natural number -
91Natural science — Part of a series on Science …
92Natural product — Paclitaxel (Taxol) is a natural product derived from the Yew tree.[1] A natural product is a chemical compound or substance produced by a living organism found in nature that usually has a pharmacological or biological activity for use in… …
93Natural product drug discovery — This article describes the utilization of natural resources in the process of finding new drug compounds, an approach commonly referred to as natural product drug discovery . Together with synthetic chemistry, they represent complementary… …
94Natural family planning — This article is about methods of family planning approved by the Catholic Church. For a more general use of the term, see fertility awareness. Natural family planning Background Birth control type behavioral First use Ancient: calendar, LAM mid… …
95Natural resource economics — Economics …
96Natural computing — For the scientific journal, see Natural Computing (journal). Natural computing, also called Natural computation, is a terminology introduced to encompass three classes of methods: 1) those that take inspiration from nature for the development of… …
97Number theory — A Lehmer sieve an analog computer once used for finding primes and solving simple diophantine equations. Number theory is a branch of pure mathematics devoted primarily to the study of the integers. Number theorists study prime numbers (the… …
98Natural disaster — Not to be confused with environmental disaster. A natural disaster is the effect of a natural hazard (e.g., flood, tornado, hurricane, volcanic eruption, earthquake, heatwave, or landslide). It leads to financial, environmental or human losses.… …
99Natural exponential family — In probability and statistics, the natural exponential family (NEF) is a class of probability distributions that is a special case of an exponential family (EF). Many common distributions are members of a natural exponential family, and the use… …
100number theory — Math. the study of integers and their relation to one another. Also called theory of numbers. [1910 15] * * * Branch of mathematics concerned with properties of and relations among integers. It is a popular subject among amateur mathematicians… …
