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172 results about "Biological entity" patented technology

Noninvasive measurement system

The noninvasive measurement system provides a technique for manipulating wave data. In particular, wave data reflected from a biological entity is received, and the reflected wave data is correlated to a substance in the biological entity. The wave data may comprise light waves, and the biological entity may comprise a human being or blood. Additionally, a substance may comprise, for example, a molecule or ionic substance. The molecule may be, for example, a glucose molecule.Furthermore, the wave data is used to form a matrix of pixels with the received wave data. The matrix of pixels may be modified by techniques of masking, stretching, or removing hot spots.Then, the pixels may be integrated to obtain an integration value that is correlated to a glucose level. The correlation process may use a lookup table, which may be calibrated to a particular biological entity. Moreover, an amplitude and phase angle may be calculated for the reflected wave data and used to identify a glucose level in the biological entity.The glucose level may be displayed on a monitor attached to the computer. The computer may be a portable, self-contained unit that comprises a data processing system and a wave reflection capture system. On the other hand, the computer may be attached to a network of other computers, wherein the reflected wave data is received by the computer and forwarded to another computer in the network for processing.
Owner:STI MEDICAL SYST

Gel microdrops in genetic analysis

The invention provides methods of nucleic acid analysis. Such methods entail forming a population of gel microdrops encapsulating a population of biological entities, each entity comprising a nucleic acid, whereby at least some microdrops in the population each encapsulate a single entity. The population of gel microdrops is then contacted with a probe under conditions whereby the probe specifically hybridizes to at least one complementary sequence in the nucleic acid in at least one gel microdrop. At least one gel microdrop is then analyzed or detected. The biological entities can be cells, viruses, nuclei and chromosomes.
Owner:CELLAY

Sub-diffraction image resolution and other imaging techniques

The present invention generally relates to sub-diffraction image resolution and other imaging techniques. In one aspect, the invention is directed to determining and / or imaging light from two or more entities separated by a distance less than the diffraction limit of the incident light. For example, the entities may be separated by a distance of less than about 1000 nm, or less than about 300 nm for visible light. In one set of embodiments, the entities may be selectively activatable, i.e., one entity can be activated to produce light, without activating other entities. A first entity may be activated and determined (e.g., by determining light emitted by the entity), then a second entity may be activated and determined. The emitted light may be used to determine the positions of the first and second entities, for example, using Gaussian fitting or other mathematical techniques, and in some cases, with sub-diffraction resolution. The methods may thus be used, for example, to determine the locations of two or more entities immobilized relative to a common entity, for example, a surface, or a biological entity such as DNA or a protein. The entities may also be determined with respect to time, for example, to determine a time-varying reaction. Other aspects of the invention relate to systems for sub-diffraction image resolution, computer programs and techniques for sub-diffraction image resolution, methods for promoting sub-diffraction image resolution, methods for producing photoswitchable entities, and the like.
Owner:PRESIDENT & FELLOWS OF HARVARD COLLEGE

Sub-diffraction limit image resolution and other imaging techniques

The present invention generally relates to sub-diffraction limit image resolution and other imaging techniques. In one aspect, the invention is directed to determining and / or imaging light from two or more entities separated by a distance less than the diffraction limit of the incident light. For example, the entities may be separated by a distance of less than about 1000 nm, or less than about 300 nm for visible light. In one set of embodiments, the entities may be selectively activatable, i.e., one entity can be activated to produce light, without activating other entities. A first entity may be activated and determined (e.g., by determining light emitted by the entity), then a second entity may be activated and determined. The entities may be immobilized relative to each other and / or to a common entity. The emitted light may be used to determine the positions of the first and second entities, for example, using Gaussian fitting or other mathematical techniques, and in some cases, with sub-diffraction limit resolution. The methods may thus be used, for example, to determine the locations of two or more entities immobilized relative to a common entity, for example, a surface, or a biological entity such as DNA, a protein, a cell, a tissue, etc. The entities may also be determined with respect to time, for example, to determine a time-varying reaction. Other aspects of the invention relate to systems for sub-diffraction limit image resolution, computer programs and techniques for sub-diffraction limit image resolution, methods for promoting sub-diffraction limit image resolution, methods for producing photoswitchable entities, and the like.
Owner:PRESIDENT & FELLOWS OF HARVARD COLLEGE

