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Screening
Screening may refer to: * Screening cultures, a type a medical test that is done to find an infection * Screening (economics), a strategy of combating adverse selection (includes sorting resumes to select employees) * Screening (environmental), a set of analytical techniques used to monitor levels of potentially hazardous organic compounds in the environment * Screening (medicine), a strategy used in a population to identify an unrecognised disease in individuals without signs or symptoms * Screening (printing), a process that represents lighter shades as tiny dots, rather than solid areas, of ink by passing ink through * Screening (process stage), process stage when cleaning paper pulp * Screening (tactical), one military unit providing cover for another in terms of both physical presence and firepower * Baggage screening, a security measure * Call screening, the process of evaluating the characteristics of a telephone call before deciding how or whether to answer it * Electric- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Screening (medicine)
Screening, in medicine, is a strategy used to look for as-yet-unrecognised conditions or risk markers. This testing can be applied to individuals or to a whole population. The people tested may not exhibit any signs or symptoms of a disease, or they might exhibit only one or two symptoms, which by themselves do not indicate a definitive diagnosis. Screening interventions are designed to identify conditions which could at some future point turn into disease, thus enabling earlier intervention and management in the hope to reduce mortality and suffering from a disease. Although screening may lead to an earlier diagnosis, not all screening tests have been shown to benefit the person being screened; overdiagnosis, misdiagnosis, and creating a false sense of security are some potential adverse effects of screening. Additionally, some screening tests can be inappropriately overused. For these reasons, a test used in a screening program, especially for a disease with low incidence, must ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-throughput Screening
High-throughput screening (HTS) is a method for scientific experimentation especially used in drug discovery and relevant to the fields of biology, materials science and chemistry. Using robotics, data processing/control software, liquid handling devices, and sensitive detectors, high-throughput screening allows a researcher to quickly conduct millions of chemical, genetic, or pharmacological tests. Through this process one can quickly recognize active compounds, antibodies, or genes that modulate a particular biomolecular pathway. The results of these experiments provide starting points for drug design and for understanding the noninteraction or role of a particular location. Assay plate preparation The key labware or testing vessel of HTS is the microtiter plate, which is a small container, usually disposable and made of plastic, that features a grid of small, open divots called ''wells''. In general, microplates for HTS have either 96, 192, 384, 1536, 3456 or 6144 wells. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Screening Cultures
Screening may refer to: * Screening cultures, a type a medical test that is done to find an infection * Screening (economics), a strategy of combating adverse selection (includes sorting resumes to select employees) * Screening (environmental), a set of analytical techniques used to monitor levels of potentially hazardous organic compounds in the environment * Screening (medicine), a strategy used in a population to identify an unrecognised disease in individuals without signs or symptoms * Screening (printing), a process that represents lighter shades as tiny dots, rather than solid areas, of ink by passing ink through * Screening (process stage), process stage when cleaning paper pulp * Screening (tactical), one military unit providing cover for another in terms of both physical presence and firepower * Baggage screening, a security measure * Call screening, the process of evaluating the characteristics of a telephone call before deciding how or whether to answer it * Electric-f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Screening (economics)
Screening in economics refers to a strategy of combating adverse selection – one of the potential decision-making complications in cases of asymmetric information – by the agent(s) with less information. For the purposes of screening, asymmetric information cases assume two economic agents, with agents attempting to engage in some sort of transaction. There often exists a long-term relationship between the two agents, though that qualifier is not necessary. Fundamentally, the strategy involved with screening comprises the “screener” (the agent with less information) attempting to gain further insight or knowledge into private information that the other economic agent possesses which is initially unknown to the screener before the transaction takes place. In gathering such information, the information asymmetry between the two agents is reduced, meaning that the screening agent can then make more informed decisions when partaking in the transaction. Industries that utilise s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Screening (1997 Film)
Screening may refer to: * Screening cultures, a type a medical test that is done to find an infection * Screening (economics), a strategy of combating adverse selection (includes sorting resumes to select employees) * Screening (environmental), a set of analytical techniques used to monitor levels of potentially hazardous organic compounds in the environment * Screening (medicine), a strategy used in a population to identify an unrecognised disease in individuals without signs or symptoms * Screening (printing), a process that represents lighter shades as tiny dots, rather than solid areas, of ink by passing ink through * Screening (process stage), process stage when cleaning paper pulp * Screening (tactical), one military unit providing cover for another in terms of both physical presence and firepower * Baggage screening, a security measure * Call screening, the process of evaluating the characteristics of a telephone call before deciding how or whether to answer it * Electric-f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanical Screening
