LOS ANGELES (Reuters) - Radiohead singer Thom Yorke on Friday released an album via BitTorrent, the British rocker said, marking the first time the online file transfer system often associated with piracy has been used to sell music. "Tomorrow's Modern Boxes," Yorke's first solo album in eight years, features eight songs and was produced by longtime collaborated Nigel Godrich. Users will be charged $6 to have access through software company BitTorrent to a "paygated" bundle of files known as a torrent, which breaks the files up into small pieces which are downloaded from one or more peer-to-peer sources, Yorke and Godrich said. Torrents have been touted as a more efficient way to download large amounts of data using less bandwidth, but some torrent-hosting sites have been targeted by authorities as the means to illegally distribute copyrighted material. "It's an experiment to see if the mechanics of the system are something that the general public can get its head around," Yorke and Godrich said in a statement. "If it works well, it could be an effective way of handing some control of internet commerce back to the people who are creating the work," the statement added. Yorke and his band Radiohead have experimented with alternative distribution models in the past, releasing their 2007 album "In Rainbows" first as a download on their website where customers could pay whatever price they wanted. Radiohead's 2011 album "The King of Limbs" was also self-released online before physical copies were released. The music industry has suffered a steep drop in album sales since the beginning of file sharing and online sales in the late 1990s. Year-to-date album sales are down 15 percent compared with last year, according to music magazine Billboard. (Reporting by Eric Kelsey; Editing by Marguerita Choy)
The maintenance of undifferentiated human pluripotent stem cells (hPSC) under xeno-free condition requires the use of human feeder cells or extracellular matrix (ECM) coating. However, human-derived sources may cause human pathogen contamination by viral or non-viral agents to the patients. Here we demonstrate feeder-free and xeno-free culture system for hPSC expansion using diffusion assisted synthesis-grown nanocrystalline graphene (DAS-NG), a synthetic non-biological nanomaterial which completely rule out the concern of human pathogen contamination. DAS-NG exhibited advanced biocompatibilities including surface nanoroughness, oxygen containing functional groups and hydrophilicity. hPSC cultured on DAS-NG could maintain pluripotency in vitro and in vivo, and especially cell adhesion-related gene expression profile was comparable to those of cultured on feeders, while hPSC cultured without DAS-NG differentiated spontaneously with high expression of somatic cell-enriched adhesion genes. This feeder-free and xeno-free culture method using DAS-NG will facilitate the generation of clinical-grade hPSC.
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The Stanford Distributed Acoustic Sensing Array (SDASA-1) has been continuously recording seismic data since September 2016 on 2.5 km of single mode fiber optics in existing telecommunications conduits under Stanford's campus. The array is figure-eight shaped and roughly 600 m along its widest side with a channel spacing of roughly 8 m. This array is easy to maintain and is nonintrusive, making it well suited to urban environments, but it sacrifices some cable-to-ground coupling compared to more traditional seismometers. We have been testing its utility for earthquake recording, active seismic, and ambient noise interferometry. This talk will focus on earthquake observations. We will show comparisons between the strain rates measured throughout the DAS array and the particle velocities measured at the nearby Jasper Ridge Seismic Station (JRSC). In some of these events, we will point out directionality features specific to DAS that can require slight modifications in data processing. We also compare repeatability of DAS and JRSC recordings of blasts from a nearby quarry. Using existing earthquake databases, we have created a small catalog of DAS earthquake observations by pulling records of over 700 Northern California events spanning Sep. 2016 to Jul. 2017 from both the DAS data and JRSC. On these events we have tested common array methods for earthquake detection and location including beamforming and STA/LTA analysis in time and frequency. We have analyzed these events to approximate thresholds on what distances and magnitudes are clearly detectible by the DAS array. Further analysis should be done on detectability with methods tailored to small events (for example, template matching). In creating this catalog, we have developed open source software available for free download that can manage large sets of continuous seismic data files (both existing files, and files as they stream in). This software can both interface with existing earthquake networks, and 2ff7e9595c
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