581 research outputs found
Mallomonas pseudocorymbosa Gusev, Martynenko & Shkurina 2023, sp. nov.
No full text<i>Mallomonas pseudocorymbosa</i> Gusev, Martynenko & Shkurina <i>sp. nov.</i> (Figure 2). <p> <b>Diagnosis:</b> Scales are oval, tripartite, 4.8–5.9 × 3.3–4.3 µm in size, with or without a dome. The dome is large, rounded, oval or asymmetrical. The V-rib is acute, slightly hooded and its arms continuous with the anterior submarginal ribs. Anterior submarginal ribs are well developed. The anterior flange is wide, especially on the domeless scales, with a row of base plate pores at each side. The posterior flange is wide, with numerous base plate pores distributed on the surface. The shield and posterior flange have a secondary siliceous layer forming circular or elongated oval meshes unevenly distributed on the surface often with areas without development of the secondary layer. Numerous pores are placed on the basal plate. The posterior upturned rim is narrow, with inner struts visible only on TEM images, encircles less than a half of the scale perimeter. Bristles are 13–25 μm long, curved and serrated at the distal half. Shorter bristles have a bifurcated tip with a long terminal spine, and longer bristles have a prolonged thread-like terminal part. Cysts unknown.</p> <p> <i>Holotype (here designated):</i> Portion of a single gathering of cells on SEM stub No. CD8 deposited at the Herbarium, Papanin Institute for Biology of Inland Waters RAS, Borok (IBIW). Material from Ahn Hai Lake, Côn SƠn Island, Bà Rịa-Vũng Tàu Province, Vietnam. Figure 2C illustrates a representative scale from the holotype specimen.</p> <p> <i>Type Locality:</i> Ahn Hai Lake, Côn SƠn Island, Bà Rịa-Vũng Tàu Province, Vietnam. Latitude / Longitude: 8° 40.645’ N 106° 35.867’ E. At the time of collection, the pH was 6.5, temperature 30 °C, and specific conductance 201 µS cm-1. Material was collected by E.S. Gusev and Nguyen-Ngoc Lam on 3 May 2015.</p> <p> <i>Etymology:</i> The species name is derived from the fact that its scales resemble, and could be confused with, those of <i>Mallomonas corymbosa</i>.</p> <p> <i>Distribution:</i> This species has been observed in 17 localities in 13 provinces of Vietnam (Table 1). Scales of this species were also observed in Bangladesh (Takahashi & Hayakawa 1979), China (Wei &Yuan 2001, 2013; Wei <i>et al</i>. 2014), Brazil (Franceschini & Couté 1991)and South Africa (Janse van Vuuren <i>et al</i>. 2022). <i>Mallomonas pseudocorymbosa</i> was found at wide ranges of environmental parameters: pH from 6.1 to 8.6, specific conductance from 62 to 2370 µS cm-1, chlorophyll <i>a</i> values from 5 to 76 µg l –1, and temperature 17–39 ºC (Table 1).</p>Published as part of <i>Gusev, Evgeniy, Martynenko, Nikita, Shkurina, Nataliya & Dien, Tran Duc, 2023, Description of a new species of the genus Mallomonas from section Mallomonas (Synurales, Chrysophyceae) in the tropics, pp. 59-68 in Phytotaxa 618 (1)</i> on page 62, DOI: 10.11646/phytotaxa.618.1.5, <a href="http://zenodo.org/record/8389917">http://zenodo.org/record/8389917</a>
Upgrading gas assay in Donbass
No full textTyt. nagł.Pozostali autorzy artykułu: Andriej I. Sorokin, S.W. Goszowskij, I. I. Martynenko, Nikola A. Dudla.Dostępny także w formie drukowanej.STRESZCZENIE: W artykule przedstawiono i omówiono kwestię polepszenia jakości badań gazu w złożach węgla. Opisano projekt kolektora gazu, umożliwiającego znaczne podniesienie objętości i niezawodności badań gazu. W pracy przedstawiono wyniki zastosowania tej techniki na złożach Donbasu. SŁOWA KLUCZOWE: podniesienie jakości gazu, złoża węgla, jakość gazu. ABSTRACT: In work the actual problem of improvement the quality of gas approbation of coal deposits is proved and put. The design advanced gas collector is described, that allows increasing a considerably volume and reliability of selection gas tests. Results of its use on coal deposits of Donbass are resulted. KEYWORDS: upgrading gas, coal deposits, quality of gas
Electrically enhanced drying of white champignons