Mechanical screening, often just called screening, is the practice of taking Granule (geology), granulated or crushed ore material and separating it into multiple Ore grade, grades by particle size. This practice occurs in a variety of industries such as mining and mineral processing, agriculture, pharmaceutical, food, plastics, and recycling. A method of separating solid particles according to size alone is called screening. General categories Screening falls under two general categories: dry screening, and wet screening. From these categories, screening separates a flow of material into grades, these grades are then either further processed to an intermediary product or a finished product. Additionally, the machines can be categorized into a moving screen and static screen machines, as well as by whether the screens are horizontal or inclined. Applications The mining and mineral processing industry uses screening for a variety of processing applications. For example, after mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baggage Screening
Airport security includes the techniques and methods used in an attempt to protect passengers, staff, aircraft, and airport property from malicious harm, crime, terrorism, and other threats. Aviation security is a combination of measures and human and material resources in order to safeguard civil aviation against acts of unlawful interference. Unlawful interference could be acts of terrorism, sabotage, threat to life and property, communication of false threat, bombing, etc. Description Large numbers of people pass through airports every day. This presents potential targets for terrorism and other forms of crime because of the number of people located in one place. Similarly, the high concentration of people on large airliners increases the potentially high death rate with attacks on aircraft, and the ability to use a hijacked airplane as a lethal weapon may provide an alluring target for terrorism (such as during the September 11 attacks). Airport security attempts to prevent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Screening (environmental)
Within the environmental sciences, screening broadly refers to a set of analytical techniques used to monitor levels of potentially hazardous organic compounds in the environment, particularly in tandem with mass spectrometry techniques. Such screening techniques are typically classified as either targeted, where compounds of interest are chosen before the analysis begins, or non-targeted, where compounds of interest are chosen at a later stage of the analysis. These two techniques can be organized into at least three approaches: target screening, using reference standards that are analogous to the target compound; suspect screening, which uses a library of cataloged data such as exact mass, isotope patterns, and chromatographic retention times in lieu of reference standards; and non-target screening, using no pre-existing knowledge for comparison before analysis. As such, target screening is most useful when monitoring the presence of specific organic compounds—particularly for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Screening (tactical)
Screening is a defensive tactic in which a picket or outposts are used to hide the nature and strength of a military force; provide early warning of enemy approach; impede and harass the enemy main body with indirect fire; and report on the activity of the enemy main body. Screening forces may conduct patrols, establish outposts, and help destroy enemy reconnaissance units. A screening mission seeks to deny enemy reconnaissance units close-in observation of the main body. An effective screen can conceal where an army begins and ends, making it hard to flank. In modern warfare, screening is performed by armoured cars and light tanks. Screening force Screening is often done by reconnaissance units such as cavalry, which operate within range of supporting artillery. In contrast to a guard force, a screening force may consist of a scout platoon rather than a task force or squadron; and its mission is less ambitious, focusing on early warning to the main body rather than preventin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Screen (other)
Screen or Screens may refer to: Arts * Screen printing (also called ''silkscreening''), a method of printing * Big screen, a nickname associated with the motion picture industry * Split screen (filmmaking), a film composition paradigm in which multiple distinct film sequences are shown simultaneously and next to each other * Stochastic screening and Halftone photographic screening, methods of simulating grays with one-color printing Filtration and selection processes * Screening (economics), the process of identifying or selecting members of a population based on one or more selection criteria * Screening (biology), idem, on a scientific basis, ** of which a genetic screen is a procedure to identify a particular kind of phenotype ** the Irwin screen is a toxicological procedure * Sieve, a mesh used to separate fine particles from coarse ones * Mechanical screening, a unit operation in material handling which separates product into multiple grades by particle size Media and music ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Screening (process Stage)
The kraft process (also known as kraft pulping or sulfate process) is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibres, the main component of paper. The kraft process involves treatment of wood chips with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na2S), known as white liquor, that breaks the bonds that link lignin, hemicellulose, and cellulose. The technology entails several steps, both mechanical and chemical. It is the dominant method for producing paper. In some situations, the process has been controversial because kraft plants can release odorous products and in some situations produce substantial liquid wastes. The process name is derived from German word ''Kraft'', meaning "strength" in this context, due to the strength of the kraft paper produced using this process. History A precursor of the Kraft process was used during the Napoleonic Wars in England. The kraft process (so called because of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smoke Screening
A smoke screen is smoke released to mask the movement or location of military units such as infantry, tanks, aircraft, or ships. Smoke screens are commonly deployed either by a canister (such as a grenade) or generated by a vehicle (such as a tank or a warship). Whereas smoke screens were originally used to hide movement from enemies' line of sight, modern technology means that they are now also available in new forms; they can screen in the infrared as well as visible spectrum of light to prevent detection by infrared sensors or viewers, and they are also available for vehicles in a super-dense form used to block laser beams of enemy target designators or range finders. Technology Smoke grenades These are canister-type grenades used as a ground-to-ground or ground-to-air signalling device. The body consists of a steel sheet metal cylinder with a few emission holes on the top and/or bottom to allow smoke release when the smoke composition inside the grenade is ignited. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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