Results 21 to 30 of about 355,650 (306)

Numerical Simulation of Nanosilica Sol Grouting for Deep Tunnels Based on the Multifield Coupling Mechanism

open access: yesGeofluids, 2021
Grouting is an effective technical way for the construction of deep tunnels in unfavorable geological conditions. The fluid-solid-chemical coupling mechanism of grouting process is analyzed from the following three aspects: influence of physical ...
Dongjiang Pan   +7 more
doaj   +1 more source

A Solution of Subgrade Modulus for Response Displacement Method of Circular Underground Structures

open access: yesShock and Vibration, 2021
In the seismic analysis and design of the underground structure, the response displacement method, as a pseudostatic method, has been widely adopted for its solid theoretical background, clear physical concept, and ease of implementation.
Wei Wang   +6 more
doaj   +1 more source

majaczech/wind-tunnel: 3D Printed Wind Tunnel

open access: yes, 2022
3D Printed Wind Tunnel This is 3D printed wind tunnel with Arduino-based unit. This source describes Open Hardware and is licensed under the CERN-OHL-S v2 Experience with Arduino platform is required and supervision from a qualified electric engineering
majaczech
core   +1 more source

Risk Assessment System Based on Fuzzy Composite Evaluation and a Backpropagation Neural Network for a Shield Tunnel Crossing under a River

open access: yesAdvances in Civil Engineering, 2020
Constructing a shield tunnel that crosses under a river poses considerable safety risks, and risk assessment is essential for guaranteeing the safety of tunnel construction. This paper studies a risk assessment system for a shield tunnel crossing under a
Xiao Liang   +4 more
doaj   +1 more source

Tunneling magnetothermopower in magnetic tunnel junctions [PDF]

open access: yesPhysical Review B, 2014
Thermally induced spin-dependent transport across magnetic tunnel junctions (MTJs) is theoretically investigated. We analyze the thermal analog of Slonczewski's model (as well as its limiting case—Julliere's model) of tunneling magnetoresistance and obtain analytical expressions for the junction thermopower and the tunneling magnetothermopower (TMT ...
Lopez-Monis, Carlos   +2 more
openaire   +2 more sources

Low-resistance spin-dependent tunnel junctions with HfAlOx barriers for high-density recording-head application [PDF]

open access: yes, 2002
Spin-dependent tunnel junctions with the structure (Ta 70 /spl Aring//NiFe 70 /spl Aring//MnIr 80 /spl Aring//CoFe 35 /spl Aring//HfAlO/sub x//CoFe 35 /spl Aring//NiFe 40 /spl Aring//TiW(N) 150 /spl Aring/) were fabricated on top of 600-/spl Aring/-thick
Snoeck, E.   +4 more
core   +1 more source

Investigation on Seismic Response of Long-Span Special Steel Truss Cable-Stayed Bridge

open access: yesAdvances in Civil Engineering, 2022
Due to the small self-weight of the steel truss cable-stayed bridge with a single tower and a single cable plane, the torsional stiffness and wind stability of the structure are reduced. The arrangement of the deck type makes the mechanical properties of
Yong Zeng, Xueqin Li, Yutong Zeng
doaj   +1 more source

Modelling tunnel thrusters for autonomous underwater vehicles [PDF]

open access: yes, 2008
With 900 Autonomous Underwater Vehicles (AUVs) required over the next decade (Newman et al., 2007) existing survey-style AUVs need improved utilization factors.
Stevenson, P., Hearn, G.E., Palmer, A.
core   +3 more sources

Design and performance of an open jet wind tunnel for aero-acoustic measurement [PDF]

open access: yes, 2009
This paper presents the design and performance of an open jet, blow down wind tunnel that was newly commissioned in the anechoic chamber at the ISVR, University of Southampton, UK. This wind tunnel is intended for the measurement of airfoil trailing edge
Chong, T.P.   +5 more
core   +1 more source

The Third Quantization: To Tunnel or Not to Tunnel? [PDF]

open access: yesGalaxies, 2018
Within the framework of the third quantization, we consider the possibility that an initially recollapsing baby universe can enter a stage of near de Sitter inflation by tunnelling through a Euclidean wormhole that connects the recollapsing and inflationary geometries. We present the solutions for the evolution of the scale factor in the Lorentzian and
Mariam Bouhmadi-López   +3 more
openaire   +4 more sources

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