There are disclosed diffusion transfer color processes and products which employ novel image dye-providing materials which provide image dyes having the chromophoric system represented by the formula ##STR1## X is H, alkyl, aryl or substituted aryl; W is H or alkyl, R is H or alkyl; m and n are each integers of from 2 to 6. The image dye-providing material includes a diffusion control moiety such as a hydroquinonyl group and may be diffusible or nondiffusible as a function of the diffusion contr...

A method of providing a metal mirror on polycarbonate in which the surface of polycarbonate is pretreated with an aminosilane, preceded by a corona discharge and/or succeeded by a treatment with tannin.

A device for providing a clamping joint comprises two elements (1,2) with complementary threads, each having a flange constituting a clamping surface. Clamping takes place upon relative axial displacement of the elements (1,2) which can be brought about by screws (4) arranged axially in bores in a flange (5) on one element. In order to prevent accidental disengagement of the elements, at least one of the threads adjoins at one end to a part (6) which is wedged against an opposing thread flank wh...

A container device by which a patron of a hotel or motel can leave articles such as shoes outwardly of the patron's room door for pick up and servicing by an attendant, but with the assuredness that the articles are locked for withdrawal only by an attendant who has lock-operation ability. No such ability is required of the patron, who achieves the locked condition of a container by the embrace of the patron's door by an abutment carried by a retainer connected to the container; and it is provid...

A valve body 10 supports a rotary valve member 20 having a transfer port 22. Sealing between a port 17 of the valve and the member 20 is achieved by a sleeve 30 movable towards and away from the member 20. In a valve closed position seal means in a flat end of the sleeve engage a flat base of a recess in the member 20. The member 20 may be provided with a rotary scraper 41 and heaters located in channels 40 and in this construction the valve is suitable for transferring sodium-cooled nuclear fue...

A method of providing different colored layers of paint on glass, which method comprises roughening a surface of the glass, applying a first lot of soluble resist to predetermined areas of the roughened glass, then applying a first color paint to the glass, drying the paint, washing off the first lot of soluble resist to expose unpainted roughened glass, drying the glass, applying a second lot of soluble resist on top of some of the first colored paint and on top of some of the exposed unpainted...

Information for a histogram is provided through generation of a pseudo-random sequence in a shift register connected in predetermined feedback relation. A histogram element storage location is addressed in a random access memory and is used for loading the shift register in parallel when an event corresponding to that element takes place. The shift register proceeds from that point to increment a pseudo-random sequence for the duration of the event, and the concluding value of the sequence is lo...

A method for providing information on the dispersion of a radioactive material within a matrix includes measuring emissions of a first energy, the emissions including emissions of a first type, to provide a first type value; measuring emissions of a second energy, the emissions including emissions of a second type, to provide a second type value; measuring emissions of a third energy, the emissions including emissions of a third type, to provide a third type value; the interrelationship of the v...

By considering ratio of emissions at one or more pairs of energies to threshold values, the invention provides for the determination of the dispersion format of a radioactive material within a matrix, wherein said radioactive material is potentially present in a dispersion format which is self-shielding against emissions arising from said radioactive. In particular the presence of lumpy material or the confirmation that lump material is absent may be provided. The following pairs of energies: 14...

Apparatus for depolarizing light received from a source of light comprises a body of material that defines an optical waveguide, the material of the body and the length of the waveguide being such that when polarized light is propagated through the waveguide, light in one of two polarization eigen states is retarded relative to light in the other polarization eigen state by a time such as to destroy phase coherence between the polarization eigen states of the light emitted by the source. The rel...