Dictionary » A » Alder



(Science: botany) a tree, usually growing in moist land, and belonging to the genus Alnus. The wood is used by turners, etc.; the bark by dyers and tanners. In the u. S. The species of alder are usually shrubs or small trees. Black alder. A European shrub (rhamnus frangula); alder buckthorn. An American species of holly (ilex verticillata), bearing red berries.

Origin: oe. Aldir, aller, fr. As. Alr, aler, alor, akin to D. Els, g. Erle, Icel. Erlir, erli, Swed. Al, dan. Elle, el, L. Alnus, and E. Elm.

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PLEASE HELP! arguments in evolution

... get the right circumstances to make them come together in the right geometry. Just heat up some alkenes and dienes and you'll get some rings(diels alder reaction).

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by mith
Thu May 01, 2008 12:07 am
Forum: Evolution
Topic: PLEASE HELP! arguments in evolution
Replies: 52
Views: 25282

The Fiber Disease

... reassortment (e.g. H5N1 influenza [32] and Ophiostoma novo-ulmi, the agent of Dutch elm disease [33]) and hybridization (e.g. Phytophthora alni in alder trees in north-west Europe appears to be an allopolyploid recombinant between a newly introduced pathogen of hard woods, P. cambivora, and a related ...

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by London
Wed Jul 12, 2006 10:47 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6245935

An Arrow'mate'!!!

... make benzene. :) @Baikuza You can't make benzene in that way...I can think up one reaction that may bring us into benzene synthesis which is Diels-Alder reaction (addition into conjugated dienes) followed by heating up with high pressure and concentrated strong bases. About pheromone, I can say ...

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by victor
Tue May 30, 2006 12:27 pm
Forum: Physiology
Topic: An Arrow'mate'!!!
Replies: 22
Views: 12175

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