Started with existing problems of city construction in the aspects of urban land use,traffic,greening,environmental quality and sanitary facilities,and proposes referential suggestions for sustainable development planning,in order to make city gradually achieve the target of ecological dwelling environment and finally fulfill the requirement of sustainable development.
The results show that under the condition of that the outflow equals to 110 mL/min,the water which has been disinfected by the triiodine resin is secure for drinking when the disinfected time is equal to or exceed 12.05 s,and the bacteriological indexes and turbidity of which are in accord with the sanitary standard of drinking water for armed forced in wartime,and the concentration of residual iodine is less than 0.7 mg/L,which is harmless to human body.
As the strain sensing element of a structural health monitoring, the study and the application of the fibre-optic bragg grating (FBG) have been widely accepted.
Health diagnoses of ecosystems subject to a typical erosion environment in Zhifanggou watershed, north-west China
Ecosystem health is the object of water and soil conservation and ecological building in loess hilly areas under erosion environment.
Using principles of ecosystem health quantitative assessment and diagnosis index selection, 17 factors were considered from three aspects: resource and environmental capacity, social and economic impact, and ecological services.
An evaluation index system on ecosystem health was established for a small watershed under erosion conditions.
It was concluded that the physiological and hygienic norm setting for children working with a PC should consider the five-year-olds as a separate group.
Experimental physiological, psychological, and hygienic longitudinal studies were carried out with children who began systematic developing education in the first childhood period (from 4 years) at preschool educational institutions.
Experimental physiological, psychological, and hygienic studies were conducted for three years in the same fifth to seventh grade schoolchildren from 11 to 13 years of age.
The applicability of standard methods to determining tar and nicotine in tobacco smoke condensates by the mechanical smoking of cigarettes was assessed for the differentiation of samples satisfying currently accepted hygienic standards.
Working conditions in the production and consumption of inhibitors of metal corrosion can be optimized by meeting hygienic, medical, and prophylactic requirements and those on sanitary engineering.