Um ser de lá do sertão e a construção da(s) suas(s) identidade(s) no discurso cancionista nordestino

This work was formulated in order to study the use of words in a specific sphere of human communication - the world of music. From a selection of compositions by Luiz Gonzaga (1912 -1989) and partners, the research goes in search of the identity(ies) of the migrant from Brazilian Northeast's "sertão". The work uses a discursive analysis based on a theoretical framework strongly supported by Mikhail Bakhtin's reflections and whose thread is the theme of migration discussed by Zygmunt Bauman. Thus, this qualitative and interpretivist research focuses on a particular type of text, originating from a specific sphere of human communication that is roughly known as "lyrics" ("words of songs")

Patogenicidade cruzada de Ceratobasidium spp. do caquizeiro (Diospyros kaki) e do chá(Camellia sinensis) e reação de cultivares de caqui ao patógeno

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

Histometric Analysis of Bone Repair in Bone-Implant Interface Using a Polylactic/Polyglycolic Acid Copolymer Associated With Implants in Rabbit Tibia

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

The effect of implant design on insertion torque and immediate micromotion

Objectives: To evaluate the effect of insertion torque on micromotion to a lateral force in three different implant designs. Material and methods: Thirty-six implants with identical thread design, but different cutting groove design were divided in three groups: (1) non-fluted (no cutting groove, solid screw-form); (2) fluted (901 cut at the apex, tap design); and (3) Blossomt (Patent pending) (non-fluted with engineered trimmed thread design). The implants were screwed into polyurethane foam blocks and the insertion torque was recorded after each turn of 901 by a digital torque gauge. Controlled lateral loads of 10N followed by increments of 5 up to 100N were sequentially applied by a digital force gauge on a titanium abutment. Statistical comparison was performed with two-way mixed model ANOVA that evaluated implant design group, linear effects of turns and displacement loads, and their interaction. Results: While insertion torque increased as a function of number of turns for each design, the slope and final values increased (Po0.001) progressively from the Blossomt to the fluted to the non-fluted design (M +/- standard deviation [SD] = 64.1 +/- 26.8, 139.4 +/- 17.2, and 205.23 +/- 24.3 Ncm, respectively). While a linear relationship between horizontal displacement and lateral force was observed for each design, the slope and maximal displacement increased (Po0.001) progressively from the Blossomt to the fluted to the non-fluted design (M +/- SD 530 +/- 57.7, 585.9 +/- 82.4, and 782.33 +/- 269.4 mm, respectively). There was negligible to moderate levels of association between insertion torque and lateral displacement in the Blossomt, fluted and non-fluted design groups, respectively. Conclusion: Insertion torque was reduced in implant macrodesigns that incorporated cutting edges, and lesser insertion torque was generally associated with decreased micromovement. However, insertion torque and micromotion were unrelated within implant designs, particularly for those designs showing the least insertion torque.

Effect of Platelet-Rich Plasma on Peri-Implant Bone Repair: A Histologic Study in Dogs

The present study evaluated the effect of platelet-rich plasma (PRP) on pen-implant bone healing. A total of 9 mongrel dogs received 36 dental implants with sandblasted acid-etched surface in lower jaws in a split-mouth design: in the PRP group (n = 18 implants) the implants were placed in association with PRP, and in the control group (n = 18 implants) the implants were placed without PRP. Biopsies were obtained and prepared for histologic and histometric analysis after 15, 30, and 55 days of healing. The biopsies retrieved at 15 days showed delicate bone trabeculae formed by immature bone with presence of numerous osteoblasts for both groups. At 30 days the trabeculae presented reversal lines and evident lamellar disposition, where some thread spaces were filled by bone and dense connective tissue. At 55 days, bone healing was not altered in the control group, and histologic aspects were variable for the group treated with PRP. There was no significant difference between the groups for bone-to-implant contact (P > .05). PRP did not enhance bone formation around sandblasted acid-etched implants.

Physicochemical properties of endodontic sealers of different bases

Objective: To assess the setting time (ST), flow (FL), radiopacity (RD), solubility (SB) and dimensional change following setting (DC) of different sealers (AH Plus (R), Polifil, Apexit Plus (R), Sealapex (R), Endomethasone (R) and Endofill (R)) according to American National Standards Institute/American Dental Association (ANSI/ADA) Specification 57. Material and methods: Five samples of each material were used for each test. For ST, cast rings were filled with sealers and tested with a Gillmore needle. For FL, the sealer was placed on a glass plate. After 180 s, another plate with 20 g and a load of 100 g were applied on the material, and the diameters of the discs formed were measured. In RD, circular molds were filled with the sealers, radiographed and analyzed using Digora software. For SB, circular molds were filled with the sealers, a nylon thread was placed inside the material and another glass plate was positioned on the set, pressed and stored at 37 degrees C. Samples were weighed, placed in water, dried and reweighed. The water used for SB was analyzed by atomic absorption spectrometry. For DC, circular molds were filled with the sealers, covered by glass plates and stored at 37 degrees C. Samples were measured and stored in water for 30 days. After this period, they were dryed and measured again. Results: Regarding ST, AH Plus (R), Apexit (R) and Endofil (R) sealers are in accordance with ANSI/ADA standards. Endomethasone's manufacturer did not mention the ST; Polifil is an experimental sealer and Sealapex (R) did not set. Considering RD, SB and DC, all sealers were in accordance with ANSI/ADA. The spectrometric analysis showed that a significant amount of K+ and Zn2(+) ions was released from Apexit Plus (R) and Endofill (R), respectively. Conclusion: Except for DC, all other physicochemical properties of the tested sealers conformed to ANSI/ADA requirements.

