Results 31 to 40 of about 1,700,492 (310)

Copepod manipulation of oil droplet size distribution [PDF]

open access: yesScientific Reports, 2019
AbstractOil spills are one of the most dangerous sources of pollution in aquatic ecosystems. Owing to their pivotal position in the food web, pelagic copepods can provide crucial intermediary transferring oil between trophic levels. In this study we show that the calanoidParacartia granican actively modify the size-spectrum of oil droplets.
Marco Uttieri   +6 more
openaire   +4 more sources

An Accurate and Efficient Fitness-For-Service Assessment Method of Pipes with Defects under Surface Load

open access: yesEnergies, 2021
With continued urbanization in China, the construction of urban gas pipelines is increasing, and the safety of gas pipelines are also increasingly affected by urban development and the increased scope of buildings and roads.
Jianping Liu   +6 more
doaj   +1 more source

MINLP model for operation optimization of multi-source single-sink liquid light hydrocarbon pipeline network system

open access: yesYou-qi chuyun, 2020
At present, batch mixed transportation mode is mainly adopted in the multi-source single-sink liquid light hydrocarbon pipeline network system of China's oil and gas fields.
Rui QIU   +5 more
doaj   +1 more source

Progress of research on wax removal during pigging of oil pipeline

open access: yesYou-qi chuyun, 2021
Wax deposition is a severe flow assurance challenge for waxy crude oil transportation. Generally, mechanical pipeline pigging is used to remove the wax deposits on pipeline wall.
Weidong LI   +3 more
doaj   +1 more source

Progress of research on diffusion rules of spilled oil from onshore oil pipeline and leakage consequences

open access: yesYou-qi chuyun, 2020
Oil pipeline leakage will cause direct economic losses and even adversely affect the surrounding environment and residents along the pipeline. It is crucial to be aware of the seepage, surface diffusion and evaporation of leaked oil in the surrounding ...
Shengli LIU, Yongtu LIANG, Xiao WANG
doaj   +1 more source

Determination of critical scour stripping conditions for tank bottom deposits during pipeline transportation

open access: yesYou-qi chuyun, 2023
Waxy crude oil stored in the tank for a long time will form tank bottom sediment. The settling of tank bottom deposits in oil flow during the pipeline transportation of waxy crude oil will reduce the pipeline transportation capacity, and even block the ...
YANG Ming   +7 more
doaj   +1 more source

Do oil price increases cause higher food prices? [PDF]

open access: yes, 2013
U.S. retail food price increases in recent years may seem large in nominal terms, but after adjusting for inflation have been quite modest even after the change in U.S. biofuel policies in 2006. In contrast, increases in the real prices of corn, soybeans,
Baumeister, Christiane, Kilian, Lutz
core   +3 more sources

Sterol concentration and distribution in sunflower seeds (Helianthus annuus L.) during seed development [PDF]

open access: yes, 2010
Sunflower seeds are currently used for edible oil production. Among oil minor compounds, phytosterols are of special interest due to their cholesterol reducing properties.
Alignan, Marion   +5 more
core   +2 more sources

Flow Patterns Transition Law of Oil-Water Two-Phase Flow under a Wide Range of Oil Phase Viscosity Condition

open access: yesJournal of Applied Mathematics, 2013
A systematic work on the prediction of flow patterns transition of the oil-water two-phase flows is carried out under a wide range of oil phase viscosities, where four main flow regimes are considered including stratified, dispersed, core-annular, and ...
Wei Wang   +4 more
doaj   +1 more source

Improved analytical method for strain of submarine pipeline under faulting

open access: yesYou-qi chuyun, 2020
Active fault is a major geological hazard threat to submarine pipelines, which may subject to excessive axial deformation and fail from the faulting.
Xiaoben LIU   +4 more
doaj   +1 more source

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