Abstract: There is provided a method to overcome or decrease the antagonistic interaction caused by the application of an acetohydroxyacid synthase-inhibiting herbicide in combination with a non-acetohydroxyacid synthase-inhibiting herbicide such as dicamba, 2,4-D, bromoxynil, atrazine or bentazone, which comprises applying an effective amount of imazapyr (2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid).

Abstract: This invention relates to sensitive or classified documents utilizing specially prepared paper containing a unique substance which will, in the presence of sensors incorporated within a document copier which constantly monitor the field of view for the presence of this unique substance, interrupt the operation of this document copier. Within the copier housing, adjacent the illumination and optical apparatus, a lens gathers some of the reflected light from a document to be copied. This light is then passed through three (3) narrow band spectral filters to three (3) associated detectors. Subsequent circuitry responds to the detected light at the predetermined wavelengths, if present, and, when appropriate, interrupts the operation of the copier and/or sounds an alarm or triggers a camera.

Abstract: To record a composite picture on a film, a projection objective inserted between a movable transparency support and a pair of large-diameter planoconvex field lenses produces an aerial image of a slide, mounted on the support, in the region of the field lenses, preferably just beyond the more rearwardly positioned field lens. A varifocal objective disposed to the rear of the field lenses has a stationary front component with a natural entrance pupil fully illuminated by the diverging light cones from all the points of the aerial image, this varifocal objective forming part of a zoom camera enabling the magnification ratio between the slide and its image on the camera film to be varied in a range of at least 6:1.