Influence of extraction methods on the composition of essential oils of Achillea millefolium L. from Lithuania [PDF]
In this study, flowering aerial parts of Achillea millefolium were used as a matrix for supercritical CO2 extraction (SFE) of volatile oil. The collected extracts were analyzed by GC-FID and GC-MS methods and their composition were compared with that of ...
Bagdonaite, E. +4 more
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Sur la corde raide : rente pétrolière et développement en Équateur (1972-2017)
This article deals with the conditions of oil rent management in Ecuador during the oil era (1972-2017) from an historical and institutional perspective.
Constantin Lopez
doaj +1 more source
Oil Spill Detection Analyzing “Sentinel 2“ Satellite Images: A Persian Gulf Case Study [PDF]
Oil spills near exploitation areas and oil loading ports are often related to the ambitions of governments to get more oil market share and the negligence at the time of the loading in large tankers or ships.
GROPPI, DANIELE +4 more
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Dry oil powders and oil foams stabilised by fluorinated clay platelet particles [PDF]
A series of platelet sericite particles coated to different extents with a fluorinating agent has been characterised and their behaviour in mixtures with air and oil studied.
Binks, Bernard P. +2 more
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Flow coupling during three-phase gravity drainage [PDF]
We measure the three-phase oil relative permeability k(ro) by conducting unsteady-state drainage experiments in a 0.8 m water-wet sand pack. We find that when starting from capillary-trapped oil, k(ro) shows a strong dependence on both the flow of water ...
Aminzadeh, B. +3 more
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Análisis de la sostenibilidad del modelo económico venezolano: chavismo, petróleo y distribución de la renta [PDF]
This paper analyzes the Venezuelan economic model during the governments of Hugo Chávez and Nicolás Maduro (1999-2016), in order to find out if it is in a circumstantial crisis or in a bankruptcy of unsustainability.
Hernández-Martínez, D. +1 more
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Nipa is one of the vegetation mangroves in Southeast Sulawesi that optimal utilization by people in this region is not optimal because less of information.
Rolan Rusli +3 more
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Oil film measurement in polytetrafluoroethylene-faced thrust pad bearings for hydrogenerator applications [PDF]
There is a growing trend in the replacement of the babbit facing in thrust pad bearings with a composite polytetrafluoroethylene (PTFE) surface layer. The PTFE-faced bearings have been shown to allow a greater specific pressure, reduce thermal crowning ...
Drinkwater, B.W. +3 more
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The purpose of the current study was to identify the effect of the length of a vegetation period of the collection soybean samples on grain productivity and quality. The study was carried out in the southern part of the Rostov region in the fields of the
A. R. Ashiev +4 more
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Are product spreads useful for forecasting? An empirical evaluation of the Verleger hypothesis [PDF]
Notwithstanding a resurgence in research on out-of-sample forecasts of the price of oil in recent years, there is one important approach to forecasting the real price of oil which has not been studied systematically to date. This approach is based on the
Baumeister, Christiane +2 more
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