摘要:
A screening system and method are disclosed for reproduction of images in printing. The screening angles that are used are close, but not identical to conventional screening angles. The reproduction is nevertheless Moire free by the fact that the deviations in angles from the conventional system are exactly offset by the deviations in line rulings. The screening system is particularly advantageous when used for combinations of screens with rational tangent angles. The Moire free combination of rational tangent screens can be rotated by a constant angle with the amount of rotation controlled in small increments.
摘要:
A method for determining the adequacy of a cervical or urethral test specimen collected for a chemical assay to detect the presence of Chlamydia trachomatis . Cells present in the specimen are disrupted to expose a substance present in or on C. trachomatis that is detectable by chemical reaction. In order to determine if the test specimen contains an adequate amount of the cervical or urethral cell type that serves as the host cell for C. trachomatis , the disrupted specimen is also reacted with a chemical reagent that produces a detectable response upon reaction with a substance present in or on columnar epithelial cells. The present invention therefore provides a control reaction that verifies the adequacy of the collected test specimen and thereby increases the confidence that a negative test result for the presence of Chlamydia indicates the absence of a C. trachomatis infection in the patient.
摘要:
A liquid crystal display (12) that minimizes disabling due to static electricity includes a rear polarizer and reflector (18), a front polarizer (30), and a display element (20,22) positioned between the rear polarizer and reflector (18) and the front polarizer (30). A transparent conductor (24) such as an indium tin oxide coating is deposited on the display element (20,22) between the display element and the front polarizer (30). The transparent conductor (24) is connected to electrical ground (26) to drain or dissipate any static electric charge applied to the display element (20,22). This dissipation of static electricity minimizes damage to the liquid crystal display (12) and disruption of the operation of the liquid crystal display (12).
摘要:
An aqueous solution of H₂ Blocker and an effervescent delivery system. Immediate and continuous relief is provided for from about 1 to about 3 hours, even when the administered composition contains less than about 25 percent of the dosage of H₂ Blocker prescribed for active duodenal ulcer.
摘要:
A heavy metal-free composition and its method of use in an ion selective electrode-based assay are disclosed. The heavy metal-free composition includes a borate compound and an alkalinity adjusting compound, and is used to dilute a test sample; buffer the test sample; and substantially reduce the affects of interferents present in the test sample on the ion selective electrode-based assay. The heavy metal-free composition and its method of use are especially useful in an ion selective electrode-based assay for carbonate ion concentration in a test sample, like blood serum, blood plasma, urine or cerebrospinal fluid.
摘要:
The present invention is directed to a simple and inexpensive liquid or dry reagent assay system for detecting nanomolar amounts of manganese in body fluids in microgram per liter concentrations. More specifically, the manganese assay of this invention is directed to the optical detection of a chromogenic reaction, such as the oxidation of a redox indicator, catalyzed by a manganese porphyrin complex.