Results 1 to 10 of about 4,859,408 (168)

Molecular Dynamics Study on the Diffusion Mass Transfer Behaviour of CO2 and Crude Oil in Fluids Produced via CO2 Flooding

open access: yesMolecules, 2023
Carbon dioxide flooding is one of the main methods used to improve crude oil recovery. It can not only improve oil recovery but also reduce greenhouse gas emissions. However, the addition of carbon dioxide makes crude oil become a more complex multiphase
Shuang Wang   +4 more
doaj   +1 more source

Wear analysis and life prediction of sucker rod and tubing under ternary emulsion lubrication in Daqing oilfield: a case study in block H

open access: yesJournal of Petroleum Exploration and Production Technology, 2023
Daqing Oilfield as the world’s largest application area of alkali–surfactant–polymer (ASP) flooding, in recent years, with the increase in aging wells, the eccentric wear and deformation of sucker rod and pipe during oil production has become more and ...
Chengting Liu   +4 more
doaj   +1 more source

Copper:caeruloplasmin ratio [PDF]

open access: yesJournal of Clinical Pathology, 2007
Investigation of copper status can be a diagnostic challenge. The non-caeruloplasmin-bound copper (NCC) has deficiencies; accordingly, the copper:caeruloplasmin ratio has been suggested as an alternative index of copper status. A reference interval for this index was derived.
Patrick J, Twomey   +4 more
openaire   +2 more sources

Del hay que adaptarse a la transformación social

open access: yesRatio Juris, 2023
Este breve texto presenta la distancia que existe entre la aparición de un nuevo imperativo político –hay que adaptarse- del cual se ha abanderado el tecnoliberalismo y sus instituciones, mediante la estrategia del solucionismo tecnológico, lo que ...
Editor Ratio Juris
doaj   +1 more source

Hazard ratio [PDF]

open access: yesCroatian Medical Journal, 2019
A note on methods for analysis of time to event data and interpretation of hazard ratio.
Trkulja, Vladimir, Hrabač, Pero
openaire   +3 more sources

Homicídio, infidelidade e sujeira em quartos de hotel: problemas de significado probatório

open access: yesQuaestio Facti, 2023
As chamadas evidências não se podem considerar provas dos crimes antes que se lhes imponha um significado probatório, mas este significado é mais problemático do que os discursos acusatórios estão dispostos a admitir.
Eliomar da Silva Pereira
doaj   +1 more source

Study on optimal operation conditions in the heating process of a crude oil single-disk floating roof tank: Insights from exergy transfer analysis method

open access: yesEnergy Reports, 2023
Due to China’s high demand for foreign crude oil, reducing oil storage energy consumption has become the focus of national attention. In this paper, the mathematical model of the heating process of a single-disk floating roof tank is established.
Shuai Ji   +4 more
doaj   +1 more source

Cárteles corporativos y desafíos de los modelos europeos del mercado de trabajo

open access: yesRevista Internacional de Organizaciones, 2013
Proponemos que una de las principales causas de las deficiencias que presentan los mercados de trabajo europeos es la existencia de carteles corporativos, a traves de los cuales el estado ha delegado varias maneras de regular el poder para empleados y ...
Nils Karlson, Henrik Lindberg
doaj   +1 more source

Studies on energy consumption of crude oil pipeline transportation process based on the unavoidable exergy loss rate

open access: yesCase Studies in Thermal Engineering, 2018
In order to ensure the crude oil pipeline process smoothly, the driving force has a certain exergy loss. Based on the exergy analysis method, according to the required minimum potential difference of pipeline transportation, the unavoidable exergy loss ...
Qinglin Cheng   +5 more
doaj   +1 more source

Research on Exergy Flow Composition and Exergy Loss Mechanisms for Waxy Crude Oil Pipeline Transport Processes

open access: yesEnergies, 2017
The basic theory of exergy was used to derive the formulae of physical and chemical exergy in the process of pipeline transportation, combined with the effect of wax deposition on the thermodynamic parameters including specific heat, density, chemical ...
Qinglin Cheng   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy