Results 1 to 10 of about 147,233 (294)

Discovery of a Metal-Line Absorber Associated with a Local Dwarf Starburst Galaxy [PDF]

, 2006
We present optical and near-infrared images, H I 21 cm emission maps, optical spectroscopy, and Hubble Space Telescope/Space Telescope Imaging Spectrograph ultraviolet spectroscopy of the QSO/galaxy pair SBS 1122+594/IC 691.
Babul A., Brian A. Keeney, Donald G. York, Jason Tumlinson, Jessica L. Rosenberg, John T. Stocke, Staveley-Smith L.   +6 more
core   +3 more sources

Ultra-Wideband and Wide-Angle Perfect Solar Energy Absorber Based on Titanium and Silicon Dioxide Colloidal Nanoarray Structure

Nanomaterials, 2021
In this paper, we designed an ultra-wideband solar energy absorber and approved it numerically by the finite-difference time-domain simulation. The designed solar energy absorber can achieve a high absorption of more than 90% of light in a continuous 3 ...
Pinghui Wu, Kaihua Wei, Danyang Xu, Musheng Chen, Yongxi Zeng, Ronghua Jian   +5 more
doaj   +1 more source

Sustainability of the Renewable Energy Extraction Close to the Mediterranean Islands

Energies, 2017
The aim of this work is to explore the possibility of transitioning a fuel powered island to a renewable powered one. This transition is analyzed for the real MV/LV distribution system of the island of Pantelleria, in the Mediterranean Sea. Particularly,
Vincenzo Franzitta, Domenico Curto
doaj   +1 more source

Maximum Energy Capturing Approach for Heaving Wave Energy Converters Using an Estimator-Based Finite Control Set Model Predictive Control

IEEE Access, 2021
The control problem in wave energy continues to remain an open question. This is mainly attributed to the difficulties associated with developing effective, yet economically viable, wave energy-harnessing control strategies, such as resource irregularity,
Mohammed Jama, Bisni Fahad Mon, Addy Wahyudie, Saad Mekhilef   +3 more
doaj   +1 more source

A Statistical Analysis for Optimisation of a Hybrid BBDB-PA in Mantanani Island, Sabah

Journal of Marine Science and Engineering, 2023
The hybrid form of wave energy converter (WEC) is a recent advancement in research concerning harvesting energy from the ocean. This study investigates the effect of size and position of the point absorber integrated with a backward bent duct buoy.
Muhamad Aiman Jalani, Mohd Rashdan Saad, Mohamad Faizal Abdullah, Mohd Azzeri Md Naiem, Mohd Norsyarizad Razali, Noh Zainal Abidin, Mohd Rosdzimin Abdul Rahman   +6 more
doaj   +1 more source

Ocean Wave Energy Converter

International Transactions on Electrical Engineering and Computer Science
This research paper presents a comparative analysis of power extraction from an Oscillating Water Column (OWC) and a Point Absorber using mathematical modeling.
Kumod Ranjan, Anula Khare, Manju Gupta
doaj   +1 more source

Eliminating stray radiation inside large area imaging arrays

, 2018
With increasing array size, it is increasingly important to control stray radiation inside the detector chips themselves. We demonstrate this effect with focal plane arrays of absorber coupled Lumped Element microwave Kinetic Inductance Detectors (LEKIDs)
Barry, Peter, Baryshev, Andrey, Baselmans, Jochem J. A., Bueno, Juan, Doyle, Simon M., Ferrari, Lorenza, Gao, Jian-Rong, Llombart, Nuria, Murugesan, Vignesh, Thoen, David J., Yates, Stephen J. C., Yurduseven, Ozan, Zmuidzinas, Jonas   +12 more
core   +1 more source

Bistability and pulsations in semiconductor lasers with inhomogeneous current injection [PDF]

, 1982
Bistability and pulsation at microwave frequencies are observed in CW GaAs semiconductor lasers with inhomogeneous current injection. Inhomogeneous current injection is achieved with a segmented contact structure.
Harder, Christoph, Lau, Kam Y., Yariv, Amnon   +2 more
core   +1 more source

Degrees of freedom effects on a laboratory scale WEC point absorber

International Marine Energy Journal
There are many archetypes of wave energy converters (WEC) that vary widely in operating principles, geometry, controls, number of bodies, and degrees of freedom (DOF).
Courtney Beringer, Bret Bosma, Bryson Robertson   +2 more
doaj   +1 more source

Optimal Constant DC Link Voltage Operation of aWave Energy Converter

Energies, 2013
This article proposes a simple and reliable damping strategy for wave powerfarm operation of small-scale point-absorber converters. The strategy is based on passiverectification onto a constant DC-link, making it very suitable for grid integration of the
Mats Leijon, Venugopalan Kurupath, Rickard Ekström   +2 more
doaj   +1 more source