نتایج جستجو برای: silty sand with gravel

تعداد نتایج: 9206234  

2007
PETER R. WILCOCK BRIAN W. MCARDELL

Twenty-eight coupled observations of flow, transport, and bed surface grain size distribution were made in a laboratory flume using a wide range of flows and a sediment with a very poorly sorted, bimodal grain size distribution. These observations permit the transport rates of individual size fractions to be scaled by the proportion of each size immediately available for transport on the bed su...

2017

Many landfill siting reports, of which those of the Franklin County, OH, landfill are typical, imply continuity of minor sand bodies in till between widely-spaced test holes where sand deposits fall within similar depth ranges. This review of studies of the local origin of most sand and gravel "lenses" or "seams," and their transport in active glaciers, however, indicate that most such deposits...

2017

Many landfill siting reports, of which those of the Franklin County, OH, landfill are typical, imply continuity of minor sand bodies in till between widely-spaced test holes where sand deposits fall within similar depth ranges. This review of studies of the local origin of most sand and gravel "lenses" or "seams," and their transport in active glaciers, however, indicate that most such deposits...

2016
S. A. M. Elliott P. A. Ahti M. R. Heath W. R. Turrell D. M. Bailey

Stereo-video scuba transects were conducted during daylight hours from June to September 2013 within a proposed marine protected area (MPA) in the Firth of Clyde, west of Scotland. More juvenile Atlantic cod Gadus morhua of fork length (LF ) range 6-11 cm were observed in substrata containing mixed gravel, including maerl, than in boulder-cobble substrata with high algal cover, or sand with low...

2007
Su Sponaugle Peter Lawton

Studies on predat~on are often based solely on the measurement of predator consumption rates, providing little information on underlying behavioral mechan~sms. In this study, behav~oral observations were used In conjunchon with consumption rate analyses to investigate the predatory interactions between 2 brachyuran crabs, Ovalipes ocellatus and Calllnectes sapidus, and juvenile hard clams Aderc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی 1387

چکیده ندارد.

Journal: :Plant physiology 1950
G R Johnstone

The two well known techniques which are used in plant-nutrition studies are conveniently designated the solution-culture method and the sand-culture method. Some other slightly soluble materials, such as cinders, gravel, vermiculite, and Sponge Rok or various combinations of these may be substituted for sand. The use of slightly soluble material as a medium, to which the nutrient solution is pr...

ژورنال: علوم آب و خاک 2011
الهام نبی‌زاده, , حبیب الله بیگی هرچگانی, ,

Selecting an appropriate particle size distribution (PSD) model for a particular soil may be important for a precise estimation of soil hydraulic properties. Various models have been proposed for describing soil PSDs. The objective of this study was to compare the quality of fitting of eight PSD models (Fredlund, Gompertz, van Genuchten, Jaki, Logarithmic, Exponential, Logarithmic-Exponential a...

Journal: :journal of structural engineering and geo-techniques 2015
seyed vahid mojtahed sistania soheil ghareh mehdi siavoshnia

in this paper a laboratory study has been carried out on the effect of changing the type of soil filling cylindrical reinforcing elements from sm to gm on behavior of sandy soil. in this study the primary tests for evaluation of the impact of reinforced sand and gravel columns with diameters of 5 cm and heights of 15 cm subjected to vertical stresses of 50, 100, and 150 kpa were carried out in ...

Journal: :Proceedings of the Japan Society of Civil Engineers 1972

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