Laboratory-scale column experiments were conducted to assess the impact of different LNAPL volumes on LANPL migration behavior in capillary zone porous media. Three diesel (50 mL, 100 and 150 mL) released using a 1D rectangular filled with natural sand. The water table was set at 29 cm from bottom column. image analysis results provided quantitative time-dependent data distribution through dura...

Abstract Barchan dunes of the Kharga Depression, Western Desert, Egypt, have been assessed in terms their morphometry, grain size, and migration rate using remote sensing GIS techniques field laboratory work. Thirty-seven sites were chosen along dune belt subdivided into northern, central, southern sectors. At each site, several barchans subjected to morphometric measurements (length, width, he...

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...

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...

The sand spits associated with the Volta and Senegal River deltas, the two largest river deltas in West Africa, after that of the Niger River, show complex patterns of morphodynamic development while also strongly reflecting the recent impacts of human activities. The large spit of the Volta delta seems to be a direct outgrowth of a natural change in the location of the mouth of the Volta and o...

Time-Lapse Ground Penetrating Radar (GPR) was employed to study used engine oil (UEO) contamination of sandy environment in laboratory setting. GPR is a near-surface geophysical methods that uses electromagnetic fields provide image the dielectric properties earth materials detect structures and changes within subsurface. This research aimed detect, monitor map migration UEO contaminant sand. T...

This experiment compared the effects of sand and straw bedding in free stalls on resting time, cleanliness, hock injuries, and hoof health of dairy cows and tested whether cow preferences for a bedding material depended on the familiarity with the material. A total of 52 dairy cows were kept either on straw bedded concrete stalls or sand stalls for at least 21 wk. The lying behavior was observe...

Under the action of unidirectional water migration, museum soil sites generally encounter erosion through dry cracking, salt enrichment, etc. In this paper, earthen site Terra Cotta Warriors Museum First Emperor Qin was used as research object, and “hydrophobic” property coated sand proposed to prevent migration accumulation. Through column experiment HYDRUS software numerical simulation, law i...

This paper explores the effect of particle breakage on mechanical behavior coarse sand through 3D Discrete Element Method (DEM) simulations direct shear tests (DST). The objective is to gain insights into macro- and micro-mechanical behaviors crushable sand, with a particular focus stress–strain relationship, volumetric deformation, evolution grain crushing. involve comparison between non-crush...