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7611901 |
Method for determining the content of diesel fuel in a lubricating oil of a combustion engine
A method for determining proportion of diesel fuel in a lubricating oil of a combustion engine, including: forming a mixture containing an oil sample and a C 5 hydrocarbon such as a C 5 alkane;...
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7611844 |
Methods for detecting asymmetric dimethylarginine in a biological sample
The present invention provides methods of detecting asymmetric dimethylarginine (ADMA) in a sample, particularly a sample that may contain symmetrical dimethylarginine (SDMA) and/or arginine. The...
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7601543 |
Method of modulating a second carrier for partial modulation via pulsed flow modulator for comprehensive two-dimensional liquid or gas chromatography
This invention is a method and device for use with multi-dimensional chromatography that utilizes partial modulation. An analyte-bearing sample is subjected to a first dimension of chromatography....
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7601542 |
Analytical method for protein mapping using hydrogen/deuterium exchange
Analytical methods using hydrogen/deuterium exchange are provided which reduce or eliminate the back-exchange of deuterium for hydrogen. The methods, which are useful in protein and peptide...
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7598371 |
Nucleic acid separation using immobilized metal affinity chromatography
An immobilized metal affinity chromatography (IMAC) method for separating and/or purifying compounds containing a non-shielded purine or pyrimidine moiety or group such as nucleic acid, presumably...
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7595350 |
Ultraporous sol gel monoliths
Ultraporous sol gel monoliths and methods for preparing the same are provided, having superior flow characteristics for chromatography and analytical chemistry applications. The methods for forming...
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7595199 |
Method of detecting amyloid-like fibrils or protein aggregates
The present invention relates to methods of detecting the presence of detergent- or urea-insoluble amyloid-like fibrils or protein aggregates on filters. Preferably, said fibrils or aggregates are...
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7592468 |
Production of Δ 9 tetrahydrocannabinol
Δ9 THC acid is obtained from plant material and extracted into an aqueous solvent under conditions of pH control. The acid is converted to a salt and the salt extracted into a polar solvent,...
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7592182 |
Assay
Compositions and assay methods for and relating to the detection of glycated hemoglobin are provided. In particular, the presence and level of glycated hemoglobin can be detected in a blood sample....
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7589183 |
Prevention of leaching of ligands from affinity-based purification systems
In an affinity-type purification, ligands dissociated from the stationary phase that would otherwise leach into the species being purified are captured by a second ligand that is also incorporated...
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7588943 |
Method for quantitative monitoring of a gas injected in a reservoir in particular in a natural environment
A method for quantitative monitoring of a gas injected into a reservoir and likely to react chemically with the injection medium includes injecting into a reservoir a mixture of the potentially...
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7585679 |
Ion chromatography system with flow-delay eluent recycle
A chromatographic method including chromatographically separating sample ionic species in an eluent stream, detecting the separated sample ionic species, catalytically combining hydrogen and oxygen...
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7582482 |
Continuous ion species removal device and method
Apparatus and method for treating a liquid sample stream including at least one analyte ion species and matrix ion species of opposite charge to said one analyte ion species. The liquid sample...
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7582282 |
Methods for optimizing clinical responsiveness to methotrexate therapy using metabolite profiling and pharmacogenetics
The present invention provides methods for optimizing clinical responsiveness to chemotherapy in an individual through genotypic analysis of polymorphisms in at least one gene. The methods of the...
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7569149 |
Ionic liquids as solvents in headspace gas chromatography
A method of using an ionic liquid as solvent in headspace gas chromatography.
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7547536 |
Method for detecting bacterial spores
A method of detecting the presence and quantity of bacterial spores, which includes adding an electrophilic alcohol and an acid anhydride to a sample, admixing the sample with a solvent, and...
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7544518 |
Rapid quantitative analysis of proteins or protein function in complex mixtures
Analytical reagents and mass spectrometry-based methods using these reagents for the rapid, and quantitative analysis of proteins or protein function in mixtures of proteins. The methods employ...
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7537704 |
Method for determining the concentration of asymmetric dimethylarginine (ADMA)
The invention relates to a method for determining the concentration of asymmetric dimethylarginine (ADMA) simultaneously with arginine and with symmetric dimethylarginine (SDMA) in biological...
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7531075 |
Method and apparatus for generating a high purity eluant
An apparatus and method for electrochemically modifying the retention of a species on a chromatography material is disclosed. The apparatus comprises a housing having an effluent flow channel...
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7529629 |
Computational methods and systems for multidimensional analysis
A method for analyzing data obtained from at least one sample in a separation system ( 10, 50, 60 ) that has a capability for separating components of a sample containing more than one component as...
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7524457 |
Displacement chemical regeneration method and apparatus
Apparatus for chromatographically separating ionic species in an aqueous electrolyte-containing eluent to form an effluent, suppressing the effluent, detecting the suppressed effluent and passing...
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7517696 |
Chemical suppressors and method of use
A non-electrolytic method and apparatus for treating an aqueous sample stream including analyte ions and matrix ions of opposite charge, for pretreatment or suppression. The apparatus includes an...
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7514516 |
Measurement and preparation of branched vinyl polymers
Disclosed are novel non-linear vinyl polymers comprised of a multifunctional peroxide, and a cross-linking agent and/or a chain transfer agent, and methods of making such polymers having: at least...
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7510826 |
Process for the depletion or removal of endotoxins
A process for the depletion or removal of endotoxins from preparations containing active ingredients designated for therapeutical use which are obtained from natural sources by genetic engineering...
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7507586 |
Partial modulation via pulsed flow modulator for comprehensive two-dimensional liquid or gas chromatography with multiple modulation periods
This invention is a method and device for use with multi-dimensional chromatography that utilizes partial modulation with multiple secondary retention times. An analyte-bearing sample is subjected...
