636 research outputs found
The functions of examples in the case category description : in the Spanish grammars of the Golden age
The article analyzes examples as an integral part of a grammar. The functions of examples in the case category description in the Spanish grammars of the Golden Age are under consideration. It is pointed out that the functions of the examples in the case category description differed greatly from those in the description of other grammatical categoriesyesBelgorod State Universit
Plasmon Resonance in а-С : Н Films Modified with Platinum Nanoclusters
Optical density spectra of amorphous diamond-like films of hydrogenated carbon modified with plati-num impurity (a-C : H) have been investigated. a-C : H films were prepared by the method of ion
plasma magnetron co-sputtering of graphite and platinum in argon-hydrogen atmosphere. Platinum con-tent in the films was varied from 0 to 9 at. %. In the optical spectra of a-C : H films with different Pt
content the peaks of resonance absorption in the range from 496 to 501 nm were found, whilst in the spec-trum of a-C : H films the absorption peak is absent. The appearance of these absorption peaks in a-C : H films is explained by resonance plasmon vibrations of free electrons in platinum nanocl usters.
The average diameter of the Pt nanoclusters was estimated using electromagnetic theory of Mie, and it is
~ 5 nm.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3638
Synanthropic flora of Kuzbass
The article presents the materials of studies of the adventive flora of the Kemerovo region. For the territory of the Kemerovo region, we identified 244 alien species belonging to 162 genera and 50 families. As a result of the increasing process of invasion of new species into the territory of the region, the need for constant monitoring of alien species for the degree of their naturalization, especially in natural cenoses, is urgent. The problem of synanthropic plant species is becoming increasingly important not only for economically developed territories, but also for the relatively preserved mountain regions of Kuzbass. As a result of the studies, it was found that the synanthropic fraction of the Kuzbass flora, consisting of adventive and apophyte species, accounts for about 18% of the total composition of the flora of vascular plants in the Kemerovo region (60 apophyte species, 244 – advent ones). The revealed heterogeneity in the chorological, ecological and biological terms of the species of the adventive fraction makes it possible to find suitable conditions in various types of ecotopes on the territory of the Kemerovo region. This type of work can serve as a basis for developing a strategy for the preservation of natural phytosystems of Kuzbas
ANALYSIS METHODS COMPLEX DIAGNOSTICS OF ENTERPRISE FINANCIAL CONDITION
The article provides an overview of domestic and foreign methods of complex diagnostics of the financial condition of the company. All of the techniques aimed at assessing the risk of a crisis of the financial situation or bankruptcy. The authors identified the advantages and disadvantages of each of the models considered
The case category term system in the Spanish grammars of the Golden age
The research of linguistic terminology formation peculiarities within the framework of different linguistic traditions gives a rich material for the surveyyesBelgorod State Universit
ANALYSIS METHODS COMPLEX DIAGNOSTICS OF ENTERPRISE FINANCIAL CONDITION
The article provides an overview of domestic and foreign methods of complex diagnostics of the financial condition of the company. All of the techniques aimed at assessing the risk of a crisis of the financial situation or bankruptcy. The authors identified the advantages and disadvantages of each of the models considered
Regulation of flavonoid biosynthesis in representatives of the tribe Phaseoleae DC.
Flavonoids play a crucial role in plant metabolism. Many of them have antioxidant activity, and they are also pigments that render a variety of colors to plant tissues. Foods rich in flavonoid compounds are considered as functional components of a healthy diet. Currently, there is an increased interest in studying genetic mechanisms underlying the coloration of plants. Flavonoid biosynthesis pathways are controlled by two groups of genes. Structural genes encode enzymes, while regulatory genes are responsible for transcription factors that activate the expression of structural genes. Transcription factors that belong to R2R3-Myb, bHLH-Myc and WDR families form the ternary MBW complex, which is involved in regulating the expression of structural genes of flavonoid biosynthesis. The mechanisms of regulation of the anthocyanins and proanthocyanidin biosynthesis by the MBW complex are described in detail for the model plant Arabidopsis thaliana L. This review summarizes data on the regulation of phenolic pigment biosynthesis and the features of phenolic pigment accumulation in plant tissues in the main representatives of the Phaseoleae tribe: soybean Glycine max (L.) Merr., common bean Phaseolus vulgaris L., adzuki bean Vigna angularis (Willd.) Ohwi & Ohashi, and cowpea V. unguiculata (L.) Walp. The species discussed in this review are the most important food legumes in many countries of the world and they comprise the staple food in diets of millions of people. Identification and characterization of the genes controlling the flavonoid biosynthesis pathways are necessary for successful breeding of modern varieties with an increased dietary value. Identification of the flavonoid accumulation patterns is essential for solving the problem of broadening the diversity of plant products
Magnetic phase diagram and possible Kitaev-like behavior of honeycomb-lattice antimonate Na3Co2SbO6
Recent theoretical studies have suggested that Kitaev physics and such
effects as formation of a mysterious spin-liquid state can be expected not only
in RuCl3 and iridates, but also in conventional transition metal
compounds. Using DC and AC magnetometry, thermodynamic and Na nuclear
magnetic resonance measurements (NMR) we studied such a candidate material
Na3Co2SbO6 . A full phase diagram of Na3Co2SbO6 in a wide range of magnetic
fields and temperatures is presented. The results demonstrate transformation of
the magnetic structure realized at low-temperature and suppression of the AFM
order under the external field, the gradual development of the saturation
phase, as well as evidence of gapped spin-liquid-like behavior in certain parts
of the phase diagram
Geospatial analysis of flooding from hurricane Florence in the coastal South Carolina using Google Earth Engine
Flooding impacts from hurricanes and other natural hazards are an important concern in many areas of the world. The objectives of this study were to: (1) develop a framework to identify flood-affected areas after storm impact; (2) map the flooded areas caused by the hurricane Florence; and (3) assess the major effect of the hurricane on the land cover and agricultural crops in the coastal South Carolina during the flood period. The coastal South Carolina regions are recognized as the most important agricultural area in the state. The developed framework identified and mapped the affected areas during the hurricane season. Based on the results the hurricane-flooded areas were approximately 681 km2, and the major affected counties in both analysis flood frequency and flooded areas are Charleston, Georgetown, Berkeley, Florence, Marlboro, Marion, Horry, Chesterfield, Sumter, Clarendon, and Darlington. These results not only indicate flood risk on the land cover but also demonstrate the advantage of utilizing Google Earth Engine and the public archive database in its platform to track and monitor the natural hazards over time
- …