In this letter, we propose a novel network architecture for integrating terrestrial and non-terrestrial networks (NTNs) to establish connection between ground stations which are unconnected due blockage. We new framework where reconfigurable intelligent surface (RIS) is mounted on an aerodynamic high altitude platform station (HAPS), referred as HAPS-RIS. This can be one of the promising candid...

Studies on the characteristics of hazardous air pollutants (HAPs) in emissions medium-duty diesel trucks are significantly insufficient compared to those heavy-duty trucks. This study investigated regulated and HAPs, such as volatile organic compounds (VOCs), aldehydes, polycyclic aromatic hydrocarbons (PAHs), estimated non-methane hydrocarbon (NMHC) speciation Ten conforming Euros 5 6 were tes...

. This report summarizes results of a project to character& air toxic emissions of selected hazardous air pollutants (HAPS) from the AirPol Gas Suspension Absorption SO2 control technology. This project was sponsored by AirPol Inc., the Tennessee Valley Authority (TVA), and the U.S. Department of Energy (DOE). The GSA process utilizes a semi-dry lime scrubber for SO2 and HCI removal. Most of th...

Abstract. Chemical mechanisms describe the atmospheric transformations of organic and inorganic species connect air emissions to secondary such as ozone, fine particles, hazardous pollutants (HAPs) like formaldehyde. Recent advances in our understanding several chemical systems shifts drivers chemistry warrant updates used transport models Community Multiscale Air Quality (CMAQ) modeling system...

Free space optical (FSO) communication refers to the information transmission technology based on propagation of signals in space. FSO requires that transmitter and receiver directly see each other. High-altitude platforms (HAPs) have been proposed for carrying transceivers stratosphere. A multihop HAP network with links can relay traffic between ground nodes. In this study, we propose an end-t...

An efficient synthesis of enantiopure (R)-heteroarylpyrimidine analogs is described here, which involves introduction of a chiral group, formation and separation of diasteroisomers and final transformation of an amide to an ester. The absolute configuration of the enantiopure HAPs is confirmed by X-ray analysis of their intermediates.

Due to its potential enable global connectivity in remote locations, such as rural areas and islands, Space-Air-Ground networks have become an ambitious solution for terrestrial communication the sixth generation (6G) wireless network. In this paper, we propose a novel structure of Space-Air-Ground-Sea integrated (SAGSINs) study derive coverage probability (CP) users who are annotated surface s...

This paper reports on a project to provide Web-based access to the US Environmental Protection Agency’s (EPA’s) extensive model-based summaries of hazardous air pollutants (HAPs). As part of EPA’s Cumulative Exposure Project, long-term cumulative concentrations of 148 HAPs for the 60,803 census tracts in the 48 contiguous states have been modeled for 1990. The model results include estimates an...