Results 51 to 60 of about 48,270 (261)
Advanced Science, EarlyView.Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas +6 more
wiley +1 more source
Effect of the excavation clearance of an under-crossing shield tunnel on existing shield tunnels
Tunnelling and Underground Space Technology, 2018 Abstract The excavation by earth pressure balance (EPB) shield could cause stress fields varied, which is harmful to adjacent existing structures. Thus the effect of excavation clearance of the EPB shield on the settlement of existing structures should be taken into account.
Minglun Yin +4 more
openaire +2 more sources
Salt Water Drops Slide Faster: Ionic Modulation of Drop Friction
Advanced Science, EarlyView.Salt ions markedly accelerate water drops on conductive substrates coated with nanometer‐thin hydrophobic layers. Across diverse electrolytes and surfaces, higher ion concentration consistently lowers kinetic friction by reducing contact angle hysteresis.
Dongho Shin +6 more
wiley +1 more source
The Effect of Consolidation on TBM Shield Loading in Water-Bearing Squeezing Ground [PDF]
, 2018 Jamming or overstressing of the shield due to ground pressure are potential problems for tunnel boring machine (TBM) tunnelling in squeezing ground. The risk of shield jamming depends essentially on the deformation rate of the ground in the vicinity of ...
Anagnostou, G., Ramoni, M.
core
Advanced Science, EarlyView.By combining ionic nonvolatile memories and transistors, this work proposes a compact synaptic unit to enable low‐precision neural network training. The design supports in situ weight quantization without extra programming and achieves accuracy comparable to ideal methods. This work obtains energy consumption advantage of 25.51× (ECRAM) and 4.84× (RRAM)
Zhen Yang +9 more
wiley +1 more source
Reynolds and Mach number simulation of Apollo and Gemini re-entry and comparison with flight [PDF]
Reynolds and Mach numbers simulation of Apollo and Gemini reentry compared with flight ...
Boylan, D. E., Griffith, B. J.
core +1 more source
Laboratory test for EPB tunnelling assessment:results of test campaign on two different granular soils [PDF]
, 2011 Earth Pressure Balanced shields are currently the most utilized tunnelling machines throughout around the world. The possibility of using conditioning agents that change the mechanical and hydraulic behaviour of a soil, changing it into a plastic paste ...
Borio, Luca, Peila, Daniele
core
Advanced Science, EarlyView.MgF2 exhibits a speed‐dependent mechanoluminescence (ML) color distribution arising from distinct ML lifetimes, showing blue emission under slow sliding and multicolor emission under fast sliding. A promising method for evaluating ML lifetime is proposed based on the trailing effect. By synergistically integrating instantaneous and persistent ML with a
Shulong Chang +8 more
wiley +1 more source
Shuttle system ascent aerodynamic and plume heating [PDF]
, 1985 The shuttle program provided a challenge to the aerothermodynamicist due to the complexity of the flow field around the vehicle during ascent, since the configuration causes multiple shock interactions between the elements.
Foster, L. D. +2 more
core +1 more source
Advanced Science, EarlyView.Aqueous ammonium‐ion batteries leverage hydrogen‐bond‐mediated NH4+ storage in tunable transition metal compounds. Despite progress in Mn‐, V‐, Mo‐, and W‐based compounds, 2D LDHs, and MXenes, challenges like structural instability and slow kinetics persist. Future advances require robust host design, mechanistic understanding via operando studies, and
Can Li +6 more
wiley +1 more source