摘要:
The present invention refers to a method for atomic absorption spectroscopy of an analyte which is contained in a sample to be analyzed and which is converted into free atoms in an absorption volume of an atomizer, said method comprising the steps of (a) position- and time-dependent measuring of the atomic absorption over the cross-section of the absorption volume and (b) simultaneous determination of surface temperatures of the atomizer. This method is characterized by the steps of (c) reconstructing the temperature field in said absorption volume on the basis of the surface temperatures determined, (d) determining position- and time-dependent numbers of particles of the absorbing atoms of the analyte on the basis of the measurements of the position- and time-dependent atomic absorption and the absorption profile that has been determined with due regard to effects influencing the line profile of the analyte and with due regard to the reconstructed temperature field, and (e) determining the time-dependent total number of the absorbing atoms of the analyte on the basis of the position- and time-dependent numbers of particles. In addition, the present invention concerns a device for carrying out this method.
摘要:
The object of the present invention is to provide a disease type and/or condition determination method and apparatus that enables rapid and reliable determination by spectral analysis of the energy state of cells or drugs, and a drug screening method and apparatus that enables efficient screening of a target drug. In order to achieve this object, for example, the disease type and/or condition determination method according to the present invention determines disease type and condition by measuring the absorption spectrum in, for example, the infrared region for cells obtained from a specimen, and determining whether or not a coinciding absorption spectrum exists for those measurement results by using as indices at least two infrared absorption spectra.
摘要:
A substrate detection sensor is operatively connected to a door moving mechanism for opening/closing a front door with respect to a sealed container accommodating therein a plurality of substrates. The substrate detection sensor enters the sealed container and detects the substrates successively as it is lowered integrally with the front door, and retracts from the sealed container when all of the substrates have been detected.
摘要:
The antioxidant power of an organic or inorganic liquid is determined by causing it to enter into competition with bathocuproine (BC) in a copper sulphate solution. Bathocuproine (BC) forms stable complexes with the monovalent Cu. Such a reaction is specific for Cu(I) and not for divalent Cu(II). Cu(II) in solution can be reduced to Cu(I) by a number of reducing compositions belonging to a class of compositions consisting prevailingly of both liposoluble and water soluble non-enzymatic antioxidants. When the reaction occurs in a bathocuproine (BC) buffer, the complex being formed is characterized by the concentration of the reducing agents and then, by good approximation, of the antioxidants present in the system. The quantitative analysis of such a reaction can be easily made by spectrophotometry at 480 nm both by macro- and micromethods with the use of a number of reducing standard compositions with known concentrations.
摘要:
The invention relates to a microfabricated device for use in measuring the physical properties of compounds, where the properties measured using such devices are those which involve partitioning of the compound between two phases, measuring partition coefficients, distribution coefficients, acid-base dissociation constants, solubility and vapour pressure. The device comprises a microfabricated conduit, in which two fluids flow creating at least two phases between which the compound may partition, and a detector for measuring the amount of compound in each or both fluids.
摘要:
A method and an apparatus system feature detecting faults in process conditions of a plasma-based semiconductor processing system by sensing the spectral emissions of the plasma. As a result, the method includes sensing optical energy produced by the plasma and identifying the fault in the process conditions as a function of one or more of the plurality of spectral bands. To that end, the apparatus includes a detector in optical communication with the processing chamber to sense optical energy generated by the plasma, and a spectrum analyzer, in electrical communication with the optical detector. The spectrum analyzer resolves the spectral bands and produces information corresponding thereto. A processor is in electrical communication with the spectrum analyzer, and a memory is in electrical communication with the processor. The memory includes a computer-readable medium having a computer-readable program embodied therein that controls the system to carry-out the method.
摘要:
A system and method for characterizing protein molecules. A protein molecule of interest is isolated from other types of protein molecules. The protein molecule of interest is modified to a one-dimensional structure from the natural three-dimensional structure of the protein molecule. Each of a first type of amino acid residue of the protein molecule is labeled with a first tag. Each of a second type of amino acid residue of the protein molecule is labeled with a second tag. The first and second tags impart to the protein molecule a detectable set of characteristic ancillary properties that facilitates distinction of the protein molecule of interest from other types of protein molecules. When these ancillary properties are detected, a fingerprint of the protein molecule is revealed. A listing of known protein molecules and of the fingerprints corresponding to each of the known protein molecules serves as a library to facilitate identification of unknown proteins. A fingerprint of a protein molecule of interest determined in the same manner as the fingerprints of known proteins listed in the library is compared with fingerprints of the known protein molecules to identify the protein molecule of interest.
摘要:
Methods and apparatus for screening diverse arrays of materials using infrared imaging techniques are provided. Typically, each of the individual materials on the array will be screened or interrogated for the same material characteristic. Once screened, the individual materials may be ranked or otherwise compared relative to each other with respect to the material characteristic under investigation. According to one aspect, infrared imaging techniques are used to identify the active sites within an array of compounds by monitoring the temperature change resulting from a reaction. This same technique can also be used to quantify the stability of each new material within an array of compounds. According to another aspect, identification and characterization of condensed phase products is achieved, wherein library elements are activated by a heat source serially, or in parallel. According to another aspect, a Fourier transform infrared spectrometer is used to rapidly characterize a large number of chemical reactions contained within a combinatorial library.
摘要:
A method of analyzing a sample gas for the presence of at least one gas impurity by combining a stream of sample gas with a stream of carrier gas to provide a combined stream of gas, directing the combined stream of gas through a column which preferentially removes the sample gas from the combined stream to produce a retentate stream of gas, and analyzing the retentate stream of gas for the presence of the at least one gas impurity.