| D007700 |
Kinetics |
The rate dynamics in chemical or physical systems. |
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| D008962 |
Models, Theoretical |
Theoretical representations that simulate the behavior or activity of systems, processes, or phenomena. They include the use of mathematical equations, computers, and other electronic equipment. |
Experimental Model,Experimental Models,Mathematical Model,Model, Experimental,Models (Theoretical),Models, Experimental,Models, Theoretic,Theoretical Study,Mathematical Models,Model (Theoretical),Model, Mathematical,Model, Theoretical,Models, Mathematical,Studies, Theoretical,Study, Theoretical,Theoretical Model,Theoretical Models,Theoretical Studies |
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| D012044 |
Regression Analysis |
Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable. |
Regression Diagnostics,Statistical Regression,Analysis, Regression,Analyses, Regression,Diagnostics, Regression,Regression Analyses,Regression, Statistical,Regressions, Statistical,Statistical Regressions |
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| D006207 |
Half-Life |
The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacologic, physiologic, or radiologic activity. |
Halflife,Half Life,Half-Lifes,Halflifes |
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| D006540 |
Herbicides |
Pesticides used to destroy unwanted vegetation, especially various types of weeds, grasses (POACEAE), and woody plants. Some plants develop HERBICIDE RESISTANCE. |
Algaecide,Algicide,Herbicide,Algaecides,Algicides |
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| D001673 |
Biodegradation, Environmental |
Elimination of ENVIRONMENTAL POLLUTANTS; PESTICIDES and other waste using living organisms, usually involving intervention of environmental or sanitation engineers. |
Bioremediation,Phytoremediation,Natural Attenuation, Pollution,Environmental Biodegradation,Pollution Natural Attenuation |
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| D012987 |
Soil |
The unconsolidated mineral or organic matter on the surface of the earth that serves as a natural medium for the growth of land plants. |
Peat,Humus,Soils |
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| D012988 |
Soil Microbiology |
The presence of bacteria, viruses, and fungi in the soil. This term is not restricted to pathogenic organisms. |
Microbiology, Soil |
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| D012989 |
Soil Pollutants |
Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading. |
Soil Pollutant,Pollutant, Soil,Pollutants, Soil |
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| D013449 |
Sulfonamides |
A group of compounds that contain the structure SO2NH2. |
Sulfonamide,Sulfonamide Mixture,Sulfonamide Mixtures,Mixture, Sulfonamide,Mixtures, Sulfonamide |
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