scholarly journals New finds of anthropochoric species of terrestrial mollusks in western Ukraine

2020 ◽  
pp. 213-214
Author(s):  
Nina Gural-Sverlova ◽  
Sofia Savchuk
Keyword(s):  
Cepaea Nemoralis ◽  
Western Ukraine ◽  
Made In ◽  
Terrestrial Mollusks

New finds of 7 anthropochoric species (Oxychilus draparnaudi, O. translucidus, Krynickillus melanocephalus, Monacha cartusiana, M. fruticola, Cepaea nemoralis, C. hortensis) made in Lviv and Ivano-Frankivsk regions in 2019 are listed. The first findings of C. nemoralis in Ternopil region (2017) and C. hortensis in Khmelnytsky region (2016) are also described.

scholarly journals Ruff , Philomachus pugnax (Aves, Charadriiformes), Migration in Western Ukraine

2014 ◽  
Vol 48 (1) ◽  
pp. 75-82
Author(s):  
Iu. Strus
Keyword(s):  
Wing Length ◽  
Base Materials ◽  
Flight Range ◽  
Significant Difference ◽  
Philomachus Pugnax ◽  
Migration Dynamics ◽  
Western Ukraine ◽  
Juvenile Males ◽  
Second Wave ◽  
Made In

Abstract In the paper we discuss migration dynamics, biometry and stopover ecology of Ruff (Philomachus pugnax Linnaeus, 1758) in the Cholgini ornithological reserve. Also the observations, made in other regions of the western Ukraine, were used in the analysis. Th e base materials for this paper were collected during 1995-2012 by West-Ukrainian ornithological station, by conducting regular bird counts, ringing and taking measurements of migrating waders using standard methods. During Ruff spring migration two major waves of passage occured: the first one is from the end of March till early April and the second - from the end of April to the end of May. Th e average number of a flock was equal 12 individuals. In the autumn passage dynamics of two waves can also be seen. Th e fist wave is observed in July with the peak in the middle of month. Second wave occurs in August and in fist two decades of September, with maximum bird numbers in the end of August. Th e passage dynamic of Ruff in the Cholgini reserve is very similar to the dynamic in other continental staging sites. Significant difference was found in the wing length between the adult and juvenile Ruff s. Th e potential flight range of juvenile females was 3236 km, juvenile males - 2380 km, adult females - 2740 km.

scholarly journals DYNAMICS OF INFLUENCE OF FOREIGN INVESTMENT FLOWS ON REGIONAL PRODUCTION

2020 ◽  
Author(s):  
Liubov Vodianka ◽  
Vira Kozak ◽  
Jaroslav Melnyk
Keyword(s):  
Foreign Direct Investment ◽  
Direct Investment ◽  
Time Lag ◽  
Distributed Lag ◽  
Distributed Lag Models ◽  
Comparison Time ◽  
Western Ukraine ◽  
Lag Period ◽  
Regional Product ◽  
Made In

Peculiarities of regional processes of foreign direct investment impact on the gross domestic product of Western Ukraine and Chernivtsi region, taking into account a time lag, are reviewed in this article. Considering the fact that investment processes are enough complicated phenomenon to understand in the course of which different kinds of changes occur, the relevance and importance of establishing a pattern of their behavior is increasing. Economical and mathematical tools, in particular Almon distributed lag models which allow to estimate the discrete lag influence of determinants can be used to achieve this. In the course of the study, the Almon distributed lag models were constructed separately for the comparison, time lag interval boundaries were set, the main features of the discrete time lag distribution during the lag period were determined, and the economic and mathematical models of the distributed lag for the effects of foreign direct investment on the gross regional product of Chernivtsi region Western Ukraine were built. On the basis of the obtained results, conclusions about economic multiplier processes of the investment were made in the context of individual territories and the main trends of the investment flow return were defined.

New records of Cepaea nemoralis (Gastropoda, Pulmonata, Helicidae) and phenotypic composition of its colonies in Western Ukraine

2020 ◽  
Vol 30 (2) ◽  
pp. 75-86 ◽  
Author(s):  
N. V. Gural-Sverlova ◽  
R. I. Gural ◽  
S. P. Savchuk
Keyword(s):  
Introduced Species ◽  
New Records ◽  
Cepaea Nemoralis ◽  
Phenotypic Structure ◽  
Western Ukraine ◽  
Present Distribution

The phenotypic composition of the introduced colonies of Cepaea nemoralis in five settlements of Ivano-Frankivsk and Lviv regions of Ukraine, studied from May to July 2019, is described. The largest colonies were found in Bohorodchany (Ivano-Frankivsk region) and Lviv. In most cases, there was a pronounced dominance (from 40% or more) of the individuals with unbanded and five-banded shells - pink, less often yellow. Among the snails with five-banded shells, phenotypes with the fusion of two or more bands prevailed, among which in Lviv the phenotype (12)3(45) most often occurred, and in Bohorodchany (123)(45). Molluscs with brown shells were found in only one of the studied colonies. In Bohorodchany a differentiation of the phenotypic structure of the C. nemoralis colonies separated by a highway, was noticed. The available data on the present distribution in Western Ukraine of two introduced species of the genus Cepaea: C. nemoralis and C. hortensis are analyzed.

