mass matrix

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• Mass matrix — In computational mechanics, a mass matrix is a generalization of the concept of mass to generalized coordinates. For example, consider a two body particle system in one dimension. The position of such a system has two degrees of freedom, the… …   Wikipedia

• Matrix (mathematics) — Specific elements of a matrix are often denoted by a variable with two subscripts. For instance, a2,1 represents the element at the second row and first column of a matrix A. In mathematics, a matrix (plural matrices, or less commonly matrixes)… …   Wikipedia

• Mass spectrometry — (MS) is an analytical technique that measures the mass to charge ratio of charged particles.[1] It is used for determining masses of particles, for determining the elemental composition of a sample or molecule, and for elucidating the chemical… …   Wikipedia

• Mass spectrometry software — is software used for data acquisition, analysis, or representation in mass spectrometry. Contents 1 MS/MS peptide identification 1.1 Database search algorithms 1.1.1 SEQUEST 1.1.2 …   Wikipedia

• Mass collaboration — is a form of collective action that occurs when large numbers of people work independently on a single project, often modular in its nature. Such projects typically take place on the internet using social software and computer supported… …   Wikipedia

• Mass spectrometry imaging — (also known as imaging mass spectrometry) is a technique used in mass spectrometry to visualize the spatial distribution of e.g. compounds, biomarker, metabolites, peptides or proteins by their molecular masses. Emerging technologies in the field …   Wikipedia

• matrix — (n.) late 14c., uterus, womb, from O.Fr. matrice womb, uterus, from L. matrix (gen. matricis) pregnant animal, in L.L. womb, also source, origin, from mater (gen. matris) mother (see MOTHER (Cf. mother) (n.1)). Sense …   Etymology dictionary

• matrix — ► NOUN (pl. matrices or matrixes) 1) an environment or material in which something develops. 2) a mould in which something is cast or shaped. 3) Mathematics a rectangular array of quantities in rows and columns that is manipulated according to… …   English terms dictionary

• Matrix-assisted laser desorption/ionization — MALDI TOF mass spectrometer Matrix assisted laser desorption/ionization (MALDI) is a soft ionization technique used in mass spectrometry, allowing the analysis of biomolecules (biopolymers such as DNA, proteins, peptides and sugars) and large… …   Wikipedia

• Matrix-assisted laser desorption electrospray ionization — Schematic of a typical MALDESI setup Matrix assisted laser desorption electrospray ionization (MALDESI) is a method for creating ions that can be used for chemical analysis in a mass spectrometer.[1] It is related to desorption electrospray… …   Wikipedia

• matrix — 1. [NA] The formative portion of a tooth or a nail. 2. The intercellular substance of a tissue. 3. A surrounding substance within which something is contained or embedded, e.g., the fatty tissue in which blood vessel s or …   Medical dictionary