Abstract: A differential plane mirror interferometer comprises a source (10) which emits a light beam containing two orthogonally polarized components of different frequencies; a source of a stabilized electrical reference signal (11) of a frequency corresponding to a difference frequency between the two components of the light beam; a tilted parallel plate (16) having regions of reflection, antireflection and polarization coatings for converting the input beam into two separated, parallel, orthogonally polarized beams; a half-wave retardation plate (29A, 29) located in one of the separated beams for converting the two separated, parallel, orthogonally polarized beams into two separated parallel beams with the same polarization; means including a polarizing beamsplitter (44), for causing each of the separated parallel beams with the same polarization to be reflected twice by one of two plane mirrors (71,70) to produce two parallel output beams with the same polarization; a half-wave retardation plate (29B, 29) located

Abstract: A method of playing a fish swallowing game comprises the steps of placing a hollow fish shaped receptacle (10) in water, with the receptacle (10) having a mouth opening (16) which is placed in water so as to be partly depressed below the level (22) of the water and at an angle with respect thereto for collecting water therethrough. The opening (16) is partly depressed for ensuring that the water level (24) of any collected water flowing into the receptacle (10) will be below the water level (22) of the water in which the receptacle (10) has been placed for creating a waterfall effect flow (28) of collected water from the water level (22) of the water in which the receptacle (10) has been placed to the water level (24) of any collected water in the interior (14) of the receptacle (10). The opening (16) has a diameter slightly larger than the diameter of the fish shaped objects (12) in the water so as to limit the collection of the objects (12) to one at a time through the opening (16).

Abstract: Compounds are disclosed of the general formula I ##STR1## wherein R.sub.1 is a group of the formula IIR.sub.3 --X-- IIwherein R.sub.3 is alkyl; phenyl; phenyl substituted with halogen, lower alkyl, hydroxy, lower alkoxy, or phenoxy; phenyl-lower alkyl in which the phenyl group may be substituted with halogen, lower alkyl, hydroxy, lower alkoxy, or phenoxy; phenyl-lower alkenyl in which the phenyl group may be substituted with halogen, lower alkyl, hydroxy, lower alkoxy or phenoxy; and X is oxygen or sulfur; or R.sub.1 is a group of the formula III ##STR2## wherein R.sub.4 has the same meaning as R.sub.3 as defined above; or R.sub.4 is a group of the formula IV ##STR3## wherein R.sub.7 has the same meaning as R.sub.3 as defined above; or R.sub.7 is an aromatic 5- or 6-membered heterocyclic ring containing one or two heteroatoms selected from the group consisting of nitrogen, oxygen, and sulfur; and wherein R.sub.5 and R.sub.6 are the same or different and each represent hydrogen or have the same meaning as R.

Abstract: A pyrone-3-carboxamide compound of the formula (I): ##STR1## in which R.sub.1 is an alkyl group, and R.sub.2 is an alkyl group or a halogen atom, which is useful as a medicine and an agricultural chemical or an intermediate thereof.

Abstract: A compounds of the general formula (I): ##STR1## wherein R.sup.1 is alkyl, lower alkenyl, lower alkynyl, aralkyl, haloalkyl, lower alkoxy-lower alkyl, lower alkylthio-lower alkyl or lower alkoxycarbonyl-lower alkyl group; R.sup.2 is aryl group which may be substituted by one or more groups of halogen atom, lower alkyl, lower alkoxy, lower alkoxycarbonyl, trifluoromethyl, cyano and nitro group; R.sup.3 and R.sup.4 are, the same or different, lower alkyl, aralkyl, haloalkyl or cycloalkyl, or aryl group which may be substituted by one or more groups of halogen atom, lower alkyl, lower alkoxy, trifluoromethyl, cyano or nitro group; R.sup.5 is hydrogen atom, halogen atom, lower alkyl, phenyl which may be substituted or aralkyl which may be substituted; or R.sup.4 and R.sup.5 may be combined to form a group of --(CH.sub.2).sub.n - in which n is 3 or 4, or its 1-oxide or addition salt. which is useful as a plant growth inhibitory agent.

Abstract: A process for concentrating gold and/or uranium minerals by rendering the nonmagnetic minerals magnetic or weakly magnetic by causing a coating to form on the surfaces of the minerals. The gold and/or uranium are concentrated by use of a gravity-magnetic separator or a suitable high intensity magnetic separator.

Abstract: A process for preparing trichloromelamine starting from chlorine and melamine, with intermediate formation of an aqueous suspension of hexachloromelamine, characterized in that hexachloromelamine is solubilized by addition of a water-immiscible solvent, the aqueous phase is separated and the hexachloromelamine solution is brought into contact, in the presence of an activator, with a number of melamine moles which is equal to or lower than the number of moles of the remaining hexachloromelamine.

Abstract: The invention relates to a method of enhancing or regulating the host defense of a mammal, said method comprising administering to a mammal a therapeutically effective amount of hyaluronic acid.

