Results 61 to 70 of about 7,043,501 (306)

Energy characteristics of saturated Jurassic sandstone in western China under different stress paths

Deep Underground Science and Engineering
To study the energy evolution and failure characteristics of saturated sandstone under unloading conditions, rock unloading tests under different stress paths were conducted.
Yi Yang, Jian Lin, Yun Wu, Shilong Peng, Wanhang Shao, Lining Yang   +5 more
doaj   +1 more source

Voltage‐Reconfigurable Magneto‐Ionic Nanolayers in Dot Arrays for Probabilistic, Materials‐Engineered Security Primitives

Advanced Science, EarlyView.
A magneto‐ionic security‐by‐materials‐design strategy exploits voltage‐driven N3– migration in selectively contacted FeCoN dots, creating reconfigurable sub‐15 nm ferromagnetic sublayers with deterministic and/or probabilistic (single‐domain↔vortex) states, voltage‐tunable probabilities and fully stochastic orientation/chirality.
Irena Spasojevic, Federica Celegato, Alessandro Magni, Paola Tiberto, Jordi Sort   +4 more
wiley   +1 more source

Study on Deformation Characteristics of Surrounding Rock in Deep-Buried Tunnels of Plateau Railroads

Advances in Civil Engineering
Regarding the deformation problem of surrounding rock in deep-buried tunnels of high-altitude railways, this article adopted a combination of numerical simulation and in situ monitoring analysis methods relying on a new plateau railroad tunnel.
Ziguang Zhang, Meng Zhang, Yahui Wang, Lin Wei, Lei Zhang, Biao Leng, Yong He   +6 more
doaj   +1 more source

Hydrogeological and hydrochemical condition in planned tunnel B route of the Yogyakarta-Bawen toll road [PDF]

E3S Web of Conferences
The Yogyakarta-Bawen toll road tunnel, located in Magelang Regency, Central Java Province, is a national strategic project that connects Central Java and the Special Region of Yogyakarta.
Itsnaini Nur, Putra Doni Prakasa Eka, Indrawan I. Gde Budi   +2 more
doaj   +1 more source

UNDERGROUND ECONOMY AND FISCAL POLICIES MODELING* [PDF]

Over the last decades a growing concern over the phenomenon of the underground economy has increased attention among officials, politicians, and economists.
Albu, Lucian Liviu
core  

Groundwater Rise Sustains the World's Largest Alpine Water System Under Global Warming

Advanced Science, EarlyView.
Shallow groundwater depth (SGWD) across the non‐permafrost plains of the Qinghai–Xizang Plateau decreased at averagely 0.02 m year−1, adding 31.44 Gt of freshwater storage from 2000 to 2020 and sustaining ∼53 500 km2 of alpine ecosystems. A vadose‐zone capacity of 426.6 Gt reveals these aquifers as promising reservoirs, highlighting groundwater's ...
Jianqing Du, Zhixiang Niu, Yanfen Wang, Shirui Zhou, Youqing Yang, Xiang Wei, Haishan Niu, Yitao Zhang, Anquan Xia, Yali Liu, Yanbin Hao, Kai Xue, Bingfang Wu, Xinquan Zhao, Tandong Yao, Yiyu Chen   +15 more
wiley   +1 more source

Mechanical response characteristics and key technology of construction control of roof of long span string beam structure

Scientific Reports
The high-altitude assembly and tensioning construction of large-span beam string structures (BSS) offers numerous advantages, including structural simplicity, clear force transmission, minimal deformation, strong stability, structural adaptability, self ...
Ziguang Zhang, Cheng Zhang, Xiaopeng Li, Yida Guo, Shuai Kang, Ankang Hu   +5 more
doaj   +1 more source

Comparative Study of Construction Methods for Deeply Buried Soil Tunnels

Buildings
Deep-buried soil tunnels in weak rock strata often face severe risks, such as collapse and large deformation, making the rational selection of construction methods critical.
Ziguang Zhang, Mengqing Zhang, Lei Zhang, Lin Wei, Yong He   +4 more
doaj   +1 more source

Seismic response analysis of long shield tunnels under non-uniform excitation

Yantu gongcheng xuebao, 2020
The numerical simulation method is used to study the seismic response of the soil-tunnel system under non-uniform excitation. The aim is to explore the response laws of the underground structures under non-uniform excitation and its difference with those
WANG Guo-bo 1, 2, BA Feng1, SUN Fu-xue 2, YUAN Ming-zhi 1, HAO Peng-fei 1
doaj   +1 more source

Regulating Cells Fate and Function to Facilitate Bone Regeneration via Designing Programmable Bio‐Interactive Materials

Advanced Science, EarlyView.
This article aims to elucidate the biological mechanisms of bone repair and the evolution of material design, highlighting key cellular and molecular processes. It further proposes strategies and prospects for programmable bio‐interactive materials, which enable precisely guided bone tissue regeneration by dynamically regulating cell behavior and the ...
Qingrui Fan, Fuming Cao, Junqiang Mao, Pengbin Yin, Licheng Zhang, Jianjun Wang, Peifu Tang   +6 more
wiley   +1 more source