A late diagnose of malformation of ear tube: case report and review of literature

The malformation of the ear tube is a rare condition, usually diagnosed in children with recurrent otitis or deafness. There are no reports available in the medical literature attempting to this congenital malformation in older patients. The authors report a case of an old man with unilateral secretory otitis media and malformation of ear tube.A malformação da tuba auditiva é uma patologia rara, geralmente diagnosticada na infância devido a otites de repetição ou diminuição da audição. Entretanto, não há relato recente na literatura sobre esta malformação congênita ocasionando distúrbios na orelha média em qualquer faixa etária. No presente estudo, os autores relatam 1 caso de malformação tubária em um paciente idoso que desenvolveu um quadro de otite média secretora unilateral após 1 ano do diagnóstico de AIDS.FMUSPEPMFMUSP Hospital das Clínicas Clínica de OtorrinolaringologiaUNIFESP-EPMUNIFESP, EPMSciEL

A Quantum Cosmological Model With Static and Dynamic Wormholes

Quantization is performed of a Friedmann-Robertson-Walker universe filled with a conformally invariant scalar field and a perfect fluid with equation of state $p=\alpha \rho$. A well-known discrete set of static quantum wormholes is shown to exist for radiation ($\alpha =1/3$), and a novel continuous set is found for cosmic strings ($\alpha = -1/3$), the latter states having throat radii of any size. In both cases wave-packet solutions to the Wheeler-DeWitt equation are obtained with all the properties of evolving quantum wormholes. In the case of a radiation fluid, a detailed analysis of the quantum dynamics is made in the context of the Bohm-de Broglie interpretation. It is shown that a repulsive quantum force inversely proportional to the cube of the scale factor prevents singularities in the quantum domain. For the states considered, there are no particle horizons either.Comment: LaTex file, 13 pages. To appear in General Relativity and Gravitatio

Quantum Cosmology in Scalar-Tensor Theories With Non Minimal Coupling

Quantization in the minisuperspace of non minimal scalar-tensor theories leads to a partial differential equation which is non separable. Through a conformal transformation we can recast the Wheeler-DeWitt equation in an integrable form, which corresponds to the minimal coupling case, whose general solution is known. Performing the inverse conformal transformation in the solution so found, we can construct the corresponding one in the original frame. This procedure can also be employed with the bohmian trajectories. In this way, we can study the classical limit of some solutions of this quantum model. While the classical limit of these solutions occurs for small scale factors in the Einstein's frame, it happens for small values of the scalar field non minimally coupled to gravity in the Jordan's frame, which includes large scale factors.Comment: latex, 18 page

Análise da diversidade genética de cafeeiros do Banco de Germoplasma da UFV/EPAMIG utilizando marcadores RAPD.

O conhecimento da diversidade genética do germoplasma utilizado em programas de melhoramento genético é importante para o planejamento de estratégias de trabalho. Técnicas de marcadores moleculares fornecem informações sobre distâncias genéticas entre acessos de Bancos de Germoplasma. Dessa forma, no presente trabalho, 92 acessos do Banco de Germoplasma da UFV/EPAMIG foram submetidos a uma análise de diversidade genética, utilizando-se 20 primers RAPD (Random Amplified Polymorphic DNA). As amplificações deram origem a um total de 42 bandas polimórficas. As distâncias genéticas entre os genótipos, baseadas no complemento de Jaccard, variaram de zero a 100%. No dendrograma obtido observou-se a formação de cinco grupos diferentes ao nível de 50% de distância genética, sendo um grupo formado pelos genótipos descendentes de Híbridos de Timor, outro com o genótipo Piatã, um terceiro grupo com o indivíduo da espécie C. racemosa, outro com o acesso Catindu e o último grupo com os demais genótipos

Characterization of preantral follicle clustering and neighborhood patterns in the equine ovary.

