Results 51 to 60 of about 694,153 (309)

Comparative analysis of AC, DC, and hybrid power flow methods

open access: yesNext Energy
This paper presents a comprehensive comparative analysis of alternating current (AC), direct current (DC), and hybrid AC-DC formulations for power flow (PF) analysis and optimal power flow (OPF) in power systems.
Sunil Ankeshwarapu
doaj   +1 more source

Establishing an Apheresis Medicine Program in a Resource‐Constrained Setting: A 5‐Year Experience From Lagos, Nigeria

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola   +4 more
wiley   +1 more source

Evaluation of zero-echo-time attenuation correction for integrated PET/MR brain imaging—comparison to head atlas and 68Ge-transmission-based attenuation correction

open access: yesEJNMMI Physics, 2018
Background MRI does not offer a direct method to obtain attenuation correction maps as its predecessors (stand-alone PET and PET/CT), and bone visualisation is particularly challenging.
João M. Sousa   +7 more
doaj   +1 more source

Effects of alcohol consumption on maxillofacial fractures in simple falls

open access: yesClinical and Experimental Dental Research, 2020
Objectives This study aimed to investigate the effects of alcohol consumption (AC) on maxillofacial fractures caused by falls on a level surface (simple falls).
Shunsuke Hino   +5 more
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS 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

Computational Methods for Hybrid AC/DC Networks [PDF]

open access: yes
Hybrid multiterminal AC/DC networks are gaining interest nowadays in both domains of microgrids and high-voltage direct current (HVDC) networks as they have the potential to enhance the share of distributed generation within future power grids and ...
Lambrichts, Willem
core   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

open access: yesFEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes   +3 more
wiley   +1 more source

CARRIER SIGNAL INJECTION BASED SENSORLESS CONTROL OF PERMANENT MAGNET BRUSHLESS AC MACHINES [PDF]

open access: yes, 2012
This thesis is focused on the carrier signal injection based sensorless control of Permanent Magnet (PM) Brushless AC (BLAC) machines. Based on the machine saliency property, carrier signal injection based sensorless techniques have been well developed ...
Gong, Liming
core  

An Analysis Method of AC-AC Direct Converters by Using Switch Matrix

open access: yesIEEJ Transactions on Industry Applications, 1999
This paper proposes an analysis method of AC-AC direct converters which are Matrix converter et, al.. The proposed analysis method, is described by a switch matrix and instantaneous space vectors of the input voltage and the output voltage, is uniformly able to analyze the characteristics of the AC-AC direct converters, because the output voltage range
Itoh, Jun-ichi, Fujita, Koetsu
openaire   +2 more sources

Attenuation correction using 3D deep convolutional neural network for brain 18F-FDG PET/MR: Comparison with Atlas, ZTE and CT based attenuation correction.

open access: yesPLoS ONE, 2019
One of the main technical challenges of PET/MRI is to achieve an accurate PET attenuation correction (AC) estimation. In current systems, AC is accomplished by generating an MRI-based surrogate computed tomography (CT) from which AC-maps are derived ...
Paul Blanc-Durand   +9 more
doaj   +1 more source

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