2,946 research outputs found
Neozygina expanda Dietrich & Dmitriev 2007, n. sp.
No full textNeozygina expanda n. sp. (Figs. 1V, 4J–K) Diagnosis. Length of male 2.6 mm, female 3.1 mm. Closely resembling N. argentiniensis, but differing as follows: pygofer with dorsal appendage extended to apex; aedeagal shaft (Figs. 4J, K) in lateral view more strongly divergent from dorsal apodeme and with posterior margin evenly curved, processes formed by bifid apex strongly expanded and convergent distally. Material examined. Holotype male, ARGENTINA: La Rioja, Dept. Famatina, 10 km N Famatina, Hwy. 40, Sierra de Toro Negro, 4,450ft., 28.9591°S, 67.4705°W, 15/ 20 October 1997 (M.E. Irwin, F. D. Parker, S. Roig, Malaise trap, MEI 97-35) [INHS]. Paratype, 1 female, same data [INHS]. Note. The specific name refers to the expanded aedeagal apex, which distinguishes this species from other South American Neozygina.Published as part of Dietrich, C. H. & Dmitriev, D. A., 2007, Revision of the New World leafhopper genus Neozygina Dietrich & Dmitriev (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini), pp. 27-42 in Zootaxa 1475 on page 4
Neozygina retrorsa Dietrich & Dmitriev 2007, n. sp.
No full textNeozygina retrorsa n. sp. (Figs. 1X, 4N–P) Diagnosis. Length of male 2.9 mm, female 3.1 mm. Closely resembling N. argentiniensis, but differing as follows: male pygofer (Fig. 4N) with ventral spine more elongate, strongly curved dorsad and only slightly mesad; aedeagus (Figs. 4O, P) without basal processes, shaft very narrowly U-shaped in lateral view, apex in posterior view with pair of short forcipate distal processes and pair of retrorse lateral preapical spines, sinuate in lateral view. Material examined. Holotype male, ECUADOR, Orellana, Transect Ent. 1km S Onkonegare Camp, Reserva Etnica Waorani, 00°39'10"S, 076°26'00"W, 12 February 1999 (T. L. Erwin, et al., fogging terra firme forest, lot#1023) [USNM]. Paratypes: 1 male, same data except lot#1027, 12 February 1999; 1 male, same data except lot#1560, 21 June 1996; 2 females, same data except lot#1440, 7 February 1996 [USNM, INHS]. Note. This species differs from other South American Neozygina in having the aedeagus without paired basal processes and a distal pair of retrorse spines, upon which the specific name is based.Published as part of Dietrich, C. H. & Dmitriev, D. A., 2007, Revision of the New World leafhopper genus Neozygina Dietrich & Dmitriev (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini), pp. 27-42 in Zootaxa 1475 on page 4
Neozygina forcipata Dietrich & Dmitriev 2007, n. sp.
No full text<i>Neozygina forcipata</i> n. sp. <p>(Figs. 1W, 4L–M)</p> <p> <b>Diagnosis.</b> Length of male 2.5 mm, female 2.6 mm. Closely resembling <i>N. expanda,</i> but differing as follows: pygofer with dorsal appendage extended half way to apex of lobe; aedeagal shaft with distal processes formed by bifid apex much smaller and narrower; dorsal margin with pair of small teeth near base.</p> <p> <b>Material examined.</b> Holotype male, ARGENTINA: La Rioja, Dept. Rosario Peñaloza, east base Sierra Argañaraz, 2,000ft., 31.2210°S, 66.7276°W, 11 October 1997 (M.E. Irwin, F. D. Parker, S. Roig, Malaise trap in wet spot in wash, MEI 97-26) [INHS]. Paratype: 1 female, same data [INHS].</p> <p> <b>Note.</b> This species closely resembles <i>N. expanda</i> but has the distal projections of the aedeagus much more slender. The specific name refers to the forcipate aedeagal apex.</p>Published as part of <i>Dietrich, C. H. & Dmitriev, D. A., 2007, Revision of the New World leafhopper genus Neozygina Dietrich & Dmitriev (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini), pp. 27-42 in Zootaxa 1475</i> on page 4
Information-measuring complex and database of mid-latitude Borok geophysical observatory
No full textNeozygina asymmetrica Dietrich & Dmitriev 2007, n. sp.
