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Search Results: 1 - 10 of 149132 matches for " Gilberto; Camacho B "
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OBESIDAD PREGESTACIONAL Y RIESGO DE INTOLERANCIA A LA GLUCOSA EN EL EMBARAZO Y DIABETES GESTACIONAL
Nava D,Pamela; Gardu?o A,Adriana; Pesta?a M,Silvia; Santamaría F,Mauricio; Vázquez DA,Gilberto; Camacho B,Roberto; Herrera V,Javier;
Revista chilena de obstetricia y ginecología , 2011, DOI: 10.4067/S0717-75262011000100003
Abstract: background: obesity in women in reproductive age is becoming more frequent and it self complicates preg-nancy increasing the risk of diseases such as gestational diabetes mellitus (gdm). aims: to determine the risk of gestational diabetes mellitus (gdm) and impaired glucose tolerance (igt) according to the pregestational body mass index (pgbmi). methods: sample of 489 patients, they were classified by pgbmi and underwent an oral glucose tolerance test (ogtt) with 100 g of glucose during 120 minutes. gdm was defined with two altered valúes in the ogtt and igt with a single altered value. a chi-square test was applied to determine difference between groups, and we obtained an odds ratio (or), with a confidence level of 95%. results: 9 patients were low weight, 194 normal weight, 158 overweight and 128 obese, average gestational age 31.3 ± 5.6 weeks. 13% of the patients had gdm, 10.6% had igt. overweight women had an or of 3.81 of developing igt (95% cl 1.62-8.95) and an or of 3.7 of developing gdm (95% cl 1.65-8.38), while women with prepregnancy obesity showed an or of 6.6 of developing itg (95% cl 2.83-15.66) and an or of 8.8 of developing gdm (95% cl 4.05-19.51), all compared to women with prepregnancy normal weight. conclusions: mexican population has a higher risk of gdm than other populations and also a higher prevalence of overweight and obesity, so that every pregnant woman should be screening for gdm, has a diagnosis and receive treatment, preventing complications and type 2 diabetes.
ACOPLAMIENTO DE PLASMONES LOCALIZADOS EN NANOSISTEMAS
Camacho B.,Angela S.;
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales , 2012,
Abstract: the rapid development of nanotecnology has allowed finding new optical properties of nanosystems, which give rise to investigation of light-matter interactions at nanoscale. in this work we present a systematic study of surface-localized plasmons coupling in systems of two metallic nanoparticles following shape, size and distance between them. we observed the enormous enhancement of the near field, which is strongly dependent on the plasmon creation and the charge distribution at the surface. we also find out the plasmon frequency dependence on the above parameters and discuss the different physical concepts underlying the maximum near field and maximum frequency.
Vacunas: prevención de enfermedades y protección de la salud
Camacho Luiz Antonio B.
Cadernos de Saúde Pública , 2005,
Abstract:
Foliations with Morse singularities
C. Camacho,B. Scardua
Mathematics , 2006,
Abstract: We study codimension one smooth foliations with Morse type singularities on closed ma-nifolds. We obtain a description of the manifold in case the number of centers in greater then the number of saddles. This result relies on and extends previous results of Reeb (for foliations having only centers) and Ells-Kuiper (for manifolds admitting Morse functions with three singularities).
URBINA BURGOS, Rodolfo, Gobierno y Sociedad en Chiloé Colonial
Gilberto Harris B.
