Results 11 to 20 of about 184,530 (301)

Detection of Virgin Olive Oil Adulteration Using Low Field Unilateral NMR

Sensors, 2014
The detection of adulteration in edible oils is a concern in the food industry, especially for the higher priced virgin olive oils. This article presents a low field unilateral nuclear magnetic resonance (NMR) method for the detection of the adulteration
Zheng Xu, Robert H. Morris, Martin Bencsik, Michael I. Newton   +3 more
doaj   +2 more sources

Low‐field NMR [PDF]

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 ...
Sarala, J. (Jouni)
core   +7 more sources

Functional group resolved NMR relaxation of 3-carbon adsorbates in mesoporous alumina

Magnetic Resonance Letters, 2023
NMR relaxation analysis provides a unique and non-invasive probe of fluid dynamics within porous materials, and may be applied to the interpretation of a wide variety of material and interfacial characteristics.
Neil Robinson, Carmine D’Agostino, Michael L. Johns   +2 more
doaj   +1 more source

Discriminating Extra Virgin Olive Oils from Common Edible Oils: Comparable Performance of PLS-DA Models Trained on Low-Field and High-Field 1H NMR Data

, 2023
Olive oil, the oil derived from the olive tree (Olea europaea L.), is used in cooking, cosmetics, and soap production. Due to its high value, some producers adulterate olive oil with cheaper edible oils or mislabel cheaper oils to increase profitability.
James, Harynuk, A. Paulina, de la Mata, Ryland, Giebelhaus, Seo Lin, Nam, Paul, Shipley, Thomas, Head   +5 more
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Binding hotspots of BAZ2B bromodomain:histone interaction revealed by solution NMR driven docking [PDF]

, 2014
Bromodomains are epigenetic reader domains, which have come under increasing scrutiny both from academic and pharmaceutical research groups. Effective targeting of the BAZ2B bromodomain by small molecule inhibitors has been recently reported, but no ...
Ferguson, Fleur M., Alexandre M. J. J. Bonvin (18079), Alexandre M. J. J. Bonvin, João P. G. L. M. Rodrigues (1312506), Wienk, Hans, Fleur M. Ferguson (1304613), Rolf Boelens (18078), Alessio Ciulli, Boelens, Rolf, NMR Spectroscopy, Chris Abell, Fleur M. Ferguson, Garcia Lopes Maia Rodrigues, João, Rodrigues, João P. G. L. M., David M. Dias, Bonvin, Alexandre M. J. J., Sub NMR Spectroscopy, Dias, David M., João P. G. L. M. Rodrigues, David M. Dias (1340694), Rolf Boelens, Abell, Chris, Hans Wienk (684663), Ciulli, Alessio, Hans Wienk, Chris Abell (197099), Alessio Ciulli (762789)   +26 more
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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., Emondts, M., Colell, J., Mueller, R., Blümich, B., Appelt, S.   +5 more
openaire   +4 more sources

Experimental study on the mobility of Junggar Basin's Jimsar shale oil by CO2 huff and puff under different temperatures and pressures

Shiyou shiyan dizhi, 2022
Micro- and nano-scale pore-throat fissure systems were mainly developed in the Jimsar shale oil reservoir of the Junggar Basin with the oil of viscous and difficult to be produced.CO2 huff-and-puff is an important technology to enhance the oil recovery ...
Ziqiang WANG, Hongkui GE, Huiying GUO, Hao ZHOU, Yuankai ZHANG   +4 more
doaj   +1 more source

Determination of herb authenticity by low-field NMR

Food Chemistry, 2013
The safe use of herbal medicines requires prior authentication of the raw materials used to make them. This is an important step, since the ingestion of herbal preparations or extracts can cause serious health problems. Among the different analytical techniques, nuclear magnetic resonance (NMR) spectroscopy has the advantage of being non-invasive and ...
Preto, M.S.M., Tavares, M.I.B., Sebastião, P.J.O., Azeredo, R.B.V.   +3 more
openaire   +2 more sources

Protein folding on the ribosome studied using NMR spectroscopy [PDF]

, 2013
NMR spectroscopy is a powerful tool for the investigation of protein folding and misfolding, providing a characterization of molecular structure, dynamics and exchange processes, across a very wide range of timescales and with near atomic resolution.
Christodoulou, J, Christodoulou, John, Launay, H, Launay, Hélène, Cabrita, Lisa D., Cabrita, L.D., Launay, H., Waudby, CA, Cabrita, LD, Waudby, Christopher A.   +9 more
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Low‐field NMR for quality control on oils

Magnetic Resonance in Chemistry, 2019
AbstractOil is a prominent, but multifaceted material class with a wide variety of applications. Technical oils, crude oils as well as edibles are main subclasses. In this review, the question is addressed how low‐field NMR can contribute in oil characterization as an analytical tool, mainly with respect to quality control.
Thomas Rudszuck, Eva Förster, Hermann Nirschl, Gisela Guthausen   +3 more
openaire   +4 more sources