Information about Occlusion
Occlusion is a term indicating that the state of something, which is normally open, is now totally closed.
Shading refers to depth in 3D models or illustrations by varying levels of darkness.
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An occultation
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- In medicine, the term is often used to refer to blood vessels, arteries or veins which have become totally blocked to any blood flow. For issues of artery occlusion, see stenosis, atheroma, and coronary catheterization.
- In dentistry, occlusion refers to the manner in which the teeth from upper and lower arches come together when the mouth is closed.
- In psychology, specifically memory research, occlusion is the phenomenon of items associated to the same cue as the target blocking the successful retrieval of that target, through strength dependent response competition. The tip-of-the-tongue phenomenon is an example of occlusion.
- In meteorology, the term refers to the complex frontal structure formed when a cold front overtakes a warm front. It is associated with widespread, steady rainfall in advance of the occluded front. In addition to extratropical cyclones on the synoptic scale, occlusions also occur on the mesoscale, as when a rear flank downdraft occludes in a supercell thunderstorm.
- In computer graphics, the term is used to describe the manner in which an object closer to the viewport masks (or occludes) an object further away from the viewport. In the graphics pipeline one implements a form of occlusion culling to remove hidden surfaces before shading and rasterizing take place.
- In audiology, occlusion refers to the phenomenon that when persons with normal hearing close off the opening into the ear canal, the loudness of low pitched sounds (presented by bone conduction) increases.
- In computer gaming audio engines, the term describes modification of the qualities of a sound that pases through or around an object so that the player experiences a greater sense of realism. For example, a sound that comes from behind a door realistically sounds as if it passed through a door.
See also
Medicine is the science and "" of maintaining and/or restoring human health through the study, diagnosis, and treatment of patients. The term is derived from the Latin ars medicina meaning the art of healing.
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The blood vessels are part of the cardiovascular system and function to transport blood throughout the body. The most important types, arteries and veins, carry blood away from or towards the heart, respectively.
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Arteries are muscular blood vessels that carry blood away from the heart.[1] All arteries, with the exception of the pulmonary and umbilical arteries, carry oxygenated blood.
The circulatory system is extremely important for sustaining life.
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The circulatory system is extremely important for sustaining life.
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vein is a blood vessel that carries blood toward the heart. The majority of veins in the body carry low-oxygen blood from the tissues back to the heart; the exceptions being the pulmonary and umbilical veins which both carry oxygenated blood.
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Blood flow is the flow of blood in the cardiovascular system. The discovery that blood flows is attributed to William Harvey.
Mathematically, blood flow is described by Darcy's law (which can be viewed as the fluid equivalent of Ohm's law) and approximately
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Mathematically, blood flow is described by Darcy's law (which can be viewed as the fluid equivalent of Ohm's law) and approximately
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A stenosis is an abnormal narrowing in a blood vessel or other tubular organ or structure. It is also sometimes called a "stricture" (as in urethral stricture).
Stenoses of the vascular type are often associated with a noise (bruit) resulting from turbulent flow over the
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Stenoses of the vascular type are often associated with a noise (bruit) resulting from turbulent flow over the
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Atheroma
Classification & external resources
ICD-10 I 70.9
ICD-9 440
DiseasesDB 1039
MeSH C14.907.137.126.307 In pathology, an atheroma
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Classification & external resources
ICD-10 I 70.9
ICD-9 440
DiseasesDB 1039
MeSH C14.907.137.126.307 In pathology, an atheroma
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coronary catheterization is a minimally invasive procedure to access the coronary circulation and blood filled chambers of the heart using a catheter. It is performed for both diagnostic and interventional (treatment) purposes.
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Academy of Comprehensive Esthetics http://www.ACEsthetics.com American Academy of Implant Dentistry Advancing the standard of care for comprehensive implant dentistry since 1951. American Dental Education Association http://www.adea.
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Occlusion, in a dental context, means simply the contact between teeth. More technically, it is the relationship between the maxillary (upper) and mandibular (lower) teeth when they approach each other, as occurs during chewing or at rest.
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Psychology (from Greek: Literally "talk about the soul" (from logos)) is both an academic and applied discipline involving the scientific study of mental processes and behavior.
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In psychology, memory is an organism's ability to store, retain, and subsequently retrieve information. Traditional studies of memory began in the realms of philosophy, including techniques of artificially enhancing the memory.
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Meteorology (from Greek: μετέωρον, meteoron, "high in the sky"; and λόγος, logos, "knowledge") is the interdisciplinary scientific study of the atmosphere that focuses on weather processes and
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weather front is a boundary between two masses of air of different densities, and is the principal cause of significant weather. In surface weather analyses, fronts are depicted using various colored lines and symbols.
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cold front is defined as the leading edge of a cooler and drier mass of air.[1] The air with greater density wedges under the less dense warmer air, lifting it, which can cause the formation a narrow line of showers and thunderstorms when enough moisture is present.
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A warm front is defined as the leading edge of a mass of warm air. Warm fronts move more slowly than the cold front which usually follows due to the fact that cold air is more dense, and harder to remove from the earth's surface.
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An occluded front is formed during the process of cyclogenesis when a cold front overtakes a warm front. The two fronts curve up naturally into the point of occlusion, also known as a triple point.
There are two types of occlusion, the warm and the cold.
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There are two types of occlusion, the warm and the cold.
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Extratropical cyclones, sometimes called mid-latitude cyclones, are a group of cyclones defined as synoptic scale low pressure weather systems that occur in the middle latitudes of the Earth having neither tropical nor polar characteristics, and are connected with fronts and
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The synoptic scale in meteorology (also known as large scale or cyclonic scale) is a horizontal length scale of the order of 1000 kilometres (about 620 miles) or more [1]. This corresponds to a horizontal scale typical of mid-latitude depressions.
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Mesoscale Meteorology is the study of weather systems smaller than synoptic scale systems but larger than microscale and storm-scale cumulus systems. Horizontal dimensions generally range from around 5 miles to several hundred miles.
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rear flank downdraft or RFD is a region of dry air wrapping around the back of a mesocyclone in a supercell thunderstorm. These areas of decending air are thought to be essential in the production of many supercellular tornadoes.
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supercell is a severe thunderstorm with a deep, persistently rotating updraft (a mesocyclone).[1] Supercell thunderstorms are the largest, most severe class of thunderstorms.
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Computer graphics is a sub-field of computer science and is concerned with digitally synthesizing and manipulating visual content. Although the term often refers to three-dimensional computer graphics, it also encompasses two-dimensional graphics and image processing.
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graphics pipeline or rendering pipeline most commonly refer to the current state of the art method of rasterization-based rendering as supported by commodity graphics hardware [1].
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For other uses, see Shade (disambiguation).
Shading refers to depth in 3D models or illustrations by varying levels of darkness.
Drawing
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raster graphics image, digital image, or bitmap, is a data structure representing a generally rectangular grid of pixels, or points of color, viewable via a computer monitor, paper, or other display medium.
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Audiology (from Latin: audire, "to hear"; and from Greek: and λόγος, logos, "knowledge") is the branch of Science that studies hearing, balance and related disorders.
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An occlusive dressing is an air- and water-tight trauma dressing used in first aid. These dressings are generally made with a waxy coating so as to provide a total seal, and as a result do not have the absorbent properties of gauze pads.
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stop, plosive, or occlusive is a consonant sound produced by stopping the airflow in the vocal tract. The terms plosive and stop are usually used interchangeably, but they are not perfect synonyms.
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- In twelver Shi'ism the occultation is the name given to the disappearance of the Twelfth Imam. See also occult (disambiguation).
An occultation
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