Differences in the distributions of three species of helicid snail in the limestone district of Derbyshire

1970 ◽  
Vol 176 (1043) ◽  
pp. 131-159 ◽  
Keyword(s):  
Species Composition ◽  
Heavy Rainfall ◽  
Plant Cover ◽  
Cepaea Nemoralis ◽  
Arianta Arbustorum ◽  
Open Woodland ◽  
Carboniferous Limestone ◽  
Made In ◽  
Main Factor

A study on the relative distributions of Cepaea nemoralis (L.), C. hortensis (Müll) and Arianta arbustorum (L,), has been made in three areas on the Carboniferous Limestone of Derbyshire, the Wye valley, Matlock and Dovedale. Samples were made by collecting these species at a large number of sites in different habitats, and also by transects through selected areas. In all the areas studied, the proportion of A. arbustorum in the samples increases with in­creasing plant cover, and is greater on north- than on south-facing slopes. A . arbustorum is commonest, and occupies the widest range of habitats, in the western parts of the Wye valley, which has heavy rainfall. It becomes rarer and more restricted in drier areas farther east. Varia­tions in humidity rather than temperature appear to be the main factor affecting the distribu­tion of this species relative to Cepaea , with A.arbustorum preferring the wetter habitats. Other studies on distribution, survival and behaviour tend to support this conclusion. The proportion of C. nemoralis in Cepaea tends to increase with decreasing plant cover in all areas, but there are important exceptions. Short rough herbage has less C. nemoralis than would be expected from the plant cover, and open woodland has more. These two habitats, with the highest heterogeneity of plant cover within sampling sites, also have the highest proportion of samples containing both species of Cepaea , while the most uniform habitats have the least. This, and other differences of distribution between the three areas, suggest that some of the differences in the distributions of C. nemoralis and C. hortensis are due to competition between them. Although aspect and rainfall have little effect on species composition in Cepaea, C. hortensis predominates in wetter habitats, suggesting that humidity is also an important factor affecting distribution. The transects show that changes in species composition with habitat and aspect occur over short distances.

scholarly journals Shell Banding and Color Polymorphism of the Introduced Snail Cepaea nemoralis (Gastropoda, Helicidae) in Lviv, Western Ukraine

Zoodiversity ◽  
2021 ◽  
Vol 55 (1) ◽  
pp. 51-62
Author(s):  
N. V. Gural-Sverlova ◽  
R. I. Gural
Keyword(s):  
Genetic Structure ◽  
Introduced Species ◽  
Color Polymorphism ◽  
Great Variability ◽  
Cepaea Nemoralis ◽  
Gene Drift ◽  
Long Term Changes ◽  
Western Ukraine ◽  
Natural Range

Th e shell coloration was studied in more than three thousand adults of the grove snail, Cepaea nemoralis (Linnaeus, 1758), from 15 colonies discovered in 2019–2020 in Lviv City and in the immediate vicinity of its south-ern administrative border (Zubra village). In most colonies, relatively light phenotypes prevailed: most oft en P00000, less oft en Y00000 or Y00300. In total, more than a third of the collected specimens had the phenotype P00000. Great variability of the phenotypic and genetic structure of this introduced species in the study area was demonstrated, which usually does not have a clear connection with the locations of colonies or with the shading of habitats. Th is may be due to both random factors (founder eff ect, gene drift in recently formed colonies), and the relative youth of the colonies. In the future, the obtained data can be used to monitor possible long-term changes in the phenotypic composition of the investigated colonies to assess the potential eff ect of selective factors on this composition, fi rst of all, climatic selection outside the natural range of C. nemoralis.

Spectrophotometric measurements of objective-prism spectra

1966 ◽  
Vol 24 ◽  
pp. 118-119
Author(s):  
Th. Schmidt-Kaler
Keyword(s):  
Progress Report ◽  
Two Dimensional ◽  
Objective Prism ◽  
Made In

I should like to give you a very condensed progress report on some spectrophotometric measurements of objective-prism spectra made in collaboration with H. Leicher at Bonn. The procedure used is almost completely automatic. The measurements are made with the help of a semi-automatic fully digitized registering microphotometer constructed by Hög-Hamburg. The reductions are carried out with the aid of a number of interconnected programmes written for the computer IBM 7090, beginning with the output of the photometer in the form of punched cards and ending with the printing-out of the final two-dimensional classifications.

