The circuit includes a content addressable memory (CAM) storing addresses of faulty elements in a principal memory (MP). In use, incoming addresses (ADD) are compared with defective addresses stored in the content addressable memory (CAM) and where identical they are readdressed to a redundant memory (MR). Where the principal memory (MP) has no defects time may be saved by using an inhibiting circ...

The invention provides oligoribonucleotide derivatives represented by the general formula: wherein m, B, Q, X, R, Y1, Y2 and X are as defined in the specification. These derivatives inhibit the proliferation of the AIDS virus.

Compounds of formula (1) and their salts, wherein R<1> is a methyl, ethyl or isopropyl group each substituted by a hydroxyl group or R<1> is a group -(CH2nR7 or a group -CH(CH3)R<7> (where n is zero or 1 and R<7> is CHO or CO2H); Y<1> is -CH2-, Y<2> is -CH- and X represents [where R<2> is a hydrogen atom or a group OR<8> is a hydroxyl group or a substituted hydroxyl group having up ...

PCT No. PCT/GB90/01051 Sec. 371 Date Dec. 31, 1991 Sec. 102(e) Date Dec. 31, 1991 PCT Filed Jul. 6, 1990 PCT Pub. No. WO91/01023 PCT Pub. Date Jan. 24, 1991.A fault tolerant data storage system comprises an array of memory chips having a plurality of rows and columns, each row of memory chips CO to CN having a spare chip CS. Each chip comprises an array of memory locations some of which may be fau...

Disclosed is a housing for a semiconductor device improved not to cause thermal distortion. The housing is formed on an A l -Si compound material and includes a housing member having a space for housing the semiconductor device. Occlusion gas contained in the A l -Si compound material is removed such that at least nitrogen gas in the occlusion gas is 0.1 percentage by weight or less. Since the hou...

Ether lipid nucleoside covalent conjugates and derivatives thereof are disclosed, along with pharmaceutical compositions containing the same and methods of using the same to combat HIV-1 infections. Illustrative are 3'-Azido-3'-deoxythymidine-5'-monophosphate-D,L-3 octadecanamido-2-ethoxypropane and 3'-Azido-3'-deoxythymidine-5' butyrate- gamma -N,N,N-trimethyl-ammonium- beta -(1-phospho-2-ethoxy-...

A drive control apparatus for a thermal head, capable of controlling application energy given to heater elements in the thermal head on the basis of not only history information of a present heater element but also print information including print history information of heater elements adjacent to the present heater element. A print information processing is carried out based on the print history...

It is proposed, in accordance with the invention, that a pressurized water purifier which includes an inlet conduit, a pressure-elevating pump mounted in the inlet conduit, a filter or membrane type purifying unit, a purified-water outlet conduit and a reject conduit for concentrated contaminated water that the reject conduit (22) includes a pressure-limiting valve (28) which is controlled by the ...

An improved fiber reinforced glass composite includes a boron nitride-coated refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.7 to 1.8. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached ...

A reverse osmosis assembly incorporates a filter module to separate incoming raw water into filtered pure water (permeate) and unfiltered water containing concentrated residues (concentrate). The assembly also incorporates tubes returning surplus permeate to the raw water inlet, and tubes returning a variable proportion of the concentrate to the raw water inlet. The unused portion of the concentra...

New nucleic acid cpds. contg. a non-nucleic acid ring skeleton to which two functional gps. are bound at a fixed distance and which also point in essentially the same direction, and attached to these functional gps. is a pair of nucleotide chains.

A housing for a digital IC has (a) a single layer substrate with a preselected pattern of vias (22,25) and bearing lines which extend from bond wiring and flip-chip connections to the vias (22) for producing electrical contact between them; (b) a protective structure arranged such that the vias (22,25), the lines, the wire bond connections, one or more bond wires and one or more support plates (30...

A crystalline alpha-maltose with an alpha-maltose isomer content of 55% or higher is prepared by the process comprising preparing a high-concentration syrup, with a moisture content lower than 10 w/w %, from a high-purity maltose with a maltose content of 85% or higher; crystallizing alpha-maltose from the syrup at a temperature within the range of 50 DEG -130 DEG C. in the presence of seed cryst...

The derivatives correspond to the formula: in which B denotes a radical derived from guanine, cytosine or adenine in which the exocyclic NH group is protected by the group with R<1> denoting a hydrogen atom or an alkyl radical and R<2> denoting a hydrogen atom, an alkyl radical, an alkoxy radical or an optionally substituted aryloxy radical, R<3> denotes a hydrogen atom, the di...

The present invention is directed to methods of reducing the degree of inflammation arising from a secondary immune response in a mammal due to antigen exposure (challenge) by the administration of valienamine-related disaccharide compounds and the pharmaceutical compositions employed in the method.

Methods and apparatus (12-102) for performing diagnostic ultrasound simultaneously with the application of therapeutic ultrasonic waves are disclosed. The methods and apparatus (12-102) are particularly advantageous in performing ultrasonic imaging of a region of a patient while simultaneously applying therapeutic ultrasonic waves to the region for the purpose of rupturing vesicles administered to...

Novel substituted liposaccharides useful in the prophylactic and affirmative treatment of endotoxemia including sepsis, septicemia and various forms of septic shock and methods of using these agents are provided. Also provided are method of preparing these agents and intermediates useful therein.

Amphiphilic derivatives of amino acids or peptides are provided, comprising a polyhydroxylated hydrophilic part derived from a sugar, from a polyol, from an aminopolyol or from an oligosaccharide, and at least one hydrophobic part derived from a hydrocarbon, fluorocarbon, or a mixed fluorocarbon/hydrocarbon, saturated or unsaturated, having from 5 to 20 carbon atoms, the hydrophobic part(s) being ...

PCT No. PCT/NL93/00169 Sec. 371 Date May 4, 1995 Sec. 102(e) Date May 4, 1995 PCT Filed Aug. 11, 1993 PCT Pub. No. WO94/04545 PCT Pub. Date Mar. 3, 1994Triantennary cluster glycoside, wherein each glycoside residue is attached to the branching point of the cluster by a spacer of a long, flexible, hydrophilic chain comprising at least 4 atoms in the chain. The glyciside spacer preferably comprises ...

Platinum compounds useful in the treatment of cancer are disclosed. Compositions containing these compounds and methods of using the same are also discussed. Compounds having the formula (I) wherein n is 0 or 1 and when n is 1 R1 is H or C1-C4 alkyl, R is non-substituted higher alkyl or mono or disaccharide or a derivative of a mono or disaccharide, when n is O, R1 is H or C1-C4 alkyl, R...