Solid waste landfills have become rather commonplace in urbanized and industrialized regions of the world. If designed, managed, and restored properly, they can be converted to useful land uses. However, restoration of woody vegetation can be difficult when animal damage occurs. Numerous species of voles occur throughout the northern hemisphere and several may become serious pests of restoratio...

the northern sector of the Kent interlobate Complex, created by two major ice lobes of the Laurentide ice sheet during late Wisconsinan times, dominates the glacial landscape of northeast Ohio. the geomorphology of this impressive complex reveals the presence of large hummocks, kettle lakes and substantial esker chains. the esker chains, usually smaller than 1.3 km long, run parallel to the int...

Enhancement projects within anadromous salmonid rivers of California have increased in recent years. Much of this work is intended as mitigation in regulated streams where salmon and steelhead spawning habitat is inaccessible or degraded due to dams, water diversions and channelization. Little research has been done to assess the benefits of spawning habitat enhancement to stream organisms othe...

This paper deals with the issue of financing technology investments. Specifically, it concerns the process of loading and transportation of sand and gravel. The research was conducted through a questionnaire survey. The main objective of this paper is to identify financing sources used for the process of loading and transportation of sand and gravel in selected companies. Another objective was ...

Abstract The presence of gravel in soils modifies the porosity, pore connectivity and size distribution soil matrix as well matrix-gravel interfaces. aim present study is to investigate effect relative volume samples with mass fractions 5,10, 20 wt% varying bulk densities (1.3, 1.45, 1.55, 1.60, 1.65 g cm –3 ) on (i) total field capacity, plant available water holding (ii) (iii) thermal capacit...

Because of complex mechanical properties and deformation mechanism, gravel soil mixture is an important medium concern in the field geotechnical engineering. Based on continuous-discontinuous coupling algorithm formed by structure shell elements particle discrete element method (PFC3D), soft servo loading sample realized, typical triaxial compression test data are used to calibrate mesoscale pa...

This study evaluates the performance of horizontal subsurface flow constructed wetland (HSSF-CW) for the removal of chlorinated resin and fatty acids (RFAs) from pulp and paper mill wastewater. The dimensions of the treatment system were 3.5 m x 1.5 m x 0.28 m with surface area of 5.25 m, filled with fine sand and gravel. The cell was planted with an ornamental plant species Canna indica. The r...

Particle shape was one of the most important factors which affects the gravel aggregate’s properties. It was also one of the important factors that directly affects the performance of asphalt pavements. In this paper, the gravel aggregate of quartzite was studied by using the industrial CT instrument. MATLAB was used to capture the aggregate slice properties including reverse color, median filt...