Defense reactions of Dermatobia hominis (Diptera : Cuterebridae) larval hemocytes

The defense reactions against biological (Histoplasma capsulatum and Escherichia coli) and non-biological materials (China ink and nylon thread) were tested in vivo in third instar larvae of Dermatobia hominis. The cellular defense performed by larval hemocytes was observed under electron microscopy. China ink particles were phagocytosed by granular cells 5 h after injection. E. coli cells were internalized by granular cells as early as 5 min after injection and totally cleared 180 min post-injection, when many hemocytes appeared disintegrated and others in process of recovering. H. capsulatum yeasts provoked, 24 h after being injected, the beginning of nodule formation. Nylon thread was encapsulated 24 h after the introduction into the hemocoel. Our results suggest that granular cells were the phagocytic cells and also the responsible for the triggering of nodule and capsule formation. In the presence of yeasts cells and nylon thread, they released their granules that chemotactically attracted the plasmatocytes that on their turn, flattened to surround and isolate the foreign material.

Microhabitat selection and daily movements of two rodents (Necromys lasiurus and Oryzomys scotti) in Brazilian Cerrado, as revealed by a spool-and-line device

Studies on patterns of habitat use by mammals are necessary for understanding the mechanisms involved in their distribution and abundance. In this study, we used the spool-and-line method to investigate habitat utilization by two sigmodontine rodents from Brazilian Cerrado, Necromys lasiurus and Oryzomys scotti. We conducted the study in a Cerrado area in central Brazil (15 degrees 56'S and e 47 degrees 56'W) where the animals were caught in an area of 7.68 ha of Cerrado sensu stricto. Captured individuals were marked, equipped with a spool-and-Line device, and released at the same capture point. The next day we followed the thread to record their daily movements and find their nests. To investigate microhabitat selection we compared habitat characteristics along traits of each studied species with general habitat characteristics of the study area. Although the mean 24-h distance was greater for N. lasiurus (mean +/- SE: 41.9 +/- 42.2 m, N=3) than for O. scotti (28.7 +/- 14.2 m, N=6) this difference was not significant (Mann-Whitney test, U=26, P>0.6). We detected significant differences among observed microhabitats variables of both species and available microhabitat characteristics as determined by discriminant analysis (Wilks's lambda F=3.001; df=14, 116; P<0.001). Both species were associated to microhabitat characteristics whose values differed markedly from the overall available habitat. Along the first canonical discriminant function of the DFA both them were associated with greater grass height than the mean height available and along the second axis N. lasiurus selected areas with higher fruit availability and more shelters than those selected by 0. scotti. For stronger inferences regarding differential patterns of habitat utilization by Cerrado rodents we suggest the simultaneous use of both spool-and-line and standard trapping methods. (c) 2005 Deutsche Geseltschaft fur Saugetierkunde. Published by Elsevier GmbH. ALL rights reserved.

BONE SPREADER TECHNIQUE: A PRELIMINARY 3-YEAR STUDY

The purpose of this study was to observe the clinical outcome of bone spreading and standardized dilation of horizontally resorbed bone during immediate implant placement using a "screw-type" configuration of expansion and threadformers. Fifty-three patients were included in this study, and 41 edentulous areas in anterior and posterior maxillas were treated. Sixty-eight implants were placed using an insertion torque of at least 40 Ncm. Abutments were delivered 4 to 6 months after implant placement. The overall failure percentage was 4.41% (3 failures). A retrieved analysis of I implant removed at 3 years after placement demonstrated bone resorption down to the level of the third thread. The bone spreader technique is different from Summers' osteotome, both in clinical use and in armamentarium. The main advantage of the crest-expanding technique is that it is a less invasive procedure; the facial wall expands after the medullary bone is compressed against the cortical wall. Within the limits of this preliminary study, the cumulative survival rate for this method of implant placement is 95.58% at 3 years. This study confirms that a bone spreader used in the maxilla shows an unusually low failure rate after 3 years.

