Abstract:
A method includes receiving a sample. The method also includes applying a denaturing agent to a first portion of the sample, and detecting, in response to the application of the denaturing agent, a first measure from the first portion of the sample. The method also includes modifying the temperature of a second portion of the sample and detecting, in response to the modifying the temperature of the second portion of the sample, a second measure from the second portion of the sample. The method also includes computing thermodynamic information for the sample based on the indication of the first measure, and computing kinetic information for the sample based on the indication of the second measure. The method also includes computing, based on the thermodynamic information and the kinetic information, an indication of temporal stability of the protein component of the sample.
Abstract:
An apparatus for evaluating physicochemical properties of sample materials contained in an array of vessels includes: a light detector; a light source for transmitting a light beam through the sample material in a vessel to the light detector; an analyzer for processing data from the light detector to determine concentration-related properties of the sample material as a function of time; and a mixing system. The mixing system includes: a plurality of magnetic stirrer elements, each for being placed in a sample material in a different one of the array of vessels; an array of magnetic drive elements, each associated with a different one of the array of vessels and being magnetically coupled with a magnetic stirrer element in an associated vessel; and a drive mechanism coupled to the array of magnetic drive elements for simultaneously moving each of the magnetic drive elements relative to an associated vessel.
Abstract:
A portable system and method for measuring the concentration of multiple chemical or biological substances where an onsite analysis of such substances is needed. The new and original handheld sensor system uses a disposable optical test element and a spectroscopic detector that measures the test element response to specific analytes through a change in light absorbance, luminescence, and other forms of light-based response. In this way, reflection light intensities indicative of the test element response can be used to measure the concentration of the target analytes. The sensor system is also capable of being interfaced to an information processing unit or computer so that analytical data can be manipulated or stored electronically.
Abstract:
(i) regulating gas pressure in a treating chamber, where a sample is being dry etched at a pressure at which a clear emission line spectrum can be contained; (ii) converting the gas to a plasma; and (iii) monitoring the etching state of the sample from the change of intensity of the emission line spectrum of the plasma with time. The monitoring apparatus comprises (a) an wxhaust discharging gas from the treating chamber to a subchamber; (b) a plasma generator converting the discharged gas to a plasma; (c) a pressure regulator regulating fag pressure in the subchamber; and (d) a spectrum detector for detecting the emission line spectrum of the plasma and changes in its intensity with time.
Abstract:
A portable system and method for measuring the concentration of multiple chemical or biological substances where an onsite analysis of such substances is needed. The new and original handheld sensor system uses a disposable optical test element and a spectroscopic detector that measures the test element response to specific analytes through a change in light absorbance, luminescence, and other forms of light-based response. In this way, reflection light intensities indicative of the test element response can be used to measure the concentration of the target analytes. The sensor system is also capable of being interfaced to an information processing unit or computer so that analytical data can be manipulated or stored electronically.
Abstract:
This invention concerns spectroscopy apparatus comprising a light source (101) arranged to generate a light profile (110) on a sample, a photodetector (103) having at least one photodetector element (104) for detecting characteristic light generated from interaction of the sample with light from the light source (101), a support (109) for supporting the sample, the support (109) movable relative to the light profile (110), and a processing unit (121). The processing unit (121) is arranged to associate a spectral value recorded by the photodetector element (104) at a particular time with a point on the sample predicted to have generated the characteristic light recorded by the photodetector element (104) at the particular time based on relative motion anticipated to have occurred between the support (109) and the light profile (110).
Abstract:
An apparatus for the determination of analytes in liquid samples is disclosed. The apparatus comprises in fluid connection a positive-displacement pump (18), a chamber (16) in which the reagents specific for the analytes to be determined can be delivered, a detector (23), a second chamber (43) and a device (4) for the introduction of sample within the circuit and for the discharge. The apparatus also provides for controlling flow means and means (7) for the control of the operation of each component. A process for the determination of said analytes is also disclosed.