[en] During August 2008 to August 2009, both alpha etched track detector technique and RAD7 radon monitor were used to monitor the indoor radon concentrations at 83 sites of 79 buildings, bungalows and villas in Urumqi region. The results indicate that the indoor radon concentrations are in range of 19-154 Bq/m³, with an average of 55.4 Bq/m³, significantly higher in winter than in summer, and equal in spring and autumn. The coal burning may be the main cause of higher radon concentrations. As a result, the prevention and control measures are put forward. (authors)

[en] This paper briefly introduces the aboveground layout scheme and integral sinking layout scheme of conventional island of nuclear power plants. Technological-economic analysis formula are given, as a result, main factors influencing scheme selection is obtained. Determination of the layout scheme selection and optimization direction through the curve between the accumulative NPV and related factors is brought forward. The paper carries out the technological-economic comparison to the two schemes referred to a 1000 MW level nuclear power project as the example, getting the curve between the accumulative NPV and the plant ground elevation, and offering the method of selecting the vertical layout scheme of conventional island and vertical layout optimization direction. (authors)

[en] To study the clinical significance of serum SOD in patients with severe acute respiratory syndrome (SARS), the level of serum SOD in 66 patients with SARS was measured by RIA and compared with control group. The results showed that the level of serum SOD in patients with SARS was significantly lower than that in control group. The serum SOD level in severe type of patients was lower than that in general type. The serum SOD level in convalescent patients was increased, but still lower than that in control group. There were excessively free radicals in patients with SARS, so SOD was depleted excessively. The change of SOD in patients with SARS maybe reflect the severe degree of ill. Dynamic detection of serum SOD level was helpful in analyzing serious or mild SARS. It may be an important therapeutic measure that excessively free radicals were eliminated from the body

[en] To study the clinical significance of serum collagen type IV in patients with severe acute respiratory syndrome (SARS), the level of serum collagen type IV in 66 patients with SARS was measured by RIA and compared with control group. The results showed that level of serum collagen type IV in patients with SARS was significantly higher than that in control group. The positive rate of level of collagen type IV in convalescent patients was 28.7%. Higher level of serum collagen type IV was found in patients whose chest X-ray examination showed that the focus was absorbed slowly. There was higher level of serum collagen type IV in some patients with SARS and this was related to focus absorption and extent of fibrosis. The level of serum collagen type IV may be a better indicator of monitoring extent of pneumonofibrosis

[en] To investigate drug resistance of mycobacterium tuberculosis in different age group, compare detecting effect of two methods and evaluate their the clinical application value, all of the strains of mycobacterium tuberculosis were tested for resistance to RFP, INH SM PZA and EMB by the absolute concentration method on Lowenstein-Jensen medium and the mutation of the rpoB, katG, rpsL, pncA and embB resistance genes in M. tuberculosis was tested by PCR-SSCP. In youth, middle and old age group, the rate of acquired drug resistance was 89.2%, 85.3% and 67.6% respectively, the gene mutation rate was 76.2%, 81.3% and 63.2% respectively. The rate of acquired drug resistance and multiple drug resistance in youth group was much higher than those in other groups. The gene mutation was correlated with drug resistance level of mycobacterium tuberculosis. The gene mutation rate was higher in strains isolated from high concentration resistance than those in strains isolated from low concentration resistance. The more irregular treatment was longer, the rate of drug resistance was higher. Acquired drug resistance varies in different age group. It suggested that surveillance of drug resistence in different age group should be taken seriously, especially in youth group. PCR - SSCP is a sensitive and specific method for rapid detecting rpoB, katG, rpsL, pncA and embB genes mutations of MTB. (authors)