The dominant radio emission mechanism in radio-quiet quasars (RQQs) is an open question. Primary contenders include: low-power jets, winds, star-formation and coronal emission. Our work suggests that polarization emission-line studies can help to distinguish between these scenarios determine the primary contributor. multi-frequency, multi-scale study has revealed a composite jet "wind" outflow ...

Nitrogen oxides (NOx) are key pollutants for the improvement of ambient air quality. Within this study we estimated the historical NOx emissions in China for the period 1995–2010, and calculated future NOx emissions every five years until 2030 under six emission scenarios. Driven by the fast growth of energy consumption, we estimate the NOx emissions in China increased rapidly from 11.0 Mt in 1...

Over the past few decades, scientists around the world have revealed the sinister impacts that persistent organic pollutants (POPs) could inflect on man and his environment. Growing interest in monitoring and managing POPs was building up at a worldwide level and Egypt was no exception. Egypt has ratified the Stockholm Convention for controlling the emission of POPs and had its National Impleme...

The flaring and fading radio, optical, and X-ray afterglows from GRB 970508 are modeled by a highly relativistic plasma sphere which decelerates by sweeping up ambient gas. The afterglow emission is assumed to be synchrotron radiation emitted by nonthermal electrons in the magnetized plasmoid. The temporal behavior of the delayed emission is controlled by the evolution of the Doppler factor and...

A hybrid-electric vehicle powertrain architecture consists of single or multiple driving modes, i.e., connection arrangements among engine, motors and vehicle output shaft that determine distribution of power. While most architecture development work to date has focused primarily on passenger cars, interest has been growing in exploring architectures for special-purpose vehicles such as vans or...

A host of technologies has been developed to achieve these aims of the smart grid. Some of these technologies include plug-in electric vehicle, demand response program, energy storage system and renewable distributed generation. However, the integration of the smart grid technologies in the power system operation studies such as economic emission unit commitment problem causes two major challen...

Most of the spectrum occupancy measurement campaigns performed to the date in the context of cognitive radio are based on measurements in outdoor high points such as building roofs, balconies and towers. Although these measurement scenarios enable a more accurate estimation of the primary transmitters’ spectral activity, they may not be representative of the spectrum occupancy perceived by a co...

honey contains a wide variety of vitamins, minerals, amino acids and antioxidants. the vitamins found in honey include niacin, riboflavin and pantothenic acid; minerals present include calcium, copper, iron, magnesium, manganese, phosphorus, potassium and zinc. in addition honey contains a variety of flavonoids and phenolic acids which act as antioxidants, scavenging and eliminating free radica...