anisotropic en
81Isotropic quadratic form — In mathematics, a quadratic form over a field F is said to be isotropic if there is a non zero vector on which it evaluates to zero. Otherwise the quadratic form is anisotropic. More precisely, if q is a quadratic form on a vector space V over F …
82Radiative transfer equation and diffusion theory for photon transport in biological tissue — Photon transport in biological tissue can be equivalently modeled numerically with Monte Carlo simulations or analytically by the radiative transfer equation (RTE). However, the RTE is difficult to solve without introducing approximations. A… …
83Hill yield criteria — Rodney Hill has developed several yield criteria for anisotropic plastic deformations. The earliest version was a straightforward extension of the von Mises yield criterion and had a quadratic form. This model was later generalized by allowing… …
84Native elements — ▪ Table Native elements name colour lustre Mohs hardness specific gravity habit or form allemontite tin white; reddish gray metallic 3–4 5.8–6.2 kidneylike masses amalgam gold amalgam yellowish metallic 15.5 lumps or grains moschellandsbergite… …
85Osipkov–Merritt model — Osipkov Merritt distribution functions, derived from galaxy models obeying Jaffe s law in the density. The isotropic model, f = f(E), is plotted with the heavy line. Osipkov–Merritt models (named for Leonid Osipkov and David Merritt) are… …
86Noise reduction — For sound proofing, see soundproofing. For scientific aspects of noise reduction of machinery and products, see noise control. Noise reduction is the process of removing noise from a signal. All recording devices, both analogue or digital, have… …
87Alnico — is an acronymcite book title = The Insomniac s Dictionary edition = last = Hellweg first = Paul coauthors = year = 1986 publisher = Facts On File Publications id = 0 8160 1364 0 pages = 115] referring to alloys which are composed primarily of… …
88Diamond simulant — Due to its low cost and close visual likeness to diamond, cubic zirconia has remained the most gemologically and economically important diamond simulant since 1976. The high price of gem grade diamonds, as well as significant ethical concerns of… …
89BKL singularity — A BKL (Belinsky Khalatnikov Lifshitz) singularityHarvnb|Belinsky|Khalatnikov|Lifshitz|1970] is a model of the dynamic evolution of the Universe near the initial singularity, described by a non symmetric, chaotic, vacuum solution to Einstein s… …
90Software tools for molecular microscopy — There are a large number of software tools or software applications that have been specifically developed for the field sometimes referred to as molecular microscopy or cryo electron microscopy or cryoEM. Several special issues of the Journal of… …
