Results 31 to 40 of about 339,603 (331)

Applications of Solid-State Nuclear Magnetic Resonance Spectroscopy in Methanol-to-Olefins Reaction

open access: yesChinese Journal of Magnetic Resonance, 2021
Methanol-to-olefins (MTO) is a prevalent industrial process for producing light olefins from the non-petroleum route. Molecular sieves are core catalysts for MTO owing to their unique pore structure and tunable acidity.
Shu-shu GAO   +3 more
doaj   +1 more source

Curating Scientific Workflows for Biomolecular Nuclear Magnetic Resonance Spectroscopy

open access: yesInternational Journal of Digital Curation, 2019
This paper describes our recent and ongoing efforts to enhance the curation of scientific workflows to improve reproducibility and reusability of biomolecular nuclear magnetic resonance (bioNMR) data.
Douglas Heintz, Michael R Gryk
doaj   +1 more source

Structure Confirmation of Three New Psychoactive Substances and Qualitative Identification of Unknown Substances

open access: yesFayixue Zazhi
ObjectiveTo establish the structural confirmation methods of three suspected new psychoactive substances (NPSs), and explore a more general qualitative testing method.MethodsInfrared absorption spectroscopy (IR), gas chromatography-mass spectrometry (GC ...
NIE Zong-yang   +5 more
doaj   +1 more source

Effect of fertilizers and growth stimulants on the content of coumarin and its derivatives in the vegetative mass of melilot [PDF]

open access: yesBrazilian Journal of Biology
The paper presents the results of determining the content of coumarin and its derivatives in the melilot using nuclear magnetic resonance spectroscopy, including the study of the effect of fertilizers on the quantitative content of coumarin and its ...
M. N. Suraganov   +4 more
doaj   +1 more source

Targeting TNBC: core–shell polycationic polyurea dendrimers with inherent anticancer activity

open access: yesFEBS Open Bio, EarlyView.
Core–shell polycationic PURE dendrimers were tested in TNBC‐derived tumor models. Both formulations selectively targeted TNBC and effectively reduced tumor volume. PUREG4‐OEI48 suppressed tumor growth without detectable toxicity, whereas PUREG4‐OCEI24, despite showing efficacy, induced hepatic toxicity.
Adriana Cruz   +9 more
wiley   +1 more source

Resolving single molecule structures with Nitrogen-vacancy centers in diamond. [PDF]

open access: yes, 2015
We present theoretical proposals for two-dimensional nuclear magnetic resonance spectroscopy protocols based on Nitrogen-vacancy (NV) centers in diamond that are strongly coupled to the target nuclei.
Cai, J, Kost, M, Plenio, MB
core   +1 more source

Evaluation of in vitro toxicity of common phytochemicals included in weight loss supplements using 1H NMR spectroscopy

open access: yesFEBS Open Bio, EarlyView.
We investigated the toxicity of 12 active compounds commonly found in herbal weight loss supplements (WLS) using human liver and colon cell models. Epigallocatechin‐3‐gallate was the only compound showing significant toxicity. Metabolic profiling revealed protein degradation, disrupted energy and lipid metabolism suggesting that the inclusion of EGCG ...
Emily C. Davies   +3 more
wiley   +1 more source

Practical Applications of NMR to Solve Real-World Problems

open access: yesMolecules, 2021
Nuclear magnetic resonance spectroscopy (NMR) is known to be a powerful technique for the characterization of small molecules and structural and dynamics studies of biomolecules [...]
Robert G. Brinson
doaj   +1 more source

Microstructure, vacancies and moments of nuclear magnetic resonance of hydrogenated amorphous silicon

open access: yes, 2010
Recent experiments on hydrogenated amorphous silicon using infrared absorption spectroscopy have indicated the presence of mono- and divacancy in samples for concentration of up to 14\% hydrogen. Motivated by this observation, we study the microstructure
Biswas, Parthapratim   +1 more
core   +1 more source

The non-vanishing effect of detuning errors in dynamical decoupling based quantum sensing experiments [PDF]

open access: yes, 2019
Characteristic dips appear in the coherence traces of a probe qubit when dynamical decoupling (DD) is applied in synchrony with the precession of target nuclear spins, forming the basis for nanoscale nuclear magnetic resonance (NMR). The frequency of the
Broadway, D. A.   +8 more
core   +2 more sources

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