Results 71 to 80 of about 6,610 (296)

Optimizing Strategies for Non‐Invasive Prospection of Settlements in the Intertidal Zone: A Case Study From the Centre of the Drowned Medieval Village of Tolsende (Scheldt Estuary, the Netherlands)

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet   +9 more
wiley   +1 more source

Frost heaving pressure and characteristics of frost cracking in elliptical cavity (crack) of rock mass under coupled thermal-mechanical condition at low temperature

open access: yesYantu gongcheng xuebao, 2018
The frost heaving pressure is induced by water-ice phase transition in water-bearing cracks in addition to thermal stress at low temperature in rock engineering in cold regions.
HUANG Shi-bing 1,2, LIU Quan-sheng 3, LIU Yan-zhang 1, CHENG Ai-ping 1
doaj   +1 more source

Heave and Heaving Pressure in Freezing Soils: A Unifying Theory

open access: yesVadose Zone Journal, 2013
A unifying theory is presented for the process of heave in freezing soils. Out of the Cold Regions Research and Engineering Laboratory (CRREL) school of D.M. Anderson came the concept of the segregation potential . Out of the Cornell school of R.D. Miller came the model for the
Groenevelt, P., Grant, C.
openaire   +2 more sources

Black shale heaving at Sainte-Foy, Quebec, Canada

open access: yes, 1986
Oxidation of pyrite and crystallization of sulphate minerals in rock fractures have locally produced ground heaving in excess of 10 cm in the foundations of a college at Sainte-Foy, near Québec (Quebec).
Marc-André Bérubé   +4 more
core   +1 more source

The quality of interaction with children in collective play: Children's agency

open access: yesBritish Educational Research Journal, EarlyView.
Abstract There is a growing body of studies on increasing the quality of infant–toddler education and care. Yet little attention has been directed towards how to bring toddlers' agency and perspective to their personally meaningful learning in collective play.
Liang Li
wiley   +1 more source

Frost heaving of foundation pit for seasonal permafrost areas

open access: yesИнженерно-строительный журнал, 2019
Frost heaving can cause support structures to crack and even instability of the foundation pit. This paper describes the frost heaving features of the steel pile pre-stressed tendon composite foundation pit support system (SPPTCFPSS). As a combined rigid–
Guo Chao, Zhengran Lu
doaj   +1 more source

Development of a constitutive model for a heaving clay from Rosebank

open access: yes, 1993
Bibliography: leaves 135-142.Heaving clays are partially saturated soils composed of a high fraction of the montmorillonite clay mineral. When exposed to free water they undergo volumetric expansion, which often results in differential movements at the ...
Wiseman, K H
core  

Research in the Relation between Frost-heaving of Forest Road and Conditions of Road Surface [PDF]

open access: yes, 1992
In order to research in the relation between frost-heaving of forest road and conditions of road surface, we set two experimental places, shade and sunny. And allocated six test sections in each place.
井上, 裕, 林, 博道
core  

Classifying avian drinking behaviour: ecological insights and implications in a changing world

open access: yesBiological Reviews, EarlyView.
ABSTRACT Water is a fundamental currency of life, and its availability significantly influences animal behaviour, physiology and distributions. However, our knowledge around the dependence on water for drinking and the direct and indirect mechanisms driving related behaviours remains partial in the context of changing climates. Here, we review patterns
Shannon R. Conradie, Marc T. Freeman
wiley   +1 more source

Model Test of Salt−frost Heaving Limit Depth of Coarse-grained Sulphate Saline Soil

open access: yes工程科学与技术, 2019
In order to perfect the salt expansion theory of coarse-grained saline soil and explore the influencing factors and mechanism of the salt−frost heaving force, 96 groups of coarse-grained sulphate saline soil samples are prepared artificially then indoor ...
Peng YANG   +3 more
doaj  

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