Mestrado em Gestão Organizacional - PPGGO

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O agente de segurança prisional e a ressocialização sob a perspectiva do preso e da lei: um estudo na unidade prisional de Catalão–GO
(Universidade Federal de Goiás, 2015-12-07) Souza, Isabel Cristina Baptista de; Ba, Serigne Ababacar Cissé; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4768678D2; Chaves, Manoel Rodrigues; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4765640U8; Chaves, Manoel Rodrigues; Castilho, Ela Wiecko Volkmer de; Soares, Júlio César Valandro
The rehabilitation process of the individual in conditions of deprivation of liberty involves several variables. In this context, it is worth mentioning the role played by the Prison Security Agents (PSA) in that it may or may not contribute to a greater or lesser degree of efficiency with the reintegration / rehabilitation of the prisoner. This work it is a case study in Prison Unit Catalan-GO (UPCat), which has the overall objective to analyze the ASP contribution in the rehabilitation process of the prisoner in light of the perception of the imprisoned, the PSA and law. The study is divided into three investigative steps. First, the profile sociodemographic, academic and labor of ASP's of UPCat was obtained through the application of a questionnaire consisting of thirty-four closed questions, which after being collected and tabulated were subjected to statistical analysis Microsoft Excel 2007® and the results were presented by graphs. But the details of the perception of the PSA regarding the rehabilitation of prisoners through its routine operations in UPCat was obtained through the application of a questionnaire, consisting of thirteen open questions answered for ten PSA, the universe of thirty-eight UPCat. In turn, to analyze the perception of the prisoner on the PSA contribution in his rehabilitation, it was decided to carry out focus group with eight prisoners in the closed regime. The data collected with the questionnaire addressed to the PSA and the focus group held with inmates were analyzed through Bardin content analysis separately with three themes in common: 1) Role of the Prison Security Agent; 2) Relationship of the Prison Security Agent with the inmate and; 3) socialization of the prisoner. It was found that contribute to the rehabilitation of the prisoner is not among the legal duties of the ASP's as well, both as PSA inmates do not realize any of the PSA contribution in rehabilitation of the prisoner. However, it was found that the respectful treatment contributes to more humane conditions in the execution of the sentence.
Análise comportamental do direito: reflexões introdutórias acerca do direito penal
(Universidade Federal de Goiás, 2020-01-28) Neves, Fausto Teodoro; Silva, André Vasconcelos da; http://lattes.cnpq.br/3427056378409932; Cury, Lacordaire Kemel Pimenta; Silva, Renata Limongi França Coelho; Silva, André Vasconcelos da; Bueno, Marcos
The prison system in Brazil has unified national guidelines and specific federal legislation to be observed, namely the Law on Penal Executions. Each Federation Unit has its own prison system with its respective peculiarities, each functioning as a specific social group with a delimited and closed context, in the form of a functionally specialized social system. For a long time, scholars and scientists have been working on issues related to human behavior, especially with regard to the possibility of controlling such behavior. Adherents of the behaviorist school of behavioral analysis emphasize that it is possible to exercise control over human behavior through the adoption of reinforcement methods. In 1984, the Penal Execution Law was sanctioned, which brought advances to penal legislation by providing rules that made the reduction and reintegration of the convicted person into society viable. It was the Criminal Execution Law, No. 7,210 / 84 (LEP), which definitively ended the notion that prison is an instrument of violence and idleness. Its 204 articles provide for the rights and duties of prisoners. In the Penal Execution Law, penal remission is dealt with explicitly form, it is determined in articles 126 to 130, providing for the possibility of the convict serving a sentence in the closed or semi-open regime, the remission institute for work or for the study of part of the penalty imposed on him. There is discussion in the literature about the role of education and work within the prison system in the role of resocialization. There is a large group of criminal enforcement operators who see them in prisons as an occupational activity like so many others, being important only to help reduce idleness in jails. There are also defenders of the presence of formal education and work activities in prisons to the idea of resocialization, thus, the perspective that school and work activities help to combat idleness in prisons is also part of this discussion.
