Results 61 to 70 of about 1,061,367 (275)

Wide input-voltage range boost three-level DC-DC converter with quasi-Z source for fuel cell vehicles [PDF]

open access: yes, 2016
To solve the problem of the mismatched voltage levels between the dynamic lower voltage of the fuel cell stack and the required constant higher voltage (400V) of the DC link bus of the inverter for fuel cell vehicles, a Boost three-level DC-DC converter ...
Li, Jing   +6 more
core   +1 more source

Exercise Interventions in Children, Adolescents and Young Adults With Paediatric Bone Tumours—A Systematic Review

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Bone tumours present significant challenges for affected patients, as multimodal therapy often leads to prolonged physical limitations. This is particularly critical during childhood and adolescence, as it can negatively impact physiological development and psychosocial resilience.
Jennifer Queisser   +5 more
wiley   +1 more source

A Deadbeat Grid一connected Control Strategy of the Single Phase Z/Q一Z Source Inverter

open access: yesJournal of Harbin University of Science and Technology, 2017
In order to improve the efficiency of Z/Q-Z source inverter and output current quality,reduce the harmonic distortion rate of grid-connected current,the control strategy of grid-connected current is applied to the Z/Q-Z source inverter.
YAN JLUg-bin   +4 more
doaj   +1 more source

A continuous Flaring- to Normal-branch transition in Sco X-1

open access: yes, 2005
We report the first resolved rapid transition from a Flaring Branch Oscillation to a Normal Branch Oscillation in the RXTE data of the Z source Sco X-1.
Alpar   +17 more
core   +1 more source

DELP Treatment on Vision and Retinal Microcirculation in Patients With Acute Ischemic Stroke: Report of Five Cases and Literature Review

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background The delipid extracorporeal lipoprotein filter from plasma (DELP) treatment can effectively reduce blood lipid, increase blood flow, and improve neurological deficits in patients with acute ischemic stroke (AIS). However, its effect on vision and retinal microcirculation in stroke patients has never been reported.
Ning Li   +9 more
wiley   +1 more source

Cascadable Enhanced Quasi‐Z‐Source Inverter with Reduced Current Stress

open access: yesIET Power Electronics
In magnetically coupled impedance source (MCIS) inverters, the turn ratio of the coupled inductor offers design flexibility. The leakage inductance, however, poses additional challenges, mainly voltage spikes.
Ahmad Mahdave   +3 more
doaj   +1 more source

Comparative evaluation of Z source / quasi Z-source direct and indirect matrix converters for PMG based WECS

open access: yesResults in Engineering
The present era sees the dominance of wind energy conversion systems as a leading technology in renewable energy. Various technologies have been devised to harness wind energy, with variable speed systems emerging as particularly advantageous ...
K.T. Maheswari   +2 more
doaj   +1 more source

A comparative study of Z-source inverter and enhanced topologies

open access: yesCES Transactions on Electrical Machines and Systems, 2018
This paper does some theoretical analysis and simulation studies on the most common topologies of Z-source inverter. As we all know, the traditional Z-source inverter has some problems, such as the voltage of the capacitor which belongs to this topology ...
Tao Li, Qiming Cheng
doaj   +1 more source

Modulation of a Chirp Gravitational Wave from a Compact Binary due to Gravitational Lensing [PDF]

open access: yes, 2005
A possible wave effect in the gravitational lensing phenomenon is discussed. We consider the interference of two coherent gravitational waves of slightly different frequencies from a compact binary, due to the gravitational lensing by a galaxy halo. This
B. F. Schutz   +4 more
core   +2 more sources

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou   +10 more
wiley   +1 more source

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