Escola para os filhos dos outros: trajetória histórica da escola industrial de Natal (1942-1968)

This paper presents a reconstruction of the historical trajectory of the Escola Industrial de Natal (Industrial School of Natal), in the period 1942 to 1968, based on the analysis of its cultural, social and pedagogical characteristics in a process in which its educational practices and the individuals who constructed them were getting involved in their actions. In this sense, the concepts of memory and school culture occupied a central place to understand the elements that characterized its administrative and pedagogical organization such as, for example, its curriculum, aims, disciplinary rules, clientele, teachers, leaders and the configuration of the institutional power. Designed to meet the demands of an industrial process that has strengthened in the country, throughout its history, the Escola Industrial de Natal was becoming a space predominantly occupied by individuals, from economically disadvantaged social groups in society, in search of a professional training that would guarantee them the exercise of a profession. The time frame from 1942 to 1968 allowed us to verify the changes caused by the Organic Law of Industrial Education of 1942, and the Law number 3.552, from 1959, in the organizational structure of this school. In this context, a characteristic that was evident was the purpose of making it flow between the students the love for the country, the respect for civic values and the belief that industrial education would be able to boost the country's development, an aspect that reached a bigger dimension from the 1950 s. Marked the disciplinary character of this institution the control over the actions of individuals, developed through its multiple educational practices in specific areas and in the predetermined time, under the constant gaze of those who participated, in some from, in driving this process. On the other hand, the vocational and human training, provided to students, allowed new opportunities for social integration, not only in the state of Rio Grande do Norte, but also in other regions of Brazil. Conversely, during his career, the Escola Industrial de Natal has remained being seen as an organized institution, with good teachers, but intended for the children of others

Modelagem situada de metodologia da oficina de desenho de renda de bilros

The bobbin lace, a secular art in the process of extinction in the Village Ponta Negra in Natal, Brazil, was one of the main means of income generation for some families in town, but over time, there was growing disaffection of the younger generation to learn and practice this art, due to the high demand of time for production and insufficient and not guaranteed financial return . This project aims to promote the recovery of control over the product in the production of bobbin lace in the village of Ponta Negra, by design and implementation of a workshop for the transfer of drawing techniques in the Production Center of Craft in Village of Ponta Negra. This design was based on the methodology of Ergonomic Work Analysis and in the concepts of anthropotechnology and technology social. The ergonomic analysis, by advocating and enforcing the social and technical building, was essential for the modeling of this workshop, as allowed the construction of a social participative device , with the participation of the community groups and the external group of researchers, in a process of social construction technique. As a result, it was observed that the transfer of technical design of bobbin lace molds came to complement the learning of art office, providing solutions to promote the sustainable development of the group of tenants, in an attempt to reduce the risk of extinction eminent, and also contributed to reactivate a network of economic activities interconnected to the craft, such as the production of cushions, lace and easels

e-Pontos: Uma solução embarcada de automação comercial aplicada a clubes de fidelidade baseado em tecnologia RFID e esmart card

In practically all vertical markets and in every region of the planet, loyalty marketers have adopted the tactic of recognition and reward to identify, maintain and increase the yield of their customers. Several strategies have been adopted by companies, and the most popular among them is the loyalty program, which displays a loyalty club to manage these rewards. But the problem with loyalty programs is that customer identification and transfer of loyalty points are made in a semiautomatic. Aiming at this, this paper presents a master's embedded business automation solution called e-Points. The goal of e-Points is munir clubs allegiances with fully automated tooling technology to identify customers directly at the point of sales, ensuring greater control over the loyalty of associate members. For this, we developed a hardware platform with embedded system and RFID technology to be used in PCs tenant, a smart card to accumulate points with every purchase and a web server, which will provide services of interest to retailers and customers membership to the club

Controle químico de Pistia stratiotes, Eichhornia crassipes e Salvinia molesta em caixas d'água

