Results 61 to 70 of about 934,727 (249)

Options for Control of Reactive Power by Distributed Photovoltaic Generators [PDF]

open access: yes, 2010
High penetration levels of distributed photovoltaic(PV) generation on an electrical distribution circuit present several challenges and opportunities for distribution utilities. Rapidly varying irradiance conditions may cause voltage sags and swells that
Backhaus, Scott   +3 more
core   +1 more source

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

open access: yesPediatric 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   +4 more
wiley   +1 more source

Numerical Study on the Effects of Cavitation Bubble Evolution on Dielectric Recovery Characteristics of Water

open access: yesIEEE Access
Water as a common medium is extensively used in pulsed power systems, high-voltage engineering, and insulation applications. This paper developed a numerical simulation model to study cavitation bubble evolution in water, realizing the first quantitative
Zhibo Yang   +3 more
doaj   +1 more source

Health‐Related Quality of Life and Symptom Severity Among Patients With PIK3CA‐Related Overgrowth Spectrum: A Mixed‐Methods Study to Understand Real‐World Experience With Alpelisib Treatment

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background PIK3CA‐related overgrowth spectrum (PROS) includes several rare overgrowth disorders resulting from somatic gain‐of‐function mutations in PIK3CA. Despite treatment advances, including the recent approval of alpelisib for PROS in the United States, literature detailing the patient experience with PROS is limited.
Vamsi Bollu   +8 more
wiley   +1 more source

Differential Evolution With Allocation of Mutation Strategy to Individual Based on Fitness Ranking

open access: yesComplexity
Real parameter single objective optimization has been the subject of extensive research. Differential evolution (DE) has exhibited remarkable performance.
Jianyi Peng   +3 more
doaj   +1 more source

Design considerations for high-power VHF radar transceivers: The Poker Flat MST radar phase control system [PDF]

open access: yes, 1983
Sixty-four separate 50-kW peak-power transmitters are distributed throughout the 200 x 200 meter Poker Flat MST radar antenna array. The relative phase of each transmitter is automatically controlled by a 64-channel unit located in the main building at ...
Ecklund, W. L., Johnson, P. E.
core   +1 more source

‘They Need to Hear You Say It’: Healthcare Professionals’ Perspectives on Barriers and Enablers to End‐of‐Life Discussions With Adolescents and Young Adults With Cancer

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT End‐of‐life conversations with adolescents and young adults (AYAs) with cancer rarely occur without the guidance of healthcare professionals. As a part of the ‘Difficult Discussions’ study, focused on palliative care and advance care planning discussions with AYAs with cancer, we investigated the factors that healthcare professionals identify ...
Justine Lee   +9 more
wiley   +1 more source

Comparison between Using FLC and Auto-Tuning FLC in Synchronous Generator Transient Voltage Stability Enhancement [PDF]

open access: yesEngineering and Technology Journal, 2013
This paper compares between responses of Fuzzy Logic Controller (FLC) based exciter and auto-tuning FLC based exciter. Both of the exciters are simulated separately with synchronous generator connected to infinite bus through a short transmission line ...
Majli Nema Hawas, Abdullah Yaseen Abbas
doaj   +1 more source

Analysis of the booster DC to DC converter with feedback [PDF]

open access: yes, 2014
The field effect power transistors are used in many applications in electromechanical systems. Control of the field effect power transistors requires isolated 5V control signals and isolated 12V DC sources.
Gladyshev, S. P.   +2 more
core  

Self-precharge in single-leg flying capacitor converters [PDF]

open access: yes, 2009
Flying Capacitor (FC) multilevel pulse width modulated (PWM) converters are an attractive choice due to the natural voltage balance property. During start-up of the converter, care has to be taken that the power switches are not exposed to voltage ...
Melkebeek, Jan   +2 more
core   +2 more sources

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