Aptasensor for the simple detection of ochratoxin A based on side-by-side assembly of gold nanorods

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 50437-50443 ◽  
Author(s):  
Xia Xu ◽  
Chengnan Xu ◽  
Yibin Ying
Keyword(s):  
Ochratoxin A ◽  
Gold Nanorods ◽  
Simple Detection ◽  
One Step ◽  
The One

A new aptasensor based on the side-by-side assembly of gold nanorods (GNRs) was studied for the one-step determination of ochratoxin A (OTA).

Simultaneous analysis of fluorescence decay curves for the one-step determination of the mean aggregation number of aqueous micelles

1988 ◽  
Vol 146 (3-4) ◽  
pp. 337-342 ◽  
Author(s):  
Noël Boens ◽  
Hongwen Luo ◽  
Mark van der Auweraer ◽  
Steven Reekmans ◽  
Frans C. De Schryver ◽  
...  
Keyword(s):  
Aggregation Number ◽  
Fluorescence Decay ◽  
Simultaneous Analysis ◽  
One Step ◽  
The Mean ◽  
The One ◽  
Aqueous Micelles

A Ratiometric Fluorescent Probe Based on Carbon Dots and Bimetallic Nanoclusters for the Assay of Copper Gluconate and Copper Sulfate

NANO ◽  
2021 ◽  
pp. 2150114
Author(s):  
Yucong Fan ◽  
Weihua Yu ◽  
Yue Hu ◽  
Yunwen Liao ◽  
Xiaohui Jiang ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Limit Of Detection ◽  
Molar Ratio ◽  
Cupric Sulfate ◽  
Selective Determination ◽  
Bimetallic Nanoclusters ◽  
One Step ◽  
The One

Doping Ag-enhanced and glutathione-stabilized Au nanoclusters (GSH–Ag/AuNCs) were prepared by the one-step ultraviolet radiation combined with microwave heating method. The effects of the molar ratio of Au–Ag and different types of energy suppliers on the fluorescent performance of GSH–Ag/AuNCs were studied in detail. After that, a new ratio fluorescent probe (RF-probe) based on the mixing of GSH–Ag/AuNCs with carbon dots (CDs) was designed for sensitive and selective determination of copper gluconate (CG) and cupric sulfate (CS). For the CDs–GSH–Ag/AuNCs RF-probe, the fluorescence (FL) of CDs (at 440[Formula: see text]nm) and that of alloy nanoclusters (NCs) (at 605[Formula: see text]nm) were, respectively, unaffected and strongly quenched in the presence of CG/CS at [Formula: see text][Formula: see text]nm coming from the dynamic quenching process. Corresponding linear ranges and limit of detection (LOD) of the RF-probe for the CG/CS assay were estimated to be 0.17–6.20/0.17–5.62[Formula: see text][Formula: see text]mol/L and 16.80/15.95[Formula: see text]nmol/L, respectively. Furthermore, the proposed RF-probe was successfully used for the assays of CG in CG tablets and CG additive, and CS in infant formula and CS additive, respectively.

Monoclonal antibody-based immunoenzymometric assays of retinol-binding protein

1993 ◽  
Vol 39 (3) ◽  
pp. 472-476 ◽  
Author(s):  
A B Pereira ◽  
S K Nishida ◽  
J G Vieira ◽  
M T Lombardi ◽  
M S Silva ◽  
...  
Keyword(s):  
Binding Protein ◽  
Retinol Binding Protein ◽  
Good Precision ◽  
Routine Work ◽  
One Step ◽  
High Concentrations ◽  
The One ◽  
Convoluted Tubules ◽  
Good Agreement

Abstract Retinol-binding protein (RBP) is a low-molecular-mass protein (21 kDa), easily filtered in renal glomeruli and very efficiently reabsorbed by the proximal convoluted tubules (PCTs). In PCT dysfunction, high concentrations of RBP are found in urine. Several methods have been used to determine RBP in serum or urine. We describe the production, selection, labeling, and utilization of anti-RBP monoclonal antibodies in two- or one-step immunoenzymometric assays for the determination of RBP. The one-step assay has good precision, with within-run and between-run CVs < 6.6% and 5.9%, respectively. Comparison with radial immunodiffusion (x) showed good agreement: y = 0.068 mg/L + 0.899x (n = 24). Comparison between the one-step (y) and two-step (x) versions of the assay also showed a very good correlation: y = 212 micrograms/L + 0.910x. The one-step assay has been adopted for routine work; it detects transthyretin-bound as well as free RBP and may have clinical usefulness in evaluating the functional status of PCTs.

