Results 11 to 20 of about 790,214 (295)

Investigation of Corrosion Inhibition Effect of Enprofylline Drug on Mild Steel Corrosion in Sulphuric Acid Solution

open access: yesInternational Journal of Electrochemical Science, 2020
The drug Enprofylline (DE) [3-propylxanthine)] was examined as potential corrosion inhibitor of mild steel in 1 M sulphuric acid (H2SO4) media using weight loss, electrochemical, surface and quantum chemical studies.
Yin Liangtian   +4 more
doaj   +1 more source

Correlation of Gas Quality with Hydrodynamic Parameters in Transmission Networks [PDF]

open access: yesMATEC Web of Conferences, 2019
Natural gases are a mixture of hydrocarbons. Their composition determines the basic variables that need to be taken into account in the calculation of transport or gathering systems.
Eparu Cristian Nicolae   +2 more
doaj   +1 more source

The twin-screw extrusion technology, an original and powerful solution for the biorefinery of sunflower whole plant [PDF]

open access: yes, 2010
The objective of this study was to evaluate the feasibility of an aqueous process for the biorefinery of sunflower whole plant using a twin-screw extruder.
Evon, Philippe   +3 more
core   +1 more source

Oil Extraction, Economic Growth, and Oil Price Dynamics [PDF]

open access: yesBioPhysical Economics and Resource Quality, 2017
We use economic production function theory and an empirical model of oil prices based only on oil extraction data to analyze the dynamics of the economy and oil prices as we transition into the contraction phase of oil extraction. We explore the implications with respect to several common scenarios.
Illig, Aude, Schindler, Ian
openaire   +3 more sources

Analysis of Dynamical Heat Conductivity of the Reservoir and Fluid Evacuation Zone on the Gas Condensate Well Flow Rate

open access: yesJ, 2020
This study shows that the thermal conductivity of the rock borehole adjacent to the wells varies depending on the operation of the well. This is due to the fact that the actual temperature and temperature difference affect the humidity and other thermal ...
Kouadio Fabrice Anzian   +5 more
doaj   +1 more source

The effect of ultrasound pretreatment on some selected physicochemical properties of black cumin (Nigella Sativa) [PDF]

open access: yes, 2018
Background In the present study, the effects of ultrasound pretreatment parameters including irradiation time and power on the quantity of the extracted phenolic compounds quantity as well as on some selected physicochemical properties ...
A Jiménez   +42 more
core   +1 more source

Oil extraction imperils Africa's Great Lakes [PDF]

open access: yesScience, 2016
![Figure][1] Children play on fishing boats at Lake Tanganyika, one of the East African Great Lakes threatened by oil exploitation. PHOTO: BLICKWINKEL/ALAMY STOCK PHOTO As the world's demands for hydrocarbons increase ([ 1 ][2]), remote areas previously made inaccessible by ...
Verheyen, Erik   +70 more
openaire   +6 more sources

Prediction of wax deposit thickness in waxy crude oil pipelines using improved GM(1,1) model

open access: yesFrontiers in Chemical Engineering, 2022
In this paper, the GM(1,1) model with function arccosx transformation and GM(1,1) model with function transformation are established by using arccosine function transformation method and aarccosx function transformation method, and the GM(1,1) model with
Shiqi Xu   +4 more
doaj   +1 more source

Direct extraction of oil from sunflower seeds by twin-screw extruder according to an aqueous extraction process: Feasibility study and influence of operating conditions [PDF]

open access: yes, 2007
The objective of this study was to evaluate the feasibility of an aqueous process to extract sunflower seed oil using a co-rotating twin-screw extruder. Aqueous extraction was carried out using whole seeds and the influence of the operating conditions on
Amalia Kartika   +26 more
core   +4 more sources

Aqueous extraction of residual oil from sunflower press cake using a twin-screw extruder: Feasibility study [PDF]

open access: yes, 2009
The objective of this study was to evaluate the feasibility of an aqueous process to extract the residual oil from sunflower press cakes using a co-rotating twin-screw extruder.
Amalia Kartika   +22 more
core   +3 more sources

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