Results 21 to 30 of about 64,002 (271)
Molecules, 2019 Four new constituents, as cis-6-oxogeran-4-enyl-10-oxy-O-β-arabinopyranosyl-4′-O-β-arabinopyranosyl-2″-octadec-9‴,12‴,15‴-trienoate (1), geran-3(10)-enyl-1-oxy-O-β-arabinopyranosyl-4′-O-β-arabinopyranosyl-2″ ...
Ill-Min Chung +7 more
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Indonesian Journal of Chemistry, 2022 Betaine derivatives are widely used in cosmetic, industrial uses, biology and other scientific fields. Pyrimidinium betaine is a special class of bioactive heterocyclics. They have interesting antioxidant and free radical scavenging activities. This work
Fatiha Malki +2 more
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Molecules, 2020 Mediterranean plants biosynthesize high amounts of polyphenols, which are important health-promoting compounds. Leaf polyphenolic composition changes according to environmental conditions.
Antonella Gori +4 more
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Electrically detected paramagnetic resonance in Ag-paint coated DPPH [PDF]
arXiv, 2021 We describe a simple experimental method to detect electron paramagnetic resonance (EPR) in polycrystalline 2,2-diphenyl-1-picrylhydrazyl (DPPH) sample, the standard g-marker for EPR spectroscopy, without using a cavity resonator or a prefabricated waveguide.
arxiv
Spatial characterization of the magnetic field profile of a probe tip used in magnetic resonance force microscopy [PDF]
Appl. Phys. Lett., 92, 214104 (2008), 2008 We have developed the experimental approach to characterize spatial distribution of the magnetic field produced by cantilever tips used in magnetic resonance force microscopy (MRFM). We performed MRFM measurements on a well characterized diphenyl-picrylhydrazyl (DPPH) film and mapped the 3D field profile produced by a Nd2Fe14B probe tip.
arxiv +1 more source
Cryogenic frequency-domain electron spin resonance spectrometer based on coplanar waveguides and field modulation [PDF]
Review of Scientific Instruments 91, 025106 (2020), 2020 We present an instrument to perform frequency-domain electron spin resonance (ESR) experiments that is based on coplanar waveguides and field modulation. A large parameter space in frequency (up to 25 GHz), magnetic field (up to 8 T), and temperature (down to 1.6 K) is accessible.
arxiv +1 more source
Curry leaf (Murraya koeneigii) extract as a natural source of antioxidants for enhancing the oxidative and thermal stability of ghee [PDF]
Journal of Veterinary and Animal Sciences, 2022 Ghee is used for making various sweets and dishes in addition to its various culinary purposes. In the course of such preparations, ghee is subjected to different degrees of heat treatment which on combining with air can undergo considerable physico ...
Mohammed Arshath +5 more
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S-band electron spin resonance spectroscopy using a short-circuited coplanar waveguide resonator [PDF]
IOPSciNotes 1 035202 (2020), 2020 In this work, we study the development of a coplanar waveguide (CPW) resonator and its use in an electron spin resonance (ESR) spectrometer. The CPW resonator is designed to operate in S-band. It has a short circuit configuration which leads to miniaturization. It is so constructed such that it has a characteristic impedance of 50 ohms.
arxiv +1 more source
Phenolic metabolites, biological activities, and isolated compounds of Terminalia muelleri extract
Pharmaceutical Biology, 2017 Context: Terminalia muelleri Benth. (Combretaceae), is rich with phenolics that have antioxidant and cytotoxic activities. No screening studies were published before on T. muelleri.
Walaa A. El-Kashak +5 more
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Phytochemicals Levels and Antioxidant Capacities of Figs Flowers Fruits
Nepal Journal of Biotechnology, 2020 Since antiquity, phenolic compounds produced by plants were known as free radical scavengers and as powerful antioxidants. Huge interest has been made by researchers to the traditional uses of medicinal plants against illnesses related to oxidative ...
Messaoudi Mohammed, Merah Maroua
doaj +1 more source