disphotic zone definition
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Oceanic zone The mesopelagic (disphotic) zone, where only small amounts of light penetrate, lies below the epipelagic zone. This zone is often referred to at the Twilight Zone due to its scarce amount of light. Temperatures in the mesopelagic zone range from 5 to 4 °C (41 to 39 °F).he oceanic zone has a wide array of undersea terrain, including crevices that are often deeper than Mount Everest is tall, as well as deep-sea volcanoes and ocean basins. While it is often difficult for life to sustain itself in this type of environment, some species do thrive in the oceanic zone (Col).
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- Due to a mechanical expansion in the peripapillary sclera, the optic disc in eyes with pathologic myopia is surrounded by a concentric area of depigmentation, the so-called myopic conus. The myopic crescent usually appears as a white, sharply defined area where the inner surface of the sclera is seen distinctly (Fig. 68.4).
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INCOME (C) remuneration received for services performed in a sheltered workshop or work activities center; and. (D) any royalty earned by an individual in connection with any publication of the work of the individual, and that portion of any honorarium which is received for services rendered; and.
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Littoral zone In oceanography and marine biology[edit] The littoral zone of an ocean is the area close to the shore and extending out to the edge of the continental shelf. The intertidal zone of a beach is also part of the littoral zone. Estuaries are also in the littoral zone.
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buffer zone buffer zone. 1. A defined area controlled by a peace operations force from which disputing or belligerent forces have been excluded. A buffer zone is formed to create an area of separation between disputing or belligerent forces and reduce the risk of renewed conflict.Also called area of separation in some United Nations operations. Also called BZ. See also area of separation; line of demarcation; peace operations.2. buffer zone is formed to create an area of separation between disputing or belligerent forces and reduce the risk of renewed conflict. Also called area of separation in some United Nations operations. Also called BZ. See also area of separation; line of demarcation; peace operations. 2.
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Zone of proximal development · Pastoral. The zone of proximal development (зона ближайшего развития), often abbreviated ZPD, is the difference between what a learner can do without help and what he or she can do with help. It is a concept developed by Soviet psychologist and social constructivist Lev Vygotsky (1896 – 1934). Vygotsky stated that a child follows an adult's example and gradually develops the ability to do certain tasks without help. Vygotsky's often-quoted definition of zone of proximal development presents it as.
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Diflunisal Diflunisal is a salicylic acid derivative with analgesic and anti-inflammatory activity. It was developed by Merck Sharp & Dohme in 1971 after showing promise in a research project studying more potent chemical analogs of aspirin.ffectiveness of diflunisal is similar to other NSAIDs, but the duration of action is twelve hours or more. This means fewer doses per day are required for chronic administration. In acute use, it is popular in dentistry when a single dose after oral surgery can maintain analgesia until the patient is asleep that night.
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- What is APHOTIC ZONE? part of the ocean where there is very little or no light, generally under certain depth approximately under 1500 meters. Under this depth only light source is bioluminescence.
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Subtropics The subtropics and tropics. Areas of the world with subtropical climates. The subtropics are geographic and climate zones located roughly between the tropics at latitude 23.5° (the Tropic of Cancer and Tropic of Capricorn) and temperate zones (normally referring to latitudes 35–66.5°) north and south of the Equator.
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Zone of proximal development The zone of proximal development, often abbreviated as ZPD, is the difference between what a learner can do without help and what he or she can do with help.It is a concept introduced, yet not fully developed, by Soviet psychologist Lev Vygotsky (1896–1934) during the last ten years of his life.ince Vygotsky's original conception, the definition for the zone of proximal development has been expanded and modified. The zone of proximal development is an area of learning that occurs when a person is assisted by a teacher or peer with a skill set higher than that of the subject.
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transitional zone transitional zone n. 1  The region of the lens of the eye where cells from the anterior epithelial capsule become transformed into the fibers that compose the lens substance. 2  The portion of a scleral contact lens that joins the corneal and scleral sections.
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- The Spray Zone is the uppermost area where the terrestrial ecosystem meets the marine world. It is a transitional area and varies in height and width from area to area. In the photo above, the pine forest meets the rock with some sparsely growing terrestrial plants. The gray rock face extends down toward the water.
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transition zone ciliary zone the outer of the two regions into which the anterior surface of the iris is divided by the collarette. comfort zone an environmental temperature between 13 and 21°C (55 and 70°F) with a humidity of 30 to 55 per cent.
