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La contaminación sónica en el Centro Histórico y los centros nocturnos de la ciudad de San Miguel
Publicado 2024“…Sonic pollution has an important impact on human health, which goes far beyond the discomfort generated by noise and of which we are often aware, this type of pollution is considered the second most harmful environmental factor for health, similar to chemical air pollution. Therefore, international organizations such as the WHO coincide in pointing out that the awareness of citizens are fundamental to defeat this invisible enemy. …”
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FACTORES PREDISPONENTES DE NEUMONÍA EN NIÑOS MENORES DE 5 AÑOS
Publicado 2025“…There are multiple predisposing factors involved in the appearance of pneumonia in children aged 0 to 5 years; however, of these factors, those related to the environment include overcrowding, air pollution and exposure to tobacco smoke, and within the factors related to nutrition and childcare, lack of breastfeeding, malnutrition and lack of immunization predominate. …”
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Standard methods of chemical analysis : Industrial and natural products and noninstrumental methods. part A /
Tabla de Contenidos: “…Apparatus, general operations, and reagents: standard laboratory apparatus, sampling, detection of the cations and anions, mechanical separation: separation by precipitation, separation by electrolysis; Solvent extraction, separations by distillation and evaporation; chromatograpy; ion exchange methods in analysis, final gravimetric treatment, titration methods, statistical interpretation; the analytical use of the microscope; quantitative microchemical analysis; cuantitative organic analysis, solubility measurements, determination of water -- Special techniques for industrial products and other special substances: commercial acids and bases, air pollutants, , alloys: iron and steelys; alloys:ferro-alloys, alloys: nonferrous, amino acid analysis of protein hydrolyzates; bituminous substances, including asphalts, tars, and pitches; Portland cement; Chemical analysis in clinical medicine; Coal and coke…”
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