Results 61 to 70 of about 28,173 (303)

Nanomaterial-based optical colorimetric sensors for rapid monitoring of inorganic arsenic species: a review

open access: yesDiscover Nano
Health concerns about the toxicity of arsenic compounds have therefore encouraged the development of new analytical tools for quick monitoring of arsenic in real samples with improved sensitivity, selectivity, and reliability.
Kalayou Hiluf Gebremedhin   +7 more
doaj   +1 more source

Photo-Rheological Fluid-Based Colorimetric Ultraviolet Light Intensity Sensor

open access: yes, 2019
This study presents an introduction to a new type of ultraviolet (UV) light intensity sensor using photo-rheological (PR) fluids whose properties, such as color, can be changed by UV light.
Gi-Woo Kim, Kyung-Pyo Min
core   +1 more source

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

open access: yesFEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point   +7 more
wiley   +1 more source

A Smartphone Colorimetric Sensor Based on Pt@Au Nanozyme for Visual and Quantitative Detection of Omethoate

open access: yesFoods, 2022
A smartphone colorimetric sensor based on the Pt@Au nanozyme was successfully developed for the visual and quantitative detection of omethoate in fruit and vegetables.
Biao Zhang   +9 more
doaj   +1 more source

Rapid screening of staphylokinase protein variants using an unpurified cell‐free expression system

open access: yesFEBS Open Bio, EarlyView.
An unpurified cell‐free protein synthesis (CFPS) platform enables rapid functional screening of staphylokinase variants. Direct plasminogen‐activation assays performed in microplate format provide real‐time activity readouts, allowing rapid identification and ranking of variants with improved or reduced fibrinolytic activity without protein ...
Maria Tomková   +3 more
wiley   +1 more source

A Colorimetric Sensor for Qualitative Discrimination and Quantitative Detection of Volatile Amines

open access: yesSensors, 2010
We have developed a novel colorimetric sensor based on a digital camera and white LED illumination. Colorimetric sensor arrays (CSAs) were made from a set of six chemically responsive dyes impregnated on an inert substrate plate by solution casting.
Zhonglin Tang   +3 more
doaj   +1 more source

Development of a Colorimetric Sensor for Autonomous, Networked, Real-Time Application

open access: yes, 2020
This review describes an ongoing effort intended to develop wireless sensor networks for real-time monitoring of airborne targets across a broad area. The goal is to apply the spectrophotometric characteristics of porphyrins and metalloporphyrins in a ...
Brandy J. Johnson   +2 more
core   +1 more source

Systemic dysregulation of apolipoproteins in amyotrophic lateral sclerosis serum

open access: yesFEBS Open Bio, EarlyView.
Amyotrophic lateral sclerosis (ALS) is a fatal disease that damages motor neurons. This study found that people with ALS show significant changes in blood fats and the proteins that carry them. Several apolipoproteins were higher, lipid balances were altered, and normal protein–lipid relationships were disrupted.
Finula I. Isik   +6 more
wiley   +1 more source

Development of Microfluidic Paper-Based Analytical Devices (µPADs) for Determination of Cd2+, Pb2+, and Cu2+ Ions in Mineral Water

open access: yesJurnal Kimia Sains dan Aplikasi, 2023
Microfluidic paper-based analytical devices (µPADs) have been successfully developed using dual detection: electrochemical and colorimetric systems. The µPADs have the potential to be used as Pb(II), Cd(II), and Cu(II) sensors to test the quality of ...
Andri Hermansyah   +3 more
doaj   +1 more source

Progress in Optical Colorimetric/Fluorometric Sensor Array

open access: yes, 2013
Optical colorimetric/fluorometric sensor array has been widely applied in many fields due to its advantages such as low. cost, easy. operation, and rapid. response.
Jia Ming-Yan, Feng Liang
core   +1 more source

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