Results 61 to 70 of about 1,819 (220)

Study on Optimal Allocation Method of Regenerative Braking Energy Feedback System

open access: yes机车电传动, 2018
A simulation method of the urban rail traction power supply system including medium voltage energy feedback device for Xuzhou metro line 1 was introduced. The power flow analysis was carried out on the whole line power supply system, and the influence of
YANG Liqiang
doaj  

Stair‐Climbing Wheelchairs for Enhanced Mobility: A Comprehensive Review of Fundamental Mechanisms, Design Concepts, and Performance Analysis

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT People with physical disabilities face significant mobility challenges while climbing uneven surfaces and staircases. In these circumstances, traditional wheelchairs do not provide stable, safely controlled mobility, underscoring the importance of building superior stair‐climbing wheelchairs for both medical and infrastructure purposes.
Gopisetti Manikanta   +10 more
wiley   +1 more source

Four‐dimensional immuno‐mechanobiomaterials: Dynamic material cues that program host response to prevent fibrosis and enable regeneration

open access: yesVIEW, EarlyView.
Dynamic immuno‐mechanobiomaterials with time‐programmed mechanical adaptation orchestrate host responses through precise mechanotransduction and immune‐stromal regulation. These adaptive biomaterials minimize mechanical mismatch, attenuate the forign dy response and fibrosis, promote angiogenesis and controlled extracellular matrix remodeling, and ...
Gobinath Vellapalayam Manoharan   +4 more
wiley   +1 more source

With a Great Story Comes Great Responsibility: Role of Narrative in Leadership Development

open access: yesNew Directions for Student Leadership, Volume 2025, Issue 185, Page 81-87, Spring 2025.
ABSTRACT Comic books reside uniquely within American culture. Historians have contended comics are more than just sequential artwork mixed with engaging stories, but rather, a framework by which the generations make sense of who they are. These stories are a reflection of cultural conscience; a lens through which we can view the world and a mirror ...
Sean Connable
wiley   +1 more source

Operation Mode of DC Traction Power Supply System and its Feeder Protection

open access: yesJournal of Physics: Conference Series, 2021
Abstract At this stage, DC traction power supply systems are widely used in the development of China’s rail transit. In order to ensure the safety of rail transit, we need to strengthen the research work of DC traction power supply system.
openaire   +1 more source

Application Status and Development Trends of DC Ice‐Melting Devices in China's Power Grid

open access: yesIET Smart Energy Systems, EarlyView.
This paper summarises the development history and engineering application status of DC ice‐melting devices (DCIMD) in China, analyses the principles, advantages, disadvantages and adaptability of mainstream topologies and discusses the key problems and corresponding improvement directions.
Ming Lei   +6 more
wiley   +1 more source

Sino‐Mexican Encounters Before the ‘Diplomatic Opening’: Exhibition Diplomacy and Grassroots Friendship in the 1960s

open access: yesHistory, EarlyView.
Abstract During the 1960s, Mexico's Institutional Revolutionary Party (PRI) embraced Chinese overtures for a commercial opening as consistent with its anti‐imperialist posture, thereby foreshadowing the diplomatic opening to China in 1972. Yet this professed ideological pluralism was eclipsed by an underlying allegiance to the United States' anti ...
YIXIN TIAN
wiley   +1 more source

Study on Coupling Oscillation of Urban Rail Vehicle Traction System

open access: yes机车电传动, 2019
The DC power supply of urban rail vehicle was the key to good speed regulation performance of traction system. Limited by many factors such as on-board converter and harmonic suppression, the traction system was prone to DC side coupling oscillation ...
Yan MU
doaj  

The nitty‐gritty of vascular permeability in cancer: targeting blood endothelium to control metastases

open access: yesBritish Journal of Pharmacology, EarlyView.
Blood vascular permeability is a hallmark of cancer and acts as an active driver of metastatic dissemination. Metastasis accounts for the vast majority of cancer deaths, yet most work has focussed on tumour‐intrinsic traits and angiogenesis, while the specific contribution of endothelial barrier regulation to intravasation and extravasation remains ...
Pierre Boucher   +6 more
wiley   +1 more source

Integration of Renewable Energy Sources into the DC Traction Power Supply System

open access: yesEnergies
The growing importance of integrating renewable energy sources (RESs) into mainline railway traction networks stems from the sector’s substantial electricity demand, which is traditionally met by carbon-intensive thermal generation. This paper addresses the potential of wind power to enhance energy efficiency and reduce emissions in rail transport.
Iliya Iliev   +7 more
openaire   +1 more source

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