Excision of canine skin biopsies with heat-generating devices may not allow reliable histologic interpretation, particularly when assessing margins of small biopsy specimens. RWRS may be less traumatic to canine skin than monopolar electrosurgery and CO2 laser when used to make incisions.
Age-adjusted, sex- and race-specific 1969-1971 cancer incidence ratios for the 722 census tracts of the San Francisco-Oakland Standard Metropolitan Statistical Area were compared with measured chysotile asbestos counts in tract drinking waters. The water supplies serving the area have varying contact with naturally occurring serpentine. The t test for multiple regression coefficients and the t test for correlation coefficients showed significant (p less than 0.01) relationships between chrysotile asbestos content of tract drinking water and white male lung, white female gall bladder and pancreas, and peritoneal cancers in both sexes. Of weaker significance (0.01 less than or equal to 0.05) were female esophagus, pleura and kidney, as well as stomach cancers in both sexes. These associations appeared to be independent of income, education, asbestos occupation, marital status, country of origin and mobility.
Many of the Australian and New Zealand species of Pittosporum have long been treasured in gardens of Australia, New Zealand, France, and England, for their flowers, foliage and sweet scent, and several are common hedge plants and ornamentals in California and Florida. In addition to an aesthetic appeal, the species have scientific interest and potential economic value.The most recent inclusive treatment of Pittosporum is in the treatment of the family Pittosporaceae by Pritzel,^ who found it was impossible to make a satisfactory arrangement or classification of the genus and relied upon the geographic distribution of the species. He wrote as follows:Etwa 160 Arcen in den Tropen und Subtropen der ostlichen Hemisphare von West-Afrika bis 2u den Inseln des Pazifik, Da eine befriedigende naturliche Gliederung der Gattung noch nicht gegeben werden kann, so bleibt nichts anderes ubrig, als sie nach ihrer Verbreitung zu behandeln. Ein kiinfciges System der Gattung wird sich vor allem auf die Frucht zu grunden haben, und diese ist bei vielen Arten noch nicht geniigend bekannt. He discussed and keyed the species separately of the following regions:
The City of Stockton, CA operates a wastewater treatment facility that discharges tertiary treated effluent during the summer and secondary treated effluent during the winter to the San Joaquin River. Investigations were carried out between 1996 and 2002 to provide insight regarding the potential public health benefit that may be provided by year-round tertiary treatment. A hydraulic model of the San Joaquin River and a dynamic disease transmission model integrated a wide array of disparate data to estimate the level of viral gastroenteritis in the population under the two treatment scenarios. The results of the investigation suggest that risk of viral gastroenteritis attributable to the treatment facility under the existing treatment scheme is several orders of magnitude below the 8-14 illnesses per 1000 recreation events considered tolerable by U.S. EPA, and winter tertiary treatment would further reduce the existing risk by approximately 15-50%. The methodologies employed herein are applicable to other watersheds where additional water treatment is being considered to address public health concerns from recreation in receiving waters.
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