摘要:
The present invention involves an artificial nose having an array comprising at least a first dye and a second dye in combination and having a distinct spectral response to an analyte. In one embodiment, the first and second dyes are from the group comprising porphyrin, chlorin, chlorophyll, phthalocyanine, or salen. In a further embodiment, the first and second dyes are metalloporphyrins. The present invention is particularly useful in detecting metal ligating vapors. Further, the array of the present invention can be connected to a wavelength sensitive light detecting device.
摘要:
The present invention involves an artificial nose having an array comprising at least a first dye and a second dye in combination and having a distinct spectral response to an analyte. In one embodiment, the first and second dyes are from the group comprising porphyrin, chlorin, chlorophyll, phthalocyanine, or salen. In a further embodiment, the first and second dyes are metalloporphyrins. The present invention is particularly useful in detecting metal ligating vapors. Further, the array of the present invention can be connected to a visual display device.
摘要:
Methods and systems for tracking compliance of personal protection (PP) articles in working environments. Tracking compliance includes providing at least one PP article configured with a smart tag; providing at least one predetermined criterion that governs compliance with respect to the at least one PP article in a particular working environment; tracking the PP article by retrieving smart tag data; and determining whether the smart tag data satisfies at least one predetermined criterion; and storing data relating to results of the determination.
摘要:
An optical reader for interrogating an optical analyte sensor includes a housing, comprising in its interior: at least one light source, a detector, and a programmable logic device. The housing has a registration feature configured to align the optical reader with an optical analyte sensor. Methods for confirming alignment of such optical readers are also disclosed.
摘要:
A filter system includes a housing, a filter medium disposed within the housing, an optical analyte sensor, and an optical reader. The optical analyte sensor is characterized by a first region that exhibit a first response to an analyte of interest and a second region that exhibit a second, different, response to an analyte of interest. The optical analyte sensor includes a detection medium and is disposed within the housing such that the detection medium is in fluid communication with the filter medium. The optical reader includes at least one light source and at least one detector.
摘要:
Composite particles of a metal oxide particle within a crosslinked, cored dendrimer are described. Additionally, methods of making the composite particles and compositions that contain the composite particles are described.
摘要:
A filter system includes a housing, a filter medium disposed within the housing and a optical analyte sensor also disposed within the housing in fluid communication with the filter medium. The optical analyte sensor includes a detection medium that changes at least one of its optical characteristics in response to an analyte. The filter system further includes an optical reader having at least one light source and at least one detector. The optical reader is attached to the housing such that at least a portion of light emitted by at least one light source is reflected from the optical analyte sensor and captured by at least one detector.
摘要:
Methods and systems for tracking compliance of personal protection (PP) articles in working environments. Tracking compliance includes providing at least one PP article configured with a smart tag; providing at least one predetermined criterion that governs compliance with respect to the at least one PP article in a particular working environment; tracking the PP article by retrieving smart tag data; and determining whether the smart tag data satisfies at least one predetermined criterion; and storing data relating to results of the determination.
摘要:
An optically-responsive multilayer reflective article is formed by applying a dilute solution or suspension of metallic nanoparticles to an optically-responsive detection layer. The solution or suspension is allowed to dry to form a semicontinuous liquid- or vapor-permeable light-reflective layer that will permit a liquid or vapor analyte to pass through the light-reflective layer to cause an optically-responsive change in the detection layer in the presence of the analyte.
摘要:
A filter cartridge 12 that includes a filter material 42, an end-of-service-life-indicator 40, a cartridge housing 22, and a window 38. The filter material 42 and ESLI 40 are disposed in the housing, and the ESLI 40 may be viewed through the window 38. The window 38 is configured such that the ESLI 40 can only be seen within a cone defined by an angle θ of 20 to 70 degrees. The limited viewing range precludes reader error when examining the ESLI for color change.