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Start Over Coverage 333-340

1. Contribution to application of ‘parametric anti-resonance‘ for autoparametric systems

Creator:
Pešek, Luděk and Tondl, Aleš
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
autoparametric systems, parametric anti-resonance, and equilibrium stabilization
Language:
English
Description:
This paper deals with the phenomenon of the parametric anti-resonance of autoparametric systems. It is shown that parametric anti-resonance (additional parametric excitation fulfilling special conditions) can be used not only to suppress self-excited or externally excited vibrations but can also be used to stabilize the equilibrium position ot the autoparametric system. and Obsahuje seznam literatury
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. On the Dirichlet and Neumann problems in multi-dimensional cone

Creator:
Vasilyev, Vladimir
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
wave factorization, pseudodifferential equation, boundary value problem, and integral equation
Language:
English
Description:
We consider an elliptic pseudodifferential equation in a multi-dimensional cone, and using the wave factorization concept for an elliptic symbol we describe a general solution of such equation in Sobolev-Slobodetskii spaces. This general solution depends on some arbitrary functions, their quantity being determined by an index of the wave factorization. For identifying these arbitrary functions one needs some additional conditions, for example, boundary conditions. Simple boundary value problems, related to Dirichlet and Neumann boundary conditions, are considered. A certain integral representation for this case is given.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

3. Red radiation and choline compounds influence growth and greening of wheat seedlings

Creator:
Kobzar, E. F., Kreslavskiï, V. D., and Muzafarov, E. N.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
acetylcholine chlorid, 2-chloroethyltrimethylammonium chloride, chlorophyll, cholines, coleoptile length, 2-ethyltrimethylammonium chloride, fluorescence induction kinetics, leaf length, and Triticum aestivum L.
Language:
Multiple languages
Description:
The effects of 2-chloroethyltrimethylammonium chloride (CCh), 2-ethyltrimethylammonium chloride (Ch), and acetylcholine chloride (ACh) at concentrations of 1 µM - 5 mM and of red radiation (R) pulse on growth, greening, and formation of the photosynthetic apparatus in etiolated wheat seedlings (Triticum aestivum L. cv. Moskovskaya-35) were examined. A short-term application of cholines and R pulse stimulated the first leaf growth and its appearance from coleoptile, and inhibited the coleoptile growth. The effects of cholines were observed during 96 h after the treatment of 4-d-old seedlings and depended on the type and the concentration of cholines. CCh, Ch, and R were also stimulators of greening and increased the photosynthetic activity, whereas ACh did not influence the process of greening. Joint effects of R with cholines on the growth and photomorphogenesis were greater than the individual ones, whereas far-red (FR) radiation decreased the influence of cholines. Thus phytochrome may modify the effects of cholines in the processes of growth and greening. and E. F. Kobzar, V. D. Kreslavskiï, E. N. Muzafarov.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public