24 research outputs found

    Diseño de un modelo geoespacial de mapas de riesgo ante inundaciones por lluvias del río huertas, para evaluar el grado de vulnerabilidad en el tramo urbano de la ciudad de ambo - provincia de Ambo - región Huánuco 2021

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    El objetivo de esta investigación fue la de desarrollar un modelo geoespacial con la finalidad de determinar las áreas propensas a inundaciones en la cuenca del río Huertas, esto se logró a partir de las metodologías que plantean las instituciones estatales para el control de riesgo como son el INDECI y CENEPRED, adicionalmente a ello para la determinación de áreas propensas a inundaciones se usaron herramientas de información geográfica e informes históricos que se recolectaron de instituciones como el SENAMHI que se encargan de recopilar información hidrológica del país. La identificación del riesgo se elaboró a través de la caracterización física para la zona para la cual se consideraron las siguientes características físicas: geología y relieve de la zona, tipo de suelo, zona de vida, valores de pendiente para la zona, etc. El valor que se determinó para el nivel de vulnerabilidad al que se encuentra la zona de análisis, se logró a partir de identificar los parámetros de la capacidad de adaptación, el nivel de fragilidad al cual se encuentre el área y el nivel de la exposición, al que se encuentre la población aledaña a la zona de investigación; para determinar los valores de riesgo este pues fue el producto de la peligrosidad y vulnerabilidad del área. Finalmente, a partir de los datos y la secuencia de procesos planteados se logró elaborar los mapas temáticos de riesgo, vulnerabilidad y peligro para la zona ubicada en los márgenes de río Huertas con lo que se logró identificar a las poblaciones y zonas que se verán comprometidas frente a inundaciones que se originen por el desborde del río, lo cual es de utilidad para plantear una serie de medidas estructurales y no estructurales con la finalidad de mitigar los efectos que este evento natural pueda causar a la zona urbana

    "Application of Essential Oil of Cinnamon (cinnamomum verum) and Clove (syzygium aromaticum) in the edible coverage and shelf life of the Strawberry (fragaria ananassa)"

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    El objetivo fue Evaluar el recubrimiento comestible con aceites esenciales en la conservación de la fresa. (0.025 y 0.05%) y clavo de olor (0.025% y 0.05%) en la cobertura comestible de la fresa (Fragaria ananassa) en base de polímeros constituido por almidón, gelatina y glicerina, obteniéndose como tratamientos (C1, C2, C3 y C4) prolongar la vida útil de fresa a          temperaturas de refrigeración (2°C), ambientes por 0, 3, 6, 10, 12 y 14 días. Metodología el estudio involucro la extracción de aceites esenciales mediante destilación arrastre con vapor, evaluación fisicoquímica (°Brix, pH, acidez, humedad, textura, ceniza), sensorial (color, sabor y olor) y    microbiológica (recuento de mohos y levaduras). Resultados la concentración de cobertura comestible en fresas fue tratamiento C4, menor porcentaje en pérdida de peso (30.71%) a 14 días a 2ºC. El análisis fisicoquímico reportó en fresas un contenido de solidos solubles (9.02°Brix), pH (3.43), acidez (1.21g/100ml), humedad (84.48%), textura (137g), ceniza (96.16%). En sensorial (color, sabor y olor) el tratamiento C4, tuvo atributo agradable de resultados microbiológicos resultaron negativo con (0.00*103 ufc/g). Conclusión, el resultado de vida útil de la fresa mediante una cobertura comestible con aceites esenciales de canela, clavo de olor reportó variaciones mínimas, parámetros de maduración.The objective was To Evaluate the eatable coating with essential oils in the conservation of the strawberry. (0,025 and 0,05 %) and smell nail (0,025 % and 0,05 % ) in the eatable coverage of the strawberry ( Fragaria ananassa ) in base of polymers constituted by starch, gelatine and glycerine, obteniéndose like treatments ( C1, C2, C3 and C4 ) extending the service life of strawberry to temperatures of refrigeration ( 2 C ), environments for 0, 3, 6, 10, 12 and 14 days. Methodology the study involucre the extraction of essential intervening oils, distillation drag  along with vapor, physicochemical ( Brix, pH, acidity, humidity, texture, ash ), sensorial ( color, taste and smell ) and microbiological evaluation ( score of molds and yeasts ). Results the concentration of eatable coverage in strawberries was treatment C4, minor percentage weight loss (30, 71 %) to 14 days to 2 C. The physicochemical analysis yielded in strawberries a contents of soluble solids ( 9,02 Brix ), pH ( 3,43 ), acidity ( 1.21g/100ml ), humidity ( 84,48 % ), texture ( 137g ), ash ( 96,16 % ). In sensorial (color, taste and smell) the treatment C4, you had pleasant attribute of microbiological results they proved to be minus sign with (0, 00 *103 ufc g). Conclusion, the result of service life of the intervening strawberry an eatable coverage with essential oils of cinnamon, smell nail yielded minimum variations, parameters of maturation

