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3,3′-Diaminobenzidine (DAB) is an organic compound with the formula (C 6 H 3 (NH 2) 2) 2. This derivative of benzidine is a precursor to polybenzimidazole, which forms fibers that are renowned for their chemical and thermal stability. [1] As its water-soluble tetrahydrochloride, DAB has been used in immunohistochemical staining of nucleic ...
Digital multimedia broadcasting (DMB) and DAB-IP are both suitable for mobile radio and TV because they support MPEG 4 AVC and WMV9 respectively as video codecs. However, a DMB video subchannel can easily be added to any DAB transmission, as it was designed to be carried on a DAB subchannel.
Chart showing the listening share of the United Kingdom's digital radio platforms – DAB(+), digital TV and online through a device or smartphone/tablet app. In the United Kingdom, the uptake of DAB has increased since the launch of the BBC national DAB ensemble in 1995.
The audio quality of Australian DAB is correspondingly low - only 80 kbps for ClassicFM, for example, and most channels have much lower bitrates than this. So DAB is in general well below the 128 kbps traditionally accepted as CD quality, and an interference-free FM broadcast will almost certainly provide better audio. [dubious – discuss]
A ribosome is a biological machine that utilizes protein dynamics. At the first C.E.C. Workshop, in Brussels in November 1991, bioelectronics was defined as 'the use of biological materials and biological architectures for information processing systems and new devices'.
The first hi-fi DAB tuners go on sale, at a cost of around £2,000. 14 November – BBC Parliament's audio feed on the BBC's national multiplex is closed down. 2001. Digital News Network launches to provide rolling news for the regional DAB multiplexes then licensed in England and Wales. [7] 2002. 2 February – BBC Radio 5 Live Sports Extra is ...
Chart of the Morse code 26 letters and 10 numerals [1]. This Morse key was originally used by Gotthard railway, later by a shortwave radio amateur [2]. Morse code is a telecommunications method which encodes text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs.
In biology, an identification key, taxonomic key, or frequently just key, is a printed or computer-aided device that aids in the identification of biological organisms. Historically, the most common type of identification key is the dichotomous key , a type of single-access key which offers a fixed sequence of identification steps, each with ...