Results 31 to 40 of about 2,727 (257)

Risk Analysis of Harmful Gas in Deep Buried Long Tunnel Construction [PDF]

Proceedings of the International Conference on Advances in Energy, Environment and Chemical Engineering, 2015
The emergence of harmful gas will bring serious difficulties to the tunnel construction, improper handling can easily lead to accidents. In order to evaluate the possibility of harmful gas in the tunnel, the basic characteristics of harmful gas in tunnel are analyzed from three aspects, that is spatial distribution, inflammable and explosive property ...
Caihong Jia, Yanxi Zhao
openaire   +1 more source

Research on the Effect of Coupling Structure of Prestressed Anchor Rods and Steel Wave-Profile Plates on the Support of High-Stress Soft Rock Tunnel

Engineered Science
The problem of deep-buried tunnels with high ground stress and large deformation in soft rock has always been a major technical challenge that urgently needs to be solved in tunnel engineering.
Gan Li, Yong Li
doaj   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

FEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey, Miriam Livier Llamas‐García, Gabriela M. Montero‐Morán, Leticia Santos, Samuel Lara‐González   +4 more
wiley   +1 more source

Evaluation of Rock Vibration Generated in Blasting Excavation of Deep-buried Tunnels

KSCE Journal of Civil Engineering, 2018
The experimental tunnels of the China Jinping Underground Laboratory are constructed in a maximum overburden depth of 2375 m and subjected to extremely high in situ stress more than 50 MPa. When these deep-buried tunnels are excavated with the method of drill and blast, the surfaces created by blasting are generated almost instantaneously, and thus the
Jianhua Yang, Wenbo Lu, Peng Li, Peng Yan   +3 more
openaire   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Analytical Solution for Surrounding Rock Pressure of Deep-Buried Four-Hole Closely Spaced Double-Arch Tunnel

Mathematics
Research on the calculation method of deep-buried surrounding rock pressure is an important subject in engineering mathematics. The existing calculation methods are mainly the two-hole closely spaced tunnel, double-arch tunnel, three-hole closely spaced ...
Xianghao Sun, Qi Shi, Jian Wu, Dunwen Liu, Shan Wu   +4 more
doaj   +1 more source

Estimation Method for an In Situ Stress Field along a Super-Long and Deep-Buried Tunnel and Its Application

Buildings, 2023
Aiming at some stress-induced failure phenomena in surrounding rock that occur during the construction of super-long and deep-buried tunnels, a method for estimating the in situ stress in the tunnels based on multivariate information integration is ...
Qitao Pei, Xiaonan Wang, Lihong He, Lu Liu, Yong Tian, Cai Wu   +5 more
doaj   +1 more source

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source

Research and Application of Support Resistant Limiting Dampers in the Deep-Buried Large-Section Loess Tunnel

Advances in Civil Engineering, 2020
The paper aims to solve the problem that the primary support of the deep-buried large-section loess tunnel of the Haolebaoji-Ji’an Railway was damaged due to excessive force.
Yong Deng, Jiangsheng Xie, Shuguang Li
doaj   +1 more source