Digital scanner

All the systems described so far are characterized by a fixed light source, for instance in a digital scanner a fluorescence fight source produces the white light that is used to illuminate the sample. 

Botelho, B. G., L. P. de Assis, and M. M. Sena. 2014. Development and analytical validation of a simple multivariate calibration method using digital scanner images for Sunset Yellow determination in soft beverages. Food Chem. 159 175-180. 

Keywords— VL-spectrophotometer, Digital camera. Digital scanner. Medical-grade siUcone. 

On the other hand in the last decade the performance of consumer electronics was steadily growing. This gave rise to a number of low-cost advanced optical equipments such as digital scanners, cameras, and screens whose characteristics largely fit the requirements necessary to capture changes of optical properties of sensitive layers in many practical applications. 

The first demonstration in this direction was given by Suslick and colleagues when they showed that a digital scanner has enough sensitivity to detect the colour changes in chemical dyes due to the adsorption of volatile compounds. ... 

Imaging plates are exposed similar to radiographic films. They are read out by a LASER-scanner to a digital image without any developing process. After optical erasing of the virtual picture the same IP can be used cyclic up to more than 1000 times. The life time is limited by the mechanical stability of the IP s. An IP consists of a flexible polymer carrier which is coated with the sensitive layer. This layer is covered with a thin transparent protective foil. 

P ) The system BAS 2000 (bio-imaging analyser) from Fuji Film. The system included flexible IP s, in a 20 X 40 cm and 20 X 25 cm format (type BAS ni) and an IP without proteetive layer (BAS-TR2040). With the system s laser scanner (flat bed) one can read these IP s with a resolution of 100 pm or 200 pm and a digital dynamie of 8 or 10 bits. The system is not on the market anymore. 

The specific advantage of this technique is its higher sensitivity than classical film radiography and the potential for automated image processing due to the digital read-out of the IP s. Former investigations have shown / / that the available IP s achieve the same contrast like NDT films with an IP type and scanner dependent unsharpness. 

The data are transmitted from the front end processor to the computer in digital form over an ethemet link. The data consist of ultrasonic data, either raw RF A-scans or data processed by the digital signal processor in the PSP-4. In addition to the ultrasonic data, scanner coordinates are transmitted over the ethemet link. 

Keyboards are the most widely used input devices, but optical scanners and digital pads (for computer-aided design) are some additional input devices. Input may also be from files stored on a disk or tape. 

The distance of each reflection from the center of the pattern is a function of the fiber-to-film distance, as well as the unit-cell dimensions. Therefore, by measuring the positions of the reflections, it is possible to determine the unit-cell dimensions and, subsequently, index (or assign Miller indices to) all the reflections. Their intensities are measured with a microdensitometer or digitized with a scanner and then processed.8-10 After applying appropriate geometrical corrections for Lorentz and polarization effects, the observed structure amplitudes are computed. This experimental X-ray data set is crucial for the determination and refinement of molecular and packing models, and also for the adjudication of alternatives. 

The use of conventional photographic systems for data acquisition, printing and archiving results of planar chromatography [401] has now largely been superseded by video documentation systems. A sample method for documentation of TLC plates has been described by a combination of computer, scanner, and digital colour thermal printer resulting in a very... 

Security systems are available featuring magnetic badges, personnel identification numbers, passphrases, or even digital or retinal scanners that unlock those specific areas to which the individual employee has been granted access. Since these systems are computer controlled, the access authorization for any individual can be conveniently and quickly adjusted as circumstances warrant. Logging of traffic in the various areas can be accomplished automatically. It should be understood that computerized systems are susceptible to intrusion and may therefore lack the positive control of a well organized and monitored system of secure keys or combinations. 

AS E flying spot system, first digital bagjage scanner... 

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