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7494824 |
Interactive system for presenting and eliminating substances
An interactive system is provided with at least one active surface of plastic from monomers containing at least one structural element derived from a carbon dioxide (A), and at least one substance...
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7485855 |
On-probe sample cleanup system and method for MALDI analysis
A system and method for cleanup of biological samples from contaminants prior to spectroscopy analysis. The system includes a support configured to hold a sample including a liquid having at least...
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7482164 |
Rapid serial experimentation of catalysts and catalyst systems
The present invention relates to a method of testing catalysts and catalyst systems via a plurality of stations in which each station can accommodate a common reactor module in order to accomplish...
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7479390 |
Device and method for micro sorbent extraction and desorption
This invention relates to a micro cartridge and to a method of using the micro cartridge to sample and extract components of interest from a gas or a liquid. The cartridge contains a sorbent and...
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7476852 |
Ionization-based detection
Embodiments of the present invention relate to detector structures for use in a micro gas analyzer, preferably in a differential setup. The detector structures may comprise one or more detector...
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7473560 |
Steroid hormone analysis by mass spectrometry
Methods, systems and kits for the simultaneous or sequential analysis of a multitude of steroid hormones by mass spectrometry are disclosed. The methods require minimal sample size and minimal...
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7473559 |
Method for measuring the content of a botulinum toxin in a formulation
A method of measuring the concentration of a bioactive agent is disclosed.
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7465586 |
Oral detection test for cannabinoid use
A method for confirming the active intake of marijuana and its active component Δ 9 -tetrahydrocannabinol (“Δ 9 -THC”) by detecting the amount of 11-nor-Δ 9 -THC carboxylic acid (“THCA”)...
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7459313 |
Method for measuring effective temperature inside a sealed container
A method of measuring the effective temperature inside a sealed container having a headspace is provided. A liquid solvent is added to the container, and a solid compound is added to the liquid...
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7445935 |
Process and apparatus for loading a particulate solid into a vertical tube
A process is described in which an elastic fluid is contacted with a particulate solid. This comprises providing a substantially vertical elongate tubular containment zone ( 1 ) containing a charge...
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7442556 |
Microfluidic-based electrospray source for analytical devices with a rotary fluid flow channel for sample preparation
This invention provides microfluidic devices and methods for using the same. Microfluidic devices of the present invention comprises a first elastic layer, a fluid flow channel within the elastic...
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7439079 |
Assay devices having detection capabilities within the hook effect region
A lateral flow assay device for detecting the presence or quantity of an analyte within a test sample is provided. The device utilizes multiple zones, one of which serves as an indicator of whether...
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7435598 |
Catalyst testing apparatus and process
An apparatus and process are described in which a plurality of preloaded catalyst samples tubes can be serially and automatically moved from a support to a reaction zone where each catalyst sample...
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7435597 |
Assays for zero-valent transition metals in sedimentary rocks using carbon monoxide with application to oil and gas exploration
The present invention is directed to novel assays for zero-valent transition metals. The novel assays of the present invention are generally methods or processes for quantitatively and/or...
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7431841 |
Method for the extraction of components made from organic material
The invention relates to a method for the extraction of components made from organic material, comprising the step of extraction with a single-phase mixture of 50 to 90 vol. % methanol and 50 to 10...
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7419831 |
Method and apparatus for determination of water and for normal phase liquid chromatography
A method for calibrating an analysis instrument, e.g., a gas chromatograph, for water analysis that includes four steps. The first step is to continuously remove water from a liquid that contains...
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7419830 |
Plural reaction chamber catalytic testing device and method for its use in catalyst testing
A catalytic testing device comprising
a reaction block comprising a set of reaction chambers, each chamber comprising a fluid inlet and outlet connected to an outgoing fluid duct connected...
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7402398 |
Measuring receptor homodimerization
The invention provides methods and kits for detecting and/or measuring receptor homodimers on a cell surface membrane. In one aspect, the methods employ pairs of probes comprising binding compounds...
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7402397 |
Detecting and profiling molecular complexes
Methods are provided for detecting the formation of complexes of molecules, especially proteins, in a sample, such as a cell or tissue lysate. In one aspect, a cleaving probe specific for a first...
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7402283 |
Electrolytic eluent generator and method of use
An acid or base is generated in an aqueous solution by the steps of:
(a) providing a source of first ions adjacent an aqueous liquid in a first acid or base generation zone, separated by a...
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7396691 |
Method for the detection of fluoride or hydrogen fluoride and detection kit
The present invention relates to a method for detecting and/or measuring the concentration of fluoride (F − ) or hydrogen fluoride (HF) in a sample, comprising the steps consisting of bringing...
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7393696 |
Bovine pregnancy test
This invention provides bovine pregnancy test methods and devices. The test is also suitable for other ruminant and/or ungulate animals. Antigens from Group A (early pregnancy antigens), and/or...
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7393692 |
SERS method for rapid pharmacokinetic analysis of drugs in saliva
The method and apparatus rapidly separate drugs and their metabolites from saliva and, in a continuous sequence of steps, rapidly detect, identify and quantify them through surface-enhanced Raman...
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7393691 |
SERS method and apparatus for rapid extraction and analysis of drugs in saliva
The method and apparatus rapidly separate drugs and their metabolites from saliva and, in a continuous sequence of steps, rapidly detect, identify and quantify them through surface-enhanced Raman...
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7393453 |
Method for analysis of perchlorate
A method for analyzing the content of perchlorate in a sample matrix comprising the steps of extracting the sample matrix and applying it to a reverse phase column, followed by elution with a...
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