Characterization and distribution of lead in soil and dust along Yanan Overhead Road in Shanghai City were studied. The total lead content in soil was 93.61 mg/kg in average, 3.7 times of the background value in Shanghai, and the total lead content in dust was 324.62 mg/kg.
It shows that the service on workdays is already at the critical state to full congestion, especially on the S-N Viaduct with 8:00~10:00 am and 2:00~6:00 pm at its worst.
Control the viaduct in earthquake using active control method, LQR and LQG control algorithms are employed, and the effect of two methods is discussed.
The paper summarizes several structural styles of elevated rail transit station,and explores the main difficul- ties in structure design,especially the selection of calculation mode and parameter for integrated bridge and sta- tion construction.
Benzoxycarbonyl chloride was selected as amino group protection agent, and the yield was elevated by replacing sodium bicarbonate with triethyl amide as the acid's neutralizer.
To model the carbon cycle and predict the carbon source/sink of forest ecosystems, we must first understand the relative contributions of root/rhizosphere and microbial respiration to total soil respiration under elevated CO2 concentrations.
To avoid the time overhead of state switching, we use a time estimation technique to analyze the computation time, and insert the on instruction before reaching the communication intervals.
To avoid the inherent communication overhead of a wavelet-based fusion method, a special design called redundant partitioning is used, which is inspired by the characteristics of wavelet transform.
Due to the uncertainty of both ground motions and structural capacity, it is necessary to consider the seismic performance of viaduct structures using the probabilistic method.
The extracellular basal lamina of the basement membrane is confluent with glial cell capillary walls and may prove to be a viaduct for the transmission of hemolymph-borne substances to the retina or of retinal degradation products to the hemolymph.