Abstract: The present invention relates to a method and apparatus for measuring the content of suspended substances in a flowing medium by illuminating the medium with light from a light source. Reflected light from the medium is detected by at least two detectors, at least one of which measures directly reflected light while the other detectors measure multiply reflected light. The detector for detecting directly reflected light is located such that a linear relationship is established between its output signal and the concentration of the flowing medium. The other detectors are located such that their output signals will be essentially constant in relation to the concentration of particles in the flowing medium within a large range. The measuring scheme provides for obtaining the quotient of the signal provided by direct reflection divided by the signal provided by multiple reflection.

Abstract: The invention relates to a process for insulating surfaces for the purpose of preventing or reducing occurrence of condensation on the surface, comprising applying to the surface a layer of a coating composition containing a binder and, distributed therein, granules of an expanded inorganic material having a bulk density of at least 150 kgs/m.sup.3. The invention also provides for a composition suitable for carrying out such process, comprising a binder and granules of an expanded inorganic material of the nature indicated.

Abstract: A gear machine comprising two helical gears running in mesh with each other, a first sealing body coming against one end surface of the gear pair, a fluid port in the first sealing body and a second sealing body coming against the outside circles (K) of the gears, at least at one gear meshing zone, is improved in that the tooth tops of the gears are adapted for sealing against the tooth bottoms of the gears in a plane (P) through the axes of the gears, the coacting teeth of the gears thus mutually seal along the whole of the pitch point line, and that the orifice of the port facing the gears substantially comprises a zone including the union of surfaces each defined by the outside and root circles (K and L, respectively) of the respective gear between the axis plane (P) and a gear radius (R) forming an angle (.alpha.) with the axis plane (P), said angle (.alpha.) at most attaining B.times.(1/R).times.tangent .beta.

Abstract: The accumulation of moisture on a cold surface exposed to humid conditions which tend to cause condensation on said surface is minimized by applying a coating to the surface which contains unoccluded, water-absorptive particles in admixture with a resinous binder in an amount sufficient to bind the particles together in a adherent coating on the surface, but insufficient to occlude the water absorptivity of the particles. The particles comprise a mixture of cellulosic fibers and water-absorptive, inorganic particles having a bulk density less than 150 kgs/m.sup.3.

Abstract: A gear machine comprises two helical gears (1, 2) in mutual mesh for compressing or pumping a fluid. The suction side of the machine can be made conventionally. The outlet port (4) of the machine is made as a plurality of holes (14), extending in towards the meshing zone at one side of the gear pair. The plurality of holes opens at one end (14a) within a Y-shaped area comprising the union of the surfaces which are each defined by the respective gear top and bottom circles (K, L) between a plane (P) through the axes of the gears and a gear radius (R) forming an angle to the axis plane at most attaining B .times. (1/R) .times. tangent .beta., where B is the width of the gear pair, R is the outside circle radius of the respective gear, and .beta. is the helix angle of the gears. At their other ends (14b), said holes are connected to a duct (6) at axially separated places in the duct, in the same order as they in the peripheral direction of the gears, open out onto said end surface.

Abstract: A synthetic antigenically active polypeptide, which includes the amino acid sequence:H-Asp-Ala-Glu-Gln-Arg-Gly-Glu-Leu-Ala-Ile-Arg-Asp-Ala-Asn-Ala-Arg -Leu-Ser-Glu-Leu-OH; a process for the preparation of such polypeptide; an antigenic agent comprising such polypeptide convalently bonded to an immunogenically active carrier; a pharmaceutical composition comprising such polypeptide or antigenic agent together with a pharmaceutically acceptable carrier or diluent; and a method for determining the presence or absence in a biological sample of antibodies monospecific to such polypeptide, which comprises introducing into the sample such polypeptide or such agent or such composition and determining the presence or absence of agglutination.

Abstract: A process for the isolation of cancer associated polypeptide antigen mainly by several steps of gel filtration and pH-gradient elution; a cancer associated polypeptide antigen based on a single peptide chain and denaturating irreversibly at pHs exceeding about 4.5; a composition comprising such antigen and a stabilizing amount of albumen in admixture therewith and a method of making such composition; a diagnostic composition comprising a particulate material labelled with albumen-stabilized antigen; process for preparing antibodies monospecific with regard to the cancer associated polypeptide antigen comprising preparing an oil emulsion, wherein an acid aqueous solution of the polypeptide is enclosed phase protected by a surrounding oil phase; a cancer diagnosis method based on determining the presence of cancer associated polypeptide antigen in a living animal body under examination; and composition useful as an immunizing agent containing as an active ingredient the cancer associated polypeptide antigen.

Abstract: A process for quantitative determination of the amount of antigen in a solution while using hemagglutination inhibition technique, comprising preparing under serial dilution a series of samples of said solution, adding to each of said samples a predetermined amount of antiserum containing antibodies specific with regard to the antigen in question, adding after incubation to each of the resulting samples a predetermined amount of the antigen carried by a particulate carrier resulting in hemagglutination, and preparing a corresponding series of control samples with known decreasing amounts of antigen. By measuring the diameter of the hemagglutination deposits of the control samples and plotting the measured diameters against the antigen concentrations, an S-shaped curve is obtained, the middle part of which has a steep inclination.

Abstract: The invention provides for a synthetic antigenically active polypeptide containing an immunologically inert portion and as an active immunological determinant group the amino acid sequence A.sub.-3 -A.sub.-2 -A.sub.-1 -A.sub.0 -A.sub.1 -A.sub.2 -A.sub.3, wherein A.sub.0 is an arginine residue, A.sub.1, A.sub.2, A.sub.-1 and A.sub.-2 are the same or different and selected from residues of: glycine, alanine, valine, leucine, lysine, and isoleucine and A.sub.3 and A.sub.-3 are same or different and selected from glutamic acid and aspartic acid. The invention also provides for a process for the preparation of such polypeptide.