Abstract The relationship between thresholds of free radical generation and atomization under ultrasound exposure was investigated to elucidate the mechanisms ultrasonic atomization. In experiments gradually increase transducer driving voltage, generation, a quick transition water surface shape from protuberance fountain, had same threshold. using acoustic loading conditions with different shap...

We present Very Large Array (VLA) observations of the water maser emission towards IRAS 16552-3050. The maser emission shows a velocity spread of ≃ 170 km s, and a bipolar distribution with a separation between the red and blueshifted groups of≃ 0.08. These observations and the likely post-AGB nature of the source indicate that IRAS 16552-3050 can be considered as a member of the “water fountai...

Network-coded multiple access (NCMA) is a communication scheme for wireless multiple-access networks where physical-layer network coding (PNC) is employed. In NCMA, a user encodes and spreads its message into multiple packets. Time is slotted and multiple users transmit packets (one packet each) simultaneously in each timeslot. A sink node aims to decode the messages of all the users from the s...

We report on the design, construction, and preliminary measurements on the resonator of a continuous Cs fountain frequency standard. The construction of the resonator is described, preliminary measurements of the available atomic flux, and of the beam temperature are presented, along with the first Ramsey fringes (width 1 Hz) obtained in this new type of fountain. We discuss theoretical aspects...

Water fountains have been produced by sculptors, architects and engineers over the years in Nigeria, however production of water ceramics is not popular could be rarely seen public spaces, longues interiors buildings especially Anambra State. In view this; this project entitled “Production a Fountain using Ceramics for Interior Decoration State” was designed to enlighten society that ceramic ma...

Fountain codes have demonstrated great results for the binary erasure channel and have already been incorporated into several international standards to recover lost packets at the application layer. These include multimedia broadcast/multicast sessions and digital video broadcasting on global internet-protocol. The rateless property of Fountain codes holds great promise for noisy channels. The...

BACKGROUND In January 2015, Berkeley, California became the first city in the Unites States to impose a tax on sugar-sweetened beverages. The tax is intended to discourage purchase of sugary beverages and promote consumption of healthier alternatives such as tap water. The goal of the study was to assess the condition of public drinking water fountains and determine if there is a difference in ...

Field and laboratory studies were carried out to test factors expected to be relevant for the germination of fountain grass: (1) light; (2) emergence of fountain grass seedlings from depths of 0, 2.5, and 5 cm; (3) fire passing over exposed and buried seeds; (4) laboratory heat treatment mimicking exposure to grass fire. Both fire in the field and heat applied in the laboratory killed fountain ...

Fountain codes are record-breaking sparse-graph codes for channels with erasures – such as the internet, where files are transmitted in multiple small packets, each of which is either received without error or not received. Standard file-transfer protocols simply chop a file up into K packet-sized pieces, then repeatedly transmit each packet until it is successfully received. A back-channel is ...