Results 51 to 60 of about 340,629 (297)

Benchtop NMR Coupled with Chemometrics: A Workflow for Unveiling Hidden Drug Ingredients in Honey-Based Supplements

Molecules
Recently, benchtop nuclear magnetic resonance (NMR) spectrometers utilizing permanent magnets have emerged as versatile tools with applications across various fields, including food and pharmaceuticals.
Camille Pujol, Saïda Danoun, Ghislaine Biasini, Emmanuel Retailleau, Jessica Masson, Stéphane Balayssac, Véronique Gilard   +6 more
doaj   +1 more source

Spin gap and Luttinger liquid description of the NMR relaxation in carbon nanotubes

, 2007
Recent NMR experiments by Singer et al. [Singer et al. Phys. Rev. Lett. 95, 236403 (2005).] showed a deviation from Fermi-liquid behavior in carbon nanotubes with an energy gap evident at low temperatures.
A. O. Gogolin, Balázs Dóra, F. H. L. Essler, Ferenc Simon, G. Grüner, Hans Kuzmany, Miklós Gulácsi, T. Giamarchi   +7 more
core   +1 more source

Turbulent Vortex Flow Responses at the AB Interface in Rotating Superfluid 3He-B [PDF]

, 2011
In a rotating two-phase sample of 3He-B and magnetic-field stabilized 3He-A the large difference in mutual friction dissipation at 0.20 Tc gives rise to unusual vortex flow responses.
H. P. Greenspan, J. J. Hosio, M. Krusius, P. J. Heikkinen, P. M. Walmsley, R. Hänninen, V. B. Eltsov   +6 more
core   +2 more sources

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

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Comparison of different solvent suppression techniques for polymer characterization with a 90 MHz benchtop spectrometer

Journal of Magnetic Resonance Open
In NMR spectroscopy, samples are usually dissolved in deuterated solvents to avoid overlap of small analyte signals with large, protonated solvent signals.
Johanna Tratz, Markus Matz, Manfred Wilhelm   +2 more
doaj   +1 more source

Monitoring Electrochemical Reactions in Situ with Low Field NMR: A Mini-Review

Applied Sciences, 2019
The number of applications of time domain NMR using low-field spectrometers in research and development has been steadily increasing in recent years with applications ranging from quality control of industrial products to the study of physical and ...
Bruna Ferreira Gomes, Carlos Manuel Silva Lobo, Luiz Alberto Colnago   +2 more
doaj   +1 more source

Magnetic structure of azurite above the 1/3 magnetization plateau

, 2011
The transition from the 1/3 magnetization plateau towards the saturation magnetization in azurite has been studied by low-temperature, high-magnetic-field, high-frequency proton nuclear magnetic resonance (NMR).
Aimo, F., Berthier, C., Horvatic, M., Klanjsek, M., Krämer, S.   +4 more
core   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Analysis of Early Performance of Cement Paste by Low Field NMR

Applied Sciences, 2019
The change of the evaporable water content in the early hydration process of cement paste with different water-to-cement ratios was monitored by low field nuclear magnetic resonance (LF-NMR) relaxometry.
Dan Jin, Zejun Lang, Wu Yao
doaj   +1 more source