Instituições, agricultura familiar e crédito rural: avaliação de resultados do Pronaf B nos territórios rurais do Rio Grande do Norte

Broadly anchored on Institutionalist literature this dissertation seeks to answer: Why rural credit granted to farming families in Rio Grande do Norte, Pronaf group B, has shown positive results in some territories while in others the same results are insatisfactory? Considering formal rules are the same, then why such results are so distinguished? This research supports the fact that these results are a direct consequence of the quality of institutions defined as longstanding social rules established and built in social interactions. For institutions one understands; organizational structures, formal and non-formal rules, social trust, thinking behaviors and its evolution as well as routines. Using Pronaf Rural Credit as a background this study measures and compares results obtained in the rural areas of Seridó, Sertão do Apodi, Mato Grande, Assú-Mossoró, Trairi, Potengi and Alto Oeste. The dimensions of measurement considered were: economics, social and guarantee of transparency. The study considers a sample of 402 Group B farming families. It also elaborates a socio-economic profile of these families in the considered areas and underlines the main causes for defaulted loans, difficulties to improve family income and results of access to Pronaf B credit line, as well as it proposes solutions to surpass obstacles to improve the efficiency of this credit line

Padrões cariotípicos em tetraodontiformes (Osteichthypes) :redução genômica e mecanismos de diversificação

The Tetraodontiformes order is composed for about 400 species of fish, distributed in ten families, with circuntropical distribution. The morphologic diversity of each family reflects in, part, the different levels of specialization. This group represents an ancestry after-Perciformes and constitutes the last branch of the diffusion of the Teleósteos, occupying a position of prominence. The phylogenetics relationships of the Tetraodontiformes exist diverse works examining and, in all, these families are recognized as groups brothers, being Diodontidae next to Tetraodontidae and Balistidae next to Monacanthidae. Although it possesss a representative number of species, the works involving of the families Balistidae and Monacanthidae are few exemplary, especially species of oceanic islands. In this work cytogenetic studies in five species had been analyzed Cantherhines macrocerus, Cantherhines pullus (Monacanthidae), Melichthys niger (Balistidae), Sphoeroides testudíneus (Tetraodontidae) and Chilomycterus antennatus (Diodontidae); through conventional coloration, Ag-NORs and C banding. Ahead of the different karyological trends of evolution presented by the Tetraodontiformes, the present work also searched to verify the relation existence enters the total size of the chromosomes with the amount of DNA in these groups of Tetraodontiformes. For such, they had been correlated the total size of the chromosomes of these species, with values of content of available DNA in literature. The cytogenetics analyses for the species C.macrocerusJ C.pullus (Monacanthidae) and M.niger (Balistidae), had disclosed 40 chromosomes, all acrocentrics. All possess only one pair of NORs and pericentromeric heterochromatin. For S.testudíneus the found dyploid number was equal 2n=46, with NF=78 (16m+18sm+8st+4a), while that for C.antennatus it possesss 2n=50, with NF=76 (4m+22st+24a). Both species possess simple NORs and pericentromeric heterochromatin blocks. In M.niger, the presence of positive marking (heterochromatin and NOR) in the secondary constriction in the second chromosomic pair suggesting the occurrence of a rearrangement, possibly a fusing involving these homologous ones, indicating that these events had been important for the establishment of the karyological history of this group. A maintenance of the chromosomic constancy found in the populations of C.macrocerus (Monacanthidae) and S.testudineus (Tetraodontidae) perhaps if must for the aiding of the gene flow through oceanic chains. These data contrast with the differentiated kinds of chromosomes of C.antennatus between the Northeast coast and Southeastern, suggesting that the ecological standards of each species, added to the conditions of the marine environment, can be responsible for the karyological delineation of each species. The found characteristics for the species C.macrocerus, C.pullus, M.niger, S.testudineus and C.antennatus add it the available data for other species of Tetraodontiformes. From the data gotten in the present study, it can be inferred that the DNA content possesss direct relation with the total length of the chromosomes

Infância na publicidade: um estudo sobre o trabalho de crianças na publicidade na cidade de Natal-RN

