1,107 research outputs found
Neosychnocotyle maggiae Snyder & Tkach 2007
No full textNeosychnocotyle maggiae Snyder & Tkach, 2007 Carettochelys insculpta (Reptilia); freshwater; intestine; AUS; Australia (Oceania) (Snyder & Tkach 2007). Remark: Type host; sequence of partial 18 S, ITS- 1, 5.8S, ITS- 2 and partial 28 S in the GenBank database EF015578. Emydura victoriae (Reptilia); freshwater; intestine; AUS; Australia (Oceania) (Snyder & Tkach 2007).Published as part of Alves, Philippe V., Vieira, Fabiano M., Santos, Cláudia P., Scholz, Tomáš & Luque, José L., 2015, A Checklist of the Aspidogastrea (Platyhelminthes: Trematoda) of the World, pp. 339-396 in Zootaxa 3918 (3) on page 355, DOI: 10.11646/zootaxa.3918.3.2, http://zenodo.org/record/24120
Morishitium urocissae Dronen & Tkach 2014
No full textM. urocissae Dronen & Tkach, 2014 Type host. Red-billed blue magpie, Urocissa erythrorhyncha (Boddaert) (Passeriformes: Corvidae). Type locality. Dashahe Nature Reserve, Guizhou Province, People’s Republic of China. Remarks. Rudimentary oral sucker present—Dronen & Tkach (2014).Published as part of Dronen, Norman O. & Blend, Charles K., 2015, Updated keys to the genera in the subfamilies of Cyclocoelidae Stossich, 1902, including a reconsideration of species assignments, species keys and the proposal of a new genus in Szidatitreminae Dronen, 2007, pp. 1-100 in Zootaxa 4053 (1) on pages 75-76, DOI: 10.11646/zootaxa.4053.1.1, http://zenodo.org/record/23711
HUMAN RESOURCE AS THE BASIS OF ECONOMIC SECURITY OF THE STATE
Get PDFThe work analyses the demographic and migration situation in Ukraine, predicted the possible consequences for the state as a result of such losses of the human resource as it is today, the dependence of the birth rate on the economic development of the country is shown. It is pointed out the lack of strategic planning in the state, which was supposed to ensure sustainable social and economic development of the state for decades. Migration programs for repatriation, simplification of procedures for obtaining citizenship and obtaining labor visas in such countries as Poland, Hungary, Turkey, Russia are considered. The main directions for combating the demographic crisis and population aging in Japan are given. On the example of China, it is shown that the main constituent of public success, both internal and external, is its population. Conclusions and recommendations are made aimed at preserving and restoring the human resource by the state
СУЧАСНІ ПІДХОДИ ДО ПОНЯТТЯ ТА КЛАСИФІКАЦІЇ РЕСУРСІВ І РЕСУРСНОГО ЗАБЕЗПЕЧЕННЯ
Get PDFThe article analyzes modern approaches to the definition and classification of the term "resource", "resource support". Suggested a specific classification of resources, proceeding from the properties of resources that will allow choosing the optimal (effective) level of resource use. The analysis revealed new approaches to resource supply, that conventional called static and managerial-logistic, which can be used to ensure the defense capability of the state. It is confirmed that resource support is a complex and multidimensional process. It is proved that in the context of provision of mobilization training, the managerial-logistic approach is more acceptable. The features of the resource support of the mobilization preparation of the state are determined
Neoastiotrema trituri Tkach 2008
No full textNeoastiotrema trituri (Grabda, 1959) Tkach, 2008 (Fig. 17) (Syn. Astiotrema trituri Grabda, 1959) Records. 1. Grabda (1959a, 1959b); 2. Sharpilo & Iskova (1989); 3. Tkach (2008). Remarks. Grabda (1959a) described A. trituri from the small intestine of the smooth, northern smooth or common newt, Lissotriton vulgaris (Linnaeus) (syn. Triturus vulgaris Dunn) (Caudata: Salamandridae), from Lake Mamry in northeastern Poland. Astiotrema trituri was distinguished from all Astiotrema species by (i) the position of the posterior testis near the posterior extremity of the body and posterior to the ends of the ceca, (ii) the much smaller cirrus pouch, and (iii) very large eggs – “almost double-sized” (48–61; 54 × 25–31; 29). That same year, Grabda (1959b) elucidated that A. trituri has life-cycle patterns identical to that of members of the Plagiorchioidea and