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What is the photic zone? Answered by The Community. Making the world better, one answer at a time. The photic zone (also known as the euphotic zone) is the name for the depth of water, be it in lake, sea or ocean, which is exposed to sufficient sunlight to allow photosynthesis to take place. It extends from the Atmosphere-ocean interface downward to a depth where the light intensity is 1% of that at the surface.
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Subic Subic Bay Freeport Zone (SBFZ) is 110 kilometers north of Manila, facing the South China Sea and is surrounded by Olongapo City and the towns of Subic and Morong. It is Northwest of the Bataan Peninsula and Southwest of the Zambales Province.
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Hot zone (environment) For other uses, see Hot zone (disambiguation) . Hot zone, also written as hot-zone or hotzone, refers to an area that is considered to be dangerous. It generally entails special equipment to protect occupants, because there is a high risk of infection.
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Littoral zone The littoral zone is the part of a sea, lake or river that is close to the shore. In coastal environments the littoral zone extends from the high water mark, which is rarely inundated, to shoreline areas that are permanently submerged.
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Aphotic zone The depth of the aphotic zone can be greatly affected by such things as turbidity and the season of the year. The aphotic zone underlies the photic zone, which is that portion of a lake or ocean directly affected by sunlight. Depending on how aphotic zone is defined, the aphotic zone of the ocean begins between depths of roughly 200 m (660 ft) to 1,000 m (3,300 ft), and extends to the ocean floor. Temperatures can range from roughly 0 °C (32 °F) to 6 °C (43 °F).
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Earthquake Glossary shadow zone. The shadow zone is the area of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves. The shadow zone results from S waves being stopped entirely by the liquid core and P waves being bent (refracted) by the liquid core.rom the lack of S waves and a great slowing of the P wave velocity (by about 40%) it was deduced that the outer core is made of liquid. The shadow zone also defined the diameter of the core.
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Genetics in OphthalmologyThe Genetics of Pigment Dispersion Syndrome and Pigmentary Glaucoma Pigment dispersion syndrome ( PDS ) is characterized by disruption of the iris pigment epithelium by iridozonular friction and deposition of the released pigment throughout the anterior segment , especially behind the lens at the insertion of the lens zonules into the posterior lens capsule , producing the Zentmayer ring or Scheie stripe.117 The ...
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- The fundamental biostratigraphic unit is the biozone. The range zone is defined by the geologic range (the total time of existence) of a particular fossil group or species. For example the range zone of the fossil graptolites is Ordivician to Devonian. A concurrent range zone is the overlapping range zones of two or more fossils with different geologic ranges.
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- The Spray Zone is the uppermost area where the terrestrial ecosystem meets the marine world. It is a transitional area and varies in height and width from area to area.
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zone Definition of zone for Students. 1  1 : a region or area set off or characterized as different from surrounding or neighboring parts The United States is located in one of earth's temperate zones. 2  2 : one of the sections of an area created for or serving a particular use or purpose a town's business zone.
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Dispatches from the Deep: Light and Dark in the Sea In the aphotic zone; all that’s left of sunlight is a dim, dark, blue-green light, too weak to allow photosynthesis to occur. There is food to be had, though; detritus, bits of decaying plants, and animal waste falls from above to feed the organisms in the aphotic zone. After the aphotic zone, there’s complete darkness. From 1,000 meters below the surface, all the way to the sea floor, no sunlight penetrates the darkness; and because photosynthesis can’t take place, there are no plants, either.
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- Definition of 'dew-point spread'. dew-point spread in American English (ˈduˌpɔɪnt ; do̅oˈpointˌ; ˈdjuˌpɔɪnt ; dyo̅oˈpointˌ) the degrees of difference between the air temperature and the dew point. also called dew-point deficit or dew-point depression. Useful links.
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Zone of proximal development The zone of proximal development, often abbreviated as ZPD, is the difference between what a learner can do without help and what he or she can do with help.It is a concept introduced, yet not fully developed, by Soviet psychologist Lev Vygotsky (1896–1934) during the last ten years of his life.Vygotsky stated that a child follows an adult's example and gradually develops the ability to do certain tasks without help.ince Vygotsky's original conception, the definition for the zone of proximal development has been expanded and modified. The zone of proximal development is an area of learning that occurs when a person is assisted by a teacher or peer with a skill set higher than that of the subject.