Implantes nanotopograficamente modificados pela ação do laser Yb-YAG

Titanium has proven its suitability as an implant material in surgery over many years. Excellent biocompatibility and corrosion resistance are outstanding features. Implant surfaces always causes concern and interest in scientific communities, due to its close relationship with the time required for osseointegration. Surface modification can be performed by several methods, being laser irradiation one of them. Titanium implants with two different surfaces were inserted in rabbits: Group I (G-I: machined surface, control group), and group II (G-II: laser irradiated, test group) being processed 30 and 60 days after surgery for histological analysis. Surface characterization was performed with SEM-EDS, contact angle measurement, and mean roughness (Ra) parameters. Surface analysis in the GII group showed a nanomorphology affected by melt and quick solidification zones following laser irradiation (SEM), as well as total wettability and Ra mean values significantly higher than in the G-I group. The laser treatment resulted in a homogenized, porous surface, with increased surface area and volume. Histological analysis of bone-implant contact linear extension (BIC) showed better results in G-II at 30 days (39.26 ± 18.23 and 68.41 ± 13.68 for G-I and G-II groups, respectively). Titanium implants modified by laser irradiation showed important features that may accelerate early osseointegration.

Bioenergia: desenvolvimento, pesquisa e inovação

Com 27 trabalhos produzidos por pesquisadores do Instituto de Pesquisa em Bioenergia (Bioen), da Unesp, este livro oferece uma ampla visão sobre as áreas que compõem o segmento. Seu principal objetivo é contribuir para melhorar a compreensão dos vários aspectos da bioenergia, em especial no Brasil, que figura entre os países com maior nível de desenvolvimento tecnológico no setor. Os artigos abordam uma série abrangente de questões relacionadas à bioenergia, como a construção genética das plantas de cana-de-açúcar visando ao aumento de produtividade, a disseminação de sementes para estimular a propagação de espécies com potencial energético, etapas de produção de bioenergia, usos do combustível e seus efeitos nos diversos tipos de motores. Agrupados por assunto, os textos estão distribuídos em cinco partes: Biomassa para bioenergia; Produção de biocombustíveis; Utilização de bioenergia; Biorrefinaria, alcoolquímica e oleoquímica e Sustentabilidade dos biocombustíveis.

E. T. A. Hoffmann e Jacques Callot: a ficção da imagem

Hoffmann wrote several fairy tales, including "Princess Brambilla" (1821), which has an remarkable pictorial component: when it was published, the text went along with eight illustrations by Carl Friedrich Thiele, which were derived from original prints made by the Frenchman Jacques Callot. While Callot images portray the Italian theater of the Commedia dell'Arte, Thiele's works follow the plot of the narrative, representing the characters of Hoffmann, who disguise themselves because of the carnival that is taking place in Rome. The costumes and masks worn by the characters however do not ensure them full secrecy. Instead of a complete undercover, they lead to double meanings and double identities so that narrative levels and artistic references overlap and create an effect similar to a set of a polyphonic orchestra (which is a metaphor implied in the very subtitle, where the narrative is called a Capriccio).

Figuras da comédia em prosa

El ilustrador francés Jacques Callot (1592-1635) representó personajes de la Commedia dell’Arte en su obra Balli di Sfessania (1616-1620), compuesta por 24 figuras. Esas imágenes se caracterizan por mostrar personajes en movimiento, teniendo al fondo escenas de la realidad italiana. El romántico alemán E. T. A. Hoffmann (1776-1822) insirió en sus cuentos y romances muchos elementos que remiten a las obras tanto de otros escritores como de pintores y músicos. Callot fue visitado por por Hoffmann en varias de sus publicaciones, entre ellas el cuento “Princesa Brambilla” (1821),que posee ocho imágenes directamente elaboradas a partir del modelo de Callot en Balli di Sfessania. Esas imágenes, sin embargo, no representan meras “ilustraciones” con respecto a la historia. Mucho más que ello, las imágenes demuestran como Hoffmann interpretaba las figuras de Callot y, como ellas sintetizaron la relación del escritor con Italia ( país que siempre deseó, pero nunca logró visitarlo) y con el arte pictórica.

