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Приказ резултата 101-110 од 269
Influence of wavelength on equilibrium mode distribution and steady state distribution in W-type plastic optical fibers
(IOP Science, 2020-05-27)
Wavelength dependence of equilibrium mode distribution (EMD) and steady state distribution
(SSD) in W-type plastic optical fibers (POFs) is investigated in this paper for parametrically
varied width of the fiber’s ...
Infrared wavelength dependence of leaky mode losses and steady state distribution in W-type glass optical fibers
(Elsevier, 2018-03-13)
Infrared wavelength dependence of leaky mode losses and steady state distribution
(SSD) in W-type glass optical fibers (doubly clad fibers with three layers) is
investigated in this paper for parametrically varied ...
Phenolic and flavonoid content and antioxidant evaluation of hawthorn (Crataegus Monogyna Jacq.) fruits and leaves extracts
Considering the facts that phenolic compounds have many pharmacological effects, as well that antioxidant effect of phenolic compounds has been proven in various experimental systems, aim of this research was to determine ...
A transmission length limit for space division multiplexing in step-index silica optical fibers
(Taylor & Francis, 2019-08-28)
By solving the power flow equation, we investigate the influence of mode coupling on space division
multiplexing capability of three multimode step-index silica optical fibres with a different strengths
of mode coupling. ...
Synthesis and antioxidant activity of a new 4-aminocoumarin derivative
Synthesis, spectral characterization, and evaluation of in vitro antioxidant activity of a new coumarin derivative, 4- ((1,3,4-thiadiazol-2-yl)amino)-3-nitro-2H-chromene-2-one, are described. The synthesis of the new product ...
New natural products from the epicuticular wax of Dianthus cruentus Griseb. (Caryophyllaceae)
Detailed GC and GC-MS analysis of a diethyl ether washings of fresh flowers of Dianthus cruentus Griseb. (Caryophyllaceae) enabled the identification of 153 constituents. The major identified compounds were long-chain ...
Synthesis and complete NMR spectral assignments of new benzylamino coumarin derivative
This research involves the reaction of 4-chloro-3-nitrocoumarin and (4-methoxyphenyl)methanamine, whereby a novel coumarin derivative 4-[(4-methoxybenzyl) amino]-3-nitro-2H-chromen-2-one was obtained in good yield. The ...
Antimicrobial activity of new mixed azines of coumarins and heteroaryl aldehydes
The azine functional group is a part of numerous compounds exhibiting a range of
pharmacological activities. As part of our continuous search for new pharmacologically
active compounds, we designed, synthesized, and ...
Antioxidant activity and acute toxicity of new unsymmetrical azines containing coumarin and one more heterocyclic moieties
During our previous work, we prepared a series of mixed azines with a coumarin moiety and
different benzaldehydes, and tested their acute toxicity and antioxidant activity. Since
heterocyclic compounds possess a broad ...
Knot Energy
(Kyung Hee University , RIRCM, OCAMI & BK21PLUS, 2019-07-31)
We discuss infinitesimal bending of curves and knots in R3. A brief overview
of the results on the infinitesimal bending of curves is outlined. Change of the
Willmore energy, as well as of the total curvature, total ...