Avaliação da poatencialidade da perlita natural e expandida na adsorção de metais

The contamination by metal ions has been occurring for decades through the introduction of liquid effluent not treated, mainly from industrial activities, rivers and lakes, affecting water quality. For that the effluent can be disposed in water bodies, environmental standards require that they be adequately addressed, so that the concentration of metals does not exceed the limits of standard conditions of release in the receptor. Several methods for wastewater treatment have been reported in the literature, but many of them are high cost and low efficiency. The adsorption process has been used as effective for removal of metal ions. This paper presents studies to evaluate the potential of perlite as an adsorbent for removing metals in model solution. Perlite, in its natural form (NP) and expanded (EP), was characterized by X-ray fluorescence, X-ray diffraction, surface area analysis using nitrogen adsorption (BET method), scanning electron microscopy and Fourier transform infrared spectroscopy. The physical characteristic and chemical composition of the material presented were appropriate for the study of adsorption. Adsorption experiments by the method of finite bath for model solutions of metal ions Cr3+, Cu2+, Mn2+ and Ni2+ were carried out in order to study the effect of pH, mass of the adsorbent and the contact time on removal of ions in solution. The results showed that perlite has good adsorption capacity. The NP has higher adsorption capacity (mg g-1) than the EP. According to the values of the constant of Langmuir qm (mg g-1), the maximum capacity of the monolayer was obtained and in terms of proportion of mass, we found the following order experimental adsorption: Cr3+ (2.194 mg g- 1) > Ni2+ (0.585 mg g-1) > Mn2+ (0.515 mg g-1) > Cu2+ (0.513 mg g-1) and Cr3+ (1.934 mg g-1)> Ni2+ (0.514 mg g-1) > Cu2+ (0.421 mg g-1) > Mn2+ (0.364 mg g-1) on the NP and EP, respectively. The experimental data were best fitted the Langmuir model compared to Freundlich for Cu2+, Mn2+ and Ni2+. However, for the Cr3+, both models fit the experimental data

Técnicas baseadas em etnografia e prototipagem no Design de interface de aplicativo mobile para gerenciamento acadêmico

Baseado na metodologia de design participativo, este artigo relata o processo de pesquisa e desenvolvimento de uma versão mobile de um sistema já existente para desktop e amplamente utilizado para o compartilhamento de informações acadêmicas em uma universidade federal do Brasil. A pesquisa foi realizada em duas etapas. Na ‘Etapa I’ foram realizados estudos baseados em etnografia envolvendo docentes e discentes: Grupo de Foco, Análise Contextual, Avaliação Heurística Participativa e Avaliação Cooperativa. Por meio dos resultados foi possível identificar funcionalidades e requisitos desejáveis, problemas de usabilidade de uma versão mobile já em processo inicial de desenvolvimento, bem como e elaboração de uma nova interface gráfica. Na ‘Etapa II’ foram avaliados modelos de interação por meio de protótipos especificamente projetados para testes no mecanismo de lançamento de frequência do sistema mobile que, em seguida, foram avaliados através de testes de usabilidade e questionário de satisfação do usuário.

A fazenda pública em juízo: a anulação de decisão administrativa definitiva a favorável ao contribuinte

