Alterações na dinâmica de colônias de Atta sexdens rubropillosa Forel, 1906 (Hymenoptera: Formicidae) submetidas ao tratamento com iscas tóxicas

As formigas cortadeiras são consideradas pragas por causarem diversos prejuízos em áreas agrícolas e, por este motivo, há um crescente interesse em métodos variados de controle destes insetos. Atualmente, existem diversos métodos de controle conhecidos, mas o mais utilizado é o controle químico, que apresenta diferentes estratégias de formulação e modos de aplicação. O principal método químico utilizado são as iscas tóxicas, que tem a melhor eficiência e já são utilizadas em escala comercial. O presente trabalho teve como objetivo avaliar as alterações que ocorrem na dinâmica de colônias de Atta sexdens rubropilosa Forel, 1906 (Hymenoptera: Formicidae) submetidas ao tratamento com iscas tóxicas contendo os ingredientes ativos sulfluramida e hidrametilnona, as quais serão comparadas com uma colônia controle, que receberá isca sem ingrediente ativo. Para isso, foram utilizadas três colônias de A. s. rubropilosa, mantidas em laboratório, com aproximadamente 1000 mL de jardim de fungo cada. Elas foram dispostas em vitrais, interligados a dois potes plásticos, um para a câmara de forrageamento e outro para o lixo. Um dia antes de iniciar o experimento, todo o lixo foi retirado e as colônias foram deixadas sem o fornecimento de alimento. Após 24 horas sem alimentação, as iscas foram oferecidas na câmara de forrageamento de cada colônia. A colônia 1 recebeu 3g de isca sem ingrediente ativo; a colônia 2 recebeu 3g de isca contendo sulfluramida; e a colônia 3 recebeu 3g de isca contendo hidrametilnona. Durante 10 dias, foram avaliados aspectos como carregamento, incorporação e devolução das iscas, alterações comportamentais das operárias classificadas como sintomas de intoxicação, mudanças no aspecto físico dos jardins de fungo, como umidade e aparecimento de fungos contaminantes, e a extinção da colônia. A partir dos dados obtidos, foram feitas análises comparativas das atividades comportamentais...

Políticas Públicas de Resíduos Sólidos e a Coleta Seletiva em Regente Feijó - SP

This research was mainly focused on public policy analysis of solid waste, and the National Policy and State Solid Waste, as well as determining the performance of the Blue Green Municipality strategic project in relation to the management of municipal solid waste in Regente Feijó, São Paulo. The objective of this research was to analysis of the consequences of the deployment project of selective collection and integration of recyclable material collectors in an association of collectors, called the Association of Recyclable Material Collectors Rock, held in the city from the year 2008, with effective implementation in 2010. We analyzed the actions of the municipal government since the implementation of selective collection, to the development of the Association. The methodology used was literature concerning the issue; routine field surveys to monitor the activities in the landfill and association of collectors, collecting data from questionnaires appropriate to the research topic. We sought to examine old and new forms of urban solid waste management, the evolution of the historical process of this issue in the city and its social and environmental impacts, and the collectors the main social actors in this process. The complexity that addresses this issue was dealt with in this dynamic study, analyzing all parts involved

Estudo das propriedades mecânicas da madeira plástica

This work has in its outline the analysis of the mechanical properties of the composition of plastic residues, denominated “plastic wood”, aiming at establishing technical parameters for application of this material in substitution to the natural wood. Plastic-Wood is basically, a combination of several kind of plastic, previously selected, washed, dried and without metallic particles, which are agglomerated, extruded or introduced into a mold. The manufacturer can choose different formats and colors. During this monograph it can be observed the use of several kind of plastic, their mechanical properties and the plastic-wood production process. Also are presented features and applications of natural wood, in order to better compare their uses in several applications

