105,686 research outputs found
Balkanopetalum beskovi Strasser 1973
No full textBalkanopetalum beskovi Strasser, 1973 Figs 79. Type locality: ‘Topchika Höhle bei Dobrostan’. Literature records: Topchika Cave near Dobrostan (Strasser, 1973: 429); Yamata Cave near Dobrostan; Hralupa Cave near Dobrostan; Druzhba Pot hole near Dobrostan (Beron, 1994: 83). Strasser (1973: 429) referred his earlier (Strasser 1969: 145) record of rhodopinum juveniles from Garvanyovitsa Cave near Turen to beskovi, but the identity of these specimens remains uncertain. Material examined (all from Bulgaria): 2 MM, 3 FF, 3 juv., Asenovgrad District, Dobrostan Village, Topchika Cave, 19.02.1997, T. Ivanova leg.; 4 MM, 12 FF (2 MM, 2 FF, ZMUC), same village, Druzhba Pot hole, 26.09.1992, P. Beron leg.; 1 M, 1F, same village, Hralupa Cave, 10.06.1961, G. Bachvarov leg.; several subad., same locality, 24.08.1970, C. Delchev leg.; 1F, 1 subad., same village, Yamata Cave, 17.07.1961, G. Bachvarov leg.; 2 FF, same village, Pirkovskata Cave, 1,200 m alt., clay, 20.10.2001, B. Petrov, V. Beshkov leg.; 2 FF, 1 juv., Mostovo Village, Zmiin burun Pot hole, 980 m alt., 18.04.1993, P. Stoev leg. Diagnosis. This species differs from its congeners by the following combination of characters: The anterior coxal process has a small tooth at its base; the posterior coxal process is straight; the femoroid has a basal tooth; the ovoid plate is thin and sharpened; the distal femoroid process is black, medially incised with two well developed lateral processes; the solenomerite is trifid (Figs 7, 8). The prefemur of male 7th legpair is moderately swollen mesally (Fig. 9). Chaetotaxy, see Table 3. Notes. This species occurs in caves and pot holes in the karst massif of Dobrostan, the central part of the Rhodopi Mts. Beron (1972, 1994) referred to this species as B. beshkovi Strasser, since the name of the person, which it honors is currently transliterated as Beshkov. However, Strasser (1973) transliterated the name as Beškov and in the specific name correctly omitted the diacritical mark over the "s". B. beskovi coexists with typical cavedwellers like Cordioniscus schmalfussi Andreev, 2002 (Isopoda), Rhodopioniscus beroni (Vandel, 1965) (Isopoda), Trichoniscus rhodopiense Vandel, 1965 (Isopoda), Troglohyphantes bureschianus Deltshev, 1975 (Araneae), and Histopona tranteevi Deltshev, 1978 (Araneae).Published as part of Stoev, Pavel & Enghoff, Henrik, 2003, Systematics, phylogeny and biogeography of genus Balkanopetalum Verhoeff, 1926 (Diplopoda: Callipodida: Schizopetalidae), pp. 1-26 in Zootaxa 272 (1) on page 10, DOI: 10.11646/zootaxa.272.1.1, http://zenodo.org/record/501436
Structural basis for m(3)G-cap-mediated nuclear import of spliceosomal UsnRNPs by snurportin1
No full textIn higher eukaryotes the biogenesis of spliceosomal UsnRNPs involves a nucleocytoplasmic shuttling cycle. After the m(7) G-cap-dependent export of the snRNAs U1, U2, U4 and U5 to the cytoplasm, each of these snRNAs associates with seven Sm proteins. Subsequently, the m(7)G-cap is hypermethylated to the 2,2,7-trimethylguanosine (m(3)G)-cap. The import adaptor snurportin1 recognises the m(3)G-cap and facilitates the nuclear import of the UsnRNPs by binding to importin-beta. Here we report the crystal structure of the m(3)G-cap-binding domain of snurportin1 with bound m(3)GpppG at 2.4 angstrom resolution, revealing a structural similarity to the mRNA-guanylytransferase. Snurportin1 binds both the hypermethylated cap and the first nucleotide of the RNA in a stacked conformation. This binding mode differs significantly from that of the m(7)G-cap-binding proteins Cap-binding protein 20 (CBP20), eukaryotic initiation factor 4E (eIF4E) and viral protein 39 (VP39). The specificity of the m(3)G-cap recognition by snurportin1 was evaluated by fluorescence spectroscopy, demonstrating the importance of a highly solvent exposed tryptophan for the discrimination of m(7)G-capped RNAs. The critical role of this tryptophan and as well of a tryptophan continuing the RNA base stack was confirmed by nuclear import assays and cap-binding activity tests using several snurportin1 mutants
