The deleterious ingredients in gas emission of sculpturing organic glass were studied,using gas chromatography-mass spectrometry coupled with 3-step preconcentrator.
There are rough endoplastic reticula and Golgi complexes in the cells of the androgenic gland, indicating that it seems to secret the proteinoid hormone.
Coking residuary water contains phenol and cyanogens, which contaminate water source badly. Therefore, the coking residuary water has to be dealt with and discharged.
Concentrations of deicer and anti-icer components previously observed in airport effluents have, at times, exceeded the toxicity levels shown in results of this study.
Rising the temperature continuously , when it in the valves runs over the temperature of drainage, the detrusion of top material causes the port A close.
Development trend of domestic third-stage multiclone is expounded as well as the problems such as single tube wearing, low capacity of single tube and the inappropriate catalyst exhaustion.
This device should be installed at the furthermost downstream end of the supply pipe or fixture where temporary spillage due to critical flow pressure conditions can be discharged harmlessly.
This paper introduces the formation of by-products in the typical process for sodium hydrosulphite and the waste treatments for the exhaust gas,waste water and waste residue in the route.
In a testing of petrolic engine, about 70% to 80% of nonmethane hydrocarbon is emitted into atmosphere without catalysis conversion in theoment of coldstart, so that serious pollution is produced.