Abstract: Compositions containing polyanthrylene and methods of making these compositions are disclosed herein. The polyanthrylene composition can, for example, be used for detection of iron in a sample.
Type:
Grant
Filed:
April 11, 2014
Date of Patent:
June 23, 2015
Assignee:
Tongji University
Inventors:
Mei-rong Huang, Shao-jun Huang, Jiang-Ling Li, Xin-gui Li
Abstract: Provided are methods for determining the amount of thyroglobulin in a sample using various purification steps followed by mass spectrometry. The methods generally involve purifying thyroglobulin in a test sample, digesting thyroglobulin to form peptide T129, purifying peptide T129, ionizing peptide T129, detecting the amount of peptide T129 ion generated, and relating the amount of peptide T129 ion to the amount of thyroglobulin originally present in the sample.
Type:
Grant
Filed:
October 14, 2013
Date of Patent:
June 2, 2015
Assignee:
Quest Diagnostics Investments Inc.
Inventors:
Yanni Zhang, Nigel J. Clarke, Richard E Reitz
Abstract: The invention relates to the quantitative measurement of steroidal compounds by mass spectrometry. In a particular aspect, the invention relates to methods for quantitative measurement of steroidal compounds from multiple samples by mass spectrometry.
Abstract: Luminescent labels based on aromatic and heterocyclic compounds, including reactive intermediates used to synthesize these compounds, and methods of synthesizing and using these reporter compounds. These labels combine high photostabilities, large Stokes' shifts and contain a pyrimidinium moiety as a water-soluble group. These luminescent compounds relate generally to the following structure: The methods relate generally to the synthesis and/or use of reporter compounds for fluorescence lifetime or fluorescence polarization based applications.
Type:
Grant
Filed:
October 18, 2010
Date of Patent:
May 19, 2015
Assignee:
SETA BioMedicals, LLC
Inventors:
Leonid D. Patsenker, Inna G. Yermolenko, Iryna A. Fedyunyaeva, Yelena N. Obukhova, Olga N. Semenova, Ewald A. Terpetschnig
Abstract: An improved analytical method for analysis of dianhydrogalactitol preparations provides a method for determining the purity of dianhydrogalactitol and detecting impurities in preparations of dianhydrogalactitol, as well as identifying any such impurities. The method employs high performance liquid chromatography (HPLC), in particular, HPLC with evaporative light scattering detection (ELSD); the HPLC can be followed by tandem mass spectroscopy. The method can further comprise the step of performing preparative HPLC collection of at least one specific substance peak present in a preparation of dianhydrogalactitol.
Abstract: An auto-calibration system for diagnostic test strips is described for presenting data individually carried on each test strip readable by a diagnostic meter. The carried data may include an embedded code relating to data particular to that individual strip. The data is presented so at to be read by a meter associated with the diagnostic test strip in order to avoid manually inputting the information.
Type:
Grant
Filed:
July 15, 2005
Date of Patent:
April 21, 2015
Assignee:
Nipro Diagnostics, Inc.
Inventors:
Gary T. Neel, Brent E. Modzelewski, Allan Javier Caban, Adam Mark Will, Carlos Oti
Abstract: A method for determining origins of food products, and more specifically for determining geographic and/or biological origin of food products containing alcohols or sugars includes preparing an alcohol sample from a product in question, removing exchangeable hydrogen/deuterium atoms from alcohol molecules of the sample, determining the isotopic composition of non-exchangeable hydrogen/deuterium atoms from sample alcohol, and analyzing results for adulteration or determination of product origin. In addition, alcohol ?13C and ?18O isotopic values, along with ?18O isotopic value of the product water are used for the analysis. Products containing sugar are also subjected to tightly controlled fermentation.
Abstract: A method for rapidly measuring melatonin adulteration of Chinese patent medicines and healthcare foods comprises: (1) extracting melatonin added to a Chinese patent medicine or healthcare food by using ethyl acetate; and (2) adding p-dimethylaminocinnamaldehyde to the extracted solution, and observing color. The method is rapid, simple and convenient, has strong specificity, high accuracy, reaction sensitivity, and a wide application range, and is applicable to on-site detection of melatonin adulteration of a Chinese patent medicine or healthcare food.
Type:
Grant
Filed:
July 2, 2012
Date of Patent:
April 14, 2015
Assignee:
Shenzhen Institute For Drug Control
Inventors:
Tiejie Wang, Yi Lu, Lihe Xiao, Xiaoying Guan, Dongqi Han, Guo Yin, Jue Wang, Xueqing Li, Yan Yan
Abstract: This invention provides compositions that have a light emitting reporter linked to biomolecules, preferably, nucleotide oligomers. The light reporter particles are silylated and functionalized to produce a coated light reporter particle, prior to covalently linking the biomolecules to the light reporter particle. The light reporter particles of the invention can be excited by a light excitation source such as UV or IR light, and when the biomolecule is DNA, the attached DNA molecule(s) are detectable by amplification techniques such as PCR.
Type:
Grant
Filed:
February 7, 2013
Date of Patent:
April 14, 2015
Assignee:
APDN (B.V.I.) Inc.
Inventors:
Thomas Kwok, Benjamin MingHwa Liang, Stephane Shu Kin So
Abstract: A biosensor system determines an analyte concentration of a biological sample using an electrochemical process without Cottrell decay. The biosensor system generates an output signal having a transient decay, where the output signal is not inversely proportional to the square root of the time. The transient decay is greater or less than the ?0.5 decay constant of a Cottrell decay. The transient decay may result from a relatively short incubation period, relatively small sample reservoir volumes, relatively small distances between electrode surfaces and the lid of the sensor strip, and/or relatively short excitations in relation to the average initial thickness of the reagent layer. The biosensor system determines the analyte concentration from the output signal having a transient decay.
