Brian Zier

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We determined blood concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in 41 female employees with previous exposure to pentachlorophenol-based wood preservatives from 10 day-care centers in the Hamburg, Germany, area. We compared the blood concentrations with estimated age-dependent reference values and(More)
  • B Zier, Hong-Wei Lin, Bao Qing, Hu-Jun, Lin Hw, Wang Q +4 others
  • 2006
Regularity is an important algebraic property of parametric curve and surface, which depends on the parameterization of parametric curve and surface. In computer-aided manufacturing, the processed parametric curve and surface should be regular, so the parametric curve and surface generated by computer-aided design should be regular first. However, the(More)
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