scholarly journals The Analysis of the Influence of Various Factors on the Development of Stress Corrosion Defects in the Main Gas Pipeline Walls in the Conditions of the European Part of the Russian Federation

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
A.V. Afanasyev ◽  
A. A. Mel’nikov ◽  
S. V. Konovalov ◽  
M. I. Vaskov

This paper considers the factors influencing the formation and development of stress corrosion defects detected during the inspection and overhaul of the main gas pipeline section. The surveyed gas pipeline is made of large diameter steel pipes made by controlled rolling, produced by various companies, with the predominance of pipes produced by the Khartsyzsk Pipe Plant (KhPP). The correlation between the geometric parameters of defects is described, which makes it possible to estimate the depth of cracks by external parameters. Mechanical tests by cyclic loading of samples containing cracks, based on the site operation data for the last 11 years, showed no crack growth in the absence of a corrosive medium. Micro-X-ray spectral analysis of metal and corrosion products showed no trace of the influence of hydrogen sulphide and nonmetallic inclusions (sulphides) on the development process of SCC. According to the results of the research, the process of development of stress corrosion on the main gas pipelines located in the European part of the Russian Federation is described. The organization operating the gas pipeline is recommended to take into consideration the results of this work during drawing up their repair plan.

2021 ◽  
Vol 5 (1) ◽  
pp. 48-62
Author(s):  
N. G. Ovchinnikova ◽  
◽  
D. A. Medvedkov ◽  

The article discusses the process of preparing the location description of the protected zone boundaries of the main gas pipeline for the subsequent entry of information about it in the Unified State Register of Real Estate. In 2018, the regulation of the legal status of zones with special use of the territory was based on Federal Law No. 342 "On Amendments to the Urban Planning Code of the Russian Federation and Certain Legislative Acts of the Russian Federation". Previously, the status of the zones studied in the work was regulated by legal acts, which often made it difficult to apply the legal norms related to them. The authors describe this process in detail, starting with the coordination of the object itself and ending with the result of the work, paying attention to the subtleties of the process and emphasizing the existing shortcomings.


Author(s):  
N. F. Vasilenko ◽  
O. V. Maletskaya ◽  
D. A. Prislegina ◽  
E. A. Manin ◽  
O. V. Semenko ◽  
...  

Objective– analysis of epizootiological manifestations of natural focal infections in the territory of the south of the European part of the Russian Federation in 2017.Materials and methods. Statistical documentation data from the Rospotrebnadzor Administrations, Centers of Hygiene and Epidemiology in the constituent entities of the Russian Federation, and Plague Control Research Institutes and Stations were used. The information was processed using Microsoft Excel 2010 software.Results and discussion. Epizootiological survey for 19 nosological forms of natural focal infections in the territory of the south of the European part of the Russian Federation was conducted. The total of 70155 samples of field material was tested; markers of 14 pathogens of natural focal infections were identified. The circulation of Crimean-Congo hemorrhagic fever virus was revealed in 11 constituent entities, tularemia and Lyme borreliosis pathogens – in 8 entities, West Nile virus – in 7. Markers of leptospirosis, Q fever, human granulocytic anaplasmosis and human monocytic ehrlichiosis pathogens were detected in 6 constituent entities, markers of the agent of hemorrhagic fever with renal syndrome – in 5 entities; markers of intestinal yersiniosis pathogen – in 3 constituent entities of the Russian Federation, pathogens of tick spotted fevers group, tick-borne viral encephalitis and pseudotuberculosis – in 2. The circulation of the virus Sindbis was identified in the Rostov Region. 


2019 ◽  
Vol 91 (11) ◽  
pp. 60-65
Author(s):  
A K Tokmalaev ◽  
V B Chentsov ◽  
V A Malov ◽  
V V Maleyev ◽  
G M Kozhevnikova ◽  
...  

The article describes four clinical observations of patients with babesiosis detected in the European part of the Russian Federation, two of whom were under the direct supervision of the authors. The analysis of epidemiological data, clinical picture, results of laboratory studies in the dynamics of the disease. Differential diagnosis and treatment are discussed.


Author(s):  
Andrey A. Paramonov ◽  
◽  
Sergey V. Tretyakov ◽  
Sergey V. Koptev ◽  
Aleksandr P. Bogdanov ◽  
...  

