TEDE Coleção: Programa de Mestrado em Sistemas de Produção na Agropecuária
http://tede2.unifenas.br:8080/jspui/handle/jspui/6
Programa de Mestrado em Sistemas de Produção na Agropecuária2023-12-01T08:59:02ZBiodigestão anaeróbica de dejetos de suínos e aves associado ao uso de inoculantes
http://tede2.unifenas.br:8080/jspui/handle/jspui/259
Título: Biodigestão anaeróbica de dejetos de suínos e aves associado ao uso de inoculantes
Autor: TELES, Ismar Batista
Primeiro orientador: FLORENTINO, Ligiane Aparecida
Abstract: Several studies have been carried out aiming at the increase and production of biogas, being the association of substrates a very researched method. However, it is important to aggregate processes to optimize biodigestion. Thus, the addition of microorganisms aims to accelerate the onset of fermentation, reducing the period of bacterial colonization. Faced with this, it was objectified with this research was to analyze the dynamics and efficiency of anaerobic biodigestion, using two substrates, swine manure and co-substrate of excreta from laying hens associated to different inoculants, under the perspective of reduction of solids, coliforms and production of biogas. The experiment was conducted from November to December 2018, at the Federal Institute of Science and Technology Education of the South of Minas Gerais - Campus Machado, in the city of Machado – MG. The experimental design was a randomized block design, in a factorial scheme (2 substrates x 3 inoculants), with four replicates per treatment, thus totaling 24 bench biodigesters. Biodigestion was performed for 40 days at the average ambient temperature, 23°C. The efficiency of the biodigestion process was evaluated by reductions of total solids, volatile solids, chemical oxygen demand, biochemical oxygen demand, most probable number of total and fecal coliforms, as well as production and biogas and methane production potentials. The use of co-substrate of laying hens with swine manure promoted a higher initial biogas production when submitted to anaerobic biodigestion, but presented less efficient reductions in solids contents and in biogas production potential per kg of total solids. The levels of methane generated from swine + poultry and swine were 69% and 72%, respectively. No change was observed in the production of biogas due to the addition of microorganisms.
Instituição: Universidade José do Rosário Vellano
Tipo do documento: Dissertação2019-04-12T00:00:00ZRelação entre os atributos sensoriais com a região, altitude e pós-colheita de cafés especiais
http://tede2.unifenas.br:8080/jspui/handle/jspui/257
Título: Relação entre os atributos sensoriais com a região, altitude e pós-colheita de cafés especiais
Autor: OLIVEIRA, Dayene de Freitas
Primeiro orientador: REZENDE, Tiago Teruel
Abstract: The international market is increasingly demanding, seeking high quality coffees, appreciating the sensorial attributes of the drink. As a result, the productive sector in Brazil has been expanding its activities in the specialty coffee market. Defining coffee quality attributes is somewhat complex, since it includes local characteristics such as altitude, temperature, humidity and rainfall index from which the crop is planted. Simultaneously with the local characteristics, post-harvest factors such as the processing method and the type of drying are also responsible for the variation of the quality of the coffee beverage. The objective of this study was to evaluate the relation between coffee regions, altitude and post-harvest with the sensorial attributes of special coffees participating in the 2017 Coffee of the Year contest. The sensorial attributes final note and remaining taste were the ones that contributed the most to differentiate the samples of specialty coffees. The coffee produced in the region of Matas de Minas and Caparaó were the ones that received the highest scores for the sensorial attributes studied. Cafés produced at altitudes above 1400 meters showed a strong correlation with all sensory attributes, except with fragrance. The demucilated / pulped cherry processing and suspended terrarium drying were the ones that provided coffees with higher scores for most of the sensory attributes. The region influenced only the flavor characteristics of the coffees and altitude was the factor that contributed the most to the production of coffees with characteristic flavors or flavors.
