Abstract: A memory device may be configured to receive a command to access a block of memory that is one of multiple blocks of memory included in the memory device. The memory device may be configured to receive a cryptographic signature associated with the command. The memory device may be configured to enable or disable access to the block of memory based on the command and based on the cryptographic signature. The memory device may be capable of separately restricting access to each individual block of the multiple blocks.

Abstract: Lateral flow devices, methods and kits for performing lateral flow assays are provided.

Abstract: Systems for protein quantitation using a Fabry-Perot interferometer. In one arrangement, a quantitation device includes an infrared source, a sample holder, and a Fabry-Perot interferometer positioned to receive infrared radiation from the source passing through a sample on the sample holder. A band pass optical filter sets the working range of the interferometer, and radiation exiting the interferometer falls on a detector that produces a signal indicating the intensity of the received radiation. A controller causes the interferometer to be tuned to a number of different resonance wavelengths and receives the intensity signals, for determination of an absorbance spectrum.

Abstract: The disclosure provides a highly sensitive assay to detect the presence of a target analyte in a sample.

Abstract: Methods and apparatus to adjust operation of a fluid flow control assembly are disclosed. An example safety valve controller apparatus includes comparator circuitry to compare a current measurement to at least one of a first threshold associated with a first flow setting of a fluid flow control assembly or a second threshold associated with a second flow setting of the fluid flow control assembly, and determine a first drive signal associated with the first flow setting or a second drive signal associated with the second flow setting in response to satisfying a respective one of the first or second thresholds, and current modulating circuitry to determine a third drive signal based on the current measurement, the third drive signal to modulate the flow setting of the fluid flow control assembly between the first and second flow settings.

Abstract: Systems for protein quantitation using a Fabry-Perot interferometer. In one arrangement, a quantitation device includes an infrared source, a sample holder, and a Fabry-Perot interferometer positioned to receive infrared radiation from the source passing through a sample on the sample holder. A band pass optical filter sets the working range of the interferometer, and radiation exiting the interferometer falls on a detector that produces a signal indicating the intensity of the received radiation. A controller causes the interferometer to be tuned to a number of different resonance wavelengths and receives the intensity signals, for determination of an absorbance spectrum.

Abstract: Lateral flow devices, methods and kits for performing lateral flow assays are provided.

Abstract: Lateral flow devices, methods and kits for performing lateral flow assays are provided.

Abstract: Systems for protein quantitation using a Fabry-Perot interferometer. In one arrangement, a quantitation device includes an infrared source, a sample holder, and a Fabry-Perot interferometer positioned to receive infrared radiation from the source passing through a sample on the sample holder. A band pass optical filter sets the working range of the interferometer, and radiation exiting the interferometer falls on a detector that produces a signal indicating the intensity of the received radiation. A controller causes the interferometer to be tuned to a number of different resonance wavelengths and receives the intensity signals, for determination of an absorbance spectrum.

Abstract: Methods and apparatus to adjust operation of a fluid flow control assembly are disclosed. An example safety valve controller apparatus includes comparator circuitry to compare a current measurement to at least one of a first threshold associated with a first flow setting of a fluid flow control assembly or a second threshold associated with a second flow setting of the fluid flow control assembly, and determine a first drive signal associated with the first flow setting or a second drive signal associated with the second flow setting in response to satisfying a respective one of the first or second thresholds, and current modulating circuitry to determine a third drive signal based on the current measurement, the third drive signal to modulate the flow setting of the fluid flow control assembly between the first and second flow settings.

Abstract: A system and method for measuring thicknesses of layers of a multi-layered structure. The method includes generating a terahertz wave pulse, transmitting the terahertz wave pulse to a multi-layered structure having multiple layers of materials, receiving reflected terahertz wave pulses reflected by boundaries between the multiple layers as the terahertz wave pulse penetrates the structure, and processing the reflected terahertz wave pulses to: (i) determine whether the reflected terahertz wave pulses have a pulse width overlap; (ii) in response to determining that a pulse width overlap exists, generate modified reflected terahertz wave pulses; measure the time delays associated with each of the modified reflected terahertz pulses and (ii) determine a thickness of each of the multiple layers of materials based upon the time delay and a material refractive index of each of the materials.

Abstract: Systems for protein quantitation using a Fabry-Perot interferometer. In one arrangement, a quantitation device includes an infrared source, a sample holder, and a Fabry-Perot interferometer positioned to receive infrared radiation from the source passing through a sample on the sample holder. A band pass optical filter sets the working range of the interferometer, and radiation exiting the interferometer falls on a detector that produces a signal indicating the intensity of the received radiation. A controller causes the interferometer to be tuned to a number of different resonance wavelengths and receives the intensity signals, for determination of an absorbance spectrum.

Abstract: Methods, apparatus, and articles of manufacture to validate position parameters of a valve are disclosed. An example apparatus includes a field device, the field device further including a sensor interface to receive an unprocessed valve position parameter from a sensor and a position comparator to determine a deviation between the unprocessed valve position parameter and an interpreted valve position parameter and a valve position validator apparatus, the valve position validator apparatus further including a parameter comparator to determine if the deviation exceeds a threshold and an alert generator to generate an alert when the parameter comparator determines the deviation exceeds the threshold.

Abstract: Systems for protein quantitation using a Fabry-Perot interferometer. In one arrangement, a quantitation device includes an infrared source, a sample holder, and a Fabry-Perot interferometer positioned to receive infrared radiation from the source passing through a sample on the sample holder. A band pass optical filter sets the working range of the interferometer, and radiation exiting the interferometer falls on a detector that produces a signal indicating the intensity of the received radiation. A controller causes the interferometer to be tuned to a number of different resonance wavelengths and receives the intensity signals, for determination of an absorbance spectrum.

Abstract: Lateral flow devices, methods and kits for performing lateral flow assays are provided.

Abstract: Lateral flow device pump housings and methods of making such housings are provided.

Abstract: Methods, kits, and systems are provided for separating, immobilizing, and/or detecting analytes of one or more samples using dipsticks. A ‘dipstick’ is an object that can be embedded and subsequently removed from a separation medium, and to which analytes can be immobilized while the object is embedded in the separation medium. Examples of separation media include an electrophoresis gel of any format and a stationary phase for column chromatography. Embodiments of the present methods include applying a sample to a separation medium; separating analytes of the sample in the separation medium along a separation axis; immobilizing the analytes on a dipstick embedded in the separation medium; removing the dipstick from the separation medium; and detecting the analytes immobilized on the removed dipstick.

Abstract: Lateral flow devices, methods and kits for performing lateral flow assays are provided.

Abstract: Described are methods and compositions for sequential multiplex detection of target analytes in a sample. The method comprises contacting the sample comprising analytes immobilized on a solid support with binding agents that specifically bind an analyte in the sample, wherein each of the binding agents binds a different analyte and is attached to a single-stranded nucleic acid molecule comprising a unique sequence. The sample is then contacted with a labeled complementary nucleic acid molecule that binds the single-stranded nucleic acid molecule attached to one binding agent. The signal from the label is detected, and then reduced or eliminated. The sample can be simultaneously contacted with a second labeled complementary nucleic acid molecule that binds a different binding agent, and the signal from the second label is detected. The process is repeated for each additional analyte in the sample, thereby sequentially detecting the presence of the analytes in the sample.

Abstract: Lateral flow devices, methods and kits for performing lateral flow assays are provided.