Noel C White

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At a porphyry copper-gold deposit in Bajo de la Alumbrera, Argentina, silicate-melt inclusions coexist with hypersaline liquid- and vapor-rich inclusions in the earliest magmatic-hydrothermal quartz veins. Copper concentrations of the hypersaline liquid and vapor inclusions reached maxima of 10.0 weight % (wt %) and 4.5 wt %, respectively. These unusually(More)
The standards for respiratory protective equipment (R.P.E.) from eleven countries and standards organizations were grouped according to type as particulate removing, gas and vapor removing, airline (fresh air hose and compressed air types), and self-contained breathing apparatus (open circuit and closed circuit). Each group of standards was further divided(More)
Home management of the majority of poison center callers is safe and cost-effective; but in the absence of poison center consultation, could callers correctly assess the severity of a poisoning? This study was conducted to determine indirectly whether callers can correctly assess the toxicity of a substance involved in a poison exposure by determining(More)
sions are tiny samples of hydrothermal fluid trapped in defects in precipitating crystals. There is evidence for trapping of both high-and low-density hydrothermal fluids, forming liquid-and vapor-rich fluid inclusions , respectively (5). Studies of these inclusions provide pressure-temperature conditions for the Bajo de la Alumbrera deposit during the(More)
The purpose of a Respiratory Protective Equipment (R.P.E.) standard is to assure that a minimum level of performance is reached by the respirator. Standards from a number of countries and standards organizations require that certain specifications are met in construction and that respirators be evaluated by specific performance tests. This is the second of(More)
Cells and tissues can be protected against a potentially lethal stress by first exposing them to a brief dose of the same or different stress. This "pre-conditioning" phenomenon has been documented in many models of protection against oxidative stress, including ischemia/reperfusion and ultraviolet (UV) light exposure. Stimuli which induce this protective(More)
This paper, the third in a series of papers devoted to review of international standards for Respiratory Protective Equipment (R.P.E.), summarizes in tabular form, compares, and critically reviews standards of different countries or organizations pertaining to practical performance tests (Man Tests). There are similarities, differences and omissions in the(More)
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