In order to improve the accuracy of forest inventory works, tables of stem volume by height classes of willow trees in the northern taiga region of the European part of the Russian Federation were created. Forest inventory standards have not previously been developed for this species in the northern taiga region. The analytical technique proposed by I.I. Gusev in 1971 for spruce forests of the European North was used in compiling the height class volume tables. It was later adopted for the description of other tree species as well. Diameters and heights of trees were measured at 41 sample plots laid out in the Verkhnyaya Toyma and Arkhangelsk forestries of the Arkhangelsk region; 105 model trees were sampled. In most cases, sample plots were laid out in mixed plantations with the predominance of willow. The data obtained on the sample plots served to determine the parameters of the height class scale. The information source for stem volume of willow trees used to be the stem volume tables for aspen trees. A comparative analysis of the tables compiled for willow trees stems with the tables for aspen taken from the Forest Valuation Handbook for the Northeast of the European part of the Russian Federation was carried out. The analysis shows significant discrepancy in the scales for willow and aspen. The use of aspen height class volume tables for willow leads to a systematic overestimation of wood volumes. Tables of stem volumes by height classes of willow trees are used to determine stand stock with the enumeration data by 4-centimeter diameter classes. The developed tables meet the forest practice requirements. The volume tables by height classes are used to calculate timber reserves when laying out sample plots; to determine the damage level in case of stand damage; and for other practical purposes. For citation: Paramonov A.A., Tretyakov S.V., Koptev S.V., Bogdanov A.P., Tsvetkov I.V. Stem Volume Tables by Height Classes of Willow Trees in the Northern Taiga Region of the European Part of the Russian Federation. Lesnoy Zhurnal [Russian Forestry Journal], 2021, no. 6, pp. 69–78. DOI: 10.37482/0536-1036-2021-6-69-78


2014 ◽  
Vol 2014 (3) ◽  
pp. 49-52 ◽  
Author(s):  
A.A. Rybakov ◽  
◽  
L.V. Goncharenko ◽  
T.N. Filipchuk ◽  
I.V. Lokhman ◽  
...  

2020 ◽  
Vol 92 (8) ◽  
pp. 24-28
Author(s):  
I. V. Maev ◽  
D. N. Andreev ◽  
V. M. Govorun ◽  
E. N. Ilina ◽  
Yu. A. Kucheryavyy ◽  
...  

Aim. Determine the primary antibiotic resistance of Helicobacter pylori (H. pylori) strains isolated from patients living in the European part of the Russian Federation. Materials and methods. As part of a clinical laboratory study, from 2015 to 2018, 27 gastrobiopsy samples obtained from H. pylori-infected patients were analyzed. H. pylori infection was verified using a rapid urease test or a 13C-urea breath test. The values of the minimum inhibitory concentration (MIC) of antibiotics were determined by the diffusion method using E-test strips (BioMerieux, France) according to the recommendations of the manufacturer. The sensitivity of the isolates was determined for 6 antibacterial drugs (amoxicillin, clarithromycin, metronidazole, levofloxacin, tetracycline, rifampicin). Results. According to the data obtained, resistance to amoxicillin was 0%, clarithromycin 11.1%, metronidazole 59.3%, levofloxacin 3.7%, tetracycline 0%, and rifampicin 14.8%. Dual resistance to clarithromycin and metronidazole was recorded in two isolates (7.4%). Conclusion. Thus, the first results of the evaluation of H. pylori antibiotic resistance in the European part of the Russian Federation indicate a low resistance of the microorganism to clarithromycin and quite high to metronidazole.


Kardiologiia ◽  
2019 ◽  
Vol 59 (11S) ◽  
pp. 77-84
Author(s):  
Yu. V. Badin

Aim. Analysis of antihypertensive treatment among different groups of patients with arterial hypertension from “EPOCHA” study 2017. Materials and methods. EPOCHA study is a representative sample of the European part of the Russian Federation was created in 2002 and re-examined in 2017. Results. 34.6% of the effectively treated (ET) patients had one antihypertensive drug and 32,2% of the ineffective treatment (IT) patients, p=0.16. Two-component antihypertensive therapy was 45.9% and 44.9%, respectively, p=0.56. Three antihypertensive drugs had 17.9% of the ET patients and 20.7% of the IT patients, p=0.05. Four antihypertensive drugs had 1.6% of the ET patients and 2.2% of the IT patients. The frequency of use of renin-angiotensin-aldosterone system blockers in the group of ET patients was 85.0%, which was significantly lower than 91.6% in the group of IT patients, р<0.0001. Conclusion. EPOCHA study shows that structure of antihypertensive therapy does not differ between ET and IT patients what is caused lack of medical supervision for patients with hypertension in real clinical practice.


EPPO Bulletin ◽  
2018 ◽  
Vol 48 (2) ◽  
pp. 266-273 ◽  
Author(s):  
A. N. Afonin ◽  
N. N. Luneva ◽  
Y. A. Fedorova ◽  
Yu. E. Kletchkovskiy ◽  
A. F. Chebanovskaya

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