In Brazilian scene the child labor is a serious and relevant theme regarding issues that involve infancy, arousing the interest and concerning of public and private institutions, and organized civil society. Thus, the child labor is forbidden by the law, considered that the child worker have a distinguished life experience, especially because it is demanded them the early mature of some skill, generating implications on their physical, emotional, cognitive, social and psychological development. Observing those issues, we proposed think the child labor, over and above those considered the worst forms of one and more found in literature, what lead us to think the child labor in the advertising. In that way, this research aimed to investigate the insertion and development conditions of children who work in advertisements, and the possible effects on their lives in the face of that insertion. Participated of this study: three advertising agencies, six video producers companies, one child model s agent and five children with their respective families. Those children were four boys and two girls, with ages between seven and eleven years old, which one that have accomplished four or more advertisements, in Natal city, Rio Grande do Norte. Based on social-historical perspective, we used the semi-structured interview as methodological instrument, which underlays the comprehension of the data obtained in field research processes. This study revealed that when children are inserted in the advertising activities they are submitted to irregular and adverse work situations, what occurs in others productive activities mentioned in the literature. The data still exposed that the family is the main responsible to the children insertion in the advertisement work; moreover, there is an ambiguousness of wishes in relation of that activity. On the other hand, we realized that the legal content concerning to the child labor forbidding, carries contradictory aspects in face of the ECA s 149 article, that one, under some conditions, allows that a child take part in the activities of advertising context. This highlights the necessity of a rigorous evaluation of the children insertion in the advertising, in order to ensure the whole children and adolescents protection. This study put in evidence the complexity that involves the child labor in this context, mainly, due to the exposition and manipulation of the childish image on the media. Besides, we understand that the discussion on this subject should be stimulated and, therefore, enlarged this on over and above those considered the worst forms of child labor

Reforma a vapor catalítica do metano: Otimização da produção e seletividade em hidrogênio por absorção in situ do CO2 produzido

Topics of research related to energy and environment have significantly grown in recent years, with the need of its own energy as hydrogen. More particularly, numerous researches have been focused on hydrogen as energy vector. The main portion of hydrogen is presently obtained by reforming of methane or light hydrocarbons (steam, oxy, dry or auto reforming). During the methane steam reforming process the formation of CO2 undesirable (the main contributor to the greenhouse effect) is observed. Thus, an oxide material (sorbent) can be used to capture the CO2 generated during the process and simultaneously shifting the equilibrium of water gas shift towards thermodynamically more favorable production of pure hydrogen. The aim of this study is to develop a material with dual function (catalyst/sorbent) in the reaction of steam reforming of methane. CaO is well known as CO2 sorbent due to its high efficiency in reactions of carbonation and easy regeneration through calcination. However the kinetic of carbonation decreases quickly with time and carbonation/calcination cycles. A calcium aluminate (Ca12Al14O33) should be used to avoid sintering and increase the stability of CaO sorbents for several cycles. Nickel, the industrial catalyst choice for steam reforming has been added to the support from different manners. These bi-functional materials (sorbent/catalyst) in different molar ratios CaO.Ca12Al14O33 (48:52, 65:35, 75:25, 90:10) were prepared by different synthesis methodologies, among them, especially the method of microwave assisted self-combustion. Synthesis, structure and catalytic performances of Ni- CaO.Ca12Al14O33 synthesized by the novel method (microwave assisted selfcombustion) proposed in this work has not being reported yet in literature. The results indicate that CO2 capture time depends both on the CaO excess and on operating conditions (eg., temperature and H2O/CH4 ratio). To be efficient for CO2 sorption, temperature of steam reforming needs to be lower than 700 °C. An optimized percentage corresponding to 75% of CaO and a ratio H2O/CH4 = 1 provides the most promising results since a smaller amount of water avoids competition between water and CO2 to form carbonate and hydroxide. If this competition is most effective (H2O/CH4 = 3) and would have a smaller amount of CaO available for absorption possibly due to the formation of Ca(OH)2. Therefore, the capture time was higher (16h) for the ratio H2O/CH4 = 1 than H2O/CH4 = 3 (7h) using as catalyst one prepared by impregnating the support obtained by microwave assisted self-combustion. Therefore, it was demonstrated that, with these catalysts, the CO2 sorption on CaO modifies the balance of the water gas-shift reaction. Consequently, steam reforming of CH4 is optimized, producing pure H2, complete conversion of methane and negligible concentration of CO2 and CO during the time of capture even at low temperature (650 °C). This validates the concept of the sorption of CO2 together with methane steam reforming

