Results 21 to 30 of about 878,932 (247)

Aberrant Pancreatic Tissue in a Mediastinal Enteric Duplication Cyst: A Rarity with Review of Literature

open access: yesCase Reports in Gastrointestinal Medicine, 2017
Mediastinal enteric duplication cysts are a rare congenital malformation encountered mainly in neonates and infants. It is a distinct entity within the family of foregut duplication cysts.
Meha Mansi   +4 more
doaj   +1 more source

An Unusual Mini-BAL Quasar at z=4.59 [PDF]

open access: yes, 1999
The z=4.591 quasar PC 1415+3408 exhibits very strong associated metal-line absorption from the N V (1238,1242), Si IV (1393,1402), and C IV (1548,1550) doublets spanning the velocity interval -1700 < v < 0 km/s.
Churchill, Christopher W.   +3 more
core   +2 more sources

Multilevel Inverter Based on a Dual Two-Level Nine-Switch Converter for a Dual Three-Phase or Six-Phase Motor Drive System

open access: yesIEEE Access
The nine-switch inverter is considered as a very interesting solution for three-phase dual output applications, such as dual three-phase or six-phase motor drive systems.
V. Fernao Pires   +5 more
doaj   +1 more source

Shigella sonnei Sepsis in an Infant: A Case Report [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2017
Shigella bacteraemia is a complication of gastroenteritis caused by Shigella spp. which occurs mainly in immunocompromised children. Other risk factors may include young malnourished children, patients with chronic disease, post transplant patients etc.
Charu Nayyar   +3 more
doaj   +1 more source

Polarization properties of broad absorption line QSOs : new statistical clues [PDF]

open access: yes, 2004
We report the results of statistical tests performed on a sample of 139 broad absorption line (BAL) QSOs with good quality optical spectra and/or optical polarization data.
Angonin   +81 more
core   +1 more source

Is there a connection between Broad Absorption Line Quasars and Narrow Line Seyfert 1 galaxies?

open access: yes, 2014
We consider whether Broad Absorption Line Quasars (BAL QSOs) and Narrow Line Seyfert 1 galaxies (NLS1s) are similar, as suggested by Brandt & Gallagher (2000) and Boroson (2002).
Grupe, Dirk, Nousek, John A.
core   +1 more source

On the Implementation of Fuzzy VMC for an Under Actuated System

open access: yesIEEE Access, 2019
Most of control strategies are based on complex mathematical equations and the success of them is directly related to the precise acquisition of the mathematical model of the system.
Sabri Bicakci
doaj   +1 more source

X-ray Observations of Gravitationally Lensed Quasars; Evidence for a Hidden Quasar Population [PDF]

open access: yes, 1999
The large magnification factors of gravitationally lensed (GL) systems allow us to investigate the properties of quasars with X-ray luminosities that are substantially lower than those of unlensed ones and also provide an independent means of estimating ...
Bade N.   +11 more
core   +2 more sources

A Single-Switch DC-DC Nonisolated Boost and Buck-Boost Converters With Wide Voltage Gain for Unipolar and Bipolar DC Microgrids

open access: yesIEEE Open Journal of Power Electronics
DC microgrids have begun to play a significant role within the broader landscape of the electric distribution systems. There are different structures for these microgrids in which their inherent structural characteristics require the development of novel
V. Fernao Pires   +4 more
doaj   +1 more source

The rest-frame ultraviolet properties of radio-loud broad absorption line quasars

open access: yes, 2012
We recently presented radio observations of a large sample of radio-loud broad absorption line (BAL) quasars from the SDSS and FIRST surveys, as well as a well matched sample of unabsorbed quasars, primarily to measure their radio spectral indices and ...
Allen   +54 more
core   +1 more source

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