Abstract:
Embodiments of the present invention are directed to kits and methods for the detection of toxins produced by cyanobacteria. The methods and kits feature sample preparation steps with weak cationic and anionic exchange resins and small particle analytical columns operating at 4.000 to 15,000 psi.
Abstract:
Devices, methods and systems effective to evaluate a physical or chemical property of a surfactant-treated biological fluid sample are provided.
Abstract:
Fluorescent quinolizinocoumarin compounds substituted with electrophilic reactive groups that bind thiol compounds are described. The compounds are useful in detecting oxidative stress and processes associated therewith in live cells.
Abstract:
Apparatus and methods for measuring the concentrations of organic and inorganic carbon, or of other materials, in aqueous samples are described, together with related, specially adapted components and sub-assemblies and related control, operational and monitoring systems.
Abstract:
Apparatus and methods for measuring the concentrations of organic and inorganic carbon, or of other materials, in aqueous samples are described, together with related, specially adapted components and sub-assemblies and related control, operational and monitoring systems.
Abstract:
Disclosed herein are methods related generally to a patient selection process for identifying individuals for treatment of cancer, inflammation, pain, and/or related conditions.
Abstract:
The present invention provides sensors and methods for determination of an analyte. The analytes may be determined by monitoring, for example, a change in an optical signal of an emissive material upon exposure to an analyte. In some embodiments, the analyte and the emissive material may interact via a chemical reaction, or other chemical, biochemical or biological interaction (e.g., recognition), to form a new emissive species. In some cases, the present invention may be used for the detection of analytes such as explosives (e.g., RDX, PETN). Methods of the present invention may be advantageous in that the high sensitivity of luminescence (e.g., fluorescence) spectroscopy can allow for the reliable detection of small changes in luminescence intensity.
Abstract:
The compositions and methods relate to an organic polymer-inorganic particle sensor material for detecting analytes. Interactions between the polymer and the particles are affected by the presence of analyte, which displaces the polymer and increases its free volume. This change in free volume can be detected, e.g., using an embedded piezoresistive microcantilever (EPM) sensor. Analytes that can be detected include noxious substances, such as hydrogen cyanide gas and carbon monoxide.
Abstract:
L'invention a pour objet un indicateur de stérilisation (17), caractérisé en ce qu'il comprend : un composé (21) du type chauffant lorsqu'il est mis en contact avec des atomes d'oxygène 0 et/ou d'azote N; et un colorant thermochromique (19), en contact thermique avec le composé (21).
Abstract:
The present invention generally relates to methods for modulating the optical properties of a luminescent polymer via interaction with a species (e.g., an analyte). In some cases, the present invention provides methods for determination of an analyte by monitoring a change in an optical signal of a luminescent polymer upon exposure to an analyte. Methods of the present invention may be useful for the vapor phase detection of analytes such as explosives and toxins. The present invention also provides methods for increasing the luminescence intensity of a polymer, such as a polymer that has been photobleached, by exposing the luminescent polymer to a species such as a reducing agent.