U.S. EPA Air Quality Standard for Ozone: in the United States, the National Ambient Air Quality Standard (atReferences or Citations ) for ozone is a maximum 8 hour average outdoor concentration of 0.08 ppm Lung infection due to ozone exposure Shortness of breath due to ozone exposure Th...
The SS was predicted to produce more ozone over 2 days (14 ppbv) than the NS (11 ppbv) despite having lower VOC OH reactivity. Sensitivity tests showed that this was principally due to more NOx being present in the SS outflow because of LNOx. In fact, in the absence of LNOx, the ...
In addition, multiple inflammatory cytokine-stimulated NF-κB pathways are constitutively activated in psoriatic epidermis, resulting in hyperproliferation of keratinocytes [11, 12]. Activation of toll-like receptor 2 (TLR2) in keratinocytes can lead to the nuclear translocation of NF-κB and release...
A standard threshold model was postulated in which there was no association between exposure to ozone and the risk of death below a specified threshold concentration and a linear association (on the logarithmic scale of the proportional-hazards model) above the threshold. The question of whether ...
Plots and bars represent mean values and standard deviations, respectively. The five regions, i.e., Europe, North America, East Asia (without China), China and Central/West Asia are defined in Fig. S3. and 6.0 ± 1.8% in the "sluggishness run" and "no sluggishness run", ...
WRF/Chem simulations were performed and processed under high-performance computing support from Yellowstone (ark:/85065/d7wd3xhc; https://www2.cisl.ucar.edu/supercomputer/yellowstone) provided by NCAR’s Computational and Information Systems Laboratory, sponsored by the NSF, and the national ...
Now compare this to what we were talking about last time. The EPA one hour standard for ozone in the boundary layer, where we live, was 0.12 in those same units. Sothe ozone concentration in the ozone layer is about 200 times the EPA one hour limit, just to give you a relative sense...
aei.pitt.edu 相似文献EPA's McCabe Defends Ozone Proposal From Criticism About Cost, Achievability The Environmental Protection Agency's top air official defended the agency's proposal to revise national ozone standards in response to criticism by Republ... ...
The standard deviation of the annual summertime average DA24 PM2.5 in each period was below 1 µg m-3. The relationship between MDA8 O3 and DA24 PM2.5 for each subperiod was developed (Fig. 1b) following the approach in Li et al.6 and Buysse et al.9 with the PM2.5 data being ...
During recent decades, ozone has evolved into the main disinfection agent at a global scale1. Due to its substantial oxidation potential (+ 2.07 Vvs.standard hydrogen electrode) and facile generation, ozone is nowadays used in a wide variety of disinfection scenarios such eliminating indoor odors2...