Flexibilização e novas estratégias de intensificação do trabalho nas usinas de açúcar e álcool a partir dos anos 90: estudo de caso na região de Ribeirão Preto, São Paulo, Brasil

Pós-graduação em Ciências Sociais - FCLAR

A reforma do Estado nos anos 90 e suas implicações para as políticas públicas educacionais na região amazônica

O artigo discute como está sendo desencadeado o processo de reforma do Estado no Brasil, detendo-se nas implicações que esse reordenamento tem trazido para as políticas públicas educacionais que começaram a ser implementadas na região amazônica pelo gestor público paraense a partir dos anos 90. Orientado pela hipótese de que as políticas educacionais colocadas em prática na região amazônica pelo governo do Estado do Pará fundamentam-se nos princípios da administração pública gerencial, o estudo considera a relação dessa escolha com o processo mais amplo das mudanças ocorridas no modelo produtivo capitalista na atualidade.

Estudo da toxicidade oral de 90 dias(doses repetidas)do lodo de estação de tratamento de esgoto(LETE) em ratos wistar

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Field and petrographic data of 1.90 to 1.88 Ga I- and A-type granitoids from the central region of the Amazonian Craton, NE Amazonas State, Brazil

O SW do município de Presidente Figueiredo, localizado no Estado do Amazonas, Nordeste do Cráton Amazônico Central, Brasil, hospeda granitoides do tipo I de idade entre 1890 a 1898 Ma (Terra Preta Granito, Suíte Água Branca), hornblenda-sienogranitos do tipo A (Sienogranito Canoas da Suíte Mapuera), rochas vulcânicas ácidas à intermediárias (Grupo Iricoumé) e granitos rapakivi de idades entre 1883 a 1889 Ma (Granito São Gabriel da Suíte Mapuera), e rochas afins (quartzo-gabro-anortosito e diorito), além de quartzo-monzonito Castanhal, milonitos e hornfels. A fácies quartzo-diorito do granito Terra Preta foi formada por processos de mistura entre um dique quartzo-gabro sinplutônico e um granodiorito hornblenda. Glóbulos parcialmente assimilados de sienogranitos hornblenda Canoas e seus contatos com o granodiorito hornblenda Terra Preta sugerem que o sienogranito Canoas é um pouco mais jovem do que o Granito Terra Preta. Xenólitos do sienogranito Canoas no interior do Granito São Gabriel mostram que o granito é mais jovem do que o sienogranito Canoas. Novas evidências geológicas e petrográficas avançam na compreensão petrológica destas rochas e sugerem que, além de cristalização fracionada, assimilação e mistura de magma, desempenharam um papel importante, pelo menos em escala local, na evolução e variação composicionais dos plutons. Tal evidência é encontrada no Granito Terra Preta misturado com materiais quartzo-diorito, félsico associado ao sienogranito Canoas e nos enclaves microgranulares intermediários, que apresentam biotita e hornblenda primárias, além de dissolução plagioclásio, corrosão de feldspatos, mantos feldspatos alcalinos, segunda geração de apatita, e elevados teores xenocristais em enclaves intermediários formados a partir da fragmentação de intrusões máficas. Análises petrográficas mostram que um evento deformacional registrado na parte Ocidental da área de estudo (com deformação progressiva de E para W) é estimado entre o magmatismo pós-colisional de 1,90 Ga e as invasões do Granito São Gabriel e rochas afins máficas/intermediárias (intraplaca). No entanto, torna-se extremamente necessário obter idades absolutas para este evento metamórfico.

A judicialização da política no Supremo Tribunal Federal: análise de julgamentos relacionados à reforma do Estado nos anos 90

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O governo Lula e a agenda dos anos 90: ambigüidade na política administrativa

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Effect of Abutment Screw Surface Treatment on Reliability of Implant-Supported Crowns

Purpose: To evaluate and compare the reliability of implant-supported single crowns cemented onto abutments retained with coated (C) or noncoated (NC) screws and onto platform-switched abutments with coated screws. Materials and Methods: Fifty-four implants (DT Implant 4-mm Standard Platform, Intra-Lock International) were divided into three groups (n = 18 each) as follows: matching-platform abutments secured with noncoated abutment screws (MNC); matching-platform abutments tightened with coated abutment screws (MC); and switched-platform abutments secured with coated abutment screws (SC). Screws were characterized by scanning electron microscopy and x-ray photoelectron spectroscopy (XPS). The specimens were subjected to step-stress accelerated life testing. Use-level probability Weibull curves and reliability for 100,000 cycles at 200 N and 300 N (90% two-sided confidence intervals) were calculated. Polarized light and scanning electron microscopes were used for fractographic analysis. Results: Scanning electron microscopy revealed differences in surface texture; noncoated screws presented the typical machining grooves texture, whereas coated screws presented a plastically deformed surface layer. XPS revealed the same base components for both screws, with the exception of higher degrees of silicon in the SiO2 form for the coated samples. For 100,000 cycles at 300 N, reliability values were 0.06 (0.01 to 0.16), 0.25 (0.09 to 0.45), and 0.25 (0.08 to 0.45), for MNC, MC, and SC, respectively. The most common failure mechanism for MNC was fracture of the abutment screw, followed by bending, or its fracture, along with fracture of the abutment or implant. Coated abutment screws most commonly fractured along with the abutment, irrespective of abutment type. Conclusion: Reliability was higher for both groups with the coated screw than with the uncoated screw. Failure modes differed between coated and uncoated groups.