Análise da capacidade estática de armazenagem de grãos no Brasil no período de 1980 a 2015
(Universidade Federal de Goiás, 2016-09-26) Fernandes, Queli Silvério; Rosalem, Vagner; http://lattes.cnpq.br/9811805407497207; Rosalem, Vagner; http://lattes.cnpq.br/9811805407497207; Leal, Geraldo Sadoyama; Fassio, Deise Menezes Ribeiro
This study has as objective analyze the evolution of the static capacity of grain storage in Brazil by region, compared to the production, from 1980 to 2015. This is a research exploratory in descriptive character, and the technical procedure used was documentary analysis of public reports National Supply Company - CONAB. Data were analyzed in statistical program Statistical Package for Social Sciences - SPSS, version 22.0. Firstly for to analyze the evolution of static storage capacity and of grain yield per region in Brazil, from 1980 to 2015, were performed polynomial regressions. In the second analysis we observed the correlation between the static capacity and the grain production by region, from 1980 to 2015, using the Spearman correlation test, and, to analyze the occurrence of deficit or surplus storage by region was accomplished calculating percentage. Lastly was it described the present situation of the location of warehouses and the predominant type of storage unit in each region. Is Significant the increased static storage capacity of concentrate grains in the last 15 years, however, in disproportion with the rhythm to the rate of growth presented in grain production, presenting static capacity below the production in four regions, being them the Midwest, South, Northeast and North. Already the Southeast region has a higher static capacity than the capacity productive current. In Brazil it was observed since 2002 the increase in the deficit of static capacity of storage which in 2015 presented a value of 26%. In Brazil only 14% of the static capacity of storage is located on farms and most of the static capacity concentrates on units collecting and intermediate.
Análise da cultura da segurança entre os profissionais da unidade de terapia intensiva adulto de uma instituição de ensino
(Universidade Federal de Goiás, 2016-08-10) Gomides, Mabel Duarte Alves; Fontes, Astrídia Marília de Souza; http://lattes.cnpq.br/1047870220849400; Leal, Geraldo Sadoyama; Evangelista, Renata Alessandra; Cunha, Thulio Marques; Lucchese, Roselma; Ferreira, Anderson Luiz
In recent decades, patient safety has aroused much concern and awareness in the world after scientific evidence of high mortality rates due to health care failures. The degree of complexity related to health care, especially in hospitals, requires specialized health management focused on quality and patient safety. This study aimed to evaluate the culture of patient safety the assets of the professional adult intensive care unit (ICU) in the Clinical Hospital of the Federal University of Uberlandia (HC-UFU), Brazil. The study was conducted in a cross exploratory study model in order to evaluate the culture of patient safety among professionals, with data collection in the period June-July 2016. The sample consisted of all professionals in the adult intensive care unit of the following areas: medical, nursing, physical therapy, psychology, nutrition, and management. This sample was applied to the Safety Attitudes Questionnaire (SAQ) as a tool in the assessment of patient safety culture. The analysis of statistical data and testing was performed using SPSS software (Statistical Package for Social Sciences for Windows) version 21.0. In the inferential analysis, we used the chi-square test (χ²), t-test and analysis of variance (ANOVA). The analysis adopted significance level (α) of 5%. The strength of association between variables was assessed by calculating the prevalence ratio (PR) (95%). A total of 163 permanent professionals in the adult ICU of the HC-UFU, 144 were active in their functions in the range on the collection and 138 SAQ questionnaires were validated by being properly filled, resulting in a validation rate of 96.5%. Most participants were female (76.1%) and had long experience ≥ 5 years (63.0%). The results of the SAQ noted an overall average of the safety culture in the ICU less than 75 points (57.80 ± 23.39). This result was detailed on an analysis of the areas and items without domains not strengthened findings, but with higher scores 60 to Working Climate team, Job Satisfaction, Stress Perception and collaboration among team members, and other below 50 for Hospital Management Perception, Work Condition and communication failures. It was concluded that the general perception of ICU for patient safety culture demonstrated weakening of all the attitudes of professionals and especially the actions of management. Since managers are responsible for determining human working conditions and freedom of communication between the errors, promoting gain knowledge without reprisal or warnings.
Análise da gestão financeira pública dos municípios do sudeste goiano: um estudo sobre a administração pública municipal
(Universidade Federal de Goiás, 2019-10-16) Boareto, Márcio do Carmo; Rosalem, Vagner; http://lattes.cnpq.br/9811805407497207; Silva, Edson Arlindo; Silva, Washington Santos da; Rosalem, Vagner
The analysis of the municipal financial condition, through financial indicators, makes possible the examination of the financial health of a municipality, providing a global evaluation of the financial management and the performance of the public entity, it has seen the difficulties faced for the Brazilian municipalities in recent years, had mainly to a serious financial and fiscal crisis, to the economic contraction and problems related to the operationalization of prescriptions and expenditures, with low liquidity, high debt investment and prescription dependence of other federative entities. In such a way, the present study it had as objective to analyze the financial management of the 22 municipalities that make up the Southeastern Region of Goiás, from the financial condition, with the use of the methodology of wrap analysis of data for determination of the level of municipal efficiency and to verify which areas of expenditure they had been decided by these cities in the period of 2010 to 2018. The region counts well on developed sectors, with raised per capita GDP and presenting in the last high decade index of municipal human development. The present study it made possible to verify the goods, rights and resources are being used in the execution of obligations and municipal expenditures for a relatively long period, without the bias of a determined period related to an only management. The region presented high level of efficiency (95.98%), demonstrating that most of the municipalities possess adequate management of the financial resources, presenting different levels of financial independence and collection, with parcel reduced in the accomplishment of investments, good performances in the prescription accomplishment and execution of expenditures, considerable capacity of payment of short term, however it evidences related problems to indebtedness, mainly of long stated period, not demonstrating to constancy in operation of public debt and possible commitment for future financial management . The launching of provisions in the obligations of long stated period for future and uncertain payment raised the indebtedness, evidencing that the biggest problem of these subnational beings is related to the expenses with staff in detriment of the availability of bigger public investments. Another point refers to the areas of spending that are prioritized by these municipalities, with differences in the areas of education, legislation, culture, housing, industry and transport, demonstrating the representativeness of each expenditure, the impact on the level of efficiency and showing the potential for wealth generation in the region in an environment of economic stagnation and increased public debt.
