Results 71 to 80 of about 7,010,769 (298)

Study on micromechanism of water absorption and its softening effect on shale rock in deep coal measures

open access: yes矿业科学学报, 2019
Water absorption experiments under different water pressures were carried out on a series of shale samples collected from Shenyang of Liaoning province using a self-developed hydrophilic experimental system.At the same time,X-ray diffraction,high ...
Zhang Na   +4 more
doaj   +1 more source

Vine‐Inspired Soft Robotics: Materials, Actuations, and Emerging Applications

open access: yesAdvanced Science, EarlyView.
Vine‐inspired robots grow from the tip, enabling navigation through confined spaces with minimal disturbance. This Review summarizes material and actuation strategies for vine‐inspired growth, key functions including steering, retraction, attachment, branching, and variable stiffness, and emerging applications spanning medical intervention, confined ...
Jiahao Wu   +7 more
wiley   +1 more source

Analysis of the dynamic behaviour of the hangingwall beam during a seismic event [PDF]

open access: yes, 1992
Bibliography: leaves 68-72.In a deep-level gold mine planes of weakness oriented parallel to the reef allow the hangingwall to separate from adjacent rock strata. The hangingwall then acts as a separate beam supporting only its selfweight. Mining-induced
Daehnke, A
core   +1 more source

Ground vibration from underground railways: how simplifying assumptions limit prediction accuracy [PDF]

open access: yes, 2010
Noise and vibration from underground railways is a documented disturbance to individuals living or working near subways. Much work has been done to understand and simulate the dynamic interactions between the train, track, tunnel and soil resulting in ...

core   +2 more sources

Rhizodeposition Drives One Third of Belowground Carbon Input in Agroecosystems

open access: yesAdvanced Science, EarlyView.
This study quantifies photosynthesized C allocation in the plant–soil system across six crop types: barley, wheat, maize, rice, legumes and grasses. It reports C partitioning into shoot respiration, shoot‐C, root‐C, net rhizodeposition and root‐derived CO2, providing standardized percentage averages and GPP‐derived absolute values as a robust baseline ...
Zhengjun Yan   +10 more
wiley   +1 more source

Study on sandstone fragments from impact rockburst experiments

open access: yes矿业科学学报, 2018
Impact rockburst is induced by the combined static and dynamic loads after excavation.There are two types of impact rockburst experiments,one is induced by changing the static load and another is induced by changing the amplitude of dynamic load.The ...
Liu Dongqiao   +4 more
doaj   +1 more source

Re‐Thinking Electronic Circuit Design Through Emerging Reconfigurable Field Effect Transistors

open access: yesAdvanced Science, EarlyView.
Graphical illustration of reconfigurable field effect transistor (RFET) operation modes, including n‐type, p‐type, and ambipolar transport, as well as their areas of application discussed in this review: digital circuit design, analog circuit design, post‐Shannon computing, and sensing. ABSTRACT Reconfigurable field‐effect transistors, short RFETs, are
Jens Trommer   +19 more
wiley   +1 more source

The Study of the Supernormal Mechanical Properties of Giant NPR Anchor Cables

open access: yesShock and Vibration, 2020
Due to the frequent occurrence of geological disasters, such as geological faults, tectonic activities, and local activities, the study of a cable structure capable of resisting large deformations and of absorbing energy is investigated. The plane length
ZhiGang Tao   +4 more
doaj   +1 more source

Influence of Moisture Content on Creep Mechanical Characteristic and Mic-Fracture Behavior of Water-Bearing Coal Specimen

open access: yesGeofluids, 2022
The most challenging aspect of constructing an underground reservoir is ensuring that the safety coal pillar has long-term stability. It is of great significance to study the creep mechanical behavior of coal pillars under water-rock interaction for the ...
Zhong Zhao   +5 more
doaj   +1 more source

Geomechanics and Geotechnical Engineering Problems in the Design and Construction of Underground Buildings

open access: yes
This Reprint aims to showcase the recent advances in research related to geomechanics and geotechnical engineering problems in the design and construction of underground buildings and present some scientific issues and solutions encountered in tunnel ...

core   +1 more source

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