Type:
Grant
Filed:
May 29, 2013
Date of Patent:
April 14, 2015
Assignee:
Bayer Healthcare LLC
Inventors:
Huan-Ping Wu, Steven C. Charlton, Amy H. Chu, Andrew J. Edelbrock, Sung-Kwon Jung, Dijia Huang
Abstract: Described are devices and methods for detecting the match quality and concentration of analytes binding to an electrode surface. The devices utilize a clock to measure capacitance change as a function of time and a temperature controller to measure the capacitance change as a function of temperature.
Type:
Grant
Filed:
December 28, 2006
Date of Patent:
April 7, 2015
Assignee:
Intel Corporation
Inventors:
Gordon Holt, Hernan Castro, Brandon Barnett
Abstract: A substrate mimicking intercellular lipids in stratum corneum consisting of a substrate and a lipid membrane formed on the substrate, wherein the lipid membrane is formed from ceramide, palmitic acid and cholesterol, and the ceramide, palmitic acid and cholesterol are present at a mass ratio of 20-70%:10-60%:20-40% (ceramide:palmitic acid:cholesterol).
Abstract: Disclosed are devices, arrangements and methods for quantifying the concentration of an analyte present in bodily fluid, including: an assay pad having at least one chemical reagent capable of producing a detectable signal in the form of a reaction spot upon reaction with the analyte; a light source; a detector array; a processor; and a memory in communication with the processor, the memory comprising: (a) at least one value indicative of one or more of: (i) the level of hematocrit contained in the sample; (ii) the volume of the sample applied to the assay pad; or (iii) imperfections present in the reaction spot; and (b) at least one algorithm for calculating the concentration of the analyte contained in the sample.
Abstract: Constant calibration methods and apparatuses for analytical devices that are located in remote positions in order to allow for reliable and automated measurements of various contaminants within water or other liquid samples. The proposed calibration systems allow for certain methods to measure total amounts of certain trihalomethane and haloacetic acid contaminants, at least, in drinking water samples from such remote locations, through the utilization of a standard addition introduction of known concentrations of such contaminant compounds within target samples, followed by separation through a capillary membrane sampling device and measurement of such different contaminants via flow injection analysis (FIA). In such a manner, the on-line, remote system provides the necessary reliability for a water utility or like entity on which to base any further needed water treatment activities without having to perform such measurements in a distinct lab setting.
Type:
Grant
Filed:
March 15, 2013
Date of Patent:
March 3, 2015
Assignee:
University of Memphis Research Foundation
Abstract: The present invention is directed to methods and systems for detecting the presence of explosive elements. A sample element may be used to swipe an object for a test sample. The sample element may be positioned in a sample holder of a testing device having a heater. The heater may be programmed to heat the sample element and sample in a controlled manner through two or three temperature increases from approximately 35 degrees to 165 degrees centigrade in approximately 40 seconds. Prior to each temperature increase a first, second and third reagent fluid is applied to the sample holder, and during the temperature rise the sample holder is observed for the presence of various explosive elements by detecting colors as compared to a color chart. The color observations may be based on time and temperature variations using a testing device.
Abstract: In some embodiments, an analyte detection system is provided that includes a nanochannel, an electrode arrangement, and a plurality of nanoFET devices disposed in the nanochannel. A plurality of nucleic acid base detection components can be used that include a plurality of nanopores, a plurality of nanochannels, a plurality of hybridization probes, combinations thereof, and the like. According to other embodiments of the present teachings, different coded molecules are hybridized to a target DNA molecule and used to detect the presence of various sequences along the target molecule. A kit including mixtures of coded molecules is also provided. In some embodiments, devices including nanochannels, nanopores, and the like, are used for manipulating movement of DNA molecules, for example, in preparation for a DNA sequencing detection. Nanopore structures and methods of making the same are also provided as are methods of nucleic acid sequencing using the nanopore structures.
Type:
Grant
Filed:
January 4, 2011
Date of Patent:
March 3, 2015
Assignee:
Life Technologies Corporation
Inventors:
Hongye Sun, Eric S. Nordman, Mark F. Oldham, John R. O'Neill, Charles Connell, Umberto Ulmanella, Aldrich N. K. Lau, Theofilos Kotseroglou, Kenneth J. Livak
Abstract: An automated system and process for the titration of either Waste vegetable oil (WVO) or virgin vegetable oil during its chemical conversion into Biodiesel. A system capable of automatically measuring and controlling the addition of a suitable amount of titration fluid is controlled in reaction to a pH level measurement tool, as determined by sensors and software. The process comprises forming a single phase solution of WVO and titrant in a ratio of between 10:1 to 50:1.
Type:
Grant
Filed:
August 22, 2011
Date of Patent:
May 13, 2014
Inventors:
Jimmy Gracia, Anthony Troy Hardtke, Eric Tallent
Abstract: An assembly determines an analyte concentration in a sample of body fluid. The assembly includes a test sensor having a fluid-receiving area for receiving a sample of body fluid, where the fluid-receiving area contains a reagent that produces a measurable reaction with an analyte in the sample. The assembly also includes a meter having a port or opening configured to receive the test sensor; a measurement system configured to determine a measurement of the reaction between the reagent and the analyte; and a temperature-measuring system configured to determine a measurement of the test-sensor temperature when the test sensor is received into the opening. The meter determines a concentration of the analyte in the sample according to the measurement of the reaction and the measurement of the test-sensor temperature.