Macedo e o romance romântico

Joaquim Manuel de Macedo was a highly acclaimed writer among nineteenth - century readers, although posterity treated his work with many reservations. Despite the severity of his critics, Macedo’s contribution undeniably cannot be limited to his books, but extends to the very concept of the novel as a genre during Brazilian Romanticism. This novelistic concept is fueled by the observation of everyday life as well as by aesthetic ideas brought to light by European Romanticism. Differently, however, in A luneta mágica [The Magic Looking Glass] Macedo employed aspects of the fantastic to produce a daringly critical and creative novel that contrasts vividly with other Romantic works in Brazil

Implicações socioculturais do processo de ensino de português para falantes de outras línguas no contexto virtual do Teletandem

This study aims to discuss, by assuming the perspective of the Discourse Analysis, the social and cultural implications of the process of teaching Portuguese to foreigners in the virtual context of Teletandem. It also intends to evaluate the levels of Critical Language Awareness presented by the participants, in relation to the linguistic, discursive and social dimensions of the analysis. The data were collected in 2011 in interactions between students from Unesp/Assis and students from North-American universities. The research has been guided by the following questions: (a) how social and historical changes are reflected in language uses; (b) how these implications appear in the context of Teletandem; (c) how is it possible to evaluate the levels of Critical Language Awareness between the participants related to the social dimension of the discourse.

Considerações sobre sessões de Teletandem como gênero discursivo: breve estudo e exemplificação

The reflex of social and cultural changes in discursive practices can indicate that language has a fundamental role in transforming the society and attempts of defining the directions of changes must include new forms of language practices. One of these forms concerns to computer media in teaching-learning process, showing how technology and culture interact in a significant way to interfere in language uses. In this context, it has been developed in UNESP/Assis linked to the Center for Language and Teacher Development the project Teletandem Brasil: Foreign Languages for All as a new practice of language teachinglearning through technological resources. The present paper aims to present a description of the teletandem sessions as a discursive gender according to the Bakhtin’s gender theory. The data was collected during the second semester of 2010, in sessions of interaction with an American university. The considerations are directed by the following questions: (a) how are the statements of a session discursively organized; (b) what kind of relationship the partners have with their mother language when they teach it as a foreign language, in this context. The analysis allowed us to conclude that: (a) the sessions can characterize a hybrid and secondary gender in this specific area of human activity, even the partners still find difficulties in this gender domain; (b) the teletandem sessions constitute an important instrument for the critical language awareness between the partners.

O ensino de Português Língua Estrangeira no contexto virtual do Teletandem: aspectos linguístico-discursivos

The project Teletandem, linked to the Centro de Línguas e Desenvolvimento de Professores UNESP/Assis, promotes the interaction between undergraduates students in Languages and undergraduates students from foreign universities in order to promote the teaching of Portuguese for those who do not speak Portuguese and give an opportunity to Brazilian students to learn a foreign language. Therefore there is a different context that can result in new forms of statements produced in this specific area of human activity. The present paper aims to present a description of Teletandem sessions as a discursive gender according to the gender theory, showing the multiplicity of discursive genders that emerge during an interaction. We also intend to verify the levels of Critical Language Awareness among Brazilian participants according to the Critical Discourse Analysis.

O ensino de português para hispanofalantes no contexto virtual do Teletandem

Propusemos, neste trabalho, um estudo a respeito do ensino de português para falantes de espanhol no contexto virtual do Teletandem, um projeto que tem como objetivo promover a interação entre estudantes brasileiros, alunos da FCL / Assis - UNESP, no caso, e estudantes de universidades estrangeiras a fim de compartilharem os conhecimentos das línguas que dominam. Para tanto, enfocaremos os aspectos de ordem linguística e discursiva que emergem em sessões de interação em Teletandem entre alunos da universidade brasileira ensinando o português a alunos falantes de espanhol de uma universidade mexicana, tomando como referencial teórico a Análise do Discurso Crítica. Os dados foram coletados durante o ano de 2012. A análise mostrou que alunos com um nível mais avançado de proficiência têm um maior aproveitamento das interações, porque conseguem aprofundar mais os temas e que variáveis como: nível de proficiência, motivação, formação escolar anterior, conhecimento de mundo, domínio de ferramentas tecnológicas e controle da ansiedade diante do novo também influenciam. Devido à proximidade das línguas, esse contexto virtual de aprendizagem requer a presença de um mediador que sinaliza aos aprendizes questões que devem ser consideradas.