One-Bath Dyeing Technology for Cotton Blended Fabric - Part 1: Elaboration of a Dyebath Content

2018 ◽  
Vol 762 ◽  
pp. 385-389 ◽  
Author(s):  
Anna Borisova
Keyword(s):  
Disperse Dyes ◽  
Industrial Testing ◽  
One Step ◽  
One Bath Dyeing ◽  
The One

The present study deals with the one-step one-bath dyeing of twill weaved 50/50 cotton/polyester blended fabric using disperse dyes only. The study includes dyeing recipe development, considering the determination of optimum concentrations of dyestuff and auxiliaries, and sufficient pH of dyebath. The proposed method is time consuming and hence can be recommended for industrial testing.

Applicability of the one-step DVS method for the determination of amorphous amounts for further different hydrophilic and hydrophobic drugs

2015 ◽  
Vol 94 ◽  
pp. 333-341 ◽  
Author(s):  
Thorsten Müller ◽  
Regina Scherließ ◽  
Jörg Schiewe ◽  
Rüdiger Smal ◽  
Claudius Weiler ◽  
...  
Keyword(s):  
Hydrophobic Drugs ◽  
One Step ◽  
The One

scholarly journals Approaches to Biomass Kinetic Modelling: Thermochemical Biomass Conversion Processes

2021 ◽  
Vol 4 (Vol4) ◽  
pp. 1-13
Author(s):  
Omar Al-Ayed
Keyword(s):  
Activation Energy ◽  
Kinetic Models ◽  
Design Procedure ◽  
Network Models ◽  
Frequency Factor ◽  
Biomass Pyrolysis ◽  
Kinetic Triplet ◽  
One Step ◽  
The One

Modeling of biomass pyrolysis kinetics is an essential step towards reactors design for energy production. Determination of the activation energy, frequency factor, and order of the reaction is necessary for the design procedure. Coats and Redfern's work using the TGA data to estimate these parameters was the cornerstone for modeling. There are two significant problems with biomass modeling, the first is the determination of the kinetic triplet (Activation energy, Frequency factor, and the order of reaction), and the second is the quantitative analysis of products distribution. Methods used in modeling are either One-step or Multistep methods. The one-step techniques allow the determination of kinetic triplet but fail to predict the product distribution, whereas multistep processes indicate the product's distribution but challenging to estimate the parameters. Kissinger, Coats, and Redfern, KAS, FWO, Friedman are one-step methods that have been used to estimate the kinetic parameters. In this work, after testing more than 500 data points accessed from different literature sources for coal, oil shale, solid materials, and biomass pyrolysis using one-step global method, it was found that the activation energy generated by KAS or FWO methods are related as in the following equations: 𝐸𝐾𝐴𝑆 = 0.9629 ∗ 𝐸𝐹𝑊𝑂 + 8.85, with R² =0.9945 or 𝐸𝐹𝑊𝑂 = 1.0328 ∗ 𝐸𝐾𝐴𝑆 − 8.0969 with R2= 0.9945. The multistep kinetic models employed the Distributed Activation Energy Model (DAEM) using Gaussian distribution, which suffers from symmetry, other distributions such as Weibull, and logistic has been used. These multistep kinetic models account for parallel/series and complex, primary and secondary biomass reactions by force-fitting the activation energy values. The frequency factor is assumed constant for the whole range of activation energy. Network models have been used to account for heat and mass transfer (diffusional effects), where the one-step and multistep could not account for these limitations. Three network models are available, the Bio-CPD (Chemical Percolation Devolatilization) model, Bio-FLASHCHAIN, and the Bio-FGDVC (Functional Group Depolymerization Vaporization Crosslinking models). These models tried to predict the product distributions of the biomass pyrolysis process

Sign in / Sign up

Export Citation Format

Share Document