Estudos de degradação de filmes de polietileno

A produção de lixo pela humanidade é inevitável, porém, o destino dos residuos sólidos e seu acondicionamento inadequado têm trazido graves problemas ambientais. Dentre os resíduos sólidos, os plásticos merecem destaque, pois cresceram significativamente em uso e descarte, totalizando 20% do volume mundial de lixo. Isto decorre de algumas das propriedades destes materiais, como durabilidade, resistência, leveza e baixo custo de produção. Nas grandes cidades brasileiras, 7% do lixo produzido correspondem a produtos de plástico em filme, geralmente usado em aplicações de curta duração, como o polietileno. Este material persiste no ambiente por décadas, sendo, portanto, resistente à degradação. Diversos destinos podem ser tomados pelo resíduo de polietileno descartado, como a deposição em lixões e aterros sanitários, incineração, reciclagem e biodegradação. A biodegradação pode ser definida como a degradação catalisada por atividade biológica, levando, no final do processo, à mineralização e/ou formação de biomassa. Na natureza, a destruição destes materiais se dá, na verdade, por meio da “degradação ambiental”, na qual atuam sinergeticamente a biodegradação, a fotooxidação, a termo-oxidação e a hidrólise. Neste sentido, desde os anos 1970, diferentes formulações foram propostas para otimizar a susceptibilidade do PE à degradação ambiental. Sabe-se que o PE está sujeito a sofrer mudanças quando exposto à luz ultravioleta e/ou ao calor, e que estas modificações podem alterar a resposta dos microrganismos no processo de biodegradação. Desta forma, este estudo analisou as modificações ocasionadas por tratamentos com luz ultravioleta, calor e exposição ao sol, bem como a resposta da microbiota natural do solo a estes tratamentos, através de análises de espectroscopia... (Resumo completo, clicar acesso eletrônico abaixo)

Gestão de resíduos sólidos domiciliares orgânicos: práticas e técnicas para a destinação final na cidade de Rio Claro - SP

The present work is the analysis of the practices and techniques currently used in the final allocation given to organic household solid waste in the city of Rio Claro - SP. As the major part of Rio Claro’s household solid waste is formed by the organic fraction, as well as in the rest of the country, this research proposes a study on what is done with that portion of the waste, its treatment and where finally destined, based on the National Solid Waste Politic, recently approved in 2010. With the use of this organic part, for example: as animal feed supplement or compost embodiment for the purpose of producing organic fertilizer, enables the decrease of the percentage of the total destined to dumps and landfills. This total percentage has already been reduced after the popularization of the beneficial recycling programs in Brazil, which are still growing. As cities and the purchasing power of its individuals grow, there is also a consequent growth of waste production by society. The household whether domestic solid waste are lower than Industrial Solid ( RSI ) waste for the production in million tons ( Mton ) quantities , however, those residues are more visible on a daily basis - in cities and periphery as well, due to the inadequate management, - and also offer , as well as industrial and agricultural wastes , several types of harmful effects to the population when managed incorrectly. Therefore, the research aims to assist in the study of Solid Waste Management (MSW) for efficient Urban and Environmental Planning in a midsize city. Thus, this project aims to analyze in the city of Rio Claro, how the allocation of these materials is done and whether these practices denote effective improvement regarding the proper management of waste, in the same way that the recycling chain would allow this effect

Catadores(as) e a metrópole: identidade, processo e luta

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Avaliação da viabilidade econômica da implantação de uma usina de triagem e compostagem na cidade de Rio Claro-SP

The question of the solid waste is without a doubt one of the biggest problems faced for the world-wide population in the present time, resulting in the call “collapse of the garbage”. In this direction that appears the composting, in the scope of the treatment of organic waste origin, that in Brazil, approximately correspond 50% of the generated volume. However, the rare plants of selection and composting (UTC) existing at least do not obtain auto-to support themselves, increasing to each day the number of deactivations, almost always related the financial questions. In this direction, the present research brings the analysis of the economic viability of the implantation of a UTC for the city of Rio Claro-SP, relating it with the thick organic composition sales, for the cultures of vegetables cultivated in a ray of 30 km of the study area. For in such a way, they had been carried through, calculations concerning the regional demand for organic composition, and the verification of the implantation costs and operation of the plant. The reached results had been the flow of box for the first year of functioning of the UTC, as well as the break-even point between the gotten expenditures and prescriptions. From this relation investment profitability, it was verified that the UTC is presented impracticable under the economic point of view.