Telsonius nycteridonis , Strasser 1976
No full textTelsonius nycteridonis Strasser, 1976 Figs 53E, 54I Material examined Lectotype (here designated) GREECE – Macedonia • ♂; Nycteridon Cave, village Petralona; 10 Oct. 1974; P. Beron and V. Beškov leg.; “ Telsonius n. g. nycter. n. sp. Holotype ♂; Grotte ‘Spilja nycteridon’, v. Petralona, distr. Salonique, Grèce du Nord; 10.10.1974; P. Beron, V. Beškov leg.”; NMNHS 10810 (alcohol material, body in four pieces), NMNHS 10810 a (microscopic slide labeled as “ Holotypus ”, with gnathochilarium, leg-pairs 1 and 2, legs 3 and 4), NMNHS 10810 b (microscopic slide labeled as “ Holotypus ”, with right gonopods, part of body ring 7 and one antenna). Remarks On the labels of the vial and on the two microscopic slides of the lectotype male of Telsonius nycteridonis, Strasser clearly indicated “ holotypus ”, but he did not designate a holotype in the original description of the species (Strasser 1976). According to ICZN 72.4.7: “The mere citation of “Type” or equivalent expression, in a published work other than that in which the nominal species-group taxon is established, or in an unpublished catalogue of a museum, or on a label, is not necessarily evidence that a specimen is or is fixed as any of the kinds of types referred to in this Chapter”. The designation of the holotype and paratypes is only valid if it appears in the original description of the species. Since this is not the case with Telsonius nycteridonis, the type male of this species in NMNHS is to be considered as a syntype which we herewith designate as the lectotype to fix the taxonomy of this species.Published as part of Antić, Dragan Ž. & Reip, Hans S., 2020, The millipede genus Leucogeorgia Verhoeff, 1930 in the Caucasus, with descriptions of eleven new species, erection of a new monotypic genus and notes on the tribe Leucogeorgiini (Diplopoda: Julida: Julidae), pp. 1-106 in European Journal of Taxonomy 713 on pages 90-93, DOI: 10.5852/ejt.2020.713, http://zenodo.org/record/402075
Three-terminal mid-IR tunable emitters based on Wannier-stark ladder transitions in semiconductor superlattices
No full textEarly Cretaceous platforms of southeastern France, Venezuela and Resolution Guyot : sequence stratigraphy, correlation and evolution
No full textArnaud Hubert, Flood Peter G., Strasser A. Early Cretaceous platforms of southeastern France, Venezuela and Resolution Guyot : sequence stratigraphy, correlation and evolution. In: Géologie Méditerranéenne. Tome 21, numéro 3-4, 1994. Perimediterranean carbonate platforms. First International Meeting. Marseille – France (5-8 septembre 1994) sous la direction de Jean-Pierre Masse. pp. 9-12
Dimensions of anthropomorphism: from humanness to humanlikeness
No full textZlotowski J, Strasser E, Bartneck C. Dimensions of anthropomorphism: from humanness to humanlikeness. In: Sagerer G, ed. Proceedings of the 9th ACM/IEEE Conference on Human-Robot Interaction (HRI 2014). New York, USA: ACM; 2014: 66-73
Influence of the band-offset on the electronic temperature of GaAs/Al(Ga)As superlattice quantum cascade lasers
No full textInfluence of the band-offset on the electronic temperature of GaAs/Al(Ga)As superlattice quantum cascade lasers
No full textUsing microprobe photoluminescence we measured the electronic and
lattice temperatures in operating quantum cascade lasers having similar
chirped-superlattice active regions but different (GaAs/AlAs or
GaAs/Al0.45Ga0.55As) conduction band discontinuities. Our results
demonstrate the establishment of a thermalized hot-electron distribution.
Coupling between the electronic ensemble and the lattice increases with the
band-offset and influences the optical characteristics of the devices
Die neue Arbeitsgesellschaft als ICH-AG
No full textDiewald M. Die neue Arbeitsgesellschaft als ICH-AG. In: Nollmann G, Strasser H, eds. Das individualisierte ich in der modernen Gesellschaft. Frankfurt am Main, New York: Campus; 2004: 110-129
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