Results 81 to 90 of about 645,920 (232)
Case Studies in Construction Materials, 2020 Gan HaShlosha national park contain two ponds of running brackish water. Dams were built on the ponds in the 80 s. Some masonary from the dams, as well as other underwater structure, have deteriorated.
Amit Kenny
doaj +1 more source
Boreas, EarlyView.We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest +10 more
wiley +1 more source
Investigation of the Schmidt concrete test hammer
, 2020 INVESTIGATION OF THE SCHMIDT CONCRETE TEST HAMMER TA 7 -W34m 6-267 1958 MISCELLANEOUS PAPER NO. 6-267 June I958 o>VV Ji? o> CP 45 S. Army Engineer Waterways Experiment Station C O R P S O F E N G IN E E R S Vicksburg, Mississippi LIBRARY MAY 24 1968 ...
Waterways Experiment Station (U.S.)
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Applied SciencesWhen evaluating the shear strength of rock mass discontinuities, certain challenges arise due to the difficulty in quantifying the roughness characteristics of surfaces and the strength of asperities.
Margherita Zimbardo +2 more
doaj +1 more source
Boreas, EarlyView.Owing to its location in the semi‐arid region of northern Central Asia, Mongolia is highly sensitive to climate change and therefore provides an excellent setting for palaeoenvironmental research. Proxy data from different sediment types are crucial for interpreting past climate changes and landscape evolution, while burial ages provide chronological ...
Junjie Zhang +4 more
wiley +1 more source
Hammer Time: Using the Schmidt Hammer to Improve the Forecasting Accuracy of the Rockfall Activity Index (RAI) [PDF]
69A3551747110The Schmidt hammer is a widely used and inexpensive instrument for estimating rock strength either in the lab or in the field. Our research team tested the accuracy and repeatability of the Schmidt hammer to estimate rock strength on six ...
Pacific Northwest Transportation Consortium (PacTrans) (UTC) +4 more
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Progressive Convex Hull Simplification
Computer Graphics Forum, EarlyView.Abstract Convex hulls are useful as tight bounding proxies for a variety of tasks including collision detection, ray intersection, and distance computation. Unfortunately, the complexity of polyhedral convex hulls grows linearly with their input. We consider the problem of conservatively simplifying a convex hull to a specified number of half‐spaces ...
Alec Jacobson
wiley +1 more source
Use of the Schmidt hammer for testing weak rock
, 2007 A Schmidt hammer, also known as a Swiss hammer or a rebound hammer, is a device to measure the elastic properties or strength of concrete or rock, mainly surface hardness and penetration ...
Mohamad, Edy Tonnizam +1 more
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Cladistics, EarlyView.Abstract The evolutionary history of Amaranthaceae sensu stricto (s.s.) has been shaped by multiple whole‐genome duplications and rapid radiations, producing an ecologically diverse lineage whose internal relationships have long remained unresolved.
Tina Kiedaisch +3 more
wiley +1 more source
, 1986 Le présent rapport décrit le programme "Rebond du marteau de Schmidt" (Schmidt Hammer Rebound) qui permet de calculer la résistance à la compression uniaxiale de la roche à l'aide de nombres-indices du rebond du marteau de Schmidt. Ce programme est écrit en langage BASIC A Version 3,10 pour un ordinateur IBM-PC/AT.
M Issard, T R C Aston
openaire +1 more source