Matches 251 - 300 out of 318 < 1 2 3 4 5 6 7 >
Match Document Document Title
5055397 Geomicrobiological methods of ore and petroleum exploration  
Geomicrobiological exploration method employing one or more culture, luminometry or tritiated thymidine assays of microbes (bacteria) for sensitivity, determined as survival rate in percentage, of...
5004684 Method for ATP extraction  
A method for the extraction of ATP from a microorganism which comprises contacting said microroganism with an ATP releasing agent and thereafter contacting the resultant solution with a...
4971903 Pyrophosphate-based method and apparatus for sequencing nucleic acids  
A method for sequencing nucleic acid polymers is provided in which the polymer to be sequenced acts as a template for the production of a complementary polymer by a polymerase enzyme. The template...
4927752 Support used in bioluminescent dosing of enzymes, substrates or enzymatic inhibitors  
Method for the bioluminescent dosing of enzymes, substrates or enzymatic inhibitors, characterized in that there is used a transparent support made of synthetic plastic material previously treated...
4871660 Luminescence immuno-test kits, method for stabilizing same and quality control thereof  
Luminescence immuno-test kits consist of an antigen or antibody capable of showing luminescence and labelled with phthalic hydrazides, an antibody or antigen preferably bound to a carrier and an...
4863689 Apparatus for the detection of chemiluminescence  
Apparatus is provided for the detection of chemiluminescence, e.g., the luminescent assay of an analyte in a sample. Sample, namely the production of a permanent photographic record of such...
4861709 Detection and/or identification of microorganisms in a test sample using bioluminescence or other exogenous genetically-introduced marker  
A method for determining the presence of microorganisms in a tests sample. Exogenous DNA containing a luminescent system or other genetic marker system derived from a suitable donor source is...
4853327 Enhanced phthalazinedione chemiluminescence  
A chemiluminescence process comprising the contacting of a chemiluminescence precursor, an oxidant, an enzyme and a nitrogen compound selected from the group consisting of ammonia and a...
4833075 Immobilized luciferase for the quantitative determination of ATP  
Luciferase is immobilized on a membrane prepared from an absorbent albuminoid such as procine skin gelatin. The membrane may be formed by spreading a solution of porcine skin gelatin on a support...
4765961 Apparatus for detection of certain nitrogen-containing gases using chemiluminescence  
Chemiluminescence is detected in a luminol solution free of metal ions flowing through a porous material to indicate the presence of certain nitrogen-containing gases. Continuous monitoring of...
4761382 Immunological procedure for detecting or quantifying substances  
This invention relates to a method of detecting, analyzing, quantifying, or locating a substance of biological interest by an immunoassay in which a first component of an immune reaction in the...
4743561 Luminescent assay with a reagent to alter transmitive properties of assay solution  
An improved method and reagents are disclosed for determining a ligand in an assay solution containing the ligand, a reagent system and a luminescent compounds, wherein the intensity of the light...
4713324 Inverted latency specific binding assay  
A specific binding assay composition and method for determining a ligand in a sample are disclosed. The composition comprises (a) a binding partner for the ligand; (b) a detection system which has...
4704355 Assay utilizing ATP encapsulated within liposome particles  
An assay utilizing receptor or antibody sensitized liposome particles which have ATP encapsulated therein. The ATP is released by lysing the liposomes, and detected by means of luciferin-luciferase...
4687606 Metalloid precursor powder and method of making same  
A method of making a metalloid precursor powder is disclosed, which powder avoids impurity localization and is effective to produce an improved fine grained ceramic body. A metalloid melt is formed...
4687747 Phenanthridinium ester as a labelling compound in luminometric immunoassay  
Disclosed are novel chemiluminescent compounds and their method of use in luminometric immunoassays. The compounds, comprising salts of phenanthridinium esters, are particularly useful in sandwich...
