ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Brillouin zone ,chemistry.chemical_compound ,Condensed Matter::Materials Science ,chemistry ,0103 physical sciences ,Spin Hall effect ,Condensed Matter::Strongly Correlated Electrons ,010306 general physics ,0210 nano-technology ,Spin-½ - Abstract
In recent years several experimental observations and theoretical predictions of unique phenomena involving the interplay between spin currents and the coupled magnetization-elastic dynamics have invigorated the field of spintronics. One important experiment reported several years ago showed that elastic waves can produce spin pumping, that is, generation of spin currents in a metallic film in contact with a ferromagnetic material. Very recently the Onsager reciprocal of this effect has been observed in samples made of a film of the insulating ferrimagnet yttrium iron garnet in contact with a platinum strip with nanoscopic silver particles that is known to exhibit a giant spin Hall effect. By passing an electric current through the metallic strip, the spin current generated by the spin Hall effect produces a large magnonic spin current that excites phonons with microwave frequency, observed by Brillouin light scattering. Here we show that these experiments are explained by a theory based on a process in which one magnon in the spin current creates one phonon and another magnon, with conservation of energy and momentum. The theoretical value of the critical charge current in the metallic strip necessary to drive phonons and the values of the phonon frequencies are in good agreement with the values measured experimentally.
- Published
- 2021
45. Effect of Water Stress on the Development of Soybean Crop
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Dryelle Sifuentes Pallaoro, Thalles Alexandre Xavier Pereira, Matheus Azevedo dos Santos, José Holanda Campelo Júnior, Aloisio Bianchini, Arnaldo Gonçalves de Campos, Ana Lucia da Silva, Rodrigo Fernandes Daros, and Pedro Silvério Xavier Pereira
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Water balance ,Agronomy ,Evapotranspiration ,Water stress ,Environmental science ,Soybean crop - Abstract
The present work had the objective of evaluating the effects of the spatial variability of the main meteorological elements on soybean yield, variety M7739 IPRO from Monsoy, with an early cycle of 105 days, with sowing at the beginning of October and harvesting at the beginning of the month in February, in two agricultural years (2013/14 and 2014/15) at Santa Luzia farm, located in the municipality of Campo Verde - MT (15º42'28 ''S, 55º19'59'' W, 736 m). The meteorological data of the region were obtained through the 9th district of meteorology (9th DISME) of the National Institute of Meteorology - INMET. The coefficient of culture (kc) was defined following the development stages of the culture. The estimates of evapotranspiration (potential and crop) were determined by the water balance method and the sensitivity coefficients (ky) of the soybean crop were estimated by the expression Ky=(1-Yr/Ym)/(1-ETr/ETm), in which ky = yield response factor; Yr = actual yield of the crop; Ym = maximum yield of the crop; ETr = actual evapotranspiration e ETm = maximum evapotranspiration. The values of Ky were all lower than 1, both for the crop cycle in the 2013/14 crop year and for the crop cycle 2014/15, indicating that the soybean crop is adaptable to water deficit.
- Published
- 2019
46. Zoning of Water Deficiency Risk for Conventional Cotton in Mato Grosso
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José Holanda Campelo Júnior, Francisco de Almeida Lobo, Ricardo Santos Silva Amorim, and Elizangela Selma da Silva
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Agronomy ,Biology ,Zoning ,Gossypium hirsutum ,Water deficit - Abstract
Cotton agroclimatic zoning is an essential tool to establish the most favorable periods for its cultivation, when the environmental conditions are more propitious, in order to reduce risks in agricultural activity. The objective of this work was to develop the zoning of the risk estimation of cotton yield reduction in the state of Mato Grosso, using the FAO method. Cultivars of early, medium and late cycles were considered, with four sowing dates (12/11, 12/21, 1/01 and 1/11) and three available water capacities (60, 140 and 200 mm). Results were specialized by ordinary kriging. The southernmost regions of the state presented the highest reduction risks, due to the lower precipitation in these areas. Sowing period 1 presented the lowest yield reduction risk, and the late-cycle cultivar in season 4 was the one that presented the highest reduction risk. Trough the validation of the obtained results, it can be considered that the methodology adopted in this work to verify the risk of yield decrease proved to be efficient.
- Published
- 2019
47. Homogeneity Evaluation of Historical Rainfall and Temperature Series in Mato Grosso
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Ricardo Santos Silva Amorim, Francisco de Almeida Lobo, Elizangela Selma da Silva, and José Holanda Campelo Júnior
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Homogeneity (statistics) ,Physical geography ,Mathematics - Abstract
The homogeneity investigation of a series can be performed through several nonparametric statistical tests, which serve to detect artificial changes or non-homogeneities in climatic variables. The objective of this work was to evaluate two methodologies to verify the homogeneity of the historical climatological series of precipitation and temperature in Mato Grosso state. The series homogeneity evaluation was performed using the following non-parametric tests: Wald-Wolfowitz (for series with one or no interruption), Kruskal-Wallis (for series with two or more interruptions), and Mann-Kendall (for time series trend analysis). The results of the precipitation series homogeneity analysis from the National Waters Agency stations, analyzed by the Kruskal-Wallis and Wald-Wolfowitz tests, presented 61.54% of homogeneous stations, being well distributed throughout Mato Grosso state, whereas those of the trend analysis allowed to identify that 87.57% of the rainfall-gauging stations showed a concentrated positive trend, mainly in the rainy season. Out of the conventional stations of the National Institute of Meteorology of Mato Grosso, seven were homogeneous for the precipitation variable, five for maximum temperature and four stations were homogeneous for minimum temperature. For the trend analysis in the 11 stations, positive trends of random nature were observed, suggesting increasing alterations in the analyzed variables. Therefore, the trend analysis performed by the Mann-Kendall test in the precipitation, and maximum and minimum temperature climate series, indicated that several data series showed increasing trends, suggesting a possible increase in precipitation and temperature values over the years. The results of the Kruskal-Wallis and Wald-Wolfowitz tests for homogeneity presented more than 87% of homogeneous stations.