No full text[EN] Electrohydrodynamic (EHD) drying is a novel non-thermal dewatering technology using electric discharge in air to enhance dehydration of heatsensitive biomaterials. Low energy consumption and high product quality make it attractive for industry. In this study, the mushrooms slices have been dried under sole EHD with 12, 14, and 16 kV DC, and EHD in combination with air cross-flow at 1 m s-1 and different relative humidity (RH) from 30 to 70 %. It was found that drying kinetics was exponential over initial moisture contents from 3.3 to 14.1 g·g-1 (db). The equilibrium moisture content ranged
from 0.15 to 0.1 g g-1 depending on RH. Decrease of RH or air cross-flow significantly improved efficiency of EHD dryingBashkir, I.; Kudra, T.; Martynenko, A. (2018). Electrically enhanced drying of white champignons. En IDS 2018. 21st International Drying Symposium Proceedings. Editorial Universitat Politècnica de València. 571-578. https://doi.org/10.4995/IDS2018.2018.7318OCS57157
COOPERATIVE EFFECTS IN OPTICAL AND ESR SPECTROSCOPY OF NITROGEN ATOMS ISOLATED BY SOLIDIFICATED HELIUM
No full text1. E.B. Gordon, V.V. Khmelenko, A.A. Pelmenev, E.A. Popov and O.P. Pugachev, Chem. Phys. Lett. 155(3), 301-304 (1989). 2. R.E. Boltnev, E.B. Gordon, V.V. Khmelenko, A.A. Pelmenev, I.N. Kusliniskaya, M.V. Martynenko, E.A. Popov and A.V. Shestakov, Chem. Phys. 189(2), 367-382 (1994). 3. R.E. Boltnev, E.B. Gordon, V.V. Khmelenko, M.B. Martynenko, A.A. Pelmenev, E.A. Popov and A.F. Shestakov, J. Chim. Phys. 92(2), 362-383 (1995).Author Institution: Institute for Energy Problems of Chemical Physics (branch)The heavy guest particles embedded to superfluid helium can cause its . The so-called Impurity Helium Solid Phase (IHSP) being stable then up T = 7K shows the regular arrangement of the impurities with their reliable isolation by helium atoms. The feasibility of previously excited species capture to IHSP may be achieved. So metastable N(D) atoms display extremely long-lived, more than s, luminescence. Their radiative decay turns out to be caused solely by excimer-like state formation with accidentally neighbouring heavy . That was proved for N(D)-Rg pairs (Rg = Ne, Ar, Kr, Xe) by both spectra shapes and emission lifetimes observed. For N(D)- state the comparison of atomic and rovibronic spectra evidences their excimer nature as . The distances between neighbour N atoms in IHSP, 1 mm, are small enough for cooperative bulk magnetic effects appearances. ESR experiments with N(S) atoms show the effects of either magnetic alignment or spin-exchange narrowing
Relativistic corrections to the pair Bc-meson production in e+e− annihilation
No full textAbstractRelativistic corrections to the pair Bc-meson production in e+e−-annihilation are calculated. We investigate a production of pair pseudoscalar, vector and pseudoscalar+vector Bc-mesons in the leading order perturbative quantum chromodynamics and relativistic quark model. Relativistic expressions of the pair production cross sections are obtained. Their numerical evaluation shows that relativistic effects in the production amplitudes and bound state wave functions three times reduce nonrelativistic results at the center-of-mass energy s=22 GeV
Lifestyle diseases: Health in the contemporary city∗
No full textThe article presents an overview of studies of the factors that affect health in the contemporary city. The increase in the urban population makes it necessary to analyze factors (environmental, social, etc.) and features of the urban structure in terms of their impact on the quality and standards of living. However, assessments of the city in the study of healthy lifestyle are contradictory. On the one hand, researchers emphasize the availability of medical care, effective fight against infectious diseases, and numerous attempts to transform the visual urban space. On the other hand, researchers stress the spatial inequality of the urban structure (for example, in access to health care), the spread of noncommunicable and lifestyle diseases in cities, the destruction of social ties and the problem of loneliness. Therefore, it is necessary to systematize the current research, identify the main risks of urban lifestyle, and discuss the role of social sciences in such interdisciplinary studies. The proposed typology of health research in the contemporary city is based on Yu.P. Lisitsyn’s ratio of factors that determine the level of