115,470 research outputs found
Conférence de M. Michael V. Dmitriev
No full textDmitriev Mikhael V. Conférence de M. Michael V. Dmitriev. In: École pratique des hautes études, Section des sciences religieuses. Annuaire. Tome 110, 2001-2002. 2001. pp. 441-445
Information-measuring complex and database of mid-latitude Borok geophysical observatory
No full textErasmoneura latiloba Dmitriev 2008, sp. n.
No full textErasmoneura latiloba sp. n. (Figs. 2, 3) Description: Body size (male, female): 2.4–2.5 mm. Coloration (male, female): Dorsum entirely reddish brownish, without color pattern. Anteclypeus dark brown. Thoracic venter entirely dark brown. Head (male, female): Crown fore margin strongly produced and angulate medially. Abdomen (male): 2S abdominal apodemes large, broad, reaching 3S posterior margin. Genitalia (male): Pygofer lobe rounded; dorsal appendage with distinct basal suture, but not movably articulated, simple, not extended beyond pygofer apex, straight in dorsal view, curved downward in lateral view. Style apex threepointed, second point very short, tooth like; third point elongate, about as long or longer than distance between other two points; angle between basal and third points less than 90°. Aedeagus with preatrium longer than shaft; shaft curved ventrally, broad in lateral view; depressed in crossection, with large lateral lobes, with small dorsal distal lobe; ventral processes absent; distal processes long, apical, slender. Type locality: Holotype ♂, USA, South Carolina, Aiken Co., Aiken, 12 V 1957 (J. R.U.), (CNC). Studied material: Paratypes: 3 ♂, 7 ♀, same data as holotype, (CNC); 1♂, 1♀, same data, (INHS). Host plant: Unknown. Note: The species name refers to the broad lobes on the sides of the aedeagal shaft. Like E. rubricata Van Duzee and E. margaritae Dmitriev & Dietrich, this species has a broad and depressed aedeagal shaft. It differs in longer distal processes of the aedeagus and smaller size.Published as part of Dmitriev, D. A., 2008, New and little known species of Erasmoneura Young (Hemiptera: Cicadellidae: Typhlocybinae), pp. 65-68 in Zootaxa 1851 (1) on page 66, DOI: 10.11646/zootaxa.1851.1.6, http://zenodo.org/record/513307
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
Kusala (Scodela) directa Cao & Dmitriev & Zhang 2018, sp. nov.
No full textKusala (Scodela) directa sp. nov. (Figs 2, 5 e–h) Description. Ground color yellowish-brown, lower 2/3 of face darker. Crown fore margin rounded, anteclypeus rectangular. (Figs 5 e–h) Male 2S abdominal apodemes (Fig. 2a) extended to middle of sternite IV. Anal tube appendage (Figs 2b, c) relatively short. Subgenital plate (Fig. 2e) very broad basally. Apical part of style (Fig. 2f) straight, subapical extension slightly curved basad. Connective (Fig. 2g) lamellate, manubrium very broad. Aedeagal shaft (Figs 2h, i) relatively broad in lateral view, curved doro-cephalad, dorso-distal margin slightly expanded and serrated distally; dorsal apodeme large, Y-shaped in caudal view; preatrium short; gonopore on ventral margin. Measurement. Male length 2.90mm. Material examined. Holotype: ♂, CHINA, Yunnan Prov., Yingjiang, Xima, 24°48'18''N, 97°45'03''E, 1828.9m, 4 v 2012, coll. Yanghui Cao; paratype: 1♂, same data as holotype. Etymology. The new specific epithet is derived from Latin adjective “ directus ”, which means “straight”, referring to the straight apical part of the style.Published as part of Cao, Yanghui, Dmitriev, Dmitry A. & Zhang, Yalin, 2018, New species of the leafhopper genera Kusala Dworakowska and Diomma Motschulsky (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) with description of a new subgenus, pp. 263-272 in Zootaxa 4514 (2) on pages 265-268, DOI: 10.11646/zootaxa.4514.2.9, http://zenodo.org/record/260799
Kusala (Scodela) sinuata Cao & Dmitriev & Zhang 2018, sp. nov.
No full textKusala (Scodela) sinuata sp. nov. (Figs 3, 5 i–l) Description. Ground color orange-brown, face brown. Crown fore margin rounded, anteclypeus ovoid. (Figs 5 i–l) Male 2S abdominal apodemes (Fig. 3a) surpassing hind margin of sternite IV. Anal tube appendage (Figs 3b, c) long. Subgenital plate (Fig. 3e) narrow. Apical part of style (Fig. 3f) sinuate, subapical extension rectangular. Connective (Fig. 3g) lamellate, manubrium very broad. Aedeagal shaft (Figs 3h, i) directed dorso-caudad, with a small protrusion on dorsal margin subapically, apex concave in caudal view; dorsal apodeme large, Y-shaped in caudal view; preatrium relatively long. Diagnosis. The new species is similar to K. (S.) directa sp. nov., but the subgenital plate is narrower, the apical part of the style is sinuate, the aedeagal shaft is narrower, directed dorso-caudad and has a small protrusion on the dorsal margin subapically, and the preatrium is longer. Measurement. Male length 2.60mm. Material examined. Holotype: ♂, CHINA, Yunnan Prov., Yingjiang, Xima, 24°48'18''N, 97°45'03''E, 1828.9m, 4 v 2012, coll. Yanghui Cao. Etymology. The new specific epithet is derived from Latin verb “ sinuatus ”, which means “bend”, referring to the sinuate apical part of the style.Published as part of Cao, Yanghui, Dmitriev, Dmitry A. & Zhang, Yalin, 2018, New species of the leafhopper genera Kusala Dworakowska and Diomma Motschulsky (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) with description of a new subgenus, pp. 263-272 in Zootaxa 4514 (2) on page 269, DOI: 10.11646/zootaxa.4514.2.9, http://zenodo.org/record/260799
Hagiographie et histoire monastique
No full textLemaître Jean-Loup, Dmitriev Mikhael V. Hagiographie et histoire monastique. In: École pratique des hautes études. Section des sciences historiques et philologiques. Livret-Annuaire 21. 2005-2006. 2007. pp. 233-244
Russian-German cooperation in education and science in the sope of polar and marine sciences at St. Petersburg State University (in Russian)
No full textauthor-bios-SRD-19-0063.R1 – Supplemental material for The Network Structure of Police Misconduct
No full textSupplemental material, author-bios-SRD-19-0063.R1 for The Network Structure of Police Misconduct by George Wood, Daria Roithmayr and Andrew V. Papachristos in Socius</p
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