Store information

FiaaHy, the use of photoreversible change of the circular dichroism for optical data storage is of iaterest. This technique offers an advantage over photochromic materials ia that the data can be read ia a way that does not damage the stored information. These chirooptic data storage devices have been demonstrated with the example of chiral peptides with azobenzene side groups (155). 

Optical functions are important both to transmit information through fiber optic cables and to store information on optical disks. An optical fiber... 

Stores information on community emergency procedures and plans ... 

Provides criteria for evaluation of training programs and stores information on training completed per regulatory requirements. 

The filing provisions you have made should enable your records to be readily retrievable however, you need to maintain your files if the stored information is to be of any use. In practice, records will collect at the place they are created and unless promptly removed to secure files may be mislaid, lost, or inadvertently destroyed. Once complete, quality records should not be changed. If they are subsequently found to be inaccurate, new records should be created. Alterations to records should be prohibited as they bring into doubt the validity of any certification or authentication as no one will know whether the alteration was made before or after the records were authenticated. In the event that alterations are unavoidable due to time or economic reasons, errors should be struck through in order that the original wording can still be read, and the new data added and endorsed by the certifying authority. 

Push-down Automata push-down automata generalize finite automata by introducing an internal memory. Just as for finite automata, push-down automata have a finite input alphabet and a finite set of intermediate states, a subset of which constitutes the set of its output (or accepting) states. The difference is that push-down automata have an additional stack-space, consisting of some or all of the symbols of the machine s alphabet (along with perhaps some additional symbols to be used as internal markers) which they can use to store information for later use. We can therefore generalize our definition for finite automata (equation 6.4) to ... 

What Crick called the "central dogma of molecular genetics" says that the function of DNA is to store information and pass it on to RNA. The function of... 

FIGURE 15.29 These micrographs show that a block < opolymcr on its own > rystallizes in a chaotic pattern a) nanoscale techniques wcr used to produce the self-assi mbled parallel array o the same copolymer in (b) Such n gular arrays could be used to make ultra-high density memory chips to store information in miniature computers... 

Liquid crystalline solutions as such have not yet found any commercial uses, but highly orientated liquid crystal polymer films are used to store information. The liquid crystal melt is held between two conductive glass plates and the side chains are oriented by an electric field to produce a transparent film. The electric field is turned off and the information inscribed on to the film using a laser. The laser has the effect of heating selected areas of the film above the nematic-isotropic transition temperature. These areas thus become isotropic and scatter light when the film is viewed. Such images remain stable below the glass transition temperature of the polymer. 

According to Vosniadou (2002), generative questions are those that cannot be answered on the basis of stored information but require the genuine solution of a new problem. Therefore, in order to answer a generative question, the subjeet must ereate a mental representation or a mental model of the entity and explore it in order to derive from it a relevant answer (Vosniadou, 2002, p. 358). 

Magnetic hard discs are used in computers to store information in the form of magnetic bits on a ferromagnetic alloy film. To protect the magnetic medium, a hard carbon coating about... 

The Patent Activity Data Base was developed to provide better tracking and follow-up of this critical activity. The course of a patent disclosure from the time it is first disclosed until a patent is issued or it is abandoned can be a complicated process stretched over a time period of several years. Monitoring the status of the patent disclosures of a large research organization over this period of time is a formidable task. The Patent Disclosure Tracking Data Base was developed to centralize the stored information on patent disclosures in a searchable and retrievable form. This data base consists of two data files illustrated in Table I. The first is the... 

The information stored in the specimen database is sufficient to identify the particular specimen and the material from which it is made. Other parameters provide information on the orientation of the specimen and on its unit cell parameters. These latter parameters are used by the data collection tasks and the crystal geometry calculation function to determine diffraction angles, the angles between crystal planes, etc. The user can store information on several specimens in the specimen database, thus permitting him to easily remount and rerun a specimen after looking at the collected data. 

Genes stored information about the internal system and allowed cell reproduction. Probably all organisms belonged to one chemotype swapping genes before more restricted chemotypes evolved. 

To maintain organisation in mobile animals the brain evolved from nerve cell packages. The brain stored information about the environment so that increased interaction between environment and organisms evolved again. 

United Nations APELL (Awareness and Preparedness for Emergencies at the Local Level) [15] chemical accident database (storing information on about 300 major chemical accidents between 1970 and 1998) shows that ... 

Once you realize that attributes do not directly represent stored information, the unconventional concept of a parameterized attribute is a natural extension. A parameterized attribute is one that has a defined value for each of many different possible values of its parameter(s). Like attributes generally, it is best thought of as a query, or read-only, function that has been hypothesized for some purpose it need not be directly implemented. 

Nucleic acids are the molecules in our cells that direct and store information for reproduction and cellular growth. There are two types of nucleic acids ribonucleic acid (RNA) and deoxyribonucleic acid (DNA). Both of these nucleic acids are unbranched organic polymers composed of monomer units called nucleotides. These nucleotides are composed of a sugar molecule, a nitrogen base, and phosphoric acid. A single DNA molecule may contain several million of these nucleotides, while the smaller RNA molecules may contain several thousand. 

A natural extension of analytical automation is some means of data processing all the results that are generated. This usually takes the form of a central computer which accepts information from different analysers for presentation in a useful manner. The identification of a sample and the tests performed are typed in using a keyboard and the computer collates all the data on each sample. As well as collecting information, computing and statistically assessing results, an important facility of the computer lies in its ability to store information for future recall via a visual display unit. 

The protein sequence databases are the most comprehensive source of information on proteins. The goal of this chapter is to describe the different protein sequence databases available to researchers. It is necessary to distinguish between universal databases that cover proteins from all species and specialized data collections that store information about specific families or groups of proteins, or about the proteins of a specific organism. Two categories of universal protein sequence databases can be discerned simple archives of sequence data and annotated databases in which additional information has been added to the sequence record. The next section describes the Protein Information Resource (PIR), the oldest protein sequence database SWISS-PROT, an annotated universal sequence database and TrEMBL, the supplement of... 

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