Terminology Service for NFDI4Health
All terms in ONE
| Label | Id | Description |
|---|---|---|
| continuous wave NMR instrument | OBI_0000486 | [Continuous wave NMR spectrometers are similar to optical spectrometers, but the sample is held in a strong magnetic field, where the frequency of the source is slowly scanned (in some instruments, the source frequency is held constant, and the field is scanned).] |
| linear discriminant functional analysis | OBI_0200101 | [Linear discriminant functional analysis (LDFA) is a multivariate technique used in special applications where there are several intact groups (random assignment may be impossible) and they have been measured on several independent measures. Thus, you will want to describe how these groups differ on the basis of these measures. In this case, classification and prediction is the main objective.] |
| canonical variate analysis | OBI_0200100 | [canonical variate analysis is a form of discriminant analysis that takes several continuous predictor variables and uses the entire set to predict several criterion variables, each of which is also continuous. CVA simultaneously calculates a linear composite of all x variables and a linear composite of all y variables. Unlike other multivariate techniques, these weighted composites are derived in pairs. Each linear combination is called a canonical variate and takes the general linear form.] |
| hypodermis | UBERON_0002072 | [Lowermost layer of the integumentary system in vertebrates. Types of cells that are found in the hypodermis are fibroblasts, adipose cells, and macrophages. It is derived from the mesoderm, but unlike the dermis, it is not derived from the dermatome region of the mesoderm. The hypodermis is used mainly for fat storage[WP].] |
| multiple linear regression analysis | OBI_0200103 | [multiple linear regression is a regression method that models the relationship between a dependent variable Y, independent variables Xi, i = 1, ..., p, and a random term epsilon. The model can be written as Y = \beta_0 + \beta_1 X_1 + \beta_2 X_2 + \cdots +\beta_p X_p + \varepsilon where \beta_0 = 0 is the intercept ("constant" term), the \beta_i s are the respective parameters of independent variables, and p is the number of parameters to be estimated in the linear regression.] |
| regression analysis method | OBI_0200102 | [Regression analysis is a descriptive statistics technique that examines the relation of a dependent variable (response variable) to specified independent variables (explanatory variables). Regression analysis can be used as a descriptive method of data analysis (such as curve fitting) without relying on any assumptions about underlying processes generating the data.] |
| partial least square regression analysis | OBI_0200105 | [Partial least squares regression is an extension of the multiple linear regression model (see, e.g., Multiple Regression or General Stepwise Regression). In its simplest form, a linear model specifies the (linear) relationship between a dependent (response) variable Y, and a set of predictor variables, the X's, so that Y = b0 + b1X1 + b2X2 + ... + bpXp In this equation b0 is the regression coefficient for the intercept and the bi values are the regression coefficients (for variables 1 through p) computed from the data.] |
| principal component regression | OBI_0200104 | [The Principal Component Regression method is a regression analysis method that combines the Principal Component Analysis (PCA)spectral decomposition with an Inverse Least Squares (ILS) regression method to create a quantitative model for complex samples. Unlike quantitation methods based directly on Beer's Law which attempt to calculate the absorbtivity coefficients for the constituents of interest from a direct regression of the constituent concentrations onto the spectroscopic responses, the PCR method regresses the concentrations on the PCA scores.] |
| partial least square discriminant analysis | OBI_0200107 | [PLS Discriminant Analysis (PLS-DA) is a discriminant analysis performed in order to sharpen the separation between groups of observations, by hopefully rotating PCA (Principal Components Analysis) components such that a maximum separation among classes is obtained, and to understand which variables carry the class separating information.] |
| DNA methylation | GO_0006306 | [The covalent transfer of a methyl group to either N-6 of adenine or C-5 or N-4 of cytosine.] |
| b transformation | OBI_0200109 | [A b transformation is a data transformation obtained by applying the function B described in what follows to a (one dimensional) real number input. B(x)= a*exp(b*x)-c*exp(-d*x)+f, where exp denotes an exponential transformation and a, b, c, d, f are real constants with a, b, c, d positive with the objective of normalization.] |
| eh transformation | OBI_0200108 | [An eh transformation is a data transformation obtained by applying the function EH described in what follows to a (one dimensional) real number input. EH(x)=exp(x*d/r)+b*(d/r)*x-1, if x>=0, and EH(x)=-exp(-x*d/r)+b*(d/r)*x+1, otherwise. Here exp denotes an exponential transformation and b, d, r are positive real constants with the objective of normalization.] |
| vacuum degasser | OBI_0000495 | [A degassing system used for degassing solvents in liquid chromatography. Dissolved gasses, usually nitrogen and oxygen from the air, tend to be evolved in the mobile phase as the pressure is reduced when the mobile phase leaves the liquid chromatography column and enters the detector. Gasses in the mobile phase in the detector can produce completely unacceptable noise and, thus, must be removed. The dissolved gasses were originally removed under vacuum but, unfortunately, are soon replaced if the solvent is left in contact with air at atmospheric pressure. For this reason degassing is now usually carried out by bubbling helium through the mobile phase reservoirs. Secondly, vacuum is used in the thermionic detector. This consists of a device, very similar in design to the thermionic valve which is attached to a vacuum and a small quantity of the eluent from a gas chromatography column allowed to bleed through it. Helium is used as the carrier gas. The presence of solute vapor causes the thermionic current to fall. This type of detector tends to become contaminated rather readily.] |
| liquid chromatography autosampler | OBI_0000494 | [Designed to perform capillary LC with injection of sample volumes ranging from nL to L.] |
| rapid resolution column | OBI_0000493 | [A rapid resolution column is a chromatography column as marketed by Agilent, which is used with a rapid resolution cartridge to ensure a fast chromatography process with good separation resolution.] |
| Bruker B-ACS system | OBI_0000492 | [The Bruker Automatic Sample Changer (B-ACS 60/120), used in conjunction with Bruker DISNMR, UXNMR or XWIN-NMR software, provides dialog-guided facilities which allow the user to easily and effectively perform automatic (continuous) experiments. Features include a 60 or 120 sample capacity, random accessing of samples, positive sample identification with the optional bar code reader, and temperature control of individual samples with the optional sample heater unit.] |
| direct detection NMR probe | OBI_0000491 | [An NMR probe designed to allow the direct detection of acquisition nuclei.] |
| cation exchange column | OBI_0000490 | [A cation exchange column is a chromatography column that is used in cation exchange chromatography.] |
| ion exchange column | OBI_0000560 | [An ion exchange column is a chromatography column that is used in ion exchange chromatography and anion or cation exchange resins to enable separation.] |
| NMR console | OBI_0000499 | [A component of an NMR instrument that controls the activities of the other components.] |