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 linear alkyl chain, and a cati...

FIELD: mechanical engineering. SUBSTANCE: pin with satellites and axle shaft differential gears engageable with this pin are arranged in housing. Locking satellite is located between axle shaft differential gears and is connected with one of them by means of tooth-type coupling. Internal gearing at gear ratio close to but not equal to one is formed by locking satellite with other axle shaft differ...

FIELD: mechanical engineering. SUBSTANCE: generator of wave friction gearing has heavy mass pressure rollers arranged in generator housing and guides with centrifugal flyweights. Guides are coupled with generator housing through resilient members for turning relative to housing. Axes of pressure rollers are located in on plane with axis of rotation of generator housing. EFFECT: enlarged operating ...

FIELD: acoustic methods of measurement and control of level of fluid in wells, holes and reservoirs. SUBSTANCE: method provides for radiation of acoustic probing pulse and for registration of signals reflected from sleeve joints of pipes and from fluid surface in well. In this case sleeves function as fixed reflectors- reference points. Depth of location of any sleeve is found in agreement with we...

A process is disclosed for manufacturing lead electrodes for accumulators. Lead grid elements (2, 3) are produced, provided with an active mass (5) and coated on both sides with glass microfibres (6, 7). In order to automate the process to a large extent, the introduction of the active mass and the coating with glass microfibres, which immediately follows the introduction of the active mass, are a...

PCT No. PCT/EP97/02018 Sec. 371 Date Mar. 9, 1998 Sec. 102(e) Date Mar. 9, 1998 PCT Filed Apr. 22, 1997 PCT Pub. No. WO98/01915 PCT Pub. Date Jan. 15, 1998A method and apparatus for producing lead storage batteries are provided. Essentially grid-shaped lead electrodes are produced and are provided with a pasty, active mass. Immediately thereafter separator material is provided on both sides of the...

A novel processor for manipulating packed data. The packed data includes a first data element D1 and a second data element D2. Each of said data elements has a predetermined number of bits. The processor comprises a decoder, a register, and a circuit. The decoder is for decoding a control signal responsive to receiving the control signal. The register is coupled to the decoder. The register is for...

FIELD: production of monodisperse spherical pellets. SUBSTANCE: method consists in dispersion of melt stream flowing from die under the effect of disturbance imposed on stream at optimal temperature of cooling inert gas purified from oxygen to the value of not in excess of 0.0001 mol.% and in collection of pellets after attaining the stationary mode of generation in outlet part of heat-exchange ch...

Molds for injection molding tire components have controlled temperature passages leading to a manifold surrounding each mold cavity. The manifold is positioned to minimize weld lines in the injected tire component. In addition, a narrow gate opening between the manifold and mold cavity provides an elevated temperature of the injected material for decreasing the curing time of the tire component in...

Automatic investigation of a measurement object whose image is a camera has at least two longitudinal edges bounding a reference surface involves illuminating it from different directions. Its image is acquired by a camera unit whose output signal is fed to an electronic evaluation unit. The object is either illuminated with undifferentiated light, and images taken for different zones, or illumina...

Disclosed are films, containers and container liners comprising a copolyester having repeat units from terephthalic acid and 1,4-cyclohexanedimethanol, and a hindered phenolic antioxidant.

A single-layer or multiple-layer foil of substantially reduced gas-permeability comprises at least one layer which consists, at least in part, of substantially thermoplastically processable starch. In order that this singlelayer or multiple-layer foil is at least approximately insensitive to moisture it is proposed that at least one layer comprises furthermore at least one hydrophobic polymer, suc...

An automated warehouse facility for improving the working efficiency of workers. The facility comprises a control system in which a file for working is provided in which codes are recorded for identifying articles to be received or issued, code signals each corresponding to articles retrieved from the aforesaid file and automated warehouse working mode signals are input, article-storing spaces of ...

A raw rubber lapping film comprising an ethylene. alpha -olefin random copolymer which comprises ethylene units and alpha -olefin units each having 4 to 20 carbon atoms, the molar ratio of ethylene units to the alpha -olefin units being from 80/20 to 95/5.

The invention relates to a method of atomizing molten metal and other liquids by disintegration of a preferably vertical tapping stream (5) of the liquid with the aid of preferably horizontal media streams (7, 8). Two streams (7, 8) of an atomizing medium having large vertical extension and horizontal direction of flow are formed by two separate, gap-shaped nozzles or rows of nozzles located at th...

Automatic gear changing in a mechanical stepped gearbox without clutch release in a motor vehicle involves the generation of a signal ( phi ) representing the torque transmitted in the gear box (6). This signal is driven to nil by the applied engine torque (M) being reduced so long as the signal is other than nil. Gear changing is executed when the signal has been driven to nil, thereby ensuring t...

Automatic gear changing in a mechanical stepped gearbox without clutch release in a motor vehicle involves the generation of a signal ( phi ) representing the torque transmitted in the gear box (6). This signal is driven to nil by the applied engine torque (M) being reduced so long as the signal is other than nil. Gear changing is executed when the signal has been driven to nil, thereby ensuring t...

Automatic gear changing in a mechanical stepped gearbox without clutch release in a motor vehicle involves the generation of a signal ( phi ) representing the torque transmitted in the gear box (6). This signal is driven to nil by the applied engine torque (M) being reduced so long as the signal is other than nil. Gear changing is executed when the signal has been driven to nil, thereby ensuring t...

FIELD: manufacture of thin walled products from fine grain cement reinforced with alkali glass roving. SUBSTANCE: method comprises impregnating glass roving with composition. The latter comprises, wt.%: microsilica, 10; portland cement, 85; 3-5 of superplasticizer at water to binder ratio of 0.5, impregnation being carried out prior to molding process. Addition of active addition agents (e.g. micr...

FIELD: organosilicon-based materials. SUBSTANCE: insulation nonflammable material composition contains organosiloxane rubber with linear-ladder structure, organosilicon cross- linking agent, and carbonate filler. Aluminum hydroxide, tin dialkyl dicarboxylate, and dispersed boron may also be included. EFFECT: provided nonflammability, reduced gas release, and increased stability of structure and sh...