No full textNeozygina asymmetrica n. sp. (Figs. 1U, 4G–I) Diagnosis. Length of male 3.4 mm. Ground color stramineous, heavily marked with brown; dorsum including crown and mesonotum mostly brown; head with genae, median area of frontoclypeus, and lateral margin of crown pale; forewing brown, veins pale. Male pygofer (Fig. 4G) with dorsal appendage arising near base, nearly straight, tapered, apex bifid, not extended to apex of pygofer; ventral appendage arising preapically, short, extended dorsomesad. Aedeagus (Figs. 4H, I) with preatrium absent; shaft tubular, in lateral view sinuate; paired subbasal processes extended nearly to apex, approximately paralleling shaft in posterior view, divergent from shaft in lateral view; distal processes arising laterad of gonopore, moderately short, slender, extended ventrolaterad; apex emarginate, with median dorsal spine extended dorsolaterad to left; gonopore apical. Material examined. Holotype male, PERU: Madre de Dios, Rio Tambopata Res., 30 km (air) SW Pto. Maldonado, 290m, 12°50'S, 069°17'W, 14 September 1984 (Smithsonian Institution Canopy Fogging Project, T. E. Erwin, et al., 01/02/54) [USNM]. Notes. This species differs from other South American Neozygina in having the dorsal pygofer appendage bifid and the aedeagus with an asymmetrical unpaired distal spine. The specific name refers to the asymmetrical aedeagus.Published as part of Dietrich, C. H. & Dmitriev, D. A., 2007, Revision of the New World leafhopper genus Neozygina Dietrich & Dmitriev (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini), pp. 27-42 in Zootaxa 1475 on page 4
Neozygina zapatai Dietrich & Dmitriev 2007, n. sp.
No full text<i>Neozygina zapatai</i> n. sp. <p>(Figs. 1R, 3X–Z)</p> <p> <b>Diagnosis.</b> Length of male 2.7 mm. Overall color pale yellow, apex of anteclypeus, mesonotal triangles, and abdominal terga brown; crown spots relatively small. Male pygofer and genitalia as described for <i>N. sordida</i> except aedeagus with gonoduct in lateral view extended diagonally across shaft.</p> <p> <b>Material examined.</b> Holotype male, MEXICO: Jalisco, ca. La Huerta, 480m, 19°27'47"N 104°39'13"W, 16 Oct 2001 (S. H. McKamey, <i>et al.</i>, fogging 3- FH) [INHS]. Paratypes: 3 males, same data except fogging 2, 2-BL, 2-FL [INHS].</p> <p> <b>Note.</b> This species resembles <i>N. quadricornis</i> and <i>N. sordida</i> in having a similarly bifurcated dorsal pygofer appendage, but differs in its smaller size, paler coloration, and in the structure of the aedeagus, which has the gonoduct extended diagonally across the shaft rather than parallel to the posterior margin. This species is named in memory of Emilano Zapata Salazar (1879–1919), hero of the Mexican Revolution.</p>Published as part of <i>Dietrich, C. H. & Dmitriev, D. A., 2007, Revision of the New World leafhopper genus Neozygina Dietrich & Dmitriev (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini), pp. 27-42 in Zootaxa 1475</i> on pages 38-3
Etmaria brevis Cao & Dmitriev 2020, sp. nov.
No full text2. Etmaria brevis Cao & Dmitriev sp. nov. Figs 3, 18 i–l Description. Ground color light tawny, dorsum infuscated (specimen preserved in ethanol before examined), eyes grey, frontoclypeal area and anteclypeus tawny. Crown fore margin parallel to hind margin, coronal suture distinct; anteclypeus relatively broad. Anal tube appendage broad, extended from apex of anal tube. Pygofer with oblique boundary between basal and distal lobes; ventral appendage tubular, curved inwards, not surpassing hind margin of lobe, without rigid setae at base. Subgenital plate with about 3 macrosetae. Style with apical part slim and long, curved outwards in dorsal view. Connective with manubrium long and relatively broad, widened apically, margin of central lobe straight. Aedeagal shaft long, curved dorso-cephalad, atrium long but narrow in lateral view, broadened in caudal view, with serrated lamellae on dorso-lateral edges near base; dorsal apodeme rudimentary; paired preatrial processes short and straight, shifted to base of shaft, near each other. Measurement. Male length 3.10 mm. Material examined. Holotype: ♂, THAILAND, Prachuab Khiri Khan, Khao Sam Roi Yot NP, 200m /s of Checkpoint 1, 12°12.789'N, 99°58.662‘E, 19–26 x 2008, Malaise trap, coll. Yai & Amnad. [QSBG]. Etymology. The new specific epithet is derived from the Latin adjective “ brevis ” which means short, small, referring to the short preatrial processes. Diagnosis. The new species is similar to E. decembris (Dworakowska), but the anal tube appendage is broader and curved, the pygofer ventral appendage is curved, the style has a much longer apex, and the aedeagal shaft is curved dorso-cephalad with the dorso-lateral edges serrated and lamelliform.Published as part of Cao, Yanghui, Dmitriev, Dmitry A., Dietrich, Christopher H. & Zhang, Yalin, 2020, Review of the leafhopper genus Thaia Ghauri and related genera (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini), pp. 331-367 in Zootaxa 4868 (3) on pages 337-339, DOI: 10.11646/zootaxa.4868.3.2, http://zenodo.org/record/441776
Elastic behavior and high pressure-induced phase transition in chabazite: new data from a sample from Nova Scotia
No full textRecently, the high pressure (HP) behavior of a natural chabazite from Vallerano [1] (VALL), and on the synthetic
phases SAPO-34 [1] and ALPO-34 [2], was investigated in the frame of a wider project aimed at understanding
the role of the framework/extraframework content on the compressibility of CHA-type porous materials.