Análise da influência da formação de alianças estratégicas sobre os processos logísticos da cadeia produtiva automobilística
(Universidade Federal de Goiás, 2018-02-07) Fernandes, Sara da Costa; Rosalem, Vagner; http://lattes.cnpq.br/9811805407497207; Rosalem, Vagner; Silva, Edson Arlindo; Silva, Washington Santos da
The transformations of the globalized business scenario challenge as organizations, adopt strategies as directed to the competitive differentials of the market. Strategic alliances are a way for organizations to adapt to changes in the economic environment through better market positioning, technological capacity building, cost reduction, access to new resources and investment viability. In this context, the Brazilian automotive sector is an important segment to be studied, due to its great importance is not economic scenario. Since the 1990s, this sector has been constantly evolving and has used cooperation agreements in the quest for competitiveness and greater profits. Industrial decentralization to other states and municipalities is one of the changes that have taken place in recent years. Two different automakers settled in Goiás, in 2015, with a possibility of greater gains and lower investments and logistical issues, identifying a need to adopt an alliance strategy, generating new logistics processes and a new structure of the productive chain in this sector. Thus, this research aims to identify and analyze what changes occurred in the logistics process before the formation of the strategic alliance between automakers in the non-Southeast Goiano auto industry. Non-theoretical concepts are presented on the automotive production chain, business logistic processes, strategic alliances, behavior structure and performance. For the purpose of the work carried out in a case study and an analysis of the documentary from the Value Stream Mapping (VSM) made available by one of the organizations studied. Through documentary analysis, spreadsheets were elaborated demonstrating as quantitative variables related to the logistic process before and after a strategic alliance between organizations. Through the analysis, we identify that as modifications in the logistics process after a merger between as organizations of the automotive sector as variations in the reduction without time, distance and inventory as relevant to reduce logistical costs of supply and freight of the productive chain . On the other hand, it is concluded that the formation of a strategic alliance brought, besides advantages for the logistic process, a reduction of costs and a better operational operation of the automotive production chain.
Análise da influência dos parâmetros de qualidade sobre a remuneração dos produtores de leite
(Universidade Federal de Goiás, 2016-09-27) Caetano, Frederico Mendes; Rosalem, Vagner; http://lattes.cnpq.br/9811805407497207; Rosalem, Vagner; http://lattes.cnpq.br/9811805407497207; Sadoyama, Geraldo; Oliveira Neto, Odilon José de
Despite the importance of the dairy industry chain to Brazil, producers still have difficulty to fit the parameters and quality terms of the Normative Instructions 51, 62 and paragraph 07 of the Ministry of Agriculture, Livestock and Food Supply (MAPA). Besides, the national productivity is much lower than the major world producers. Thus, the payment for quality is a strong influencer for the production of milk with quality, and the Somatic Cell Count (SCC) directly linked to mastitis, which is a major production reduction factor. Therefore, this paper has as the main objective to look for evidences that prove if the quality of refrigerated raw milk impacts the remuneration of farmer/dairy industry X, located in the south of the state of Goiás, regarding two specific aspects: the financial impact of paying for quality, based on indicators that show the total count of bacteria (TCB), somatic cell count (SCC), fat and protein according to Normative Instruction No. 07 of the Ministry of Agriculture, Livestock and Food Supply (MAPA) and the impact of CCS on production. This is an applied research, so by the descriptive statistical method and also the results and researches crossing technique regarding the theme analyzed, in order to verify possible evidence of the relation quality versus remuneration 26,8 thousands samples was analyzed, from November 2011 to May 2016. It was found that there is evidence of the influence of quality on the remuneration of the farmers/dairy industry X, regarding the goodwill, it was higher than the negative goodwill in the years 2011-2015, with an average income of R$ 2,087 million/ month, and negative only for CCS in 2016. The results of the payment for quality proved to be able to motivate the producer to produce milk with quality due to financial increase, causing the producer to add value to its raw material. Regarding the impact of CCS on the production, was found a reduction of 9.84% in the total of milk produced in those five years analyzed, with an average reduction in production of 2,663 million liters per month, resulting in a reduction in income by farmers/dairy industry of R$ 2,972 million per month, being significant the impact of CCS on production.