Considerações gerais sobre prótese fixa adesiva

The success rate of resin-bonded fixed partial dentures is directly related to the adhesive system and the tooth preparation design for good retention. These resin-bonded bridges represent a prosthodontic alternative, based on their costeffectiveness, conservative techniques, and ease of laboratory manufacturing. Through a thorough review of the literature, this study aimed to report on cavity designs, types of materials used, and the advantages and disadvantages of the resin-bonded fixed partial denture. One of significant advantages of the resin-bonded fixed partial dentures is the conservation of the tooth structure, whereas its main disadvantage includes aesthetic limitations, given that the alloy may in fact be visible. Preparation design, cement type, and casting alloy type, as well as surface treatment, are among the factors that influence the longevity of resin-bonded fixed partial dentures. Treatments with resin-bonded fixed partial dentures present a bright outlook regarding the conservation of tooth structures, as well as a high level of success.

Desordens temporomandibulares em usuários de prótese parcial removível: prevalência de acordo com a classificação de Kennedy

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Antitumor activity of irradiated riboflavin on human renal carcinoma cell line 786-O

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

Effect of the addition of antimicrobial agents on shore a hardness and roughness of soft lining materials

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

Two-spotted spider mite and its natural enemies on strawberry grown as protected and unprotected crops in Norway and Brazil

Cultivation of strawberry in plastic tunnels has increased considerably in Norway and in southeastern Brazil, mainly in an attempt to protect the crop from unsuitable climatic factors and some diseases as well as to allow growers to expand the traditional production season. It has been hypothesized that cultivation under tunnels could increase the incidence of one of its major pests in many countries where strawberry is cultivated, including Norway and Brazil, the two spotted spider mite, Tetranychus urticae. The objective of this study was to evaluate the effect of the use of tunnels on the incidence of T. urticae and on its natural enemies on strawberry in two ecologically contrasting regions, Norway (temperate) and southeastern Brazil (subtropical). In both countries, peak densities of T. urticae in tunnels and in the open fields were lower than economic thresholds reported in the literature. Factors determining that systematically seem to be the prevailing relatively low temperature in Norway and high relative humidity in both countries. The levels of occurrence in Norway and Brazil in 2010 were so low that regardless of any potential effect of the use of tunnel, no major differences were observed between the two cropping systems in relation to T. urticae densities. In 2009 in Norway and in 2011 in Brazil, increase in T. urticae population seemed to have been restrained mainly by rainfall in the open field and by predatory mites in the tunnels. Phytoseiids were the most numerous predatory mite group of natural occurrence on strawberry, and the prevalence was higher in Brazil, where the most abundant species on strawberry leaves were Neoseiulus anonymus and Phytoseiulus macropilis. In Norway, the most abundant naturally occurring phytoseiids on strawberry leaves were Typhlodromus (Anthoseius) rhenanus and Typhlodromus (Typhlodromus) pyri. Predatory mites were very rare in the litter samples collected in Norway. Infection rate of the pest by the fungus Neozygites floridana (Neozygitaceae) was low. The results of this work suggest that in Norway the use of tunnels might not affect the population densities of T. urticae on strawberry in years of lower temperatures. When temperature is not a limiting factor for the development of T. urticae in that country (apparently always the case in southern Brazil), strawberry cultivation in the tunnels may allow T. urticae to reach higher population levels than in open fields (because of the provided protection from the direct impact of rainfall), but natural enemies may prevent higher levels from being reached.