2116676 9305162 PCTABS00020 A method for facilitating the transfer of nucleic acids into cells comprising preparing a mixed lipid dispersion of a cationic lipid with a co-lipid in a suitable carrier solvent. The lipid has a structure which includes a lipophilic group derived from cholesterol, a linker bond, a spacer arm including from about 1 to about 20 carbon atoms in a branched or unbranched li...

Novel methods of decreasing the concentration of hydroxyl ions in an electrochemically generated alkaline peroxide aqueous solution consisting of partial neutralization of a stabilized solution of alkaline hydrogen peroxide, electrodialysis, and dialysis of an aqueous solution of alkaline hydrogen peroxide. The methods of the invention can be performed at ambient temperature and pressure.

The present invention involves a buffing apparatus (10) which enables faster and more uniform buffing of tire casings (2) prior to application of replacement treads. In particular, a buffing apparatus for preparing a tire casing for retreading includes a tire casing rotating assembly (16). This assembly includes a system for mounting the casing in a vertical plane and for rotating the tire casing ...

A safety shield for use in laparoscopic or like electrosurgical procedures where the shield surrounds the active electrode and extends from a trocar or the like to the field of view of the surgical procedure. The shield is connected to the return lead via a low impedance path which includes monitor circuitry for determining whether the shield current is associated with an abnormal condition.

Device (1) for connecting an enteral nutrition tube (7) to a nutrient composition container and having a neck (8A-8D), of the type comprising a transverse closure wall (4) and a skirt (3) forming with said wall a plug adapted to be fixed to said neck (8A-8B), characterized in that it is independent of the tube (7), in that the transverse closure wall comprises a reduced thickness area (5) adapted ...

The method concerns preparing a contact material constituted by silver and tin oxide. According to the invention the method comprises the following steps: preparing an aqueous solution containing dissolved silver nitrate and tin oxide particles in suspension, with the size of said particles measured in terms of specific surface area using the BET method lying between about 2 m2/g and 6 m2/g; causi...

A description is given of an apparatus for transporting away sealed insulating glazing units (1) by a conveying mechanism (3, 14), there being assigned in the region of the incoming end (10) and of the outgoing end (11) of the conveying mechanism pick-up devices (12), preferably such devices with two video cameras each, which produce images of the corners (4, 5, 6, 7) of the insulating glazing uni...

A closed cell, rigid, polymer foam comprising the reaction product of a polyisocyanate and an isocyanatereactive compound in the presence of (a) a foaming agent, (b) at least about 2 percent by weight of carbon black, based on the weight of the polymer in the foam, and (c) a capped polyoxyalkylene compound which helps bring about a uniform dispersion of the carbon black throughout the foam so that...

A process for producing a thermoplastic polyester resin foam comprising melting a thermoplastic polyester resin, mixing the molten resin with a blowing agent and extruding the mixture into a low-pressure zone to carry out expansion molding, characterized in that a compound having two or more acid anhydride groups per molecule, optionally together with a compound of a metal of Group I, II or III el...

A measuring apparatus of the present invention measures the constituent concentration of a specimen after loading into the apparatus a test piece having a test material which develops coloring as a result of a reaction with the constituents of a specimen. When the apparatus detects that the test piece having the test material has been loaded, it automatically begins to measure the constituent conc...

PCT No. PCT/GB92/01351 Sec. 371 Date Mar. 25, 1994 Sec. 102(e) Date Mar. 25, 1994 PCT Filed Jul. 23, 1992 PCT Pub. No. WO/9303255 PCT Pub. Date Feb. 18, 1993.A tubing test valve (34, 34a) is described for use with a drill string (20) for pressure testing tubulars and downhole equipment, particularly in a cased hole (12) which has a permanent packer (16) fitted. The valve (34) permits self-filling ...

In a well (1) which is to be equipped for production from an underground deposit, a lining tube or casing (2) is lowered, which casing comprises a set of tubular sections connected in succession to each other by means of tubular connectors (3), at least some of which are modified, and it is cemented once installed in the well. These special connectors (3) comprise housings (5, 7) for one or more s...