El tema elegido para este estudio la materia disertación sobre la viabilidad de la Tesorería a buscar refugio a la corte anuló la decisión administrativa firme, dictada en lugar del procedimiento administrativo, fiscal, cuando tal decisión no es favorable a la Administración Pública Fiscal, o favorable para el contribuyente . El cálculo de la cuota a pagar se debe a las actividades administrativas relacionadas jurisdicción de la Administración Pública de la finca conocida como la evaluación de impuestos. En este sentido, la puesta en marcha, analizados desde la perspectiva del derecho administrativo, puede calificarse de acto jurídico administrativo. Para la constitución de la puesta en marcha es posible realizar tres pasos: a) un acto en la preparación para el tema de los impuestos - la revisión y evaluación, b) el acto administrativo de la liquidación del impuesto en sí o la aplicación de sanciones administrativas, el procedimiento c) el impuesto administrativo. Realizó la inspección y la investigación se ha iniciado para formalizar el acto administrativo del propio lanzamiento. Después de la puesta en marcha, con el homenaje que se está abierto a los contribuyentes dentro de la composición del tributo rechazo en libertad, que ofrecerá desafío para lanzar. Este paso es iniciar el "procedimiento administrativo tributario." La etapa procesal se caracteriza por ser un procedimiento de investigación o control de la legalidad de los actos administrativos en los que el contribuyente para mostrar su descontento con el lanzamiento de lo ya realizado. La evolución de los actos que lleva a cuestiones de procedimiento de especial importancia para esta tesis es que la decisión final sobre el procedimiento administrativo de impuestos o el control de la legalidad del acto administrativo de la liberación. Idea que se debe tener es que la decisión final es poner fin a fin o destino del impuesto procedimiento administrativo. Aquí están las preguntas de la tesis doctoral, por ejemplo, usted puede cancelar la corte real hacienda de la decisión administrativa dictada por el Consejo Administrativo de Apelación Reder, cuando decisum que conduzca a la privada? ¿Cuáles son los efectos de la decisión final? Con fuerza de cosa juzgada o impedimento administrativo? Se opone a la revisión por el poder judicial? La decisión administrativa es un acto administrativo? Puede ser cancelada o revocada por el Poder Judicial? Dada la divergencia en la doctrina y la jurisprudencia trata de resolver el problema que lo llevan a la solución definitiva al respecto. El autor llega a la conclusión de la imposibilidad, por regla general, y la oportunidad, como excepción a la Tesorería para solicitar la anulación del impuesto de la decisión administrativa final ante el Poder Judicial

Aspectos constitucionais da anulação de decisão definitiva da administração pública federal no processo tributário

Cet article traite de la possibilité de proposer le Trésor à la justice pour annuler une décision administrative définitive sur les questions fiscales. Il s'agit d'un sujet qui s'oppose au principe de la vérité matérielle - qui doit prévaloir en cas d'impôt - avec une certitude morale représentée par la chose jugée administrative. Commence par le processus administratif d'impôt comme une garantie constitutionnelle du contribuable, insérée dans le panorama d une compétence adoptée dans la législation brésilienne en tant que pilier de l'Etat de droit démocratique. Met l'accent sur la position du Trésor avant l'autorité de la chose jugée administrative, ce qui démontre la fragilité de La décision finale sur les questions fiscales. Décrit les effets de la révision (ou de l'annulation) dês actes administratifs, en particulier la libération de l'impôt et de la décision administrative qui vise à le confirmer. Enfin, nous discuterons de la composition et la légitimité du contentieux administratif, en conclusion, avec le soutien de la prévalence d'un fait important dans le cãs d'impôt, est non seulement possible, mais le Trésor devrait examiner leurs propres actions si nécessaire

Produção do espaço e transformações urbanas no litoral sul de João Pessoa - PB

This present work has as its objective the analysis of transformations relating to the production processes in the Southern littoral urban space of the city of João Pessoa PB. The research estimated that the urban space is the product, means and condition of the society which produces it. The object-area of this inquiry is constituted of five districts: Altiplano Cabo Branco, Portal do Sol, Ponta do Seixas, Penha and Costa do Sol. The urban expansion which occurs in this area is characterized by the appearance of sufficient contradictory space phenomenona. On the other hand, the launching of real estate products such as the horizontal closed condominiums, directed towards the upper class, and the occurrence of areas of irregular occupation, inhabited by lower socioeconomic class and with a great lack of infrastructure and basic urban services, revealing the social contradictions. Due to this, processes such as auto-segregation and segregation imposed beyond the precarious and delinquent inclusion, has become the determining characteristic of this part of the city in analysis. The study also takes into account the appreciation of the new urban environmental zoning of Altiplano do Cabo Branco and from this moment on, start the discussion about the tendencies of urban expansion in this area, due to the interests and strategies of the real estate sector and the prominent role of the government in the current valorization process of urban soil of the area. The presence of residuals of agricultural businesses indicates a typical picture of the peri-urban areas configuring what we observe today at the Southern littoral of João Pessoa

