Results 101 to 110 of about 864,738 (314)

Nuclear magnetic resonance relaxometry to characterise the decomposition degree of peat soils

Geoderma
An adequate response to the ecological challenges associated with the traditional peatland management and corresponding site-specific measures require spatial information on soil properties and functions, most of which are related to the degree of peat ...
Stephan Costabel, Claus Florian Stange
doaj   +1 more source

Data on tensile tests and NMR measurements of poly(vinilidene fluoride) before and after stress relaxation

Data in Brief, 2018
Poly(vinilidene fluoride) was characterized before and after stress relaxation by tensile tests and time-domain nuclear magnetic resonance (TD-NMR). Tensile tests were performed to provide mechanical properties, focused on the data of elastic modulus for
Maria Marjorie Contreras, Christine Rabello Nascimento, Roberto Pinto Cucinelli Neto, Marysilvia F. Costa, Celio A. Costa   +4 more
doaj   +1 more source

Hydrophilic Polymers Enable Gastrointestinal Transit Monitoring by Fluorine‐19 Magnetic Resonance Imaging

Advanced Healthcare Materials, EarlyView.
Hydrophilic fluorinated copolymers dissolve in chyme and give a strong, single 19F signal, unlike phase‐separating perfluorocarbons. Combined 1H‐19F MRI tracks their whole‐gut transit non‐invasively and without ionizing radiation. In rats, the tracers move through the gastrointestinal tract, resist resorption, and are well tolerated, a proof‐of‐concept
Ondřej Groborz, Vít Herynek, Mária Hovořáková, Zuzana Pavlíková, Linda Dalecká, Klára Steklíková, Petr Matouš, Petr Páral, Margarita Tkachenko, Filip Koucký, Fatma Nalan Cetin, Ludmila Maffei Svobodová, Jiří Beneš, Kristýna Kolouchová   +13 more
wiley   +1 more source

A Deep Learning-based Method for LF-NMR Relaxation Time Spectrum Inversion

Chinese Journal of Magnetic Resonance
Low-field nuclear magnetic resonance (LF-NMR) relaxation time spectrum analysis has been widely applied in petroleum engineering and geological exploration.
LIU Kewen, JIANG Yukang, CHEN Fang, CHEN Junfei, LU Yuan, CHEN Li, LIU Chaoyang   +6 more
doaj   +1 more source

Chemical Strategies for Multistimuli Responsive Dynamic Covalent Materials in Regenerative Medicine

Advanced Healthcare Materials, EarlyView.
Multistimuli responsive dynamic covalent materials integrate reversible chemistry with the complex chemical, mechanical, and biochemical cues of regenerative environments. This review highlights chemical strategies based on orthogonal dynamic bonds, multicomponent networks, and hierarchical architectures to regulate mechanics, degradation, and ...
Saurabh Joshi, Matthew B. Baker, Dominik Schauenburg   +2 more
wiley   +1 more source

Structural relaxation in silicate melts and non-Newtonian melt rheology in geologic processes [PDF]

, 1989
The timescale of structural relaxation in a silicate melt defines the transition from liquid (relaxed) to glassy (unrelaxed) behavior. Structural relaxation in silicate melts can be described by a relaxation time, , consistent with the observation that ...
Dingwell, Donald B., Webb, Sharon L.
core   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Hydration dynamics of the collagen triple helix by NMR [PDF]

, 2000
The hydration of the collagen-like Ac-(Gly-Pro-Hyp)(6)-NH2 triple-helical peptide in solution was investigated using an integrated set of high-resolution NMR hydration experiments, including different recently developed exchange-network editing methods ...
Kaptein, R, NMR-spectroscopie, Bonvin, AMJJ, Sub NMR Spectroscopy, Boelens, R, Goodman, M, Melacini, G   +6 more
core   +1 more source

Assessment of molecular dynamics in natural Shilajit using low-field NMR relaxometry for geographical traceability

Reviews in Analytical Chemistry
Shilajit (Mumijo) is a phytomineral exudate known for its therapeutic potential, traditionally used in Ayurvedic medicine. Its molecular composition and consequently its therapeutic properties are influenced by geographical origin.
Kamgar Elham, Baranowska Hanna Maria, Kaykhaii Massoud, Nowicki Marcin, Kowalczewski Przemysław Łukasz, Zembrzuska Joanna   +5 more
doaj   +1 more source

Drawing Single NMR Spins and Understanding Relaxation

Natural Product Communications, 2019
How should we draw vectors to represent individual nuclear spins? Vectors in 3D space are merely a way of understanding the mathematics of quantum mechanics, which provides the “true” description of a single spin-½ nucleus.
Mike P. Williamson
doaj   +1 more source