169 research outputs found
Sovetskaja Antropogonia (Speckurs dlja studentov Laurea specialistica rimskogo universiteta La Sapienza).
No full textTraduzione del titolo in italiano:
"Antropogonia sovietica. Module per gli studenti di laurea specialistica dell'Università di Roma La Sapienza".
Abstract in inglese:
Soviet heroes (module for the students of a second-level graduation course at the University of Rome “La Sapienza”)
The module analysed soviet culture as a multimedia hypertext having as its core the cult of heroes and their deeds. Starting from representations in propaganda, literature, music, painting, architecture, and everyday sign systems, the characteristics of the soviet hero were analysed in a historical perspective along with those of the soviet man. The students were led to understand different forms of creation, preservation, transposition and reproduction of heroic myths through the identification of several ‘ideal types’ of soviet man – such as the revolutionary, the civil war hero, the “real communist”, the “Father of the People”, the “Hero of work”, the “Pioneer-Hero”, the “Hero of the Soviet Union” – and their antagonists – the bourgeois, the “white guard”, the kulak, the enemy of the people, the spy, the cosmopolitan, the dissident. Particular attention was given to the different institutional phases of a man’s life (from the junior communist-pioneer, to the Komsomolets, to the adult communist) and to moments of complete juxtaposition between real and ideal, i.e. moments when the superhuman quality of the soviet man and the revolution as an anthropological project manifest themselves
Bradophilidae Marchenkov 2002
No full textFamily Bradophilidae Marchenkov, 2002 Marchenkov (1999) suggested that the monotypic genus Bradophila belonged in a separate family and formally established it a few years later (Marchenkov 2002). The Bradophilidae is one of six families of mesoparasitic copepods which have adult females that are highly transformed and live partially embedded in their polychaete hosts, the other five being the Herpyllobiidae, Jasmineiricolidae, Phyllodicolidae, Saccopsidae and Xenocoelomatidae (Boxshall et al. 2015). Members of the latter family are radically different, mostly internal, parasites maintaining only a small aperture through the host’s body wall through which paired egg sacs are extruded. Adults of both sexes lack all trace of appendages and the three known species are cryptogonochoristic, with males reduced to a functional testis housed within a receptaculum masculinum inside the female body (Bresciani & Lützen 1974). In the Saccopsidae both the ovaries and digestive system are contained within the external sac-like body which connects via a short stalk with the internal holdfast or frontal bulla. The latter is a simple ring-shaped thickening of the cuticle surrounding the oral region and penetrates the blood vessels of the host’s gills (Bresciani & Lützen 1961) or opens into the connective tissues of the body wall (Bresciani & Lützen 1975). Adult females of the other four families share a bipartite body comprising an ectosoma lying external to the body wall of the host, and an endosoma which is embedded within the host. In the sole member of the Jasmineiricolidae the female reproductive organs are located in the endosoma (Boxshall et al. 2015) while in adult females of the Herpyllobiidae and Phyllodicolidae the ectosoma is essentially the reproductive tagma, containing the ovaries. The condition in the Bradophilidae remains equivocal (see below). Adult females in the family Phyllodicolidae have a unique type of endosoma, represented by a pair of elongate rootlets, and, rather than producing genuine egg sacs, attach their eggs separately to an axial filament originating at the genital aperture (Delamare-Deboutteville & Laubier 1960a; Laubier 1961). Members of the remaining two families, Herpyllobiidae and Bradophilidae, differ from each other primarily in the structure of the female endosoma and the gross morphology of the male (e.g. Lützen 1966; Marchenkov 2002, López-González et al. 2006). Males of Bradophila have large prehensile antennae, robust subchelate maxillipeds and conspicuous caudal processes, all of which are used to attach to the ectosoma of the female (Marchenkov 2002; this study). The highly reduced males in the Herpyllobiidae all lack appendages (except for a pair of putative maxillipeds in Gottoniella López-González, Bresciani & Conradi, 2006). While herpyllobiids have dwarf males, typically being at least an order of magnitude smaller than the female, such extreme size sexual dimorphism is not encountered in the Bradophilidae. Unlike in Bradophila, male attachment in the Herpyllobiidae appears to be by means of a secretion in the vicinity of the genital apertures of the female. In addition to the type genus, the poorly known genera Trophoniphila and Flabellicola Gravier, 1918a are here also included in the family on the basis of the absence of cephalic appendages in the adult female, the shape and size of the egg sacs and their utilization of bristle-cage worms (Flabelligeridae) as hosts. Since both genera are only known from the less informative mesoparasitic female it is possible that they will be relegated to junior subjective synonyms of Bradophila when information about their respective males becomes available. Bradophilids are very rarely reported but it is known that other as yet undescribed species occur in European waters (Boxshall et al. 2015).Published as part of Huys, Rony, 2016, Enigmas from the past: M'Intosh's (1885) annelidicolous copepods from the voyage of H. M. S. Challenger, pp. 355-385 in Zootaxa 4174 (1) on page 370, DOI: 10.11646/zootaxa.4174.1.22, http://zenodo.org/record/26225
Achelidelphys papuensis Boxshall & Marchenkov, 2007, n. sp.
