The effects of acidification on fresh water life

Signs that a water body is becoming acidified are clearer water and declining fish populations. The clearness is primarily due to that the humic substances that normally colour the water, precipitate and settle on the lake floor. The main reason for fish stocks declining, both overall and in number of species, is failure to reproduce in acidic water. Many other biological changes occur, too, when the water becomes acidified. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3494

Development of laboratory information management system

Results of the actual direction of work of Scientific Research Institute of HV on development of the program complex LIS/LIMS «Chemist - analysts» for automatization of activity of analytical laboratories are presented. Functions of the complex and methodological principles of its development are considered, comparison with foreign analogues is carried out. The model of the industrial analytical control with use of concepts of a life cycle of a laboratory, technique and test is described

FUNCTIONAL SPECIALIZATION OF DUPLICATED FLAVONOID BIOSYNTHESIS GENES IN WHEAT

Gene duplication followed by subfunctionalization and neofunctionalization is of a great evolutionary importance. In plant genomes, duplicated genes may result from either polyploidization (homoeologous genes) or segmental chromosome duplications (paralogous genes). In allohexaploid wheat Triticum aestivum L. (2n=6x=42, genome BBAADD), both homoeologous and paralogous copies were found for the regulatory gene Myc encoding MYC-like transcriptional factor in the biosynthesis of flavonoid pigments, anthocyanins, and for the structural gene F3h encoding one of the key enzymes of flavonoid biosynthesis, flavanone 3-hydroxylase. From the 5 copies (3 homoeologous and 2 paralogous) of the Myc gene found in T. aestivum, only one plays a regulatory role in anthocyanin biosynthesis, interacting complementary with another transcriptional factor (MYB-like) to confer purple pigmentation of grain pericarp in wheat. The role and functionality of the other 4 copies of the Myc gene remain unknown. From the 4 functional copies of the F3h gene in T. aestivum, three homoeologues have similar function. They are expressed in wheat organs colored with anthocyanins or in the endosperm, participating there in biosynthesis of uncolored flavonoid substances. The fourth copy (the B-genomic paralogue) is transcribed neither in wheat organs colored with anthocyanins nor in seeds, however, it’s expression has been noticed in roots of aluminium-stressed plants, where the three homoeologous copies are not active. Functional diversification of the duplicated flavonoid biosynthesis genes in wheat may be a reason for maintenance of the duplicated copies and preventing them from pseudogenization.The study was supported by RFBR (11-04-92707). We also thank Ms. Galina Generalova for technical assistance

Ecological education: problems and solutions

Among the main tasks we should point out the creation of systematic ecological education and public informing about the environment, the influence on it from the side of different subjects and methods of their improvement in. Nowadays ecology is a discipline that unites humanitarian and natural sciences and helps to form the general model of relations between nature, society and from another side it defines the sense and development perspectives for all humanity. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/831

СТИЛІ НЕПРАВДИВОГО МОВЛЕННЯ (The styles of the untruthful speech)

У статті висвітлюються мовностилістичні особливості організації неправдивого висловлення. Наводиться типологія стилів неправдивого мовлення. (The article deals with the linguistic and stylistic peculiarities of false utterances. Several linguistic styles of dishonest speech are distinguished.

Theory of magnetoelastic resonance in a mono-axial chiral helimagnet

We study magnetoelastic resonance phenomena in a mono-axial chiral helimagnet belonging to hexagonal crystal class. By computing the spectrum of coupled elastic wave and spin wave, it is demonstrated how hybridization occurs depending on their chirality. Specific features of the magnetoelastic resonance are discussed for the conical phase and the soliton lattice phase stabilized in the mono-axial chiral helimagnet. The former phase exhibits appreciable non-reciprocity of the spectrum, the latter is characterized by a multi-resonance behavior. We propose that the non-reciprocal spin wave around the forced-ferromagnetic state has potential capability to convert the linearly polarized elastic wave to circularly polarized one with the chirality opposite to the spin wave chirality.Comment: 12 pages, 5 figures, Accepted in Phys. Rev.