C programs for solving the time-dependent Gross-Pitaevskii equation in a fully anisotropic trap

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

Estudo comparativo da cicatrização de enterorrafias em planos aposicional e invaginante no cólon descendente de eqüinos

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

Estudo histomorfométrico da influência do diâmetro do orifício piloto na interface entre o implante e o osso vertebral

OBJETIVO: Estudar as alterações agudas da interface entre os parafusos e o tecido ósseo vertebral, considerando o diâmetro do orifício-piloto em relação ao diâmetro interno do parafuso. MÉTODOS: O estudo foi realizado em carneiros e a segunda vértebra cervical selecionada para o estudo. Foram utilizados parafusos corticais de 3,5mm de diâmetro externo (2,4mm de diâmetro interno) e 14mm de comprimento. Foram formados quatro grupos experimentais: 1) orifício-piloto de 2,0mm e colocação do parafuso de 3,5mm; 2) orifício-piloto de 2,5mm e colocação do parafuso de 2,5mm; 3) orifício-piloto de 2mm sem colocação do parafuso; e 4) orifício-piloto de 2,5mm sem colocação do parafuso. RESULTADOS: O grupo 1 (orifício-piloto menor do que o diâmetro interno do parafuso) apresentou maior densidade óssea no interior da rosca do implante e maior densidade óssea na área em espelho do que o grupo 2 (orifício-piloto maior que o diâmetro interno do parafuso). A superfície de contato entre o tecido ósseo e o implante foi maior no grupo 2 em relação ao grupo 1. A comparação da densidade óssea na área em espelho entre os grupos com e sem implante (1 e 3) e (2 e 4) mostrou que a densidade óssea era maior nos grupos com o implante. Não foi observada diferença estatística entre as comparações dos grupos experimentais. CONCLUSÃO: A utilização de orifício-piloto de menor diâmetro em relação ao diâmetro interno do parafuso apresentou tendência a provocar maior compactação do osso ao redor do implante.

A influência do anel na evolução ponderal após quatro anos da derivação gástrica em y-de-roux laparoscópica

RACIONAL: A utilização de anel nas derivações gástricas em Y-de-Roux ainda é motivo de polêmica entre os cirurgiões bariátricos. Não há consenso quanto às suas repercussões em relação à perda ponderal e à manutenção do peso em longo prazo. OBJETIVO: Avaliar a influência do anel sobre a evolução do peso corporal no decorrer de quatro anos após operação bariátrica. MÉTODO: Foram analisadas retrospectivamente 143 mulheres submetidas à derivação gástrica em Y-de-Roux videolaparoscópica pareadas pela utilização ou não do anel de Silastic®. O tempo de seguimento foi de até 48 meses. Os critérios de inclusão foram idade superior a 18 anos, operação bariátrica primária e frequência regular à clínica no período de interesse para a pesquisa. A técnica manteve reservatório gástrico de pequena curvatura, volume estimado em 30 ml. A alça alimentar media 150 cm e a biliar 40 cm a partir do ângulo duodenojejunal. O grupo com anel utilizou anel tubular de Silastic® com comprimento de 6,5 cm, colocado à 2 cm da anastomose gastrojejunal. O anel era fechado por cinco nós com fio de polipropileno em seu interior. Na manhã seguinte ao procedimento cirúrgico as pacientes recebiam líquidos isotônicos; no segundo dia dieta líquida salgada sem resíduos e alta hospitalar no terceiro dia. Dieta pastosa iniciava a partir do 20o dia e sólida no 30o, juntamente com uma drágea diária de polivitamínico. RESULTADOS: O emagrecimento do grupo com anel foi maior que o sem anel em todos os períodos analisados a nível de 10% e de 5% apenas no 3o ano pós-operatório. A proporção das operadas que não atingiram perda do excesso de peso de 50% foi significativamente maior no grupo sem anel que no grupo com anel (31% entre as sem anel e 8% das com anel no 4o ano). Não houve diferença entre os grupos na recuperação tardia do peso perdido na operação. CONCLUSÕES: Os resultados foram favoráveis à utilização do anel ao se analisar exclusivamente a perda de peso.

Determinação altimétrica através do sistema de posicionamento global

Este estudo tem por objetivo verificar a influência do tempo de coleta de dados com receptores GPS nas determinações altimétricas. O levantamento altimétrico é realizado através do método de posicionamento relativo estático, utilizando dois receptores GPS de uma freqüência, em diferentes tempos de ocupação (30, 15, 10 e 5 minutos) com uma taxa de gravação de dois segundos. As altitudes obtidas com receptores GPS são comparadas com as altitudes determinadas por nivelamento trigonométrico com Estação Total. Os resultados mostraram que os tempos de ocupação menores que 30 minutos (15, 10 e 5 minutos) também são adequados para a obtenção de diferenças centimétricas nas altitudes analisadas. Mesmo considerando a precisão dos métodos topográficos convencionais, este estudo demonstra a possibilidade da utilização do Sistema de Posicionamento Global (GPS) de forma precisa nos levantamentos altimétricos, desde que se efetue a modelagem da ondulação geoidal.

Propriedades mecânicas de três fios de sutura no reparo do tendão do músculo flexor profundo do dedo de cães

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