Mostrando 1 - 9 Resultados de 9 Para Buscar 'Velásquez, J.', tiempo de consulta: 0.21s Limitar resultados
1
artículo
Presentación del manual de procedimientos para la prueba de sensibilidad antimicrobiana por el método de disco de difusión. Serie de normas técnicas N° 30
Publicado por
Sacsaquispe Contreras, Rosa Elena, Velásquez, J.
Publicado 2002 Enlace
El proceso de diagnóstico y tratamiento de un paciente es muy complejo. Desde su llegada a un establecimiento de salud hasta el alta reciben la prestación de muchos profesionales. Esto a su vez genera diferentes procesos, siendo el laboratorio uno de los más importantes.
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2
artículo
Antifungal Evaluation of Gentian Violet and Mycostatin on Yeasts
Publicado por
Gardini Tuesta, W. E., Velásquez, J. H., Velazco, Corsina, Canales, Nancy
Publicado 1965 Enlace
At present the diagnosis and treatment of yeast infections fungal pathogens is receiving more attention by researchers ( 1, 6 , 7, 9 , 10, 16 , 17) . In our area, genital infections yeast pathogens is common, due to treatment of bacterial infections with broad-spectrum antibiotics (4, 6, 16 ) . Other authors have noted this effect and hormonal conditions as triggers of thrush (2, 3, 5 , 6, 7 , 8, 11 , 12, 13, 18 , 19, 20 ) . In diagnostic laboratories tend to implement the use of Mycostatin discs to assess their sensitivity in the presence of yeast infection from each ; however, similar references are known about gentian violet in spite of its widespread use in therapy . The purpose of this paper is to provide a method of healthcare worker practical value to determine the sensitivity of yeast to gentian violet disk and make known the antifungal effect of the two substances are studied ag...
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3
artículo
Physiological affinities in some filamentous fungi Environment
Publicado por
Gardini, W. E:, Valles, C. R., Velásquez, J. H., Canales, Nancy
Publicado 1965 Enlace
Has been isolated from the environment 14 groups of pollutants filamentous fungi using the agar medium fresh tomato . They investigated faith selective reactions carbohydrates fermentation to 18 , their mutual reactions and production of deoxyribonuclease ( DNase ) . Was found to have a preference for certain ferment carbohydrates such as sucrose , galactose, mannose , maltose , raffinose, melibiose , by Aspergillus fumigatus , Aspergillus nigricana , Aspergillus ochraceus , Aspergillus oryzae , Alternaria , CunninghameIla , clades Porium herbarum , Fusarium roseum , Glenospora , Hormodendrum , bicolor Penicillium , Penicillium sp. ACI -9 strain , Rhizopus and Trichophyton sp. That varieties of fungi within the same genus have different fermentative power as with the Aspergillus fumigatus , Aspergillus nigricans , Aspergillus ochraceus and Aspergillus ONZAE on the adonitol , arabinose , ...
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4
artículo
Relación de la expresión del factor inducido por hipoxia-2 (HIF-2) y sVEGF-R1/sFlt-1: implicación en la fisiopatología de preeclampsia.
Publicado por
Valdivia-Silva, J. Ernesto, González-Altamirano, J.C., López-Molina, K., Lazo-Velásquez, J.C., García-Zepeda, E.
Publicado 2008 Enlace
En este trabajo se reportan evidencias de los efectos de la hipoxia en la fisiopatología de la preeclampsia al demostrar: primero, que el aumento del receptor soluble-1 del VEGF es selectivo en células trofoblásticas (CT) en respuesta a valores bajos de oxígeno; segundo, que ese incremento está fuertemente ligado a la elevación del factor de transcripción HIF-2 alfa en las células trofoblásticas, y tercero, que las CT, fibroblastos de las vellocidades (FV) y endoteliales de vena umbilical (HUVEC) de placentas preeclámpticas son más sensibles a la respuesta hipóxica que las de otro origen. Finalmente, la elevación del receptor soluble sVEGFR-1 en CT en respuesta a HIF-2 alfa puede explicar un estado antiangiogénico que lleva a la remodelación deficiente de la vasculatura que se encuentra en la preeclampsia.
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5
artículo
EVALUATION OF THE ABSORBED DOSE IN BRACHITHERAPY WITH 192IR SOURCES IN HETEROGENEOUS MEDIUM, USING OPTICALLY STIMULATED LUMINESCENCE DOSIMETER AND MONTE CARLO SIMULATION
Publicado por
CONCHA-VALENZUELA, L.H., GUZMÁN-CALCINA, C.S., SOLANO-SALINAS, C.J., MÉNDEZ-VELASQUEZ, J.A., AYMAR-ALEJOS, J., MASIAS-MONTESINOS, G., VILLAVERDE-HERRERA, J.B., MÁRQUEZ-PACHAS, J.F.
