J L Flores

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The goal of this work was to determine the life parameters of Tetranychus urticae Koch on leaves of 4 rose (Rosa sp.) cultivars. To conduct this experiment a colony of T. urticae collected from ornamentals grown at Saltillo, Coahuila, Mexico, was established on bean (Phaseouls vulgaris L.) seedlings inside a Biotronette chamber at 25 ± 2 °C, 60-70 RH and(More)
Titanium oxides of different surface areas were sulfated then calcined to convert the solid to a strong acid. The amount of sulfur retained by the solid and the thermal stability of the resulting sulfate are controlled by the dispersion of the initial oxide. The acid properties were determined by gravimetry at 383 K, calorimetry using ammonia adsorption at(More)
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