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Infinitesimal bending of knots and energy change
(World Scientific Publishing Co. Pte. Ltd., 2019-09-12)
We discuss the 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 Möbius energy under ...
Total Normalcy of Knots
(Faculty of Sciences and Mathematics, University of Niš, 2019-01-01)
In this paper we consider first order infinitesimal bending of curves and knots. The total
normalcy of the knot during the first order infinitesimal bending is discussed and expressions for the first variation of the total ...
A new longipinane ketone from Achillea abrotanoides (Vis.) Vis.: chemical transformation of the essential oil enables the identification of a minor constituent
(Wiley-VHCA AG, Zurich, Switzerland, 2019-12-10)
Introduction: Minor plant constituents are difficult to identify due to the challenging
isolation and acquiring of reliable spectral data. Essential oils abound in such minor
constituents that might be of high importance ...
Diethyl-ether flower washings of Dianthus cruentus Griseb. (Caryophyllaceae): Derivatization reactions leading to the identification of new wax constituents
(Wiley-VHCA AG, Zurich, Switzerland, 2019-05-07)
Some carnation species (Dianthus spp., Caryophyllaceae) exhibit a strong resistance to drought stress that is connected with the increased surface wax formation. Wax composition is unknown for the majority of Dianthus spp. ...
Optimization and validation of the kinetic spectrophotometric method for quantitative determination of the pesticide atrazine and its application in infant formulae and cereal-based baby food
(Wiley-VHCA AG, Zurich, Switzerland, 2019-05-11)
BACKGROUND: Pesticides are potentially toxic to humans and can produce both acute and chronic health effects, depending on the quantity and the ways in which a person is exposed. Exposure to pesticides can cause serious ...
Wavelength dependence of equilibrium mode distribution and steady state distribution in W-type plastic-clad silica fibers
(Elsevier, 2019-11-27)
Wavelength dependence of equilibrium mode distribution (EMD) and steady state distribution (SSD) in W-type
plastic-clad silica fibers (PCSFs) is investigated in this paper for parametrically varied width of the fiber’s ...
Controlling the bandwidth of W-type plastic-clad silica optical fibers
(IOP Publishing, 2019-06-27)
A new design of a multimode plastic-clad silica optical fiber that takes the characteristic
W-shaped index profile is proposed. The bandwidth and steady-state loss are determined
for such a W-type plastic-clad silica ...
An Overview of Novel Methods for ASEP Performance Evaluation Based on Q-Function Approximation
(27th Telecommunications forum TELFOR 2019, 2019-11-27)
The closed-form expression for Q-function does not exist so it is necessary to develop its approximation in order to overcome the difficulties that might appear in diverse
research areas. In this paper the authors are ...
Power Flow in Graded-Index Plastic Optical Fibers
(IEEE, 2019-07-03)
A method is proposed for predicting the evolution of the power distribution along graded-index plastic optical fibers. This method is verified against our recently reported measurements. The strong influence of mode coupling ...
E-Learning in Higher Education – An Overview of Strategic Planning
(2019-10-03)
Implementation of E-Learning is one of the ways of applying modern information technologies to achieve a high quality of higher education. The transition of higher
education institutions towards E-Learning should be an ...