Results 211 to 220 of about 145,655 (304)

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

Method for Extracting Impact Signals in Falling Weight Deflectometer Calibration Based on Frequency Filtering and Gradient Detection. [PDF]

Sensors (Basel)
Cai J, Luo Y, Zhang B, Chen L, Liu L.
europepmc   +1 more source

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Multifaceted characteristics of acoustic emission damage and precursor indicators of instability in sandstone under cyclic impact loading. [PDF]

Sci Rep
Hong X, Pan C, Zuo Y, Li S, Cao J, Liu Q, Yan L, Li X, Han T.   +8 more
europepmc   +1 more source

Freshwater fish functional diversity shows diverse responses to human activities, but consistently declines in the tropics

Ecography, EarlyView.
Freshwater environments are intertwined with human activities and the consequence has been environmental degradation and biodiversity loss. Fish provide key ecological and economic benefits, and fish abundance and diversity can be affected by human activities resulting in functional diversity (FD) changes that might scale up to ecosystem impacts ...
Romullo Guimarães de Sá Ferreira Lima, Bruno Eleres Soares, Marc Cadotte, Míriam Pilz Albrecht   +3 more
wiley   +1 more source

Research on the simulation methods and shock resistance performance of energy absorbing columns in rockburst roadway supports. [PDF]

Sci Rep
An D, Fan J, Song Y, Xu H.
europepmc   +1 more source

‘Please Continue’: Implicit Communication and the Experimenter's Interventions in Stanley Milgram's Obedience to Authority Series

European Journal of Social Psychology, EarlyView.
ABSTRACT Stanley Milgram's ‘Obedience to Authority’ study demonstrated that an experimenter can lead participants to obey orders that seemingly causes others harm. To examine the nature of the experimenter's influence, we analysed the experimenter's non‐procedural interventions in 136 sessions, across four experimental conditions.
David Kaposi, Zoltan Kacsuk, Peter Hegarty   +2 more
wiley   +1 more source

A Novel Test Set-Up for Direct Evaluation of Impact and Energy Absorption for Lattices. [PDF]

Materials (Basel)
Vaziri Sereshk MR, Kwiecien KL, Lodhi AT, Mahjoob M.   +3 more
europepmc   +1 more source

Policy Entrepreneurs and the Design of Administrative Reform: A Conceptual Framework and the Israeli Case

European Policy Analysis, EarlyView.
ABSTRACT What is the role of policy entrepreneurs in promoting the design of public administrative reform? We present a conceptual framework for assessing the influence of policy entrepreneurs on public administrative reform. We start by proposing a typology of the various policy entrepreneurs active in the administrative reform arena.
Nissim Cohen
wiley   +1 more source

Real-Time Defect Identification in Automotive Brake Calipers Using PCA-Optimized Feature Extraction and Machine Learning. [PDF]

Sensors (Basel)
Lee J, Woo U, Lee MH, Kim JY, Choi H, Oh T.   +5 more
europepmc   +1 more source