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Isochore maps in geology are also referred to as True Vertical Thickness (TVT) maps. [2] [3] Thus, an isochore and isopach map are the same only when both the top and bottom surfaces of the layer shown are horizontal. When the layer shown is inclined, as is usually the case, the thicknesses displayed in an isochore map of the layer will be ...
Isochore may refer to: Isochore (genetics) Isochore map, in geology; Isochore, in physics a line representing the variation of pressure with temperature when the volume of the substance operated on is constant. iso-choric process, in thermodynamics
In genetics, an isochore is a large region of genomic DNA (greater than 300 kilobases) with a high degree of uniformity in GC content; that is, guanine (G) and cytosine (C) bases. The distribution of bases within a genome is non-random: different regions of the genome have different amounts of G-C base pairs, such that regions can be classified ...
An isochrone map in geography and urban planning is a map that depicts the area accessible from a point within a certain time threshold. [1] An isochrone (iso = equal, chrone = time) is defined as "a line drawn on a map connecting points at which something occurs or arrives at the same time". [ 2 ]
Improvements in agricultural productivity and technology are expected to be able to meet anticipated increased demand for resources, making a global human overpopulation scenario unlikely. [208] [209] [210] For any given production set, there is not a set amount of labor input (a "lump of labor") to produce that output.
The isochore model was proposed by Bernardi and colleagues to explain the observed non-uniformity of genomic fragments in the genome. [2] However, recent sequencing of complete genomic data refuted the isochoric model. Its main predictions were:
In the case of homotopy, the continuous deformation from one map to the other is of the essence, and it is also less restrictive, since none of the maps involved need to be one-to-one or onto. Homotopy does lead to a relation on spaces: homotopy equivalence. There is a name for the kind of deformation involved in visualizing a homeomorphism.
A 3D surface map of Mt. St. Helens with a 2D contour map above for comparison. In mathematics, geology, and cartography, a surface map is a 2D perspective representation of a 3-dimensional surface. [1] Surface maps usually represent real-world entities such as landforms or the surfaces of objects.