Abstract: Colloidal metal conjugates can be produced in high concentrations suitable for direct use, for example, in immunoassays. The colloidal metal conjugates can be used in devices for qualitative, semi-quantitative, or quantitative determination of the presence of compounds in samples, including biological samples.

Abstract: A bingo dauber configured to receive the finger of a user such that the bingo dauber is worn on and controlled by the finger of the user. At least one opening in the bingo dauber is configured to receive a finger (e.g., index finger) which extends into a finger receiving channel and groove arrangement, or finger insert defining a finger receiving channel, allowing the bingo dauber to be used quickly with a single finger while reducing or eliminating fatigue associated with gripping a conventional ink dauber. The bingo dauber includes an ink reservoir and porous membrane for dispensing ink onto a bingo card.

Abstract: A non-volatile storage device on a memory module comprising a plurality of memory devices is used to store the locations of defective parts on the memory module, such as data query (“DQ”) terminals, identified during a testing procedure. After testing, the non-volatile storage device, such as an electrically erasable programmable read only memory (“EEPROM”), may be accessed to determine specific memory devices such as dynamic random access memory (“DRAM”) which need to be repaired or replaced rather than re-testing the specific memory module.

Abstract: Colloidal metal conjugates can be produced in high concentrations suitable for direct use, for example, in immunoassays. The colloidal metal conjugates can be used in devices for qualitative, semi-quantitative, or quantitative determination of the presence of compounds in samples, including biological samples.

Abstract: A non-volatile storage device on a memory module comprising a plurality of memory devices is used to store the locations of defective parts on the memory module, such as data query (“DQ”) terminals, identified during a testing procedure. After testing, the non-volatile storage device, such as an electrically erasable programmable read only memory (“EEPROM”), may be accessed to determine specific memory devices such as dynamic random access memory (“DRAM”) which need to be repaired or replaced rather than re-testing the specific memory module.

Abstract: Disclosed is a test cell and a method for detection of a preselected ligand in a liquid sample such as a body fluid. The test cell includes an elongate outer casing which houses an interior permeable material capable of transporting an aqueous solution and defining a sample inlet, a test volume, and a reservoir volume. The reservoir volume is disposed in a section of the test cell spaced apart from the inlet and is filled with sorbent material. The reservoir acts to receive liquid transported along a flow path defined by the permeable material and extending from the inlet and through the test volume. In the test volume is a test site which includes a first protein having a binding site specific to a first epitope of the ligand immobilized in fluid communication with the flow path. The test site can be observed through a window of the casing.

Abstract: Disclosed is a test cell and a method for detection of a preselected ligand in a liquid sample such as a body fluid. The test cell includes an elongate outer casing which houses an interior permeable material capable of transporting an aqueous solution and defining a sample inlet, a test volume, and a reservoir volume. The reservoir volume is disposed in a section of the test cell spaced apart from the inlet and is filled with sorbent material. The reservoir acts to receive liquid transported along a flow path defined by the permeable material and extending from the inlet and through the test volume. In the test volume is a test site which includes a first protein having a binding site specific to a first epitope of the ligand immobilized in fluid communication with the flow path. The test site can be observed through a window of the casing.

Abstract: Disclosed is a test cell and a method for detection of a preselected ligand in a liquid sample such as a body fluid. The test cell includes an elongate outer casing which houses an interior permeable material capable of transporting an aqueous solution and defining a sample inlet, a test volume, and a reservoir volume. The reservoir volume is disposed in a section of the test cell spaced apart from the inlet and is filled with sorbent material. The reservoir acts to receive liquid transported along a flow path defined by the permeable material and extending from the inlet and through the test volume. In the test volume is a test site which includes a first protein having a binding site specific to a first epitope of the ligand immobilized in fluid communication with the flow path. The test site can be observed through a window of the casing.

Abstract: A CATV system uses a single single-mode optical fiber for transmitting a composite optical signal containing television signals in different frequency channels for a plurality of subscriber terminals from a headend terminal to a distribution terminal, and converts the transmitted signals at the distribution terminal into electrical signals for distribution to a plurality of subscriber terminals over a plurality of coaxial cables. The distribution terminal further receives electrical service request signals from each of the plurality of subscriber terminals, and converts each received service request signal into an optical service request signal for transmission to the headend terminal over the same single-mode optical fiber as used from transmitting the composite optical signal. Wavelength-division multiplexer/demultiplexers couple the optical fiber to the headend terminal and the distribution terminal to enable bidirectional transmission.

Abstract: Between the spaced biasing electrodes of a thermal radiation imaging device A D.C. bias source is connected to cause the flow of a bias current in the device body which is preferably of n-type cadmium mercury telluride. The bias current supports an ambipolar drift of radiation-generated minority carriers (holes) in the opposite direction. The device is operated in a system in which the radiation pattern is scanned across the device body in the same direction and at the same rate as the ambipolar velocity. Instead of having a single read-out electrode, a more sophisticated system with better performance is obtained by distributing between the spaced biasing electrodes a plurality of read-out electrodes each of which forms a Schottky barrier or p-n junction with the body material.

Abstract: The present invention pertains to an asymmetrical bidirectional optical communication system of the type comprising a central station, a plurality of user stations, and a plurality of bidirectional optical transmission paths, one of which connects the central station and one of the user stations. The central station is provided with a laser for initiating in the optical transmission path the propagation at a wavelength in the 1100-1700 nm window of a single-mode signal. Each user station is provided with a light source which initiates in the optical transmission path the propagation at a wavelength in the 700-950 nm window of a few-mode signal. Each optical transmission path comprises an optical fiber having transmission characteristics such that the single-mode signal propagates with a total dispersion less than 5 ps/km-nm and the few mode signal propagates with a bandwidth greater than 1 GHz-km.

Abstract: A dispersion transformer for limiting the data rate of an optical fiber transmission system. A transmission optical fiber, which connects a transmitter and a receiver, may have a bandwidth much greater than that necessary to transmit a desired predetermined maximum data rate. The transmitted signal is connected to wavelength disperser means which spatially separates the different wavelength components of the transmitted signal. Each wavelength component is then propagated with a different delay by optical fiber delay means. The wavelength component which propagates with the least delay through the transmission optical fiber is subjected to the least induced delay in the optical fiber delay means and that which propagates with the greatest delay through the transmission optical fiber is subjected to the greatest induced delay in optical fiber delay means, the remaining components being subjected to intermediate delays. The delayed wavelength components are combined to form a series of broadened optical pulses.