Durante o ano de 1999 foram conduzidos três experimentos em Botucatu-SP, em condições de caixas d'água, com o objetivo de estudar o efeito de alguns herbicidas sobre Pistia stratiotes, Eichhornia crassipes e Salvinia molesta. Os herbicidas e as doses utilizadas foram: diquat a 460, 960 e 1.400 g ha-1 com e sem o surfatante Agral a 0,1%; 2,4 D a 1.340; glyphosate a 3.360 g ha-1 mais 0,5% do surfatante Aterbane; e imazapyr a 250 g ha-1, além de uma testemunha sem aplicação de herbicida. Os estudos foram instalados no delineamento experimental em blocos ao acaso, com quatro repetições. As parcelas experimentais foram constituídas por caixas d'água com dimensões de 60 x 60 x 60 cm mantidas a pleno sol no campo. Utilizaram-se 18, 18 e 30 plantas/caixa de P. stratiotes, E. crassipes e S. molesta, respectivamente. Os herbicidas foram aplicados com pulverizador costal a pressão constante de CO2 a 1,75 bar, munido de barra com bicos 110.02 VS, com consumo de calda de 180 L ha-1. O herbicida diquat foi eficiente no controle de S. molesta, P. stratiotes e E. crassipes em todas as doses testadas. Para P. stratiotes, os herbicidas 2,4 D e imazapyr não proporcionaram controle, enquanto o herbicida glyphosate mostrou-se eficiente. em relação a E. crassipes, os herbicidas 2,4 D e glyphosate foram eficientes em seu controle. Os herbicidas imazapyr, 2,4 D e glyphosate não foram eficientes no controle de S. molesta.

Chitosan-pectin multiparticulate systems associated with enteric polymers for colonic drug delivery

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Development of practical HPLC methods for the separation and determination of eggplant steroidal glycoalkaloids and their aglycones

A practical set of HPLC methods was developed for the separation and determination of the eggplant steroidal glycoalkaloids, solanine, chaconine, solasonine, solamargine, and their aglycones, solasodine and solanidine. A gradient method was initially developed, but proved to be neither robust nor practical. Three separate isocratic methods using acetonitrile and ammonium dihydrogen phosphate were developed and shown to be more repeatable, less subject to fluctuations in mobile phase composition, and less time consuming. The effect of adjusting buffer pH, column temperature, and buffer type (triethylammonium phosphate vs. ammonium dihydrogen phosphate) were evaluated. It was also discovered that, by addition of 10% methanol to the acetonitrile portion of the mobile phase, more control over the separations was possible. The use of methanol as a mobile phase entrainer greatly improved separations in some cases and its effectiveness was also dependent upon column temperature. Assessments of the method recovery, limit of detection, and limit of quantitation were made using extracts from S. melongena and S. linnaeanum.

Estudo comportamental, hormonal e histopatológico de animais com perda de peso progressina (SEP) e da variável peso associada a uma nova classificação ontogenética em Callithrix jacchus

The use of non-human primates in scientific research has contributed significantly to the biomedical area and, in the case of Callithrix jacchus, has provided important evidence on physiological mechanisms that help explain its biology, making the species a valuable experimental model in different pathologies. However, raising non-human primates in captivity for long periods of time is accompanied by behavioral disorders and chronic diseases, as well as progressive weight loss in most of the animals. The Primatology Center of the Universidade Federal do Rio Grande do Norte (UFRN) has housed a colony of C. jacchus for nearly 30 years and during this period these animals have been weighed systematically to detect possible alterations in their clinical conditions. This procedure has generated a volume of data on the weight of animals at different age ranges. These data are of great importance in the study of this variable from different perspectives. Accordingly, this paper presents three studies using weight data collected over 15 years (1985-2000) as a way of verifying the health status and development of the animals. The first study produced the first article, which describes the histopathological findings of animals with probable diagnosis of permanent wasting marmoset syndrome (WMS). All the animals were carriers of trematode parasites (Platynosomum spp) and had obstruction in the hepatobiliary system; it is suggested that this agent is one of the etiological factors of the syndrome. In the second article, the analysis focused on comparing environmental profile and cortisol levels between the animals with normal weight curve evolution and those with WMS. We observed a marked decrease in locomotion, increased use of lower cage extracts and hypocortisolemia. The latter is likely associated to an adaptation of the mechanisms that make up the hypothalamus-hypophysis-adrenal axis, as observed in other mammals under conditions of chronic malnutrition. Finally, in the third study, the animals with weight alterations were excluded from the sample and, using computational tools (K-means and SOM) in a non-supervised way, we suggest found new ontogenetic development classes for C. jacchus. These were redimensioned from five to eight classes: infant I, infant II, infant III, juvenile I, juvenile II, sub-adult, young adult and elderly adult, in order to provide a more suitable classification for more detailed studies that require better control over the animal development