Polymers for analyte detection

The present invention generally relates to organic polymers able to participate in an analyte-recognition process, where an analyte facilitates an energy transfer between an energy donor and an energy acceptor. Certain embodiments of the invention make use of fluorescent conjugated polymers, such as poly(phenylene ethynylene)s and other polymers comprising pi-conjugated backbones. For example, one aspect of the invention provides a fluorescent conjugated polymer and an indicator that can interact with each other in the presence of an analyte to produce an emissive signal. In some cases, the interaction may include energy exchange mechanisms, such as Dexter energy transfer or the strong coupling effect. The interaction of the conjugated polymer and the indicator, in some instances, may be facilitated through specific interactions, such as a protein / carbohydrate interaction, a ligand / receptor interaction, etc. Another aspect of the invention provides for the detection of biological entities, for example, pathogenic bacteria such as E. coli, or viruses such as influenza virus. In some cases, biological recognition elements may be used to determine the biological entity, for instance, carbohydrates that can be used to specifically interact with at least part of the biological entity, such as a protein in the cell membrane of a bacterium. Still other aspects of the invention involve articles, devices, and kits using any of the above-described systems.
Owner:MASSACHUSETTS INST OF TECH

Matrix array nanobiosensor

An apparatus for detecting multiple analytes comprising an array of nanobiosensors, each comprising a biological entity immobilized onto carbon nanotubes, wherein a plurality of the nanobiosensors in the array have unique biological entities, wherein a first one of the plurality of nanobiosensors has a first biological entity immobilized onto carbon nanotubes, and wherein a second one of the plurality of nanobiosensors has a second biological entity immobilized onto carbon nanotubes, the first biological entity is unique relative to the second biological entity.
Owner:APPLIED NANOTECH HLDG

Method and system for controlling the development of biological entities

A method and system are presented for use in controlling the processing of components, e.g. biological entities. Each component is assigned with a unique machine readable identification mark. Data records are provided representative of matching sets of the identification marks relating to at least two associated components. Each component-containing holder may be provided with the unique machine readable identification mark assigned to the biological entity in the holder. This enables to identify whether the biological entities to be processed relate to the matching set or not.
Owner:I M T INTERFACE MULTIGRAD TECH LTD

Systems and methods relating to network-based biomarker signatures

Systems and methods are provided herein for generating a classifier for phenotypic prediction. A computational causal network model representing a biological system includes a plurality of nodes and a plurality of edges connecting pairs of nodes. A first set of data corresponding to activities of a first subset of biological entities obtained under a first set of conditions is received, and a second set of data corresponding to activities of the first subset of biological entities obtained under a second set of conditions is received. A set of activity measures representing a difference between the first and second sets of data for a first subset of nodes is calculated. A set of activity values for a second subset of nodes, which are unmeasured, is generated. A classifier is generated for the phenotypes based on the set of activity measures, the set of activity values, or both.
Owner:PHILIP MORRIS PROD SA

Method and device for integrated biomolecular analyses

A method whereby first biological entities are recognized by way of second biological entities able to bind to the first (or the first to the second), including the steps of binding first biological entities to a surface comprising an array of first electrodes selectively energizable and addressable at least in part, positioned facing at least one second electrode, bringing the second biological entities into contact with the first, these second biological entities and possibly the first being moved by means of dielectrophoretic cages generated between the electrodes, and sensing any binding activity between at least a portion of the first and of the second biological entities, preferably utilizing radiation at a first frequency to excite fluorophore groups bound to the second biological entities and detecting the emission of fluorescence at a second frequency by means of optical sensors integrated into the electrodes, the biological entities preferably being concentrated on the electrodes by the fusion of dielectrophoretic cages.
Owner:SILICON BIOSYSTEMS SPA