    COVID-19 symptoms at hospital admission vary with age and sex: results from the ISARIC prospective multinational observational study

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    Background: The ISARIC prospective multinational observational study is the largest cohort of hospitalized patients with COVID-19. We present relationships of age, sex, and nationality to presenting symptoms. Methods: International, prospective observational study of 60 109 hospitalized symptomatic patients with laboratory-confirmed COVID-19 recruited from 43 countries between 30 January and 3 August 2020. Logistic regression was performed to evaluate relationships of age and sex to published COVID-19 case definitions and the most commonly reported symptoms. Results: ‘Typical’ symptoms of fever (69%), cough (68%) and shortness of breath (66%) were the most commonly reported. 92% of patients experienced at least one of these. Prevalence of typical symptoms was greatest in 30- to 60-year-olds (respectively 80, 79, 69%; at least one 95%). They were reported less frequently in children (≤ 18 years: 69, 48, 23; 85%), older adults (≥ 70 years: 61, 62, 65; 90%), and women (66, 66, 64; 90%; vs. men 71, 70, 67; 93%, each P < 0.001). The most common atypical presentations under 60 years of age were nausea and vomiting and abdominal pain, and over 60 years was confusion. Regression models showed significant differences in symptoms with sex, age and country. Interpretation: This international collaboration has allowed us to report reliable symptom data from the largest cohort of patients admitted to hospital with COVID-19. Adults over 60 and children admitted to hospital with COVID-19 are less likely to present with typical symptoms. Nausea and vomiting are common atypical presentations under 30 years. Confusion is a frequent atypical presentation of COVID-19 in adults over 60 years. Women are less likely to experience typical symptoms than men

    Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

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    Abstract Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries

    Cálculo Diferencial E Integral De Varias Variables-MA232-200902

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    En el mundo real donde tendrán que desarrollar su actividad los futuros ingenieros casi todos los problemas se desarrollan en un ámbito multidimensional entre otras cosas porque el espacio en que vivimos tiene tres dimensiones porque todos los procesos se desarrollan en el tiempo y porque es difícil encontrar una magnitud que no dependa de una gran número de otras magnitudes. En esta asignatura se desarrollarán los siguientes temas: Superficies cuadráticas Sistemas de coordenadas cilíndricas y esféricas las funciones vectoriales y su aplicación en el movimiento las funciones reales de varias variables el diferencial valores extremos de funciones reales de varias variables campos vectoriales integral doble integral triple integral de línea integral de superficie y sus aplicaciones

    Cálculo Diferencial E Integral De Varias Variables-MA84-200901

    No full text
    En el mundo real donde tendrán que desarrollar su actividad los futuros ingenieros casi todos los problemas se desarrollan en un ámbito multidimensional entre otras cosas porque el espacio en que vivimos tiene tres dimensiones porque todos los procesos se desarrollan en el tiempo y porque es difícil encontrar una magnitud que no dependa de una gran número de otras magnitudes. En esta asignatura se desarrollarán los siguientes temas: Superficies cuadráticas Sistemas de coordenadas cilíndricas y esféricas las funciones vectoriales y su aplicación en el movimiento las funciones reales de varias variables el diferencial valores extremos de funciones reales de varias variables campos vectoriales integral doble integral triple integral de línea integral de superficie y sus aplicaciones

    Irreversible electroporation of the liver: is there a safe limit to the ablation volume?

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    Irreversible electroporation is a fast-growing liver ablation technique. Although safety has been well documented in small ablations, our aim is to assess its safety and feasibility when a large portion of liver is ablated. Eighty-seven mice were subjected to high voltage pulses directly delivered across parallel plate electrodes comprising around 40% of mouse liver. One group consisted in 55 athymicnude, in which a tumor from the KM12C cell line was grown and the other thirty-two C57-Bl6 nontumoral mice. Both groups were subsequently divided into subsets according to the delivered field strength (1000 V/cm, 2000 V/cm) and whether or not they received anti-hyperkalemia therapy. Early mortality (less than 24 hours post-IRE) in the 2000 V/cm group was observed and revealed considerably higher mean potassium levels. In contrast, the animals subjected to a 2000 V/cm field treated with the anti-hyperkalemia therapy had higher survival rates (OR = 0.1, 95%CI = 0.02-0.32, p < 0.001). Early mortality also depended on the electric field magnitude of the IRE protocol, as mice given 1000 V/cm survived longer than those given 2000 V/cm (OR = 4.7, 95% CI = 1.8-11.8, p = 0.001). Our findings suggest that ionic disturbances, mainly due to potassium alterations, should be warned and envisioned when large volume ablations are performed by IRE
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