concluded that the first intermediate host was a pulmonate snail, the great ramshorn, Planorbarius corneus (Linnaeus) (syn. Coretus corneus [Linnaeus]) (Gastropoda: Planorbidae). The second intermediate hosts included some cladoceran species: Simocephalus exspinosus (De Geer), Ceriodaphnia reticulata (Jurine), Daphnia magna Straus (Anomopoda: Daphniidae) and Eurycercus lamellatus (Müller) (Anomopoda: Eurycercidae). The development of this parasite includes the formation of a sporocyst and a xiphidiocercaria. Molecular characterization by Tkach (2008) of some taxa of Astiotrema including A. reniferum , A. monticellii (= P. monticellii), A. turneri (= H. turneri) and A. trituri demonstrated that the first three taxa formed a monophyletic clade closest to the heterophyids in contrast to A. trituri which clustered very close to Plagiorchis Lühe, 1899. Concerning A. trituri , it possesses a typical plagiorchiid-like bipartite seminal vesicle, whereas the other three species of Astiotrema (sensu lato) in the analysis of Tkach (2008) possess an undivided, sac-like seminal vesicle. Based on life-cycle patterns of A. monticellii (= P. monticellii) examined by Shevchenko & Vergun (1960), Tkach (2008) referred that: (i) the first intermediate host of A. monticellii (= P. monticellii) is the prosobranch (gilled) snail Bithynia leachii (Sheppard) (Gastropoda: Bithyniidae), not a pulmonate one as described for A. trituri; (ii) amphibians serve as the definitive host for A. trituri (see Grabda 1959b) whereas amphibians represent intermediate hosts for A. monticellii (= P. monticellii) (Shevchenko & Vergun 1960); and (iii) the development of A. monticellii (= P. monticellii) includes the formation of cercariae from the Pleurolophocerca group within rediae (see Shevchenko & Vergun 1960), which is typical for members of the Opisthorchioidea. As previous molecular phylogenetic analyses generally indicated that Astiotrema formed a monophyletic clade distinctly separate from all members of the Plagiorchioidea and that clade was, moreover, closer to the Opisthorchioidea (Tkach et al. 2001; Olson et al. 2003), Tkach (2008) removed A. trituri from Astiotrema and transferred it into the Plagiorchiidae. Despite the high similarity between A. trituri and members of Plagiorchis, the position of the right posterior testis (near the posterior extremity and past the cecal ends) vs the left anterior testis (intercecal and separated from right posterior testis by numerous uterine coils) gave justification for separating A. trituri into its own genus, Neoastiotrema, with its type- and only species, N. trituri (see Tkach 2008). Besprozvannykh et al. (2015) demonstrated that Shevchenko & Vergun (1960) most likely described a larva belonging to a member of the Opisthorchioidea and neither the cercaria nor the metacercaria of a species of Astiotrema. In addition, they clarified that the first intermediate host of A. odhneri is a pulmonate snail and not a prosobranch (gilled) one; whereas, the second intermediate host can include pulmonate snails, frog tadpoles, and small fish within which sporocysts and xiphidiocercariae develop, but neither rediae nor pleurolophocercariae form. Besprozvannykh et al. (2015, fig. 2) also demonstrated through 28S rRNA gene sequence data that Astiotrema species clustered away from the Plagiorchioidea and formed a monophyletic clade closer and in a basal position to the Opisthorchioidea. Thus, observations of life-cycle patterns by Besprozvannykh et al. (2015) point out a convergence between both Neoastiotrema and Astiotrema, whereas their phylogenetic results indicate a distant relationship between them. Accordingly, we conclude that: (1) reliance on life cycle patterns for differentiating between these two genera may not be useful; (2) without distinct morphological evidence, morphological data become more confusing and unconvincing for differentiating among morphologically similar taxa; hence, using molecular phylogenetic results and support may illustrate the degree of divergence or convergence and give an indicator for delimitations of species and/or higher ranks; (3) the bipartite vs unipartite nature of the seminal vesicle herein represents a stronger feature for differentiating