Results 21 to 30 of about 144,853 (228)

Performance modeling of industrial gas turbines with inlet air filtration system

open access: yesCase Studies in Thermal Engineering, 2015
The effect of inlet air filtration on the performance of two industrial gas turbines (GT) is presented. Two GTs were modeled similar to GE LM2500+ and Alstom GT13 E2-2012, using TURBOMATCH and chosen to operate at environmental conditions of Usan ...
Samuel O. Effiom   +2 more
doaj   +1 more source

Investigating the Axonal Magnetic Fields Corresponding to Delta and Theta Waves in the Human Brain Using Direct Detection MRI

open access: yesIEEE Access, 2021
This study showed an alternative and non-invasive method for measuring brainwaves using Magnetic Resonance Imaging (MRI) with a gradient echo - echo planar imaging (GE-EPI) sequence.
Li Sze Chow   +4 more
doaj   +1 more source

TWDM-PON With Signal Remodulation and Rayleigh Noise Circumvention for NG-PON2

open access: yesIEEE Photonics Journal, 2013
We propose and demonstrate a 40-Gb/s (4 × 10 Gb/s) downstream and 10-Gb/s (4 × 2.5 Gb/s) upstream time-wavelength-division-multiplexed passive optical network (TWDM-PON) using signal remodulation. Here, a downstream differential-phase-shift-
C. W. Chow   +4 more
doaj   +1 more source

Cross-validation study between the HRRT and the PET component of the SIGNA PET/MRI system with focus on neuroimaging

open access: yesEJNMMI Physics, 2021
Background The Siemens high-resolution research tomograph (HRRT - a dedicated brain PET scanner) is to this day one of the highest resolution PET scanners; thus, it can serve as useful benchmark when evaluating performance of newer scanners.
Julia G. Mannheim   +8 more
doaj   +1 more source

Integrated Factor Graph Algorithm for DOA-Based Geolocation and Tracking

open access: yesIEEE Access, 2020
This paper proposes a new position tracking algorithm by integrating extended Kalman filter (EKF) and direction-of-arrival (DOA)-based geolocation into one factor graph (FG) framework.
Meng Cheng   +2 more
doaj   +1 more source

Atmospheric ice nucleators active ≥ −12 °C can be quantified on PM10 filters [PDF]

open access: yesAtmospheric Measurement Techniques, 2012
Small number concentrations render it difficult to quantify ice nucleators (IN) in the atmosphere active at warm temperatures. A useful new method for IN measurement based around filter collections is proposed. It makes use of quartz filters used in 24 h
C. Alewell   +3 more
doaj   +1 more source

Influence of Adaptive Statistical Iterative Reconstructions on CT Radiomic Features in Oncologic Patients

open access: yesDiagnostics, 2021
Iterative reconstructions (IR) might alter radiomic features extraction. We aim to evaluate the influence of Adaptive Statistical Iterative Reconstruction-V (ASIR-V) on CT radiomic features. Patients who underwent unenhanced abdominal CT (Revolution Evo,
Damiano Caruso   +12 more
doaj   +1 more source

A Microfluidic Platform for Investigating Transmembrane Pressure-Induced Glomerular Leakage

open access: yesMicromachines, 2018
Transmembrane pressure across the glomerular filter barrier may underlie renal failure. However, studies of renal failure have been difficult owing to a lack of in vitro models to capture the transmembrane pressure in a controlled approach.
Ting-Hsuan Chen   +8 more
doaj   +1 more source

Data of CT bow tie filter profiles from three modern CT scanners

open access: yesData in Brief, 2019
As one of the key hardware components in Computed Tomography (CT) scanners, a bowtie filter reduces unnecessary radiation dose to the peripheries of a patient and equalizes radiation signal to the detector.
Kai Yang, Chun Ruan, Xinhua Li, Bob Liu
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

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