In this work, further structural information is obtained studying the response to HP of another natural chabazite
sample from Nova Scotia (Canada) (NS) (s.g. R-3mR [3]), characterized by a different chemical composition with
respect to VALL. The study was performed by means of in situ synchrotron X-ray powder diffraction (XRPD) and
silicone oil as non-penetrating P-transmitting medium. XRPD experiments were performed in DAC at the BM01
beamline at ESRF (Grenoble, France) with a fixed =0.7355 Å. Powder patterns were collected from Pambup to 8.6
GPa and upon decompression. All the features of the Pamb pattern and the unit cell parameters are well recovered
upon P release. Below 2.1 GPa, a and cell parameters slightly decrease and increase respectively with a resulting
volume reduction of 3.6 %. Above 2.1 GPa, a transition to a triclinic P-1 pseudo-rhombohedral phase is observed.
The rhombohedral to triclinic phase transition is accompanied by an abrupt decrease in the unit cell parameters and
in the unit cell volume (V=-4.0%). Between 2.5 and 5.9 GPa, the triclinic/pseudo-rhombohedral cell parameters
decrease regularly and the unit cell volume variation (V=-3.0%) indicates a lower compressibility with respect to
that observed before the transition. In the highest P regime (5.9-7.2 GPa), a further slope change, with an increase
in compressibility, is observed. As a whole, V between Pamb and 7.2 GPa is -12.6%. The elastic parameters,
calculated with a second order BM-EoS, are V0 = 826 (1) Å3, K0 = 54(3) GPa and V0 = 784(2) Å3, K0 = 91(5)
GPa, for the rhombohedral and triclinic phase, respectively.
Preliminary results from Rietveld refinements up to about 1 GPa, suggest that the deformation mechanism acting
in the low-P regime is a cooperative tilting of the tetrahedra belonging to the double 6-ring – resulting in a decrease
of its thickness – accompanied by a simultaneous di-trigonalization of the two 6-rings. A similar mechanism was
previously observed during compression of levyne [4].
The HP-induced cell volume contraction of NS (12.6 %) is higher than that of VALL (10.3%) in the same P range.
This is congruent with the lower content in large extraframework potassium cations of NS, which contribute to
sustain the porous structure in VALL.
[1] L. Leardini, S. Quartieri, G. Vezzalini, Micropor. Mesopor. Mater. 127 (2010) 219-227
[2] L. Leardini, S. Quartieri, A. Martucci, G. Vezzalini, V. Dmitriev, Z. Kristallogr. (2012), doi:
10.1524/zkri.2012.1477.
[3] A. F. Gualtieri, E. Passaglia, Eur. J. Mineral. 18 (2006) 351–359.
[4] G. D. Gatta, P. Comodi, P. F. Zanazzi, T. F. Ballaran, Am. Miner. 90 (2005) 645-652
Herbert, Ulrich: Wer waren die Nationalsozialisten? (Timofey Dmitriev)
No full textHerbert, Ulrich: Wer waren die Nationalsozialisten? ― München: C. H. Beck, 2021. ― 304 S. ― ISBN: 978-3-406-76898-9Герберт, Ульрих: Кем были национал-социалисты? ― Мюнхен: Бек, 2021. ― 304 S. ― ISBN: 978-3-406-76898-
Schluchter, Wolfgang: Mit Max Weber (Timofey Dmitriev)
No full textSchluchter, Wolfgang: Mit Max Weber. ― Tübingen: Mohr Siebeck, 2020. ― 290 S. ― ISBN 978-3-16-159018-4Шлюхтер, Вольфганг: С Максом Вебером. ― Тюбинген: Мор Зибек, 2020. ― 290 с. ― ISBN 978-3-16-159018-
- …
