Results 51 to 60 of about 79,416 (261)

Time-sensitivity mechanism of rock stress memory properties under tensile stress

Journal of Rock Mechanics and Geotechnical Engineering, 2020
In deep underground engineering, understanding of time-related stress memory properties is critical to evaluate the in situ stress conditions of a rock mass. In this study, the time-sensitivity mechanism of the rock stress memory properties under tensile
Yuxin Ban, Xiang Fu, Qiang Xie, Jun Duan
doaj   +1 more source

Body mass and sex estimation from lower carnassial tooth morphometry in the endangered Iberian wolf (Canis lupus signatus): An ecomorphological analysis of sexual size dimorphism

The Anatomical Record, EarlyView.
Abstract The Iberian wolf (Canis lupus signatus) is an endangered subspecies characterized by highly fragmented populations and increasing human–carnivore conflict across the Iberian Peninsula. Although body mass strongly influences predator–prey dynamics and ecological performance, quantitative assessments of sexual size dimorphism (SSD) and body mass
Leonardo Cotts, Eduardo Rossener, Ricardo Moratelli, Maria da Luz Mathias, Oscar Rocha‐Barbosa   +4 more
wiley   +1 more source

Measurement of Geo-stress with Kaiser Effect of Acoustic Emission in Ruozhadu Power Station

Shuitu baochi yanjiu, 2005
According to the basic principle of Kaiser effect,the way to determine geo-stress in laboratory was investigated.It is presented that the geo-stress determined on the basis of Kaiser effect approaches to its numerical value determined in site.
MA Qing-li
doaj  

Study on the failure and acoustic emission characteristics of coal under graded cyclic loading and unloading stress paths

Scientific Reports
To study the influence of cyclic disturbance stress on the mechanical behavior of coal during mining, a gas containing coal fluid-solid coupling servo seepage experimental system was used to conduct experimental research on the acoustic emission (AE ...
Minke Duan, Meijuan Lu, Ruiqi Ban, Ke Yang, Xin Lyu, Changbao Jiang, Xuelong Hu, Jinzhou Tang   +7 more
doaj   +1 more source

Bioerosion traces in bones reveal an increase in ethological diversity in the insect exploitation of carcasses in the late Triassic

The Anatomical Record, EarlyView.
Abstract This study presents the first detailed description of bioerosion traces produced by insects in bones from the Santa Cruz Sequence (early Carnian, Santa Maria Supersequence, Brazil). An array of traces is reported, consisting of notches, a tube, trails of grooves attributed to the ichnotaxon Osteocallis mandibulus and ornamented depressions ...
Lucca S. Cunha, Francesco Battista, Heitor Francischini   +2 more
wiley   +1 more source

Acoustic Emission Precursors in Pile-Reinforced Loess Landslides: A New Early-Warning Signals Identification Approach

Sensors
Monitoring landslide displacement and anti-slide pile damage is critical for assessing the stability of progressive loess landslides. To address the challenge of capturing precursor information for loess landslide instability under anti-slide pile ...
Suya Zheng, Wei Yang, Tong Zhao, Xunchang Li, Zheng Lu   +4 more
doaj   +1 more source

Numerical study of AE and DRA methods in sandstone and granite in orthogonal loading directions

Water Science and Engineering, 2012
The directional dependency of the acoustic emission (AE) and deformation rate analysis (DRA) methods was analyzed, based on the contact bond model in the two-dimensional particle flow code (PFC2D) in two types of rocks, the coarse-grained sandstone and ...
Xu-hua Ren, Hai-jun Wang, Ji-xun Zhang
doaj   +1 more source

Multivariate Analysis of Hematological Stress Biomarkers and Welfare Domains in Organic and Intensive Pig Farming in Italy: A Pilot Study

Animal Research and One Health, EarlyView.
Intensive or organic farming systems may expose pigs to management or environmental challenges. Our preliminary results concluded that organic farming might enhance adaptive immune function, showing that improvements in welfare can translate into measurable immunological benefits, based on the correlation between welfare assessment and physiological ...
Dorotea Ippolito, Talal Hassan, Antonio Marco Maisano, Stefania Bergagna, Cecilia Guasco, Barbara Miniscalco, Martina Tarantola, Elena Colombino, Claudio Caruso, Ahsan Muhammad, Silvia Mioletti, Laura Tomassone, Massimiliano Tursi, Cristina Vercelli, Giovanni Loris Alborali, Maria Teresa Capucchio   +15 more
wiley   +1 more source

Exploration of corrosion defect detection of tank bottom plate based on electromagnetic acoustic emission

Journal of Low Frequency Noise, Vibration and Active Control
This study investigates the feasibility of detecting corrosion-induced defects in tank bottom plates using electromagnetic acoustic emission (EMAE) technology based on high-intensity pulsed current excitation.
Shibin Jiang, Zhuoyan Zhi, Jialin Mao, Lei Chen, Gang Liu   +4 more
doaj   +1 more source

Measuring physical activity in pregnancy using questionnaires: a meta-analysis

Acta Clinica Croatica, 2016
Physical activity (PA) during normal pregnancy has various positive effects on pregnant women’s health. Determination of the relationship between PA and health outcomes requires accurate measurement of PA in pregnant women.
Snježana Schuster, Iva Šklempe Kokić, Joško Sindik   +2 more
doaj   +1 more source