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  • 1
    Keywords: Electronic books
    Description / Table of Contents: Cubíerta -- Copyright -- Prólogo -- Editores de la versión en Español -- Sobre el libro y el curso en línea -- Tabla de Contenido -- 1. Desarrollo del Tratamiento de Aguas Residuales -- 1.1. Factores mundiales para el saneamiento -- 1.2 Historia del tratamiento de las aguas residuales -- Referencias -- Agradecimientos -- 2. Metabolismo Microbiano -- 2.1 Introducción -- 2.2 Elementos de microbiología -- 2.2.1 Clasificación de los microrganismo -- 2.2.2 Estructura de la célula y componentes -- 2.2.3 Funciones de las bacterias -- 2.2.4 Caracterización de las bacterias -- 2.2.4.1 Hibridación fluorescente in situ -- 2.2.4.2 Reacción de polimerasa en cadena y la electroforesis en gel con gradiente desnaturalizante -- 2.2.5 Bionergética bacteriana -- 2.2.6 Requerimientos nutricionales para el crecimiento microbiano -- 2.2.7 Fuentes de carbono y energía y la diversidad microbiana -- 2.2.8 Condiciones ambientales (oxígeno, temperatura, toxicidad) -- 2.2.8.1 Oxígeno -- 2.2.8.2 Temperatura -- 2.3 Estequiometría y energética -- 2.3.1 Demanda química de oxígeno teórica (DQOt) y los equivalentes de electrones -- 21 2.3.2 Crecimiento celular -- 2.3.3 Rendimiento y energía -- 2.3.3.1 Energía del catabolismo -- 2.3.3.2 Fracción de síntesis y rendimiento de biomasa -- 2.3.3.3 Rendimiento observado de la estequiometría -- 2.3.3.4 Estimación del rendimiento verdadero a partir de la bioenergética -- A. Reacción que proporciona energía (catabolismo) -- B. Energía requerida para síntesis de células (anabolismo) -- C. Energía total para la reacción de crecimiento (metabolismo) -- D. Rendimiento verdadero (Y) -- 2.3.3.5 Ejemplo: Estimar el rendimiento verdadero a partir de la bioenergética para la oxidación aerobia de glucosa con amoníaco como fuente de nitrógeno -- A. Reacción que proporciona energía (catabolismo).
    Type of Medium: Online Resource
    Pages: 1 online resource (587 pages)
    Edition: 1st ed.
    ISBN: 9781780409146
    Language: Spanish
    Note: Description based on publisher supplied metadata and other sources
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Analytica Chimica Acta 243 (1991), S. 115-119 
    ISSN: 0003-2670
    Keywords: Aluminium ; Fluorimetry ; Waters
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Analytica Chimica Acta 262 (1992), S. 91-96 
    ISSN: 0003-2670
    Keywords: Aluminium Waters ; Flow system ; Fluorimetry
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Analytica Chimica Acta 243 (1991), S. 121-125 
    ISSN: 0003-2670
    Keywords: Aluminium ; Fluorimetry ; Waters
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0022-328X
    Keywords: CS"2 complexes ; Cyclopentadienyl complexes ; Hydrides ; Insertion ; Niobium
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Analytica Chimica Acta 283 (1993), S. 489-493 
    ISSN: 0003-2670
    Keywords: Flow injection ; Fluoride ; Fluorimetry ; Kinetic methods ; Waters
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' journal of analytical chemistry 354 (1996), S. 204-207 
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract.  A flow injection-spectrofluorimetric method is reported for the determination of Al(III) based on the use of Eriochrome Red B and hexamethylenetetramine buffer, sensitized by the presence of fluoride at 80 °C. Various chemical and physical variables affecting the reaction in the flow system were evaluated. The method is very sensitive with a detection limit of 0.1 μg l-1 and a precision at the 5 μg l-1 level of 2.6%. The calibration range is linear up to 1000 μg l-1. The method has been successfully applied to the determination of Al (III) in tap and mineral waters and urine samples.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1573-7195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Une enquête auprès des utilisatrices et du personnel de santé participant au programme de planning familial ISSS a fait ressortir l'intérêt que suscitait l'inclusion d'une préparation administrée par injection une fois par mois en tant que méthode contraceptive offerte par cette institut. Le produit contenant 150 mg d'acétophénide de dihydroxyprogestérone (DHPA)+10 mg d'énanthate d'oestradiol (E2EN) a été choisi pour mener une étude ouverte et prospective en vue de déterminer dans quelle mesure il était efficace et tolérable. Entre janvier 1992 et mars 1994, 7.054 femmes ont été traitées avec ce produit, correspondant à un total de 60.010 mois. Constituées en groupe échantillon, 4.505 femmes ont fréquenté l'institut, nous permettant de confirmer qu'en moyenne les utilisatrices étaient jeunes, avaient un ou deux enfants, ne correspondaient pas à une distribution géographique particulière et choisissaient l'injection mensuelle comme première méthode contraceptive ou après la période puerpérale, de préférence aux contraceptifs oraux. Le produit étudié s'est avéré hautement efficace (indice de Pearl 0,018) et tolérable (taux de retrait général pendant la durée de l'étude: 27,09%). Les effets négatifs les plus fréquents comprenaient des troubles de saignements, des céphalées et des mastalgies; ces troubles diminuaient spontanément à partir du sixième mois (3,9%), cessant totalement après deux ans. Le traitement a été abandonné par 3,47% des femmes à cause d'effets négatifs. Aucun changement significatif n'a été observé ni dans le poids corporel, ni dans la pression sanguine systolique et diastolique. Sur la base de ces résultats, le contraceptif mensuel injectable a été inclus dans la liste des produits de base de l'ISSS.
