Myocardial perfusion is assessed quantitatively using a suspension of insoluble gas filled microspheres. In such use: the myocardium is ultrasonically imaged; the suspension of pressure-stable, water-soluble gas-containing microspheres sized to pass through the pulmonary capillaries is injected intravenously; imaging is continued through the first transit of the microspheres through the myocardium...

Phosphoramidites of the formula where R is a base-labile protecting group, R<1> and R<2> are individually alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, or aryl of 6 to 20 carbon atoms or are joined together to form with the nitrogen atom a cyclic structure of 4-7 carbon atoms and 0 to 1 annular chalcogen atoms of atomic number 8 to 16, G is a hydrocarbylene group of 1 to ...

A method for selecting from a population of cells genetically transformed cells into which a desired nucleotide sequence has been introduced, wherein in the transformed cells the desired nucleotide sequence or a co-introduced nucleotide sequence induces or increases a positive effect of a compound or nutrient supplied to the population of cells, thereby allowing the transformed cells to be identif...

A Pressure vessel of fibre-reinforced plastic has an essentially cylindrical central portion (10) and two end portion (11, 12) and is preferably provided with a gas-tight liner (14). The central portion comprises a tangential winding (20) of the fibre material, in which the fibre material is oriented in an essentially tangential direction and an axial winding (21) of fibre material, located outsid...

An optical disc comprises two facing disc units at least one of which has a recording layer formed on its surface facing to the other disc unit. The disc units are bonded together by a layer of adhesive which may be a room-temperature curing thermosetting adhesive having a glass transition temperature higher than the upper limit of the range of temperatures of environments in which the disc may be...

In a vibration wave driven apparatus, a vibration member of a closed loop shape having at least one set of parallel straight portions is provided on one of the straight portions with a projection group in which in the driving frequency of the vibration member, the vibration mode is the 1st-order mode of the fixed end-free end vibration and on the other straight portion with a projection group in w...

A control device includes a memory storing a plurality of micro instructions. A modifying information generator generates modifying information. A modifying unit receives one of the micro instructions and the modifying information from the memory and the modifying information generator respectively. The modifying unit modifies at least part of the one of the micro instructions with the modifying i...

A method and apparatus for mixing and dispensing two different polymeric materials which react chemically with one another when combined by supplying each material to a common dispenser where the materials are mixed and dispensed, which method and apparatus is operative to maintain substantially steady state flow pressures of the materials at the inlets to the dispenser when flow is terminated suc...

Prodn. of a porous mineral light insulating plate comprises; (a) forming a binder slurry made of cement, ground quartz, hydrated lime and water in a colloidal mixer (1); (b) forming a foam in a foam producing unit (8) made of water, pressurised air and air pores former; (c) mixing the binder and foam to form a foam-concrete compsn.; (d) homogenising the compsn. using a static mixer (20); (e) placi...

Lightweight compressed gas cylinders are incorporated into a module (11) which contains manifolding (22) and which is designed for easy loading, unloading and transport on a flat-bed truck or other vehicle (51), particularly a roll-on roll-off transport truck, which is a specialized truck for mechanized handling of large containers. The module eliminates the need to retain the vehicle itself at th...

L'invenzione riguarda una composizione monomera indurente adattata per essere impiegata come rivestimenti di pavimentazioni e di superfici di calcestruzzo, che comprende a) un legante che comprende almeno un (met) acrilato di formula I (FORMULA I) in cui R, R1, R2 ed n hanno significati diversi, e b) almeno un componente scelto tra il gruppo comprendente carbon blacks ed oligomeri di poliestere-ur...

An optical probe for measurements, which is particularly suited to reduce noise in measurements taken on an easily compressible material, such as a finger, a toe, a forehead, an earlobe, or a lip. The probe includes a base having an aperture which leads to a chamber. The base is placed adjacent a portion of the material, the chamber being placed directly adjacent any easily compressible portion of...

Improved polymeric orthopaedic compositions are disclosed wherein sized, functional fibers are incorporated into a physiologically acceptable matrix. The compositions of the invention can be fabricated in the form of particulate powders adapted for reinforcment of bone cements, continuous media for such cements, and orthopaedic implant coatings. A complete implant attachment system is also provide...

Pannolino-mutandina del tipo comprendente uno strato esterno in materiale impermeabile, ed uno strato interno in materiale assorbente, comprendente, in corrispondenza di un'estremità, una coppia di ali in materiale elasticizzato provvisto, in prossimità del bordo esterno, di uno strato di adesivo e comprendente, dalla parte opposta, una coppia di bordi laterali previsti per farvi aderire la parte ...

A process is provided for obtaining an article which is made of a carbon-containing composite material and which is protected against oxidation. The composite material, which is obtained by densifying a porous fibrous texture with a matrix and which exhibits a residual internal porosity, is impregnated under a vacuum with an alkaline compound in a liquid solution. The article is dried and heat-tre...

Absorbent articles such as disposable diapers, incontinent pads, sanitary napkins and the like that have absorbent cores that are suitable for rapidly acquiring and containing liquid in an especially effective and efficient manner. The absorbent core comprises a storage layer comprising hydrophilic fibrous material and discrete particles of absorbent gelling material and having an acquisition aper...

A diamond-coated body is prepared by coating a dimaond film on the surface of a sintered body by means of vapor phase synthesis, the sintered body being so prepared by subjecting a sintered body prepared from ceramics based on silicon nitride to heat treatment at the temperature of 1,400 DEG C to 1,700 DEG C as to give a crystalline intergranular phase. The resulting diamond-coated body has exce...

A digital position control apparatus for controlling a position of an object to be controlled by digital information is disclosed. The digital position control apparatus comprises a detector for detecting the position of the object to be controlled, actuators to drive the object to be controlled and a digital signal processing section for calculating controlled variables to the actuators in corres...

An apparatus for forming a zoned distribution of particulate material within a fibrous web includes a conveying mechanism for providing a gas entrained supply of the particulate material and a segregating mechanism for centrifugally directing at least a portion of the particulate material into an accumulation region of the apparatus. A transferring mechanism selectively directs particulate materia...

A tire curing device (1) wherein an upper half mold (16) and a lower half mold (17) define a toroidal chamber (22) for accommodating a tire to be cured and constituting a portion of a closed circuit (115) for a batch charge of a heat exchange fluid, the tire being cured by circulating the fluid along the circuit (115) by means of an impeller device (84); the fluid being heated by a heating device ...