210 research outputs found
Calomyscus urartensis Vorontsov and Kartavseva 1979
No full text<p> <i>Calomyscus urartensis</i> Vorontsov and Kartavseva, 1979. Zool. Zh., 58: 1218.</p> <p>TYPE LOCALITY: Azerbaidzhan, Nakhichevansk., Alindzhachai River, 7 km N Dzhul'ta.</p> <p>DISTRIBUTION: Extreme S Transcaucasus (Azerbaidzhan), far NW Iran (Azarbaijan Prov.; series in the Field Museum of Natural History).</p> <p> COMMENTS: C. <i>urartensis</i> is chromosomally and morphologically closely similar to C. <i>mystax</i> (Vorontsov et al., 1979, and our study of material in the Field Museum).</p>Published as part of <i>Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press</i> on page 536, DOI: <a href="http://zenodo.org/record/7353098">10.5281/zenodo.7353098</a>
Calomyscinae Vorontsov and Potapova 1979
No full text<p>Subfamily Calomyscinae Vorontsov and Potapova, 1979. Zool. Zh., 58:1393.</p> <p> COMMENTS: Although earlier authors associated it with New World sigmodontines, Vorontsov and Potapova (1979) recognized <i>Calomyscus's</i> combination of distinctive features by setting it apart as a tribe in the subfamily Cricetinae of the family Cricetidae. Pavlinov (1980c) kept it with sigmodontines, and Agusti (1989:387) summarily regarded it as the only living member of the Myocricetodontinae. Carleton and Musser (1984:313) discussed the different taxonomic assignments of <i>Calomyscus,</i> its characteristics that did not fit with Old World hamsters (Cricetinae), and the dental similarities between <i>Calomyscus</i> and Miocene <i>Democricetodon,</i> and remarked that <i>" Calomyscus</i> could be justifiably classified among the cricetodontines, a group hitherto supposed extinct."</p>Published as part of <i>Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press</i> on page 535, DOI: <a href="http://zenodo.org/record/7353098">10.5281/zenodo.7353098</a>
FIGURE 2 in The first Proctotrupidae (Hymenoptera) in Burmese amber, with description of a new genus and species
No full textFIGURE 2. Cresogmus grimaldii Rasnitsyn & Kolyada gen. et sp. nov., holotype. A, Wings. B, C, Head, frontal view (C: confocal scan). D, E, Lateral view of mesosoma showing pronotum with netrion. F, Head, ventral view. G, Maxillary palp. H, Ovipositor and hind tarsus. J, Fore tarsus. K, Mid and hind tibiae and tarsi. Scale bars = 0.1 mm.Published as part of RASNITSYN, ALEXANDR P., KOLYADA, VIKTOR A., VORONTSOV, DMITRY D. & ÖHM-KÜHNLE, CHRISTOPH, 2022, The first Proctotrupidae (Hymenoptera) in Burmese amber, with description of a new genus and species, pp. 445-451 in Palaeoentomology 5 (5) on page 447, DOI: 10.11646/palaeoentomology.5.5.5, http://zenodo.org/record/733370
Piezoelectric properties of a novel ZTS-19/clay composite
No full textResults on the piezoelectric performance of the ZTS-19 ferroelectric ceramic/clay composite are reported. In this composite, clay is regarded as an elastically soft piezo-passive component that strongly influences effective electromechanical properties and related parameters of the composite even at small volume fractions of clay mcl. Changes in the microgeometry of the composite are discussed, and its piezoelectric performance is interpreted in terms of models of the two- and three-component composites based on poled ferroelectric ceramics. Results of modeling are compared to experimental data. The studied composite is of interest as a piezoelectric material with relatively high piezoelectric sensitivity (g*33 > 50 mV · m/N), large anisotropy of the piezoelectric coefficients d*3j (5.4 < d*33/|d*31| < 8.2 at 0.01 ≤ mcl ≤ 0.05), and with considerable variation of the sound velocity vs
Trends in Developing Corporate Management in Companies with State Participation in the Russian Federation
