As can be seen, the sample is well-balanced across gender, education levels, and access to car and electric vehicles, demonstrating a reasonable level of representativeness. In terms of age distribution, there is a slight discrepancy between the sample data and the population data, with two age...
the acoustic emission is not intense enough in most cases and the material absorbs large parts of the signal. In general, at lower frequencies, background noise disturbs the measurement, e.g., vibrations from vehicles and noise from pumps or from flowing medium (Williams, 1980;Matthews, 1983)...
The agriculture sector in the EU also produces considerable amounts of NOxand N2O emissions. For NOx, the emission from agriculture was about 600 kt NOx, accounting for 8% of the total NOxemission in the EU17. For N2O, the total emission from agriculture in 2019 was estimated to be 627...
Currently, Peterbilt offers three models of battery electric zero-emissions vehicles. The Model 579EV is aimed at drayage and region haul applications with gross combined weight rating (GCWR) of up to 82,000 lbs. and a range of approximately 150 miles touting 670 HP. It also offers an elect...
We thank Jim Moses at LAXFUEL for providing the fuel analysis information and Robert Freeman and Steve Baughcum for discussions. This work was supported by the NASA Advanced Air Vehicles Program, Advanced Air Transport Technology Project and the DLR Aeronautics Research Programme. R.H.M., E.C....
3 appeared irregular and bright, with strong C, O, and Mg signals in its X-ray spectrum. For this study, Mg-rich particles were in the coarse fraction and are related to soil dust resuspended by wind or vehicles. Their morphology was smooth edges and bright (Fig. ...
It has long been recognized that particles expelled during human expiratory events, such as sneezing, coughing, talking, and breathing, serve as vehicles for respiratory pathogen transmission1–6. The relative contribution of each expiratory activity in transmitting infectious microorganisms, however, ...
Fig. 15 shows an overall decline of COTC which can be explained by the reduction of emissions from source sectors in China, such as iron and steel industries, residential sources, gasoline-powered vehicles, and construction materials industries (Zheng et al., 2018b). The largest negative trends...
be regressive in six of the eight cities examined, as low-skilled workers bear greater burden due to the limited availability of public transportation (active mobility is not considered) near their residences and workplaces, longer commuting distances, and a higher proportion of polluting vehicles. ...
A system and method for optimizing the regeneration cycle of an emission control device, such as a lean NOx trap, is disclosed wherein the device is filled to a predetermined fraction of its existing capacity and is then completely emptied during a device purge. As device capacity is substantia...