Abstract:
A ligand specific of a bioactive substance to be purified is fixed through a linkage silane on a mineral particulate support selected amongst SiO2, Al2O3, ZrO2 and TiO2, the particles thereof being submicronic, non porous and of large specific surface. Said support is contacted with an aqueous extract containing amongst other things said bioactive substance, during a time sufficient to specifically fix the bioactive substances to the support; the latter is then separated and, by desorption, the desired bioactive substance is isolated.
Abstract translation:要纯化的生物活性物质的配体特异性通过连接硅烷在选自SiO 2,Al 2 O 3,ZrO 2和TiO 2中的矿物颗粒载体上固定,其颗粒是亚微米级,非多孔性和大比表面积。 所述载体与包含所述生物活性物质的水提取物接触,足以将生物活性物质特异性地固定在载体上; 然后分离后者,并通过解吸分离所需的生物活性物质。
Abstract:
A melted metal is placed in contact with a bed of moving pearls. This melted metal breaks up in fine particles, which are rapidly cooled by contact with these pearls and, because of this, acquire a structure which is typical for such a rapid cooling.
Abstract:
The analytic sample containing the coenzyme to be determined, particularly NADH or NADPH, is placed in the presence of a fluorine-containing aromatic compound. In the presence of oxygen and peroxidase, said fluorine-containing compound releases fluoride ions at a rate proportional to the present quantity of coenzyme to be determined. The thus formed F ions are dosed, thereby leading to the result searched for.
Abstract:
The printer comprises a series of needles (1) each associated to an electric lead (8) which extends in the gap of a permanent magnet (11). The extremities of each lead are fixed to respective supports (9, 10) and are selectively connected to a current source to make a current (I) circulate in said leads so that, in the presence of a magnetic field in the air gap, a force (F) acts upon the lead (8) which communicates to the needle (1) an elongation (e) in the direction of the surface to be printed.
Abstract:
The instrument comprises as the main optical element a waveguide carrying a reactant specific to an analyte to be determined. Light is injected at one end (proximal end) of the waveguide and is reflected from the other end (distal end) so that it travels forwards and backwards in the guide before being collected. Along its path it interacts with a complex forming on the surface of the guide as the result of the reaction of said reactant with the analyte whereby a light signal is produced of a wavelength different from the exciting signal. The distal end of the waveguide is provided with filter means to block the exciting residual signal wavelength and to freely pass the response signal wavelength thus minimizing background noise.
Abstract:
The dispensor comprises a flexible sealed container (1) arranged into a rigid housing (3) which encloses a ratchet mechanism comprising a ratchet toothing integral with a tubular element (4) and pawls (11) mounted by means of elastic arms (10) on a disc (9) arranged above a flexible bag (1). Elastic elements (12) hooked to the disc (9) take it down as the beverage is drown from the flexible bag (1). The ratchet mechanism retains the disc (9) when the pressure in the bag (1) is higher than the atmospheric pressure.
Abstract:
The connector is intended to electrically connect a "daughter" module to the "bus" bars of a "mother" system. It comprises a plurality of conductor tracks (21) formed on one face of a flexible insulating sheet (13) which embodies the printed circuit board of an electronic circuit of module, the other face of said sheet being integral with a spring blade (20) intended to keep the tracks (21) in a naturally distant position with respect to the "bus" bars to which they are to be connected. The contacting of the tracks and of the "bus" bars takes place by displacement of a slide (12) susceptible of engaging the sheet (14) during part of its travel and to cause it to bend against the blade (20) sufficiently so as to make the tracks of the sheet touch the "bus" bars. The contact breaking is effected by a reverse displacement of the slide.
Abstract:
Polyaspartate and polyglutamate of biodegradable acyloxymethyl usable as drug carrier in an encapsulated state or incorporated in the polymer matrix. The polypeptide thus loaded is enzymatically degraded in the organ where it has been placed and thereby progressively releases the drug contained therein.
Abstract:
The device comprises an electrode (2) of which the diameter is of the same magnitude order as the droplet to be projected, said electrode emerging at the surface of an electrically insulating support (1). Said support (1) is immersed into a liquid reservoir (3) presenting an opening (4). The support (1) is arranged so that its face wherein the electrode (2) is flush is recessed by a certain distance from the plane of the opening (4) so that said face is covered by the liquid contained in the reservoir (3) wherein a counter electrode (5) is arranged. Those electrodes (2, 5) are connected to an intermittent current source intended to form an electric field through the liquid which, by concentration to the portion of the electrode (2) emerging from the support (1) causes the projection of a liquid droplet.