نتایج جستجو برای: biosensor

تعداد نتایج: 9306  

ژورنال: سلامت و محیط زیست 2015
احسانی, علی, سبزی, رضا, صحت نیا, بهارک, مناف فر, رامین,

Background and Objectives: Polycyclic aromatic hydrocarbons (PAHs) are widespread environmental contaminants in aquatic environments. These contaminants are generated through oil spills, manufactory processes, and industrial wastes or naturally through the incomplete combustion of coal, oil, gas, and wood waste. Most of these compounds are noted as carcinogenic and mutagenic. Therefore, detecti...

Journal: :J. Sensors 2012
Kimleang Khun Zafar Hussain Ibupoto Omer Nur Magnus Willander

The fabrication of galactose biosensor based on functionalised ZnO nanorods is described. The galactose biosensor was developed by immobilizing galactose oxidase on ZnO nanorods in conjunction with glutaraldehyde as a cross-linker molecule. The IRAS study provided evidence for the interaction of galactose oxidase with the surface of ZnO nanorods. The electromotive force (EMF) response of the ga...

2008
Romas Baronas Juozas Kulys

The response of an amperometric biosensor based on a chemically modified electrode was modelled numerically. A mathematical model of the biosensor is based on a system of non-linear reaction-diffusion equations. The modelling biosensor comprises two compartments: an enzyme layer and an outer diffusion layer. In order to define the main governing parameters the corresponding dimensionless mathem...

2014
Vinay Bhardwaj Anthony J. McGoron

McGoron A.J., Research Guide Professor Email: [email protected] Phone: +1-305-348-1352 Abstract The detection, identification and monitoring of chemical and biological toxins (CBTs) released during warfare and disaster into the environment has critical global importance. The aim of this review article is to give a clear picture of the trend in the development of biosensor technologies for the de...

2017
Linlin Sun Chunli Zheng Thomas J Webster

Over the last several decades, a great number of advances have been made in the area of self-assembled supramolecules for regenerative medicine. Such advances have involved the design, preparation, and characterization of brand new self-assembled peptide nanomaterials for a variety of applications. Among all biomolecules considered for self-assembly applications, peptides have attracted a great...

2018
Berna Dalkıran Ceren Kaçar Pınar Esra Erden Esma Kılıç

Zinc oxide nanoparticles (ZnONPs), multiwalled carbon nanotubes (MWCNTs) and 1,4benzoquinone (BQ) dispersed in chitosan (CS) matrix were used to construct a xanthine biosensor. Xanthine oxidase (XOx) was immobilized onto BQ-MWCNTs-ZnO–CS composite modified glassy carbon electrode (GCE) using glutaraldehyde as the crosslinking agent. The parameters of the construction process and the experimenta...

Journal: :Journal of molecular recognition : JMR 2001
Rebecca L Rich David G Myszka

We identified 1219 articles published in 2006 that described work performed using commercial optical biosensor platforms. It is interesting to witness how the biosensor market is maturing with an increased number of instrument manufacturers offering a wider variety of platforms. However, it is clear from a review of the results presented that the advances in technology are outpacing the skill l...

2005
Mustafa Kemal Sezgintürk Erhan Dinçkaya

An amperometric benzoic acid-sensing inhibitor biosensor was prepared by immobilizing mushroom (Agaricus bisporus) tissue homogenate on a Clark-type oxygen electrode. The effects of the quantity of mushroom tissue homogenate, the quantity of gelatin and the effect of the crosslinking agent glutaraldehyde percent on the biosensor were studied. The optimum concentration of phenol used as substrat...

2016
I. M. APETREI C. DIACONU C. APETREI C. GEORGESCU

A novel biosensor based on carbon nanofibers/diamine oxidase was prepared by modification of screen-printing electrodes. The enzyme diamine oxidase was immobilized onto the carbon nanofibers modified carbon screen-printed electrodes by drop and dry method followed by cross-linking reaction with glutaraldehyde. The presence of norepinephrine in analyzed samples was correlated to increasing of ca...

Journal: :Microscopy research and technique 2012
Elizabeth Hinde Michelle A Digman Christopher Welch Klaus M Hahn Enrico Gratton

We present here the phasor approach to biosensor Förster resonance energy transfer (FRET) detection by fluorescence lifetime imaging microscopy (FLIM) and show that this method of data representation is robust towards biosensor design as well as the fluorescence artifacts inherent to the cellular environment. We demonstrate this property on a series of dual and single chain biosensors, which re...

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