Results 81 to 90 of about 1,834,169 (290)
Catheterization and Cardiovascular Interventions, EarlyView.ABSTRACT Background Acquired aseptic intracardiac communications (AICCs) are rare but clinically relevant structural complications following transcatheter aortic valve implantation (TAVI), typically resulting from mechanical injury to the aortic annulus, interventricular septum, or adjacent structures.
Geza Fontos +6 more
wiley +1 more source
Carbon Energy, EarlyView.Contributed by the introduction of Cu SAs, extra electron transfer, and spin polarization to Cooh can be induced for optimizing electronic structure, contributing to fast electron conduction, enhanced capacitive reactions and accelerated ion diffusion. ABSTRACT Features of low cost and high theoretical capacity render transition metal oxides (TMOs) as ...
Qingjie Lu +10 more
wiley +1 more source
Investigation of railway wheelset profile wear by using computer simulation
MATEC Web of Conferences, 2019 The wear of rails and wheels is important problem in rail traffic. The change of the shape of the wheel profile has not only a great influence on the dynamic properties of the vehicle (like stability, safety by passing curved tracks, etc.), but also ...
Smetanka Lukáš +2 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh +12 more
wiley +1 more source
An Innovative and Efficient Method for Reverse Design of Wheel-Rail Profiles
Applied Sciences, 2018 Well-designed wheel-rail profiles are not only helpful in achieving expected dynamic vehicle performance but also in extending the service lives of wheels and rails.
Rong Chen +5 more
doaj +1 more source
Rail vehicle suspensions and components
, 2021 • Rail Car Types. • Rail Car Suspensions: Why are suspensions important; reasons for suspension design choices; freight vs. passenger designs.
Toma, Elton
core
Carbon emission assessment of tunnel infrastructures: From construction to operation
Deep Underground Science and Engineering, EarlyView.This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long +4 more
wiley +1 more source
Wheel profile design based on rail profile expansion method
Chinese Journal of Mechanical Engineering, 2008 Firstly the contact geometry of UIC high-speed wheel/rail profile SI002/UIC60 and Chinese quasi-high-speed profile LMa/CHN60 is analyzed.The analysis result shows LMa/CHN60 profile has too low degree of conformity,which would have detrimental effects on wheel/rail wear and rolling contact fatigue.So,from the view point of altering the rail contact ...
openaire +1 more source
Investigation on tunnel stability considering pipe‐roof support with transparent soil technology
Deep Underground Science and Engineering, EarlyView.This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia +4 more
wiley +1 more source
A 3D Rail Profile Acquiring Method without Coordinate Splicing
Kongzhi Yu Xinxi Jishu, 2019 For rails used in the field, factors affecting its quality include fracture, scratch, rail wear, etc., of which the rail wear can directly change the profile of the rail.
LI Jianfeng +3 more
doaj