scholarly journals GRAPHO-ANALYTICAL ANALYSIS OF OIL SPILLS WITH GRAVITY FLOW FROM MULTIPHASE PIPELINES

2021 ◽  
Vol 07 (03) ◽  
pp. 04-12
Author(s):  
Fidan Ismayilova Fidan Ismayilova
Keyword(s):  
Analytical Method ◽  
Oil And Gas ◽  
Oil Spills ◽  
Gravity Flow ◽  
Maximum Point ◽  
Normative Documents ◽  
Oil Pipelines ◽  
Correct Determination ◽  
Accident Site

It is important to determine the amount of oil spilled in order to assess the losses and environmental impacts caused by accidents during the operation of oil pipelines. In the article it was proposed a grapho-analytical method based on the analysis of accidental oil spills from pipelines for the correct determination of the amount of hydrocarbons released into the environment in different modes. It has been proved that the assumption that the flow of oil into the environment due to the fact that the atmospheric pressure during the accident is not at the maximum point of the route profile, but at the accident site (hole) is not correct. At present, in normative documents and literature sources, unlike monophasic flows, there are almost no correct methods for estimating and calculating oil and gas spills for multiphase flows. Considering the importance of determining in which part of the pipeline the oil will leak in case of real accidents, the studies were carried out on the basis of the compacted profile of the pipeline. In the article, it was identified oil spills, as well as the fact that the gravity-flow regime is 3-5% of the volume of the pipeline and the conditions under which the complete unloading of the pipeline is possible. Keywords: oil spill, gravity-flow, hydrostatic pressure, vapor pressure, compacted profile, grapho-analytical method.

scholarly journals Prediction methodology for potential damage from misuse of agricultural lands

2020 ◽  
Vol 161 ◽  
pp. 01060
Author(s):  
Kirill Zhichkin ◽  
Vladimir Nosov ◽  
Lyudmila Zhichkina ◽  
Sergei Tkachev ◽  
Liudmila Voloshchuk
Keyword(s):  
Oil And Gas ◽  
Oil Spills ◽  
Oil And Gas Industry ◽  
Transport Infrastructure ◽  
Agricultural Lands ◽  
Damage Development ◽  
Gas Industry ◽  
Damage Extent ◽  
Potential Damage

The article is devoted to development of prediction methodology for potential damage from misuse of agricultural lands such as accommodation of oil and gas industry facilities, transport, infrastructure complexes, and emergency management. The purpose of the research is to propose a methodology for determination of potential damage to territory from misuse of agricultural lands. In order to do this, the following objectives need to be achieved: - group the sources of damage from agricultural lands misuse based on empirical evidence; - determine and classify the main types of damage and their periods; - develop the methodology and mathematical apparatus for calculation and prediction of damage extent on the “municipal district-region” level; - predict the losses from agricultural lands misuse in accordance with conditions of the Samara region. The proposed methodology allows one to more accurately assess the damage to large territories (district, region, country), which is essential to the work of administrative bodies. For calculation purposes, all cases of agricultural lands misuse are divided into four categories, each of which has its features of damage development. The obtained methodology was tested in the Samara region, where annually from 2.5 to 4.0 thousand ha of agricultural lands are used for other purposes than intended. Note that more than 20% of this number is removed from use for a long period of time (for more than 10 years). Oil spills account for 2.3-4.0% of land misuse. In 2021 the resulting damage could amount to 1.9 billion rubles.

LUMINESCENT DETERMINATION OF SUGAR IN NATURAL HONEY

2020 ◽  
Vol 0 (4) ◽  
pp. 29-32
Author(s):  
B.M. GAREEV ◽  
◽  
A.M. ABDRAKHMANOV ◽  
G.L. SHARIPOV ◽  
◽  
...  
Keyword(s):  
Quantum Dots ◽  
Laboratory Test ◽  
Aqueous Solutions ◽  
Analytical Method ◽  
Sugar Content ◽  
Carbon Quantum Dots ◽  
Photoluminescence Intensity ◽  
Sucrose Content ◽  
Natural Honey

The photoluminescence of carbon quantum dots synthesized from natural honey and mixtures of honey and sugar has been studied. An increase in the sugar content leads to a decrease in the photoluminescence intensity without changing the shape of the luminescence spectrum of these quantum dots aqueous solutions, which is associated with a decrease in the yield of their synthesis in the sugar presence. The discovered effect can be used to detect sugar in honey. When examining five different market samples of flower honey using this method, two of them showed a significant decrease in the photoluminescence intensity. A laboratory test for compliance with GOST 19792-2017 Standard requirements established an excess of the sucrose content in these samples. Luminescent determination of sugar in honey does not require complicated equipment and can be used to develop a new analytical method for determining the sugar content in counterfeit natural honey.

Hydrogeology correction in the gravitational field from satellite data

2018 ◽  
Vol 931 (1) ◽  
pp. 2-7
Author(s):  
V.D. Jushkin ◽  
L.V. Zotov ◽  
O.A. Khrapenko
Keyword(s):  
Gravitational Field ◽  
Oil And Gas ◽  
Repeated Measurements ◽  
Geological Factors ◽  
Grace Satellite ◽  
Gas Pumping ◽  
Acceleration Of Gravity ◽  
Determination Of Parameters ◽  
Gravity Acceleration

The results of repeated measurements of the acceleration of gravity by the Russian absolute ballistic field gravimeter GABL-M on points of oil and gas deposits in the permafrost over a five year period are presented. The changes of gravity acceleration by the absolute gravimeter and GRACE satellite were compared. The results of comparisons of differences gravity acceleration by ballistic gravimeter GABL-M and relative Canadian gravimeters CG5 were [i]shown. The errors in determination of parameters of the gravitational field ballistic gravimeter GABL-M and CG5 gravimeters group were presented. The method of measurement with the gravimeter GABL-M and the method of determining the vertical gradients relative CG5 gravity meters was described. The necessity of introducing corrections of hydrogeology is caused by influence of hydro geological factors on the gravitational field in the permafrost. They are comparable with the values of the field change in the result of gas pumping.

scholarly journals Rapid Analytical Method for the Determination of 220 Pesticide with Their Isomers by GCMS-TIC

2021 ◽  
Author(s):  
Mohamed H. EL-Saeid ◽  
Ashraf S. Hassanin ◽  
Abdulqader Y. Bazeyad ◽  
Norhan M. Hamza
Keyword(s):  
Analytical Method

Green analytical method for the determination of sofosbuvir, ledipasvir, ribavirin and complex silymarin flavonoids simultaneously in biological fluids

2021 ◽  
Vol 164 ◽  
pp. 105964
Author(s):  
Amira F. El-Yazbi ◽  
Yasmine Khalifa ◽  
Mohammed A.W. Elkhatib ◽  
Ahmed F. El-Yazbi
Keyword(s):  
Analytical Method ◽  
Biological Fluids
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