    Abstract: Resumen Un estudio entre usuarias y personal de atención de la salud del Programa de Planificación Familiar ISSS indicó interés en incluir una preparación mensual inyectable como método anticonceptivo ofrecido por dicha institución. La formulación que contenía 150 mg de acetofenida de dihidroxiprogesterona (DHPA) y 10 mg de enantato de estradiol (E2EN) fue elegida para realizar un estudio prospectivo abierto sobre eficacia y tolerabilidad. Entre enero de 1992 y marzo de 1994, se trató a 7.054 mujeres con este producto durante un total de 60.010 meses. Una muestra compuesta de 4.505 mujeres atendidas en dicho instituto permitió confirmar que las usuarias medias son jóvenes, tienen uno o más hijos, no señalan ninguna distribución geográfica en particular y eligen la inyección mensual en vez de los anticonceptivos orales como primer método anticonceptivo o para el puerperio. La formulación estudiada registró una alta tasa de eficacia (Indice de Pearl: 0,018) y tolerabilidad (tasa general de interrupción durante el estudio: 27,09%). Los acontecimientos adversos más frecuentes comprendieron perturbaciones de sangrado, dolor de cabeza y mastalgia; su incidencia disminuyó espontáneamente a partir del sexto mes (3,9%), reduciéndose al 0% al cabo de dos años. El tratamiento fue abandonado debido a acontecimientos adversos por el 3,47% de las mujeres. No se observó ningún cambio significativo del peso corporal o de la tensión arterial sistólica o diastólica. En base a estos resultados, el anticonceptivo inyectable mensual se incluyó en la lista básica de productos del ISSS.
    Notes: Abstract A survey among users and health personnel participating in the Salvadorian Social Security Institute (ISSS) Family Planning Program revealed interest in including a monthly preparation for injection as a contraceptive method offered by this Institution. The formulation containing dihydroxyprogesterone acetophenide (DHPA) 150 mg + estradiol enantate (E2EN) 10 mg was chosen for conducting an open and prospective study of efficacy and tolerability. Between January 1992 and March 1994, 7054 women were treated with this product for a total of 60010 months. A sample composed of 4505 women treated at this Institution confirmed that average users are young, have one or two children, do not show a particular geographical distribution and choose the monthly injection instead of oral contraceptives as the first contraceptive method or for the puerperium. The study formulation showed a high efficacy (Pearl Index: 0.018) and tolerability (general withdrawal rate throughout the study: 27.09%). The most frequent adverse events included bleeding disorders, headache and mastalgia; their incidence decreased spontaneously from the sixth month (3.9%), reaching 0% after two years. Treatment was discontinued due to adverse events in 3.47% of women. No significant bodyweight or systolic and diastolic blood pressure alterations were observed. Based on these results, the monthly injectable contraceptive was included in the basic product list at ISSS.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 256 (1999), S. 78-82 
    ISSN: 1434-4726
    Keywords: Key words Transglottic carcinoma of the larynx ; Laryngectomy ; Preoperative tracheotomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To evaluate the impact of the practice of a preoperative tracheotomy and different prognostic factors reported in the literature in patients with transglottic carcinoma of the larynx, a retrospective study was performed in the Instituto Nacional de Cancerologia, Mexico City. In all, 90 cases with T3 transglottic squamous cell carcinoma requiring a total laryngectomy as primary treatment were studied. Prognostic factors such as the Karnofsky index, tumor differentiation, surgical margins and preoperative tracheotomy were analyzed by a Cox’s proportional hazards model. The Kaplan-Meier method and log rank test were used to evaluate the disease-free intervals and survival curves. Thirty-two patients had preoperative tracheotomies, while 58 did not. Eighty percent of the patients in the non-preoperative tracheotomy group were alive after 5 years versus 20% of those with preoperative tracheotomies (P 〈 0.001). Although possibly controversial, our findings indicate that a pretreatment tracheotomy should be avoided in T3 transglottic obstructive lesions. In patients with these lesions and a subglottic extension ≤ 3 cm we recommend an emergency total laryngectomy when possible to increase survival and decrease surgical morbidity.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 256 (1999), S. 476-477 
    ISSN: 1434-4726
    Keywords: Key words Thyroid nodules ; Thyroid carcinoma ; Needle ; aspiration biopsy ; Thyroidectomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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