Polypeptide display libraries and methods of making and using thereof

Disclosed herein are expression vectors which display a passenger polypeptide on the outer surface of a biological entity. As disclosed herein the displayed passenger polypeptide is capable of interacting or binding with a given ligand. Also disclosed are methods of making and using the expression vectors. N / C terminal fusion expression vectors and methods of making and using are also disclosed.
Owner:RGT UNIV OF CALIFORNIA

Seed coating composition

Disclosed is a seed coating composition that includes hemicellulose and a material that is beneficial for the growth of the seed. The beneficial material may be a control agent for a biological entity that is detrimental to the growth of the seed. The control agent may be, for instance, a fungicide, herbicide, or insecticide. Also disclosed is a coated seed, the seed including a coating over at least a portion thereof that comprises hemicellulose and, optionally, a control agent. Methods for preparing such coated seeds and for planting such coated seeds also are disclosed.
Owner:GRAIN PROCESSING CORP

Magnetic Detection of Small Entities

A novel detection or quantifying method for biological entities or molecules such as, but not limited to, DNA, microorganisms and pathogens, proteins and antibodies, that by themselves are target molecules or from which target molecules are extracted, comprises the steps of i) forming target molecule-dependent volume-amplified entities, ii) allowing magnetic nanoparticles to bind to said volume-amplified entities, and iii) measuring changes in dynamic magnetic response of the magnetic nanoparticles caused by the increase in hydrodynamic volume of said magnetic nanoparticles or measuring the magnetic field due to the magnetic nanoparticles as they bind to a sensor surface functionalized with a secondary capturing probe. Biosensors and kits are adapted to be used in such a method.
Owner:STROMBERG MATTIAS +5

Nested Multiplex Amplification Method for Identification of Multiple Biological Entities

The present invention provides a novel molecular method for the simultaneous identification and semi-quantification of multiple targeted biological entities from amongst a plurality. This invention discloses a method based on a multiplex nested amplification reaction in a single closed tube. The first amplification reaction relies on a set of large oligonucleotides for the amplification of common loci in all the targeted biological entities. The second nested amplification reaction relies on a set of short oligonucleotide primers that amplifies specific nucleotide sequences from all the amplicons previously produced in the first amplification reaction and generates an amplified product pattern capable of identifying each targeted biological entity. This method offers fast and accurate simultaneous identification of many targeted biological entities in any sample.
Owner:TAAG GENETICS

Method of controlling quantum dot photoluminescence and other intrinsic properties through biological specificity

A method of controllably changing an intrinsic property of a quantum dot by using a biological entity, either attached or in close proximity to the quantum dot, and changing the state of biological entity with a controllable mechanism. The change in state of the biological entity controllably changes the intrinsic property of the quantum dot. The photoluminescence emission of quantum dots can be controlled by the present method. The methods disclosed include controlling the magnitude of QD photoluminescence as well as turning the photoluminescence on / off. The methods disclosed include using the same biological control architecture to control other intrinsic QD properties such as charge state, magnetic or other property.
Owner:UNITED STATES OF AMERICA

Immobilised biological entities

There is described inter alia a device having a surface comprising a layered coating wherein the outer coating layer comprises a plurality of cationic hyperbranched polymer molecules characterized by having (i) a core moiety of molecular weight 14-1,000 Da (ii) a total molecular weight of 1,500 to 1,000,000 Da (iii) a ratio of total molecular weight to core moiety molecular weight of at least 80:1 and (iv) functional end groups, whereby one or more of said functional end groups have an anti-coagulant entity covalently attached thereto.
Owner:WL GORE & ASSOC INC