4665022 Bioluminescent assay reagent and method  
Reagent for immunoassay, ligand binding assay and ligand receptor assay in which luciferin is covalently bonded to a molecule having biological activity for bonding to a particular biologically...
4628035 Immunoassay method  
An immunoassay method for measuring a concentration of an antigen for a short period of time by immobilizing an antibody over the whole zone of an effective supporting matrix for electrophoresis...
4614712 Immunoassays with luciferase labeled ligands or receptors  
Immunoassays which utilize an enzyme linked ligand or receptor wherein the enzyme is bacterial luciferase; mercantile kit useful in performing said immunoassay; and compounds utilized in performing...
4604364 Bioluminescent tracer composition and method of use in immunoassays  
A tracer composition is described whereby a nonradioactive photon emitter is coupled to a ligand, antigen or antibody for use in various immunoassay methods of analysis. The photon emitters...
4501813 Bioluminescence method for determining NADH or NADPH  
A method for determining NADH and/or NADPH-concentrations, for instance in NADH- or NADPH transforming systems, the method comprising the step of bringing the sample subject to determination in...
4492751 Heterogenous specific binding assay employing an enzyme substrate as label  
An improved heterogenous specific binding assay method which employs a substance having reactant activity, i.e., a reactant, as a labeling substance in the detection of a ligand in a liquid medium....
4483929 Liposomes with glycolipid-linked antibodies  
Lipid vesicles, labelled with encapsulated reporter compositions and bound to antibodies comprise a new class of immunoreagent, useful in immunoassays for ligands.
4421848 Method of detecting the presence of live organisms in substances  
The substance to be tested is premixed by gentle agitation in a glass cuvette with an excess of firefly essence and with a buffer solution and cutting agent, so that any live organisms present are...
4390620 Method and composition for the detection and study of cellular activity or the like and means for applying such method  
The invention pertains to a method for the study of the behaviour or detection of cells, organites or cellular fractions, possibly present in a medium. It comprises providing said medium with the...
4385113 Rapid, quantitative determination of bacteria in water  
A bioluminescent assay for ATP in water borne bacteria is made by adding nitric acid to a water sample with concentrated bacteria to rupture the bacterial cells. The sample is diluted with sterile,...
4357420 Bioluminescence methods for enzymatic determinations  
An enzymatic method for continuous, on-line and rapid detection of diagnostically useful biomarkers, which are symptomatic of disease or trauma-related tissue damage, is disclosed. The method is...
4347058 Thyroid polarization fluoroimmunoassay  
A polarization fluoroimmunoassay for T 3 or T 4 thyroid hormones where a serum sample is assayed by contacting the sample with a base to denature the thyroxine binding globulins and thereby form...
4347059 T.sub.3 Uptake polarization fluoroimmunoassay  
A T 3 uptake polarization fluoroimmunoassay where a sample is assayed by contacting a serum sample with T 3 to form a solution, contacting the solution with a separating agent and incubating the...
4330620 Method and reagent for the determination of creatine kinase MB  
A method for the determination of creatine kinase-MB in serum by immunological exclusion of sub-unit M and measurement of the sub-unit B for the determination of creatine kinase, the improvement...
4318707 Macromolecular fluorescent quencher particle in specific receptor assays  
Homogeneous immunoassay employing a light absorbing particle to which a member of an immunological pair (mip)-ligand and antiligand is bound and a labeled mip, where the label is light emitting....
4314026 Process for determining the complement-dependent cytotoxicity mediated by anti-HLA antibodies by means of ATP determination and device for ATP determination  
The present invention relates to a process for determining the complement-dependent cytotoxicity mediated by anti-HLA antibodies wherein the cytotoxicity is determined by measuring the loss of...
4303752 Selective determination of nucleotides in viable somatic and microbial cells  
A method is disclosed for measuring the concentration of nucleotides and the number of viable cells in a biological sample containing somatic and/or microbial cells by treatment of a sample of...
