Improvement of a treatment processes of high-clayey gold-bearing placers

2020 ◽  
pp. 28-32
Author(s):  
N. P. Khrunina ◽  
Keyword(s):  
Noble Metals ◽  
Similarity Theory ◽  
Environmental Safety ◽  
Main Process ◽  
Eastern Region ◽  
Jet Streams ◽  
Wide Range ◽  
Power Inputs ◽  
Far Eastern ◽  
Gold Bearing

Characteristics of the placers with increased clayiness of gold-bearing bed and high content of fine and thin gold of the Far Eastern region, as well as technological approaches to processing, including the main process – disintegration, are analyzed. It is established that a reagentless gravitational working up based on generation of acoustic vibrations in fluid media is promising and requires its development. Energy-dispersive microanalysis by means of a scanning electron microscope, phase analysis using a diffractometer, as well as granulometric, dispersed and acoustic analyses have been applied to clay conglomerates selected at a high-clayey section of the deposit under consideration on the Malaya Nesterovka River in Primorskyi Krai. The presence of a wide range of noble metals, including gold and silver, rare earth and other elements was revealed. The data obtained on the composition and properties of clay conglomerates made it possible to determine the need for a more intensive process of the sand micro-disintegration to extract fine and thin particles of valuable components based on expanding the use of gravity technologies. It is noted that the known technologies would not ensure effective extraction of valuable components. A gravitational technology with cavitation reactors, which provide a power inputs reduction by several times in comparison with known devices, is proposed and validated. The hydrodynamic generator design is developed based on the concept of the fluid flow kinetic energy converting into the energy of hydroacoustic vibrations and jet streams of mineral hydromixtures in constrained conditions taking into account the similarity theory in modeling the cavitation processes. The proposed technology will reduce in-process losses of precious and other valuable metals, increase profitability and environmental safety in comparison with known processes.

scholarly journals THE INFORMATION BASE OF SIBERIAN AND THE FAR EASTERN LIBRARIES’ LOCAL HISTORY ACTIVITY

2021 ◽  
pp. 82-91
Author(s):  
L. A. Mandrinina ◽  
V. V. Rykova
Keyword(s):  
Far East ◽  
Local History ◽  
Information Support ◽  
Eastern Region ◽  
Highly Qualified ◽  
The Far East ◽  
Wide Range ◽  
History Of ◽  
History Of Books ◽  
Far Eastern

The article provides a brief overview of library local lore activity with an emphasis on the local lore direction in book studies and bibliography of the Siberian- Far Eastern region; names organizations providing information support for local lore activities of libraries; lists local lore resources on the websites of regional libraries in Siberia and the Far East. Special attention is paid to the resources generated by the State Public Scientific Technological Library of Siberian Branch of the Russian Academy of Sciences, which is the center for information support of local history research in Asian Russia, and obtains unique techniques to create regional databases, as well as highly qualified specialists. It presents a list of databases providing information support of theoretical and practical aspects of local history activity in the regional libraries. Authors give a detailed description of DB “Scientific Sibirika”, which includes regional material on a wide range of local history: history, ethnography, economy, nature and natural resources of certain territories of Siberia and the Far East, Arctic. It is shown that theoretical and methodological research in the field of library local history, individual persons, are presented in the “professional” DB “Librarianship and bibliography in Siberia and the Far East”, which has a special heading “Local lore activities of libraries in Siberia and the Far East”; the bibliologic direction of local lore is implemented in the bibliographic DB “History of books and book business in Siberia and the Far East”. The paper concludes about the importance of library local history in the library activities, and the need to attract information resources of large libraries for more complete implementation of local history research.

scholarly journals Influence of the Technological Cycle «Fixing» on the Quality Characteristics of Pollock Fillets (Theragra Chalcogramma)

Food Industry ◽  
2020 ◽  
Vol 5 (3) ◽  
pp. 97-104
Author(s):  
Natalia Dementieva ◽  
Tatyana Boitsova ◽  
Elena Fedoseeva ◽  
Polina Krugovaya
Keyword(s):  
Quality Indicators ◽  
Storage Period ◽  
International Markets ◽  
Quality Characteristics ◽  
Theragra Chalcogramma ◽  
Eastern Region ◽  
Fresh Fish ◽  
Cooking Test ◽  
Wide Range ◽  
Far Eastern

Pollock (Theragra chalcogramma) remains one of the main fishing objects in the far Eastern region. The most popular product on both the domestic and international markets is fillet, when it is frozen it can be used to produce a wide range of finished products. The main technology for obtaining iced fillet consists of its production in a fixed or loose form. A man conducts the operation «fixed fillet» immediately after filleting fresh fish by irrigation or immersion in a cold 10 % solution of table salt. The research purpose was to determine changes in the quality characteristics of fixed and unfixed Pollock fillets during cold storage. The research object was refrigerated fixed and unfixed fillet of Pollock stored at a temperature below minus 18 degrees for up to 26 weeks. During storage the authors run organoleptic assessment on refrigerated, defrosted fillets after the cooking test. The results are the following: after 6 weeks of storage the organoleptic quality indicators are quite stable for all types of fillets; after 14 weeks there is a 40 % decrease in the overall score for the fixed fillet; moreover, there are the main changes in the samples after cooking for the most significant organoleptic indicators: color, taste, smell, consistency. After 14 weeks of storage the quality indicators of loose fillets remained almost unchanged. By the 14th week of storage the freshness value coefficient of the fixed fillet increases almost 3 times (from 14.8 to 40.0), i.e. a man can consume the fish only after mandatory cooking. The study identified that the operation of fixing fillet preserved the fillet block integrity, giving greater mechanical strength to the fillets, reducing the tissue juice loss, but it is inferior in organoleptic parameters to the loose fillet during storage reducing its shelf life. According to the experiment results, the researchers recommend a storage period for fixed frozen fillet of Pollock – up to 5 months, for loose fillet – up to 7 months without considering packaging materials.