No full textThe article discusses acute issues of shaping the system of corporate management within the frames of state-owned companies. The author studies characteristics that group state-owned corporations by similar features and identifies key goals of corporate management. The list of all types of stakeholders is provided and interests of each group being pursued within corporate management are mentioned. Trends in the development of the state-owned corporations’ sector are analyzed and the level of their commercial activity efficiency is investigated. Theoretical aspects of corporate management and stakeholders are discussed and their impact on the efficiency of company with state capital work is demonstrated. Based on Russian and international practice the author came to the conclusion that inadequate mechanism of corporate management could cause different risks , the major one is a conflict of interests of stakeholders. Principle risks in the system of corporate management observed in Russian economy are enumerated. In order to improve the process of managing corporate risks in companies with state participation the author advanced a number of changes, which should be made in the Russian corporate legislation. Recommendations aimed at resolving the problem of inefficient system of corporate management are put forward. Special attention is paid to the issue of professionalism and independence of the Board of Directors in state-owned companies
Salpingotus pallidus Vorontsov & Shenbrot 1984
No full text5. Pallid Pygmy Jerboa Salpingotus pallidus French: Gerboise pale / German: Blasse Dreizehenzwergspringmaus / Spanish: Jerbo pigmeo palido Other common names: Pale Pygmy Jerboa; Pale Pygmy Aral Jerboa (pallidus), Pale Pygmy Balkhash Jerboa (s/udskii) Taxonomy. Salpingotus pallidus Vorontsov & Shenbrot, 1984, Bolshyye Barsuki Sands near Chelkar, Aktybinsk Region, Kazakhstan. Salpingotus pallidus is in the subgenus Prosalpingotus. Two subspecies recognized. Subspecies and Distribution. S.p.pallidusVorontzov&Shenbrot,1984—CKazakhstan(NofAralSeaareainSEAktobe,WKaraganda,andKyzylordaregions). S. p. sludskii Shenbrot & Mazin, 1989 — SE Kazakhstan (S of Lake Balkhash in N Almaty Region). Descriptive notes. Head—body 53-61 mm, tail 96-113 mm, ear 8-10 mm, hindfoot 21-24 mm; weight 7-13 g. The Pallid Pygmy Jerboa is very small; secondary sexual dimorphism is expressed only in length of terminal tuft of tail, which is 2-5-3 times longer in males than females. Condylo-basal lengths of skulls are 16-3-18 mm, mastoid breadths are 14-9-16-8 mm, and maxillary tooth row lengths are 3-1-3-7 mm. Head and dorsum are yellow-gray, with scattered dark gray; sides and ventral pelage are pure white. Tail is fatty, with short black terminal tuft; fat deposits in tail are greatest in the anterior one-third and gradually become thinner toward tip. Hindfeet have three toes, covered below with brushes of white hairs; toes do not have conic calluses at their bases. Ears are short and tubiform. Auditory bullae are greatly inflated and strongly project from under braincase laterally and caudally. Mastoid cavity is large and completely subdivided into three sections by septum. In volume, mastoid cavity is about twice as large as tympanic cavity. Front surfaces of incisors are yellow. P! is present and slightly smaller in diameter than M”. Molars are low-crowned, with tuberculous surfaces; crown heights of unworn molars are c.75% of their lengths. Glans penis is small, thin, elongated, cone-shaped, and not subdivided into lobes, with surface covered by small single-vertex, backward-directed aciculae not differentiated