Faixas de proteção ambiental do Rio Pitimbu/RN: uma análise como subsídio ao planejamento e ordenamento do território

The Environmental Protection area sof Pitimbu river are important tools for planning and territorial land management. The Pitimbu river protection is aided in laws, so much of Federal stamp, as the Brazilian s Forest Code (Law No. 4771/1965), and in State s and City s Resolutions. So, this research begins in the State s Law No. 8426/2003interpretations, for being the most restrictive in the river's margin occupation and management. The objective is to analyze the applicability of the Environmental Protection areas of Pitimbu river, localized at the State of Rio Grande do Norte, considering environmental legislation and how to use this space by the man. Having specific goals for the discussion of the legislation s scope to this river; the identification of the types of soil s covering and evaluation the effectiveness of Law Nº.8426/2003, as protection instrument and land management. The river is characterized by its ecological importance and for feeding the Jiqui pond, an important reservoir that supplies 30% of drinking water to the east, west and south population sof the capital of the State. Pitimbu river is passing by a process of environmental degradation, originating from actions as deforestations of its ciliary forests by intensive agricultural practices; introduction of urban and industrial effluents leading to its contamination; increase of the pluvial drainage; erosion, sedimentation and discharge of urban waste , along with pressure for urban settlements along its banks. Under the methodological point of view is part of theoretical planning and land management research, and from a vision of social and environmental spaces. It was produced a survey map of the soil s covering, with 16 classes. Divided into coverage and disturbed natural covering. Using the 300 meters spatial limits of the Environmental Protection Strip, according to the State Law. The survey highlighted a higher percentage of classes disturbed, indicating man s interference in the balance of that system, as well as the lack of environmental actions. Leading to the degradation of riparian areas, and lack of conservation of water resources. Finally, it was considered that the strips of environmental protection are not effective as the preservation and territorial ordination

Evolução espaço-temporal da ocupação urbana sobre áreas naturais no município de Natal-RN

In this work the landscape morphodynamics was used to check the strength and importance of the changes carried out by man on the environment over time, in Natal-RN municipality. The occupation of partially preserved natural areas was analyzed, but environmentally fragile, such as riparian forests, vegetation on the banks of waterways, which play regulatory role of the water flow, and the dunes, which guarantee the rapid recharge of aquifers. The impacts of urban sprawl in Natal Southern and West zones Were identified and characterized, through a detailed mapping in the period between 1969 and 2013 the main Permanent Preservation Areas - PPA (banks of rivers and lagoons, and dunes remaining) and their temporal changes. For this were used aerial photographs and satellite imagery, altimetry data, and pre-existing information, which allowed the creation of a spatial database, and evolution of maps of impervious areas, evolution of the use and occupation and Digital Terrain Model (DTM) from contour lines with contour interval of 1 meter. Based on this study presents a diagnosis of the environmental situation and the state of conservation of natural areas, over the last 44 years, compared to human pressures. In general, it was found that the urban settlement has advanced about 60% of studied natural areas. This advance was growing by the year 2006, when there was a slowdown in the process, except for the Environmental Protection Zone (EPZ) 03, where the river Pitimbú and your PPA, which experienced a more significant loss area. The urban occupation affected the natural drainage and contributed to the contamination of groundwater Natal, due to increased sealed area, the release of liquid and solid waste, as well as the removal of riparian vegetation. Changed irreversibly the natural landscape, and reduced the quality and quantity of water resources necessary for the population. Thus, it is necessary to stimulate the adoption of use and protection of PPA planning measures, to the preservation of the San Valley Region inserted into the EPZ 01, and integrate more remaining dunes, in good condition, this EPZ, due to the importance of those remaining on the environment and the maintenance of quality of life. It is suggested, also, protection of catchment areas, such as PPA ponds and Pitimbú River. Finally, it is expected that this study can assist the managers in making decisions in urban and environmental planning of the municipality

Caracterização de água de lavagem de filtros em estações de tratamento de água de filtração direta

