single exposure
2.Under the action of noise exposure (105 ± 2 dBA, duration of 30 min), γ-irradiation (single irradiation of 80 Gy) and combined exposure of them (γ-irradiation followed by noise), the hearing loss and pathological change of hair cells of the cochlea in guinea pigs are respectively measured and examined by means of chronic induction of ecochg via canalis facialis and scanning electron microscope in this study.
5.Abstract: A new method for determining proximity parameters α,β,and η in electron-beam lithography is introduced on the assumption that the point exposure spread function is composed of two Gaussians.A single line is used as test pattern to determine proximity effect parameters and the normalization approach is adopted in experimental data transaction in order to eliminate the need of measuring exposure clearing dose of the resist.Furthermore,the parameters acquired by this method are successfully used for proximity effect correction in electron-beam lithography on the same experimental conditions.
6.[Methods]In acute and subacute oral experiments,the effects on DNA damage in peripheral lymphocytes of rats exposed perorally to ACN at different doses (10 mg/kg,30 mg/kg or 50 mg/kg) and for different exposure periods (2 h,14 days,28 days or 42 days) were measured using single cell gel electrophoresis (SCGE) assay.
7.Methods Workers in plastic industry were divided based on their exposure level,85 exposed to VC in workshop at a concentration lower than maximal allowable concentration (MAC) set in the national standards as a low-level group,75 exposed to VC higher than MAC as high level group,and 100 unexposed as healthy control group. DNA damage in lymphocytes was determined with single cell microgel electrophoresis and micronucleus test.