- Published
- 2019
48. Pseudoankylosis Caused by Osteoma of the Coronoid Process: A Case Report: PCC-072
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BARRETO, SIMONE DANTAS, DOS SANTOS, BRUNA RAFAELA MARTINS, DE MORAIS, HÉCIO HENRIQUE ARAÚJO, VASCONCELLOS, RICARDO JOSÉ HOLANDA, DA COSTA ARAÚJO, FÁBIO ANDREY, DA COSTA, BRUNO DICSON BEZERRA, and BARBALHO, JIMMY CHARLES MELO
- Published
- 2015
- Full Text
- View/download PDF
49. Acurácia e calibração de uma sonda de capacitância em um neossolo quartzarênico cultivado com caju
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Fabricio Tomaz Ramos, Fernando Pivetta, Victor Arlindo Taveira de Matos, Guilherme de Barros Seixas, and José Holanda Campelo Júnior
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diviner 2000®. frequência no domínio do tempo (fdr). sensores de capacitância. ,Agriculture ,Biology (General) ,QH301-705.5 - Abstract
A umidade do solo determinada à base de peso ou volume é um método destrutivo e não pode ser automatizado. Nesse contexto, objetivou-se avaliar a acurácia de uma sonda de capacitância (modelo Diviner 2000®) para medição da umidade em profundidade em um Neossolo Quartizarênico Órtico êutrico cultivado com caju. Para isso, a sonda foi calibrada com base na umidade volumétrica a cada 0,1 m até 0,3 m de profundidade. Verificou-se que: (i) a equação de calibração explicou significativamente 70% da umidade do solo, no intervalo mínimo e máximo de 0,0294 a 0,2418 m3 m-3, respectivamente; (ii) com base nos resultados do índice de concordância de Willmott (0,7817), do índice de desempenho de Camargo-Sentelhas (0,6557) a sonda substituiu "medianamente" a umidade real do solo, provavelmente devido as limitações verificadas no solo do presente trabalho, e do ponto de vista de economia de água aplicada via irrigação não é adequado, pois considerando a média da porosidade total do solo de 0,3533 m3 m-3 obteve-se variação de 7 m3 m-3 pelo teste de Bland-Altman, que representa 19,86% do total de poros, valor acima dos 5% de erro comum usado em experimentos agronômicos.
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- 2014
50. Temperaturas basais e exigência térmica para a maturação de caju
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Victor Arlindo Taveira de Matos, Fernando Pivetta, Severino de Paiva Sobrinho, Ana Silvia de Oliveira Tissiani, Ana Paula Meira Soares Pereira, Fabrício Tomaz Ramos, and José Holanda Campelo Júnior
- Subjects
Anacardium occidentale. Soma térmica. Graus-dia. Unidades fototérmicas. Fotoperíodo. ,Agriculture ,Biology (General) ,QH301-705.5 - Abstract
O objetivo neste trabalho foi identificar as temperaturas basais e a exigência térmica para completar o processo de maturação de frutos de três clones de cajueiro-anão: FAGA 1, FAGA 10 e FAGA 11. Entre agosto e novembro de 2010, abril e novembro de 2011 e abril e agosto de 2012, em função da disponibilidade foram marcados semanal e aleatoriamente até dez frutos e pseudofrutos por clone, medidos e classificados quanto ao estádio de maturação até amadurecerem. Após obter os períodos de maturação, foram determinadas as temperaturas basais para cada clone utilizando o método do menor coeficiente de variação para a soma térmica (ST) e para as unidades fototérmicas (UF) acumuladas nos períodos. Verificou-se que o número de dias necessários para completar a maturação dos cajus foi menor nos meses com temperatura média do ar acima de 28 ºC e que as aproximações utilizando os métodos da ST foram mais úteis na previsão do tempo fisiológico necessário para completar a maturação do fruto do que a contagem do tempo cronológico em dias. As temperaturas basais inferiores determinadas pelo método da ST são iguais a 15,2; 13,8 e 10,0 ºC para FAGA 1, FAGA 10 e FAGA 11, respectivamente enquanto suas exigências térmicas foram de 437,3; 493,8 e 639,0 ºC dia. Devido o fotoperíodo não ter influenciado no tempo de maturação dos cajus, o método das unidades fototérmicas não foi ajustado.
- Published
- 2014
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