By using magnetic resonance imaging (MRI) to study the brains of infants who have older siblings with autism, scientists were able to correctly identify 80 percent of the babies who would be subsequently diagnosed with autism ...
Feb 15, 2017
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(Medical Xpress)—A pair of researchers with Universidade Federal do Rio de Janeiro has found that the degree of folding of mammalian brains follows a simple mathematical relationship. In their paper published in the journal ...
The number of immune cells in and around kidney tumors, the amount of dead cancer tissue, and mutations to a tumor suppressor gene called PBRM1 form a biomarker signature that can predict—before treatment begins—how well ...
Apr 6, 2023
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The size of our primary visual cortex and the amount of brain tissue we have dedicated to processing visual information at certain locations of visual space can predict how well we can see, a team of neuroscientists has discovered. ...
Jun 13, 2022
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Scientists at the Texas A&M University College of Medicine have made a breakthrough discovery about the development of the brain. This new information contributes to our understanding of how the part of the brain that makes ...
Jun 3, 2022
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Masks that protect against SARS-CoV-2 virus can feel like a nuisance, especially while exercising.
Mar 9, 2022
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An international study reveals how future climate change could affect malaria transmission in Africa over the next century.
Aug 28, 2020
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When we say someone has a quick mind, it may be in part thanks to our expanded cerebellum that distinguishes human brains from those of macaque monkeys, for example.
Jul 31, 2020
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Virus DNA left on a hospital bed rail was found in nearly half of all sites sampled across a ward within 10 hours and persisted for at least five days, according to a new study by UCL and Great Ormond Street Hospital (GOSH).
Jun 8, 2020
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A major international collaboration has produced the first genetic map of the cerebral cortex, identifying more than 300 genetic variants that influence the structure of the key brain region.
Mar 20, 2020
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Surface area is the measure of how much exposed area a solid object has, expressed in square units. Mathematical description of the surface area is considerably more involved then the definition of arc length of a curve. For polyhedra (objects with flat polygonal faces) the surface area is the sum of the areas of its faces. Smooth surfaces, such as a sphere, are assigned surface area using their representation as parametric surfaces. This definition of the surface area is based on methods of infinitesimal calculus and involves partial derivatives and double integration.
General definition of surface area was sought by Henri Lebesgue and Hermann Minkowski at the turn of the twentieth century. Their work led to the development of geometric measure theory which studies various notions of surface area for irregular objects of any dimension. An important example is the Minkowski content of a surface.
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