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Coffee Oil Extraction Methods: A Review. [PDF]
Green and roasted coffee oils are products rich in bioactive compounds, such as linoleic acid and the diterpenes cafestol and kahweol, being a potential ingredient for food and cosmetic industries. An overview of oil extraction techniques most applied for coffee beans and their influence on the oil composition is presented.
Ribeiro RC +8 more
europepmc +4 more sources
Geothermal heat use to eliminate hydrate formations in oil deposit injection wells [PDF]
The article is devoted to an actual issue: the development of internal downhole heat exchangers technology to combat hydration in injection wells. Purpose: development of conceptual solutions for the use of geothermal coolant in the internal well heat ...
Fyk Мykhailo +3 more
doaj +1 more source
Technological scheme of the combined geothermal-hydrocarbon system for the production and storage of energy resources [PDF]
The complex researches of schemes of extraction and storage of hydrocarbons and geothermal energy are executed in the work. In particular, according to the location, logistics and nature of the processes of generation, transportation, evacuation ...
Fyk Mykhailo I. +3 more
doaj +1 more source
With the increasing global demand for oil and gas, the development of unconventional resources such as shale gas is becoming ever more important.
Tiankui Guo +6 more
doaj +1 more source
Analyzing the Impact of Monetary Instruments on the Amount of Domestic Debt in the Context of Formulating and Solving the Problem of Modeling the Threshold Level of Debt Security [PDF]
The purpose of the article is illumination of the results of the carried out studies aimed at analyzing and quantifying the relationships between key monetary instruments and indicators of domestic debt in the context of determining the threshold levels ...
Pilko Andriy D., Chepyha Bohdan T.
doaj +1 more source
The majority of the Jurassic Yan’an Formation reservoirs in the Jingbian Oilfield of the Ordos Basin have entered the middle and late stages of development, and fine characterization of reservoir heterogeneity and recognition of the remaining oil ...
Chun-ling Guo +7 more
doaj +1 more source
In the setting of the increasing density of exploration wells, and the decreasing scale and increasing difficulty of discovering Jurassic paleogeomorphology reservoirs, it is urgent to deepen the fine depiction of pre-Jurassic paleogeomorphology features
Chunling Guo +7 more
doaj +1 more source
The Balance of Multi-phase Gathering and Transport Systems [PDF]
Natural gases are a mixture of hydrocarbons which are generally in a gaseous state. Due to the variation in transport parameters (pressure, temperature) and gas composition, there may be sectors where those appear in liquid state, the condensate.
Eparu Cristian Nicolae +3 more
doaj +1 more source
The study of the lining layer abrasing wear in the semi-autogenous grinding mill [PDF]
In this work complex investigations of the abrasing wear of lining of self-grinding mills (semiautogenous grinding mills) are carried out with the obtaining of mathematical models of wear-abrasing of elevators in terms of height, weight, volume and worn ...
Sokur Mykola +4 more
doaj +1 more source
This study is designed to determine the H2S origin in the Ordovician Ma5 Member of Daniudi gas field and study the corrosion behavior of N80, P110 and N80S tubing and casings in medium-sulfur content HE16, micro-sulfur HE3 and low-sulfur HE1 gas wells ...
Xianli Du +9 more
doaj +1 more source

