Results 91 to 100 of about 6,682 (253)

Toward an idiographic understanding of the role of sleep‐mood dynamics in adolescents' internalizing symptoms

open access: yesJCPP Advances, EarlyView.
Abstract Background Adolescence is marked by increased vulnerability to sleep disturbances and mood disorders. Understanding how day‐to‐day changes in sleep and mood are linked within the same individual is crucial for clarifying sleep's role in emerging internalizing disorders. However, the extent to which an adolescent's fluctuations in sleep predict
Konstantin Drexl   +4 more
wiley   +1 more source

The engineering behaviour of the tropical clay soils of Dhaka, Bangladesh [PDF]

open access: yes, 2001
This research has evaluated the engineering behaviour of the tropical clay soils of Dhaka, Bangladesh. Attempts have been made to show the relationship of mineralogy and fabric with engineering properties.
Hossain, A T M. Shakhawat
core  

Experimental study of strain accumulation of silica sand in a cyclic triaxial test [PDF]

open access: yes, 2014
The experimental and phenomenological investigation of the elasto-plastic long-term behaviour of soils under dynamic loading is important for the development of risk analysis tools and numerical accumulation models for settlement prediction.
Degrande, Geert   +2 more
core   +2 more sources

Static and Dynamic Properties and Temperature Sensitivity of Emulsified Asphalt Concrete

open access: yesAdvances in Materials Science and Engineering, 2018
Asphalt concrete is a typical rheological material, which is hard brittle at low temperature and reflects soft plastic facture at high temperature; the temperature has a great influence on the mechanical properties of asphalt concrete.
Bin Huang   +3 more
doaj   +1 more source

Dynamic behaviors of MICP and fiber-treated calcareous sand under dynamic triaxial testing

open access: yesRock and Soil Mechanics, 2022
To improve the liquefaction resistance of calcareous sand foundations, microbially induced calcium carbonate precipitation (MICP) technology and fiber reinforcement technology was combined to treat the calcareous sand sampled from the South China Sea. Based on dynamic triaxial tests, the dynamic behaviors of MICP-treated and fiber-reinforced calcareous
WANG Rui   +6 more
openaire   +1 more source

Fault Detection of Electric Motors via Symmetrized Dot Pattern‐Based Features

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study proposes a novel symmetrized dot pattern (SDP) approach using designed SDP‐based features, extracted from transformed vibration signals, for fault detection. These features describe the compactness, inclination, and shape of the “snowflake” diagram distributions.
Mario Spirto   +6 more
wiley   +1 more source

Polymaterial Lattice Discrete Particle Model for the Optimization of Lightweight Aggregate Concrete: Intragranular Fracture and Compression Behavior

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Lightweight aggregate concrete (LWAC) offers clear advantages for sustainable construction, including reduced density and improved thermal insulation. However, its mechanical and fracture behavior is difficult to characterize due to the heterogeneity and brittle crushing of porous lightweight aggregates.
Yuhui Lyu   +7 more
wiley   +1 more source

Dynamic Properties of Plain Concrete in Triaxial Stress State [PDF]

open access: yes, 2009
In this study, the dynamic behavior of plain concrete at high strain rates was experimentally investigated with over 60 cubic specimens using a custom-designed, triaxial, servo-hydraulic controlled testing machine.
Yan, Dongming, Lin, Gao, Chen, Genda
core  

Visco-elastoplastic constitutive model for remolded loess based on infinitesimalization of plastic elements

open access: yesYantu gongcheng xuebao
Based on the theory of infinitesimalization of plastic elements and infinite series, the visco-elastoplastic constitutive model for remolded loess is established through the triaxial creep tests under loading and unloading conditions and verified by the ...
LUO Yasheng , ZHAO Chengbin , SUN Zhe , FAN Quan , NIU Yuxin , LI Bin
doaj   +1 more source

Experimental study on cumulative deformation characteristics of coral sand under long-term cyclic loading

open access: yesYantu gongcheng xuebao, 2019
The drained triaxial shear tests on isotropic and K0 consolidation of coral sand samples taken from the South China Sea reveal that the consolidation path has a significant effect on the strength characteristics of the coral sand.
HE Shao-heng 1, LIU Zhi-jun 2, XIA Tang-dai 1, ZHOU Hong-xing 2, YU Bing-qi 1
doaj   +1 more source

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