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Search Results: 1 - 10 of 236620 matches for " Paulo C.; Hermann "
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Electroestimulación del nervio tibial posterior para el tratamiento de la vejiga hiperactiva: Estudio prospectivo y controlado
Bellette,Patricia O.; Rodrigues-Palma,Paulo C.; Hermann,Viviane; Riccetto,Cássio; Bigozzi,Miguel; Olivares,Juan M.;
Actas Urológicas Espa?olas , 2009, DOI: 10.4321/S0210-48062009000100011
Abstract: the aim of this study was to evaluate the efficacy of the posterior tibial nerve stimulation in women with overactivity bladder symptoms and the impact in the quality of life using the overactivity bladder questionnaire (oabq). methods: thirty seven women from female urology outpatient clinic of the hospital das clínicas de campinas (hc/unicamp) were enrolled in this prospective, controlled and randomized clinical trial. the patients were randomly placed in one of two groups: treatment group: patients were submitted to tibial posterior nerve electrical stimulation (n=21) and sham group: patients had electrodes placed without electricity (n = 16). after informed consent the patients underwent a physiotherapeutic evaluation, that included voiding diary and the overactivity bladder questionnaire(oabq). the treatment schedule included eight sessions of electrical stimulation in the posterior tibial nerve, twice a week. results: there were significant changes in symptoms such as frequency and nocturia (p=0,003 e p=0,001). the urgency and quality of life was improved in both group after treatment. conclusion: the posterior tibial nerve electrical stimulation is an effective treatment in overactive bladder.
Dengue virus type 3 isolation from Aedes aegypti in the municipality of Nova Igua?u, State of Rio de Janeiro
Louren?o-de-Oliveira, Ricardo;Honório, Nildimar A;Castro, Márcia G;Schatzmayr, Hermann G;Miagostovich, Marize P;Alves, Jo?o CR;Silva, Wellington C;Leite, Paulo J;Nogueira, Rita MR;
Memórias do Instituto Oswaldo Cruz , 2002, DOI: 10.1590/S0074-02762002000600009
Abstract: in a prospective field study conducted from july 2000 to june 2001, adult aedes aegypti and ae. albopictus mosquitoes were caught from the municipality of nova igua?u, state of rio de janeiro, brazil. virus isolation in ae. albopictus clone c6/36 cell line and a semi-nested reverse transcription-polymerase chain reaction detected only dengue virus type 3 in three pools of ae. aegypti, despite the co-circulation of den-1, den-2 and den-3 serotypes in that area. no viruses were detected in ae. albopictus mosquitoes. this virological surveillance consists in a sentinel system alerting for dengue outbreaks.
Animal infections by vaccinia-like viruses in the state of Rio de Janeiro: an expanding disease
Schatzmayr, Hermann G.;Simonetti, Bruno R.;Abreu, Danielle C.;Simonetti, José P.;Simonetti, Sandra R.;Costa, Renata V.C.;Gon?alves, Márcia Cristina R.;D'Andréa, Paulo Sérgio;Gerhardt, Marconny;Silva, Manuel E. Vieira;Farias-Filho, José C.;Barth, Ortrud M.;
Pesquisa Veterinária Brasileira , 2009, DOI: 10.1590/S0100-736X2009000700004
Abstract: in the present study we investigated the presence of infections by vaccinia-like viruses in dairy cattle from 12 counties in the state of rio de janeiro in the last 9 years. clinical specimens were collected from adult animals with vesicular/pustular lesions mainly in the udder and teats, and from calves with lesions around the nose and mouth. a plaque reduction neutralization test (prnt) was applied to search for antibodies to orthopoxvirus; the vesicular/pustular fluids and scabs were examined by pcr, electron microscopy (em) and by inoculation in vero cells for virus isolation. antibodies to orthopoxvirus were detected in most cases. the pcr test indicated a high nucleotide homology among the isolates and the vaccinia viruses (vacv) used as controls. by em, typical orthopoxvirus particles were observed in some specimens. the agents isolated in tissue culture were confirmed as vaccinia-like viruses by em and pcr. the ha gene of the vaccinia-like cantagalo/ioc virus isolated in our laboratory was sequenced and compared with other vaccinia-like isolates, showing high homology with the original cantagalo strain, both strains isolated in 1999 from dairy cattle. antibodies to orthopoxvirus were detected in one wild rodent (genus akodon sp.) collected in the northwestern region of the state, indicating the circulation of poxvirus in this area. nonetheless, pcr applied to tissue samples collected from the wild rodents were negative. vesicular/pustular lesions in people in close contact with animals have been also recorded. thus, the vaccinia-like virus infections in cattle and humans in the state seem to be an expanding condition, resulting in economic losses to dairy herds and leading to transient incapacitating human disease. therefore, a possible immunization of the dairy cattle in the state should be carefully evaluated.
