摘要:
Heavy metal and oxidizable contaminants are removed from waste water by electrolysis to obtain metallic precipitation of the heavy metal on a stainless steel cathode while simultaneously other contaminants are oxidized on a lead oxide coated titanium or graphite anode; certain additives may be used to break up complex components; subsequently the partially decontaminated electrolyte is passed through an adsorber column for further removal of said contaminants.
摘要:
A trigger instrument for therapeutic shock waves, in particular for comminuting kidney stones, in which the shock waves are triggered by the R pip of the EKG or by a preselected time-delay thereafter.
摘要:
A template member made of shock wave impermeable material such as air filled foam is affixed to the body of a living being (e.g. a human patient) leaving however an opening through which shock waves from a shock wave generator can pass so that a concrement in the body will be comminuted while the template member shields sensitive organs against parasitic ultrasonic radiation.
摘要:
Electrically conductive ceramic having the composition La.sub.x Ca.sub.y MnO.sub.3+.DELTA. characterized by x= 0.44 to 0.48, Y= 0.42 to 0.50 and the sum of the mol numbers of La and Ca is between 1 to 15% (preferably about 10%) smaller than the mol number of Mn.
摘要:
A couch to securely support and keep in place a completely or partially anesthesized patient in a compression-free and strain-free manner, for instance for contact-less comminution of renal calculi, where the patient by means of strongly mutually inclining and individually adjustable rest surfaces (11, 25, 26) in the shoulder area and at the legs is moved into a back position with a slightly raised upper body and angled legs, with a clear back and rectal area, and with placement of the lower arms next to the head so as to assume a stable hollow-back position.
摘要:
The invention concerns a procedure and a circuit arrangement for a coherent, high-resolution pulse radar applicable to distances from several tens of meters down to less than one meter and which evinces at the same time an accuracy in the cm range; the application is in particular to industrial monitoring operations.Two highly stable pulse sequences are generated in the transmitter and differ only slightly with respect to their pulse repetition frequencies. Both sequences are shaped into microwave pulse bundles and one sequence is processed into transmitter pulses, the other sequence being processed into scanning pulses for a time-expansion procedure. Heterodyning with the scanning pulses takes place in the receiver mixer, the result being a combined formation of intermediate-frequency (IF) and time-expansion. In this manner the signal bandwidth is already decreased by the time-expansion factor in the IF part. This is made possible in that coherent phases are used, i.e., there is an arbitrary but constant time relationship between the rising edge of the controlling pulse and the starting time (initial phase) of the carrier oscillation produced in the microwave oscillator. The oscillators used are microwave resonators driven by extremely short control pulses.
摘要:
This invention relates to an improvement in an apparatus for advancing or retracting a flexible pay-out connection in a controlled manner, for instance a pay-out cable fixed to a satellite body with a pay-out means mounted thereon, in particular for a spin-imparted satellite, the improvement comprising at least one groove means at the periphery of the satellite body to receive the pay-out connection, and at least one elastic holding means to hold the pay-out connection at the groove opening.
摘要:
This invention relates to equipment for rendering visible a specific metal charge of an ion exchanger comprising transparent viewing means, permeable container means behind said viewing means, and a mixture of chargeable resin particles and inert particles in said container means, said inert particles being lighter in weight than said resin particles when the latter are charged with metal ions. The invention also relates to a process for rendering visible a specific metal charge of an ion exchanger.
摘要:
The contact pole of a trolley bus carries at its normally upper end a trolley shoe and an upwardly projecting guide which may jointly pivot on the pole about an approximately vertical axis. When the pole is partly raised by a heavy spring and swung horizontally, the trolley shoe is vertically aligned with an overhead wire when the guide abuts against the wire. When the pole is further raised by the spring, the trolley shoe engages the wire, and the guide is automatically dropped below the trolley shoe so as not to collide with hangers for the overhead wire. When the pole is lowered by an operating mechanism against the biasing force of the spring, a motor-driven element of the mechanism connected to the guide by a motion transmitting train automatically returns the guide to its position above the trolley shoe.
摘要:
A shipping container of molded plastic in whose cavity a load is suspended between sets of three rubber straps diverging from the load toward respective rigid base members on the shell in angularly offset planes, the central strap of each set being less resilient than the two other straps. The straps impede transmission of mechanical shock from the shell to load, and their different resiliencies prevent build-up of load oscillations. The shell protects the load against harmful effects of the atmosphere.