Results 51 to 60 of about 20,397 (220)

Noninvasive Measurement of [¹¹C]PiB Distribution Volume Using Integrated PET/MRI

Diagnostics, 2020
A noninvasive image-derived input function (IDIF) method using PET/MRI was applied to quantitative measurements of [11C] Pittsburgh compound-B (PiB) distribution volume (DV) and compared with other metrics.
Hidehiko Okazawa, Masamichi Ikawa, Tetsuya Tsujikawa, Akira Makino, Tetsuya Mori, Yasushi Kiyono, Hirotaka Kosaka   +6 more
doaj   +1 more source

Enhancement of DFIG-Wind Turbine’s LVRT capability using novel DVR based Odd-nary Cascaded Asymmetric Multi-Level Inverter

Engineering Science and Technology, an International Journal, 2017
One of the most prominent issues relevant to Doubly Fed Induction Generator (DFIG) is augmentation of its Low Voltage Ride Through (LVRT) capability. Dynamic Voltage Restorer (DVR) is a series kind of Distributed-Flexible AC Transmission Systems (D-FACTS)
A.D. Falehi, M. Rafiee
doaj   +1 more source

Lithium‐Ion Battery Safety Evaluation by Quantifying Lithium Plating Degree Based on Pressure Signals

Advanced Science, EarlyView.
Low N/P cells enable controllable lithium plating, allowing the lithium plating degree (DLi) to be quantified and linked to thermal safety. Pressure signals during calibration provide a non‐destructive route to diagnose DLi, while thermal response tests define safety levels and management strategies. The framework remains applicable in commercial 12 Ah
Haonan Liu, Jiangong Zhu, Wenyuan Weng, Bin Shen, Wenjun Fan, Yang Wang, Huapeng Lu, Wuliyasu He, Chunjing Lin, Xuezhe Wei, Haifeng Dai   +10 more
wiley   +1 more source

Implementation and evaluation of a new dvr topology with ac link for series compensation

, 2020
This paper introduces a new three-phase dynamic voltage restorer (DVR) working in series compensation with an AC link, called AT-DVR. One of the main features of AT-DVR is an AC/AC buck converter, which is used to obtain the AC voltage for compensation ...
López Sotelo, Jesús Alfonso, Posada, Johnny, Palacios Duarte, Juan Esteban, Bolaños Moreno, Franklyn Hercilio   +3 more
core   +1 more source

Strategies to reduce sample sizes in Alzheimer’s disease primary and secondary prevention trials using longitudinal amyloid PET imaging

Alzheimer’s Research & Therapy, 2021
Background Detecting subtle-to-moderate biomarker changes such as those in amyloid PET imaging becomes increasingly relevant in the context of primary and secondary prevention of Alzheimer’s disease (AD).
Isadora Lopes Alves, Fiona Heeman, Lyduine E. Collij, Gemma Salvadó, Nelleke Tolboom, Natàlia Vilor-Tejedor, Pawel Markiewicz, Maqsood Yaqub, David Cash, Elizabeth C. Mormino, Philip S. Insel, Ronald Boellaard, Bart N. M. van Berckel, Adriaan A. Lammertsma, Frederik Barkhof, Juan Domingo Gispert   +15 more
doaj   +1 more source

Hyperfields, truncated DVRs, and valued fields [PDF]

Journal of Number Theory, 2020
For any two complete discrete valued fields $K_1$ and $K_2$ of mixed characteristic with perfect residue fields, we show that if the $n$-th valued hyperfields of $K_1$ and $K_2$ are isomorphic over $p$ for each $n\ge1$, then $K_1$ and $K_2$ are isomorphic.
openaire   +3 more sources

On decoding of DVR-based linear network codes [PDF]

Applicable Algebra in Engineering, Communication and Computing, 2015
The conventional theory of linear network coding (LNC) is only over acyclic networks. Convolutional network coding (CNC) applies to all networks. It is also a form of LNC, but the linearity is w.r.t. the ring of rational power series rather than the field of data symbols. CNC has been generalized to LNC w.r.t. any discrete valuation ring (DVR) in order
Qifu Tyler Sun, Shuo-Yen Robert Li
openaire   +3 more sources

Serum Chitotriosidase Links to Activated Glia at Chronic Active Lesion Rims in Multiple Sclerosis Brain

Annals of Neurology, EarlyView.
Objective The objective of this study was to explore the association between 18 kDa translocator protein (TSPO)‐positron emission tomography (PET)–measurable glial activation and serum chitotriosidase (CHIT1) in people with multiple sclerosis (pwMS), and its expression in postmortem MS brain tissue.
Venla Ahola, Maija Saraste, Edoardo Pedrini, Joel Tuomaala, Luzia Buchholz, Markus Matilainen, Johanna Lindenberg, Eeva‐Christine Brockmann, Maria Sofia Martire, Sofia Sandgren, David Leppert, Jens Kuhle, Tanja Kuhlmann, Martina Absinta, Laura Airas   +14 more
wiley   +1 more source

Clock Genes Regulate Ca2+ Signaling and Mitochondrial Bioenergetics to Inhibit Sjögren Disease

Arthritis &Rheumatology, EarlyView.
Objective Although Ca2+ signaling and metabolism have been identified as key determinants for the development of Sjögren disease (SjD), the intricate connection between them and salivary gland physiology remains poorly understood. Methods Fluorescence‐based Ca2+ imaging, RNA sequencing, and mitochondrial activity were used to investigate the effects of
Viktor R. Drel, Manigandan Venkatesan, Rahul S. Jasrotia, Yuyang Sun, Viviane Nascimento da Conceicao, Neelanjan Vishnu, Shankara N. Varadarajan, Venugopal R. Bovilla, Rajender K. Motiani, Shobhan Gaddameedhi, Bibhuti B. Mishra, Muniswamy Madesh, Brij B. Singh   +12 more
wiley   +1 more source

PQ Improvement by Moderation of Multi-Level Inverter Controlling Techniques and Intensifying the Performance of DVR

Advances in Electrical and Electronic Engineering, 2015
A novel control scheme is proposed for the enhancement of Dynamic Voltage Restorer (DVR) performance. In this paper, the moderation of inverter controlling techniques has been adopted to intensify the DVR characteristics and thereby to improve the Power ...
Vinay Kumar Awaar, Praveen Jugge, Tarakalyani S   +2 more
doaj   +1 more source