The water supply and treatment is considered as a great benefit considering that, if done efficiently, provides public health. However, considering the WTP (Water Treatment Plant) is an industry, with its inputs and waste generation, they must be constantly evaluated and monitored to verify the best and most appropriate way to process and dispose their waste, minimizing therefore the potential impacts to the environment. By volume, the most significant waste is the rapid filter backwash water. It is very common the disposal of this waste without treatment in water sources, which are used, for the most part, as a water supply source of a downstream population. This study evaluated quantitative and qualitative parameters in filter backwash water in three WTP - Itaitinga, Maranguape and Pacatuba, located in Ceará State, northeast of Brazil. It was found that the Maranguape WTP, in terms of treatment capacity, is the larger. The Itaitinga WTP is the one that consumes more water during filters washing. The Pacatuba WTP exhibited higher concentration of total suspended and settleable solids, COD and aluminum in the filters backwash water. It is noteworthy that the settleable solids and total suspended solids in all three WTP are above the effluent discharge standard recommended by Resolution 154/2002 of SEMACE (State Superintendent of Environment of Ceará). It was concluded that the filter backwash water from the study WTP exceeded the allowed values for legislation to be disposed directly into surface water bodies. It is suggested as an alternative to treat and recycle the filter backwashing water the construction of sludge settling ponds.

Aplicação do planejamento de experimentos no processo de desenvolvimento de produtos: pesquisa em uma sorveteria artesanal

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES

Mudanças na relação entre estado e mercado na produção de habitação de interesse social em Parnamirim-RN

The formulation of public policies, particularly those relating to social housing – SH -, follow a dialectical process of construction, which are involved in the figures of the State and tha Market.The combination of the State and Market remains in constant tension and struggle for power, which provides beyond products (policies, programs and projects), periods of crises and disruptions that can give rise to new institutional arrangements. It is possible to verify a change in the relationship between the State and the Market in the formulation of public policies of SH financing, justified by the context of the Brazilian economy growth, especially after 2003, year that began the first Lula Federal Government , and through the international financial crisis (in 2008). Thus, the State and the Real Estate Market has been undergoing a process of redefinition of their interrelations, articulating new arrangements, new scales of action and new logics of financial valorization of urban space. This peculiarity demanded the rapid thinning of speech and the proposals in the reformulation of housing policies, with the primary result within the pre-existing Growth Acceleration Program – PAC -, the release of My House , My Life – PMCMV -, established by Law 1.977 of the year 2009. Given the above, this research has as study object the relationship between financing public policies of SH, promoted by the State, and behavior of Formal Housing Market. It is believed that the established roles for each agent in the new housing finance model introduced with the PMCMV, have been adapted according to the needs of each location to make this a workable policy. It remains to identify the nature of these adaptations, in other words, what has changed in the performance of each agent involved in this process. Knowing that private capital remains where there is more chance of profit, we tend to believe that most of the adjustments were made on scale of State action. The recommendation of easing urban legislation taken by PMCMV points to how the State has been making these changes in activity to implement the production of social housing by this program. We conclude that in the change for PMCMV, the direct relationship for construction and housing projects financing began to be made between the Caixa Econômica Federal bank and the builders. The city was liberated from the direct interlocutor role between all actors involved in the production of SH and could concentrate on negotiating with the parties, focused on the effectiveness of SH public policies proposed by PMCMV. This ability and willingness for dialogue and negotiation of municipal government (represented by their managers), undoubtedly, represents a key factor for rapprochement between State and Real Estate Market in the City of Parnamirim.

Abordagem da ergonomia para avaliação do treinamento simulado das equipes de resposta à emergência em lançamentos de veículos aeroespaciais

