scholarly journals Device for fusion drilling with simultaneous or follow-up reaming of wells in ice

2021 ◽  
Vol 44 (3) ◽  
pp. 333-343
Author(s):  
D. V. Serbin ◽  
A. N. Dmitriev ◽  
N. I. Vasiliev
Keyword(s):  
Contact Melting ◽  
Thermal Method ◽  
New Device ◽  
Lake Vostok ◽  
Subglacial Lake ◽  
Antarctic Expedition ◽  
Priority Method ◽  
Russian Antarctic Expedition ◽  
The Russian Federation

The paper deals with a new opening technology for subglacial reservoirs, which ensures environmentally friendly geological exploration. The technology is based on the results of the first openings of the subglacial Lake Vostok in Antarctica (February 2012 and January 2015). The primary goal of further studies of the subglacial Lake Vostok is to take clean samples of lake water and bottom sediments, which requires direct penetration into the lake. There is a number of conditions to be met in order to conduct further studies of the lake using a clean access well at the Vostok drilling complex. The article summarizes the main results including technological and engineering solutions protected by the patent of the Russian Federation. A detailed consideration is given to a new device for fusion drilling with simultaneous reaming of an ice hole. This device combines two technological processes: drilling due to contact melting, and an increase in the diameter of the well due to the creation of a vortex flow of a continuously heated coolant in the bottomhole zone. The thermal method of ice breaking ensures the ecological cleanliness when opening subglacial reservoirs and is a priority method that favorably differs from the existing ones. The device was named a “thermal drill reamer” (TDR). During the seasonal work of the 64th Russian Antarctic Expedition bench tests of the TDR 132/400 were carried out, the results of which confirmed that the device is capable to ensure 132 mm drilling with simultaneous reaming up to 400 mm.

scholarly journals Deep drilling at Vostok station, Antarctica: history and recent events

2007 ◽  
Vol 47 ◽  
pp. 10-23 ◽  
Author(s):  
N.I. Vasiliev ◽  
P.G. Talalay ◽  
N.E. Bobin ◽  
V.K. Chistyakov ◽  
V.M. Zubkov ◽  
...  
Keyword(s):  
Ice Sheet ◽  
Mining Institute ◽  
Deep Drilling ◽  
Drilling Operation ◽  
Subglacial Lake ◽  
Drilling Technique ◽  
Antarctic Expedition ◽  
Thermal Drilling ◽  
Russian Antarctic Expedition ◽  
Vostok Station

AbstractDeep drilling into the ice sheet at Vostok station, Antarctica, was started by specialists of the Leningrad Mining Institute (since 1991, St Petersburg State Mining Institute) in 1970. Five deep holes were cored: hole No. 1 to 952 m; hole No. 2 to 450.4 m; hole No. 3G (3G-1, 3G-2) to 2201.7 m; hole No. 4G (4G-1, 4G-2) to 2546.4 m; and hole No. 5G (5G-1) to 3650.2 m depth. Drilling of hole 5G-1 is not yet complete. The deep drilling at Vostok station has had successes and problems. All the deep holes at Vostok have undergone at least one offset drilling operation because of problems with lost drills. These deviations were made successfully using a thermal drilling technique. Several drilling records have been achieved at Vostok station. The deepest dry hole, No. 1 (952 m), was made during Soviet Antarctic Expedition (SAE) 17 in 1972. The deepest fluid-filled hole, No. 5G-1, made by a thermal drill (TBZS-132), reached 2755 m during SAE 38 in 1993. The deepest fluid-filled hole in ice, No. 5G-1, was drilled with a KEMS-132 electromechanical drill and was stopped above Vostok Subglacial Lake at 3650.2 m depth during Russian Antarctic Expedition (RAE) 51 in 2006.

scholarly journals UNESCO-Russia Mendeleev International Prize in the Basic Sciences

2021 ◽  
Vol 43 (1) ◽  
pp. 28-29
Keyword(s):  
Russian Federation ◽  
Periodic Table ◽  
Chemical Elements ◽  
Basic Sciences ◽  
The Russian Federation ◽  
The Government

Abstract As a follow-up to the 2019 International Year of the Periodic Table of Chemical Elements (IYPT2019), the Government of the Russian Federation proposed to establish and fund the joint UNESCO/Russian Federation International Prize for the Basic Sciences in the name of the Russian chemist Dmitry Mendeleev. The initiative is to provide further support to the UNESCO’s International Basic Sciences Programme (IBSP).