Publicado 2024 Enlace
EL ESTUDIO TIENE COMO OBJETIVO EVALUAR LA DOSIS ABSORBIDA (DABS) EN TRATAMIENTOS DE BRAQUITERAPIA POR ALTA TASA DE DOSIS CON UNA FUENTE DE 192IR, CONSIDERANDO LAS HETEROGENEIDADES DE LOS TEJIDOS, TIPOS DE APLICADORES Y DIMENSIONES DEL PACIENTE. PARA ESTE FIN, SE REALIZARON CÁLCULOS DE ISODOSIS POR SIMULACIÓN MONTECARLO (MC) Y UNA PRUEBA DE EXACTITUD DE LA DOSIS ENTREGADA A UN OBJETO SIMULADOR, COMPARANDO LA DABS PLANIFICADA EN EL SISTEMA DE PLANIFICACIÓN DE TRATAMIENTO (TPS) CON LA DOSIS REGISTRADA POR EL DOSÍMETRO DE LUMINISCENCIA ÓPTICAMENTE ESTIMULADA. SE OBTUVO QUE EL TPS CALCULA ADECUADAMENTE LA DISTRIBUCIÓN DE DABS, CUANDO EL MEDIO ES AGUA; SIN EMBARGO, ES NECESARIO INCLUIR LAS LIBRERÍAS QUE CONSIDERAN LAS HETEROGENEIDADES PARA REALIZAR CON MAYOR PRECISIÓN EL CÁLCULO DE LA DISTRIBUCIÓN DE DABS EN LOS PACIENTES. SE CONCLUYÓ QUE AL REALIZAR UNA SIMULACIÓN MC ES UNA BUENA ...
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6
artículo
The impact of the Hunga Tonga–Hunga Ha’apai volcanic eruption on the Peruvian atmosphere: from the sea surface to the ionosphere
Publicado por
Pacheco, Edgardo E., Velasquez, J. P., Flores, R., Condori, L., Fajardo, G., Kuyeng, Karim, Scipión, Danny, Milla, M., Conte, J. F., Poblet, F. L., Chau, J. L., Suclupe, J., Rojas, R., Manay, E.
Publicado 2024 Enlace
The eruption of the Hunga Tonga Hunga Ha’apai volcano on 15 January 2022 significantly impacted the lower and upper atmosphere globally. Using multi-instrument observations, we described disturbances from the sea surface to the ionosphere associated with atmospheric waves generated by the volcanic eruption. Perturbations were detected in atmospheric pressure, horizontal magnetic field, equatorial electrojet (EEJ), ionospheric plasma drifts, total electron content (TEC), mesospheric and lower thermospheric (MLT) neutral winds, and ionospheric virtual height measured at low magnetic latitudes in the western South American sector (mainly in Peru). The eastward Lamb wave propagation was observed at the Jicamarca Radio Observatory on the day of the eruption at 13:50 UT and on its way back from the antipodal point (westward) on the next day at 07:05 UT. Perturbations in the horizontal compon...
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7
artículo
Clinical standards for drug-susceptible TB in children and adolescents
Publicado por
Chiang, S. S., Graham, S. M., Schaaf, H. S., Marais, B. J., Sant’Anna, C. C., Sharma, S., Starke, J. R., Triasih, R., Achar, J., Amanullah, F., Armitage, L. Y., Aurilio, R. B., Buck, W. C., Centis, R., Chabala, C., Cruz, A. T., Demers, A. M., du Preez, K., Enimil, A., Furin, J., Garcia-Prats, A. J., Gonzalez, N. E., Hoddinott, G., Isaakidis, P., Jaganath, D., Kabra, S. K., Kampmann, B., Kay, A., Kitai, I., Lopez-Varela, E., Maleche-Obimbo, E., Mestanza Malaspina, F., Niederbacher Velásquez, J., Nuttall, J. J.C., Oliwa, J. N., Orozco Andrade, I., Perez-Velez, C. M., Rabie, H., Seddon, J. A., Sekadde, M. P., Shen, A., Skrahina, A., Soriano-Arandes, A., Steenhoff, A. P., Tebruegge, M., Tovar, M. A., Tsogt, B., van der Zalm, M. M., Welch, H., Migliori, G. B.
Publicado 2023 Enlace
BACKGROUND: These clinical standards aim to provide guidance for diagnosis, treatment, and management of drug-susceptible TB in children and adolescents. METHODS: Fifty-two global experts in paediatric TB participated in a Delphi consensus process. After eight rounds of revisions, 51/52 (98%) participants endorsed the final document. RESULTS: Eight standards were identified: Standard 1, Age and developmental stage are critical considerations in the assessment and management of TB; Standard 2, Children and adolescents with symptoms and signs of TB disease should undergo prompt evaluation, and diagnosis and treatment initiation should not depend on microbiological confirmation; Standard 3, Treatment initiation is particularly urgent in children and adolescents with presumptive TB meningitis and disseminated (miliary) TB; Standard 4, Children and adolescents should be treated with an approp...
