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12 results on '"DA ASSUNÇÃO, HILDEU FERREIRA"'

1. Montagem de um sistema de proje\c{c}\~ao digital para domo hemisf\'erico

Author

Filho, Valdinei Bueno L., da AssunÇão, Hildeu Ferreira, Lima, Thiago Oliveira, and Martins, Alessandro

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

In this work we present an alternative to a full dome digital projection system. The system presented is based upon a single projector coupled to the optical lens (fisheye and objective lens) to scatter the light onto the dome surface. This alternative projection system offers many advantages as manufacturing lower cost and high quality of the image projection. From the practical applications, the system is ideal for use in planetariums lessons.

Published
2010

3. Occurrence of the Cowpea aphid-borne mosaic virus in Jataí, Brazil

Author

Gomes, Francielly Rodrigues, Marques Costa, Marcelo, Celeste Carneiro, Luciana, Marques de Almeida Spadotti, David, da Assunção, Hildeu Ferreira, and Pereira da Silva, Danielle Fabíola

Subjects
food and beverages, humanities
Abstract

The objective was to characterize the introduction of the passion fruit woodiness disease in plants and fruits of passion fruit in Jataí - GO. Plants of passion fruit showed the symptoms of the virus at the end of the first year in the field. Infection was confirmed by serological analysis using the PTA ELISA indirect test. This report will contribute to the information already known about this disease, and will serve as a basis for passion fruit producers to identify symptoms in plants affected with the virus.

Published
2021

4. Characteristics of 137 macaw palm (Acrocomia aculeata) fruit accessions from Goias, Brazil

Author

Fialho dos Reis, Edésio, Naves Pinto, Jefferson Fernando, da Assunção, Hildeu Ferreira, da Costa Netto, Antonio Paulino, Pereira da Silva, Danielle Fabiola, Fialho dos Reis, Edésio, Naves Pinto, Jefferson Fernando, da Assunção, Hildeu Ferreira, da Costa Netto, Antonio Paulino, and Pereira da Silva, Danielle Fabiola

Abstract

Accessions of macaw palm fruits from the State of Goias, Brazil were characterized aiming the identification of groups with similar characteristics and indicate groups with higher agronomic potential, using multivariate tools. Fruit were harvested with completed yellow fruit bunches without whitish scores. The evaluated variables were fruit and almond length, fruit and almond diameters, fruit and dehydrated almond weight, average number of almonds, oil percentage of almond and dried fruit. The genetic diversity of populations was evaluated by Ward’s clustering method and Person´s correlation was obtained to evaluate the relative importance of each characteristic and variance analysis associated with Tukey´s test to verify the group’s effects. The studied population demonstrated great variability. The characteristics that most contributed to the variability were fruit weight and diameter and the almond´s oil percentage. Ward´s group analysis revealed six groups of similarity, being significant for all evaluated characteristics. Group VI stood out for all evaluated characteristics and group III presented the best averages for the almond´s weight and almonds and dried fruit oil percentage.

Published
2019

6. Evaluation of postharvest properties in different passion fruit species during ripening.

Author

GOMES, FRANCIELLY RODRIGUES, BARBOSA, MOAB ACACIO, MARQUES RODRIGUES, CLÁUDIA DAYANE, HURTADO-SALAZAR, ALEJANDRO, DA SILVEIRA-NETO, AMÉRICO NUNES, DA ASSUNÇÃO, HILDEU FERREIRA, and PEREIRA DA SILVA, DANIELLE FABÍOLA

Subjects
FRUIT ripening, POSTHARVEST technology of fruit, FRUIT quality, PASSION fruit, CAROTENOID analysis
Abstract

Copyright of Revista Colombiana de Ciencias Hortícolas is the property of Revista Colombiana de Ciencias Horticolas 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
2021
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7. Moisture Temporal Stability of a Typic Hapludox under Different Uses and Depths.

Author

Guimarães, Claudinei Martins, Gomes Costa, Carlos Alexandre, Gomes Filho, Raimundo Rodrigues, dos Santos Silva, Francisco Charles, da Assunção, Hildeu Ferreira, Flávio Carneiro, Leandro, Pedrotti, Alceu, and Doll, Kenneth Michael

Abstract

Temporal stability shows that specific within-field locations can represent average moisture values for a period of time, reducing efforts of collecting and measurement field observations. The objective of this study was to analyze the temporal stability of soil moisture within a Hapludox, typical of Cerrado, a unique Brazilian biome (similar to savanna), located in the southwestern state of Goiás. Instant readings of volumetric soil moisture were done biweekly from November 2013to February 2014, using a portable TDRSensor with rods of 0.12 m in length, at 0- to 0.12-, from 0.12- to 0.24-, and 0.24- to 0.36-m soil depths. The TDR sensor data were corrected and calibrated by volumetric water content data obtained from gravity method and soil bulk density measurements. To quantify temporal stability, we used nonparametric methods: Spearman correlation coefficient, average relative difference, and temporal stability index. Temporal stability on the field scale differed between the three sites/ systems. Average soil moisture can be accurately estimated at only one georeferenced point for each site/management system, reducing measurement effort in long-term studies. [ABSTRACT FROM AUTHOR]

Published
2019
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8. Response of the TDR sensor to moisture under different types of management of a typical Latosol in the Cerrado.

