نتایج جستجو برای: granular soil

تعداد نتایج: 204495  

2012
Greg J. Retallack

Three main features of paleosols are useful for distinguishing them from enclosing rocks: root traces, soil horizons, and soil structures. Fossil root traces are best preserved in formerly waterlogged paleosols. In oxidized paleosols their organic matter may not be preserved, but root traces can be recognized by their irregular, tubular shape, and by their downward tapering and branching. Often...

Journal: :global journal of environmental science and management 2015
a.o. ifelebuegu j. e. ukpebor c. c. obidiegwu b. c. kwofi

the adsorption properties and mechanics of selected endocrine disrupting compounds; 17 β-estradiol, 17 α – ethinylestradiol and bisphenol a on locally available black tea leaves waste and granular activated carbon were investigated. the results obtained indicated that the kinetics of adsorption were ph, adsorbent dose, contact time and temperature dependent with equilibrium being reached at 20 ...

2009
Tsau Lin

Granular computing(GrC) is a recent label, roughly speaking, jointly coined by Lin and Zadeh in 1996 to denote an emgering technolgy that is based on the computing/mathematical theory of an ancient concept of granulation. In this paper, we present the ”final” GrC model that simplify the earlier version.

Ayoob Rostamzadeh, Daryoush Fatehi, Hiva Mohammadi Bolbanabad, Mohammad Reza Kaffashian,

most popular sources for electromagnetic waves. However, there are many concerns regarding their biological effects on the body, especially the central nervous system. Therefore, the aim of this study was to evaluate the effects of cell phone radiation on histology of the cerebellar granular cells in the neonatal rat. Materials and methods: We selected some Wistar rats. Then, we randomly d...

2002
Juan Cisneros Dave Goulson Lara C. Derwent Dora I. Penagos Olivia Hernández Trevor Williams

Spinosad (Dow AgroSciences) is a mixture of tetracyclic-macrolide compounds produced by a soil actinomycete and has been classified as a bioinsecticide. Spinosad is highly active against Lepidoptera but is reported to be practically nontoxic to insect natural enemies. We assessed the impact of Spinosad in a granular maize-flour formulation on a selection of insect predators over periods of 2–14...

2012
L. Goren E. Aharonov D. Sparks R. Toussaint

The coupled mechanics of fluid-filled granular media controls the physics of many Earth systems such as saturated soils, fault gouge, and landslide shear zones. It is well established that when the pore fluid pressure rises, the shear resistance of fluid-filled granular systems decreases, and as a result catastrophic events such as soil liquefaction, earthquakes, and accelerating landslides may...

Journal: :International Journal of Geosynthetics and Ground Engineering 2016

Journal: :IOP Conference Series: Materials Science and Engineering 2021

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