The introduction of installed geomembranes revolutionized containment system effectiveness for the protection of groundwater quality and water resources.After over six decades of installing geomembranes and evaluating their performance, it has become clear that simply specifying the use of a geomembrane is not enough.Even the addition of Constructi

Miscommunication in the cockpit or between pilots Dryer Drum Support Bush and air traffic controllers (ATCs) could be fatal when they use English, the de facto language for international civil aviation.To ensure air safety, the International Civil Aviation Organization (ICAO) has set up English proficiency requirements in Document 9835, calling for

As a type of unconventional oil and gas Books resources, tight sandstone reservoir has low permeability and porosity properties and thus is commonly necessary to develop through hydraulic fracturing treatment.Due to the coexistence of natural fractures and induced hydraulic fractures, the heterogeneity of reservoir permeability becomes severe and t

The paper presents a numerical assessment of various room heating methods using assembled room models.It compares the efficiency of floor heating, ceiling heating, and plane radiator heating in a hair serum selected room of a family house under winter conditions in the Central European climate zone.COMSOL Multiphysics software is used for computer

How duplicate genes provide genetic robustness remains an unresolved question.We have examined the duplicated histone deacetylases Sir2p and Hst1p in Saccharomyces cerevisiae and find that these paralogs with non-overlapping functions can provide genetic robustness against null mutations through a substitution mechanism.Hst1p is an NAD(+)-dependent