The intense solar radiation of the city of Arequipa has been used as an activation factor for TiO2 anatase to evaluate the decoloration kinetics of the Synozol Red K3BS textile dye. For this purpose, a factorial design (23) was developed to optimize reaction time values, pH and TiO2 doses for 200 mL of solution. The optimal factors for the study were: a 60 min duration, a pH of 3 and 0.1 g of photocatalyst. The first-order kinetic model adequately explained the decoloration of a solution at a concentration of 40 mg/L, showing an excellent reaction rate constant (k=0.0333 min-1) and a decoloration percentage of 86.15%

The scientific studies demonstrate comparatively, the advantagese from aplication of Uncaria Tomentosa. Cat's Claw in the direct pulp capping over using hydroxide of calcium. The treatment with Cat's Claw demonstrate to provoke full cicatrisation o injure pulp with abundant colageno and new formations capilares compared with treatment with Dycal he who to provoke cicatrisation most slowness and moderate with medium quantity of colageno and new formations capilares. To him observe minimun inflammation pulp in alls the cases treatment with Dycal and Cat's Claw.

The scientific studies demonstrate comparatively, the advantagese from aplication of Uncaria Tomentosa. Cat's Claw in the direct pulp capping over using hydroxide of calcium. The treatment with Cat's Claw demonstrate to provoke full cicatrisation o injure pulp with abundant colageno and new formations capilares compared with treatment with Dycal he who to provoke cicatrisation most slowness and moderate with medium quantity of colageno and new formations capilares. To him observe minimun inflammation pulp in alls the cases treatment with Dycal and Cat's Claw.

We obtained rate constant for enzymatic hydrolysis of barley at temperature of 70 ºC.

We obtained rate constant for enzymatic hydrolysis of barley at temperature of 70 ºC.

Subsurface water masses with permanent oxygen deficiency (oxygen minimum zones,OMZ) are typically associated with upwelling regions and exhibit a high sensitivity to climate variability. Over the last decade, several studies have reported a global ocean deoxygenation trend since 1960 and a consequent OMZ expansion.

The research was granted by the ‘Cátedra CONCYTEC en Ciencias del Mar’, sponsored by the Peruvian National Council of Science and Technology and the Universidad Peruana Cayetano Heredia, Master Program of Marine Sciences, and by the Peruvian Marine Research Institute (IMARPE) project INIOX. It was also supported by collaborative projects between the Institut de la Recherche pour le Développement (IRD) and IMARPE: LMI DISCOH and Chaire Croisée PROSUR.