Análise da qualidade de serviços educacionais do curso de Administração de uma instituição de ensino superior privada: aplicação da escala Servqual
(Universidade Federal de Goiás, 2017-03-28) Mázaro, André Luís; Leal, Geraldo Sadoyama; http://lattes.cnpq.br/5245055964402823; Sadoyama, Adriana Santos Prado; http://lattes.cnpq.br/7882149675132977; Sadoyama, Adriana Santos Prado; Silva, André Vasconcelos da; Bueno, Marcos
Brazilian higher education, particularly the private sector, in face of the competitive market requires reformulations and adjustments for its survival in order to improve the quality of services provided to the academic community. The general objective of this research is to analyze and investigate the quality of educational services in a Private Higher Education Institution, from the point of view of the students, teachers and managers of the undergraduate institution in Administration. The methodology used for the elaboration of this research is a descriptive research, of an applied nature, through a survey of the type survey, based on a cross section with quantitative variables on the subjects involved and the data to be collected loco in the Institution through questionnaires with 22 variables within the five dimensions studied: tangibility, reliability, promptness, security and empathy, measuring the difference between expectations and performance of actions. In order to deepen the research lines, a tool was used to evaluate the perception and expectation of groups of individuals about quality, the Servqual, adapted to the educational services. First step was to the application of the expectation and perception questionnaires to verify how the individuals involved in the research see the quality of the educational services offered by the higher education institution. The second step was to tabulate the data collected with the help of Excel 2010 program from Microsoft and SPSS 20.0 from IBM to describe the data. Third step is the comparison of the data to verify the hypotheses raised if the students, teachers and managers of the undergraduate degree in Administration have the same perception of the quality of the educational services provided by the Catalan Higher Education Center. The results were the divergence of opinions for the gaps between the groups studied, teachers and managers for the five dimensions evaluated. The proposed research aims to contribute to the improvement of the educational services offered by the Institution of Higher Education for its representativeness in the region, as well as to direct managers to better understand the individuals involved in their organizational structure.
Análise da relação entre a divulgação de informações socioambientais e a composição da estrutura de capital das companhias abertas no Brasil
(Universidade Federal de Goiás, 2017-03-08) Silva, Márcia Helena da; Zago, Ana Paula Pinheiro; http://lattes.cnpq.br/6497179986944081; Ba, Serigne Ababacar Cissé; http://lattes.cnpq.br/7617200111865915; Ba, Serigne Ababacar Cissé; Zago, Ana Paula Pinheiro; Silva, André Vasconcelos da; Pereira, Vinícius Silva
The changes in the productive means due to the unregulated exploitation of resources led companies to invest in sustainability actions in order to maintain the sustainability of the business in the long term. However, investment in these actions by companies raises questions about the benefits they could achieve in applying such resources. One of the benefits cited from investing in sustainability actions is to improve the company's image vis-à-vis its stakeholders, increasing their credibility and making them more attractive to capital providers, which could facilitate fundraising. In turn, changes in the way of raising funds, either own or from third parties, change the capital structure of the company, giving it a new configuration and many are the determining factors that influence the way the company decides for the best composition of resources to be used. In view of the above, the question has arisen: the companies that disclose information about actions practiced to meet the premises of sustainable development (environmental preservation and social development) benefit from their funding of funds in order to change their capital structure? In this sense, this paper aimed to verify the existence of a relationship between the disclosure of social and environmental reports and the configuration of the capital structure of publicly traded companies in Brazil. Methodologically, the time series study with intervention models was used to verify the effects of the disclosure of the social and environmental reports on the composition of the capital structure, through the analysis of the third-party equity participation rates on the onerous liabilities, the cost of Third-party capital and the cost of equity, calculated on the basis of information disclosed in the companies' financial statements. Fifteen Brazilian publicly traded companies with shares traded on the BMF & BOVESPA were analyzed, and they disclosed social and environmental reports based on the guidelines of the Global Reporting Initiative. The results presented suggest that there is no relationship between the disclosure of the socio-environmental reports and the variation in the composition of the capital structure of the companies surveyed
Análise da terceirização nas instituições de ensino superior públicas no Estado de Goiás
(Universidade Federal de Goiás, 2017-05-15) Silva, Marcus Vinícius Moreira Castro; Silva, André Vasconcelos da; http://lattes.cnpq.br/3427056378409932; Silva, André Vasconcelos da; http://lattes.cnpq.br/3427056378409932; Chaves, Manoel Rodrigues; Bueno, Marcos; Leal, Geraldo Sadoyama; Almeida, Emerson Gervasio de
The present work intends to verify the outsourcing in public higher education institutions of the State of Goiás, in order to trace a general theoretical reference, passing through the evolution of the productive systems and the insertion of outsourcing as a management tool, as well as legislation has addressed this phenomenon. In the study, it was divided into two parts, the first one a bibliometric study that aims to evaluate the scientific production on the subject of outsourcing tabulating the results obtained to understand the directions of scientific production on the subject. There has been a growing increase in production in recent years, but still with a lot of conceptual differences. The second study focused on the materialization of outsourcing in the public higher education institutions of the State of Goiás by means of the analysis of the outsourcing contracts and the judicial processes resulting from this contract, where it can be verified the constant increase of the use of this tool of Management in these organizations, but also the failures in contracts that lead to judicial convictions, demonstrating that there is in fact precarious work, since there are losses to workers in these conditions.
