Results 51 to 60 of about 331,549 (312)
Therapeutic 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
Control Systems With Thyristor Converters
Вестник Пермского университета. Математика. Механика. ИнформатикаThe article discuses systems whose control circuit contains thyristor converters or a special type of indirect control system. An example of constructing self-oscillations in a system describing the behavior of electrical devices using such elements in a control loop is given.
Alferov G., Ivanov G., Korolev V.
openaire +2 more sources
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Chronic kidney disease is a growing public health problem worldwide, and the number of patients requiring renal replacement therapy is steadily increasing. Türkiye has experienced a similar rise in both the incidence and prevalence of renal replacement therapy over the past decades; however, national‐level projections of future ...
Arzu Akgül +2 more
wiley +1 more source
Comparison of multiple stage braking circuits for wind driven generators [PDF]
, 2016 This paper presents multiple stage braking circuits for wind turbines with a permanent magnet synchronous generator. The system combines both passive converter circuit coupled to a resistive braking circuit.
Valchev, Vencislav Cekov +2 more
core +1 more source
FEBS Letters, EarlyView.Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi +5 more
wiley +1 more source
Control strategy for direct-drive wind power system under asymmetric grid voltage sag
Gong-kuang zidonghua, 2014 In view of problems of DC side overvoltage, grid-connected current distortion and grid-connected power fluctuation existed in grid-connected operation of direct-drive wind power system under asymmetric grid voltage sag, superconducting magnetic energy ...
DONG Ruihong +3 more
doaj +1 more source
Energies, 2020 A power take-off (PTO) system for an oscillating water column (OWC) wave energy converter comprises a turbine-generator-power converter. In this study, only the topologies of the power converter that affect the load control algorithm are compared.
Roh Chan +5 more
doaj +1 more source
Zhongguo dianli, 2022 As the key device of the hybrid microgrid, the interlinking converter is related to the efficiency and reliability of the microgrid operation. Based on the normalized droop control, a dual-threshold window control strategy for two-stage interlinking ...
huaiyu YUE, Shasha LIU, Qiliang WU
doaj +1 more source
Optimization of DC - DC boost converter using fuzzy logic controller [PDF]
, 2013 DC-DC converters are electronic devices used to change DC electrical power efficiently from one voltage level to another. Operation of the switching devices causes the inherently nonlinear characteristic of the DC-DC converters including one known as
Soluman Ahtiwish, Aimen Khalifa
core
Comprehensive steady state analysis of bidirectional dual active bridge DC/DC converter using triple phase shift control [PDF]
, 2014 Several papers have been published recently on TPS control of dual active bridge (DAB) converter, however, no complete study of the converter operation behaviour exists, that takes into account all switching modes in both charging and discharging ...
Aboushady, A.A. +3 more
core +3 more sources