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Information about the long-term trends of surface and tropospheric ozone is important for assessing the impact of ozone on human health, vegetation, and climate. Long-term measurements from East Asia, especially China’s eastern provinces, are urgently needed to evaluate potential changes of tropospheric ozone over this economically rapid developing region.(More)
Size-resolved and bulk activation properties of aerosols were measured at a regional/suburban site in the North China Plain (NCP), which is occasionally heavily polluted by anthropogenic aerosol particles and gases. A Cloud Condensation Nuclei (CCN) closure study is conducted with bulk CCN number concentration (NCCN) and calculated CCN number concentration(More)
Measurements of ozone and its precursors conducted within the HaChi (Haze in China) project in summer 2009 were analyzed to characterize volatile organic compounds (VOCs) and their effects on ozone photochemical production at a suburban site in the North China Plain (NCP). Ozone episodes, during which running 8-h average ozone concentrations exceeding 80(More)
The relative humidity (RH) dependence of aerosol light scattering is an essential parameter for accurate estimation of the direct radiative forcing induced by aerosol particles. Because of insufficient information on aerosol hygroscopicity in climate models, a more detailed parameterization of hygroscopic growth factors and resulting optical properties with(More)
Up to now, most of people are still cooking in the kitchen, which makes them feel fatigued and also makes air polluted. With the development of the numerical control technology, it becomes more and more urgent to apply the related technology to the automatic cooking field. In this paper, the cooking techniques for the Chinese dishes is introduced and an(More)
During the electromagnetic launching process, the supporting insulators suffer from the complicated environments. Under the action of strong pulse stress, high temperature, arc and other factors, it will directly lead to insulation failure and performance degradation in electromagnetic launcher system. Therefore, it is necessary to study the characteristics(More)
Surface flashover across the insulators in vacuum is the major limitation of the performance of the high power system. Surface characteristics of Insulator effect its surface flashover performance obviously, appropriate surface treatment can increase the surface flashover voltage. Ion implantation technology is an effective surface modification tool, it can(More)
A pump-signal combiner with a new processing method is reported in this paper. The core deformation of the signal fiber can be avoided by this method, and an 8+1 to 1 pump-signal combiner with 100 μm core-signal fiber feed-through is fabricated. The pump and signal coupling efficiencies are 96.8% and 98.0%, respectively. Furthermore, this pump-signal(More)
Based on the demands of TEA CO2 laser, high power, high-precision and high repetitive rate charging technologies of capacitor charging power supply was discussed in the paper. Capacitor charging power supply adopted series resonant circuit has constant current and “fixed voltage steps” charging characteristics which were analyzed in the paper(More)
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