168 research outputs found
COMPARATIVE STUDY OF THE AMINOACID’S TRUE DIGESTIBILITY OF DIFFERENT CLOVER (TRIFOLIUM) VARIETIES IN EXPERIMENTS WITH GANDERS
The true digestibility of amino acids of 5 groups of different Trifolium varieties and hybrids was established by using the balance method adapted for geese. Digestibility of the most important amino acids Lysine varies from 70.40 (for tetraplod red clover) to 81.78 (for medium leafy white clover varieties); for Methionine from 60.54 (for Trifolium repens f. giganteum) to 89.42 (diploid red clover); Cystine from 71.03 (for medium leafy white clover) to 87.72 (for Trifolium repens f. giganteum). Amino acids digestibility well correlates with the crude protein content, crude fiber and the total amount of amino acids in the dry matter of the forages and can be predicted with linear regression equations
COMPARATIVE STUDY OF THE AMINOACID’S TRUE DIGESTIBILITY OF DIFFERENT CLOVER (TRIFOLIUM) VARIETIES IN EXPERIMENTS WITH GANDERS
The true digestibility of amino acids of 5 groups of different Trifolium varieties and hybrids was established by using the balance method adapted for geese. Digestibility of the most important amino acids Lysine varies from 70.40 (for tetraplod red clover) to 81.78 (for medium leafy white clover varieties); for Methionine from 60.54 (for Trifolium repens f. giganteum) to 89.42 (diploid red clover); Cystine from 71.03 (for medium leafy white clover) to 87.72 (for Trifolium repens f. giganteum). Amino acids digestibility well correlates with the crude protein content, crude fiber and the total amount of amino acids in the dry matter of the forages and can be predicted with linear regression equations
Realizations of the Lie superalgebra q(2) and applications
The Lie superalgebra q(2) and its class of irreducible representations V_p of
dimension 2p (p being a positive integer) are considered. The action of the
q(2) generators on a basis of V_p is given explicitly, and from here two
realizations of q(2) are determined. The q(2) generators are realized as
differential operators in one variable x, and the basis vectors of V_p as
2-arrays of polynomials in x. Following such realizations, it is observed that
the Hamiltonian of certain physical models can be written in terms of the q(2)
generators. In particular, the models given here as an example are the
sphaleron model, the Moszkowski model and the Jaynes-Cummings model. For each
of these, it is shown how the q(2) realization of the Hamiltonian is helpful in
determining the spectrum.Comment: LaTeX file, 15 pages. (further references added, minor changes in
section 5
The return of the bursts: Thermonuclear flashes from Circinus X-1
We report the detection of 15 X-ray bursts with RXTE and Swift observations
of the peculiar X-ray binary Circinus X-1 during its May 2010 X-ray
re-brightening. These are the first X-ray bursts observed from the source after
the initial discovery by Tennant and collaborators, twenty-five years ago. By
studying their spectral evolution, we firmly identify nine of the bursts as
type I (thermonuclear) X-ray bursts. We obtain an arcsecond location of the
bursts that confirms once and for all the identification of Cir X-1 as a type I
X-ray burst source, and therefore as a low magnetic field accreting neutron
star. The first five bursts observed by RXTE are weak and show approximately
symmetric light curves, without detectable signs of cooling along the burst
decay. We discuss their possible nature. Finally, we explore a scenario to
explain why Cir X-1 shows thermonuclear bursts now but not in the past, when it
was extensively observed and accreting at a similar rate.Comment: Accepted for publication in The Astrophysical Journal Letters. Tables
1 & 2 merged. Minor changes after referee's comments. 5 pages, 4 Figure
ПРОУЧВАНЕ НА ХИМИЧНАТА НЕЕДНОРОДНОСТ НА КАДМИЙ И ОЛОВО В БИОСФЕРАТА - БИОАКУМУЛАЦИЯ НА КАДМИЙ И ОЛОВО В ОРГАНИЗМА НА МЛАДИ ПРЕЖИВНИ ЖИВОТНИ ОТ АНТРОПОГЕННИ ЕКОСИСТЕМИ С ПОВИШЕН ТЕХНОГЕНЕН КЛАРК
The technogenic Clarc of lead (Pb) and cadmium (Cd) from the upper soil layer and the forage plants in an industrially polluted region, so as the Pb and Cd input in the organism of young lambs and kid by the synthesis of secondary biological production have been investigated. For the synthesis of 1 kg secondary production in the organism of lambs, the input of Pb with the food and drinking water is 6.44 mg and 2.46 mg Cd and in the kid- organism- 21.41 mg Pb and 5.29 mg Cd. The obtained production in conditions of increased technogenic Clarc is with higher content of Pb and Cd,
according the maximal admissible levels (EC- regulation 466/2001).Изследвани са технологичният кларк на олово и кадмий в горе н слой на почва и фуражи в индустриално замърсен район, както и постъпленията на олово и кадмий в организма на млади агнета
и ярета при синтеза на вторична биологична продукция. За синтеза на 1 kg вторична продукция при агнета, постъпленията от фуража и питейната вода са 6,44 mg олово и 2,46 mg кадмий а в организма на яретата – съответно 21,41 mg олово и 5,29 mg кадмий. Получената в условията на повишен техногенен кларк продукция е с по високо съдържание на олово и кадмий спрямо пределнодопустимите концинтрации (EC regulation 466/2001)
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