The role of the Lambert-Beer law in ocean optics is critically examined. The Lambert-Beer law and the three-parameter model of the submarine light field are used to construct an optical energy budget for any hydrosol. It is further applied to the analytical exponential decay coefficient of the light field and used to estimate the optical properties and effects of the dissolved/suspended compone...

The aim of the present work was to study a simple colorimetric and potentiometric biosensor based on urease inhibition by Pb (II) ions for its estimation in milk samples. Urease immobilized on nylon membrane by hydrosol gel method was used as the biocomponent to demonstrate the metal effect on the enzyme activity using phenol red as the pH indicator. A lower limit detection of 38.6μm was achiev...

This article presents the work-in-progress of dynamic modelling works of hydrogen generation in Hydrosol3D project. This project has been based on the results of the Hydrosol II project where a pilot plant at the Plataforma Solar de Almeŕıa (CIEMAT) with the aim of producing continuously hydrogen was set up. The hydrogen is produced from water and concentrated solar radiation, based on a two st...

Angle-resolved signals of polarized light scattered by biological cells provide rich information on cell morphology. Quantitative study of these signals can lead to new methods to develop and improve high-throughput instrumentation for cell probing such as scattering-based flow cytometry. We employ a goniometer system with a photoelastic modulation scheme to determine selected Mueller matrix el...

The biosensor for monitoring asparagine levels in Fruit juices was developed in present research work. Lasparaginase (biocomponent) has been extracted from Withania somnifera (L) Dunal, and immobilized into TEOS hydrosol gel-chitosan matrix. Kinetic characterization of both native and immobilized enzyme was compared. Response time studies had been carried out by Phenol Red indicator coimmobiliz...

Over several billion years, cyanobacteria and plants have evolved highly organized photosynthetic systems to shuttle both electronic and chemical species for the efficient oxidation of water. In a similar manner to reaction centres in natural photosystems, molecular and metal oxide catalysts have been used to photochemically oxidize water. However, the various approaches involving the molecular...