Understanding the transition from quiescent primordial follicles to activated primary follicles is vital for characterizing ovarian folliculogenesis and improving assisted reproductive techniques. To date, no study has investigated preantral follicle crowding in the ovaries of livestock or characterized these crowds according to follicular morphology and ovarian location (portions and regions) in any species. Therefore, the present study aimed to assess the crowding (clustering and neighborhood) patterns of preantral follicles in the equine ovary according to mare age, follicular morphology and developmental stage, and spatial location in the ovary. Ovaries from mares (n = 8) were collected at an abattoir and processed histologically for evaluation of follicular clustering using the Morisita Index and follicular neighborhoods in ovarian sections. Young mares were found to have a large number of preantral follicles with neighbors (n = 2,626), while old mares had a small number (n = 305). Moreover, young mares had a higher number of neighbors per follicle (2.6 ± 0.0) than old mares (1.2 ± 0.1). Follicle clustering was shown to be present in all areas of the ovary, with young mares having more clustering overall than old mares and a tendency for higher clustering in the ventral region when ages were combined. Furthermore, follicles with neighbors were more likely to be morphologically normal (76.5 ± 6.5%) than abnormal (23.5 ± 6.5%). Additionally, morphologically normal activated follicles had increased odds of having neighbors than normal resting follicles, and these normal activated follicles had more neighbors (2.6 ± 0.1) than normal resting follicles (2.3 ± 0.1 neighbors). In the present study, it was demonstrated that preantral follicles do crowd in the mare ovary and that clustering/neighborhood patterns are dynamic and differ depending on mare age, follicular morphology, and follicular developmental stage

Toxicity of neem (Azadirachta indica) seed cake to larvae of the mediterranean fruit fly, Ceratitis capitata (Diptera: Tephritidae), and its parasitoid, Diachasmimorpha longicaudata (Hymenoptera: Braconidae).

The objective of this study was to evaluate the interaction of Diachasmimorpha longicaudata (Ashmead) parasitism and the toxicity of neem seed cake (NSC) on survival of Ceratitis capitata (Wiedemann), the Mediterranean fruit fly (medfly). Groups of 1600 - 1700 third instar C. capitata larvae were each wrapped in organdy cloth (?unit of parasitism?) and exposed to approximately 500 couples of sexually mature D. longicaudata parasitoids (5-d old) for one hour. C. capitata larvae exposed or not to parasitism were transferred to plastic cups containing vermiculite with different proportions of neem seed cake (NSC): 0% NSC (control), 5% NSC, 10% NSC, 15% NSC, 20% NSC, 25% NSC, 30% NSC. Both NSC and the parasitism caused larval/pupal mortality and reduced the emergence of C. capitata flies. NSC affected parasitoid emergence negatively. The effect of parasitism coupled to NSC did not provide greater reduction in the medfly emergence than when parasitism was used alone. However, each of these 2 methods affect a different life stage of medfly, larvae and pupae, respectively, and their joint use may increase the probability of controlling medfly populations in field

Dynamical Vacuum in Quantum Cosmology

By regarding the vacuum as a perfect fluid with equation of state p=-rho, de Sitter's cosmological model is quantized. Our treatment differs from previous ones in that it endows the vacuum with dynamical degrees of freedom. Instead of being postulated from the start, the cosmological constant arises from the degrees of freedom of the vacuum regarded as a dynamical entity, and a time variable can be naturally introduced. Taking the scale factor as the sole degree of freedom of the gravitational field, stationary and wave-packet solutions to the Wheeler-DeWitt equation are found. It turns out that states of the Universe with a definite value of the cosmological constant do not exist. For the wave packets investigated, quantum effects are noticeable only for small values of the scale factor, a classical regime being attained at asymptotically large times.Comment: Latex, 19 pages, to appear in Gen. Rel. Gra

Viabilidade de uredosporos da ferrugem do cafeeiro (Hemileia vastatrix Berk. et Br.) sob diferentes métodos de preservação in vitro.

Este trabalho teve por objetivo avaliar a viabilidade e infectividade de uredosporos de H. vastatrix por diferentes métodos de preservação. Os tratamentos consistiram no armazenamento dos uredosporos sob diferentes temperaturas: 1) 4 ºC com 50% de umidade relativa; 2) 4 ºC após liofilização; 3)?80 ºC; 4)?20 ºC; 5)?80 ºC após congelamento em nitrogênio líquido. Utilizou-se no experimento uredosporos da raça II de H. vastatrix. A viabilidade dos uredosporos foi avaliada, pela contagem do número de uredosporos germinados em meio ágar-água a 2%. Para isso, foi espalhada uma suspensão de uredosporos (2 mg/ml), correspondente a cada tratamento, em placas de Petri que foram incubadas por 20-24 horas, a 22 ºC, e na ausência de luz. Simultaneamente, cada suspensão de esporos foi inoculada em folhas destacadas de Coffea arabica ?Catuaí?, mantidas por 50 dias na mesma temperatura e fotoperíodo de 12 horas de luz e escuro. Os resultados mostraram que os tratamentos 3 e 5 foram os mais eficientes na preservação, mantendo a viabilidade dos uredosporos em 38% e 42%, respectivamente, oito meses após a montagem dos testes. Inoculações em folhas destacadas mostraram que o tratamento 3 foi o mais eficiente na manutenção da infectividade pelo número de lesões esporuladas