scholarly journals On the Term ‘Jōmon’ and the Contribution of Russian Scholars to Jōmon Studies

2020 ◽  
Vol 47 ◽  
pp. 560-571
Author(s):  
Andrey V. Tabarev ◽  
Irina S. Zhushchikhovskaya ◽  
Darya A. Ivanova
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Eastern Region ◽  
Late 20Th Century ◽  
Political Events ◽  
Wide Range ◽  
High Level ◽  
Far Eastern ◽  
Research Centres ◽  
Current Stage

The article is devoted to the introduction of the term ‘Jōmon’ into Russian archaeological literature, its understanding, and the contribution of Russian scholars to Jōmon studies starting from the late 20th century. The recognition of the term and its use had some peculiarities which were caused not only by the language barrier and political events in the far eastern region, but mostly by the specifics of the archaeological investigations in the Russian Far East and the priority of research focused first on the Ainu origin, and then on the Palaeolithic rather on the nature of the Neolithic. The rise of the interest in Jōmon grew in the late 1960s and early 1970s with the discoveries of initial pottery with Final Pleistocene dates in Japan and Russia (Lower and Middle Amur Region). During the 1980s and 1990s this trend was realized in a series of publications, international conferences, and the first joint Russian-Japanese archaeological projects. The current stage is illustrated by the institualization of several research centres of Jōmon studies in Russia (Novosibirsk, Vladivostok), by a high level of international cooperation, and by a wide range of research topics, including chronological, technological, ritual and other aspects of the Jōmon period.

scholarly journals BIOSAFETY OF THE FAR EAST REGION OF RUSSIA: EPIDEMIOLOGICAL AND EPIZOOTIC TRENDS

2019 ◽  
Vol 24 (3) ◽  
pp. 128-137
Author(s):  
Natalya A. Kuznetsova ◽  
B. G. Andryukov
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Basic Research ◽  
Asia Pacific ◽  
Eastern Region ◽  
The Sustainable Development ◽  
Biological Safety ◽  
Wide Range ◽  
Basic And Applied Research ◽  
Far Eastern

Biological safety acquires a national scale, affecting a wide range of issues, including the fundamentals of the sustainable economic development of the state and, in particular, of the Russian Far East. This study was conducted as part of the implementation of the Integrated Basic Research Program «Far East», adopted by the Far Eastern Branch of the Russian Academy of Sciences (FEB RAS) for 2018-2020. Objective: analysis of the main epidemiological and epizootic trends in the countries of the Asia-Pacific region and the assessment of the concept of biological safety as the basis for the sustainable development of the Far Eastern region of the Russian Federation. Increasing the level of biosafety and protection from the threats of dangerous infectious diseases in the DFO can be achieved, among other things, by forming regional programs of basic and applied research on current problems of epidemiology, medical microbiology, genetics and molecular biology of bacteria.

TYPES OF BUILDING ROCKS AND PROSPECTS OF THE DEVELOPMENT OF THEIR PRODUCTION IN THE FAR EASTERN REGION

2017 ◽  
Vol 11 (24) ◽  
pp. 75-81
Author(s):  
A.Yu. Cheban ◽  
◽  
G.V. Sekisov ◽  
A.A. Sobolev ◽  
◽  
...  
Keyword(s):  
Eastern Region ◽  
Far Eastern

ALLOCATION OF SOURCES AND DONORS OF ECONOMICALLY VALUABLE TRAITS FROM THE COLLECTION MATERIAL OF CUCUMBER TO CREATE HIGHLY PRODUCTIVE VARIETIES AND HYBRIDS

1970 ◽  
pp. 45-49
Author(s):  
N. V. Kulyakina ◽  
G. A. Kuzmitskaya ◽  
T. K. Yurechko
Keyword(s):  
Genetic Resources ◽  
Downy Mildew ◽  
Geographical Origin ◽  
Plant Genetic Resources ◽  
Eastern Region ◽  
Biotic And Abiotic Stress ◽  
Climate Conditions ◽  
Damage Degree ◽  
Economically Valuable Traits ◽  
Far Eastern

The downy mildew (peronosporosis) is the most dangerous and harmful cucumber disease in the Far-Eastern region. Its harmfulness is the highest during the period of flowering – fruiting, because it may completely ruin the cucumber plants both in open and protected ground. Use of cucumber sorts with effective genes that are resistant to the disease is the most efficient way to fight cucumber peronosporosis. In this connection the publication adduces the facts of study the sorts and hybrids of different ecological and geographical origin from the genetic resources collection of the N.I. Vavilov All-Russian Institute of Plant Genetic Resources (VIR) in comparison with three zoned sorts of DV NIISH selection – Mig, Khabar, Amurchonok. The aim of researches – to identify the sort samples cucumber according to the main economically valuable traits and also to the degree resistance of genetypes to the main disease of the culture in the region – downy mildew (peronosporosis), for allow to select the source material for the creation of sorts and hybrids, highly productive and resistant to biotic and abiotic stress environmental factors in the monsoon climate conditions of Khabarovsk region. The perspective genetypes having both the resistance to the diseases and productivity are not revealed as a result of the evaluation of the collection of cucumber samples according to their susceptibility by fungus diseases and productivity. Slavyanskiy (Belarus) is more resistant to peronosporosis, especially in 2016 year conditions, although it was inferior to the damage degree of disease to the zoned sorts – Mig, Khabar, Amurchonok. This perspective sample is planned to be used as a source of donors of the main economically valuable traits in a further selective work.

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