It is shown a chemical method to separate Sr90/Ca/Ba from milky samples in order to reduce expenses. The separation of Ca from Sr90/Ba is carried out in ethanol. Ca is evaluated by permanganometry method while the Ba is separated as BaCrO4 and the Sr90 is precipitated as oxalate. The recovery of Sr90 is done by using a trace trailing of Sr85 which is quantified by spectrornetry. The result of the first part shows a chemical recovery of between 79 - 80% and the separation factors are equivalent to 1.

It is shown a chemical method to separate Sr90/Ca/Ba from milky samples in order to reduce expenses. The separation of Ca from Sr90/Ba is carried out in ethanol. Ca is evaluated by permanganometry method while the Ba is separated as BaCrO4 and the Sr90 is precipitated as oxalate. The recovery of Sr90 is done by using a trace trailing of Sr85 which is quantified by spectrornetry. The result of the first part shows a chemical recovery of between 79 - 80% and the separation factors are equivalent to 1.

Se han llevado a cabo experimentos para la reacción de intercambio iónico entre soluciones de iones Cr2O7 2- y resina DOWEX 1X4. Se reporta la concentración de Cr+6 en función del tiempo para pesos de resina que varían entre 0.1 a 0.8 gramos, y para concentraciones iniciales de 50, 100 y 200 ppm. Los datos experimentales son correlacionados con los modelos de difusión cuasi homogéneo y de difusión controlada por la resistencia en la película. Los resultados experimentales indican que se requiere como mínimo un peso de resina igual a 0.75 gramos para reducir la concentración de Cr+6 a 1 ppm en un tiempo aproximado de 1 hora.

Experiments were carried-out for exchange reaction between ions dichromate Cr207 2- solution and resín type DOWEX 1X4. It is reported the concentration of Cr+6 versus raaction time for resin wetghts between O.1 to 0.8 grams and for initial concentrations of 50, 100 and 200 ppm. The experimental data are correlations with the models of homogeneous quasi ditfusion and diflusion control1ed by the liquid film resistance, The experiments show that is required a weight of resin equal to O, 75 grams to reduce the Cr+6 concentration to 1 ppm in 1 hours.

They have carried out experiments for the ion exchange reaction between ions Cr2O7 solutions and ion exchange resin in the chloride form. The concentration profile is reported in equivalent amounts of Cr +6 with time, for 0.1, 0.5 and 0.75 gram of resin. The results indicate that longer times are required at 2500 seconds to reduce the concentration to less than 1 ppm of Cr +6 in a volume of 250 ml of solution stirred at 250 rpm, with an initial concentration of 50 ppm and a weight of 0.75 grams resin.

They have carried out experiments for the ion exchange reaction between ions Cr2O7 solutions and ion exchange resin in the chloride form. The concentration profile is reported in equivalent amounts of Cr +6 with time, for 0.1, 0.5 and 0.75 gram of resin. The results indicate that longer times are required at 2500 seconds to reduce the concentration to less than 1 ppm of Cr +6 in a volume of 250 ml of solution stirred at 250 rpm, with an initial concentration of 50 ppm and a weight of 0.75 grams resin.

The study consists on the treatment of pumping water of the fish flour industry, using flotation systems for dissolved air, sedimentation or others as viable methods of primary treatment tor removal of insoluble materials. An the conditioning of a coagulant or flocculant, organic or inorganic, to destabilize the formed micelles to allow the separation of the organic material with the purpose of reaching an effective removal of fine solids in suspension, emulsified fatty and oils and in this way to reduce the biological demand of oxygen of the effluent discharged to the sea.

The study consists on the treatment of pumping water of the fish flour industry, using flotation systems for dissolved air, sedimentation or others as viable methods of primary treatment tor removal of insoluble materials. An the conditioning of a coagulant or flocculant, organic or inorganic, to destabilize the formed micelles to allow the separation of the organic material with the purpose of reaching an effective removal of fine solids in suspension, emulsified fatty and oils and in this way to reduce the biological demand of oxygen of the effluent discharged to the sea.

We described the benefits of funtional or phytochemicals foods in disease prevention and health promotion. This article is a contribution for the development of this new research area.

We described the benefits of funtional or phytochemicals foods in disease prevention and health promotion. This article is a contribution for the development of this new research area.

The yacon root is a member of the sunflower family. The roots of yacon has inuline. lnuline is a polyfructosane, which helps to moderate blood sugar levels (pass through the digestive tract unmetabolized). Yacon therefore has considerable value to dieters and people with diabetes. The quantitative analysis shows mineral macronutrients (Na, K, Mg, Ca, P). and micronutrients (Fe, Zn, Mn). The qualitative analysis shows very important secondary metabolites (amino acids, carbohydrate, reducing sugars, flavonoides)

The yacon root is a member of the sunflower family. The roots of yacon has inuline. lnuline is a polyfructosane, which helps to moderate blood sugar levels (pass through the digestive tract unmetabolized). Yacon therefore has considerable value to dieters and people with diabetes. The quantitative analysis shows mineral macronutrients (Na, K, Mg, Ca, P). and micronutrients (Fe, Zn, Mn). The qualitative analysis shows very important secondary metabolites (amino acids, carbohydrate, reducing sugars, flavonoides)