NMR quantification of trace components in complex matrices by band-selective excitation with adiabatic pulses

2009 ◽  
Vol 47 (10) ◽  
pp. 868-872 ◽  
Author(s):  
Federico Rastrelli ◽  
Elisabetta Schievano ◽  
Alessandro Bagno ◽  
Stefano Mammi
Keyword(s):  
Selective Excitation ◽  
Complex Matrices ◽  
Adiabatic Pulses ◽  
Trace Components

Selective Excitation with Asymmetric Adiabatic Pulses for NMR Spectroscopy

ChemPhysChem ◽  
2014 ◽  
Vol 16 (3) ◽  
pp. 621-627
Author(s):  
Huawei Liu ◽  
Shanmin Zhang
Keyword(s):  
Nmr Spectroscopy ◽  
Selective Excitation ◽  
Adiabatic Pulses

THE ROLE OF POLYETHYLENIMINE IN ENHANCING PERFORMANCE OF GLUTAMATE BIOSENSORS

2018 ◽  
Vol 8 (3) ◽  
pp. 36-41
Author(s):  
Diep Do Thi Hong ◽  
Duong Le Phuoc ◽  
Hoai Nguyen Thi ◽  
Serra Pier Andrea ◽  
Rocchitta Gaia
Keyword(s):  
First Generation ◽  
Good Reproducibility ◽  
Complex Matrices ◽  
Long Term Stability ◽  
In Vitro Characterization ◽  
Glutamate Oxidase

Background: The first biosensor was constructed more than fifty years ago. It was composed of the biorecognition element and transducer. The first-generation enzyme biosensors play important role in monitoring neurotransmitter and determine small quantities of substances in complex matrices of the samples Glutamate is important biochemicals involved in energetic metabolism and neurotransmission. Therefore, biosensors requires the development a new approach exhibiting high sensibility, good reproducibility and longterm stability. The first-generation enzyme biosensors play important role in monitoring neurotransmitter and determine small quantities of substances in complex matrices of the samples. The aims of this work: To find out which concentration of polyethylenimine (PEI) exhibiting the most high sensibility, good reproducibility and long-term stability. Methods: We designed and developed glutamate biosensor using different concentration of PEI ranging from 0% to 5% at Day 1 and Day 8. Results: After Glutamate biosensors in-vitro characterization, several PEI concentrations, ranging from 0.5% to 1% seem to be the best in terms of VMAX, the KM; while PEI content ranging from 0.5% to 1% resulted stable, PEI 1% displayed an excellent stability. Conclusions: In the result, PEI 1% perfomed high sensibility, good stability and blocking interference. Furthermore, we expect to develop and characterize an implantable biosensor capable of detecting glutamate, glucose in vivo. Key words: Glutamate biosensors, PEi (Polyethylenimine) enhances glutamate oxidase, glutamate oxidase biosensors

Optimization of adiabatic pulses for pulsed arterial spin labeling at 7 tesla: Comparison with pseudo‐continuous arterial spin labeling

2021 ◽  
Vol 85 (6) ◽  
pp. 3227-3240
Author(s):  
Kai Wang ◽  
Xingfeng Shao ◽  
Lirong Yan ◽  
Samantha J. Ma ◽  
Jin Jin ◽  
...  
Keyword(s):  
Arterial Spin Labeling ◽  
Spin Labeling ◽  
7 Tesla ◽  
Adiabatic Pulses ◽  
Continuous Arterial Spin Labeling

scholarly journals On the Perron–Frobenius theory for complex matrices

2012 ◽  
Vol 437 (4) ◽  
pp. 1071-1088 ◽  
Author(s):  
Dimitrios Noutsos ◽  
Richard S. Varga
Keyword(s):  
Complex Matrices

scholarly journals Digital PCR as an effective tool for GMO quantification in complex matrices

2019 ◽  
Vol 294 ◽  
pp. 73-78 ◽  
Author(s):  
Alexandra Bogožalec Košir ◽  
Tina Demšar ◽  
Dejan Štebih ◽  
Jana Žel ◽  
Mojca Milavec
Keyword(s):  
Digital Pcr ◽  
Complex Matrices ◽  
Gmo Quantification
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