Análise das interações interpessoais no trabalho entre gerentes, supervisores e operadores
(Universidade Federal de Goiás, 2014-12-15) Ferreira, Sueyde Géssika; Santos, Gleiber Couto; Santos, Gleiber Couto; Bartholomeu, Daniel; Montiel, José Maria
This study has as objective to assess interpersonal interactions of managers, supervisors and operators at work on a mining company at Catalão (GO), to check how these interactions correlate with satisfaction, mental health worker and affinity scale. The research was composed of twenty-two supervisors, five managers and twenty-two operators. Participants will be of varying age (25-58 years) and diversified company work time (1-33 years), however with at least one year now (time to familiarize yourself with the policies, procedures and training company). The instruments used were the Checklist of Interpersonal Relations-II (CLOIT-II), Satisfaction Questionnaire at Work S20 / 23, General Health Questionnaire - GHQ-12 and the Affinity Scale. The test results were tabulated using the Statistical Package for Social Sciences (SPSS). Thereafter, was performed the data analysis using descriptive and inferential statistics. As a result it was found that there is a correlation between certain types of interactions, mental health, job satisfaction and affinity scale. These correlations can change according to the hierarchical level.
Análise de sistemas fotovoltaicos para veículos elétricos experimentais de baixo custo
(Universidade Federal de Goiás, 2016-03-16) Neves , Gustavo de Souza; Stoppa , Marcelo Henrique; http://lattes.cnpq.br/1532505326645535; Moura Jr , José dos Reis Vieira de; Espinosa , José Waldo Martinez; Stoppa , Marcelo Henrique
Conventional means of transportation have a significant impact on people's lives, which depend on the current model to perform their routine activities. Families can expend up to 20% of their income on transport. On the other hand, internal combustion vehicles emit gases that impair nature, have low efficiency reaching a maximum 30% yield. In contrast, the electric vehicle has up to 90% efficiency and does not emit harmful gases directly. These factors contribute to the increase of financial and energy waste. This study aims to contribute to minimizing these impacts through analysis of an electric propulsion system of low cost, powered by photovoltaic source to be installed in a vehicle structure of PVC (Polyvinyl Chloride). The use of this renewable energy source enables the implementation of a photovoltaic power generation system, stored in lead acid batteries used in most of vehicles. After analysis of decision matrix, it was determined the most appropriate model that supports the proposal economically and evaluated electric DC motors found in conventional vehicles. These it was found that the engine of the windshield wipers can be used in vehicle propulsion system. To control the entire electrical system was used PIC micro controller, responsible for driving the motors through H bridge, consisting of MOSFET transistors. The simulation of this control system was held at the Proteus®.
Análise dos registros da propriedade industrial em instituições científicas, tecnológicas e de inovação brasileiras
(2021-11-05) Neto, Denísia Ribeiro
O conhecimento que é produzido no Brasil pelas Instituições Científicas e Tecnológicas - ICT públicas ou privadas, incentivadas pelo Governo e utilizados pelas empresas do setor privado, acontece pela propriedade industrial e gera resultados positivos na economia do país. A propriedade Industrial a é um ramo específico da propriedade intelectual. Com o aumento de atividades voltadas para inovação e tecnologia, cada vez mais o Governo federal e os estaduais buscam incentivar práticas voltadas para estes conceitos com políticas públicas que fortaleçam ainda mais os sistemas de inovações tecnológicas, sejam eles em ICTs ou empresas privadas, como observamos na evolução das políticas públicas. Esta dissertação aborda uma análise detalhada das políticas de incentivo e dos registros das propriedades industriais realizadas em ICTs brasileiras e como essa relação do inventor com as ICTs e suas áreas que viabilizam o processo de registro que são os Núcleos de Inovação Tecnológica – NIT interagem com o Instituto Nacional de Propriedade Industrial – INPI com o intuito de propor um processo voltado para o mercado externo viabilizando um processo de registro com maior eficácia para que estudos futuros retratem melhores resultados na produção científica brasileira, com um número maior de transferência tecnológica e licenciamento das tecnologias.
