Based on sampling and laboratory analyzing silt loading of 82 city roads and 56 suburb paved roads in Beijing,we using AP-42 emission factor model studied emission characteristics of paved road fugitive dust,and analyzed two methods to determine silt loading of different roads.

The simulation result of effection of road dust load,velocity,distance was shown that The simulation result of effection of road sur.

Analysis and Simulation of burden on a cell in TD-SCDMA system;

Results Burden score of family caregivers for stroke survivors was 48.

All the participants were assessed by the Burden Scale and the Social Support Scale of the main home infirmarian of the stroke patients.

FEA of 11.00R20 TBR tire under load;

Influence of load fluctuation on reaction system of LLDPE plant and its countermeasure;

Analysis about unbalanced of twin-motor load of belt conveyor;

e,a nutrient balance model of the agricultural land,an emission model that was used for the estimation of nutrient emissions from catchments to river systems,and a riverine retention model that was used for the estimation of nutrient loads from emissions.

It signifies much to the fast calculation in engineering and the research on the variable time step algorithm of air conditioning loads.

According to the non-point source pollution characteristics of sediment-laden river,combining with the pollutant content relation between the river bed sediment and inner drainage area surface soil,advising the non-point source pollution loads estimation method of soil and water loss region in limited data direction and applying the method in Huaxian section of the Weihe River Basin.