Quantum Physics


Positron Luminescence

Authors: George Rajna

Now in a new study, researchers have found that a beam of positrons (positively charged anti-electrons) incident on a phosphor screen produces significantly more luminescence than an electron beam does. [26] Researchers from Tomsk Polytechnic University (Russia) and Bangor University (UK) have experimentally verified anomalous amplitude apodization for non-spherical particles for the first time. This phenomenon makes it possible to boost the magnifying power of microscopes and to record molecules and viruses more effectively. [25] With a thin probe and a burst of microwaves, doctors can eradicate cancer cells without opening up a patient for surgery. [24] A new source of intense terahertz (THz) radiation, which could offer a less harmful alternative to X-rays and has strong potential for use in industry, is being developed by scientists at the University of Strathclyde and Capital Normal University in Beijing. [23] Biomedical engineers at the University of California, Davis, have developed a new technique for measuring blood flow in the human brain, which could be used in patients with stroke or traumatic brain injury, for example. [22] According to a new study in Cell, it may be possible to teach machines how to pick out features in neurons and other cells that have not been stained or undergone other damaging treatments. [21] The possibility of cognitive nuclear-spin processing came to Fisher in part through studies performed in the 1980s that reported a remarkable lithium isotope dependence on the behavior of mother rats. [20] And as will be presented today at the 25th annual meeting of the Cognitive Neuroscience Society (CNS), cognitive neuroscientists increasingly are using those emerging artificial networks to enhance their understanding of one of the most elusive intelligence systems, the human brain. [19] U.S. Army Research Laboratory scientists have discovered a way to leverage emerging brain-like computer architectures for an age-old number-theoretic problem known as integer factorization. [18]

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[v1] 2018-04-30 09:02:57

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