in size. Os penis (baculum) is rudimentary and rachis-like; its length is about equal to one-tenth of length of glans penis. Chromosomal complement has 2n = 46 and FN probably 90. Habitat. Flat or low hilly stabilized sands in desert zones, with grass (Poaceae)sagebrush (Artemisia, Asteraceae) vegetation. In the Aral Sea region, dominant vegetation is A. arenaria and Agropyron sibiricum (Poaceae). In Lake Balkhash area, dominant vegetation is A. arenaria, Furotia ceratoides (Amaranthaceae), and Carex physodes (Cyperaceae). Food and Feeding. Diets of Pallid Pygmy Jerboas contain seeds and insects; seeds are eaten more often in summer and insects more often in spring. Breeding. Pregnant Pallid PygmyJerboas were recorded in May-July. Females produce one and, in some cases, two litters per year. Litters have 2-5 young. Activity patterns. The Pallid Pygmy Jerboa is nocturnal. Activity starts just after sunset and was recorded only in the first one-half of night in early spring and all night in late spring and summer. Hibernation ends in the middle of April; dates when hibernation begins are not known. Movements, Home range and Social organization. Home ranges of breeding female Pallid Pygmy Jerboas are c.0-6 ha. In captivity, social interactions are aggressive, with active fighting. Summer burrows of males have 2-3 entrances and one nest chamber at a depth of ¢.8 cm. Burrows of breeding females have up to four entrances, one nest chamber at depths of ¢.16 cm and 2-8 additional chambers. Status and Conservation. Classified as Data Deficient on The IUCN Red List. Bibliography. Shenbrot et al. (2008).Published as part of Don E. Wilson, Russell A. Mittermeier & Thomas E. Lacher, Jr, 2017, Dipodidae, pp. 81-100 in Handbook of the Mammals of the World – Volume 7 Rodents II, Barcelona :Lynx Edicions on page 84, DOI: 10.5281/zenodo.659172
Salpingotus heptnen Vorontsov & Smirnov 1969
No full text4. Heptner’s Pygmy Jerboa Salpingotus heptnen French: Gerboise de Heptner / German: Heptner-Dreizehenzwergspringmaus / Spanish: Jerbo pigmeo de Heptner Taxonomy. Salpingotus heptneri Vorontsov & Smirnov, 1969, 8 km NE Kok-Tobe, Karakalpakiya, Uzbekistan. Salpingotus heptneri is in the subgenus Prosalpingotus. Monotypic. Distribution. N & NE Kyzylkum Desert in Uzbekistan (NE Karakalpakstan) and Kazakhstan (S Kyzylorda Region). Descriptive notes. Head—body 40-58 mm, tail 85-101 mm, ear 9-11 mm, hindfoot 20-22 mm; weight 7-13 g. Heptner’s Pygmy Jerboa is very small; secondary sexual dimorphism is expressed only in length of terminal tuft of tail, which is twice as long on males than females. Condylo-basal lengths of skulls are 17-18-2 mm, mastoid breadths are 16-3—17-6 mm, and maxillary tooth row lengths are 3-2-3-4 mm. Head and dorsum are sandy gray, with scattered dark gray; sides and ventral pelage are pure white. Tail is fatty, with short black terminal tuft; fat deposits in tail are greatest in anterior one-third and gradually become thinner toward tip. Hindfeet have three toes, covered below with brushes of white hairs; toes do not have conic calluses at their bases. Ears are short and tubiform. Auditory bullae are greatly inflated and strongly project from under braincase laterally and caudally. Mastoid cavity is large and completely subdivided into three sections by septum. In volume, mastoid cavity is about twice as large as tympanic cavity. Front surfaces of incisorsare yellow. P! is present and slightly smaller in diameter than M’. Molars are low-crowned, with tuberculous surfaces; crown heights of unworn molars are 75% of their lengths. Glans penisis small, thin, elongated, cone-shaped, and not subdivided into lobes, with surface covered by extremely