No full textAchelidelphys papuensis n. sp. Type material: Holotype female, 6 paratype females. Registration nos MNHN-Cp 2411 (holotype in alcohol), MNHN-Cp 2412 (3 paratype females in alcohol), BMNH 2007.1 (1 paratype female in alcohol), BMNH 2007.2 – 3 (2 paratype females mounted on SEM stubs). Type Locality: 02° 39.49 ’S 150 ° 25.56 ’E off Papua New Guinea, 18 m depth; 2 July 2003. Host: Didemnum sp. Locality in host: within the common tunic between the zooids (F. Monniot, pers. comm.). Etymology: the species name refers to the type locality. Description: Body highly transformed, stellate (Figs 10, 11 A); segmentation indistinct with segmental boundaries marked by superficial folds. Cephalosome with frontal margin merging into tapering anterolaterally-directed antennulary lobes. Rostrum simple, elongate, frontally-directed lobe, without accessory median lobe. Post-rostral median lobe absent. Labrum forming short, tapering, posteriorly-directed lobe (Fig. 11 B). Lateral margin of cephalosome not produced into ridge-like swellings. Antennomedial processes absent. Metasome truncated, with urosome hardly extending posterior to origin of leg 4. Legs 1 to 4 transformed, originating laterally, each occupying entire margin of somite and produced laterally, giving body stellate appearance. Mid-ventral metasomal processes absent. Urosome vestigial, located terminally and typically directed dorsally (Fig. 11 C); bearing partly incorporated caudal rami. Surface of body, rostrum, labrum, cephalosomic processes, and legs densely ornamented with surface setules: surface of rostrum, antennules and legs 1 to 4 densely folded, with deep folds orientated around circumference of process (Fig. 11 D). Antennules forming bluntly-rounded lobe on either side of frontal margin of cephalosome, with vestigial apical setae (Figs 10, 11 A). Antenna to maxilliped entirely lacking. Legs 1 to 3 biramous; rami represented by unsegmented, tapering lobes; exopodal lobes laterally-directed, with broad base, carrying smaller endopodal lobes ventrally (Figs 10, 11 B). Leg 4 uniramous comprising short, posterolaterally-directed lobe representing exopod; lobe strongly tapering, conical in shape, ranging from 0.90–1.38 times longer than width at base. Exopodal lobes of legs 2–4 each housing internal expansion of multilobate uterus, containing eggs visible through body wall. Leg 5 absent. Body length of female 1.36–1.93 mm, measured from base of rostrum to posterior extremity of urosome (based on 6 specimens). Male unknown. Remarks: The new species lacks any median ventral processes on the metasome between the legs. The lack of such processes serves to distinguish it from A. steinitzi which has two processes, one located between each of the second and third leg pairs, and from A. drachi and A. nigra which have a single process located between the second legs. It differs from A. stellata and A. reducta, both of which have a strongly convex frontal margin to the head which merges laterally into the incorporated antennulary lobes. It differs from A. ampla in the shape of the uterus, which is compact and does not extend into the exopodal lobes of the legs in A. ampla but is multilobate and extends into the exopodal lobes in the new species. Achelidelphys papuensis n. sp. most closely resembles A. chengae and these two species are also similar in body size, but they can be distinguished by the relative length of the paired lobes representing the fourth legs. In all specimens of the new species this lobe is short and conical, ranging from 0.9 to 1.4 times longer than the width at its base, whereas the lobes of A. chengae are elongate, about three times longer than the basal width. Although in these highly modified endoparasites overall shape appears to vary according to the degree of contraction or expansion of the limbs and rostrum, we believe that the difference in proportions of leg 4 exceeds the level that can be attributed to intraspecific variation. In addition, in their description of A. chengae, Lafargue and Laubier (1978 b) state “L’ornementation cuticulaire est particulièrement réduite par rapport aux autres espèces du genre: elle se compose de minuscules spinules mesurant 1 à 2 microns de longeur.” In contrast, the surface setules of the new species are an order of magnitude longer, often exceeding 20 microns in length. Finally, Lafargue and Laubier (1978 b) describe the tip of the antennule of A. chengae as bearing some fine setae accompanied by very short conical-cylindrical setae, the presence of which we have confirmed (Fig. 9 E), and they show these surrounded by very sparse surface setules. In the new species, the tip of the antennule lacks such short conical-cylindrical setae and the entire surface of the antennule is densely covered with long setules (Fig. 11 D).Published as part of Boxshall, Geoff A. & Marchenkov, Andrey, 2007, A revision of the Brementia - group of genera (Copepoda: Notodelphyidae), with descriptions of a new genus and four new species, pp. 37-68 in Zootaxa 1459 on pages 59-61, DOI: 10.5281/zenodo.17636