Subglacial Lake Vostok

2019 ◽  
pp. 123-134
Author(s):  
Scott O. Rogers ◽  
John D. Castello
Keyword(s):  
Lake Vostok ◽  
Subglacial Lake

scholarly journals Peptides in COVID-19 Clinical Trials—A Snapshot

Biologics ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 300-311
Author(s):  
Kai Hilpert
Keyword(s):  
Clinical Trials ◽  
Antiviral Activity ◽  
Russian Federation ◽  
Current Situation ◽  
Routine Diagnostics ◽  
Current Review ◽  
The Usa ◽  
The Russian Federation ◽  
The Uk

Since the beginning of the COVID-19 pandemic, there has been a strong drive and desire to find effective treatments for and protection against the disease. On the webpage ClinicalTrials.gov, a total of 6505 clinical trials currently (September 2021) investigating various aspects of COVID-19 are registered. Of these, 124 studies involving peptides were identified. These 124 were further evaluated, and 88 trials that used peptides only for routine diagnostics were excluded. The remaining 36 trials were classified into 5 different classes according to their function: immunomodulatory (5 trials), regain homeostasis (10 trials), diagnostics/biomarkers (8 trials), vaccination (9 trials), and antiviral activity (4 trials, all overlap with immunomodulatory activities). In the current review, these 36 trials are briefly described and tabularly summarised. According to the estimated finish date, 14 trials have not yet finished. All of the finished trials are yet to report their results. Seven trials were based in the USA, and Egypt, France, the UK, Turkey, and the Russian Federation conducted three trials each. This review aims to present a snapshot of the current situation of peptides in COVID-19 clinical trials and provides a template to follow up on trials of interest; it does not claim to be a complete overview.

scholarly journals Expert-analytical Support of Foreign Policy Activities

2021 ◽  
Vol 14 (5) ◽  
pp. 22-48
Author(s):  
A. A. Varfolomeev ◽  
O. P. Ivanov ◽  
I. V. Surma ◽  
Y. A. Trefilova
Keyword(s):  
Artificial Intelligence ◽  
Foreign Policy ◽  
Foreign Affairs ◽  
Decision Making Process ◽  
Policy Decisions ◽  
The Russian Federation ◽  
Detailed Interpretation ◽  
Two Stages ◽  
Expert Community

The article presents the final results of the project studying the system of expert and analytical support for foreign policy decisions. The project is devoted to conducting a survey and a set of interviews with employees of government bodies (leaders and chief specialists) who are involved in the process of preparing and making foreign policy decisions. The article contains the officials’ assessment of the main challenges when interacting with the scientific and expert community, as well as a "desired image" of such interaction.The study was held in two stages (stage I in February-October 2020, stage II-in January-August 2021) in the form of a survey with a set of follow-up interviews for a more detailed interpretation of the data obtained. The interviewees included 24 employees of federal executive bodies (the Ministry of Foreign Affairs of Russia and Rossotrudnichestvo; departments of international cooperation of line ministries, agencies and services); offices of the chambers of the Federal Assembly of the Russian Federation (departments providing international and inter-parliamentary cooperation). All participants of the study are in positions of the "managers" category or are part of the group of "chief specialists", that is, they have experience in decision-making process and/or in elaborating them. The survey and interviews were anonymous. The research is within structural-functional, institutional and regulatory approaches. The authors note that informational materials with low level of generalization and lacking recommendations and forecasts will never replace genuine analytics and expertise. Given the development of artificial intelligence, generalizing information will be automatized. As a result, expertise has to be of better quality.

scholarly journals REGULARITIES OF CONGELATION ICE DEVELOPMENT IN SUBGLACIAL LAKE VOSTOK

2015 ◽  
Vol 52 (4) ◽  
pp. 65
Author(s):  
V. Ya. Lipenkov ◽  
E. V. Polyakova ◽  
A. A. Ekaykin
Keyword(s):  
Lake Vostok ◽  
Subglacial Lake
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