Estudos das condições da disposição final de resíduos sólidos domiciliares no aterro sanitário de Cachoeira Paulista – SP

In this assignment, will be assessed the conditions of operation for the final disposal of household solid waste landfill in the city of Cachoeira Paulista-SP. The theme chosen for research is of great social importance therefore is directly related to the well-being of the people, sustainable development, environmental protection and public health. Everyone should be aware of the problems related to improper final disposal of solid waste of any kind. The objectives of the study were: analyse the conditions of operation of the landfill; verify the treatment technology of percolating liquids (slurry) generated in the landfill; examine whether the landfill obey the rules; which cities in the region depend on the disposal system, verify that there are flaws in the final destination of solid waste in the municipality and in the cities of the region. The research is primarily a bibliographic review, obtained by querying the database and virtual libraries. Technical visits were also held at the study site, to check spot the methodology employed in the operation of landfill This work concluded that for the period under study, the landfill was as a landfill site, therefore, in accordance with the rules of operation

Avaliação dos aspectos dosimétricos no tratamento de câncer de tireóide com Iodo-131

The 131I (radioactive iodine) is one of the most used radionuclides in nuclear medicine for diagnosis and treatment. The present study evaluates the dosimetric aspects related to radioiodine therapy after thyroidectomy in patients with thyroid cancer. The samples were studied with 50 patients undergoing treatment, by assessing the exposures of workers (nursing assistants, staff hygiene, medical and physical), the general public (accompanying and family members) and on the environment. To evaluate the workers, was made a survey of the environmental conditions of the room radioiodine and routines adopted by them during the treatment period. Estimating the dose equivalent per month for each employee, we observed that the maximum levels obtained for nursing assistants, the team of hygiene, medical and physicians were considered low in relation to the extent permitted by law. In order to assess the public, some situations have been suggested for the calculation of equivalent doses in which it was possible to verify the fundamental importance of isolating the patient in the 2 days first. Regarding the environment, the radioactive waste generated by patient had volume of 1.0 m3 and activity estimated at 0.91 mCi, taking a decay time for eliminating them about 75 days to reach the allowable value of 2 μCi / kg system of collecting garbage. Therefore, all radioactive waste removed from the patient's room should be sent to the warehouse for temporary storage of radioactive waste, located away from normal work areas

O trabalho dos catadores de materiais recicláveis de Presidente Prudente, São Paulo: um estudo aplicado na COOPERLIX e na coleta seletiva municipal

This work focuses on analyzing the organization of the Workers Cooperative Recyclable Products of Presidente Prudente (COOPERLIX) and selective collection of municipal service. Aiming to analyze the issue of solid waste and the work of collectors of recyclable materials in an organized Economic Development Outreach (ESS). Throughout the work was carried out theoretical approaches on the issue of solid waste, the precarious work of scavengers, some laws, among others, were conducted several field studies over the years 2011 and 2012 in COOPERLIX, with the realization meetings and debates on various subjects; tools were also used Geographic Information Systems mainly in the production of selective collection of municipal map, now at 100% of the urban area of Presidente Prudente. Finally, we carried out a comprehensive analysis of the situation of the productive and financial COOPERLIX during those two years, checking their capability and weaknesses

Indicação e avaliação de potenciais áreas para implementação de aterros sanitários municipais – Apuí/AM

About eighty percent of the Brazilian municipalities have their residues in environmentally unsuitable sites and socially insalubrious. In this context, in the year 2010, instituted the National Policy on Solid Residues, which aims to integrated management and management environmentally appropriate of solid residues in Brazil (JUCA, 2002).The problem of urban residues is related to its origin and production in the same way that the concept of inexhaustibility and reflexes of compromising the environment, especially the pollution of soil, air and water resources (LIMA, 1995). Seeking a better residues management in the municipality of Apuí / AM and continuing work already started, Plan Solid Residues Management of the Apuí / AM, this work came to propose a better environmental compliance in relation to solid residues compared to 12305/2010 law that established deadlines / timelines on some actions such as landfills and the consequent elimination of environmentally sound disposal of residues by 2014 and thus began a study of potential areas for the implementation of the landfill were evaluated taking into consideration technical aspects (soil, vegetation, climate, hydrography, etc), legislation and Google Earth imagery. The result of the work over the 6 areas proposed by the City Hall was the choice of AREA 4 as the most indicated for the implementation of the landfill for the city of Apuí, which has 18,325 inhabitants (IBGE, 2011); some considerations were made if a new area can be proposed by the city to implement the landfill

