Results 61 to 70 of about 526,143 (335)

New Insights into Nuclear Magnetic Resonance (NMR) Spectroscopy

open access: yesMolecules
NMR spectroscopy is playing an increasing role in chemistry, biology, material sciences and related disciplines [...]
Ioannis P. Gerothanassis, Teobald Kupka
doaj   +1 more source

Synthesis and characterization of modified κ-carrageenan for enhanced proton conductivity as polymer electrolyte membrane. [PDF]

open access: yesPLoS ONE, 2017
Polymer electrolyte membranes based on the natural polymer κ-carrageenan were modified and characterized for application in electrochemical devices. In general, pure κ-carrageenan membranes show a low ionic conductivity.
Joy Wei Yi Liew   +4 more
doaj   +1 more source

5-Hydroxy-3-(4-hydroxyphenyl)-8,8-dimethyl-6- (3-methylbut-2-enyl)pyrano[2,3-h]chromen-4-one [PDF]

open access: yes, 2018
Natural and semi-synthetic compounds are being studied as novel phosphodiesterase 5 (PDE5) inhibitors for the treatment of erectile dysfunction, pulmonary hypertension, and lower urinary symptoms.
Ongaro, Alberto   +2 more
core   +1 more source

Frailty Exacerbates Disability in Progressive Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background To evaluate frailty in severe progressive multiple sclerosis (PMS) and to investigate the underlying mechanisms. Methods This prospective, cross‐sectional, multicenter study enrolled a late severe PMS group requiring skilled nursing (n = 53) and an age, sex, and disease duration‐matched control PMS group (n = 53).
Taylor R. Wicks   +10 more
wiley   +1 more source

Extremely low-frequency spectroscopy in low-field nuclear magnetic resonance

open access: yes, 2009
We demonstrate a new phenomenon in nuclear magnetic resonance spectroscopy, in which nuclear spin transitions are induced by radio frequency irradiation at extremely low frequencies (of the order of a few Hz).
Carravetta, Marina   +2 more
core   +1 more source

Efficient Multifunctional Response and Polarization Switching in BiFeO3–PbZr0.58Ti0.42O3–MnFe2O4‐Based Triphasic Composites for Advanced Pulsating Applications

open access: yesAdvanced Engineering Materials, EarlyView.
Triphasic BiFeO3–PbZr0.58Ti0.42O3–MnFe2O4 composites exhibit enhanced ferroelectric and magnetic behavior, achieving 70.76% energy‐storage efficiency and improved polarization switching. The coupling between ferroelectric and magnetic phases enables multifunctional performance, making these composites promising candidates for next‐generation energy ...
Hassan Raza Khan   +7 more
wiley   +1 more source

Isolasi Dan Karakterisasi Senyawa Flavonoid Dari Kulit Akar Tumbuhan Sukun Artocarpus Altilis (Parkinson) Fosberg [PDF]

open access: yes, 2018
Isolation of flavonoid compounds from Plants Roots Leather Breadfruit (Artocarpus altilis (Parkinson) Fosberg) that grow in the village of Banjar District State Tanggamus Wonosobo regency of Lampung Province has been conducted.
Santoso, P. (Prio)
core   +2 more sources

Stabilized Intermediate Phase Via Pseudo‐Halide Anions Toward Highly Efficient and Light‐Soaking Stable Perovskite Solar Cells

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
The formate pseudo‐halide anion is strategically introduced at the buried interface to stabilize the intermediate phases formed during perovskite crystallization. The controlled crystallization enhances crystallinity and alleviates tensile strain, eliminating residual PbI2 near the buried interface.
Jongdeuk Seo   +12 more
wiley   +1 more source

Antifungal azole metabolites: Significance in pharmaceutical and biomedical analysis [PDF]

open access: yesJournal of Medical Biochemistry, 2009
Individualised therapy and factors determining such variability among patients are confusing to both physicians and their patients because of the observed therapeutic, metabolic and toxic response. The same is true about antifungal azoles. They are under
Kokil Sachin, Bhatia Manish
doaj  

Modern Technologies of Solution Nuclear Magnetic Resonance Spectroscopy for Three-dimensional Structure Determination of Proteins Open Avenues for Life Scientists

open access: yesComputational and Structural Biotechnology Journal, 2017
Nuclear magnetic resonance (NMR) spectroscopy is a powerful technique for structural studies of chemical compounds and biomolecules such as DNA and proteins. Since the NMR signal sensitively reflects the chemical environment and the dynamics of a nuclear
Toshihiko Sugiki   +2 more
doaj   +1 more source

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