Results 61 to 70 of about 13,974 (295)

Influence of ultra-close undercrossing shield on deformation of existing tunnels

Yantu gongcheng xuebao
With continuous development of urban construction in recent years, many Chinese cities have successively developed and increased the construction of urban rail transit projects, and the construction of the metro engineering causes surrounding surface ...
DAI Zhengbin1, 2 , LU Yunlong1, 2
doaj   +1 more source

Experimental Study on the Soil Conditioning Materials for EPB Shield Tunneling in Silty Sand

Advances in Civil Engineering, 2020
Earth pressure balance (EPB) shield tunneling in a silty sand stratum is frequently faced with the wear of rotary cutter disc, clogging, or even collapse of workface due to its noncohesive and discrete properties of silty sand material. Soil conditioning
Chi-Hao Cheng, Shao-Ming Liao, Xiao-Bo Huo, Li-Sheng Chen   +3 more
doaj   +1 more source

Soil conditioning for EPB shield tunnelling

KSCE Journal of Civil Engineering, 2014
The use of conditioning agents that change the mechanical and hydraulic behavior of a cohesionless soil into an impervious and plastic paste is the key point for the correct management of EPB (Earth Pressure Balance) shield tunneling. The design of soil conditioning sets and the choice of the best products to be used require special laboratory tests ...
openaire   +3 more sources

Pentacene islands grown on ultra-thin SiO2 [PDF]

, 2008
Ultra-thin oxide (UTO) films were grown on Si(111) in ultrahigh vacuum at room temperature and characterized by scanning tunneling microscopy. The ultra-thin oxide films were then used as substrates for room temperature growth of pentacene.
Al-Mahboob, B.C. Riddick, B.R. Conrad, Choudhary, Conrad, E.D. Williams, Fritz, Fritz, Goldberg, Gomar-Nadal, Gotoh, Guaino, Gundlach, Hasunuma, Hasunuma, Hlawacek, Homma, Ishigami, Ju-Hyung, Jurchescu, Kitamura, Knipp, Lublow, Lublow, Malliaras, Mayer, Nabok, Neuwald, Ono, Palasantzas, Repp, Ruiz, Ruiz, Sadowski, Schroeder, Stockhausen, Teichert, Tsai, W.G. Cullen, Watanabe, Westermann, Yang   +41 more
core   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Ultra‐Sensitive Nanofiber‐Based Triboelectric Nanogenerator for Energy Harvesting and Self‐Powered Sensing

Advanced Materials, EarlyView.
A multidimensional molecular strategy optimizes the tribonegative layer by electrospinning PVDF‐HFP for dipole alignment and crystallinity, followed by 2D borophene doping to enhance conductivity and charge trapping. Integrated with Nylon‐66 nanofibers, the composite device delivers a record sensitivity of 53.8 ± 1.2 V kPa−1 at 3 Hz, enabling ultra ...
Sajib Roy, Bhaskar Dudem, Md Delowar Hussain, Vlad Stolojan, Seyedeh Sadrieh Emadian, Satheesh Krishnamurthy, Jae Sung Yun, S. Ravi P. Silva   +7 more
wiley   +1 more source

Printed 2.5D‐Microstructures with Material‐Specific Functionalization for Tunable Biosensing

Advanced Materials Technologies, EarlyView.
The 2.5D‐MiSENSE platform integrates a microstructured biosensor with an in‐line milking pipeline to enable real‐time detection of mastitis biomarkers during active milk flow. The system uses a 2.5D microengineered surface and patterned electrodes to enhance milk–sensor interaction.
Matin Ataei Kachouei, Benjamin Corl, Md. Azahar Ali   +2 more
wiley   +1 more source

Two-junction superconductor-normal metal single-electron trap in a combined on-chip RC environment

, 2011
Dissipative properties of the electromagnetic environment as well as on-chip RC filtering are shown to suppress random state switchings in the two-junction superconductor(S) - normal metal(N) electron trap. In our experiments, a local high-ohmic resistor
Alexander B Zorin, Averin D V, Ingold G L, Lotkhov S V, Saira O-P, Sergey V Lotkhov   +5 more
core   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Field measurement study on soil responses induced by small-diameter shield tunneling in soft soil

Yantu gongcheng xuebao
As cities develop, the development of urban underground space has expanded from the main roads to the smaller capillary-like areas. However, there is a lack of research on the soil response caused by small-diameter shield tunneling in soft soils. Using a
LI Demao 1, ZHANG Yuming 2, WANG Gang 1, WANG Lei 1, LU Xiaotao 3, ZHANG Zhiwei 2, CHENG Xuesong 2
doaj   +1 more source