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Magic 211 natural

Magic Chemistry. It also reflects in a more general way the exciting and sometimes indeed even magic nature of chemistry, which with its extremely broad scope cuts through many of the sciences, truly being a central science. [Pg.287]

An inhibitor is a substance that retards a reaction. An inhibitor is also present in "catalytic" or sub-stoichiometric amounts. In a radical chain reaction an inhibitor may be a radical scavenger that interrupts the chain. In a metal catalysed reaction an inhibitor could be a substance that adsorbs onto the metal making it less active or blocking the site for substrate co-ordination. We also talk about a poison, a substance that stops the catalytic reaction. A poison may kill the catalyst. The catalyst dies, we say, after which it has to be regenerated wherever possible. We will often see the word co-catalyst, a substance that forms part of the catalyst itself or plays another role somewhere in the catalytic cycle. We inherited a florid language from our predecessors to whom catalysis was black magic. Naturally, these words are rather imprecise for a description of catalysis at the molecular level. [Pg.2]

Seifert, G. Nanomaterials Nanocluster magic. Nature Mater. 3, 77—78 (2004). [Pg.232]

When establishing confidence intervals from data, analysts are sometimes told to make seven measurements. The magical nature of this number stems from the fact that the standard deviation of seven results is just greater than the 95% confidence interval of the mean. How so Because the 95% confidence interval for n = l is /0.05",6 s/ /1 = (2.45 s)/2.65 (/0.05",6 = 2.45 and /7 = 2.65), and so these nearly cancel leaving s as about the 95% confidence interval of the mean. [Pg.58]

To perform a series of chemical experiments in a hiboratorj, and to present the same as part of an entertainment of a magical or quasi-magical nature are two totally different things. Success or non-success in the latter cose depends far more on the manner in which they are presented, than on the experiments themselves. Let us take Expeiimeut 24 and develop it, dealing first with the effects. [Pg.136]

Methyl 6-hydroxy-3-methylhexanoate is our 1,6-difunctional target molecule. Obvious precursors are cyclohexene and cyclohexadiene derivatives (section 1.14). Another possible starting material, namely citronellal, originates from the "magic box of readily available natural products (C.G. Overberger, 1967, 1968 E.J. Corey, 1968D R.D. Clark, 1976). [Pg.206]

Livington, J. D. (199(i). Driving Force The Natural Magic of Magnets. Cambridge, MA Hai"vard University Press. [Pg.745]

The structural interpretation of the principal quantum number of nucleonic orbital wave functions and the structural basis provided by the close-packed-spheron theory for the neutron and proton magic numbers are discussed in notes submitted to Phys. Rev. Letters and Nature (L. Pauling, 1965). [Pg.811]

The expert is aware that the electron s history has no significance, but a learner may well expect there to be a greater attraction between an atomic core and the bonding electron that belongs to that atom (Taber, 1998). Such beliefs may seem rather bizarre for those used to thinking of chemistry in terms of fundamental concepts (such as energy and forces), but actually reflect one of the basic principles of magic that seem to commonly influence people s intuitions about the natural world (Nemeroff Rozin, 2000). Indeed the notion that a past association leaves some... [Pg.81]

Bacon, Roger. Roger Bacon s letter concerning the marvellous power of art and of nature and concerning the nullity of magic, translated by T. L. Davis. .. together with notes and an account of Bacon s life and work. Edited by Tenney L. Davis. Easton (PA) Chemical Publ Co, 1923. 76p. [Pg.43]

Vaughan, Thomas and Rebecca Vaughan. Aqua Vitae Non Vitis or, the radical humiditie of Nature mechanically, and magically dissected by the conduct of fire, and ferment (British Library MS, Sloane 1741 edited and translated with an introduction by Donald R. Dickson. Edited by Donald R. Dickson. Tempe (AZ) Arizona Center for Medieval and Renaissance Studies, 2001. liii, 270 p. [Pg.100]

Agrippa von Nettesheim, Heinrich Cornelius.Three books of occult philosophy or magic. .. Book One - natural magic. .. edited by W. F. Whitehead. Edited by W.F. Whitehead. Chicago 1898 reprint, London Aquarian P, 1898. 288p. [Pg.109]

Paracelsus.The archidoxes of magic Of the supreme mysteries of nature Of the spirits of the planets Of the secrets of alchemy Of occult philosophy The mysteries of the twelve signs of the zodiack The magical cure of diseases Of celestial medicines / Paracelsus [translated from the Latin by Robert Turner], 2nd English ed. [i.e. 1st English ed. reprinted ed. Translated by Robert Turner. London 1656 reprint, London New York Askin Publishers Samuel Weiser, 1975. 162, [29] p. [Pg.138]

Paracelsus. Paracelsus of the supreme mysteries of Nature. Of the spirits of the planets. [Of] occult philosophy. The magical, sympa-thetical, and antipathetical cure of wounds and diseases. The mysteries Iof the twelve signs of the Zodiack. Englished by R. Turner. .. London Printed by J.C. forN. Brook and J. Harison and are to be sold at their shops at the Angel in Comhil, and the holy Lamb neer the East-end of Pauls, 1656. 10 pi, 158, [4] p. [Pg.144]


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See also in sourсe #XX -- [ Pg.197 , Pg.209 , Pg.224 ]




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