Author

Martins Guimarães, Claudinei, Gomes Costa, Carlos Alexandre, Flávio Carneiro, Leandro, and da Assunção, Hildeu Ferreira

Abstract

Copyright of Revista Ciência Agronômica is the property of Revista Ciencia Agronomica 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
2019
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9. Development and maturation of mango fruits cv. 'Ubá' in Visconde do Rio Branco, Minas Gerais State, Brazil.

Author

da Silva, Danielle Fabíola Pereira, Salomão, Luiz Carlos Chamhum, Pereira, Laísse Danielle, do Valle, Karminne Dias, da Assunção, Hildeu Ferreira, and Cruz, Simério Carlos

Subjects
CULTIVARS, MANGO, DEVELOPMENTAL biology, CHEMICAL composition of plants, FRUIT
Abstract

Copyright of Revista Ceres is the property of Revista Ceres 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
2018
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10. Estimativa da exigência hídrica do amendoim usando um modelo agrometeorológico

Author

da Assunção, Hildeu Ferreira, Escobedo, João Francisco [UNESP], Universidade Federal de Goiás (UFG), and Universidade Estadual Paulista (UNESP)

Subjects
Bowen ratio, Water use efficiency, Irrigation, Water balance
Abstract

Made available in DSpace on 2022-04-29T08:28:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-01-01 In the experimental area of the Department of Environmental Sciences (21.85° S; 48.43° W; 786 m), in the School of Agronomical Sciences, UNESP, Botucatu, SP, an experiment was carried out using peanut (Arachis hypogaea L), cv. IAC-TATU-ST, to quantify the crop daily water requirements. During the peanut crop cycle, the environmental variables, such as rainfall, air temperature, air relative humidity, soil matric potential, soil heat flux and radiation balance, have been registered continually. These measurements were used to calculate the daily crop evapotranspiration, by the Bowen ratio method. The water replacement required by the peanut crop was done the dripping irrigation system, oriented by a dynamic agrometeorological model that computes the entrance and exit of water in the soil. During the peanut crop cycle, 9.0 mm of water was used from sowing to emergence; 67.0 mm of water, in the growth stage; 166.0 mm, in the flowering stage; 124.0 mm in the final stage and 46.0 mm from physiological maturity to harvest. Oot of 412.0 mm of the total consumption, 246.0 mm of water was supplied by irrigation and 166.0 mm by the rain. The grain yield was 3.15 t ha-1 for 15% of humidity, and the water use efficiency was 0.764 kg m-3. Universidade Federal de Goiás, Campus Jataí, Jataí, GO Departamento de Recursos Naturais Faculdade de Ciências Agronômicas Universidade Estadual Paulista, Botucatu, SP Departamento de Recursos Naturais Faculdade de Ciências Agronômicas Universidade Estadual Paulista, Botucatu, SP

Published
2009

11. Mapeamento da fragilidade ambiental da bacia hidrográfica do Rio Doce (GO), utilizando tecnicas de geoprocessamento

Author

Pereira Cabral, Joao Batista, Rodrigues Da Rocha, Isabel, Perini Martins, Alécio, da Assunção, Hildeu Ferreira, Becegato, Valter Antonio, Pereira Cabral, Joao Batista, Rodrigues Da Rocha, Isabel, Perini Martins, Alécio, da Assunção, Hildeu Ferreira, and Becegato, Valter Antonio

Abstract

O objetivo deste estudo foi caracterizar e avaliar a fragilidade ambiental da área da bacia hidrográfica do rio Doce-GO, inserida na Região Centro Oeste do Brasil. É uma das últimas fronteiras agrícola do país. Utilizou-se o método proposto por Ross (1994), baseado em classes de declive. Utilizaram-se como indicadores da fragilidade ambiental, os fatores: declividade, erodibilidade, erosividade e uso e ocupação das terras. A agricultura mecanizada com o cultivo de soja e milho ocupa atualmente 54,52 % da área, cujos espaços anteriormente eram de pastagens e vegetação natural. A classe predominante é a de média fragilidade, com predominância de 65,26% da área total., The objective of this study was to characterize and evaluate the environmental fragility of the Rio Doce watershed-GO, located in the Midwestern region of Brazil. It is one of the latest agricultural frontiers of the country. The method proposed by Ross (1994), based on slope classes was used to this end. Environmental fragility indicators considered were: slope factors, erodibility, land use and land occupancy. Mechanized agriculture with soybean and corn cultivation currently occupies 54.52% of the area, in land previously occupied by pastures and natural vegetation. The predominant class is the medium fragility one, with a prevalence of 65.62% of the total area

Published
2011

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