An ultrasonic transducer element (l30) is supported by a member (l20). The transducer element and the supporting member are disposed within a casing (l00) filled with ultrasonic wave propagation medium (l50). At least part of the casing forms an ultrasonic wave transmission window. In a first case, the supporting member (l20) is rotatable about a first axis (A) and about a second axis (B), and the...

1. Apparatus for signal transmission from a rotating element to an element which is stationary with respect to the rotating element, particularly from a wheel of a vehicle to the vehicle. 2.1 In known devices, a toothed ring which rotates with the vehicle wheel is scanned by a sensor and a first sensor signal corresponding to the speed of the vehicle wheel is generated. A second sensor signal is g...

A data processor (11) executes a table look-up and interpolate instruction which retrieves two adjacent table values from memory, interpolates between them and stores the result in a register. The same register contains, prior to the execution of the instruction, a value which is used both in calculating the address in memory from which the values are obtained and in performing the interpolation c...

A super-scalar processor is disclosed wherein branch-prediction information is provided within an instruction cache memory. Each instruction cache block stored in the instruction cache memory includes branch-prediction information fields in addition to instruction fields, which indicate the address of the instruction block's successor and information indicating the location of a branch instruction...

An automatic injector is disclosed having a body (1), a medicament chamber (19) defined in the body, a needle (11) held in a sheathed position within the body, releasable drive means (4) which when released drives the needle from its sheathed position to an unsheathed position, and expulsion means (5, 10) for discharging the medicament through the needle (11), characterised in that seal means (12)...

The natural stereochemistry at the 13-position of avermectin aglycones, normally alpha -oriented or below the plane of the molecule, is inverted or epimerized into the beta -position. The procedure starts with the avermectin aglycone compounds where the 13 alpha -hydroxy group is substituted with a leaving group. Treatment of the substituted compound with tetra alkyl ammonium nitrate displaces t...

The invention provides a method of operation of a stable memory circuit having two stable memory banks (bank 0, bank 1). Each bank may comprise one or more VRAMs (1). A stable memory operation involves writing from a source location (6) in a VRAM to a temporary location (5) in the same VRAM and subsequently writing the data from the temporary location (5) to a destination location (10) in the same...

Process which comprises reacting sucrose with a di(hydrocarbyl)tin oxide in an inert organic reaction vehicle with removal of water for a period of time and at a temperature sufficient to produce a 1,3-di-(6-O-sucrose)-1,1,3,3-tetra(hydrocarbyl)distannoxane.

A process which comprises extracting 1,3-diacyloxy-1,1,3,3-tetra(hydrocarbyl)distannoxane from a mixture containing 1,3-diacyloxy-1,1,3,3-tetra(hydrocarbyl)distannoxane, a sucrose-6-ester, and polar aprotic solvent, which process comprises the steps of: (a) contacting said mixture, in the presence of a small amount of water, with an organic solvent that is substantially immiscible with water to ...

A tablet containing dirithromycin Form II.

Novel processes, intermediates and reagents for the preparation of 3-substituted furanose or furanoside compounds of Formula I: wherein M is hydrogen or alkyl (C<5>-C<7>), A is halogen or A may be selected from a moiety of the formula: OR, SR, N<7>, SCR, OC-R or CN wherein R is hydrogen, branched or unbranched alkyl (C<5>-C<8>) or phenyl which compounds have antiviral and other biological a...

The present invention relates to highly diastereoselective processes for production of cis-nucleosides and nucleoside analogues and derivatives in high optical purity and intermediates useful in those processes.

The present invention relates to highly diastereoselective processes for production of cis-nucleosides and nucleoside analogues and derivatives in high optical purity and intermediates useful in those processes.

A recovery technique allows a computer program to be recovered from a program which has been infected with a computer virus. Prior to the program being infected, a unique fingerprint of the program is taken and stored along with data relating to the beginning portion of the program at a location separate from the program. A program thought to be infected is processed by generating a fingerprint of...

Avermectin compounds are substituted at the 4a-position: the 4a-methyl group is first derivatized with a hydroxy group which is then substituted with a variety of alkyl, alkoxy alkyl, or polyalkoxy alkyl groups and derivatives thereof. The compounds are potent antiparasitic and anthelmintic agents and compositions for such uses are also disclosed.

Sucrose 6-acylates, key intermediates in the preparation of sucralose, can be prepared by subjecting a sucrose alkyl 4,6-orthoacylate to mild aqueous acidic hydrolysis to provide a mixture of sucrose 4- and 6-acylates and then treating the mixture with a base to convert the 4- acylate to the 6- acylate. The novel sucrose alkyl 4,6-orthoacylates are prepared by reacting sucrose in solution or suspe...

There is disclosed herein a machine for performing nucleic acid amplification under computer control. The machine utilizes any one of a number of heating and cooling systems under control of a host computer which directs the heating and cooling systems to heat and cool a reaction-chamber-containing heat exchanger at appropriate times in the process. The reaction chambers are pre-loaded with the nu...

A wafer scale memory includes a wafer (13), a plurality of memory chips (10) arranged into rows and columns, address lines provided for the respective columns, N data lines (16) provided for the respective columns where N is an arbitrary integer, and common signal lines (15) provided for the respective columns. Each of the memory chips includes a data storage circuit (26) having a plurality of mem...

An integrated circuit memory is disclosed which includes redundant columns associated with a sub-array, and in which multiple input/output terminals are placed in communication with multiple columns in the sub-array in read and write cycles. The number of redundant columns per sub-array is less than the number of input/output terminals. A multiplexer connects the selected redundant column to a sel...

An information handling apparatus for transferring and composing image signals including a plurality of media sources configured to provide a corresponding plurality of image signals, a media bus connected to the media sources, and a media control module coupled to the media bus. The media bus allows selective access for the plurality of image signals. The selective access enables composition of t...