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On etudie le comportement du carbonate de propylene pur en haute tension apres avoir recherche par voie electrochimique les reactions d'oxydation ou de reduction de ce solvant ou de ses impuretes.

The transient space‐charge‐limited current technique developed in crystals is made to fit polar liquids: First, from a theoretical point of view the injection is no longer only limited by space charge, the electrode–liquid contact being non‐Ohmic; second, from an experimental point of view, the electric field distribution is at every moment determined by means of the electro‐optic Kerr effect, and known ions are injected by permselective membranes. Applying this technique makes it possible to estimate the mobility of different carriers injected into different polar liquids and brings out high mobility values of about 2 × 10−3 cm2 V−1·sec−1. Account is taken of the influence of bulk liquid motion to explain the high values of ionic velocities obtained.

During unipolar (or ambipolar) injection of charge carriers into an insulating liquid, a liquid motion is generally observed. This motion, generated by the charge carriers, is thought to be responsible for the high carrier mobility which is about 2×10−3 cm3 V−1 sec−1 in nitrobenzene, i.e., an order of magnitude higher than the true mobility value (1.9×10−4 cm2 V−1 sec−1). Recent schlieren photographs strongly support the assumption that when the applied voltage is high enough, for nitrobenzene of the order 103‐104 V, the “self‐generated” motion is turbulent shortly after the voltage is applied. This turbulence invades the undisturbed fluid at practically constant velocity. Neglecting the true carrier mobility and making certain assumptions concerning the turbulent structure, the charge transport and consequently the entrainment can be described to a good approximation by a Lagrangian diffusion process and the charge distribution is governed by a diffusion equation. The latter remains valid during the stea...

This paper contains descriptions and figures of thirteen species of the callichthyid catfish genus Corydoras of which eight are new to science viz., C. acrensis, C. amapaensis, C. bifasciatus, C. ephippifer, C. gossei, C. oiapoquensis, C. ourastigma and C. xinguensis. The material was collected by Dr. J. P. Gosse during recent expeditions to Brazil and French Guiana. The relationships of the new species with other species of Corydoras are discussed.

Dechambre R. P., Gosse C. État sanitaire et productivité d’un élevage de poules pondeuses exemptes de leucose. In: Bulletin de l'Académie Vétérinaire de France tome 120 n°6, 1967. pp. 291-293.

Zwei Bände in einem Band., Zum Exlibris von Salomon Escher vom Glas, im Wullenhoff, vgl. Wegmann, 1894., Aus dem Vorbesitz der Naturforschenden Gesellschaft in Zürich; Im Vorderen Spiegel Exlibris von Salomon Escher vom Glas, im Wullenhoff

Exlibrisstempel: "Schweizerische Bundeskanzlei" 000185777_0001 Exemplar der ETH-BIB

Du R. P. Jerome Lobo ... ; ... Traduit du Portugais, continué & augmenté de plusieurs Dissertations, Lettres & Mémoires. Par M. Le Grand ..., Titelkupfer, Karten, Auf dem Titelblatt Verbalexlibris von Frédéric Du Bois, datiert auf 1846 ; im vorderen Spiegel Geschenkexlibris mit der Aufschrift: "Legat des Herrn Friedrich du Bois von Montperreux." ; auf der Rückseite des Titelblattes Exlibris der Naturforschenden Gesellschaft in Zürich (Exemplar ZB Zürich; NR 115)

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de M. Picard. Observations astronomiques et physiques faites en l'isle de Cayenne / par M. Richer. Du micromètre / par M. Auzout. De crassitie tuborum & experimenta projectionis gravium / auctore D. Romer, Geschenkexlibris-Etikette: "Legat von Prof. Dr. R. Wolf" 002281405_0001 Exemplar der ETH-BIB