Results 1 to 10 of about 8,127 (118)

Aquatic and terrestrial heart rates in fur seals: evidence for delayed metabolic processing [PDF]

open access: yesFrontiers in Physiology
A seal’s heart rate is affected by their physiological adaptation to aquatic and terrestrial environments. At-sea, heart rate during dive bouts cycles between bradycardia during dives and tachycardia for oxygen replenishment on the sea-surface.
Melissa J. Walker   +10 more
doaj   +2 more sources

Construction and application of reservoir development measure benefit evaluation system [PDF]

open access: yesE3S Web of Conferences, 2021
The reservoir passes the peak of reserves.The reserves of new investment and development are decreasing year by year. The reserve resources are insufficient. Some of the main development units have entered the stage of secondary or tertiary oil recovery.
Han Dan, Zhang Debin
doaj   +1 more source

Design and Evaluation of the Compact and Autonomous Energy Subsystem of a Wave Energy Converter

open access: yesEnergies, 2023
This paper presents the results of the design process focused on the development of the energy subsystem (ES) of a wave energy converter (WEC). The ES is an important electrical part that significantly affects the energy reliability and energy efficiency
Marcin Drzewiecki, Jarosław Guziński
doaj   +1 more source

Effect of CO2 Huff and Puff Rounds on Crude Oil Properties

open access: yesJournal of Chemistry, 2023
In view of the deterioration of oil well liquid supply capacity and oil increase effect after multiple rounds of carbon dioxide (CO2) huff and puff, according to the actual conditions of the Ng12 reservoir in the XA oilfield, an indoor physical ...
Qionglin Shi, Sha Gong, Xiaoping Qin
doaj   +1 more source

Some characteristics of offshore operations [PDF]

open access: yesZbornik Radova: Pravni Fakultet u Novom Sadu, 2011
Offshore operations are not on the margins of the world economy. They are an integral part of modern business practice. They have become one of the most important instruments in the contemporary globalized financial system.
Popov Đorđe
doaj   +1 more source

Bird Displacement by Wind Turbines: Assessing Current Knowledge and Recommendations for Future Studies

open access: yesBirds, 2021
Wind energy developments can be responsible for negative impacts on birds, including displacement. In this study we performed a systematic review of the literature available on bird displacement due to wind turbines, both onshore and offshore, to: (i ...
Ana Teresa Marques   +2 more
doaj   +1 more source

Lessons Learned from the Construction, Inspection, and Defect Assessment of Reinforced Concrete Foundations for Wind Turbines

open access: yesApplied Sciences, 2022
Foundations of wind turbines are subject to challenging conditions during their service life as they support ever larger wind turbines under complex loading situations.
Alexandre Mathern, Jonas Magnusson
doaj   +1 more source

Wind Variation near the Black Sea Coastal Areas Reflected by the ERA5 Dataset

open access: yesInventions, 2022
In the context of the European Green Deal implementation, it is expected that there will be an increase in number of the wind farms located near the coastal areas in order to support this initiative.
Victoria Yildirir   +2 more
doaj   +1 more source

An Improved Earthquake Catalog During the 2018 Kı̄lauea Eruption From Combined Onshore and Offshore Seismic Arrays

open access: yesEarth and Space Science, 2022
The Island of Hawai’i was formed by repeated eruptions of basalts at an oceanic hotspot. Kı̄lauea, the youngest among the subaerial volcanoes of the island, erupted intensely in 2018.
XiaoZhuo Wei   +3 more
doaj   +1 more source

Numerical Evaluation of Structural Safety for Aged Onshore Wind Foundation to Extend Service Life

open access: yesApplied Sciences, 2020
In this paper, for the case of “service life extension” with the same capacity for wind turbines, a structural safety evaluation was carried out to determine whether to extend the service life of the aged foundation.
Youn-Ju Jeong   +3 more
doaj   +1 more source

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