Representation, reliability and reproducibility of the running test using a metronome
No full textRepresentation, reliability and reproducibility of the running test using a metronome / A. Yefremenko, L. Shtsterova, V. Shutieiev, O. Kolomiitseva, S. Pyatisotskaya, O. Nasonkina, M. Marchenkov, A. Deyneko // Journal of Physical Education and Sport ® (JPES). – 2019. – № 19(4). – Art 154 – Р. 1066–1070. DOI:10.7752/jpes.2019.02154Abstract. Results of familiarization, assessment of reliability and comparability of results of the test run in a metronome rhythm are presented. The purpose of the research: to describe use and to estimate reliability of the test run in a metronome rhythm which was carried out by students sportsmen of different sports specializations. Objects: the prepared students (boys n = 26 and girls n = 14). Methods: anthropometry; testing (run for 4 minutes in a metronome rhythm which changed: the first minute – 140 bpm, the second minute – 150 bpm, the third minute – 160 bpm, the fourth minute – 170 bpm; video filming and video analysis. Results: the reliable interrelations are revealed as a result of Pearson correlation calculation for indicators of testing No. 1-2-3: average HR (r=0.77-0.65); average distance length (r=0.85-0.54). Interclass coefficient of correlation for: average HR (r=0.64-0.65); distances of run (r=0.84-0.51); average speed of run (r=0.84-0.51). Conclusions: the sufficient reliability and stability of the test were shown because the extent of coincidence of results at the repeated testing had the reliable correlations and coherence during rather long period (three weeks). The test has the sufficient coherence as the scenario of its carrying out allows providing independence of results of testing of personal qualities of the individual who is carrying out the test. It can be recommended to runners for endurance for assessment of technique features; to other groups of individuals for the assessment of state of motor function, profitability and efficiency of movement, psycho-emotional features
Electroresistive and magnetoresistive properties of Nd0.7Sr0.3MnO3 after quenching under pressure of 9GPa
No full textPolycrystalline Nd0.7Sr0.3MnO3 was quenched from 1300 K to 300 K and 80 K after it had been subjected to a high quasihydrostatic pressure of 9 GPa. Such high pressure and high temperature treatment (HPT) results in significant changes of the crystallochemical parameters-Mn-O lengths and Mn-O-Mn angles within unchanged lattice symmetry of the Pnma-type. A strong increase of the resistivity and a large decrease of the FM-PI transition temperature were detected for the Nd0.7Sr0.3MnO3 HPT treated samples. The intrinsic characteristic T-MI(T-C) (T-MI is the metal-insulator and T-C is the ferromagnetic-paramagnetic transition temperature) correlates with the change of the Mn-O(1)-Mn angle, which is consistent with the double exchange model of the ferromagnetic metallic state in manganites. Remarkable electroresistive (ER) and magnetoresistive (MR) effects appear after HPT treatment, which were not present in the starting Nd0.7Sr0.3MnO3 sample. The structure sensitive properties such as resistivity, MR and ER effects correlate with the change of the nanograin sizes after HPT treatment. Nonlinear current-voltage characteristics showing a hysteresis appear for HPT treated samples at low temperatures. The transport in granular Nd0.7Sr0.3MnO3 samples is likely defined by spin-dependent scattering of charge carriers inside the ferromagnetic metallic grains with embedded small charged isolating islands and by jumping over charged insulating barriers at the intergrain boundaries, which can be strongly affected by the external electric and magnetic fields. (C) 2011 Elsevier B.V. All rights reserved
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