File:Archives des sciences physiques et naturelles (1908) (14766119355).jpg

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Identifier: archivesdesscien2519soci (find matches)
Title: Archives des sciences physiques et naturelles
Year: 1896 (1890s)
Authors: Société de Physique et d'Histoire Naturelle (Genève)
Subjects: PHYSIK NATURWISSENSCHAFTEN UND MATHEMATIK PHYSICS PHYSIQUE SCIENCES ET MATHEMATIQUES SCIENCE AND MATHEMATICS
Publisher: Genève : Bureau des Archives
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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Text Appearing Before Image:
écipitée pure 1 200 Silice précipitée calcinée . 1 200 Terre dinfusoires . 2 100 Charbon animal. 2 200 Laine 1 200 2. Ponceau. Essais à 85°. Concentrations. 0.5 i 2 3 4 5 %, Adsorbé en mmgr. Laine... 2 gr. 200 cm3 7.1 10.6 26 28 36 39 Concentrations. 2.5 5 °/oo Adsorbé en mmgr Charbon animal 2 gr. 200 cm3 211 263 Si nous calculons les valeurs de ;3 et e correspon-dant à ces derniers résultats, nous obtenons : Matière colorante adsorbante. Bleu de méthylène Charbon animal .... » Silice précipitée.... » » calculée » Terre dinfusoires... P 28.3 40 40 6.11 0.2550.30.30.3 Les résultats que nous avons obtenus peuvent êtrereprésentés graphiquement, en portant en ordonnéesles quantités de colorant adsorbé et en abcisses lesconcentrations, on obtient une série de courbes con-caves du côté de laxe des %% ainsi que le représente la DE LA TEINTURE ET DE laDSORPTION. 445 figure suivante (fig. I) qui exprime les valeurs de lasilice non calcinée à 1 7° et à 85°.
Text Appearing After Image:
fig. 1. — Concentrations.Silice non calcinée de bleu de méthylène. Avant dexaminer la signification des résultats obte-nus, nous devons faire quelques remarques. 1° Dans tous nos essais, la quantité de substanceadsorbante employée représente la substance supposéesèche, cest-à-dire que dans chaque cas nous avonspesé la quantité indiquée, plus la quantité deau hy-groscopique. Leau hygroscopique, suivant la naturede la substance, est dosée de 85° (laine) à 110° (char-bon). Cette quantité deau varie dun corps adsorbantà lautre. 446 LES RELATIONS • Elle est de 31 % dans le charbon de sang.11.96 » le charbon animal.9.15 » la laine.15.13 » la silice précipitée. Leau hygroscopique varie dailleurs très facilementpour le même produit, non seulement par les condi-tions atmosphériques, mais suivant les traitementspréalables que le corps a subi. 2° Le mode de préparation du produit a aussi uneinfluence sur le pouvoir adsorbant. Nous ne choisissonspas nos exemple

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https://www.flickr.com/photos/internetarchivebookimages/14766119355/

Author Internet Archive Book Images
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Volume
InfoField
1908
Flickr tags
InfoField
  • bookid:archivesdesscien2519soci
  • bookyear:1896
  • bookdecade:1890
  • bookcentury:1800
  • bookauthor:Socie__te___de_Physique_et_d_Histoire_Naturelle__Gene__ve_
  • booksubject:PHYSIK
  • booksubject:NATURWISSENSCHAFTEN_UND_MATHEMATIK
  • booksubject:PHYSICS
  • booksubject:PHYSIQUE
  • booksubject:SCIENCES_ET_MATHEMATIQUES
  • booksubject:SCIENCE_AND_MATHEMATICS
  • bookpublisher:Gene__ve___Bureau_des_Archives
  • bookcontributor:University_of_Illinois_Urbana_Champaign
  • booksponsor:University_of_Illinois_Urbana_Champaign
  • bookleafnumber:450
  • bookcollection:university_of_illinois_urbana-champaign
  • bookcollection:americana
Flickr posted date
InfoField
28 July 2014



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