between these two genera and it can be highly effective in differentiating at higher levels of taxonomy such as families or even superfamilies as stated by Pojmańska et al. (2008) and Tkach (2008).Published as part of Karar, Yasser F. M., Blend, Charles K., Dronen, Norman O. & Adel, Asmaa, 2023, Towards resolving the problematic status of the digenean genus Astiotrema Looss 1900: Taxa excluded from Astiotrema (sensu stricto) with special reference to plagiorchioid genera closely related to the restricted concept of Astiotrema, pp. 445-495 in Zootaxa 5284 (3) on pages 463-464, DOI: 10.11646/zootaxa.5284.3.2, http://zenodo.org/record/792950
Climate Arctic Governance: Perspectives on sub-national data-driven policymaking
No full textPresentation of the member of the University of Lapland team working in the WP7 - Pavel Tkach at Climate Arctic Governance conference in Copenhagen that took place on September 16, 2022, about aspects of Arctic regional climate governance information and knowledge about which the author took from his work in the Arctic PASSION project and subsequent communication with the policymakers
MODERN APPROACHES TO THE CONCEPT AND CLASSIFICATION OF RESOURCES AND RESOURCE SUPPORT
Get PDFThe article analyzes modern approaches to the definition and classification of the term "resource", "resource support". Suggested a specific classification of resources, proceeding from the properties of resources that will allow choosing the optimal (effective) level of resource use. The analysis revealed new approaches to resource supply, that conventional called static and managerial-logistic, which can be used to ensure the defense capability of the state. It is confirmed that resource support is a complex and multidimensional process. It is proved that in the context of provision of mobilization training, the managerial-logistic approach is more acceptable. The features of the resource support of the mobilization preparation of the state are determined
Parapholis cylindrica – a nomenclatural correction
Get PDFRöser, M. & Tkach, N., 2020: Eine nomenklatorische Korrektur zu Parapholis cylindrica. Schlechtendalia 37: 27–29.
Vor kurzem wurde die neue Kombination Parapholis cylindrica veröffentlicht, allerdings ohne direkten Verweis auf das Basionym (Art. 41.5), so dass die neue Kombination nicht gültig ist. Dieses Defizit wird hier behoben, ergänzt durch eine Diskussion der Nomenklatur, Synonymie und Verwandtschaftsverhältnisse von Parapholis, der bisherigen Gattung Hainardia und anderen pooiden Gräsern mit ährigen oder traubigen Infloreszenzen.Röser, M. & Tkach, N., 2020: Parapholis cylindrica – a nomenclatural correction. Schlechtendalia 37: 27–29.
In a recent publication, the new combination Parapholis cylindrica has been proposed without direct reference to the basionym, so that this combination is invalid (Art. 41.5). This shortcoming is rectified and supplemented by a discussion of the nomenclature, synonymy and relationship of Parapholis, the previous genus Hainardia and other pooid grasses with spicate or raceme-like inflorescences.Die Schlechtendalia publiziert Originalbeiträge mit Schwerpunkt Spezielle Botanik und Biodiversität, Floristik, Mykologie/Lichenologie, Wissenschaftsgeschichte und andere Themen mit Bezug zu Botanischen Gärten und Herbarien
Mykhailo Tkach`s love songs
No full textСтаття присвячена аналізові текстів пісень М. Ткача на тему кохання. Детально розглядаються їхні мотиви, символічно-образна система та художні особливості. На цій основі простежується тісний зв’язок між індивідуальним авторським началом, поетикою народної пісні та традиціями української класичної поезії.Статья посвящена анализу текстов песен М. Ткача на тему любви. Подробно рассматриваются их мотивы, символично-образная система и художественные особенности. На этой основе прослеживается тесная связь между индивидуальным авторским началом, поэтикой народной песни и традициями украинской классической поэзии.This article analyzes Mykhailo Tkach`s love songs. Their motives, symbolic-imaginative system and artistic features are considered here. It was observed that there is a close connection between the author`s style, the poetics of folk song and the traditions of Ukrainian classical poetry
- …
