Hammett equation — ; 1935; 17(1); 125 136 [http://pubs.acs.org/cgi bin/abstract.cgi/chreay/1935/17/i01/f pdf/f cr60056a010.pdf Abstract] ] .The basic idea is that for any two reactions with two aromatic reactants only differing in the type of substituent the change … Wikipedia
Nucleophile — A nucleophile is a species that donates an electron pair to an electrophile to form a chemical bond in a reaction. All molecules or ions with a free pair of electrons can act as nucleophiles. Because nucleophiles donate electrons, they are by… … Wikipedia
Kinetic isotope effect — The kinetic isotope effect (KIE) is the ratio of reaction rates of two different isotopically labeled molecules in a chemical reaction. It is also called isotope fractionation, although this term is somewhat broader in meaning. A KIE involving… … Wikipedia
List of organic reactions — Well known reactions and reagents in organic chemistry include Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z See also Ext … Wikipedia
1/4 + 1/16 + 1/64 + 1/256 + · · · — In mathematics, the infinite series 1/4 + 1/16 + 1/64 + 1/256 + · · · is an example of one of the first infinite series to be summed in the history of mathematics; it was used by Archimedes circa 250–200 BC.Shawyer and Watson p. 3.] Its sum is… … Wikipedia
Нуклеофил — в химии (лат. nucleus «ядро», др. греч. φιλέω «любить») реагент, образующий химическую связь с партнером по реакции (электрофилом) по донорно акцепторному механизму, предоставляя электронную пару, образующую новую связь[1]. Вследствие… … Википедия
Heart rate — is the number of heartbeats per unit of time, typically expressed as beats per minute (bpm). Heart rate can vary as the body s need to absorb oxygen and excrete carbon dioxide changes, such as during exercise or sleep. The measurement of heart… … Wikipedia
List of psychology topics — This page aims to list all topics related to psychology. This is so that those interested in the subject can monitor changes to the pages by clicking on Related changes in the sidebar. It is also to see the gaps in Wikipedia s coverage of the… … Wikipedia
Gene regulatory network — A gene regulatory network (also called a GRN or genetic regulatory network ) is a collection of DNA segments in a cell which interact with each other (indirectly through their RNA and protein expression products) and with other substances in the… … Wikipedia
The Emancipation of Mimi — The Emancipation of Mimi … Wikipedia
