Evidence for supersonic turbulence in the upper atmosphere of Jupiter.

Spectra of the hydrogen Lyman alpha (Ly-alpha) emission line profiles of the jovian dayglow, obtained by the Goddard High Resolution Spectrograph on the Hubble Space Telescope, appear complex and variable on time scales of a few minutes. Dramatic changes occur in the Ly-alpha bulge region at low latitudes, where the line profiles exhibit structures that correspond to supersonic velocities of the order of several to tens of kilometers per second. This behavior, unexpected in a planetary atmosphere, is evidence for the particularly stormy jovian upper atmosphere, not unlike a star's atmosphere.

The 2.5-12 micrometers spectrum of comet Halley from the IKS-VEGA experiment.

The infrared instrument IKS flown on board the VEGA space probes was designed for the detection of emission bands of parent molecules, and for a measurement of the size and temperature of the thermal emitting nuclear region. The instrument had three channels with cooled detectors: an "imaging channel" designed to modulate the signal of the nucleus and two spectroscopic channels operating at 2.5-5 and 6-12 micrometers, respectively, equipped with circular variable filters of resolving power approximately 50. This paper presents and discusses the results from the spectral channels. On VEGA 1, usable spectra were obtained at distances D from the comet nucleus ranging from 250,000 to 40,000 km corresponding to fields of view 4000 and 700 km in diameter, respectively. The important internal background signal caused by the instrument itself, which could not be cooled, had to be eliminated. Since no sky chopping was performed, we obtain difference spectra between the current spectrum and a reference spectrum with little or no cometary signal taken at the beginning of the observing sequence (D approximately 200,000 km). Final discrimination between cometary signal and instrumental background is achieved using their different time evolution, since the instrumental background is proportional to the slow temperature drift of the instrument, and the cometary signal due to parent molecules or dust grains is expected to vary in first order as D-1. The 2.5-5 micrometers IKS spectra definitely show strong narrow signals at 2.7 and 4.25 micrometers, attributed to the nu 3 vibrational bands of H2O and CO2, respectively, and a broader signal in the region 3.2-3.5 micrometers, which may be attributed to CH-bearing molecules. All these signals present the expected D-1 intensity variation. Weaker emission features at 3.6 and 4.7 micrometers could correspond to the nu 1 and nu 5 bands of H2CO and the (1 - 0) band of CO, respectively. Molecular production rates are derived from the observed emissions, assuming that they are due to resonance fluorescence excited by the Sun's infrared radiation. For the strong bands of H2O and CO2, the rovibrational lines are optically thick, and radiative transfer is taken into account. We derive production rates, at the moment of the VEGA 1 flyby, of approximately 10(30) sec-1 for H2O, approximately 2.7 x 10(28) sec-1 for CO2, approximately 5 x 10(28) sec-1 for CO, and 4 x 10(28) sec-1 for H2CO, if attributions to CO and H2CO are correct. The production rate of carbon atoms in CH-bearing molecules is approximately 9 x 10(29) sec-1 assuming fluorescence of molecules in the gas phase, but could be much less if the 3.2-3.5 micrometers emission is attributed to C-H stretch in polycyclic aromatic hydrocarbons or small organic grains. In addition, marginal features are present at 4.85 and 4.45 micrometers, tentatively attributed to OCS and molecules with the CN group, respectively. Broad absorption at 2.8-3.0 micrometers, as well as a narrow emission at 3.15 micrometers, which follow well the D-1 intensity variation, might be due to water ice. Emission at 2.8 micrometers is also possibly present, and might be due to OH created in vibrationally excited states after water photodissociation. The 6-12 micrometers spectrum does not show any molecular emission, nor emission in the 7.5-micrometers region. The spectrum is dominated by silicate emission showing a double structure with maxima at 9.0 and 11.2 micrometers, which suggests the presence of olivine.

Ureter cego bifido x diverticulo ureteral. / Bifida blind ureter vs. uretral diverticulum

Sao apresentados dois casos, um de ureter cego bifido e outro de diverticulo ureteral, ambos atendidos no Hospital Evangelico de Vitoria, Espirito Santo. Tratam-se de malformacoes congenita e adquirida raras, o que justifica a apresentacao do trabalho. Os autores fazem comentario sobre as patologias e revisao da literatura mundial

Analise de 4.316 pesquisas de celulas LE no Hospital dos Servidores do Estado RJ. / Analysis of 4.316 researches of LE cells at the Hospital dos Servidores do Estado (Rio de Janeiro)

Sao analizadas retrospectivamente as 4.316 pesquisas de celulas LE realizadas no Hospital dos Servidores do Estado - INAMPS - RJ.Somente 262 testes foram positivos, correspondendo a 102 doentes, na sua maioria de LES (93,13%) e em todas essas tinham-se laminas com varias celulas LE, corpusculos hematoxiclinicos e fenomeno de roseta. Em raras situacoes clinicas observou-se o teste positivo (artrite reumatoide, artrite psoriatica, sindrome de Sjogren e gota) e, nesses casos,trata-se de laminas com raras celulas LE. Trata-se de um exame de facil realizacao tecnica, pouco dispendioso e altamente especifico para o diagnostico do lupus eritematoso sistemico

Fator antinuclear: analise de 2.725 pesquisas do Hospital dos Servidores do Estado-RJ. / Antinuclear factor: analysis of 2.725 observations at the Hospital dos Servidores do Estado, Rio de Janeiro

Os autores analizam a pesquisa de fator antinuclear em 2.725 soros de pacientes do Hospital dos Servidores do Estado do Rio de Janeiro. A tecnica utilizada foi de imunofluorescencia indireta em rim de rato. Os resultados sao analisados quanto ao diagnostico, titulos e padroes de fluorescencia encontrados. Predominaram as doencas inflamatorias difusas do tecido conjuntivo, com maior prevalencia para o lupus eritematoso sistemico, artrite reumatoide e esclerose sistemica. Estas foram tambem as enfermidades que apresentaram titulos frequentemente elevados. O padrao de fluorescencia mais encontrado foi o homogeneo

Hipertensao pulmonar maligna na esclerose sistemica progressiva. / Malignant pulmonary hypertension in progressive systemic sclerosis

Sao analisados 4 casos de esclerose sistemica progressiva caracterizados pelo desenvolvimento de "hipertensao pulmonar maligna" e cor pulmonale incontrolavel, levando ao obito em curto tempo. O grupo apresenta caracteristicas clinicas bem definidas. Todos os doentes do sexo feminino tiveram inicio da doenca na 3a. decada, com envolvimento cutaneo escasso do tipo acroesclerotico e presenca de fenomeno de Raynaud severo, infarto e ulceracoes de polpas digitais. A falta de medidas terapeuticas e o carater mortal da condicao permitem-nos a denominacao de "hipertensao pulmonar maligna" nesses casos. A nosso ver, constitui, paralelamente as manifestacoes renais-hipertensivas, as mais graves complicacoes de esclerose sistemica progressiva

Sistemática clínico-endoscópica na incontinência urináia de esforço / Clinical - endoscopical systematic urinary stress incontinence

Estudados 25 pacientes com o diagnóstico inicial de I.U.E. pela sintomatologia apresentada. Os A.A. expöem, no presente trabalho, sua sistemática e critério de exploraçäo clínico-endoscópica na I.U.E, com suas vantagens relativas. Com esta sistemática, chegam ao diagnótico definitivo somente de 10 I.U.E. verdadeiras