Results 21 to 30 of about 340,303 (295)
Selective drug trace detection with low-field NMR [PDF]
The Analyst, 2011 Advances with para-hydrogen induced polarization open up new fields of applications for portable low-field NMR. Here we report the possibility of tracing drugs down to the micromolar regime. We could selectively polarize nicotine quantities similar to those found in one cigarette. Also less than 1 mg of harmine, a drug used for treatment of Parkinson's
Glöggler, S. +5 more
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Use of low-field NMR for the characterization of gels and biological tissues
ADMET and DMPK, 2018 The focus of this paper is on the theoretical interpretation of Low Field Nuclear Magnetic Resonance (LF-NMR) data regarding hydrogels architecture and on the most interesting applications of LF-NMR presented by this research group at the 6th IAPC ...
Michela Abrami +5 more
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Journal of Magnetic Resonance Open, 2023 The receptivity of NMR spectroscopy is low when compared to other techniques. Historically, increasing the strength of the static magnetic field has been the major approach to increase NMR sensitivity.
Tiago Bueno Moraes +5 more
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Inline NMR via a Dedicated V-Shaped Sensor
Sensors, 2023 Process monitoring and control require dedicated and reliable measures which reflect the status of the process under investigation. Although nuclear magnetic resonance is known to be a versatile analytical technique, it is only seldomly found in process ...
Eric Schmid +4 more
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Guar gum/borax hydrogel: Rheological, low field NMR and release characterizations
eXPRESS Polymer Letters, 2013 Guar gum (GG) and Guar gum/borax (GGb) hydrogels are studied by means of rheology, Low Field Nuclear Magnetic Resonance (LF NMR) and model drug release tests. These three approaches are used to estimate the mesh size (ζ) of the polymeric network.
M. Grassi +8 more
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On-Site Measurement of Fat and Protein Contents in Milk Using Mobile NMR Technology
Molecules, 2022 Robust and easy-to-use NMR sensor technology is proposed for accurate, on-site determination of fat and protein contents in milk. The two parameters are determined using fast consecutive 1H and 35Cl low-field NMR experiments on milk samples upon the 1:1 ...
Morten K. Sørensen +4 more
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Digital filters for low‐field NMR
Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering, 2016 AbstractWe review the theory and operation of digital filters in modern nuclear magnetic resonance (NMR) spectrometers with fully digital receivers. Custom digital filters tailored for particular experimental requirements offer substantial improvements in signal‐to‐noise ratio (SNR), sensitivity, pulse sequence timing, and rejection of heteronuclear ...
Andrea Valori +2 more
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Wavelet Transform-Based Signal Denoising in Low-Field NMR
Chinese Journal of Magnetic Resonance, 2018 Low-field NMR often uses permanent magnet. The signals obtained contain high level of white Gaussian noises, and have low signal-to-noise ratio (SNR). In recent years, many denoising methods have been proposed for low-field NMR measurements.
CHANG Xiao, SU Guan-qun, NIE Sheng-dong
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Monitoring Cr(VI) photoreduction at different depths by operando low-field NMR relaxometry
Magnetic Resonance Letters, 2022 Chromium (VI) (Cr(VI)), a toxic metal ion, is widely present in industrial wastewater. To reduce the contamination of Cr(VI), many technologies for the photocatalytic reduction of Cr(VI) to Cr(III) have been developed in the past decades.
Beibei Xu +3 more
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Magnetic Resonance in Chemistry, 2019 Abstract. The subject of this thesis is NMR in low magnetic field. Traditionally NMR instruments utilize a superconducting high field magnet, but recently, compact instruments are getting more common with the use of lower magnetic fields. In this thesis, the basic theory of NMR is explained and the instrumentation and different ways of producing ...
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