Amur Scientific Center

The genus Trypoxylus Minck, 1920 and the species T. dichotomus (Linnaeus, 1771) are recorded for Russia for the first time. The material was collected in the southwestern part of Primorskii krai and in the southern part of Kunashir Island. The distribution range of the species is considered in East Asia and in the border areas with Russia. Prospects of further range expansion of T. dichotomus are evaluated for the southern Far East of Russia.

Distribution of noble metals, rare metals and rare earth elements in the Paleocene and Lower-Middle Miocene coals of Zeya-Bureya sedimentary basin was analyzed. Reconstruction of the basin formation in the Mesozoic and Cenozoic was performed with detailed paleogeographic analysis of the Cenozoic coal-bearing sequences from the position of geodynamic features of the adjacent regions development. Geological events at the turn of the Cretaceous and Paleogene are considered. Comprehensive analysis of the metal content in the basin frame carried out.
 We described conditions of migration and localization of trace elements. Given conditions arose mainly in the process of geodynamics developed on the northwestern flank of the Zeya-Bureya basin including the static orogens in the Paleocene — Miocene where the sedimentation was actively expanding. Microelements migration with capturing denudation plains occurred in stable processes of peat accumulation and localization of economically important components in streams associated with plains.
 Contrasting forms of conjugation in the flexure-uplift system and uneven localization of microelements are determined by high level of geodynamic activity on the south-eastern margin of Zeya-Bureya sedimentary basin. The presence of gold throughout the strata of the Paleocene and Lower-Middle Miocen coal-bearing sediments in the Sergeevskoe, Yerkovetskoe and Raychikhinskoe deposits is established. The Sergeevskoe deposit coals are enriched with Be, Sc, V, Ga, Rb, Nb, Ta, REE + Y.

An ungual phalanx of a dromaeosaurid dinosaur from near Blagoveshchensk was studied for the first time. The occurrence of dromaeosaurids apart from other taxa of dinosaurs is evidence of the high biodiversity of the Amur region before the Cretaceous–Paleogene event.

Currently there are six locations of Cretaceous continental fauna and flora in Amur region: Blagoveshchensk, Kundur and Astashikha, Gilchin, Dim, Bureinsky Belogory. Gilchin is the location of the Cretaceous dinosaurs, the potential of which still requires evaluation. The article provides new information about the history of its discovery, as well as the description of the fossils from the Gilchin collection presented in the exposition of the Paleontological Museum of the Amur Scientific Center of the Far East Branch of the Russian Academy of Sciences. The fauna of Gilchin, established by fossil bone remains, includes hadrosaurs, carnivorous dinosaurs, a dinosaur whose identity it is difficult to determine, and turtles (Trionychidae indet). Most of the definable bone remains of the collection belong to the hadrosaurs. In terms of preservation, the fossil material is close to that of the Chinese locations of Ulaga and Jiayin / Longu Shan. The article assumes similarity of the genesis of the locations of Gilchin and Jiayin / Longu Shan (China).

The current technologies available in the world market for the chemical processing of caustobioliths of carbonic series are overviewed. The prospects for the expansion of the coal supply base in the Far East of Russia are discussed, and the main lines of advancement in the coal preparation industry are specified. It is possible to arrange coal chemistry clusters in the Amur Region (thermal conversion of coal, production of Montana wax and oxidized humite), in the Khabarovsk Territory (in-situ gasification) and in the Primorye (motor fuel and liquid fuel production).

We have studied the effect of γ-radiation on the optical constants of soda-lime-silicate glasses. As the irradiation dose grows in the interval from 3.7 to 3.7 × 101 Gy, the refractive index n increases, while the optical bandgap width decreases (from 3.13 to 3.05–3.09 eV); upon irradiation to a dose of 3.7 × 102 Gy, the refractive index n drops, while the optical bandgap width E g increases up to 3.23 eV.

Samples of commercial electric-grade ceramic before and after exposure to γ rays (21 Gy·sec) and a thermal neutron flux (3·1016 sec–1·m–2) at temperatures 300–900 K in the frequency range 0.3–30 kHz are investigated. The changes in electric conductivity and dielectric losses are discussed on the basis of a model of a disordered dielectric with electrically charged, locally uncompensated, structural defects. Correlations are made between the number of structural defects and the total internal surface area.