Degenerate and critical Bloch branes

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Alterações anatômicas do limbo foliar de plantas de Polygonum lapathifolium submetidas à aplicação de herbicidas

O presente trabalho teve por objetivo avaliar a eficiência do controle dos herbicidas 2,4-D, diquat e glyphosate e as alterações anatômicas do limbo foliar provocadas por eles em plantas de Polygonum lapathifolium. As plantas foram cultivadas em caixas-d'água sob condições de campo e, quando atingiram seu pleno desenvolvimento (antes do florescimento), pulverizadas com os herbicidas. Avaliaram-se quantitativamente as seguintes características anatômicas da nervura central e internervural das folhas: porcentagem da epiderme adaxial e abaxial, porcentagem da bainha do feixe, porcentagem do feixe vascular, porcentagem de esclerênquima e colênquima, porcentagem de parênquima paliçádico e lacunoso, bem como a espessura foliar (μm). Os tratamentos químicos foram: diquat (400 g i.a. ha-1 do produto comercial Reward), 2,4-D (1.340 g e.a. ha -1 do produto comercial DMA 806 BR) e glyphosate (4.320 g e.a. ha-1 do produto comercial Rodeo) com a adição do surfatante Silwet L-77 a 0,01% v v-1. Os principais caracteres anatômicos quantitativos da região da nervura central do limbo foliar que sofreram alterações após a aplicação dos herbicidas foram a porcentagem da epiderme adaxial, a porcentagem de feixe vascular, a porcentagem de colênquima, a porcentagem de parênquima paliçádico e lacunoso e a espessura foliar. Para a região internervural do limbo foliar, os principais caracteres anatômicos quantitativos que sofreram alterações após a aplicação dos herbicidas foram a porcentagem da epiderme adaxial, a porcentagem da bainha do feixe e a espessura foliar. Os herbicidas diquat e 2,4-D foram ineficientes no controle das plantas de P. lapathifolium; o glyphosate apresentou controle superior a 90% das plantas aos 100 dias após a aplicação. Entretanto, todos os herbicidas permitiram rebrota das plantas.

HACCP plan proposal for a typical Brazilian peanut processing company

Peanuts are likely to be infested by fungi with consequent contamination by aflatoxin in post-harvest industries. A hazard analysis critical control point (HACCP) plan is proposed for a typical Brazilian post-harvest industry from raw in-shell reception to the unpeeled peanuts transportation. Codex Alimentarius Commission guidelines were followed, with four critical control points (CCP) for aflatoxin being identified. The process steps with highest probability of aflatoxin occurrence (risk) are the in-shell reception, the dried in-shell storage, and the unpeeled kernel storage. During the storage steps there is a lack of control of air moisture and temperature. Therefore, there is no option but to keep rigid monitoring and control over each CCP, and detour lots with high aflatoxin levels to either oil or seed production. Attempts to correlate the aflatoxin levels with the rainfall showed an irregular trend of the toxin level. (c) 2008 Elsevier Ltd. All rights reserved.

