Results 81 to 90 of about 933,739 (206)

Research on Thyristor Reverse Recovery Behavior in High-Voltage Direct Current Transmission Converter Valves and Its Application in Integrated Protection Systems

open access: yesEnergies
The performance of converter valves is essential for the reliability and efficiency of high-voltage direct current (HVDC) transmission systems. Converter valves consist of multiple thyristor levels, each requiring regular testing to ensure proper ...
Cao Wen   +7 more
doaj   +1 more source

On the alignment of lot sizing decisions in a remanufacturing system in the presence of random yield [PDF]

open access: yes
In the area of reverse logistics, remanufacturing has been proven to be a valu- able option for product recovery. In many industries, each step of the products’ recovery is carried out in lot sizes which leads to the assumption that for each of the ...
Ivan Ferretti, Tobias Schulz
core  

Potential of power recovery of a subsonic axial fan in windmilling operation [PDF]

open access: yes, 2013
During the last decades, efforts to find efficient green energy solutions have been widely increased in response to environmental concerns. Among all renewable energies, this paper is focused on wind power generation. To this end, a windmilling axial fan
Binder, Nicolas   +3 more
core  

Reducing switching losses through MOSFET-IGBT combination [PDF]

open access: yes, 2008
This paper introduces a configuration aimed at switching losses reduction trough a power leg constructed by combining a MOSFET and an IGBT. The combined use of these different switches leads to the turn-on losses reduction trough the use of the faster ...
Marinov, Angel   +2 more
core  

OPTIMASI DAN PEMODELAN PROSES RECOVER FLAVOR DARI LIMBAH CAIR INDUSTRI PENGOLAHAN RAJUNGAN DENGAN REVERSE OSMOSIS

open access: yesJurnal Ilmu Pertanian Indonesia, 2009
The waste water of blue crab pasteurization has potential in environmental pollution. It contained TSS of 206.5mg.1-1, BOD 7,092.6mg.1-1 and COD of 51,000mg.1-1.
Uju   +3 more
doaj  

Sustaining and accelerating Africa's agricultural growth recovery in the context of changing global food prices: [PDF]

open access: yes
"Starting in the mid-1990s, Africa embarked upon its longest period of sustained, positive per capita income growth since the 1960s. This growth recovery has made a dent in poverty and holds out hope that a number of African countries may reach the ...
Badiane, Ousmane
core  

Reverse Logistics as Source of Competitive Advantages and its Relationship with Total Quality Management [PDF]

open access: yes, 2007
This paperwork analyze how Reverse Logistics (RL) provides greatbenefits like reduction of costs, new opportunities of business and facilitates adaptation to new regulations in the matter of environment, this benefits improves performance of the company ...
Antonio MIHI-RAMÍREZ   +1 more
core  

Energy consumption and recovery in reverse osmosis

open access: yesDesalination and Water Treatment, 2011
Energy consumption is a key factor which influences the freshwater production cost in reverse osmosis (RO) process. Energy recovery and reuse options have already been very well explored in the current desalination industry. Achieving minimum theoretical specific energy consumption for water recovery is not feasible due to effects of concentration ...
openaire   +1 more source

Comprehensive Evaluation of a Hybrid Forward Osmosis - Reverse Osmosis System for Wastewater Treatment, Desalination, and Energy Recovery

open access: yesJournal of Water and Environment Technology
Forward osmosis (FO) technology, though gaining interest in the last two decades, is still regarded as non-economically viable option. In the light of the recent advances in FO membrane technology and potential benefits of its integration with reverse ...
Mokhtar Guizani   +4 more
doaj   +1 more source

T/R switch design for short-range measurements, part 6.1A [PDF]

open access: yes
The positive intrinsic negative (PIN) diode switch which is designed to protect the receiver from burnout or damage on transmission and channel the echo signal to the receiver on reception is outlined. The receiver must be protected firmly.
Yu, B.
core   +1 more source

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