Results 21 to 30 of about 5,197 (301)

Aerodynamic Optimization Design of a Supersonic Compressor Rotor with High Pressure Ratio

open access: yesInternational Journal of Aerospace Engineering, 2021
Supersonic compressors have a high wheel speed and operational capability, which facilitate a high stage pressure ratio. However, the strong shock waves in the passage of a supersonic rotor and the interference between shock waves and boundary layers can
Cui Cui, Zhenggui Zhou, Endor Liu
doaj   +1 more source

A primer in pulse EPR-based hyperfine spectroscopy for NMR spectroscopists

open access: yesJournal of Magnetic Resonance Open, 2023
The theoretical foundations of NMR and EPR are very similar. Nevertheless, the fields differ significantly in practical aspects. This primer is an attempt to bridge some of the gaps between the fields, and at the same time it highlights some applications
Nino Wili
doaj   +1 more source

NNAT is a novel mediator of oxidative stress that suppresses ER + breast cancer

open access: yesMolecular Medicine, 2023
Background Neuronatin (NNAT) was recently identified as a novel mediator of estrogen receptor-positive (ER+) breast cancer cell proliferation and migration, which correlated with decreased tumorigenic potential and prolonged patient survival.
Cody Plasterer   +4 more
doaj   +1 more source

Saul az endori boszorkánynál – kísérlet egy ószövetségi történet újraértelmezésére

open access: yesStudia Universitatis Babeş-Bolyai. Theologia Reformata Transylvanica, 2017
Saul at the Witch of Endor – Attempt at Reinterpreting an Old Testament Story. The study makes an attempt at reinterpreting the story of Saul visiting the witch of Endor.
Alpár Csaba NAGY
doaj   +1 more source

Insight into the structure of black coatings of ancient Egyptian mummies by advanced electron magnetic resonance of vanadyl complexes [PDF]

open access: yesMagnetic Resonance, 2022
Ancient Egyptian mummies from the Late Period to the Greco–Roman Period were covered by a black coating consisting of complex and heterogeneous mixtures of conifer resins, wax, fat and oil with variable amounts of bitumen. Natural bitumen always contains
C. E. Dutoit   +5 more
doaj   +1 more source

High-Field (3.4 T) ENDOR Investigation of Asphaltenes in Native Oil and Vanadyl Complexes by Asphaltene Adsorption on Alumina Surface

open access: yesGeofluids, 2019
Vanadyl porphyrin complexes in asphaltenes from heavy (Karmalinskoye) oil and in asphaltene films obtained as a result of adsorption on the surface of aluminum oxide were studied by electron paramagnetic resonance (EPR) and double electron-nuclear ...
Marat Gafurov   +6 more
doaj   +1 more source

Syntheses and Electrochemical and EPR Studies of Porphyrins Functionalized with Bulky Aromatic Amine Donors

open access: yesMolecules, 2023
A series of nickel(II) porphyrins bearing one or two bulky nitrogen donors at the meso positions were prepared by using Ullmann methodology or more classical Buchwald–Hartwig amination reactions to create the new C-N bonds.
Mary-Ambre Carvalho   +10 more
doaj   +1 more source

17O hyperfine spectroscopy in surface chemistry and catalysis

open access: yesJournal of Magnetic Resonance Open, 2023
Oxide-based materials are of key technological importance in different areas including advanced functional materials, solid state chemistry and catalysis.
Yu-Kai Liao   +3 more
doaj   +1 more source

Moderne methodische Entwicklungen in der Elektronenspinresonanz-Spektroskopie

open access: yesCHIMIA, 1986
Electron spin resonance ( ESR) is extensively used in various fields of research as a powerful toolfor the determination of molecular structures ofparamagnetic compounds.
Arthur Schweiger
doaj   +1 more source

Structure and flexibility of copper-modified DNA G-quadruplexes investigated by 19F ENDOR at 34 GHz

open access: yes, 2023
DNA G-quadruplexes (GQs) are of great interest due to their involvement in crucial biological processes such as telomerase maintenance and gene expression.
Dimitrios, Pantazis   +9 more
core   +1 more source

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