Quantum and Classical Integrable Systems

The key concept discussed in these lectures is the relation between the Hamiltonians of a quantum integrable system and the Casimir elements in the underlying hidden symmetry algebra. (In typical applications the latter is either the universal enveloping algebra of an affine Lie algebra, or its q-deformation.) A similar relation also holds in the classical case. We discuss different guises of this very important relation and its implication for the description of the spectrum and the eigenfunctions of the quantum system. Parallels between the classical and the quantum cases are thoroughly discussed.Comment: 59 pages, LaTeX2.09 with AMS symbols. Lectures at the CIMPA Winter School on Nonlinear Systems, Pondicherry, January 199

ANALYSIS THE GENERAL CHARACTERISTICS AND GRAIN QUALITY OF SEVERAL VARIETIES OF IRAQ WHEAT (TRITICUM AESTIVUM L.)

According to the totality of the quantitative characteristics of the elements of productivity, all 12 Iraqi varieties of soft wheat when reproduced in the non-Black Earth Region of the Russian Federation are classified as productive varieties. However, the results of a comparative study of 12 varieties of soft wheat do not provide a basis for isolating varieties on the basis of the characteristics of the elements of productivity due to insignificant differences in these characteristics, as well as member. A significant variety of Iraqi varieties has been identified in terms of gluten content and quality. 9 varieties of soft wheat from 12 are distinguished by a high content of gluten Ranging from (28,6 to 52,0%). Among them, three varieties combine this property with high quality gluten, (Alrashid, Tamuz-3 and Sabirbeg). There are also three introduced selection varieties with a low gluten content of Ibaa-99 (22,1%), Tahadi (25,5%) and Ibaa-95 (25,6%) which is obviously related to the national specifics of consumer requirements to the grain

Agar as a medium for removing soil from earthworm guts.

Earthworms were kept on a water-agar gel for 96 h at 20°C, after that time all soil had been voided from their guts. Earthworms treated in this way may be used for soil-free chemical analysis, as required in biomonitoring programmes for soil contamination. (C) 2000 Elsevier Science Ltd

Comparative Toxicity Assessment of Soil Fungi Isolated from Black Sea Coasts

© 2020, Springer Science+Business Media, LLC, part of Springer Nature. The research was aimed to compare the soil fungal communities of the Black Sea north and south coasts and to evaluate the toxicity of fungi isolated in these areas. General toxicity of the fungi identified was evaluated by P. caudatum bioassay and skin test bioassay on rabbits. There is no significant difference in the total fungal counts in soil samples taken in the Black Sea north and south coasts, being 3.18–3.50 CFU*103 g−1 dry soil. Cultures of the fungi genera such as Aspergillus, Penicillium, Fusarium, Mucor, Rhodotorula, and Trichoderma were isolated using methods of mycology. Soil fungal isolated from north coast samples were found to be nontoxic (79.2–81.2% of paramecia survived) in P. caudatum biotesting, while those isolated from south coast ones being slightly toxic (65.6–69.4%) (p < 0.05). Some fungal isolates from north coast samples also had no toxic effect on the Paramecia. Three fungal isolates from the south coast were slightly toxic, with the survival rate of test organisms being 55.33–62.67%. Only one isolate of the species A. flavus, A. fumigatus, and F. sporotrichioides each was found to have a toxic effect in the Paramecia. The toxicity of these fungal isolates was confirmed with a rabbit bioassay. The results obtained give evidence to grade 1 toxicity in 24 h after applying the suspension prepared from the mycelial mat of A. flavus and F. sporotrichioides isolated from the south coast. The rabbit skin test bioassay demonstrated also the A. fumigatus isolate from the south coast having grade 2 toxicity