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8
artículo
Clinical standards for the diagnosis and management of asthma in low- and middle-income countries
Publicado por
Jayasooriya, S., Stolbrink, M., Khoo, E. M., Sunte, I. T., Awuru, J. I., Cohen, M., Lam, D. C., Spanevello, A., Visca, D., Centis, R., Migliori, G. B., Ayuk, A. C., Buendia, J. A., Awokola, B. I., Del-Rio-Navarro, B. E., Muteti-Fana, S., Lao-Araya, M., Chiarella, P., Badellino, H., Somwe, S. W., Anand, M. P., Garcı-Corzo, J. R., Bekele, A., Soto-Martinez, M. E., Ngahane, B. H.M., Florin, M., Voyi, K., Tabbah, K., Bakki, B., Alexander, A., Garba, B. L., Salvador, E. M., Fischer, G. B., Falade, A. G., Zorica Zivkovi, C., Romero-Tapia, S. J., Erhabor, G. E., Zar, H., Gemicioglu, B., Brandão, H. V., Kurhasani, X., El-Sharif, N., Singh, V., Ranasinghe, J. C., Kudagammana, S. T., Masjedi, M. R., Velasquez, J. N., Jain, A., Cherrez-Ojeda, I., Valdeavellano, L. F.M., Gomez, R. M., Mesonjesi, E., Morfin-Maciel, B. M., Ndikum, A. E., Mukiibi, G. B., Reddy, B. K., Yusuf, O., Taright-Mahi, S., Merida-Palacio, J. V., Kabra, S. K., Nkhama, E., Filho, N. R., Zhjegi, V. B., Mortimer, K., Rylance, S., Masekela, R. R.
Publicado 2023 Enlace
B A C K G R O U N D: The aim of these clinical standards is to aid the diagnosis and management of asthma in low-resource settings in low- and middle-income countries (LMICs). M E T H O D S: A panel of 52 experts in the field of asthma in LMICs participated in a two-stage Delphi process to establish and reach a consensus on the clinical standards. R E S U L T S: Eighteen clinical standards were defined: Standard 1, Every individual with symptoms and signs compatible with asthma should undergo a clinical assessment; Standard 2, In individuals (>6 years) with a clinical assessment supportive of a diagnosis of asthma, a hand-held spirometry measurement should be used to confirm variable expiratory airflow limitation by demonstrating an acute response to a bronchodilator; Standard 3, Pre- and post-bronchodilator spirometry should be performed in individuals (>6 years) to support diagnosis be...
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9
artículo
Design, calibration, and performance of the MINERvA detector
Publicado por
Aliaga L., Bagby L., Baldin B., Baumbaugh A., Bodek A., Bradford R., Brooks W.K., Boehnlein D., Boyd S., Budd H., Butkevich A., Martinez Caicedo D.A., Castromonte C.M., Christy M.E., Chvojka J., Da Motta H., Damiani D.S., Danko I., Datta M., Devan J., Draeger E., Dytman S.A., Díaz G.A., Eberly B., Edmondson D.A., Felix J., Fields L., Fiorentini G.A., Flight R.S., Gago A.M., Gallagher H., George C.A., Gielata J.A., Gingu C., Gran R., Grange J., Grossman N., Harris D.A., Heaton J., Higuera A., Hobbs J.A., Howley I.J., Hurtado K., Jerkins M., Kafka T., Kantner M.O., Keppel C., Kilmer J., Kordosky M., Krajeski A.H., Kumbartzki G.J., Lee H., Leister A.G., Locke G., Maggi G., Maher E., Manly S., Mann W.A., Marshall C.M., McFarland K.S., McGivern C.L., McGowan A.M., Mislivec A., Morfín J.G., Mousseau J., Naples D., Nelson J.K., Niculescu G., Niculescu I., O'Connor C.D., Ochoa N., Olsen J., Osmanov B., Osta J., Palomino J.L., Paolone V., Park J., Perdue G.N., Peña C., Pla-Dalmau A., Rakotondravohitra L., Ransome R.D., Ray H., Ren L., Rubinov P., Rude C., Sassin K.E., Schellman H., Schmitz D.W., Schneider R.M., Schulte E.C., Simon C., Snider F.D., Snyder M.C., Solano Salinas C.J., Tagg N., Tice B.G., Tilden R.N., Velásquez J.P., Walton T., Westerberg A.
Publicado 2014 Enlace
The skin is the largest organ of the body that protects it from the external environment. High- frequency ultra sound (HF-US) has been used to visualize the skin in depth and to diagnose some pathologies in dermatological applications. Quantitative ultrasound (QUS) includes several techniques that provide values of particular physical properties. In this thesis work, three QUS parameters are explained and used to characterize healthy skin through HF-US: attenuation coefficient slope (ACS), backscatter coefficient (BSC) and shear wave speed (SWS). They were estimated with the regularized spectral-log difference (RSLD) method, the reference phan- tom method, and the crawling wave sonoelastography method, respectively. All the three parameters were assessed in phantoms, ex vivo and in vivo skin. In calibrated phantoms, RSLD showed a reduc- tion of up to 93% of the standard deviation concern...
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