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Nikitin Aleksandr A.,Tsypysheva Irina L.,Zuenko Yury I. 한국해양과학기술원 2023 Ocean science journal Vol.58 No.3
Spatial patterns of the Primorye Current, as a band of cold water along the coast of Primorye (northwestern East/Japan Sea), are considered on the data of satellite images and standard sections obtained in 2000–2020. The data of AVHRR and MODIS scanners mounted on the satellites NOAA, Terra and Aqua are used with spatial resolution of 1.0–1.1 km. Temperature and salinity profiles in the upper 500 m layer were measured at the standard sections directed southward and east-southeastward from Vladivostok. The new data contradict a false supposition about the current origin from the Okhotsk Sea that is preserved in the name of “Liman Current”, still used sometimes. The cold-water area prolongs from the southern Tatar Strait to Peter the Great Bay but is definitely separated from the Amur Liman. Its core with the lowest SST is usually located on the external shelf of Primorye, outside of the Tatar Strait. Shape of the cold-water area is complicated and highly variable; it looks seldom as an alongshore flow, but more frequently as chains of eddies or filaments. In winter, the Primorye Current is presented usually as a wide uninterrupted alongshore belt with many intrusions to the warmer waters. This belt is distorted in spring by mesoscale eddies. In summer, the cold-water zone is narrowed and sometimes interrupted between 43 and 45°N; the cold waters interact with large anticyclonic eddies which transport the warm subtropic water close to the shore. The cold-water zone begins to extend again in fall season: large eddies and cold intrusions spread offshore, and upwellings appear at the coast. In November–December, summer stratification is destroyed and the warm water advection is weakened, so the solid band of cold water mixed by convection occupies a vast area of the northwestern East/Japan Sea off the coast of Primorye. Observed structural patterns show that the cold water at the sea surface along the coast of Primorye is produced on the shelf by upwellings or tidal mixing. Possible mechanisms of the cold spot inducing are discussed.
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Development and Testing of Thrombolytics in Stroke
Dmitri Nikitin,최승범,Jan Mican,Martin Toul,Wi-Sun Ryu,Jiri Damborsky,Robert Mikulik,Dong-Eog Kim 대한뇌졸중학회 2021 Journal of stroke Vol.23 No.1
Despite recent advances in recanalization therapy, mechanical thrombectomy will never be a treatment for every ischemic stroke because access to mechanical thrombectomy is still limited in many countries. Moreover, many ischemic strokes are caused by occlusion of cerebral arteries that cannot be reached by intra-arterial catheters. Reperfusion using thrombolytic agents will therefore remain an important therapy for hyperacute ischemic stroke. However, thrombolytic drugs have shown limited efficacy and notable hemorrhagic complication rates, leaving room for improvement. A comprehensive understanding of basic and clinical research pipelines as well as the current status of thrombolytic therapy will help facilitate the development of new thrombolytics. Compared with alteplase, an ideal thrombolytic agent is expected to provide faster reperfusion in more patients; prevent re-occlusions; have higher fibrin specificity for selective activation of clot-bound plasminogen to decrease bleeding complications; be retained in the blood for a longer time to minimize dosage and allow administration as a single bolus; be more resistant to inhibitors; and be less antigenic for repetitive usage. Here, we review the currently available thrombolytics, strategies for the development of new clot-dissolving substances, and the assessment of thrombolytic efficacies in vitro and in vivo.
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On One Problem of Fracture Propagation in an Ice Layer
V. F. Nikitin,안정선,A. B. Kiselev,N. N. Smirnov,이귀주 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.54 No.2
The paper is aimed at developing a model for one of many possible ice - breaking scenarios. For a relatively thin ice layer, the pressure of the leading wedge of the ship initiates tensile stresses in the horizontal plane of the ice cover. When the tensile stresses surpass a definite critical value, fracture propagationstarts in a brittle medium, beginning from the tip of the wedge. The model of damageable thermoviscoelastic media is used to describe the flat ice cover. The problem of crack propagation in the ice cover was solved numerically using by the developed model.
