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Mostrando ítems 11-20 de 20
Physicochemical Principles of dyes used In MicrobiologyPrincipios físicoquímicos de los colorantes utilizados en microbiología Principios físicoquímicos de los colorantes
(Universidad Colegio Mayor de Cundinamarca, 2020-02-10)
The use of dyes in the identification processes in microbiology is based on the physicochemical properties of these substances. In the field of physics, optics explains how all objects are observable depending on the wavelengths that are absorbed and transmitted within the so-called "visible spectrum". These transitions are, in turn, due to chemical compounds and the electronic movements within atoms. Likewise, when a ...
Bacteria, nutrition and growth: a look from chemistryLas bacterias, su nutrición y crecimiento: una mirada desde la química
(Universidad Colegio Mayor de Cundinamarca, 2021-09-20)
Nutrition is a set of processes and reactions by which living beings take from the environment, in which they inhabit, the chemical substances they need to grow, multiply and make use of energy.
The aforementioned substances are called nutrients and are used for two purposes: energetic when required for maintenance and biosynthetics when required for the synthesis of components (anabolism). In the first case (energetic) ...
Bacillus sphaericus: vector control strategies that produce malaria, yellow fever, and dengueBacillus sphaericus: biocontrolador de vectores que producen malaria, fiebre amarilla y dengue
(Universidad Colegio Mayor de Cundinamarca, 2009-12-15)
The increased incidence of diseases of public health such as malaria, dengue and yellow fever associated to side effects of the use of chemical pesticides and the resistance generated has prompted the search for new alternatives for the elimination of its vectors. A viable option is the entomopathogenic bacteria Bacillus sphaericus, first described in 1904 by Neide and Meyer who discovered spore-forming bacteria that ...
Descriptive study of manufacturing practices of panela (Brown sugar) industry from the San Francisco and La Esmeralda mills (Boyacá and Caldas, Colombia)Estudio descriptivo de las prácticas de manufactura en la industria panelera de los trapiches San Francisco y La Esmeralda en Boyacá y Caldas.
(Universidad Colegio Mayor de Cundinamarca, 2012-12-15)
In this study was evaluated the implementation of manufacturing practices in the San Francisco and La Esmeralda mills through ethnographic surveys, photographic evidence and recovery of microbiological contaminants from panela, employees hands and working tools. A significant proportion of samples from hands, work tools and panela were found contaminate with bacteria such as Staphylococcus epidermidis, Streptococcus ...
Determination of bacterial human pathogens in irrigation water of the savannah of Bogota high watershedDeterminación de la presencia de bacterias patógenas para el humano en aguas de riego en la cuenca alta de la sabana de Bogotá; D.C. Colombia
(Universidad Colegio Mayor de Cundinamarca, 2014-12-15)
Objective: To determine the presence of bacterial human pathogens in irrigation water of the savannah of Bogota high watershed. Materials and methods: Samples were collected from 8 municipalities, 8 of which were randomly selected for a number of tests including detection of total coliforms via filtration membrane, Most Probable Number (MPN) for fecal coliforms; isolation on selective media and biochemical identification ...
Pseudomonas oryzihabitans: un microorganismo de creciente interés científico
(Universidad Colegio Mayor de Cundinamarca, 2009-06-15)
Este artículo tiene por objetivo determinar las características microbiológicas, bioquímicas y moleculares de la bacteria Pseudomonas oryzihabitans, la importancia que tiene en la salud pública y su competencia como agentenosocomial. Se establecen las condiciones de sostenibilidad in vitro para proyectar su uso en diferentes áreas biotecnológicas como: agroambiental, particularmente como biocontrolador de larvas y ...
Microorganismos potencialmente fitopatógenos en aguas de riego proveniente de la cuenca media del rio Bogotá
(Universidad Colegio Mayor de Cundinamarca, 2018-09-10)
Objetivo. Identificar microorganismos fitopatógenos presentes en las aguas utilizadas para riego en la cuenca media del rio Bogotá. Métodos. Las muestras fueron tomadas en doce fincas de la cuenca media y analizadas con la técnica de filtración por membrana. Las bacterias se identificaron por bioquímica y los hongos por claves dicotomas. Resultados. El agua de riego analizada contenía bacterias como: E.coli, P. vulgaris, ...
Bacteria, nutrition and growth: a look from chemistryLas bacterias, su nutrición y crecimiento: una mirada desde la química
(Universidad Colegio Mayor de Cundinamarca, 2021-09-20)
Nutrition is a set of processes and reactions by which living beings take from the environment, in which they inhabit, the chemical substances they need to grow, multiply and make use of energy.
The aforementioned substances are called nutrients and are used for two purposes: energetic when required for maintenance and biosynthetics when required for the synthesis of components (anabolism). In the first case (energetic) ...
Physicochemical Principles of dyes used In MicrobiologyPrincipios físicoquímicos de los colorantes utilizados en microbiología Principios físicoquímicos de los colorantes
(Universidad Colegio Mayor de Cundinamarca, 2020-02-10)
The use of dyes in the identification processes in microbiology is based on the physicochemical properties of these substances. In the field of physics, optics explains how all objects are observable depending on the wavelengths that are absorbed and transmitted within the so-called "visible spectrum". These transitions are, in turn, due to chemical compounds and the electronic movements within atoms. Likewise, when a ...
Evaluación de la calidad del agua de la vereda Río Suárez de Puente Nacional, Santander
(Universidad Colegio Mayor de Cundinamarca, 2021-12-23)
Objective: To determine the quality of the water that supplies the population of the Vereda Rio Suarez of the municipality of Puente Nacional through the calculation of the risk index of water quality (IRCA). Methods: 10 samples were taken from different points of the water distribution network, physical-chemical and microbiological analysis was performed by membrane filtration technique under parameters of the National ...