摘要:
The measuring head enables the production of measuring signals relating to electrical activity and measuring signals relating to an ionic or physico-chemical activity, notably pH, and is designed to be located on or in parts of a living body, notably on the head of an unborn infant. It comprises an insulating body bearing fastening claws. At the moment of positioning, the insulating body introduces actively an electrode sensitive to the electrical activity and at least one electrode sensitive to an ionic or physical activity. These electrodes are constructed in needle form, body body having also a reference electrode associated with the electrode sensitive to the ionic or physical activity.
摘要:
Comprising a plurality of assembled solar energy collector elements. Cold liquid is supplied at one end and water heated by the solar energy is drawn off at the other end of the device. The liquid circulates through the device in contact with an absorbent mat of intermingled fibers of dark color which is exposed to the solar radiation through at least one translucent sheet which creates a glasshouse effect. The mat guides the flow of liquid by the effect of capillarity and gravity during the heating of the liquid.
摘要:
High current ion implanter of the type comprising, in a vacuum enclosure, an ion source, means for extracting these ions, scanning means and a sample-carrying target, wherein the scanning means are of the electrostatic type and comprise deflecting plates connected to a sawtooth-variable voltage source and wherein a regulatable magnetic refocussing means are disposed in the vicinity of said plates.A particular application of the invention is to the construction of ion implanters intended for use in the manufacture of semiconductors.
摘要:
The invention relates to a microwave applicator intended to radiate a uniform power intensity to an elongated zone of which the frequency is in a predetermined range situated around a central frequency F. This applicator includes a wave guide 1 provided with a plurality of resonant slots 4 of which the centers are separated by a distance of an even number of half wave lengths .lambda.g/2, if .lambda.g is the length of guided wave corresponding to the central frequency F. The shunt slots are aligned on a longitudinal axis situated in an axial plane of the guide and are each associated with an inside post arranged in the guide on the transverse axis of said slot, so that the various slots radiate with essentially uniform amplitude. The wave guide is provided with outside posts of adjustable height penetrating into each inside post through the guide and flanges rising above the guide at the periphery of the face provided with shunt slots.
摘要:
A device for mitigating the splashing of droplets of molten metal during the pouring of same into a mould comprises a strip or strips of material which form a system of polygonal cells. The device is for vertical location with the strips edgewise in the base of a mould and fulfills the function of either a splash-guard when casting direct or a float when bottom-casting.
摘要:
A system for transmitting data between distant locations comprises a modem at each location and a communication channel, typically a telephone line, whose transfer function has a principal component whose variation is slow and a second component whose variation is faster, but whose action is lesser. A correction device is located in the modem at the output of the channel and comprises an equalization filter constructed to compensate for the principal component and a digital adaptive network having a few coefficients and a low time constant, compatible with the frequency of the second component. The coefficients of the digital network may be adapted independently of those of the equalization filter.
摘要:
A method and apparatus for controlling a heated bath of molten material to obtain controlled solidification, wherein the molten bath is kept in constant rotational movement relative to the solid portion of the material being treated and the mechanical action due to the viscous friction which develops in the bath is detected and thereby controlled, said method being applicable to the floating zone method and the Czochralsky crystal drawing method and being capable of producing ingots of high dimensional regularity.
摘要:
Comprising a plurality of assembled solar energy collector elements. Cold liquid is supplied at one end and water heated by the solar energy is drawn off at the other end of the device. The liquid circulates through the device in contact with an absorbent mat of intermingled fibres of dark color which is exposed to the solar radiation through at least one translucent sheet which creates a glasshouse effect. The mat guides the flow of liquid by the effect of capillarity and gravity during the heating of the liquid.
摘要:
This prismatic linear electric motor comprises an inductor constituted by an elongated prismatic core surrounded by coils themselves separated by magnetic strips ensuring the conduction of the magnetic flux to a movable armature of U-shaped cross-section, which encloses the inductor. This inductor presents three active faces opposite the two flanges and the web respectively of the movable U-sectioned armature, and the fourth face of the inductor which is not used is in contact with an electrically conducting support which acts as screen against magnetic leakages. Each flat coil enclosed by two magnetic strips is spaced apart from the adjacent flat coils by annular gaps delimited by the magnetic strips and means are provided to cause cooling air to circulate in each gap between the flat coils.
摘要:
The present invention relates to a projector comprising two optical systems enabling transparencies to be projected with cross-fading, in 3-D and with double-width panning, said projector operating with a single transparency distributing and recuperating magazine, in which the transparencies are arranged in the same order as if they were to pass in a single-lens projector; said projector comprises four parallel transparency guide slots, which are parallel to one another and transverse with respect to the axes of two optical systems in which the transparencies circulate in pairs, said guide slots being extended by a switching means whose role is to cause the transparencies which have already been projected to pass from the forward guide slots into the return guide slots, and thus to cause the transparencies to return to the same compartment of the same magazine from which they left. These displacements are possible due to a recuperator having multiple functions. Simultaneously to the displacement of the recuperator, a double potentiometer in relation with an electronic device effects cross-fading. This projector may be used for simple projection, but without a gap between two transparencies, for 3-D and for double-width panning.