Jacobson's Organ: And the Remarkable Nature of Smell by Lyall Watson

By Lyall Watson

Odor is our such a lot seductive and provocative experience, invading each area of our lives. we will establish our family, observe the supply of a possible mate, sniff out threat, and distinguish among strong and undesirable nutrients simply with our noses.In this mind-blowing and pleasant publication, Lyall Watson rescues our such a lot unappreciated feel from obscurity. He brings to gentle new proof bearing on Jacobson's Organ: an anatomical-feature stumbled on excessive within the nostril in 1811 and brushed aside for hundreds of years as a vestigial ghost. but contemporary learn has proven Jacobson's Organ to be a very influential pheromonal mechanism that feeds the world of the mind affecting our knowledge, emotional states, and sexual behavior.

Following the seven sessions of scent devised by means of the pioneering botanist Carolus Linnaeus in his Odores Medicamentorum, Watson examines the jobs of scent and pheromones in people, vegetation, and animals. He finds the curious ways that timber speak their misery, the olfactory skills of feral childrens, the bond we have now with our offspring, the psychosexual results of body spray, and the hyperlink among scent and reminiscence formation. Jacobson's Organ unlocks the door to the unusual global of this mysterious feel.

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On peut en effet demontrer que, si des atomes sont legerement separes les uns des autres et si la premiere interaction a lieu approximativement dans la direction de I'alignement, une condition assez simple sur les ecartements et le diametre permet d'assurer que, de proche en proche, la direction de transmission des energies et quantites de mouvements se rapproche de la direction de I'alignement. Cependant tous les defauts crees ne contribuent par necessairement au dommage a long terme ; en effet, meme pendant la cascade, il y a recombinaison.

II est done plus global et plus general que TRIM, sans en avoir la precision fine. De facon pratique, il est cependant tout a fait acceptable. On trouvera une description de ce logiciel dans la reference : D Simeone et al. (1997) Contribution of recoil atoms to irradiation damage in absorber materials, J Nucl. , 246 206. html] est aussi un code fonde sur I'approximation des collisions binaires comme TRIM. II a cependant la particularity de considerer la position des atomes sur des sites cristallins, alors que TRIM considere que les atomes peuvent etre presents en tout point de I'espace.

L'essai de durete consiste a imposer la penetration d'une bille ou d'une pyramide dans le metal par application d'une force constante. C'est un essai simple qui induit une deformation plastique. Comme la durete peut etre mesuree tres localement, on peut determiner des gradients de proprietes mecaniques, a I'echelle de quelques dizaines de micrometres. Dans le cas d'une empreinte pyramidale (essai Vickers), la durete Hv est donnee par Hv = F/S, ou Fest la charge appliquee et 5 la surface de I'empreinte.

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