Instituição: Universidade José do Rosário Vellano
Tipo do documento: Dissertação2018-10-26T00:00:00ZViabilidade técnica e econômica da permeável e irrigação em lavouras de cafeeiro arábica em formação
http://tede2.unifenas.br:8080/jspui/handle/jspui/253
Título: Viabilidade técnica e econômica da permeável e irrigação em lavouras de cafeeiro arábica em formação
Autor: ALVES NETO, Dorival
Primeiro orientador: SILVA, Adriano Bortolotti da
Abstract: The training stage of coffee is among the most costly practices for the producer, having the weed control, as well as the maintenance and / or replacement of water for plants, a significant role in plant development and production costs. Thus, the objective of this research was to evaluate the technical and economic viability of the permeable mesh in the formation of arabica coffee crops with irrigation. The experiment was installed and developed in the coffee sector of IFSULDEMINAS – Campus Muzambinho. The experimental design was randomized blocks (RBD) with 6 replicates. The treatments were: with mesh and with irrigation (WMWI); with mesh and without irrigation (WMWOUT); without mesh and with irrigation (WOUTMWI); and without mesh and without irrigation (WOUTMWOUTI). The plants used were of the cultivar Catuai Amarelo IAC 62 and the spacing adopted was 0.70 x 3.50 meters, totaling 720 plants. It was concluded that the WMWI coffee and WMWOUTI coffee presented the best coffee development results in all variables analyzed, compared to WOUTMWOUTI. In the coffee production, the reduction of manpower costs in the second year reached 60.61% for WMWI coffee and 65.61% for WMWOUTI coffee, WOUTMWI coffee was 13.64% higher for the same year. Each technology has generated in 2 years total expenses (manpower and investments), in the order of R$ 24,890,08/ha (WMWI), R$ 9,445,66/ha (WMWOUTI), R$ 19,336,86/ha (WOUTMWI), all above the WOUTMWOUTI, which had a cost with manpower the value of R$ 3,778,83/ha. It can be noticed that both the mesh and the irrigation showed favorable results, the first one by the reduction of the manpower, the second by the replenishment of water to the plants and both contributing to the development of the coffee, may become viable mechanisms for producers of our region, from the productive gains offered by the better development of coffee.
Instituição: Universidade José do Rosário Vellano
Tipo do documento: Dissertação2018-03-28T00:00:00ZAvaliação dos parâmetros sanguíneos e ventilatórios de trabalhadores rurais expostos a agrotóxicos
http://tede2.unifenas.br:8080/jspui/handle/jspui/250
Título: Avaliação dos parâmetros sanguíneos e ventilatórios de trabalhadores rurais expostos a agrotóxicos
Autor: OLIVEIRA, Luiz Fernando de
Primeiro orientador: SABINO, Paulo Henrique de Siqueira
Abstract: Agrochemicals are used in agriculture to increase crop yields, however the inadequate use of these products has become a threat to the public health, especially for rural workers, due to misinformation about their harmfulness. Thus, the present study aimed to evaluate the levels of intoxication of rural workers by pesticides throught the quantification of blood biomarkers and the activity of respiratory capacity. The chemical groups of the pesticides studied were organophosphates, carbamates and triazoles. The mean age of the exposed population was 39.95 years. The average contact time with pesticides in the exposed group was 17.87 years. A cross-sectional study was carried out with N = 130 rural workers divided into n = 65 (EXPECTED GROUP) and n = 65 (CONTROL GROUP) who did not have direct contact with pesticides in the last 12 months. To obtain this information, an epidemiological-occupational questionnaire was applied. The biological markers analysis was performed through blood collection. Regarding the evaluation of pulmonary function and capacity were performed through Spirometry and Manovacuometry devices. It is believed that the measured exposure measures are significantly associated with loss of pulmonary function, presenting a prevalence of obstructive and / or restrictive ventilatory disorders. These findings could indicate the vulnerability of the respiratory system to these contaminants, especially when not used to protective measures in the use of these substances, causing a loss of the quality of life of rural workers exposed to agrochemicals. In view of this scenario, it would be necessary to develop a public health program to monitor the work environment and monitor these workers.
Instituição: Universidade José do Rosário Vellano
Tipo do documento: Dissertação2018-09-19T00:00:00Z