ACID RAIN-AN INVISIBLE THREAT

The Invisible Threat: Interference and Wireless LANs

St1b Waste Anesthetic Gases: the Invisible Threat

Waste anesthetic gases (WAGs) can be defined as all halogenated organic compounds (including methoxyflurane, halothane, isoflurane, sevoflurane, desflurane, and enflurane) and nitrous oxide that escape from the anesthetic circuit, or are exhaled by the patient. Management of WAGs intuitively seems prudent, but because excessive exposure is often difficult to detect without special monitoring de...

An Extension of the Acid Rain Theorem

Program fusion (or deforestation) is a well-known transformation whereby compositions of several pieces of code are fused into a single one, resulting in an e cient functional program without intermediate data structures. Recent work has made it clear that fusion transformation is especially successful if recursions are expressed in terms of hylomorphisms . The point of this success is that fus...

Acid Rain

Pure water has a pH of 7.0 (neutral); however, natural, unpolluted rainwater actually has a pH of about 5.6 (acidic).[Recall from Experiment 1 that pH is a measure of the hydrogen ion (H+) concentration.] The acidity of rainwater comes from the natural presence of three substances (CO2, NO, and SO2) found in the troposphere (the lowest layer of the atmosphere). As is seen in Table I, carbon dio...

Acid Rain in Wisconsin

While pure rain is naturally slightly acidic, the higher level of acidity in acid rain makes it a threat to plant and aquatic life and to some manmade materials and structures. The slight natural acidity of pure rain is the result of carbon dioxide in the air dissolving in water to produce a weak carbonic acid solution. This natural acid in rainfall and snowmelt is partly responsible for the lo...