Results 21 to 30 of about 20,858 (311)

Protection of mild steel in 3 M HCl solution by Areca root extract: development of green and sustainable corrosion inhibitor [PDF]

open access: yesJournal of Water and Environmental Nanotechnology, 2019
The corrosion inhibition effect of Areca root extract on the mild steel (MS) surface in the 3 M HCl solution was examined by gasometric, colorimetric, Tafel plot, impedance and atomic absorption spectroscopy techniques.
Narasimha Raghavendra   +2 more
doaj   +1 more source

Evaluation of the effect of quinoa germ on the chromatic properties of tomato sauce

open access: yesAgronomía Colombiana, 2023
Tomato sauce is one of the most consumed dish components in the world; and, for this reason, it is one of the most studied in the food industry. The objective of this research was to evaluate the effect of quinoa germ on the chromatic properties of ...
Alex Danny Chambi-Rodríguez   +3 more
doaj   +1 more source

Method for determining color and chromaticity coordinates according to the original image

open access: yesФизика волновых процессов и радиотехнические системы, 2019
In this paper, a description is given of the method of colorimetry of an image of an object under investigation according to its photograph or scanned copy.
L.D. Lozhkin   +5 more
doaj   +1 more source

A Gaussian Process Model for Color Camera Characterization: Assessment in Outdoor Levantine Rock Art Scenes

open access: yesSensors, 2019
In this paper, we propose a novel approach to undertake the colorimetric camera characterization procedure based on a Gaussian process (GP). GPs are powerful and flexible nonparametric models for multivariate nonlinear functions. To validate the GP model,
Adolfo Molada-Tebar   +3 more
doaj   +1 more source

Hand-held Colorimetry Sensor Platform for Determining Salivary α-Amylase Activity and Its Applications for Stress Assessment

open access: yesSensors, 2019
This study develops a hand-held stress assessment meter with a chemically colorimetric strip for determining salivary α-amylase activity, using a 3,5 dinitrosalicylic acid (DNS) assay to quantify the reducing sugar released from soluble starch via &#
Hsien-Yi Hsiao   +3 more
doaj   +1 more source

Daylight Spectrum Index: A New Metric to Assess the Affinity of Light Sources with Daylighting

open access: yesEnergies, 2018
The current scenario of colorimetry shows a wide variety of different metrics which do not converge in the assessment of the color rendering of light sources.
Ignacio Acosta   +2 more
doaj   +1 more source

New Single-Layered Paper-Based Microfluidic Devices for the Analysis of Nitrite and Glucose Built via Deposition of Adhesive Tape

open access: yesSensors, 2019
A simple, low-cost technique has been developed for the rapid fabrication of single-layered paper-based microfluidic devices (μPADs). This technique, for the first time, made use of the deposition of patterned adhesive tape into the filter paper to ...
Peng Yu, Muhan Deng, Yi Yang
doaj   +1 more source

Synthesis and characterization of lanthanum- and yttrium-doped Fe2O3 pigments Síntese e caracterização de pigmentos de Fe2O3 dopados com lantânio e ítrio

open access: yesCerâmica, 2007
Iron oxide has been doped with rare earth ions (yttrium or lanthanum) aiming at producing ceramic pigments with hues that vary from orange to brown. The powders were synthesized from polymeric precursors using the Pechini method and subsequently calcined
D. M. A. Melo   +5 more
doaj   +1 more source

Colorimetría mediante fotografía digital para la determinación de azul de metileno: fotodegradación catalizada con TiO2

open access: yesACI Avances en Ciencias e Ingenierías, 2018
The students of a General Chemistry class made absorbance measurements in different concentration methylene blue solutions, through the color analysis of solutions pictures.
Pablo A. Cisneros-Pérez   +2 more
doaj   +1 more source

Study of possibility low calorie biscuit production by using stevioside sweetener [PDF]

open access: yesPizhūhish va Nuāvarī dar ̒Ulūm va Sanāyi̒-i Ghaz̠āyī, 2014
Stevioside is a natural sweetener which is extracted from the leaves of Stevia Rebaudiana Bertoni plant that doesn't have the role of calorie cleansing and doesn't have the effect on increasing the level of blood glucose.
Mehdi Vatankhah   +4 more
doaj   +1 more source

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