Análise formal no gerenciamento de competências: o emprego de ontologias e lógica de descrição
(Universidade Federal de Goiás, 2018-01-30) Dias, Luiz Gustavo; Costa, Vaston Gonçalves da; http://lattes.cnpq.br/5192533875584788; Costa, Vaston Gonçalves da; Stoppa, Marcelo Henrique; Vieira, Bruno Lopes
Nowadays to manage knowledge from corporate activities, competency management is increasingly effective in the process of defining organizational strategies. In this way, the present research had the purpose to use formal methods to verify if functions from positions, and competences coming from employees that occupy them, can interfere in the functioning of organizations. A long this lines, an ontology was developed using methodology 101, which had as its domain the educational sector, and served as an information base for the execution of queries elaborated from the description logic, in order to find possible inconsistencies as well as solutions. During the study of the case, were found inconsistencies related to qualification, training, stocking and compatibility of information from different sources that represented the same domain. As a result the research allowed the creation of correct knowledge and that can be used by managers, at different hierarchical levels, helping in the improvement of processes and decision making.
Uma análise sobre utilização de veículo híbrido na matriz de transportes da UFG Campus Samambaia: economicidade aliada à sustentabilidade
(Universidade Federal de Goiás, 2016-03-14) Bernardes Júnior, Edson; Stoppa, Marcelo Henrique; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4799293A1; Stoppa, Marcelo Henrique; Paula, Heber Martins de; Costa, Vaston Gonçalves da
The current world situation distinguishes itself through measures that preserve natural resources and they can be less harmful to the environment. This view could not be different for the auto industry, which in turn accounts for 5% of the brazilian GDP, employs over 1.5 million people and receives prominent position worldwide. Now exist a greater concern to produce more energy efficient vehicles and less polluting. Emerge hybrid vehicles as a possible solution to the chaos seen in large cities, appearing the car as the biggest polluter. However, some drawbacks, mainly linked to car price formation, still hinder the access of a majority of the population to the type of hybrid powertrain. In this sense this research analyzes to verify how behave a possible gradual replacement of vehicles for a vehicle fleet composed entirely by internal combustion vehicles for other hybrids. And then proposes such action in a higher education institution (IFES), the Federal University of Goiás (UFG), which was observed the main variables for six possible scenarios, where 20% of the existing fleet would be gradually replaced, for a sample that is 20.48%of the total to reach the completeness with hybrid vehicles. This proved that the hybrids are more efficient in all the proposals made, but that the high cost of purchasing replacement make it impossible for a short term, requiring more than six years of use.
Análise técnica da substituição parcial do agregado miúdo por rejeito magnético na produção de concreto
(Universidade Federal de Goiás, 2016-08-12) Mendes, Marcos Vinicius Agapito; Paula, Heber Martins de; http://lattes.cnpq.br/6511292268901783; Silva, André Carlos; http://lattes.cnpq.br/2682532729839545; Silva, André Carlos; Leal, Geraldo Sadoyama; Silva, Wellington Andrade da
The sustainable development becomes important to the processes and products of organizations. Considering this context, the construction and mining seek to innovate to reduce costs and environmental impacts. Alternative materials that replace the mains concrete components, one of the most used materials in construction, may innovate the market and ensure the sustainable development of organizations. This work studied the behavior of the mechanical strength of conventional molded concrete with partial replacement of fine aggregate by magnetic tailings from the phosphate rock processing Catalan/GO region. Characterization tests were performed for concrete components (physical and chemical), consistency of performance evaluation in fresh through frustum of abatement tests (slump test), compressive strength and tensile, inference permeability conditions from immersion absorption tests, measurement of possible magnetic properties and determining the percentage of increase in density, allowing set dosages similar final characteristics or better than the reference concrete. The results indicate the influence of the partial replacement of fine aggregate by magnetic reject the frustum of abatement in the results for concrete with moderate amounts of water. The immersion absorption rates accuse larger permeabilities in concretes with high rates of water. The density was slightly influence of replacement and concrete didn’t show magnetic properties. The results of mechanical resistance tests show similar to standard concrete the possibility of replacing the sand by magnetic reject at 5, 10 and 30%. There is still the possibility of forming with 20% replacement in concrete with low and moderate amounts of water, showing results of mechanical strength higher than all other proposed dose in this study.
