Results 51 to 60 of about 7,296,413 (350)

The HIT Network for Children and Adolescents With CNS Tumors Facilitates Improvements of Diagnostic Assessments, Multimodal Treatments, Individual Counseling, and Research in Germany, Austria, and Switzerland

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background The HIT network was established in 2000 to create a population‐based structure aiming to improve survival rates and reduce late effects for children with central nervous system (CNS) tumors by conducting comprehensive clinical trials.
Stefan Rutkowski   +59 more
wiley   +1 more source

Study of Special Unbalanced Load Modes of New Double-Autotransformer of the Flexible Alternating Current Link [PDF]

open access: yesProblems of the Regional Energetics
The purpose of the work is study of special asymmetric modes of new three-phase autotrans-former device for flexible connection of alternative current power systems.
Bosneaga V., Suslov V.
doaj   +1 more source

Imaging of High‐Risk Neuroblastoma: Recommendations From SIOPEN Radiology and Nuclear Medicine Specialty Committees

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Neuroblastoma is the most common extracranial solid tumor in early childhood. Its clinical behavior is highly variable, ranging from spontaneous regression to fatal outcome despite intensive treatment. The International Society of Pediatric Oncology Europe Neuroblastoma Group (SIOPEN) Radiology and Nuclear Medicine Specialty Committees ...
Annemieke Littooij   +11 more
wiley   +1 more source

Expanding the Scope: Modified Fortescue Theory for Frequency Unbalance Resolution in Control Strategies

open access: yesMathematics
To analyze unbalanced electrical systems, the mathematical technique “symmetrical components method” developed by Charles LeGeyt Fortescue in the early 20th century has been very successful in this field.
Karim Mansouri   +4 more
doaj   +1 more source

A Study of Symmetrical and Unsymmetrical Short Circuit Fault Analyses in Power Systems

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2019
In this study, thecommon symmetrical and unsymmetrical short circuit faults in power systems areanalyzed detailed. Unlike the similar studies in the literature, metallic faultconditions for unsymmetrical faults are also given in the paper additionally ...
Yılmaz Yıldırım, Faruk Yalçın
doaj   +1 more source

Protection Coordination Method Using Symmetrical Components in Loop Distribution System

open access: yesEnergies, 2021
Power utilities worldwide commonly use the radial distribution system because of its advantages of being simple in structure and having relatively inexpensive installation costs.
Jung-Hun Lee   +4 more
doaj   +1 more source

On First-Order Generalized Maxwell Equations

open access: yes, 2009
The generalized Maxwell equations including an additional scalar field are considered in the first-order formalism. The gauge invariance of the Lagrangian and equations is broken resulting the appearance of a scalar field.
Ahlers M.   +10 more
core   +1 more source

Carcinomas and Carcinoid Tumors of the Lungs and Bronchi in Children and Adolescents: The EXPeRT Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Primary lung carcinomas and bronchial carcinoid tumors (BC) are very rare malignancies in childhood. While typical BC and mucoepidermoid carcinomas are mostly low‐grade, localized tumors with a more favorable prognosis than in adults, necessitating avoidance of overtreatment, adenocarcinomas of the lung are often diagnosed at advanced disease ...
Michael Abele   +19 more
wiley   +1 more source

Impact of Apparent Reactance Injected by TCSR on Distance Relay in Presence Phase to Earth Fault

open access: yesAdvances in Electrical and Electronic Engineering, 2013
This research paper presents the impact study of apparent reactance injected by series Flexible AC Transmission System (FACTS) i.e. Thyristor Controlled Series Reactor (TCSR) on the measured impedance of a 400 kV single electrical transmission line in ...
Mohamed Zellagui, Abdelaziz Chaghi
doaj   +1 more source

Spherically Symmetric solutions in Multidimensional Gravity with the SU(2) Gauge Group as the Extra Dimensions

open access: yes, 2001
The multidimensional gravity on the principal bundle with the SU(2) gauge group is considered. The numerical investigation of the spherically symmetric metrics with the center of symmetry is made.
Dzhunushaliev V. D.   +6 more
core   +1 more source

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