Results 21 to 30 of about 284,191 (261)

Spatial distribution of argan tree influence on soil properties in southern Morocco [PDF]

SOIL, 2021
The endemic argan tree (Argania spinosa) populations in southern Morocco are highly degraded due to overbrowsing, illegal firewood extraction and the expansion of intensive agriculture.
M. Kirchhoff, T. Romes, I. Marzolff, M. Seeger, A. Aït Hssaine, J. B. Ries   +5 more
doaj   +1 more source

Numerical simulation of rivulet evolution on a horizontal cable subject to an external aerodynamic field [PDF]

, 2010
On wet and windy days, the inclined cables of cable-stayed bridges may experience a large amplitude oscillation known as rain-wind-induced vibration (RWIV).
Duffy, B.R., Robertson, A.C., Sullivan, J.M., Taylor, I.J., Wilson, S.K.   +4 more
core   +1 more source

Autonomous take-off and landing of a tethered aircraft: a simulation study

, 2015
The problem of autonomous launch and landing of a tethered rigid aircraft for airborne wind energy generation is addressed. The system operates with ground-based power conversion and pumping cycles, where the tether is repeatedly reeled in and out of a ...
Fagiano, Lorenzo, Schnez, Stephan, Van, Eric Nguyen   +2 more
core   +1 more source

Influence of an Integral Heave Plate on the Dynamic Response of Floating Offshore Wind Turbine Under Operational and Storm Conditions

Energies, 2020
The hydrodynamic performance of the floating foundation for offshore wind turbines is essential to its stability and energy harvesting. A semi-submersible platform with an integral heave plate is proposed in order to reduce the vertical motion responses.
Yichen Jiang, Guanqing Hu, Zhi Zong, Li Zou, Guoqing Jin   +4 more
doaj   +1 more source

Plastic optical fiber sensors for mooring lines monitoring in floating wind turbines: A reliability study of OTDR measurement

Applied Ocean Research
This study investigates the use of POF (Plastic Optical Fibers) for mooring lines monitoring in floating wind turbines. Focusing on their mechanical adaptability and optical performance in marine environments. Optical attenuation measurement are employed
Romain Grangeat, Marion Girard, Cyril Lupi, Dominique Leduc, Frédéric Jacquemin   +4 more
doaj   +1 more source

Fatigue Analysis of the Oil Offloading Lines in FPSO System under Wave and Current Loads

Journal of Marine Science and Engineering, 2022
In this paper, fatigue analysis of oil offloading lines (OOLs) in the floating production storage and offloading (FPSO) catenary anchor leg mooring (CALM) buoy offloading system under wave and current loads in the West Africa Sea area is carried out by ...
Xu Zhang, Wenchi Ni, Liping Sun
doaj   +1 more source

New developments in rain–wind-induced vibrations of cables [PDF]

, 2010
On wet and windy days, the inclined cables of cable stayed bridges can experience large amplitude, potentially damaging oscillations known as rain-wind-induced vibration (RWIV).
Duffy, B.R., Robertson, A.C., Sullivan, J.M., Taylor, I.J., Wilson, S.   +4 more
core   +1 more source

Numerical modeling of a mooring line system for an offshore floating wind turbine in Vietnamese sea conditions using nonlinear materials

Water Science and Engineering
The offshore renewable energy industry has been developing farms of floating offshore wind turbines in water depths up to 100 m. In Vietnam, floating offshore wind turbines have been developed to increase the production of clean and sustainable energy ...
Hien Hau Pham
doaj   +1 more source

Detecting microplastics pollution in world oceans using SAR remote sensing [PDF]

, 2018
Plastic pollution in the world’s oceans is estimated to have reached 270.000 tones, or 5.25 trillion pieces. This plastic is now ubiquitous, however due to ocean circulation patterns, it accumulates in the ocean gyres, creating “garbage patches”.
Ackermann, Nicolas, Alparone, Matteo, Boardman, Carl, Davaasuren, Narangerel, Hajnsek, Irena, Marino, Armando, Nunziata, Ferdinando   +6 more
core   +3 more sources

Pulmonary Dysfunction Is Associated With Sleep Study Abnormalities in Children With Sickle Cell Disease: A Multicenter Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pulmonary dysfunction and sleep abnormalities are common in children with sickle cell disease (SCD) and are associated with worse clinical outcomes. Whether spirometry abnormalities are associated with polysomnography (PSG) findings remains unclear.
Ammar Saadoon Alishlash, Anis Rabbani Nourani, A. K. M. Fazlur Rahman, Dima Ezmigna, Tarig Ali‐Dinar   +4 more
wiley   +1 more source