STUDIES ON CRYSTAL SEMI-PERMEABLE MEMBRANE II. ON THE FORMATION OF BARIUM SULFATE SEMI-PERMEABLE MEMBRANE
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چکیده
منابع مشابه
Studies on crystal semi-permeable membrane. II. On the formation of barium sulfate semi-permeable membrane.
The 1st report1) in a series of these studies, which was deduced from the report by Miyamoto and Takikawa2) that a precipitate of calcium silicate and magnesium silicate formed a semi-permeable membrane at the Pringsheim'a equilibrium point, recognized a formation of the so-called •hCrystal semi-permeable membrane•h also in a common water-insoluble salt (In this case, sodium carbonate and calci...
متن کاملStudies on crystal semi-permeable membrane. I. On the formation of the semi-permeable membrane of calcium carbonate.
present for the formation mechanism. A famous •gPfeffer's semi-permeable membrane•h made of potassium ferrocyanide and copper sulfate in unglazed pottery cylinder by W. Pfeffer in 1877 is quite different from an artificial semi-permeable membrane at present, which is organized only by handling of extending high molecular substances, that is, collodium, cellophane, and various synthetic resins. ...
متن کاملLong-term air monitoring of organochlorine pesticides using Semi Permeable Membrane Devices (SPMDs) in the Alps.
Atmospheric sampling of organochlorine pesticides (OCPs) was conducted using Semi Permeable Membrane Devices (SPMDs) deployed in the Alps at different altitudinal transects for two consecutive exposure periods of half a year and a third simultaneous year-long period. Along all the altitude profiles, the sequestered amounts of OCPs increased in general with altitude. SPMDs were still working as ...
متن کاملElectrostatic interaction of neutral semi-permeable membranes.
We consider an osmotic equilibrium between bulk solutions of polyelectrolyte bounded by semi-permeable membranes and separated by a thin film of salt-free liquid. Although the membranes are neutral, the counter-ions of the polyelectrolyte molecules permeate into the gap and lead to a steric charge separation. This gives rise to a distance-dependent membrane potential, which translates into a re...
متن کاملA Highly Hydrogen Permeable Silica Membrane Supported on Porous Alumina
In previous chapters, the synthesis of a highly hydrogen selective membrane formed by the deposition of a silica layer on top of a Vycor glass substrate was discussed. In this chapter, the preparation of a composite membrane using a porous alumina support is described. This membrane showed a high hydrogen permeance of the order of 10 mol m s Pa at 873 K with selectivity of hydrogen over CH4, CO...
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ژورنال
عنوان ژورنال: Japanese Journal of Medical Science and Biology
سال: 1954
ISSN: 0021-5112,1884-2828
DOI: 10.7883/yoken1952.7.139