Results 51 to 60 of about 92,688 (313)

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright, Scotty G. McKay, Jean Ramos Bou, Fen Bao, Vivian B. Truong, Chenyang Li, Li Jiang, Anza B. Memon, E. Mark Haacke, Yulin Ge, Yongsheng Chen   +10 more
wiley   +1 more source

Simulation analysis of the magnetic and thermal performance of large-capacity medium-frequency transformers and improvement in shielding structure

Zhejiang dianli
Large-capacity medium-frequency transformers （MFTs） offer advantages such as compact size， light weight， and high power density， but they also face significant challenges related to magnetic and thermal performance.
TIAN Fengqi, DU Zhenbin, WANG Jianmin, SHI Jian   +3 more
doaj   +1 more source

Dynamic Reliability Analysis of Flying Car Gear Transmission System

, 2021
As a new type of transportation for future urban air transportation，flying cars are intelligent，efficient and convenient. As a key component of the power transmission of a flying car，the safety and reliability of gear transmission has become a difficult ...
Genshen Liu, Huaiju Liu, Caichao Zhu, Yong Yu, Tianyu Mao   +4 more
core   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

Advanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera, Philippe Marrec, A. Jorge Parola, Madalena Dionísio, Hugo Águas, Andreia F. M. Santos, Hamed Pourkheirollah, Donald Lupo, César A. T. Laia   +8 more
wiley   +1 more source

A Reliability Evaluation Method for Independent Small Offshore Electric Systems

Energies, 2021
As an independent power system, the reliability of offshore electric system is closely related to the smooth progress of offshore oil production. There are two major characteristics of this type of power system.
Jun Guan, Wei Du, Xiuli Wang, Xianjue Luo, Xingyang Liu, Xue Li   +5 more
doaj   +1 more source

A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection

Advanced Engineering Materials, EarlyView.
A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan, Shuvra Saha, Sumit Hassan Eshan, Rinku Basak, Md. Nahian Al Subri Ivan, Ahmed Murtuza Saleque, Raja Tariqul Hasan Tusher, Sadia Zabin, Md. Abdur Rahman, Yuen Hong Tsang   +9 more
wiley   +1 more source

Federated reinforcement learning for Short-Time scale operation of Wind-Solar-Thermal power network with nonconvex models

International Journal of Electrical Power & Energy Systems
To schedule power sources operated by different entities in a short-time scale considering nonconvex generation cost and deep peak regulation (DPR) service constraints, this paper proposes an FRL-based multiple power sources coordination framework in ...
Yao Zou, Qianggang Wang, Qinqin Xia, Yuan Chi, Chao Lei, Niancheng Zhou   +5 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

A Relay-Aided Transmission Power Control Method in Wireless Body Area Networks

IEEE Access, 2017
Reliability is one of the most important communication metrics in wireless body area networks especially for medical applications. However, traditional one-hop transmission power control methods failed to guarantee the reliability when the transmission ...
Yu Zhang, Bing Zhang
doaj   +1 more source

Transmission Policy in the United States [PDF]

This paper provides an overview of the development of electric power transmission access, pricing and investment policies in the U.S. over the last 15 years and evaluates the current state of those policies. It includes a discussion of pre-liberalisation
Joskow, P.L.
core   +2 more sources