health. Although many studies claim an integrated approach, the analysis showed that most of them present one of three approaches: the study of sanitary-hygienic features of the urban space (or its medical aspects); the study of ecology and architecture of the urban space; the study of social-psychological features of the urban lifestyle. The systematization of the main risks of the urban lifestyle allowed the author to identify the priority areas of its study. Thus, based on the features of the covid-19 pandemic in cities, the author argues that there is a need for more active participation of sociologists in the discussion of both infectious and non-communicable diseases, which should focus on social factors of their spread, course, prevention and control
Ukrainian Teachers’ Views to the Labour Education of the Youth at the Beginning of the XX Century
No full textУ статті визначено особливості української педагогічної думки початку
ХХ ст.: виховання гармонійно розвиненої особистості, збереження і розквіт індивідуальності дитини у процесі трудової діяльності на національній основі. Висвітлено погляди прихильників створення української національної системи освіти засобами трудового виховання молоді (Б. Грінченко, С. Русова, С. Сірополко, Я. Чепіга, Т. Лубенець, С. Шацький, П. Блонський; В. Затонський, М. Скрипник). Обґрунтовано виникнення педагогічної тенденції реформи освіти, за якою дитячій праці було відведено роль дієвого чинника для підготовки кваліфікованого робітника.The article defines the features of Ukrainian educational thought at the beginning of XX century: upbringing harmoniously developed personality, identity preservation and flourishing of a child in the course of employment on a national basis. Clarifies the supporters of the Ukrainian educational national system formation by the method of the labour education of the youth views (B. Grinchenko, S. Rusova, S. Siropolko, Ya. Chepiga, T. Lubenets, T. shatskiyj, P. Blonskyj, V. Zatonskyj, M. Skrypnyk). Substantiates the pedagogical tendency of education reform, according to which the child labour was designated as an effective factor of qualified specialists training
Sergii Arkadiyovych Tomilin and his contribution to social hygiene
No full textPublication dwells upon the life of S. A. Tomilin, an outstanding scientist and lecturer. The published works in different fields of medicine. S. A. Tomilin was the author of more than 100 scientific works devoted to important problems of Sanitary and Preventive medicine. Two of them "The Attempt of Sanitary Description of Ukraine" (1928) and "Sexually Transmitted Diseases in the District Cities of Ukraine in 1927" (1928) were awarded by the Ukrainian Sciences' Administration.
In a half of a century (1973) Tomilin's scientific works of 1920s' ̶1930s' were published in one book "Demography and Social Hygiene" as a works of high topicality
Comprehension of the Animated Films Culture as a Factor of Development of Capacity for Symbolic Mediation by a Senior Preschool-Age Child
No full textAbstractThe article highlights the features of a child's capacity for symbolic mediation in connection with the animated film involvement in the culture. We have analyzed characteristics of a child's immersion in the process of consuming animated production, possible means of its comprehension and the features of children's higher mental functions operation in connection with the quality of the child's comprehension. We have identified the connection between the factor of a quality analysis of the content of animation viewed by the child and a high level of development of a child's capacity for symbolic mediation and a high level of arbitrary behavior
Multiculturalism and Political Discourse of Globalization
No full textThis article examines the current problems of modernity associated with the implementation of the policies of multiculturalism, criticizes various points of view of that phenomenon in political life. The author shows that the problem of multiculturalism is inseparably linked with the interpretation of the idea of a global culture, which is not a superstructure of national cultures, but is a kind of a new sort of social rhizome
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