Design of a LNA in the frequency band 1.8-2.2GHz in 0.13μm CMOS Technology
E. Di Gioia,C. Hermann,H. Klar
Advances in Radio Science : Kleinheubacher Berichte , 2005,
Abstract: The subject of this work is a low noise amplifier (LNA), operating in the frequency range 1.8-2.1GHz. The CMOS 0.13μm technology is used in respect to the low cost of the final device. Among the specifications, a variable gain and an adjustable working frequency are required. In particular, four different working modes are provided: 1.8, 1.9 and 2.1GHz high gain and 2.1GHz low gain. The amplifier is designed to be used as first stage of a receiver for mobile telephony. For this reason low power consumption is taken into consideration (low supply voltage and low drain currents). A simple digital circuit, integrated on-chip, is used to select the operating mode of the LNA by means of two input pins. A Noise figure of 1dB is obtained with a supply voltage of 0.8V.
Force, charge, and conductance of an ideal metallic nanowire
F. Kassubek,C. A. Stafford,Hermann Grabert
Physics , 1998, DOI: 10.1103/PhysRevB.59.7560
Abstract: The conducting and mechanical properties of a metallic nanowire formed at the junction between two macroscopic metallic electrodes are investigated. Both two- and three-dimensional wires with a W(ide)-N(arrow)-W(ide) geometry are modelled in the free-electron approximation with hard-wall boundary conditions. Tunneling and quantum-size effects are treated exactly using the scattering matrix formalism. Oscillations of order E_F/lambda_F in the tensile force are found when the wire is stretched to the breaking point, which are synchronized with quantized jumps in the conductance. The force and conductance are shown to be essentially independent of the width of the wide sections (electrodes). The exact results are compared with an adiabatic approximation; the later is found to overestimate the effects of tunneling, but still gives qualitatively reasonable results for nanowires of length L>>lambda_F, even for this abrupt geometry. In addition to the force and conductance, the net charge of the nanowire is calculated and the effects of screening are included within linear response theory. Mesoscopic charge fluctuations of order e are predicted which are strongly correlated with the mesoscopic force fluctuations. The local density of states at the Fermi energy exhibits nontrivial behavior which is correlated with fine structure in the force and conductance, showing the importance of treating the whole wire as a mesoscopic system rather than treating only the narrow part.
N-Rotating Loop-Soliton Solution of the Coupled Integrable Dispersionless Equation  [PDF]
Souleymanou Abbagari, Saliou Youssoufa, Hermann T. Tchokouansi, Victor K. Kuetche, Thomas B. Bouetou, Timoleon C. Kofane
Journal of Applied Mathematics and Physics (JAMP) , 2017, DOI: 10.4236/jamp.2017.56113
Abstract: In this paper, we investigate the Rotating N Loop-Soliton solution of the coupled integrable dispersionless equation (CIDE) that describes a current-fed string within an external magnetic field in 2D-space. Through a set of independent variable transformation, we derive the bilinear form of the CIDE Equation. Based on the Hirota’s method, Perturbation technique and Symbolic computation, we present the analytic N-rotating loop soliton solution and proceed to some illustrations by presenting the cases of three- and four-soliton solutions.
Eccentric Binary Millisecond Pulsars
Paulo C. C. Freire
Physics , 2009,
Abstract: In this paper we review the recent discovery of several millisecond pulsars (MSPs) in eccentric binary systems. Timing these MSPs we were able to estimate (and in one case precisely measure) their masses. These results suggest that, as a class, MSPs have a much wider range of masses (1.3 to > 2 solar masses) than the normal and mildly recycled pulsars found in double neutron star (DNS) systems (1.25 < Mp < 1.44 solar masses). This is very likely to be due to the prolonged accretion episode that is thought to be required to form a MSP. The likely existence of massive MSPs makes them a powerful probe for understanding the behavior of matter at densities larger than that of the atomic nucleus; in particular, the precise measurement of the mass of PSR J1903+0327 ($1.67 +/- 0.01 solar masses) excludes several "soft" equations of state for dense matter.
