Soil moisture is a critical process in the water cycle and its assessment is of paramount importance to forecast changes in the water balance of a region. Ground Penetrating Radar (GPR) technology overcomes the limitations of point data by producing a tridimensional view of subsurface characteristics with a large economy of time, logistic, data processing and analysis. The purpose of this resea...

Soil vapor extraction (SVE) is one of the most commonly used technologies for soil remediation contaminated sites, and use models to accurately predict evaluate operational effectiveness SVE a necessary part site contamination treatment projects. A pneumatic model-based equipment model proposed comprehensively describe operation process. Though numerical simulation, influence fan frequency, air...

Roller drums make use of various shapes and their dynamic compaction effect is achieved by different kinds of dynamic excitation systems. The bearing capacity of layered soil constructions can be measured during the soil compaction process. The finite element method has been applied for dynamic analyses using elastic models. For the realistic simulation of the dynamic compaction process it is n...

The magnitude and extent of soil erosion in the Pacific Northwest region of the US still makes chilling reading. In a conventional farming approach in land mostly planted to winter wheat, there can be a loss of 12 bushels of topsoil, mostly from water erosion, for each bushel of wheat produced, with on-site losses of up to 1/8 in. of this highly fertile topsoil. Off-site outcomes were equally d...

topography and geology. The most viable and often cost-effective option to improve poor quality stands on the better sites is through clearcutting. Assessments of ground disturbances that result from silvicultural operations under site conditions similar to the Cumberland Plateau region have focused on physical site characteristics. Relevant studies for the mid-Cumberland do not exist. Studies ...

OBJECTIVE To investigate factors contributing to health care equipment problems and associated technological investments in public hospitals. DESIGN The article reviews the processes of equipment planning, procurement and management. Analysis of results and observations from experts leads to recommendations and suggestions on good equipment management practices in public hospitals. It also pr...