Results 11 to 20 of about 176,942 (168)

Model Test and Numerical Simulation Study on the Effect of Mudcake and Length-Diameter Ratio on the Bearing Capacity of Bored Cast-in-Place Piles

open access: yesAdvances in Civil Engineering, 2022
To study the effect of length-diameter ratio and mudcake on the bearing capacity of bored cast-in-place piles, the indoor model test and finite element numerical simulation method were used to carry out the loading test of piles under different mudcake ...
Peisheng Xi, Mengxuan Kan, Yang Liu
doaj   +1 more source

Accessing Resources in Arrival Neighbourhoods: How Foci-Aided Encounters Offer Resources to Newcomers

open access: yesUrban Planning, 2020
Numerous studies have stressed the importance of social networks for the transfer of resources. This article focuses on recently arrived immigrants with few locally embedded network contacts, analysing how they draw on arrival-specific resources in their
Nils Hans, Heike Hanhörster
doaj   +1 more source

Heat Transfer Enhancement of Energy Pile with Nanofluids as Heat Carrier

open access: yesAdvances in Civil Engineering, 2023
As one of the core components of the transport medium in the energy pile system, the circulating working fluid is crucial for the enhancement of its heat transfer efficiency.
Ruizhi Wang   +5 more
doaj   +1 more source

Urban Space and Social Cognition: The Effect of Urban Space on Intergroup Perceptions

open access: yesThe ANNALS of the American Academy of Political and Social Science, 2021
Cities and neighborhoods are key sites of migration-related diversity. Differences in lifestyle, class, ethnicity, or religion become visible in urban spaces, such as neighborhood bars, shops, or cafes. This article applies a social cognitive approach to explore how urban spaces shape the relationship between ethnic encounters and intergroup ...
Knipprath, Kim   +3 more
openaire   +2 more sources

On the Dynamic Mechanical Behaviors of a Fault Unwelded Bimrock Exposed to Freeze-Thaw-Fatigue Loads: A Lab-Scale Testing

open access: yesGeofluids, 2022
This work is aimed at investigating the mechanical behaviors of a fault unwelded bimrock subjected to coupled freeze-thaw (FT) and fatigue loads. The influence of FT cycle on rock strength, deformation, damage evolution, and failure morphology was ...
Yu Wang   +3 more
doaj   +1 more source

Biotechnological development of plants for space agriculture

open access: yesNature Communications, 2021
The logistical and practical challenges of supplying food for long-term space missions are substantial. In this comment, the authors discuss potential biotechnological approaches that could be used to aid the production of food crops in space.
Yongming Liu   +3 more
doaj   +1 more source

A Novel Fatigue Damage Model of Rock considering Temperature Effects

open access: yesAdvances in Civil Engineering, 2020
The deformation rules and failure types of rock fatigue damage at different temperatures are quite different, and existing constitutive theory cannot describe them quantitatively.
Yaoliang Zhu   +5 more
doaj   +1 more source

Creep Damage Evolution of Marble From Acoustic Emission and the Damage Threshold

open access: yesFrontiers in Earth Science, 2020
For the underground engineering, time-dependent behavior (i.e., creep) of rocks is one of the main reasons for instability of surrounding rock in great stress conditions.
Xueying Liu   +5 more
doaj   +1 more source

Determination method of fatigue strength and precursors of fatigue failure of porous weakly cemented siltstone

open access: yesMeitan xuebao, 2023
In order to study the fatigue behavior of porous weakly cemented siltstone, a quantitative calculation method of characteristic stress was established based on uniaxial step loading and unloading tests of siltstone.
Mingchun LIANG   +4 more
doaj   +1 more source

The Role of the Body in Pandemic Geographies of Encounter: Anti-Restriction Protesters Between Collective Action and Political Violence

open access: yesUrban Planning, 2023
This article looks at public anti-restriction protests by framing public space as a vital component of urban life. It argues that the body is rarely introduced as a scale of spatial analysis and usually plays a more prominent role in the subfields of ...
Sabine Knierbein, Richard Pfeifer
doaj   +1 more source

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