This dissertation introduces a study that aims to analyze the simulated training of emergency teams and proposes recommendations for the current training system in order to improve the collective skills and resilience of these teams when facing possible critical situations, triggered by possible accident occurrences during aerospace vehicle launching operations in the Barreira do Inferno Launch Center in Parnamirim / RN. This is a field, exploratory, descriptive, explanatory, and a case study with a qualitative approach. Therefore, we adopted the ergonomics approach, using the situated method of ergonomic work analysis (AET), combining observational and interactive methods. The relevance of this research is characterized by the contributions to minimize the human and material hazzards resulting from possible accidents in these operations, the scientific contribution of the AET for simulated emergency training analysis in the launching operations of aerospace vehicles - which are complex and involve risk of accidents - and consequently, the scientific contribution to the current process of recovering the Brazilian Space Program. The survey results point to problems of various kinds in the current simulated training system which compromise the safety of the operations. These problems are grouped into four categories: technological, organizational, team training and from the activity itself, regarding more specifically communication and cooperation (among the team members and these ones with other sectors involved in the launching operation) and regarding the coordination of actions. We propose: a) a new training model, from the creation and application of scenarios based on postulated abnormalities, which could simulate real critical situations, in order to train and improve the skills of the emergency response teams especially in terms of communication, coordination and cooperation; b) restructuring and reorganizing the current training system, based on the formal establishment of a managing staff, on the clear division of responsibilities, on the standardization of processes, on the production of management indicators, on the continuous monitoring, on the feedback from trainees about the quality of the training and on the continuing and frequent training of emergency teams.

Gestão de resíduos sólidos domiciliares na cidade de Chibuto, província de Gaza Moçambique

This study analyzes the process of generation and management of solid waste in the Municipality of the City of Chibuto-Mozambique, drawing on the different approaches towards allocation and the socio-environmental implications resulting from this process and waste spatial distribution. To answer these objectives a questionnaire was administered to 367 households distributed in 14 neighborhoods of the city to elicit information on how solid waste is treated and what could be its impact on public health of the residents. From this perspective, the questionnaire gasp information from immigrant residents regarding both their origin, and socio economic condition. Apart from the questionnaire, semi-structured interviews were conducted to staff working on the Sanitation Sector, Urbanization Sector of the Chibuto Municipality, including the Health Service, and Women and Social Affairs. In addition to these data collection methods, for further discussion on the subject, the researcher draw a theoretical framework grounded through literature review, as well as systematic observation of the phenomenon. Research findings revealed that the solid waste collection services provided by the Chibuto Municipality do not follow the procedures laid down in the Regulation on Solid Waste Management, which advocates environmentally safe, sustainable, and complete management of waste. First, the services use open dumps for waste management. Secondly, waste collection does not cover all citizens living in the neighborhoods governed by the municipality, due to financial, technical, and organizational reasons. More importantly, the study found that due to this failure, more than 90% of households surveyed continue to use the traditional methods on waste management which include burning, or the burial techniques. On the other hand, some citizens throw waste on the streets, a method that threatens public health because it increases cases of diseases related to sanitation problems such as (diarrhea and malaria), especially in suburban and peripheral urban areas. Concerning with the above mentioned problems which constitute a real threat to the public health, some ways are proposed for more sustainable and spatially appropriate solid waste management through recycling, waste sorting, composting, reuse, and reduction of solid waste generation.

Otimização do controle do diagrama de radiação de radares de varredura para rastreio de foguetes usando o método GAMMC para o Caso Planar (GAMMC-P)

Launching centers are designed for scientific and commercial activities with aerospace vehicles. Rockets Tracking Systems (RTS) are part of the infrastructure of these centers and they are responsible for collecting and processing the data trajectory of vehicles. Generally, Parabolic Reflector Radars (PRRs) are used in RTS. However, it is possible to use radars with antenna arrays, or Phased Arrays (PAs), so called Phased Arrays Radars (PARs). Thus, the excitation signal of each radiating element of the array can be adjusted to perform electronic control of the radiation pattern in order to improve functionality and maintenance of the system. Therefore, in the implementation and reuse projects of PARs, modeling is subject to various combinations of excitation signals, producing a complex optimization problem due to the large number of available solutions. In this case, it is possible to use offline optimization methods, such as Genetic Algorithms (GAs), to calculate the problem solutions, which are stored for online applications. Hence, the Genetic Algorithm with Maximum-Minimum Crossover (GAMMC) optimization method was used to develop the GAMMC-P algorithm that optimizes the modeling step of radiation pattern control from planar PAs. Compared with a conventional crossover GA, the GAMMC has a different approach from the conventional one, because it performs the crossover of the fittest individuals with the least fit individuals in order to enhance the genetic diversity. Thus, the GAMMC prevents premature convergence, increases population fitness and reduces the processing time. Therefore, the GAMMC-P uses a reconfigurable algorithm with multiple objectives, different coding and genetic operator MMC. The test results show that GAMMC-P reached the proposed requirements for different operating conditions of a planar RAV.

