Long wavelength, narrow emission bandwidth fluorecein dyes are provided for detecting spacially overlapping target substances. The dyes comprise 4,7-dichlorofluoresceins, and particularly 1',2',7',8'-dibenzo-4,7-dichlorofluoresceins. Methods of using the dyes in automated DNA sequencing are described.

A method and circuit arrangement for forming an Automatic Gain Control (AGC) signal (10) in the reception of a communication signal in which the interference caused by pulsed interference signals is compensated for using median filtering.

A predetermined number of sectional planes are successively scanned, starting with a sectional plane in an initial position, by shifting a direction of X-ray emission from an X-ray emitting device. A reset operation is effected, after scanning the predetermined number of sectional planes, to switch the direction of X-ray emission to scan a sectional plane in the initial position. An examinee is mo...

A process for producing a semi-interpenetrating polymer network of polytetrafluoroethylene and silicone elastomers is described which comprises the steps of (1) intimately blending a mixture of a major amount of unsintered and unfibrillated particulate polytetrafluoroethylene dispersion resin and minor amounts of (A) a hydrocarbon liquid and (B) an addition curable silicone composition consisting ...

This invention discloses a new bubble forming and stabilizing device for use in a continuous extrusion process for making a blown film and a process for using same. The apparatus comprises a bowl shaped mandrel (14) mounted subsequent to a die (6), the mandrel has an undersurface extending substantially parallel to and spaced from the path of travel of the blown film (8) from the die (6) and the u...

An automatic multi-level storage structure including a building structure having at least one entrance 8 and exit 9 station, a min floor directly accessible from the entrance station 9, and a plurality of storage levels, a plurality of object pallets 10 provided with wheels and adapted to carry objects to be stored. The pallets 10 are movably along, and guided by, a first track fixedly attached to...

A compressed gas container for spraying liquid from an essentially pressureless, compressable product receptacle which is enclosed by an elastically prestressed hollow cylinder made of elastomeric material. The hollow cylinder is able to expand in one direction only and is acted upon by a pressurized gas provided in a clearance space between the product receptacle and the hollow cylinder. The clea...

A housing assembly 100 which uses substantially spherical pieces (rubber balls) 106 for supports (feet). The balls 106 drop into the bottom housing member 104 which has apertures 202 which allow the balls 106 to rest. Each of the balls 106 protrude from the bottom portion of the housing. Preferably, each of the aperatures 202 have a peripheral wall 402 around them which surround and capture each o...

An endless conveyor having a belt which follows a helical conveying path over part of its length and comprises a plurality of self-supporting tiers, wherein the lowermost tier of the stack is supported by a plurality of trolleys (36) running around a support rail (30), the trolleys being individually driven around the support rail by an internal drum (13) which is driven in rotation also to drive ...

The cable receptacle (10) of the present invention allows for substantially unimpaired insertion of a fiber optic cable (12) and the selective impeding of the withdrawal of the fiber optic cable (12) through retention structure. The retention structure is provided by cooperation among a cover (20), a housing (24), a gripper (22), a pivot support arm (52) and a channel (58). The cover (20) includes...

The method and apparatus function to form three-dimensional imagery on plural screen surfaces (2) which are formed by changing planes of imagery. One or more projectors (4) project a plurality of images onto the screen surface from a common axis. The planes of imagery on the screens (2) which are projected by said one or more projectors (4), change at such a speed that, to the eye, the images appe...

The intention is to make it possible to fix a protection ring (3) reliably and in a simple manner on a glazed immersion nozzle (1). The protection ring (3) is secured on the raw glaze (2) of the immersion nozzle (1) by means of a dried silica material.

A biological nitrification/denitrification water treatment plant comprises at least one nitrification reactor and one denitrification reactor, at least one of which is a fluidized bed type, a recycling system for each reactor and a system providing communication between the two reactors, each of these systems incorporating a flow monitoring device and the normal means for supplying and discharging...

Spray can consisting of a reservoir (2), a riser pipe (5) in the reservoir (2) and a valve (6) connected to the riser pipe (5), characterized in that the riser pipe (5) is provided with a pressure regulator (9).

One or more kinds of plenty scattered parts are successively fed out of an automatic feed unit (10). The successive parts are then conveyed at a high speed by a conveyer belt (26). Then the conveying belt (26) is automatically shifted down to a low speed when first parts detecting means (29) detects that a leading end of the successive parts being conveyed at the high speed has arrived at a forwar...

Novel 2,4-Oxazolidinedione compounds of the formula (I): wherein R is an hydrocarbon residue or an heterocyclic group, each of which may independently be substituted; Y is -CO-, -CH(OH) or -NR<3>- (wherein R<3> is an alkyl group, which may itself be substituted); m is O or 1; n is 0, 1 or 2; X is CH or N; A is a bivalent straight or branched chain hydrocarbon residue having 1 to 7 carbon at...

A digital signal interpolator arrangement for interpolating an input digital signal to derive an output digital signal having a different sample rate comprises a cascaded series of multi-tap interpolation filters (15F, 16F) each having a plurality of selectively dynamically assignable tap sets, for each interpolation filter (15, 16), a circuit (12, 15R; 14, 16R) to select and assign a tap set ther...

A silicone elastomer is obtainable by condensation of polydimethyl- and/or methylhydrosiloxane diols with a methylphenylsilicone polymer in the presence of reactive compounds of silicon, boron or nitrogen. The methylphenylsilicone polymer has a total content of phenyl groups of from 3% to 25% by weight and a molecular weight of from 150,000 to 800,000. The elastomer is non-vulcanisable and has hyd...

A conveyor for use in carrying a cardboard blank 4, or similar item, successively to a series of machine stations, comprises a toothed belt 18 arranged around a pair of toothed wheels to be driven by at least one of the wheels; the inner face of one run of the belt between the wheels being supported by an air extraction duct 37 the interior of which is connected to air extraction means; and the ou...

A multidisk containing player comprises: a playing device including a turntable, a pickup, and a disk clamp mechanism, the playing device being provided within a player housing, a magazine accommodating a plurality of disks and being removably mounted on a mounting portion as installed within the player housing, and a transfer mechanism for transferring the playing device toward a disk to be playe...