Polycyclic aromatic hydrocarbons (PAHs) were quantified in sediment, soil, and plant material from Hanoi, Vietnam, and an aquatic production system in peri-urban Hanoi. The sum of the concentration of 16 US-EPA priority PAHs ( summation PAH16) ranged between 0.44 and 6.21 mg kg(-1) dw in sediment and between 0.26 and 1.35 mg kg(-1) dw in soil, with decreasing concentrations from the urban area ...

The cause of fevers induced in rabbits by intravenous injection of cryptococcal cells and soluble extracts was investigated in a previous paper in this series.' Two distinct types of pyrogenic responses were found to be produced by this organism. Intact cells, whether live or killed, caused fevers in normal rabbits, whereas the soluble material induced responses primarily in animals that had be...

Concentration, source, and ecological risk of polycyclic aromatic hydrocarbons (PAHs) were investigated in 22 stations from surface sediments in the areas of anthropogenic pollution in the Klang Strait (Malaysia). The total PAH level in the Klang Strait sediment was 994.02±918.1 µg/kg dw. The highest concentration was observed in stations near the coastline and mouth of the Klang River. These l...

There are few reports in the literature (1--4) on the pyrogenicity of streptococci or streptococcal filtrates. The most recent detailed investigations on streptococcal pyrogenic activity were reported by Stetson (5) and Watson (6). Stetson reported on the endotoxic activity of Group A streptococci grown in vitro. On the basis of studies with lysates of streptococci disrupted in a Mickle disinte...

The pyrogenic activity of scarlet fever toxin has been described a number of times. The "classic" toxin, prepared from the Dochez NY 5 strain, was found to have a double specificity, designed by Hooker and Follensby as "A" and "B".1 More recently, Watson has analyzed the antigenic components of this toxin and found a third type, which he has denoted "C"1.2 In working with a mutant strain of str...

Cyclooxygenase inhibitors such as ibuprofen have been used for decades to control fever through reducing the levels of the pyrogenic lipid transmitter prostaglandin E2 (PGE2). Historically, phospholipases have been considered to be the primary generator of the arachidonic acid (AA) precursor pool for generating PGE2 and other eicosanoids. However, recent studies have demonstrated that monoacygl...

Research into dynamic bushfire behaviour conducted over the last few years has shown that bushfires burning on lee-facing slopes can exhibit atypical forms of propagation under extreme weather conditions. For instance, recent numerical simulations have indicated that pyrogenic vorticity (the curl of the velocity field) is a key driver of rapid lateral fire spread as a consequence, this type of ...