摘要:
Apparatus (11) for skinning the casing from a chain of encased frankfurters (16). The apparatus has a plurality of carrier wheels (27, 29, and 31) which conveys the frankfurter chain (16) in a sinuous path to provide at least a pair of stressing stations (107, 11) where the casing is stressed first on one side and then the other. Knives (119, 123) are located at the stressing stations which slit the casing on opposite sides thereof.
摘要:
Procédé de régulation de l'aération d'un traitement biologique d'eaux usées mettant en oeuvre une étape d'élimination du carbone en aérobiose, une étape de nitrification en aérobiose et une étape de dénitrification en anoxie, procédé dans lequel on mesure en permanence le potentiel d'oxydoréduction dans un système de traitement, on établit la courbe d'évolution du potentiel d'oxydoréduction en fonction du temps et on en calcule la dérivée, caractérisé en ce que, lorsque la dérivée tend vers 0, on corrèle la dérivée et la valeur du potentiel d'oxydoréduction pour déterminer la mise en marche, la poursuite ou l'arrêt de l'aération.
摘要:
A method is disclosed for controlling the movement of an autonomous, random movement electric machine within a zone of movement which may contain obstacles. The machine is fitted with at least two detectors fitted on either side of the machine centre line. The machine is operated in forward mode (phase a), its movement is reversed over a predetermined distance in response to an obstacle detection or zone boundary signal (phase b), its direction of movement is altered by turning it through a predetermined angle away from that of the detector emitting the signal (phase c), and its direction of movement is again reversed. An electric machine is also provided, particularly a lawn mower, using the above method.
摘要:
An integrated monolithic gas sensor comprises a substrate and thin films deposited on this substrate. The thin films include a thin film electrically conductive heating element, a thin film conductive reference electrode, and a second thin film conductive electrode, these electrodes and heating element being electrically isolated from each other. A thin film ionic conductor and a thin film reactive gas sensitive layer are placed between the reference electrode and the second conductive electrode to form an electrolytic cell in which an electrolytic reaction including as reagent the gas to be detected produces between the two conductive electrodes an electromotive force indicative of the concentration of the gas. Also deposited is a micro-thermometer formed of a thin film wire having a temperature-dependent resistance. When the gas to be detected is CO2, the ionic conductor may comprise NASICON of formula Na3Zr2Si2PO12, and the reactive gas sensitive layer may comprise Na2CO3.
摘要:
Composition d'acier inoxydable contenant de 19 à 22% en poids de chrome, de 8 à 11% en poids de nickel, de 2,50 à 4,25% en poids de manganèse, de 2,00 à 3,00 % en poids de molybdène, de 0,25 à 0,80% en poids de niobium, de 0,35 à 0,50% en poids d'azote, jusqu'à 0,08% en poids de carbone, jusqu'à 0,75% de silicium, jusqu'à 0,025% en poids de phosphore, jusqu'à 0,01% en poids de soufre, le complément étant du fer et d'éventuelles imppuretés, ayant subi un affinage en réacteur AOD et éventuellement une refusion sous laitier. Une telle composition permet de réaliser des pièces qui, après traitement thermique et éventuellement écrouissage, présentent des caractéristiques mécaniques, des propriétés d'étanchéité et un amagnétisme permettant leur utilisation en ultravide et à très basse température.
摘要:
Matériel d'ostéosynthèse en forme de plaque, clou ou clou-plaque et vis-plaque, à face de contact osseux lisse ou rugueuse, recouverte d'un revêtement de surface destiné à améliorer la qualité du contact avec l'os et même à stimuler l'ostéogénèse.
摘要:
Harnessing device for a horse-drawn vehicle, comprising a single shaft (2) passing above the back of the horse and connected at its front portion to a harness (5, 6, 7) via a traction cradle (4) to which the mono-shaft (2) is rotatingly mounted and, at its rear portion, to a horse-drawn vehicle (3), characterized in that the cradle (4) comprises two arches (9, 10) joined at their lower portion for connection with a harness collar (5) and spaced progressively from each other till they reach a maximum distance straight above the withers of the horse, an element (11) integral with the mono-shaft (2) being rotatingly mounted on a member (12) connecting both arches (9, 10) at their maximum spacing, and in that the cradle bears on the horse back via two hinged flaps (15, 16) mounted on the rear arch (10) and situated on either side of the median line of the horse back. The mono-shaft (2) carried by the arch (4) is connected to a wheeled (37) vehicle (3) through a shock absorber-suspension device.