Sub-diffraction image resolution and other imaging techniques

The present invention generally relates to sub-diffraction image resolution and other imaging techniques. In one aspect, the invention is directed to determining and / or imaging light from two or more entities separated by a distance less than the diffraction limit of the incident light. For example, the entities may be separated by a distance of less than about 1000 nm, or less than about 300 nm for visible light. In one set of embodiments, the entities may be selectively activatable, i.e., one entity can be activated to produce light, without activating other entities. A first entity may be activated and determined (e.g., by determining light emitted by the entity), then a second entity may be activated and determined. The emitted light may be used to determine the positions of the first and second entities, for example, using Gaussian fitting or other mathematical techniques, and in some cases, with sub-diffraction resolution. The methods may thus be used, for example, to determine the locations of two or more entities immobilized relative to a common entity, for example, a surface, or a biological entity such as DNA or a protein. The entities may also be determined with respect to time, for example, to determine a time-varying reaction. Other aspects of the invention relate to systems for sub-diffraction image resolution, computer programs and techniques for sub-diffraction image resolution, methods for promoting sub-diffraction image resolution, methods for producing photoswitchable entities, and the like.
Owner:PRESIDENT & FELLOWS OF HARVARD COLLEGE

Test media and quantiative or qualitative method for identification and differentiation of biological materials in a test sample

A test medium and method for detecting, quantifying, identifying and differentiating up to four (4) separate biological materials in a test sample. A test medium is disclosed which allows quantifying and differentiating under ambient light aggregates of biological entities producing specific enzymes, which might include general coliforms, E. coli, Aeromonas, and Salmonella in a single test medium. A new class of nonchromogenic substrates is disclosed which produce a substantially black, non-diffusible precipitate. This precipitate is not subject to interference from other chromogenic substrates present in the test medium. In one embodiment, the substrates are selected such that E. coli colonies present in the test medium show as substantially black, general coliforms colonies show in the test medium as a blue-violet color, Aeromonas colonies present in the test medium show as a generally red-pink color, and Salmonella colonies show as a generally teal-green color. Other microorganisms and color possibilities for detection and quantification thereof are also disclosed. An inhibitor and method for making a test medium incorporating the inhibitor are disclosed.
Owner:MICROLOGY INC

Systems and methods

Instruments and cartridges for processing droplets in emulsions containing biological entities such as cells. A method of such processing comprises providing a plurality of the entities in a fluid; preparing a droplet from the fluid; determining whether the droplet contains one or more entities of said plurality of entities, or whether said droplet does not contain a said entity; sorting said droplet dependent on an outcome of the determination; and dispensing the sorted droplet into a reservoir. The dispensing may comprise identifying and extracting the sorted droplet from a first fluidic flow path of said fluid by transferring the sorted droplet from into a second fluidic flow path and then ejecting the sorted droplet into a reservoir by applying pressure to the second fluidic flow path. The droplet contents may be tracked so that the contents of an individual droplet can be sorted, selectively dispensed, and retrieved.
Owner:SPHERE FLUIDICS

Biodegradable polyester composition and uses thereof

The present invention relates to plastic composition comprising at least one polyester, biological entities having a polyester-degrading activity and at least an anti-acid filler, wherein the biological entities represent less than 11% by weight, based on the total weight of the plastic composition, and uses thereof for manufacturing biodegradable plastic articles.
Owner:CARBIOS

Immunoassay product and process

ActiveUS20070243628A1Rapid and efficient and convenient to detectReduce liquid volumeWithdrawing sample devicesSurgeryPorous membraneDistributor
A rapid, efficient and convenient method to detect one or more biological entities on a blotting membrane is provided. The detection can relate to the position, nature or amount of the biological substance on one or more membranes. The invention method involves a pressure assisted regiment (such as vacuum or positive gas pressure) for the supply and removal of reagents and permits washing of the contaminants from substances embedded in the membrane to be detected using very low volumes of liquid. This method enables completion of the blocking, washing and antibody binding steps in about 30 minutes without comprising blot quality. In another aspect, the invention is directed to an apparatus useful in conducting the method of the invention. The device is comprised of several layers including a porous support layer below the blotting membrane(s), a flow distributor above the blotting membrane(s) and a well on the flow distributor to contain the liquid to the desired area and to allow for lower starting volumes of such liquid. Preferably, the flow distributor is a non-binding or low binding hydrophilic porous membrane such as a 0.22 micron membrane.
Owner:MILLIPORE CORP
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