scholarly journals Instrument-free quantitative gold nanoparticle-based liquid-phase colorimetric assays for use in resource-poor environments

2017 ◽  
Vol 53 (60) ◽  
pp. 8407-8410 ◽  
Author(s):  
Huili Wang ◽  
Yun Zhang ◽  
Rongxing Li ◽  
Jinfang Nie ◽  
Afaf H. El-Sagheer ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Gold Nanoparticle ◽  
Colorimetric Assay ◽  
Quantitative Detection ◽  
Two Dimensional ◽  
New Class ◽  
Naked Eye ◽  
Resource Poor ◽  
Colorimetric Assays

This work describes a new class of gold nanoparticle-based liquid-phase colorimetric assay (GNP-LPCA) termed as two dimensional (2D) GNP-LPCA that enables quantitative detection of model analytes with naked eye.

New two dimensional liquid-phase colorimetric assay based on old iodine–starch complexation for the naked-eye quantitative detection of analytes

2016 ◽  
Vol 52 (47) ◽  
pp. 7454-7457 ◽  
Author(s):  
Jinfang Nie ◽  
Tom Brown ◽  
Yun Zhang
Keyword(s):  
Liquid Phase ◽  
Colorimetric Assay ◽  
Point Of Care ◽  
Low Cost ◽  
Quantitative Detection ◽  
Complexation Reaction ◽  
Two Dimensional ◽  
Eye Detection ◽  
Naked Eye ◽  
Naked Eye Detection

This work describes a new point-of-care two dimensional liquid-phase colorimetric assay (2D LPCA) based on old iodine–starch complexation reaction firstly discovered in 1814 for simple, low-cost, portable, naked-eye detection and quantification of two model analytes.

A naked-eye liquid-phase colorimetric assay of simultaneous detect cysteine and lysine

2019 ◽  
Vol 160 ◽  
pp. 151-158 ◽  
Author(s):  
Zhonghua Xue ◽  
Lulu Xiong ◽  
Honghong Rao ◽  
Xiuhui Liu ◽  
Xiaoquan Lu
Keyword(s):  
Liquid Phase ◽  
Colorimetric Assay ◽  
Naked Eye

New Methods for Analyzing Water Pollutants

1982 ◽  
Vol 14 (4-5) ◽  
pp. 59-71 ◽  
Author(s):  
L H Keith ◽  
R C Hall ◽  
R C Hanisch ◽  
R G Landolt ◽  
J E Henderson
Keyword(s):  
Amino Acids ◽  
Gas Chromatography ◽  
Two Dimensional ◽  
Gas Chromatograph ◽  
New Class ◽  
New Methods ◽  
System A ◽  
Drinking Waters ◽  
Computer Controlled ◽  
Nitrogen Containing Compounds

Two new methods have been developed to analyze for organic pollutants in water. The first, two-dimensional gas chromatography, using post detector peak recycling (PDPR), involves the use of a computer-controlled gas Chromatograph to selectively trap compounds of interest and rechromatograph them on a second column, recycling them through the same detector again. The second employs a new detector system, a thermally modulated electron capture detector (TMECD). Both methods were used to demonstrate their utility by applying them to the analysis of a new class of potentially ubiquitous anthropoaqueous pollutants in drinking waters- -haloacetonitriles. These newly identified compounds are produced from certain amino acids and other nitrogen-containing compounds reacting with chlorine during the disinfection stage of treatment.

scholarly journals Influence of a Standing Wave Flow-Field on the Dynamics of a Spray Diffusion Flame

Fluids ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 27
Author(s):  
J. Barry Greenberg ◽  
David Katoshevski
Keyword(s):  
Liquid Phase ◽  
Flow Field ◽  
Standing Wave ◽  
Diffusion Flame ◽  
Stokes Number ◽  
Flame Height ◽  
Wave Flow ◽  
Two Dimensional ◽  
Governing Equations ◽  
First Time

A theoretical investigation of the influence of a standing wave flow-field on the dynamics of a laminar two-dimensional spray diffusion flame is presented for the first time. The mathematical analysis permits mild slip between the droplets and their host surroundings. For the liquid phase, the use of a small Stokes number as the perturbation parameater enables a solution of the governing equations to be developed. Influence of the standing wave flow-field on droplet grouping is described by a specially constructed modification of the vaporization Damkohler number. Instantaneous flame front shapes are found via a solution for the usual Schwab–Zeldovitch parameter. Numerical results obtained from the analytical solution uncover the strong bearing that droplet grouping, induced by the standing wave flow-field, can have on flame height, shape, and type (over- or under-ventilated) and on the existence of multiple flame fronts.

scholarly journals Does liquid–liquid phase separation drive peptide folding?

2021 ◽  
Author(s):  
Dean N. Edun ◽  
Meredith R. Flanagan ◽  
Arnaldo L. Serrano
Keyword(s):  
Infrared Spectroscopy ◽  
Phase Separation ◽  
Liquid Phase ◽  
Model Membrane ◽  
Peptide Folding ◽  
Two Dimensional ◽  
Intrinsically Disordered ◽  
Intrinsically Disordered Peptide ◽  
Two Dimensional Infrared Spectroscopy ◽  
Liquid Liquid Phase Separation

Two-dimensional infrared spectroscopy reveals folding of an intrinsically disordered peptide when sequestered into a model “membrane-less” organelle.

Gold nanoparticle-based colorimetric assay for cancer diagnosis

2010 ◽  
Vol 25 (8) ◽  
pp. 1869-1874 ◽  
Author(s):  
Jeong-Hun Kang ◽  
Yoji Asami ◽  
Masaharu Murata ◽  
Hirotaro Kitazaki ◽  
Noriaki Sadanaga ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Cancer Diagnosis ◽  
Colorimetric Assay

An ultra-sensitive colorimetric assay for reliable visual detection of telomerase activity

The Analyst ◽  
2017 ◽  
Vol 142 (17) ◽  
pp. 3235-3240 ◽  
Author(s):  
Yaocai Wang ◽  
Luzhu Yang ◽  
Yanjun Wang ◽  
Wei Liu ◽  
Baoxin Li ◽  
...  
Keyword(s):  
Hela Cell ◽  
Visual Detection ◽  
Colorimetric Assay ◽  
Telomerase Activity ◽  
Cell Lysates ◽  
Naked Eye ◽  
Vis Spectroscopy

We proposed a sensitive colorimetric assay for detecting telomerase activity. The telomerase activity of 5 and 20 HeLa cell lysates can be detected via UV-vis spectroscopy and the naked eye, respectively.

Aptamer-gold nanoparticle-based colorimetric assay for the sensitive detection of thrombin

2013 ◽  
Vol 177 ◽  
pp. 818-825 ◽  
Author(s):  
Yi Peng ◽  
Lidong Li ◽  
Xiaojiao Mu ◽  
Lin Guo
Keyword(s):  
Gold Nanoparticle ◽  
Colorimetric Assay ◽  
Sensitive Detection
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