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Flexplay
Flexplay is a trademark for a discontinued DVD-compatible optical video disc format with a time-limited (usually 48-hour) playback. They are often described as "self-destructing", although the disc merely turns black or dark red and does not physically disintegrate. The technology launched in August 2003 as a joint-venture with The Walt Disney Company, Disney's Buena Vista Home Entertainment under the name eZ-D. The Flexplay concept was invented by two professors, Yannis Bakos and Erik Brynjolfsson, who founded Flexplay Technologies in 1999. The technology was developed by Flexplay Technologies and General Electric. Origins The technology was originally intended as an alternative means for the short-term rental of newly released movies. Since the disc is capable of being used in any standard DVD player, the manufacturers hoped that it would succeed where other time-limited DVD technologies, such as DIVX, failed. Test marketing of eZ-D discs began in August 2003, but was canceled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yannis Bakos
Yannis Bakos is a professor at the Leonard N. Stern School of Business at New York University. His primary area of expertise is the economic and business implications of information technology, the Internet, and online media. He is the co-founder (with Chris F. Kemerer) of thWorkshop on Information Systems and Economics(WISE), and the co-inventor of Flexplay DVDs. Early life Bakos holds a Ph.D. in Management and an MBA in Finance from the MIT Sloan School of Management. He also received a master's degree in Electrical Engineering and Computer Science and a B.S. in Computer Engineering from MIT's Department of Electrical Engineering and Computer Science. Before coming to NYU, Professor Bakos was on the faculty of thMerage School of Business at the University of California, Irvineand the Sloan School of Management at MIT. Career Bakos' early work showed that the internet would reduce the search costs of buyers and sellers, and that the resulting electronic marketplaces would result i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erik Brynjolfsson
Erik Brynjolfsson is an American academic, author and inventor. He is the Jerry Yang and Akiko Yamazaki Professor and a Senior Fellow at Stanford University where he directs the Digital Economy Lab at the Stanford Institute for Human-Centered AI, with appointments at SIEPR, the Stanford Department of Economics and the Stanford Graduate School of Business. He is also a research associate at the National Bureau of Economic Research and an author of several books. From 1990 to 2020, he was a professor at MIT. Brynjolfsson contributes IT productivity research and work on the economics of information, the economics of AI, and the digital economy more generally. According to Martin Wolf, "No economist has done more to promote the revolutionary implications of information technology than MIT’s Erik Brynjolfsson." Biography Erik Brynjolfsson was born to Marguerite Reman Brynjolfsson and Ari Brynjolfsson, a nuclear physicist. He attended Wayland High School, in Wayland, Massachuset ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DIVX
DIVX (Digital Video Express) is a discontinued digital video format. Created in part by Circuit City, it was an unsuccessful attempt to create an alternative to video rental in the United States. The format's poor reception from consumers resulted in major financial losses for Circuit City and is credited with being part of the company's downfall. Format DIVX was a rental format variation on the DVD player in which a customer would buy a DIVX disc (similar to a DVD) for approximately US$4.50, which was watchable for up to 48 hours from its initial viewing. After this period, the disc could be viewed by paying a continuation fee to play it for two more days. Viewers who wanted to watch a disc an unlimited number of times could convert the disc to a "DIVX silver" disc for an additional fee. "DIVX gold" discs that could be played an unlimited number of times on any DIVX player were announced at the time of DIVX's introduction, but no DIVX gold titles were ever released. Eac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuco Dye
A leuco dye (from the Greek λευκό ''leuko'': white ) is a dye which can switch between two chemical forms, one of which is colorless. Reversible transformations can be caused by heat, light or pH, resulting in examples of thermochromism, photochromism and halochromism, respectively. Irreversible transformations typically involve reduction or oxidation.Chemistry and Applications of Leuco Dyes. Ramaiah Muthyala. 302 pag. Springer; 1997 edition. The colorless form is sometimes referred to as the leuco form. Leuco dyes form the basis of thermal printer papers and certain pH indicators. Examples The most common example is in applying sulfur dyes and vat dyes, with indigo being a classic case. This is characteristically purple but is also completely insoluble in water, meaning that it cannot be applied to clothes directly. It is instead reduced to indigo white (sometimes Leucoindigo), which is water-soluble but colorless. When a submerged fabric is removed from a dyebath o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thionin
Thionins are a family of small proteins found solely in higher plants. Typically, a thionin consists of 45–48 amino acid residues. 6–8 of these are cysteine forming 3–4 disulfide bonds. They include phoratoxins and viscotoxins. Alpha- and beta- thionins are related to each other. The gamma thionins have a superficially similar structure but are an unrelated class of protein, now called plant defensins. Activity The proteins are toxic to animal cells, presumably attacking the cell membrane and rendering it permeable: this results in the inhibition of sugar uptake and allows potassium and phosphate ions, proteins, and nucleotides to leak from cells. Thionins are mainly found in seeds where they may act as a defence against consumption by animals. A barley (''Hordeum vulgare'') leaf thionin that is highly toxic to plant pathogens and is involved in the mechanism of plant defence against microbial infections has also been identified. The hydrophobic protein crambin from t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Methylene Green