Abstract: A modular trowel assembly (10) comprises a resilient substantially planar blade member (12) and a handle member (14) slidably mountable thereon. The blade member (12) contains an aperture (16) defined by a pair of spaced apart longitudinally extending integral resilient tangs (20, 22). The handle member (14) slidably receives the tangs (20, 22) therein in slots which serve to resiliently bias the tang (20, 22) when it is inserted for rigidly securing the mounted handle (14) to the blade (12) in the complete assembly (10). The blade member aperature (16) further comprises an integral resilient locking tab (30) disposed at each end for cooperating in permanently securing the mounted handle (14) to the blade 12, with the mounted handle (14) in cooperation with the resilient tangs (20, 22) reinforcing the rigidity of the blade (12) in the assembly (10).

Abstract: An auto-focus single-lens reflex camera in which manual focusing can be conducted using a manual focusing member provided on the focusing lens (7), in addition to the switching over of the operation mode between auto-focusing and manual focusing, by providing means for judging whether the amount of shift of the position of a point at which the image of the subject is formed is within a focused range, the amount of shift being detected in the camera body in the auto-focusing mode, and by engaging a normally disengaged lens side drive means (2,3,4,5) and camera side autofocus drive means (8,9,10,11,13) through a clutch member (14) controlled by the judging means, with the autofocus drive means being engaged with the lens drive means only when it is necessary to drive the autofocus motor, a compression spring (12) normally disengaging the camera side drive means from the lens side drive means until the clutch is enabled to overcome the resilient force.

Abstract: A microprocessor based camera information transmission system capable of electrically transmitting various information on a plurality of different camera accessories from the accessory (Y) to the camera body (X) with the accessory information being selectively provided to the camera body microprocessor (MCP) via a data input register (SR1) in response to the decoded clock output (SR2) from the microprocessor (MCP) for sequentially and serially providing a synchronized serial bit pattern to the microprocessor, (MCP) via the data input shift register (SR1) in accordance with a detected accessory identification code. The camera body (X) includes a flip-flop (FF) and counter (CO) which cooperate with the microprocessor clock to synchronize the serial bit pattern and to provide the corresponding identification code (S1-SN) from the accessory (Y) to the microprocessor (MCP) to set the quantity content of the microprocessor for that accessory (Y).

Abstract: A toothpaste containing at least 60% sodium bicarbonate particles as the sole abrasive, at least 30% of the sodium bicarbonate having particle sizes of less than 25 microns. Humectants, thickening agents, fluoridating agents, flavors, sweeteners and other conventional adjuvants may also be included in the toothpaste.

Abstract: An electronic device for rapidly tuning a voltage controlled oscillator to the radar carrier frequency of each of the individual radar pulses. A frequency discriminator (1) of the quadricorrelator type is supplied with the incoming pulses and with the output of the VCO (5) to provide the control voltage to the VCO (5) via amplifying stages (2), (4) and a sample-and-hold circuit (3) that maintains the tuned frequency for time durations greater than 100 usec. The operating frequency range of the device is between 6GHz-18GHz.

Abstract: A receptacle for releasably attaching an umbrella having a bulb type handle to an article such as a golf buggy. The receptacle has several upstanding forked petals capable of resilient radial deflection and a locking ring capable of maintaining the petals in a closed position about the bulb of an umbrella handle.

Abstract: The present invention is of a paper transferring apparatus for a copying machine which consists of a pair of upper and lower resist rollers and a pair of upper and lower pre-transfer rollers located at a photoreceptor-drum side from these resist rollers, andthe upper roller out of the paired upper and lower resists rollers has a substantially larger roller diameter at the center part in the axial direction of the roller in comparison with that at the both ends, and the lower roller thereof has a uniform roller diameter throughout the roller, andthe upper roller out of the paired upper and lower pre-transfer rollers has a substantially smaller roller diameter at the center part in the axial direction of the roller in comparison with that at the both end parts, and the lower roller thereof has a uniform roller diameter throughout the roller.

Abstract: An angle measuring interferometer comprises a source (10) which emits a light beam containing two orthogonally polarized components of different frequencies; a source of a stabilized electrical reference signal (11) of a frequency corresponding to a difference frequency between the two components of the light beam; means, such as a tilted shear plate (16) or a beamsplitter/beam folder assembly (116, 116A) for converting the input beam into two separated, parallel, orthogonally polarized beams; a half-wave retardation plate (29A, 29) located in one of the separated beams for converting the two separated parallel orthogonally polarized beams into two separated parallel beams with the same polarization and frequency difference; means including a polarizing beamsplitter (44), for causing each of the separated different frequency parallel beams with the same polarization to be reflected once by each of two plane mirrors (71, 70) to produce two parallel output beams with the same polarization; a half-wave retardati

Abstract: A common channel video communication system for providing a piggy back transmission television field comprising a plurality of television video scan lines over the common channel. The television field is comprised of both at least one video displayable row of video data characters contained in a pseudo video scan line occupying one of the plurality of television video scan lines and normal television video displayable information occupying the balance of the plurality of the television video scan lines. The common channel provided piggy back transmission television fields enable the provision of conventional television as well as real time updateable row grabbed information.