The processing situation of tailings in Taochong Mining Company, importance and necessity of zero-discharge of tailings and feasibility of replacement of iron ore with iron tailings in cement production are analyzed in this paper.

This paper uses the portable emission measurement system(PEMS) OEM-2100 to collect the real-time vehicle emission data at intersections as well as on the road,and develops the analysis platform for the emission data based on GIS and corresponding secondary developing tools.

The On-board Emission Measurement System(OEM) is a real-time vehicle emission measuring system for real-world driving and road conditions.

In this paper,the main factor is analyzed that influence the emission of XIALI taxi after turned into bi-fuel vehicle.

The engine performance and emissions are researched.

Reducing exhaust emission from construction machines and vehicles;

The more and more strict limit for diesel exhaust emissions requires to further improve diesel enginetechniques and to apply exhaust after - treatment techniques.

In this paper, the study on exhaust emission from 2-stroke, 4-stroke gasoline engine and diesel engine, burning methanol-gasoline blend fuel and M100 methanol fuel has been reported.