Revista de estudios histórico-jurídicos , 1999,
Abstract:
RELEYENDO A KARL WITTFOGEL Y SU DESPOTISMO ORIENTAL. ESTUDIO COMPARATIVO DEL PODER TOTALITARIO
GILBERTO HARRIS BüCHER
Revista de estudios histórico-jurídicos , 1999,
Abstract:
Diagnóstico de metástases de carcinoma papilífero de tiróide através da dosagem de tiroglobulina no líquido obtido da lavagem da agulha utilizada na pun??o aspirativa
Biscolla, Rosa Paula M.;Ikejiri, Elza S.;Mamone, Maria Concei??o;Nakabashi, Cláudia C.D.;Andrade, Victor P.;Kasamatsu, Teresa S.;Crispim, Felipe;Chiamolera, Maria Izabel;Andreoni, Danielle M.;Camacho, Cleber P.;Hojaij, Flávio C.;Vieira, José Gilberto H.;Furlanetto, Reinaldo P.;Maciel, Rui M.B.;
Arquivos Brasileiros de Endocrinologia & Metabologia , 2007, DOI: 10.1590/S0004-27302007000300009
Abstract: the widespread use of neck ultrasonography (us) during the follow-up of patients with papillary thyroid carcinoma (ptc) has led to the discovery of small cervical lymph nodes (ln). although us has a high sensitivity for diagnosing ln, fine needle aspiration biopsy (fna) and measurement of thyroglobulin in fine needle aspirates (fna-tg) have proven to be invaluable tools. the aim of this study is to determine the sensitivity of the combined use of neck us, fna biopsy and fna-tg for diagnosis of cervical lymph nodes. we have studied 32 patients with 44 ln detected by us, 19 classified as inflammatory and 25 as suspicious. 15 of those 25 suspicious ln had high fna-tg (13 of the 15 had positive cytology and 2 indeterminate). all of these 15 ln (11 patients) were proven to be ptc metastasis by histopathology. all 19 inflammatory ln and those 10/25 suspicious ln, had cytology negative for malignancy and undetectable fna-tg. we conclude that fine needle aspiration biopsy and fna-tg combined with neck us are essential for detecting positive cervical lymph nodes due to its high sensitivity and specificity and it should be considered the standard for investigating locally recurrent disease in patients with ptc.
Study of dynamical dipole moment in an asymmetric double quantum well
Bohórquez, J.;Camacho B., A. S.;
Brazilian Journal of Physics , 2002, DOI: 10.1590/S0103-97332002000200030
Abstract: a study of the dynamical behavior of the charge in an asymmetric double quantum well is presented. in particular, the time behavior of intrasub-band dipole moment which is induced by intersub-band optical excitation is analyzed in two aspects: first, design of the quantum wells in order to spatially separate the charge and store it and second study the dynamic tunneling effect between the two wells. since both conduction band levels are optically populated by transitions from a single band level, they are coherently coupled. the intrasub-band density matrix completely characterizes the dynamics of the conduction band electrons. these dipole moment oscillations are entirely equivalent to the tunneling oscillations between the two wells. the time dependent dipole moment produced by these real-space charge oscillations is obtained as a source of dipole electromagnetic radiation in thz region, which has been detected experimentally. the calculations show the geometry dependence of the emitted radiation. based on the reported decoherence time for this process a coherent control mechanism of the thz radiation is introduced by varying the phase of a second laser.
Feature Extraction Using LPC-Residual and MelFrequency Cepstral Coefficients in Forensic Speaker Recognition
Jose B. Trangol Curipe,Abel Herrera Camacho
International Journal of Computer and Electrical Engineering , 2013, DOI: 10.7763/ijcee.2013.v5.658
Abstract: In this paper, we investigated the form toimprove the performance in the recognition, involved at theforensic area. To improve, we use Linear Predictive Coding(LPC) and it residual; it was compared with Mel Frequency Cepstral Coefficients (MFCC). The classification techniquewas Gaussian Mixture Model (GMM). The collection data is inSpanish language, using spontaneous speech from 37 malespeaker of Mexican Spanish, we have three recordings,between each recording exist 3 week and one month ofseparation respectively, this allows us in real condition work,we use non contemporaneous recording and scarcity of data totraining and testing the performance of the forensicrecognition task. Two conclusions can be drawn from theresults, the first, MFCC has better performance with longrecording, LPC-residual has better performance with shortrecording.
Study of dynamical dipole moment in an asymmetric double quantum well
Bohórquez J.,Camacho B. A. S.
Brazilian Journal of Physics , 2002,
Abstract: A study of the dynamical behavior of the charge in an asymmetric double quantum well is presented. In particular, the time behavior of intrasub-band dipole moment which is induced by intersub-band optical excitation is analyzed in two aspects: first, design of the quantum wells in order to spatially separate the charge and store it and second study the dynamic tunneling effect between the two wells. Since both conduction band levels are optically populated by transitions from a single band level, they are coherently coupled. The intrasub-band density matrix completely characterizes the dynamics of the conduction band electrons. These dipole moment oscillations are entirely equivalent to the tunneling oscillations between the two wells. The time dependent dipole moment produced by these real-space charge oscillations is obtained as a source of dipole electromagnetic radiation in THz region, which has been detected experimentally. The calculations show the geometry dependence of the emitted radiation. Based on the reported decoherence time for this process a coherent control mechanism of the THz radiation is introduced by varying the phase of a second laser.
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