Uma proposta de resolução para problemas de roteirização de veículos baseada no algoritmo genético

The vehicle routing problem is to nd a better route to meet a set of customers who are geographically dispersed using vehicles that are a central repository to which they return after serving customers. These customers have a demand that must be met. Such problems have a wide practical application among them we can mention: school transport, distribution of newspapers, garbage collection, among others. Because it is a classic problem as NP-hard, these problems have aroused interest in the search for viable methods of resolution. In this paper we use the Genetic Algorithm as a resolution

Preparação e caracterização da casca de banana prata particulada para aplicação com reforço em compósito de matriz de PEAD

The waste, exaggerated and incorrect disposal of biomass are common practices in modern times where everything is disposable. However the growing concern with the nature and the environment compel man to give nobler destinations for these products through sustainability and recycling of waste. Banana peel is a residual biomass, which is not consumed. It generates tons of waste per week in São Paulo city. This trash is disposed in dumps and landfills, which could be reduced by using it as reinforcement in natural composites. The high density polyethylene (HDPE) is a polymer derived from the ethylene polymerization and is easily recycled. Which makes it a sustainable material. In the present work characteristics of the natural composite composed with banana peel and high-density polyethylene were studied. It was noted that removing the lignin present in the banana peel, the fiber introduces a significant improvement in thermal resistance. The preparation of composite was made with a ratio of 5% and 10% of reinforcement in comparison with polymeric matrix mass. Composites were thermally, mechanically and microscopically characterized. The addition of fiber in the polymer increased the mechanical strength of the composite. The fiber surface treatment with distilled water removed the amorphous material present in the fibers, improving significantly thermal stability and increasing crystallinity of the celullose. The addition of 5% fiber in mass to the polymer increased significantly the tensile strength and elasticity modulus for the composite. With 10% of fiber addiction there were also an improvement when compared with pure HDPE, but when compared with 5% composite the mechanical properties are slightly lower. This may be due to the fiber particle size, which are small and eventually become a hub of tension ... (Complete abstract click electronic access below)

Estudo da gestão de aterros sanitários através de consórcios públicos e públicos-privados

The growing population, purchasing power and changing the profile of Brazilian consumers are the facts to justify the increase in waste production in the country. According to the National Research Sanitation made by IBGE in 2000, Brazil produced 241,614 tons of waste per day, equivalent to approximately 90 million tons per year. This growth leads researchers to consider a better way to dump this material in order to mitigate the damage to population health and the environment. For this, one of the possible actions is the search for alternative disposal technological development, a possible solution being the construction of landfills. But many cities, especially those from regions of poor or agricultural base, do not always have sufficient resources and open spaces for the construction of a landfill as required by law. Fits like a context in which it operates as an alternative technology for inter-municipal consortia landfill and public-private partnerships in order to contribute to the sustainable development of cities. The law that regulates public consortia is the Federal Law 11.107 of April 2005, as the law that regulates and makes possible the Public-Private Partnership is the Federal Law 11.079 of 2004. Consortia are entities that bring together several municipalities, with or without the State and the Union to carry out joint actions that if were borne singly, not would achieve the same results or would lose a greater volume of resources, and would demand more time. The public-private partnership consist of one or more municipalities and a private company, selected by public tender, which becomes responsible for implementation, maintenance and operation of the landfill. This practice can performed on the model of concession, in which public administration is direct or indirect user, with or without installation and ... (Complete abstract click eletronic access below)

Aplicação de coagulantes naturais no tratamento de lixiviado de resíduos urbanos

With the constant increase in the municipal solid waste (MSW) generation, mainly due to the high consumption patterns, it becomes difficult to manage correctly the solid waste and thus minimize their impact on the environment. One of the most problems of the large amount of waste generated is the liquid originated from physical, chemical and biological decomposition process of organic wastes, with dark color and bad smell, called leachate: it can reach the soil, polluting the groundwater and the surface water. Therefore, this study aimed to investigate the process of coagulation/flocculation/sedimentation applied in the treatment of the leachate generated in the not controlled landfill of Presidente Prudente, Sao Paulo... (Complete abstract click electronic access below)