Uma abordagem anotativa para gerência de variabilidade em linhas de processos de software: concepção, implementação e avaliação

Nowadays, the importance of using software processes is already consolidated and is considered fundamental to the success of software development projects. Large and medium software projects demand the definition and continuous improvement of software processes in order to promote the productive development of high-quality software. Customizing and evolving existing software processes to address the variety of scenarios, technologies, culture and scale is a recurrent challenge required by the software industry. It involves the adaptation of software process models for the reality of their projects. Besides, it must also promote the reuse of past experiences in the definition and development of software processes for the new projects. The adequate management and execution of software processes can bring a better quality and productivity to the produced software systems. This work aimed to explore the use and adaptation of consolidated software product lines techniques to promote the management of the variabilities of software process families. In order to achieve this aim: (i) a systematic literature review is conducted to identify and characterize variability management approaches for software processes; (ii) an annotative approach for the variability management of software process lines is proposed and developed; and finally (iii) empirical studies and a controlled experiment assess and compare the proposed annotative approach against a compositional one. One study a comparative qualitative study analyzed the annotative and compositional approaches from different perspectives, such as: modularity, traceability, error detection, granularity, uniformity, adoption, and systematic variability management. Another study a comparative quantitative study has considered internal attributes of the specification of software process lines, such as modularity, size and complexity. Finally, the last study a controlled experiment evaluated the effort to use and the understandability of the investigated approaches when modeling and evolving specifications of software process lines. The studies bring evidences of several benefits of the annotative approach, and the potential of integration with the compositional approach, to assist the variability management of software process lines

Atuação dos profissionais no atendimento às famílias nos centros de atenção psicossocial

This study aimed to evaluate the work of professionals to care for families in Psychosocial Care Centers ( C APS) of Rio Grande do Norte ( RN), from the roles and functions performed by these professional services. For this, it was pointed out the following objectives: To describe the profile and the activities conducted by mental health teams in the RN CAPS ; Know the opinion of professionals in the mental health teams of the poli ti c , practices and training in mental health; Check the suitability of the roles and functions of professionals working in the RN CAPS in relation to care for families . This is an analytic al cross - sectional study of quantitative and qualitative approach . Data were c ollected through a questionnaire in 33 CAPS RN, between March and October 2014 , after being approved by the Research Ethics Committee / UFRN , opinion nº217.808 , CAAE : 10650612.8. 1001.5537 , on March 1 2013. T he sample was adopted , defined by inclusion and exclusion criteria , and is composed of 183 professionals. The database preparation followed two steps: 1. Preparation and processing of data of closed questions of the questionnai re concerning the characterization and practices in mental health research subjects through informational resource Statistical Package for Social Scienses (SPSS) Statistics version 20.0 ; 2. To check the significance level was chosen by applying the chi - squ are test. Preparation and treatment of the corpus formed by the answers to open questions relating to the policies, practices and training in psychiatry through Analyse lexicale pair Contexte software d' un Ensemble of Segments of Texte ( ALCESTE) together a nd categorized by content analysis technique , Bardin (2004) . The data analysis is supported in the literature . It m ade explicit the results through three articles waxing the following results. In the first, participants profile was characterized by a predo minance of females (76.5 %), aged 40 - 58 years ( 61.7 %). They work between 30 and 40 hours per week (63.5 %), working in mental health for over 10 years ( 98.4%). The sample directs the care of family groups ( 65.7%), predominantly the care team of social worke rs, nurses, psychologists and occupational therapists . The doctor performs emergency care without interaction with the staff (48.6%) . On the difficulties encountered in services are ranked in : materials and supplies ( 75.1%), financial ( 78.5%) and structura l ( 66.9%). The second article contains qualitative data organized into five categories : Promoting the rehabilitation of users of CAPS ; Needs training ; Conflicts and satisfactions of teamwork ; Practices developed in CAPS ; Effective difficulties of Mental He alth Policy . The third article highlights the inadequacy of care for families ( 93.4%) and comparing the care families and groups in CAPS both types show to be inadequate : family ( 92.63%), groups ( 92, 60%). The main data obtained reveal the urgent need for transformation in psychosocial care . It shows also the importance of investments in inputs, physical structure and training of human resources for the CAPS.