Surface Structure in Microtomed Sections Caused by Glass and Diamond Knives

1971 ◽  
Vol 29 ◽  
pp. 456-457
Author(s):  
J. Temple Black ◽  
William G. Boldosser
Keyword(s):  
Plastic Deformation ◽  
Epoxy Resin ◽  
Carbon Coating ◽  
Surface Damage ◽  
Body Angle ◽  
Normal Manner ◽  
Bottom Side ◽  
Cutting Direction ◽  
Made In ◽  
Diamond Knife

Ultramicrotomy produces plastic deformation in the surfaces of microtomed TEM specimens which can not generally be observed unless special preparations are made. In this study, a typical biological composite of tissue (infundibular thoracic attachment) infiltrated in the normal manner with an embedding epoxy resin (Epon 812 in a 60/40 mixture) was microtomed with glass and diamond knives, both with 45 degree body angle. Sectioning was done in Portor Blum Mt-2 and Mt-1 microtomes. Sections were collected on formvar coated grids so that both the top side and the bottom side of the sections could be examined. Sections were then placed in a vacuum evaporator and self-shadowed with carbon. Some were chromium shadowed at a 30 degree angle. The sections were then examined in a Phillips 300 TEM at 60kv.Carbon coating (C) or carbon coating with chrom shadowing (C-Ch) makes in effect, single stage replicas of the surfaces of the sections and thus allows the damage in the surfaces to be observable in the TEM. Figure 1 (see key to figures) shows the bottom side of a diamond knife section, carbon self-shadowed and chrom shadowed perpendicular to the cutting direction. Very fine knife marks and surface damage can be observed.

Iron storage sites in the myocardium as revealed by cytohistochemistry

1988 ◽  
Vol 46 ◽  
pp. 394-395
Author(s):  
M. Ashraf ◽  
F. Thompson ◽  
S. Miki ◽  
P. Srivastava
Keyword(s):  
Cardiac Tissue ◽  
Coronary Perfusion ◽  
Intracellular Iron ◽  
Ether Anesthesia ◽  
Intense Staining ◽  
Iron Storage ◽  
Thin Sections ◽  
Rat Hearts ◽  
Cacodylate Buffer ◽  
Made In

Iron is believed to play an important role in the pathogenesis of ischemic injury. However, the sources of intracellular iron in myocytes are not yet defined. In this study we have attempted to localize iron at various cellular sites of the cardiac tissue with the ferrocyanide technique.Rat hearts were excised under ether anesthesia. They were fixed with coronary perfusion with 3% buffered glutaraldehyde made in 0.1 M cacodylate buffer pH 7.3. Sections, 60 μm in thickness, were cut on a vibratome and were incubated in the medium containing 500 mg of potassium ferrocyanide in 49.5 ml H2O and 0.5 ml concentrated HC1 for 30 minutes at room temperature. Following rinses in the buffer, tissues were dehydrated in ethanol and embedded in Spurr medium.The examination of thin sections revealed intense staining or reaction product in peroxisomes (Fig. 1).

Microanalysis of precipitates in a ferritic steel

1978 ◽  
Vol 36 (1) ◽  
pp. 618-619
Author(s):  
J.M. Titchmarsh
Keyword(s):  
Ferritic Steel ◽  
Particle Identification ◽  
Energy Dispersive ◽  
Objective Lens ◽  
Ferritic Steels ◽  
Replica Technique ◽  
X Ray ◽  
Large Numbers ◽  
Scanning Transmission ◽  
Made In

The advances in recent years in the microanalytical capabilities of conventional TEM's fitted with probe forming lenses allow much more detailed investigations to be made of the microstructures of complex alloys, such as ferritic steels, than have been possible previously. In particular, the identification of individual precipitate particles with dimensions of a few tens of nanometers in alloys containing high densities of several chemically and crystallographically different precipitate types is feasible. The aim of the investigation described in this paper was to establish a method which allowed individual particle identification to be made in a few seconds so that large numbers of particles could be examined in a few hours.A Philips EM400 microscope, fitted with the scanning transmission (STEM) objective lens pole-pieces and an EDAX energy dispersive X-ray analyser, was used at 120 kV with a thermal W hairpin filament. The precipitates examined were extracted using a standard C replica technique from specimens of a 2¼Cr-lMo ferritic steel in a quenched and tempered condition.

AEM investigation of ZrO2 solid solution formation in ZrO2/mullite composites

1984 ◽  
Vol 42 ◽  
pp. 408-409
Author(s):  
T. R. Dinger
Keyword(s):  
Solid Solution ◽  
Ion Beam ◽  
Analytical Electron Microscopy ◽  
Transformation Toughening ◽  
Solid Solution Formation ◽  
Solution Formation ◽  
Propagating Crack ◽  
Analytical Electron ◽  
Microcrack Toughening ◽  
Made In

Zirconia (ZrO2) is often added to ceramic compacts to increase their toughness. The mechanisms by which this toughness increase occurs are generally accepted to be those of transformation toughening and microcracking. The mechanism of transformation toughening is based on the presence of metastable tetragonal ZrO2 which transforms to the monoclinic allotrope when stressed by a propagating crack. The decrease in volume which accompanies this transformation effectively relieves the applied stress at the crack tip and toughens the material; microcrack toughening arises from the deflection of a propagating crack around sharply angular inclusions.These mechanisms, however, do not explain the toughness increases associated with the class of composites investigated here. Analytical electron microscopy (AEM) has been used to determine whether solid solution effects could be the cause of this increased toughness. Specimens of a mullite (3Al2O3·2SiO2) + 15 vol. % ZrO2 were prepared by the usual technique of mechanical thinning followed by ion beam milling. All observations were made in a Philips EM400 TEM/STEM microscope fitted with EDXS and EELS spectrometers.

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