Gamma-butyrolactone (GBL) has become the new drug of choice for young adults to abuse. The effects it induces include euphoria, disinhibition, depressed levels of consciousness, and eventual respiratory depression. GBL is metabolized into gamma-hydroxybutyrate (GHB), which is also a recreational drug and is now a schedule I drug in some states. Both GBL and GHB are used in social settings simil...

During the last decade, mining companies and mobile equipment manufacturers have pursued improved efficiency, productivity, and safety in underground mining operations by automating some of the functions of underground vehicles. This paper describes the implementation and successful field testing of a new infrastructureless guidance system for autonomous tramming of centre-articulated undergrou...

The value of micro = 29,400 has been found for the human heart beat over the temperature range of approximately 4.7 degrees C. This value is different from that of 24,000 calories which has been obtained for the effect of temperature on judgments of short durations. The evidence indicates that the estimation of short time intervals is controlled by a chemical master reaction which is independen...

This paper presents an extension to SQL where end-users can specify their information quality constraints in the queries. Specifically, it shows how an SQL quality estimator module evaluates the quality profiles (i.e. accuracy and completeness) of queries based on the defined quality constraints. The quality estimations are numeric which would support the end-users in determining the value and ...

Since the antiquity, and on an empirical basis, man has accumulated experience on the benefits and risks of minerals (such as, special clay, mud and sand) and other mineral resources (such as, salt, sea water, spring water, underground water, volcanic emissions and dust) on human health. Man and minerals are chemical systems sharing a common composition, comprising major, minor and trace chemic...

Australia is one of the world’s leading mineral resource extraction and exporting nations. Underground mining can cause ground surface displacement, which may in turn have serious impacts on the environment or man-built facilities. This paper describes the results of a study into the feasibility of surface subsidence (caused by underground coal mining) monitoring using differential interferomet...

Underground mines are a special type of environment which requires significant attention since they directly relate to miners‟ productivity, health and safety. With coal or ore exploitation into deep underground mine environments, high temperature and humidity creates risks because of large amounts of heat generated from geothermal heat, mining machines, groundwater and mine water. There have b...