Abstract: An identification technique for micro-organisms in which a dilute solution of a culture medium containing an unknown micro-organism has added thereto an emissive agent such as a radioactive amino acid to produce a mix of emissive products that depends on the metabolic mechanism of the micro-organism. After a predetermined incubation period, the reaction is arrested and the solution layered onto a gel plate where it is subjected to electrophoresis. The plate is then autoradiographed by exposing the gel to a sensitive photographic film for a period sufficient to produce thereon a characteristic band pattern functioning as an identifier for the micro-organism. Identification may be effected by comparing the identifier for the unknown with a collection of identifiers for known micro-organisms to find a match with one of these known identifiers.

Abstract: A method for the identification of microorganisms comprises adding to a sample containing an unknown microorganism an emissive agent such as a radioactive amino acid to produce a mix of emissive products that depends on the metabolic mechanism of the microorganism. After incubation, the reaction is arrested and the emissive products are separated, as by electrophoresis on a gel plate. The plate may then be autoradiographed by exposure to a photographic film to produce on the latter a characteristic band pattern functioning as an identifier for the microorganism. Identification can be effected by comparing the identifier for the unknown with a collection of identifiers for known microorganisms to find a match with one of these known identifiers. The comparison may be carried out by scanning the unknown identifier to produce a signal which is compared with signals representing known identifiers stored in a computer.

Abstract: A material is traced to its origin or the flow pattern of a fluid medium is defined by incorporating into the material or fluid medium a perfluorinated C.sub.9 -C.sub.18 polycyclic hydrocarbon containing at least two bridgehead carbon atoms linked through a bridge containing at least one carbon atom, collecting a sample of the material or fluid medium after distribution or flow, and analyzing the sample for the presence of the perfluoro compound.

Abstract: A two-component liquid reagent and process is provided for detecting the presence of furfural in petroleum products.

Abstract: The ratio of two or more components employed to produce a thermoset or thermoplastic polymer are determined by analyzing the resultant polymer to determine ratio of tracer elements therein which were incorporated separately into each of the components employed to produce the polymer.

Abstract: Early detection of infectious mononucleosis is carried out using a sample of human blood by isolating and identifying the presence of Inmono proteins in the sample from a two-dimensional protein map with the proteins being characterized by having isoelectric banding as measured in urea of about -16 to -17 with respect to certain isoelectric point standards and molecular mass of about 70 to 75 K daltons as measured in the presence of sodium dodecylsulfate containing polyacrylamide gels, the presence of the Inmono proteins being correlated with the existence of infectious mononucleosis.

Abstract: Vapor permeable microcapsules filled with volatile perfluoroalkyl bromide and used to tag articles for the detection thereof.

Abstract: The present invention provides a method of tagging a substance to allow subsequent identification thereof comprising incorporating in the substance a polypeptide. Typically, the polypeptide is a synthetic polypeptide having a specific sequence of amino acids to constitute a particular molecular code which can be easily and readily identified.

Abstract: Species-linked diamine triacetic acids of the formula ##STR1## wherein T is an organic species containing at least one amine, hydroxyl, or thio functional group, L is the residue of at least one of those functional groups and R is a two or more atom long covalent bridge, are disclosed. Methods for their preparation, for the preparation of metal chelates from them and for the use of the chelates are also disclosed. In a preferred embodiment, the metal ions employed in the formation of the chelates are rare earth metal ions capable of forming fluorescent chelates which can in turn be employed in fluoroassay techniques.

Abstract: Methods and compositions of matter are disclosed, useful in detecting the source of particulate, gaseous borne effluents, comprising lanthanides which may be introduced into combustion processes. Sources may thereby be identified from the analytical responses of effluent particles as compared to those predicted for the introduced lanthanides which have been subjected to the known combustion conditions at the source.

Abstract: The present invention describes a method where, by using gentian violet as a tracer substance, the concentration of one or more selected components or factors of a complete animal feedstuff may be monitored throughout the life of the feed whether at the mill, in transit or at the place of its end use. In one embodiment, the method may be used to determine quickly whether any separation of components has occurred thereby destroying the homogeneity of the feedstuff and potentially endangering the animals to which the feedstuff is provided.

Abstract: The method for determining flow patterns within a subterranean formation penetrated by a spaced apart injection system and production system that comprises injecting into the formation at a predetermined depth from the injection system a solution containing a small amount of one or more water-soluble tracer compounds, recovering said tracer in the production system, determining the depth of recovery, and identifying said tracer compounds by gas chromatography and flame ionization detector; said tracer compounds being water-soluble organic compounds having phosphorus, nitrogen, or sulfur in the molecule.

Abstract: Vapor permeable microcapsules filled with volatile perfluoroalkyl pentafluorosulfide and used to tag articles for the detection thereof.

Abstract: Nitrobenzofurazan derivatives having the formula ##STR1## are provided wherein R.sub.1 and R.sub.2 each is hydrogen, lower alkyl or phenyl-lower alkyl; R.sub.3 is hydrogen, hydroxy or lower alkyl; R.sub.4 is hydrogen or lower alkyl; m is 2 or 3; and n is 0, 1 or 2; these compounds are useful analytical tools.

Abstract: Microparticles encoded for retrospective identification of substances into which they are incorporated. The novel microparticles have flat surfaces bearing repetitive identifying indicia such as alphanumerics which can be visually interpreted under magnification. The indicia may provide only part or all of the code.

Abstract: A method and an implementation are disclosed for measuring the contents of a certain component (e.g. a hormone) in a biological fluid. The basic principle of the method is that a complex is formed starting from the antagonist of the component sought for with the product of conjugation of the latter with a tracer (e.g. a radioisotope), said complex is introduced in the biological fluid to be tested and the quantity of the tracer which has been set free is measured with a measuring or dosing technique which is appropriate for the tracer which has been selected.

Abstract: Ordinary articles involved in transactions that require ascertaining authenticity of the article, such as wearing apparel, electronic parts, identification cards, or credit cards, may be identified as genuine through use of stimulatable inorganic phosphor compositions. The inorganic phosphors are applied to the article to be identified. The phosphors are excited to store energy therein, such as excitation by application of light as in a radiative photon process, or by application of thermal or electric fields as in a conductive process. The storage may be for however short or long a period. The result of storage is a later emission of real--time luminescence, sometimes called fluorescence, or of time-lag luminescence, sometimes called phosphorescence, or of no luminescence, where energy is either totally stored, converted to non-visible emissions such as infrared radiation, or internal conversion processed.

Abstract: Method of constructing pneumatic tire where at least one of its elements is comprised of a heat-curable rubber composition, an improvement in which such composition is identified with a releasably attached identification tag containing an information-providing ink composition thereon, wherein the ink composition contains a heat activatable blowing agent. The invention further relates to the heat-curable rubber composition so-identified and also to the identification tag itself.