4302534 Chemiluminescent enzyme immunoassay  
A heterogeneous enzymatic immunoassay, in which chemiluminescence is employed as a detection means, is disclosed. The chemiluminescence is produced by an enzymatic catalyzed redox reaction between...
4286057 Method and reagent for the determination of creatine kinase  
Creatine kinase is determined by the reaction of creatine phosphate with adenosine diphosphate with the formation of adenosine triphosphate, reaction of the latter with luciferin and oxygen in the...
4283490 Method for detection of low level bacterial concentration by luminescence  
An improved method for detecting very low concentrations of luminescent reactive molecules from microbial cells in samples of fluids and degraded solids is disclosed. A sample containing microbial...
4278761 Enzyme assay and kit therefor  
Compositions and methods featuring, in one aspect, an enzyme assay in which one of a pair of enzymes is immobilized on an insoluble support, and brought into contact with a solution containing the...
4278760 Method and composition for determining an oxidized pyridine co-enzyme  
A method for the quantitative determination of an oxidized pyridine co-enzyme which comprises reacting a sample containing oxidized pyridine co-enzyme in the presence of its specific alcohol...
4277437 Kit for carrying out chemically induced fluorescence immunoassay  
A competitive protein binding method is provided for the determination of an analyte which is a member of an immunological pair consisting of ligand and receptor for the ligand. A chemiluminescent...
4264727 Assaying of digoxin by means of bioluminescence and inhibition of NA.sup.+ - .sup.+ -ATPase  
A method is described for quantitative measurement of digoxin and other digitaloids in serum. The method is based on the inhibition of Na + , K + --specific ATPase enzyme by digitaloids as a...
4246340 Method and reagent for bioluminiscence  
An improvement in the process for the determination of the concentration of adenosinetriphosphate (ATP) in ATP-converting reactions wherein the concentration is a function of the intensity of light...
4238195 Fluorescer-labeled specific binding assays  
A specific binding assay method and reagent means for determining a ligand, such as an antigen or antibody, in, or the ligand binding capacity of, a liquid medium which employs a fluorescent...
4235961 Method for photometric determination of the subunit B of creatine kinase and a reagent for carrying out the method  
A method for the photometric determination of the subunit B of creatine kinase (CK-B) in buffered water solution through reaction with creatine phosphate, ADP and the system luciferase/D-luciferin...
4234681 Immobolized light emitting systems  
Light emitting systems are immobilized on a support to provide a localized, concentrated release of light that increases the sensitivity of detection systems when assaying bio-materials. A...
4220450 Chemically induced fluorescence immunoassay  
A competitive protein binding method is provided for the determination of an analyte which is a member of an immunological pair consisting of ligand and receptor for the ligand. A chemiluminescent...
4144134 Method for detection of bacterial concentration by luminescence  
A method for detecting low levels of microbial cells in samples of fluids and degraded solids. The non-microbial reactive materials in a sample are solubilized by selective use of enzymes and the...
4132599 Determination of antimicrobial susceptibilities on infected urines without isolation  
Method for the quick determination of the susceptibilities of various unidentified bacteria contained in an aqueous physiological fluid sample, particularly urine, to one or more antibiotics. A...
4104126 Non-isotopic substrate assay employing bacteriolysis products  
Substrates such as haptens and antigens, and those for receptor proteins and native circulating binding proteins are assayed by determining bacteriolysis products occasioned by bacteriophage...
4080265 Method for the determination of creative phosphokinase enzyme  
A method for the detection and the quantitative determination of the enzyme creatine phosphokinase (CPK), an agent present in abnormal concentrational levels in serum in many cases of mental...
4076502 Method, composition, and device for determining the specific gravity of a liquid  
A method, composition, and device for determining the specific gravity of a liquid. In the method, a sample of the liquid to be tested is contacted with standardized quantities of substances which...
Matches 251 - 300 out of 318 < 1 2 3 4 5 6 7 >