Now showing items 81-90 of 240
Optimum power transmission-based droop control design for multi-terminal HVDC of offshore wind farms
(
IEEE
, 2013 , Article)
Power generation through wind is expected to play a major role in the world's future energy portfolio. Nevertheless, wind power integration remains a challenging research area due to the special characteristics of wind ...
An improved performance direct-drive permanent magnet wind generator using a novel single-layer winding layout
(
IEEE
, 2013 , Article)
Direct-drive permanent magnet (PM) generators have become a strong contender in medium and large rating wind energy conversion systems as they not only provide higher efficiency and annual energy production, but also reduce ...
Studying the effect of over-modulation on the output voltage of three-phase single-stage grid-connected boost inverter
(
Elsevier B.V.
, 2013 , Article)
Voltage boosting is very essential issue in renewable-energy fed applications. The classical two-stage power conversion process is typically used to interface the renewable energy sources to the grid. For better efficiency, ...
DC-link capacitor voltage balancing for a five-level diode-clamped active power filter using redundant vectors
(2013 , Article)
This paper investigates the compensation and modulation processes of the five- level diode-clamped active power filter, compensating a three-phase rectified resistor-inductor load with redundant vectors. From the analysis, ...
A power control strategy for flywheel doubly-fed induction machine storage system using artificial neural network
(
Elsevier Ltd
, 2013 , Article)
A large-capacity low-speed flywheel energy storage system (FESS) based on a doubly-fed induction machine (DFIM) consists of a wound-rotor induction machine and a back-to-back converter rated at 30-35% of the machine power ...
Efficacy of Lawsonia inermis leaves extract and its phenolic compounds against olive knot and crown gall diseases.
(
Elsevier
, 2013 , Article)
This study was undertaken to determine the antibacterial efficacy of the leaves extracts of Lawsonia inermis in vitro and in vivo, against the phytopathogenic bacteria Pseudomonas savastanoi pv savastanoi IVIA 1628 and ...
Photodynamic therapy for hair removal
(
Hamad bin Khalifa University Press (HBKU Press)
, 2013 , Article)
Background: Unwanted hair is one of the most common medical problems affecting women of reproductive age inducing a lot of psychological stress and threatening their femininity and self-esteem. Old methods of removing ...
Properties of nanoclay PVA composites materials
(
Hamad bin Khalifa University Press (HBKU Press)
, 2013 , Article)
Polyvinyl alcohol (PVA)/Na-rich Montmorillonite (MMT) nanocomposites were prepared using solution method to create polymer-clay nanocomposite (PCN) material. The PCN material was studied using X-ray diffraction (XRD), ...
Determination of the main factors contributing to increases in medicine expenditures for the National Health Insurance Fund in Sudan
(
Blackwell Publishing Ltd
, 2013 , Article)
Objectives: To assess the main factors that contributed to the increase in medicine expenditure of the National Health Insurance Fund in Sudan in the period 2006-2010. Methods: A time-series decomposition analysis was ...
Time to entry of generic medicines in Malaysia: Implications for pharmaceutical cost containment
(
Blackwell Publishing Ltd
, 2013 , Article)
Objectives: Generic medicine availability is crucial for maintaining the Malaysian heavily subsidised public healthcare system, and for reducing rising national pharmaceutical expenditure. This paper analyses the time to ...