Introduction Canada experienced 92 waterborne diseases outbreaks between 1975 and 20011. In addition, at any one time about 1500 communities in Canada are unable to use their drinking water. The source of exposure in disease outbreaks is often not known, so the true disease burden attributable to water related exposure may be much higher. Researchers have investigated risk factors for waterborn...

In 1983, Wigner outlined a modified Schrödinger—von-Neumann equation of motion for macroobjects, to describe their typical coupling to the environment. This equation has become a principal model of environmental decoherence which is beleived responsible for the emergence of classicality in macroscopic quantum systems. Typically, this happens gradually and asymptotically after a certain characte...

Every living organism needs to have multiple defense mechanisms against environmental challenge for survival during evolution. Rapid changes in gene expression have been demonstrated during bacterial adaptation to environmental stress. Since DNA supercoiling varies in response to environment, and since supercoiling is known to influence strand separation in DNA, and therefore many vital cellula...

A canine model was used to study the effects of different environmental stresses on the heart and coronary circulation. The heart was surgically instrumented to measure coronary blood flow, left ventricular pressure, and other cardiovascular variables. Coronary flow was recorded by telemetry. Physiologic data were processed and analyzed by analog and digital computers. By these methods the phys...

Male reproductive health has deteriorated considerably in the last few decades. Nutritional, socioeconomic, lifestyle and environmental factors (among others) have been attributed to compromising male reproductive health. In recent years, a large volume of evidence has accumulated that suggests that the trend of decreasing male fertility (in terms of sperm count, quality and other changes in ma...

OBJECTIVES Few studies have addressed the effect of cadmium toxicity on arterial properties. METHODS We investigated the possible association of 24 h urinary cadmium excretion (an index of lifetime exposure) with measures of arterial function in a randomly selected population sample (n = 557) from two rural areas with low and high environmental exposure to cadmium. RESULTS 24 h urinary cadm...

Chronic ingestion of modest doses of dietary iodine, radiation, and polyhalogenated biphenyls (PCB's and PBB's) are environmental factors with known or suspected adverse effects on the human thyroid. Iodine consumption in the United States is approaching 1 mg daily for a large segment of the population. Data are reviewed which support the need for concern regarding the long-term adverse effects...

The retention behaviour of 66 organic pollutants in biocompatible micelles was studied by QSPR method. The linear and nonlinear models between the structures of these compounds and their chromatographic retention values were established by using the heuristic method and the RBFNN method, respectively. The correlation coefficients of the two methods are 0.8400 and 0.8642, respectively, and the c...