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정석배(Jung Suk-Bae),Yu. G. 니끼친(Yu. G. Nikitin),이남석(토론자) 고구려발해학회 2007 고구려발해연구 Vol.26 No.-
Chernyatino-5 burial ground is located on the bank of Razdolnaya (Suiphun) river near Chernyatino village in Oktyabrskii region (Primorskii territory). It was found out in 1997, and from 1998 to 2002 by Yu.G. Nikitin there were studied 41 graves of Malgal and Palhae origin. In 2003 the Korean National University of Cultural Heritage and the Far Eastern State Technical University began the Korean-Russian joint archaeological excavations, and till there were excavated another 116 graves of Malgal and Palhae origin, and two Malgal dwelling houses. In Chemyatino-5 burial ground purely soil graves, stone crypts, graves with the stone facing over the circuit, graves with the stone facing on their bottom and graves "without base construction" were investigated. The soil graves are divided into common soil, having the stone facing over the circuit and having the stone facing on there bottom ones; stone crypts are divided into having entrance and without it. There are rectangular and elongate rectangular graves with the stone facing on their bottom. Among the graves with the stone facing over the circuit, having continuous facing, facing in the comers and facing in the comers and in the middle of the sides are met. There are many wooden frames and coffins in the graves. Long axis of them is mainly oriented to NW-SE. Cremation and burial are found. In case of burial the body could be straight or its legs were bent. In the graves with cremation there are cremation directly in the grave and the secondary one. In the soil graves usually there is only one body, but in the stone crypts, the graves with the stone facing over the circuit and the graves with the stone facing on the bottom there are as a rule two or more bodies. The head of the great part of the graves is oriented to NW, but in a twin burial one body could be oriented to NW and other to SE. Among the artifacts there are ceramics, a fragment of a big fighting iron knife, iron sword, arrow-heads, dart-heads, spear-heads, armor plates, "little daggers", knives, nails, buckles, elongated cone-shaped things, bronze plaques, jingles, bells, ear-rings, rings, horseman figures, silver ear-rings, rings, jade discs, cornelian beads, glass beads, whetstone, stone club-shaped things, clay rings and others there were found. Ceramics are divided to 4 kinds: jars, vase-shaped vessels, amphora-shaped (bottle-shaped) vessels and pots. Jars and vase-shaped vessels are usually considered to have the Malgal origin. They are usually modelled, with a touch of sand or gruss in the clay paste. They are crude and their surface is yellow and brown or brown. TIley are made in oxidizing flame. Amphora-shaped vessels' are made on potter's wheel, and their paste even if it sometimes includes fine sand is usually washed clay. Their color is grey or dark-grey, they are made in carbonizing flame and so considered Koguryo vessels. Pots usually made or completed on the wheel, made with clay sand with fine mica or loam. In the latter case they have dark-grey surface and also considered Koguryo vessels. Such artifacts as the iron sword, spear-heads, armor plates, "little daggers", bronze plaques, horseman figures, silver ear-rings, jade discs, cornelian beads and others are common in Palhae or Palhae age sites: in Troitskij burial ground, in Sinie Skaly Site, in Liudingshan Palhae burial ground, Dunhwa, in Sangjing Longtianfu Site, in Xishigang Bohaizhen burial ground, in Yangtun Dahaimeng site and others. The date of Chernyatino-5 burial ground by correlation of constructions (dwelling house and graves), layers, founds, comparison with founds from other monuments, absolute date materials is determined from the late Malgal to the middle Palhae age. The Northern part of the ground, where are concentrated the soil graves, is dated the late Malgal-middle Palhae, and the Southern part, where the stone crypts, the graves with the stone facing over the circuit and the graves with the stone facing
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Responsibility for Dissemination of Inaccurate Information on the Internet
Romanova, Vera,Nikitin, Yurii,Vozniuk, Natalia,Sverdlyk, Zoriana,Boichuk, Nelia,Kunderevych, Olena International Journal of Computer ScienceNetwork S 2021 International journal of computer science and netw Vol.21 No.8
The article is devoted to the study of the issue of liability for the dissemination of inaccurate information on the Internet. The article emphasizes that now the public opinion of socially active segments of the population is mainly formed on the basis of not critical but subjective ("consumer") analysis of the received information. The modern realities show that the main source of its origin is the Internet: electronic media and, above all, the relevant social networks. The problem of dissemination by the mass media of inaccurate information obtained via the Internet is solved; it is seen in bringing the laws of Ukraine, which regulate public relations regarding the dissemination of information, into compliance with the Civil Code of Ukraine. The issues of development and implementation of new legislative acts aimed at regulating the status of subjects of informational relations on the Internet and establishing the grounds for their liability are also investigated.
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