Specific surface area is more informative than grain size for fine-grained sediments where Ss > 1 m2/g. In fact, specific plays a central role in engineering properties and processes soils, including pore bioactivity; fabric, plasticity, rheology; hydraulic electrical conductivity; compressibility residual friction angle; all forms of coupled processes. This research advanced dye adsorption met...

We demonstrated a simple, directly-readable approach for high resolution pH sensing. The method was based on sharp changes in Amplified Spontaneous Emission (ASE) of a Stilbene 420 (ST) laser dye triggered by the pH-dependent absorption of Bromocresol Green (BG). The ASE threshold of BG:ST solution mixtures exhibited a strong dependence on BG absorption, which was drastically changed by the var...

CIE colorimetry was introduced 65 years ago to describe the colorimetric properties of coloured lights and signals. Soon after establishment it turned out that it is most capable to describe the colorimetry of reflective media and is now widely applied in all branches of the colouring industries (e.g. in the textile, paper and automotive industry), where the aim is to produce as far as possible...

The aim of this study was to evaluate the potential colorimetry characterize six species (Hymenolobium petraeum, Dipteryx odorata, Ormosia sp., Enterolobium maximum, Hymenaea courbaril e Pseudopiptadenia suaveolens) Fabaceae family. Wood samples were collected in extractivist communities Pará state, Brazil. Colour data obtained randomly on three anatomical sections, along with reflectance spect...

The differential scanning colorimetry (DSC) thermooxidative stability of new copolymers styrene-sulfonic acid and N-vinylimidazole obtained by radical copolymerization in a DMF solution an argon atmosphere has been studied

Representation models are very important in Applied Computational Mathematics (Requicha, 1980), (Gomes & Velho, 1992). In this work we introduce a model for color space representation. Using this model we construct a mathematical framework that enables us to develop systematically the classical results in the area of colorimetry without the need to use Grassmann Laws as a basic set of axioms fo...

Results are presented of a continued investigation of the infrared colorimetry of the Martian bright and dark areas. Laboratory comparisons indicate that the infrared color profile of the Martian deserts matches that of a naturally occurring limonite stain which forms and is preserved on igneous rocks in a terrestrial desert environment. The co]orimetry of the Martian dark regions is compared t...