Results 121 to 130 of about 328,347 (250)

Investigation on the mechanical behavior of the multiple‐layered lining structure of a water conveyance tunnel with high internal water pressure

open access: yesDeep Underground Science and Engineering, EarlyView.
This study presents large‐scale similarity model testing (geometric ratio 3.6) of an innovative multiple‐layered lining system—comprising exterior precast segments, middle self‐compacting concrete, and an interior steel pipe—for high‐pressure (0.75 MPa) water conveyance tunnels.
Ramin Asadi   +4 more
wiley   +1 more source

Systematic study of effect of cross-drafts and nozzle diameter on shield gas coverage [PDF]

open access: yes, 2013
A shield gas flow rate of 15–20 L min21 is typically specified in metal inert gas welding, but is often adjusted to as high as 36 L min21 by welders in practice. Not only is this overuse of shield gas wasteful, but uncontrolled high gas flows can lead to
Campbell, Stuart   +5 more
core  

Mitigating surcharge‐induced column‐head cracking in double‐deck shield tunnels using hyperelastic bearing joints

open access: yesDeep Underground Science and Engineering, EarlyView.
A staged three‐dimensional nonlinear soil–structure interaction (SSI) model is established, in which the initial geostress state, tunnel excavation, lining installation, delayed activation of the internal frame, and subsequent surcharge loading are simulated sequentially.
Xinyu Liu   +3 more
wiley   +1 more source

Substantiation of the Parameters of the Tunnel Lining of the Running Tunnel During Shield Penetration

open access: yes
UKR: Магістерська робота виконана на 60 сторінках, містить 17 ілюстрацій, 5 таблиць та 12 використаних джерел. В магістерській роботі виконано варіантне проєктування оправи перегінного тунелю, що споруджується щитовим способом.
Москвич, Олександр Романович
core   +1 more source

Bio‐based tannin‐loaded layered double hydroxides in epoxy coatings for smart corrosion protection of steel in underground infrastructure

open access: yesDeep Underground Science and Engineering, EarlyView.
This study presents a sustainable smart‐coating strategy for protecting underground steel infrastructures from chloride‐induced corrosion. Zinc‐aluminum layered double hydroxides (LDHs) and tannin‐loaded LDHs (LDH–TA) were incorporated into an epoxy matrix to provide both enhanced barrier properties and active, pH‐responsive inhibition.
Veerle Vandeginste   +3 more
wiley   +1 more source

Molecular Modification Strategies for CO2 Electroreduction to C2+ Products: Classifications, Mechanisms, Advances, and Perspectives

open access: yesEcoEnergy, EarlyView.
This review comprehensively outlines molecular modification strategies for steering CO2 electroreduction toward C2+ products, including the classification of diverse molecular structures, elucidation of their roles in microenvironment regulation, dissection of C–C coupling pathway engineering, and forward‐looking perspectives on machine learning and ...
Lingling Peng, Hanwen Liu, Tianyou Peng
wiley   +1 more source

High‐Voltage Stability of LiCoO2 Cathode Materials Composited With Vanadium‐Based Glass Coatings

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Vanadium‐based glasses show fluidity and good wettability toward other materials at low temperatures. The controlled precipitation of nanocrystals in vanadium‐based glasses enhances the material's mechanical properties and electrical conductivity. The VPFL coatings bond to the LiCoO2 interface via chemical bonds.
Xu Wang   +9 more
wiley   +1 more source

The Birnessite Structure: A Versatile Electrode Platform for Advanced Electrochemical Energy Storage

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Birnessite attracts considerable attention for electrochemical energy storage owing to its layered structure, natural abundance, and environmentally friendliness. This review systematically summarizes its synthesis mechanisms, modification strategies, and applications across diverse energy storage systems.
Tong Wang   +8 more
wiley   +1 more source

Home - About - Disclaimer - Privacy