Results 31 to 40 of about 64,372 (396)

Photography by Cameras Integrated in Smartphones as a Tool for Analytical Chemistry Represented by an Butyrylcholinesterase Activity Assay

open access: yesSensors, 2015
Smartphones are popular devices frequently equipped with sensitive sensors and great computational ability. Despite the widespread availability of smartphones, practical uses in analytical chemistry are limited, though some papers have proposed promising
Miroslav Pohanka
doaj   +1 more source

Recent Progress on Optical Biosensors Developed for Nucleic Acid Detection Related to Infectious Viral Diseases

open access: yesMicromachines, 2023
Optical biosensors have many advantages over traditional analytical methods. They enable the identification of several biological and chemical compounds directly, instantly, and without the need of labels.
Ece Eksin, Arzum Erdem
doaj   +1 more source

Evaluating the Whitening and Microstructural Effects of a Novel Whitening Strip on Porcelain and Composite Dental Materials. [PDF]

open access: yes, 2017
AimsThe aim of this project was to evaluate the effects of 2 different whitening strips on color, microstructure and roughness of tea stained porcelain and composite surfaces.Methods54 porcelain and 72 composite chips served as samples for timed ...
Anbarani, Afarin   +5 more
core   +2 more sources

Recent Advances in Biomolecular Detection Based on Aptamers and Nanoparticles

open access: yesBiosensors, 2023
The fast, accurate detection of biomolecules, ranging from nucleic acids and small molecules to proteins and cellular secretions, plays an essential role in various biomedical applications. These include disease diagnostics and prognostics, environmental
Ruiting Xu   +4 more
doaj   +1 more source

Effect of the diameter and colour of colorimeter aperture reducing templates on colour coordinate measurements

open access: yesMateriales de Construccion, 2008
The colour coordinate values measured with the colorimeters presently on the market are the mean of the readings obtained for the surface area covered by the light projection tube.
F. Arroyo   +3 more
doaj   +1 more source

Colorimetry and efficiency of white LEDs : Spectral width dependence [PDF]

open access: yes, 2012
The potential colour rendering capability and efficiency of white LEDs constructed by a combination of individual red, green and blue (RGB) LEDs are analysed.
Davis, Haitz, Martin, O'Donnell, Ohno
core   +1 more source

A Highly Sensitive Dual-Signal Strategy via Inner Filter Effect between Tween 20-Gold Nanoparticles and CdSe/ZnS Quantum Dots for Detecting Cu2+

open access: yesMicromachines, 2023
A highly sensitive and accurate dual-signal strategy is developed for trace Cu2+ detection based on the inner filter effect (IFE) between Tween 20-gold nanoparticles (AuNPs) and CdSe/ZnS quantum dots (QDs).
Yong Xie   +6 more
doaj   +1 more source

Colorimetry technique for scalable characterization of suspended graphene

open access: yes, 2016
Previous statistical studies on the mechanical properties of chemical-vapor-deposited (CVD) suspended graphene membranes have been performed by means of measuring individual devices or with techniques that affect the material.
Cartamil-Bueno, Santiago J.   +5 more
core   +5 more sources

Three-dimensional virtual bone bank system workflow for structural bone allograft selection: a technical report [PDF]

open access: yes, 2013
Structural bone allograft has been used in bone defect reconstruction during the last fifty years with acceptable results. However, allograft selection methods were based on 2-dimensional templates using X-rays.Thanks to preoperative planning platforms ...
Aponte Tinao, Luis   +5 more
core   +3 more sources

Evidence of Springwater Acidification in the Vosges Mountains (North-East of France): Influence of Bedrock Buffering Capacity [PDF]

open access: yes, 1999
Investigations on springwater acidity were carried out in the Vosges mountains (north-eastern France). Acid or poorly buffered spring and streamwaters were detected in the same area.
Dambrine, Etienne   +5 more
core   +2 more sources

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