The rise and fall of the groundwater level can drive air flow in vadose zone. In turn, interact with water flow. When unconfined aquifer is covered by a low-permeability media, coupling more obvious. this study, conceptual model established for zone response to rapid fluctuations table. Water injection drainage experiments are conducted double-layered sand column thick layer (80.5 cm) coarse th...

Vacuum preloading combined with prefabricated vertical drains (PVDs) system has been widely used to improve the soft clay high water content. Clogging is usually formed around PVDs during vacuum preloading, impeding propagation of pressure and slowing down consolidation process. To understand forming mechanism clogging, particle image velocimetry (PIV) technique tracking (PTV) were adopted in m...

To cite: Vallabhajosyula S, Sundaragiri PR. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2014209187 DESCRIPTION A 33-year-old Caucasian woman with Class 1 idiopathic pulmonary arterial hypertension (PAH) managed on tadalafil, ambrisentan, treprostinil, digoxin and diuretics presented with progressive dyspnoea and orthopnoea since 2 weeks. Cardiac examination re...

The phenomenon of a bubble bursting to generate droplets exists in industrial and environmental systems has subtle impact on our daily lives. A generated by gas injection or heating rises the free surface undergoes floating, drainage, eventually processes produce film jet droplets. interrelated make it difficult understand characteristics burst. Thus, summary individual stages single from gener...

In copper heap leaching structures, the ore is leached by an acidic solution. After dissolving the ore mineral, the heap is drained off in the acidic solution using a drainage system (consisting of a network of perforated polyethylene pipes and gravelly drainage layers) and is, then, transferred to the leaching plant for copper extraction where the copper is extracted and the remaining solution...