Methylene green is a heterocyclic aromatic chemical compound similar to methylene blue. It is used as a dye. It functions as a visible light-activated photocatalyst In chemistry, photocatalysis is the acceleration of a photoreaction in the presence of a photocatalyst, the excited state of which "repeatedly interacts with the reaction partners forming reaction intermediates and regenerates itself after each ... in organic synthesis. References External links methylene green(at stainsfile) Histology Thiazine dyes Phenothiazines Chlorides {{heterocyclic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taylor's Blue
Taylor's University (commonly referred to as Taylor's) is a private university in Subang Jaya, Selangor, Malaysia. It is Malaysia's top private university based on the QS World University Rankings. It was founded in 1969 as a college, was awarded university college status in 2006, and university status in 2010. Taylor's University is a member of the Taylor's Education Group, which also includes British University Vietnam, Taylor’s College, Garden International School, Nexus International School, Australian International School Malaysia, and Taylor’s International School. History In 2006, Taylor’s was granted ‘University College’ status, which resulted in two distinct identities under the tertiary arm of the brand – Taylor’s College and Taylor’s University College. Work commenced to build the RM450 million Taylor's University Lakeside Campus, in Subang Jaya, in early 2007 and was completed in January 2010. Officially awarded as a full-fledged university st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Janus Green B
Janus Green B is a basic dye and vital stain used in histology. It is also used to stain mitochondria supravitally, as was introduced by Leonor Michaelis Leonor Michaelis (16 January 1875 – 8 October 1949) was a German biochemist, physical chemist, and physician. He is known for his work with Maud Menten on enzyme kinetics in 1913, as well as for work on enzyme inhibition, pH and quinones. ... in 1900. The indicator Janus Green B changes colour according to the amount of oxygen present. When oxygen is present, the indicator oxidizes to a blue colour. In the absence of oxygen, the indicator is reduced and changes to a pink colour. References Staining dyes Azo dyes Phenazines Chlorides Aromatic amines Anilines Diethylamino compounds {{alkanederivative-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meldola's Blue
Raphael Meldola FRS (19 July 1849 – 16 November 1915) was a British chemist and entomologist. He was Professor of Organic Chemistry in the University of London, 1912–15. Life Born in Islington, London, he was descended from Raphael Meldola (1754–1828), a theologian who was acting minister of the Spanish and Portuguese Jews in London, 1804. Meldola was the only son of Samuel Meldola; married (1886) Ella Frederica, daughter of Maurice Davis of London. He was educated in chemistry at the Royal College of Chemistry, London. There is a portrait of Meldola (oil on canvas) by Solomon J. Solomon in the Royal Society collection; also a photograph by Maull & Fox, visiting card size. Career Meldola worked in the private laboratory of John Stenhouse (FRS 1848). He was appointed Lecturer, Royal College of Science (1872) and assisted Norman Lockyer with spectroscopy. Meldola was in charge of the British Eclipse Expedition to the Nicobar Islands (1875) and was Professor of Chemist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Disc
An optical disc is a flat, usuallyNon-circular optical discs exist for fashion purposes; see shaped compact disc. disc-shaped object that stores information in the form of physical variations on its surface that can be read with the aid of a beam of light. Optical discs can be reflective, where the light source and detector are on the same side of the disc, or transmissive, where light shines through the disc to be detected on the other side. Optical discs can store analog information (e.g. LaserDisc), digital information (e.g. DVD), or store on the same disc (e.g. CD Video). Their main uses are the distribution of media and data, and long-term archival. Design and technology The encoding material sits atop a thicker substrate (usually polycarbonate) that makes up the bulk of the disc and forms a dust defocusing layer. The encoding pattern follows a continuous, spiral path covering the entire disc surface and extending from the innermost track to the outermost track ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toluidine Blue O
Toluidine blue, also known as TBO or tolonium chloride (INN) is a blue cationic (basic) dye used in histology (as the toluidine blue stain) and sometimes clinically. Test for lignin Toluidine blue solution is used in testing for lignin, a complex organic molecule that bonds to cellulose fibres and strengthens and hardens the cell walls in plants. A positive toluidine blue test causes the solution to turn from blue to blue-green. A similar test can be performed with phloroglucinol- HCl solution, which turns red. Histological uses Toluidine blue is a basic thiazine metachromatic dye with high affinity for acidic tissue components. It stains nucleic acids blue and polysaccharides purple and also increases the sharpness of histology slide images. It is especially useful today for staining chromosomes in plant or animal tissues, as a replacement for Aceto-orcein stain. Toluidine blue is often used to identify mast cells, by virtue of the heparin in their cytoplasmic granules. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