Passion fruit seed meal at growing and finishing pig (30-90 kg) feeding

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

Indústria automobilística brasileira entre os anos 90 e os 2000: uma análise acerca da estratégia de plataformas

Este trabalho faz um estudo comparativo sobre a estratégia de plataformas na indústria automobilística brasileira entre os anos 90 e 2000. Para tanto, definiu-se o conceito de plataformas na indústria automobilística, a intensificação dos estudos sobre sua eficiência ao longo do tempo e o impacto da reutilização e adaptação de plataformas na redução de custos. Os resultados do estudo colaboraram no entendimento dos projetos de desenvolvimento de produto na indústria automotiva nacional, colaborando para a comparação entre a evolução do cenário brasileiro com a de outros cenários como Reino Unido e os BRICs

Effect of oxidizing and reducing atmospheres on Ba(Ti0.90 Zr0.10)O3:2V ceramics as characterized by piezoresponse force microscopy

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Beta therapy with 90 strontium as single modality therapy for canine squamous cell carcinoma in third eyelid

The purpose was to evaluate the effectiveness of beta-radiation with strontium-90 as single modality treatment of canine third eyelid squamous cell carcinoma (SCC). Nine dogs diagnosed with third eyelid SCC were treated with strontium-90. Radiation therapy was administered in four fractions of 100cGy per site every four days and at a depth of 0.2cm (Strontium-90 build' up) in each fraction. Radiation with beta therapy was well tolerated in all animals with no occurrence of radiation induced cataracts. In all cases, there were increased signs of conjunctival inflammation around the mass, which subsided with topical anti-inflammatory. Two dogs required surgical treatment for local tumor recurrence at 150 days and 352 days. In the remaining seven cases, disease free interval ranged from 1239 days to 2555 days. Beta therapy using 90Sr may be a valid alternative for the treatment of third eyelid SCC in dogs

Description of 90 inbred lines of castor plant (Ricinus communis L.)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Parâmetros construtivos de kirigami tridimensional de 90 graus de abertura

Origami folds and kirigami cuts merged in an oriental technique called Origamic Architecture (or 3D kirigami) that has intrinsic relationships with geometry as well as these paper arts. Despite its potential, it is not very used as a didactic resource because of the lack of parameters in its construction. There are many studies about programs development and computational language to help the design of pop-up structures, as origamic architecture is also known. However, there are few studies concerning the study of positioning the lines and creases, which is essential in the process of creating a 3D kirigami design, especially in the development of spatial perception of the figure. Limited to the 90o open type models, this article is about the establishment of some initial guidelines for design of an origamic architecture through visual elements as point, line and shape. It is presented some basic models to illustrate the constructive parameters detected as well as some models elaborated by the author, showing the viability of the guidelines established.

Alguns procedimentos na poética de João Cabral e sua relação com a poesia contemporânea (década de 80 e 90)

Pós-graduação em Letras - IBILCE

Experimental Adhesives with Different Hydrophilicity: Microshear Test in after 1, 7, and 90 Days' Storage

Purpose: To assess the microshear bond strength of 3 experimental adhesives with different degrees of hydrophilicity after 1, 7 and 90 days of storage. Materials and Methods: The bonding effectiveness of three experimental two-step etch-and-rinse adhesives (bis-GMA, bis-EMA/bis-GMA, polybutadiene [C6H12]) and one commercial adhesive (Single Bond) to sound hydrated dentin was determined using the nnicroshear test with delimitation of the adhesive area after 1, 7, and 90 days of storage in water at 37 degrees C. Two-way ANOVA was performed at the 0.05 probability level. The fractures were classified as adhesive, cohesive in dentin, cohesive in resin, and mixed. Results: The experimental adhesives showed values in the range of 11.31 to 12.96 MPa, with polybutadiene (PBH) showing the lowest bond strengths, bis-GMA the highest, and bis-EMA/bis-GMA intermediary values. Single Bond yielded bond strengths of approximately 24 MPa. Water storage decreased the bond strength in all adhesives. Adhesive fractures were predominant in experimental adhesives, while mixed fractures were the most frequent type in the Single Bond group. Conclusion: The experimental dentin adhesives of this study were able to form resin tags, but they could not penetrate into the collagen fibers and form hybrid layers. The resulting low bond strength decreased with increasing length of storage.