Análise técnica da substituição parcial e total do agregado graúdo por estéril escalpado de mineração destinado a fabricação de concreto
(Universidade Federal de Goiás, 2018-06-27) Lopes, Diego Faleiros; Silva, André Carlos; http://lattes.cnpq.br/2682532729839545; Silva, André Carlos; Lobato, Luanna Lopes; Paiva, Ed Carlo Rosa
Although construction in Brazil faces an economic recession since 2014, there is still a high demand for raw materials for construction, such as gravel and sand. The price of materials has increased in recent years, especially when basic products are used for the agriculture industry, since 70 to 80% of the volume of concrete is composed of aggregates of gravel and sand. In 2014, 740 million tons of gravel and sand were consumed in Brazil in construction, while in 2015 the consumption was reduced by 519 million tons. To achieve sustainability it is very important to adopt innovative raw materials, with high quality, low price and environmental impact in your production chain. Mining, in its process of mineral processing, is responsible for generating large quantities of waste without utility and economic value, are highly productive and cause environmental impacts. CMOC International, located in southeastern Goiás, is responsible for producing an approximate volume of 2800 t / day of scalp sterile, excavated materials, generated by the activities of extraction (or tilling) without undercutting of the mine. Thus, the objective was to conduct characterization tests, according to ABNT NBR 7211/2009 of the scaled sterile material of the niobium ore processing industry, and of the aggregate by sterile scalpel and to search for new replacement paths for materials in the production of concrete, with this the amount of environmental resources and the commercialization of a new product through an economic analysis. The classes were classified by means of different types of concrete data molding during the abatement phase, 25, 50, 75 and 100% substitution for the evaluation of productivity, compression and traction, immersion absorption, voids index, mass specific, alkali-aggregate verification. The concretes obtained promising results in the tests, reaching them with the intention, because the material presented characteristics.
Análise técnica do potencial do óleo de Pinhão manso (Jatropha Curcas L.) como coletor na flotação de minerais
(Universidade Federal de Goiás, 2017-06-01) Moraes, Izabela Letícia Almeida de; Silva, André Carlos; http://lattes.cnpq.br/2682532729839545; Silva, André Carlos; Cara, Diego Valentin Crescente; Fernandes, Nilson José
Brazilian soils present acidity and in some parts are deficient in nutrients such as Nitrogen (N), Phosphorus (P) and Potassium (K). For the soil to be arable it is indispensable the artificial fertilization. Brazil is known worldwide for being a major producer of grains, according to the National Company of Supply (CONAB), assuming the position of the second largest soybean producer in the world in the harvest years 2015/2016. Apatite is the main natural source of phosphorus recognized as a raw material for the manufacture of fertilizers. The origin of the phosphate rock in Brazil is predominantly igneous, presenting a mineralogy containing silicate and carbonate mineral particles. Due to these gangue minerals present in the phosphate rock the flotation process becomes indispensable during the processing, to separate the apatite from the contaminants and to obtain the minimum level of impurities so that the fertilizers are produced to the required specifications. The difficult separation of the silica-carbonate ores from apatite occurs in the similarity of surface chemistry. The collecting reagent is used in the flotation process to aid in the separation of barley ores, in which the fatty acids, among them the saponified fatty acids, are those traditionally used, and the fatty acids obtained from vegetable or animal oil are matter Collector master prime. Jatropha curcas L., known as jatropha (Jatropha curcas L.), has been arousing national interest in recent years because it is a species with excellent oil quality. The cultivation of this oleaginous species occurs in several Brazilian regions, is a perennial plant and resistant to several variations of soil and climate. Jatropha stands out for the production capacity of its oil, which reaches 50% of its seeds, and for the lipid composition rich in fatty acids; Its major acids are linoleic, oleic, and palmitic. This study aims to evaluate the selectivity of the jatropha oil used as collector in the apatite, calcite and quartz flotation. And to be used as a collector the jatropha oil was characterized and tested in two methods of saponification, and the plant species was saponified at a temperature of approximately 90 oC so that in the other method the oil was saponified at room temperature. The mineral samples were chemically analyzed by X-ray fluorescence, scanning electron microscope (SEM) images, X-ray dispersive energy (EDS) spectrometry and potential zeta measurements. The test conditions were obtained using the concentrations of 1.0; 2.5; 5.0; 7.5; 10.0 mg / L in pH's 8, 9 and 10. In order to evaluate the performance of saponified jatropha oil, tests were carried out under the same conditions with the industrial collector FLOTIGAM 5806 from Clariant. The results show that cold saponified jatropha oil (PMSF) was better than hot saponified jatropha oil (PMSQ) and, when compared to the Flotigam, the results showed a similar performance. The PMSF and PMSQ collectors showed selectivity for apatite and calcite and for quartz collectors did not achieve significant recovery of the mineral. Thus, it can be concluded that jatropha oil as a collector has a potential for apatite flotation.
