Abstract: A waveform synthesizer includes a data memory, an address manager, an interface and a pulse generator. The data memory has a pulse-width value storage for storing values obtained from sampling a low frequency periodic waveform at a high sampling rate. These values stored in the storage can be scaled in response to a requested magnitude by a scaler within the data memory, thereby generating a look-up table with a series of addresses. The address manager includes an address generator and an address incrementer. The address generator generates address codes for accessing the look-up table through the series of addresses. The address incrementer then adjusts the magnitude of the address increments in response to requested frequency input from the interface. The address increments are proportional to the frequency so that when the requested frequency is high, the address increments are large and more addresses are skipped over between retrieve operations.

Abstract: A method of causing somatic cell hybridization between two species of non-filamentous algae by growing somatic algal tissue from each of the two species of algae in close proximity, in a nutrient solution, and isolating and culturing the hybrid somatic shoots that form.

Abstract: Methods of separating and classifying the relative amounts of two or more classes of hydrocarbon molecules in a sample are disclosed wherein an input stream comprising a mobile phase and the sample is injected into a chromatographic column, and an effluent stream exiting a chromatographic column is split into a first effluent stream and a second effluent stream. The mass of carbon in each of the classes of hydrocarbons in the first effluent stream is determined, preferably using a flame ionization detector, and the second effluent stream is directed through a variable restrictor, allowing the pressure and mass flow rate of the input stream to be independently controlled and improved results obtained. In a preferred embodiment the present invention also includes identifying the hydrocarbon molecules in the second effluent stream in order to verify the analysis or provide additional data, preferably by using an ultraviolet detector.

Abstract: The invention provides an apparatus and method for determining levelling power of an electrolyte. An anode and cathode are immersed in the electrolyte. The cathode has a plating surface for electrodeposition of a metal from the electrolyte. The plating surface has a peak region and a base region separated and electrically isolated by an insulator. The peak region has a greater tendency to electrodeposit the metal per unit surface area than the base region. The anode and cathode are placed in a test cell or suspended in a commercial electrodeposition cell. A means for applying current between said anode and said cathode is used for causing the metal from the electrolyte to electrodeposit on the plating surface of the cathode. The current from plating on the peak region and the base region are measured separately to determine levelling power of an electrolyte.

Abstract: The invention provides an apparatus and method for determining levelling power of an electrolyte. An anode and cathode are immersed in the electrolyte. The cathode has a plating surface for electrodeposition of a metal from the electrolyte. The plating surface has a peak region and a base region separated and electrically isolated by an insulator. The peak region has a greater tendency to electrodeposit the metal per unit surface area than the base region. The anode and cathode are placed in a test cell or suspended in a commercial electrodeposition cell. A means for applying current between said anode and said cathode is used for causing the metal from the electrolyte to electrodeposit on the plating surface of the cathode. The current from plating on the peak region and the base region are measured separately to determine levelling power of an electrolyte.

Abstract: Method for producing single crystals of YBa.sub.2 Cu.sub.3 O.sub.7 which undergo a transition to the superconducting state above 90K, comprising:(a) preparing a flux composition by mixing BaO.sub.2 and CuO powders in the molecular weight ratio of approximately 1:1, layering on top of the mixture powdered YBa.sub.2 Cu.sub.3 O.sub.7 in an amount up to approximately 20% of the total weight of the BaO.sub.2 --CuO mixture, firing the mixture in air at approximately 930.degree. C.-950.degree. C. for approximately 24 hours, and thereafter raising the temperature from 930.degree. C.-950.degree. C. to approximately 1025.degree.-1030.degree. C. within 1/2 hour and maintaining the temperature at approximately 1025.degree. C.-1030.degree. C. for approximately one hour to one and one-half hours;(b) cooling thereafter the flux to approximately 1020.degree. C.-980.degree.;(c) providing an oxygen gas flow to the flux when the temperature is approximately 1020.degree. C.-980.degree. C.