Results 171 to 180 of about 4,456 (234)

Grape ripening heterogeneity in white and red cultivars (Vitis vinifera L.) grown on different calcareous soils using technological and phenolic markers. [PDF]

J Sci Food Agric
Vitaggio C, Pollon M, Schnitter M, Caraci V, Cinquanta L, Corona O.   +5 more
europepmc   +1 more source

The bind of the burrow: space use is dominated by selection for burrow habitat over foraging habitat in an arid-adapted carnivore

Thorley J, Duncan C, Herdtle A, Manser M, Cram D, Clutton-Brock T.   +5 more
europepmc   +1 more source

A national baseline for methane sink habitats and methanotroph diversity

Knudsen K, Sereika M, Jensen T, Delogu F, Schmider T, Jiang C, Kirkegaard R, Tveit A, Nielsen P, Albertsen M, Singleton C.   +10 more
europepmc   +1 more source

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Liquefaction Modeling for Biocemented Calcareous Sand

Journal of Geotechnical and Geoenvironmental Engineering, 2021
AbstractA thermodynamics-based constitutive model is developed for calcareous sand treated by microbially induced calcite precipitation (MICP) to describe the effects of biocementation and its degr...
Yang Xiao, Zhichao Zhang, Armin W. Stuedlein, T. Matthew Evans   +3 more
openaire   +1 more source

Biocementation of calcareous sand using soluble calcium derived from calcareous sand

Bulletin of Engineering Geology and the Environment, 2017
A soil improvement method based on a microbially induced carbonate precipitation (MICP) process has been developed in recent years. In this method, calcium carbonate is precipitated in-situ to act as a cementing agency. Calcium chloride is normally used as the calcium source for the MICP process. The use of calcium chloride causes two problems.
Lu Liu, Hanlong Liu, Yang Xiao, Jian Chu, Peng Xiao, Yang Wang   +5 more
openaire   +1 more source

Granulometry of Two Marine Calcareous Sands

Journal of Geotechnical and Geoenvironmental Engineering, 2021
AbstractThe morphology of two types of complex calcareous sand was investigated in this study. The materials were selected owing to their different geologic and biologic origins.
Linzhu Li, Ryan D. Beemer, Magued Iskander   +2 more
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Settling Characteristics of Calcareous Sand

Journal of Hydraulic Engineering, 2003
This paper provides quantitative comparisons and relationships for the fall velocities and drag coefficients of 998 calcareous sand grains collected on Oahu, Hawaii. Laboratory analyses of the grains provide the three orthogonal dimensions, fall velocity, and density, from which the nominal diameter, drag coefficient, Reynolds number, and shape factor ...
David A. Smith, Kwok Fai Cheung
openaire   +1 more source

Initiation of Motion of Calcareous Sand

Journal of Hydraulic Engineering, 2004
This paper examines the initiation of motion of four natural and five sieved calcareous sand samples in unidirectional flow. Flume experiments yield the sediment transport rate as a function of bed shear stress up to bed-form development. Reference-based criteria are supplemented by visual observations to determine the critical shear stress.
David A. Smith, Kwok Fai Cheung
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Crushing of calcareous sands during drained shear

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1980
Abstract Sands are known to crush under stresses at high confinement. Particle crushing is more predominant under shear stresses than under isotropic compression. Stresses in soil under deep foundations often reach the range where crushing becomes significant.
M. Datta, S. K. Gulhati, G. V. Rao
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Bahaman Calcareous Sands

AAPG Bulletin, 1954
ABSTRACT The major part of the Bahama Banks is covered with a mantle of sands composed of calcium carbonate. They rest on a basement of similar sediment which has been consolidated into limestone by the subaerial deposition of calcite cement.
openaire   +1 more source