O emprego do imalt como solução interpretativo-composicional em 3 obras autorais para violão

The task of expression undertaken by the performer falls largely on the right hand of guitarist. Aware of this fact, past and present masters have left their contributions to the development of right hand technique. It is clear, with rare exceptions, that educational and interpretative proposals, so far, have addressed the attack on the strings from the flexion of the fingers. This work, however, presents a technical resource called imalt, including in the attack action, the extension movement. Some techniques used in specific circumstances, such as the dedillo, the alzapúa, the tremulo and the rasgueado also use extension movements in the attack. They are put in perspective with the imalt providing a panoramic view of their individual characteristics. The use of imalt in the traditional guitar repertoire is exemplified in Villa Lobos, Ponce and Brouwer. Three pieces were composed for this work: Shravana, Alegoria and Vandana. Compositional techniques such as melodic contour applying and ostinato have been reviewed and used in the preparation of these compositions. A detailed record of compositional trajectory is presented. Therefore, the Model for the Compositional Process Accompaniment according Silva (2007) is used. Some events that have left the imalt in evidence are reported, as the launch and distribution of the Compact Disc (CD) Imalt, publishing scores and interviews. Finally is presented concluding comments, pointing possibilities opened up by this work.

Biologia reprodutiva de Mimus gilvus (Aves: Mimidae) em área de restinga no nordeste do Brasil

The thrush beach, Mimus gilvus (Aves: Mimidae) is a passerine widely distributed in Central and South America. In Brazil occurs mainly in the areas of the resting and vegetation near the beach. In southeastern Brazil this species has disappeared, mainly due to urbanization. Many attributes of their reproductive biology are unknown, especially in relation to reproductive success. During the years 2010-2011, 2011-2012 and 2014-2015 were made visits to the area of restinga forest in Centro de Lançamento da Barreira do Inferno (CLBI), located between the cities of Natal and Parnamirim-RN (5 ° 54'S 35 ° 10'W ) where they were made systematic searches to trying describe reproductive biology of the characteristics of M. gilvus, estimate their reproductive success using the Mayfield method, and identify the main factors that influence their reproductive success in environment the resting. For this, forty fifth active nests monitored were used. Only during the breeding season of 2011-2012 and 2014-2015 were made systematic visits to the study area. The reproductive period ranged August to March. Clutch size ranged from two, three and six eggs (n = 22). Broods of two eggs were more common, with an average of eggs laid per nest of 2 ± 0,51 (n = 20 nests). The incubation period was approximately 13 ± 1,9 days (n = 11 nests). The period of stay of the nestlings was approximately 11 ± 1,6 days (n = 9 nests). With approximately 11 days old the nestlings were able to leave the nest. The apparent success was 37,8% and the success estimated by Mayfield method was 26,6%. Predation was the main cause of loss of nests in the study area. The daily survival rates (TDS) were obtained from 0,9593 incubation and 0,9313 for nestling period respectively. Survival estimates for each period was 0,5827 for incubation and 0,4571 for nestling period. The cumulative average rainfall for each month influenced negatively the hatching rates of M. gilvus nests. In addition, the number hatch eggs among the most rainy season (rainy season) and the period of lowest rainfall (dry season) were different. The number of lost nests of M. gilvus was lower in scrubs than cactus, which may account for the largest number of nests of this species found in scrubs. Survival rates in nestling period were lower compared with the incubation period. The fact that the survival rates nests of M. gilvus be lower in the nestling period compared to the incubation period may result from increased activity of adults during this phase of the nest, which in turn would increase predation rates. M. gilvus seems to avoid the rainy season during their reproduction, concentrated most of their nests in periods of low rainfall.