نتایج جستجو برای: particle growth
تعداد نتایج: 986027 فیلتر نتایج به سال:
In this research, the densification of magnesia nanopowder with a mean particle size of about 100 nm was investigated by spark plasma sintering undera pressures of 80 MPa and at temperature range from 1000 °C to 1400 °C and a heating rate of 50 °C/min for 20 minutes. The density of the samples slowly increased with increasing sintering temperatures to 1200 °C. Afterwards, with more increasing o...
Despite extensive studies into the characterization of particle number size distributions at ground level, realtime measurements above the urban canopy in the megacity of Beijing have never been performed to date. Here we conducted the first simultaneous measurements of size-resolved particle number concentrations at ground level and 260 m in urban Beijing from 22 August to 30 September. Our re...
Abstract. Flow tube reactors are often used to study aerosol kinetics. The goal of this is investigate how best represent complex growth kinetics ultrafine particles within a flow reactor when the chemical processes causing particle unknown. In typical experiment, one measures inlet and outlet size distributions give time-averaged measure growth, which may be difficult interpret if change as tr...
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