The Pulsar Population in Globular Clusters and in the Galaxy
Paulo C. C. Freire
Physics , 2012, DOI: 10.1017/S1743921312023770
Abstract: In this paper, I review some of the basic properties of the pulsar population in globular clusters (GCs) and compare it with the the Galactic disk population. The neutron stars (NSs) in GCs were likely formed - and appear to continue forming - in highly symmetric supernovae (SNe), likely from accretion-induced collapse (AIC). I review the many pulsar finds and discuss some particularly well populated GCs and why they are so. I then discuss some particularly interesting objects, like millisecond pulsars (MSPs) with eccentric orbits, which were heavily perturbed by passing stars. Some of these systems, like NGC 1851A and NGC 6544B, are almost certainly the result of exchange interactions, i.e., they are witnesses to the very same processes that created the large population of MSPs in the first place. I also review briefly the problem posed by the presence of young pulsars in GCs (with a special emphasis on a sub-class of young pulsars, the super-energetic MSPs), which suggest continuing formation of NSs in low-velocity SNe. In the final section, I discuss the possibility of an analogous population in the Galaxy and highlight a particularly interesting case, PSR J1903+0327, where the primary neutron star appears to have formed with a small-velocity kick and small fractional mass loss. Systems with primary NSs formed in electron-capture SNe should constitute a distinct low-velocity Galactic population akin in many respects to the GC population. Current high-resolution surveys of the Galactic plane should be able to detect it clearly.
Determina??o de zinco da sola do casco de bovinos leiteiros com ou sem les?es podais, suplementados ou n?o com levedura seca de cana-de-a?úcar
Pardo, Paulo Eduardo;Bremer Neto, Hermann;Chiacchio, Simone Biagio;Nagoshi, Massayoshi;Padilha, Pedro Magalh?es;
Ciência Rural , 2004, DOI: 10.1590/S0103-84782004000500027
Abstract: with the goal of studying the hoof sole zinc concentrations of cow with and without foot lesions, suplemented or not with dried yeast from sugarcane; 60 cows were chosen from milking of 150 animals. four groups of 15 animals were formed being the first one of animals with foot lesions and with supplemental yeast, the second one of animals with lesions and without supplemental yeast, the third group of animals without foot lesions and with supplemental yeast and the fourth one of animals without foot lesions and without supplemental yeast. hoof sole zinc was determined by the atomic absortion spectrophotometry (aas). the results were statistically evaluated by analysis of variable, followed by tukey?s test to compare mean levels. the mean concentration of zinc in the hoof sole of the groups statistically, significant showed differences only in the animals with foot lesions and with yeast supplementation.
Efeito do intervalo de desseca??o antecedendo a semeadura do milho e do uso de diferentes espécies de plantas de cobertura
Corrêa, Juliano Corulli;Hoffmann, Hermann Paulo;Monquero, Patrícia;Casagrande, José Carlos;Puga, Aline Peregrina;
Revista Brasileira de Ciência do Solo , 2008, DOI: 10.1590/S0100-06832008000200028
Abstract: the timing of desiccation of the cover crop before crop sowing can favor the development of the plants and, consequently, increase yields. the purpose of this study was to evaluate the effects of intervals after desiccation of distinct cover crops and corn sowing on soil fertility, nutritional content and the initial development of corn. the experiment was carried out under controlled conditions in a greenhouse, and consisted of the following treatments: four desiccation periods preceding the corn crop (21, 14, 7 and 0 days), combined with three cover crop species; crotalaria juncea (indian hemp), pennisetum americanum (pearl millet) and brachiaria brizantha cv. marandu (brachiaria). the longest time interval preceding corn sowing resulted in higher contents of soil organic matter, phosphorus and potassium; the content of these two nutrients was related to the cover crop species. longer intervals between desiccation and corn planting resulted in greater absorption of n, p and k by corn plants. corn development was also favored by longer periods after cover plant desiccation. an interval of more than 14 days should be maintained to ensure greater nutrient availability for the crop.
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