small plaques not differentiated in size. Os penis (baculum) is rudimentary and rachis-like; its length is about equal to onetenth of the length of glans penis. Chromosomal complement has 2n = 46 and FN probably 90. Habitat. Thin sand sediments on clay alluvial plains in desert zones. Food and Feeding. Diets of Heptner’s Pygmy Jerboas contain about equal amounts of seeds and insects. Breeding. Pregnant Heptner’s Pygmy Jerboas were recorded in April-June. Females produce two litters per year. Litters have 2-4 young. Activity patterns. Heptner’s PygmyJerboa is strongly nocturnal. Activity starts one hour after sunset and was recorded only in the first one-half of the night. Hibernation starts in September and ends in the end of March. Movements, Home range and Social organization. In captivity, Heptner’s Pygmy Jerboas are socially aggressive, with active fighting. Status and Conservation. Classified as Data Deficient on The IUCN Red Lust. Bibliography. Shenbrot et al. (2008).Published as part of Don E. Wilson, Russell A. Mittermeier & Thomas E. Lacher, Jr, 2017, Dipodidae, pp. 81-100 in Handbook of the Mammals of the World – Volume 7 Rodents II, Barcelona :Lynx Edicions on page 84, DOI: 10.5281/zenodo.659172
Calomyscus mystax Kashkarov 1925
No full text<p> <i>Calomyscus mystax</i> Kashkarov, 1925. Trans. Turkestansk. Nauch. ob-va pri Sredniaziatsk. Univ. (Tashkent), 2:43.</p> <p>TYPE LOCALITY: Turkmenistan, Great Balkhan Mtns, Bashi-Mugur.</p> <p>DISTRIBUTION: Great and Little Balkhan and Kopet Dag Mtns and Badkhiz desert, S Turkmenia, NC (Mazanderan Prov.) and NE (Khorassan Prov.) Iran, and NW Afghanistan.</p> <p> SYNONYMS: <i>elburzensis.</i></p> <p> COMMENTS: See Vorontsov et al. (1979) for status of <i>elburzensis.</i> See comments under C. <i>urartensis.</i> The Afghanistan distribution is based upon specimens in the Field Museum of Natural History; we relied on other series from that Institution and records in Vorontsov et al. (1979) for the Iranian segment.</p>Published as part of <i>Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press</i> on page 536, DOI: <a href="http://zenodo.org/record/7353098">10.5281/zenodo.7353098</a>
Calomyscus bailwardi Thomas 1905
No full text<p> <i>Calomyscus bailwardi</i> Thomas, 1905. Abstr. Proc. Zool. Soc. Lond., 1905(24):23.</p> <p>TYPE LOCALITY: Iran, Khuzistan, 120 km SE Ahwaz, Mala-i-Mir (= Jzeh).</p> <p>DISTRIBUTION: Iran.</p> <p> SYNONYMS: <i>grandis.</i></p> <p> COMMENTS: True <i>bailwardi</i> has been recorded only from Iran; its range as usually described in the literature (Corbet, 1978c) represents other species of <i>Calomyscus</i> (Vorontsov et al., 1979). Our distributional sketch is documented by specimens from C Iran (in the Field Museum of Natural History) and records from SW Iran (Vorontsov et al., 1979). Schütter and Setzer (1973) described <i>grandis</i> as a subspecies of C. <i>bailwardi.</i></p>Published as part of <i>Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press</i> on page 535, DOI: <a href="http://zenodo.org/record/7353098">10.5281/zenodo.7353098</a>
Calomyscus hotsoni Thomas 1920
No full text<p> <i>Calomyscus hotsoni</i> Thomas, 1920. J. Bombay Nat. Hist. Soc., 26:938.</p> <p>TYPE LOCALITY: Pakistan, Baluchistan, Gwambuk Kaul, 50 km SW Panjgur (26°30'N, 63°50'E).</p> <p>DISTRIBUTION: Known only from vicinity of type locality.</p> <p> COMMENTS: In body size, the smallest of all the species of <i>Calomyscus</i> (Vorontsov et al., 1979).</p>Published as part of <i>Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press</i> on page 536, DOI: <a href="http://zenodo.org/record/7353098">10.5281/zenodo.7353098</a>
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