A team of researchers at Yale University, Virginia Tech, Temple University and Peking University has recently developed a new approach to enable the collaborative coexistence of cognitive radio (CR) networks over TV white space (TVWS). The term TVWS refers to unused TV channels in between active channels in the VHF and UHF spectra. These unused channels, also known as 'buffer channels,' were originally placed between active channels to minimize broadcasting interference.
* This article was originally published here
Sunday, 3 March 2019
Researchers invent a needle that knows where to go
Syringes and hollow needles have been used to deliver medication for more than a century. However, the precise implementation of these devices depends on the operator, and it can be difficult to deliver medication to delicate regions such as the suprachoroidal space at the back of the eye. Investigators from Brigham and Women's Hospital have developed a highly sensitive intelligent-injector for tissue-targeting (i2T2) that detects changes in resistance in order to properly and safely deliver medication in preclinical testing. Their results are published in Nature Biomedical Engineering.
* This article was originally published here
* This article was originally published here
Cells use sugars to communicate at the molecular level (Update)
The human body is made up of 30 to 40 trillion cells, a large and complex network of blood cells, neurons, and specialized cells that make up organs and tissues. Until now, figuring out which mechanisms control communication between them has proven a significant challenge for the field of cell biology.
* This article was originally published here
* This article was originally published here
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