Obtenção de filmes finos de TiO2 nanoestruturado pelo método dos precursores poliméricos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Biosynthesis of antimalarial lignans from Holostylis reniformis

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Age impact on the eferent system actitivies in cochlear mechanical properties in normal hearing individuals

O trato olivococlear medial realiza o controle eferente das células ciliadas externas, regulando as contrações lentas e atenuando as rápidas. Com a pesquisa da amplitude das emissões otoacústicas sem e com estimulação acústica contra, ipsi ou bilateralmente, é possível estimar as condições desse trato, uma vez que o efeito resultante de redução/supressão das emissões indica seu funcionamento. O envelhecimento implica em diminuição da atividade do sistema auditivo central, em função da degeneração das estruturas envolvidas nas habilidades auditivas. OBJETIVO: O objetivo foi investigar o efeito da idade na atividade do trato sobre a cóclea, com a análise da amplitude das emissões com estimulação acústica contralateral. MATERIAL E MÉTODO: A casuística foi composta por 75 indivíduos agrupados conforme a idade. A metodologia foi o modo convencional, com clique linear e o ruído branco. ESTUDO DE CASO: A análise considerou a resposta das orelhas e a comparação entre os grupos. RESULTADOS: Os resultados revelam diferenças estatisticamente significantes entre o response das emissões sem e com estimulação acústica contralateral, nos indivíduos (20 a 39 anos). O efeito redução/supressão das emissões diminui com a idade (quarta década). CONCLUSÃO: O envelhecimento prejudica a efetividade da atividade do trato.

Manejo químico de convolvulaceae e euphorbiaceae em cana-de-açúcar em período de estiagem

As famílias Convolvulaceae e Euphorbiaceae possuem diferentes espécies que infestam os canaviais de forma rápida e agressiva, especialmente em áreas cobertas pela palha remanescente da colheita que não foram queimadas. Essa infestação, associada às extensas áreas de cultivo, tem dificultado a operacionalidade do manejo químico exclusivamente durante a estação chuvosa do ano, levando aos produtores a necessidade de aplicar os herbicidas também no período de estiagem. Nesse contexto, o presente trabalho objetivou estudar a persistência dos herbicidas aplicados durante o período de estiagem em resistir às intempéries climáticas até o início da estação chuvosa, avaliando-se o controle sobre as espécies dos gêneros de Ipomoea, Merremia e Euphorbia. O delineamento experimental foi em blocos casualizados com 42 tratamentos, distribuídos em esquema de parcelas subdivididas com seis repetições. Os herbicidas amicarbazone (1.050 g ha-1), imazapic (1.22,5 g ha-1), sulfentrazone (600 g ha-1) e as associações clomazone (1.000 g ha-1) + hexazinone (250 g ha-1), sulfentrazone (600 g ha-1) + diurom (936 g ha-1) + hexazinone (264 g ha-1), sulfentrazone (500 g ha-1) + amicarbazone (700 g ha-1) e testemunha foram alocados nas parcelas. As espécies Ipomoea nil, I. hederifolia, I. quamoclit, I. grandifolia, Merremia aegyptia e Euphorbia heterophylla foram semeadas diretamente no solo, cobertas com o equivalente a 15 t ha-1 de palha de cana-de-açúcar e alocadas nas subparcelas. Após a aplicação dos herbicidas, registraram-se 70 dias de ausência de chuvas e o estresse hídrico impossibilitou a avaliação de controle, devido à não emergência das plantas daninhas em todos os tratamentos. Entretanto, com o início da estação chuvosa aos 90 dias após o tratamento, iniciaram-se as avaliações de eficácia devido à emergência das plantas daninhas. Aos 150 DAT (dias após os tratamentos) os herbicidas sulfentrazone e sulfentrazone associado a amicarbazone foram os mais persistentes e apresentaram média de eficácia de controle superior a 85%, considerando todas as espécies, quando comparada à da testemunha.

Efeito residual de herbicidas aplicados em pré-emergência em diferentes solos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)