We analyzed a varved sequence of sediment from a 350-m depth in the north basin of Lake Malawi, East Africa, for the size distribution of the sortable silt fraction (10–64 mm). Mean size of the sortable silt (SS) varies measurably in sediments spanning the past 650 yr and covaries with the mass accumulation rate of terrigenous silt and clay (TMAR) over much of the interval. Most of the silt and...

With the rapid development of construction and road engineering, accumulation silting waste soil is becoming more serious. In order to recycle silt, a new type stabilizer was developed in this study improve its mechanical properties applicability on roads. The optimal ratio components determined by orthogonal test grey correlation analysis. effects macroscopic silt were investigated unconfined ...

An experiment was conducted to study the effects of different soil media on seed germination and seedling growth of peach during 2001 and 2002 in Orakzai Agency. Different soil media alone and in combination used for seed germination of peach were Farm Yard Manure, Saw dust, Canal silt, FYM + Sawdust, FYM + Canal silt, Sawdust + Silt and FYM + Sawdust +Silt. Different media showed non significa...

In this study, effects of various media on growth and physical characteristics of Calendula were evaluated. 20 days old seedlings were transplanted on different crop residues as media, including, Siltas control FYM+Silt (1:3), FYM+Silt (1:3) Maize crop residues and FYM+Silt (1:3) cockscomb as treatment, Completely Randomized Designs (RCBD) was applied to test the significance of treatments and ...

Saprolite, weathered bedrock, is being used to dispose of domestic sewage through septic system drainfields, but the thickness saprolite needed remove biological contaminants unknown for most saprolites. This study developed and tested a simple method estimating below drainlines filter E. coli from wastewater using estimates volume pores that are smaller than length coliform (≤10 μm). Particle ...

Present research was conducted with the aim of determination of significant effect of soil properties on natural regeneration of Haloxylon aphyllum and correlation coefficient and linear relation between soil variables and natural regeneration of Haloxylon aphyllum. Firstly, geomorphologic units were prepared in the areas under cultivation of Haloxylon aphyllum in Ardestan. Two cultivated lands...

laboratory data, which relate the liquefaction resistance of firoozkooh sand and non-plastic silt mixtures to shear wave velocity are presented and compared to liquefaction criteria derived from seismic field measurements by andrus and stokoe [1]. in the work described herein, cyclic triaxial and resonant column tests were conducted on specimens of clean sand and sand-silt mixtures with silt co...