Análise técnica e econômica do uso do óleo da polpa de macaúba (Acrocomia Aculeata) como coletor na flotação
(Universidade Federal de Goiás, 2016-09-13) Pachêco, C. A. T.; Silva, André Carlos; http://lattes.cnpq.br/2682532729839545; Silva, André Carlos; Fernandes, Nilson José; Leal, Geraldo Sadoyama
The aim of this work was to evaluate the potential of macaúba’s pulp oil as anionic collector in flotation of apatite, comparing with industrial sinks (FLOMIN C9012 and FLOTIGAM 5806). Macaúba’s pulp oil was submitted to chemical characterization, with the determination of the levels of acidity and saponification, in addition to infrared analysis. The minerals were submitted to chemical characterization by x-ray fluorescence (FRX) mineralogical, by x-ray diffraction (DRX) and scanning electron microscope (MEV) with energy dispersive spectrometry (EDS). Zeta potential measurements were made also of minerals in solution of electrolyte indifferent (NaCl). The collectors were previously subjected to saponification by two methods, one hot and one cold. Microflotação tests were done in modified Hallimond tube with the use of pure minerals of apatite, calcite and quartz, varying the pH and the concentrations of the collecting solutions. Assessed the saponification method, times of conditioning and flotation, the recovery from the collectors, the selectivity between the minerals and the influence of pH. It was observed that the methodology of saponification by cold method proved to be more suitable. 7 min conditioning and flotation 1 min were more favorable times. Only macaúba’s pulp oil hit the recovery of 90 % established for the smallest reagent concentrations, in the three pHs. The reagents FLOMIN C9012 and FLOTIGAM 5806, reached the desired recovery using higher dosages to pick up. The apparent selectivity OPMSF introduced between the mineral apatite, calcite and quartz for the three pHs tested, and concentrations of 1.0 and 2.5 mg/L. Gave a consumption of about 842 g/t, concentrated to OPMSF and FLOMIN C9012 and 2105 g/t of concentrate to 5806 FLOTIGAM. The results of microflotação in Hallimond modified tube indicated that macaúba’s pulp oil can act satisfactorily in the flotation of apatite. The economic analysis showed that in addition to gains against the cost of industrial collectors the OPMSF has advantages over the volume of consumption to FLOTIGAM 5806.
Análise técnico-econômica da mistura das farinhas milho, milheto e sorgo como depressor de nióbio da flotação de carbonatos
(Universidade Federal de Goiás, 2021-04-23) Silva, Luís Alberto; Silva, Elenice Maria Schons; http://lattes.cnpq.br/3583927607917106; Silva, André Carlos; http://lattes.cnpq.br/2682532729839545; Silva, André Carlos; http://lattes.cnpq.br/2682532729839545; Silva, Elenice Maria Schons; http://lattes.cnpq.br/3583927607917106; Oliveira, Michelly dos Santos; Sousa, Débora Nascimento
Flotation is an operation that promotes the selective separation of minerals with different superficial characteristics through the addition of chemical reagents. Cornstarch is the most widely used depressant reagent in the Brazilian mineral industry due to its wide applicability and market availability. This reagent is purchased by companies at relatively high prices, since corn production in this country is mainly intended to animal feed and human consumption, followed by exportation. The objective of this work was the formulation of an alternative depressant, based on the mixture of flours from two more sustainable botanical sources, sorghum (Sorghum bicolor (L.) Moench) and millet (Pennisetum glaucum (L.) R. Br), as a way of reducing dependence on cornstarch. The methodology consisted of obtaining, preparing and characterizing mineral, sorghum, and millet samples, followed by flotation tests and finishing with an economic analysis. Sorghum and millet grains went through stages of cleaning, drying, packaging, storage, grinding, and magnetic separation. Flours had their lipid content measured and the starches were extracted from them in order to characterize grains parameters and to determine the yield of this stage. The ore used came from Niobras, a company that extracts and process niobium ore in the city of Catalão, Brazil, and corresponded to the carbonate flotation feed. Samples of the ore were characterized by pycnometry, particle size analysis using laser diffraction, SEM and XRF. Bench flotation tests, in rougher stage, were performed in a Denver cell, following Niobras operational parameters. Lioflot® 502-A was used as collector and StargillTM 6172 (a cornstarch) was used as benchmark. The mixtures of the flours were proposed according to a mixtures simplex lattice design. The average extraction yield of sorghum and millet flours were 28.72 ± 6.70% and 26.62 ± 4.05%, respectively. The average lipid content of the sorghum and millet flours were 3.47 ± 0.002% and 7.62 ± 0.001%, respectively. The ternary mixtures had an average Nb2O5 metallurgical recovery similar in the sunken material (approximately 54%) in the flotation tests. The same metallurgical recovery was observed for the binary mixtures composed by 25% / 75% and 75% / 25% (sorghum / millet). In the other hand, the binary mixtures composed by the 50% / 50% stood out in relation to the afore mentioned results, with an average Nb2O5 metallurgical recovery of 63.54%. The highest Nb2O5 metallurgical recovery was obtained with sorghum flour (80.75%), similar to the results (80.95%) found using the depressant industrially adopted at Niobras, StargillTM 6172. Therefore, a lower dosage of sorghum flour could be a potential substitute for cornstarch in this stage of Niobium processing, obtaining a similar result of metallurgical recovery of medium Nb2O5 in the sunk material, as well as a result close to mass recovery and with a higher Nb2O5 grade.