8 results about "Visible spectrometry" patented technology

Method for the continuous, at least partial, removal of foreign substances, in particular corrosion inhibitors and / or pharmaceuticals, from a fluid, in particular wastewater, by means of a cleaning device (100), wherein the cleaning device (100) comprises an inlet (20) for a fluid to be cleaned and an outlet (23) for the fluid cleaned by the cleaning device (100), comprising the steps - Specifying (S1) at least one indicator foreign substance for a group of foreign substances of the same purpose, wherein the group comprises at least the indicator foreign substance and at least one further foreign substance, in particular several further foreign substances, - Determining (S2) a neutralizing medium from a number of provided neutralizing media for the group of foreign substances, - Taking (S3) a first sample from the fluid in the inlet (20) before the cleaning device (100) and taking a second sample in the outlet (23) of the cleaning device (100), - Analyzing (S4) the samples taken, at least by means of UV / VIS spectroscopy, wherein the analysis by means of UV / VIS spectroscopy comprises the following steps: • Excitation (S4a) of the respective sample with light, in particular with light from a laser, a xenon lamp or a deuterium lamp, with at least one excitation wavelength, • Recording (S4b) at least one absorption spectrum of the light transmitted through the sample and / or at least one fluorescence spectrum of re-emitted light from the respective sample using a detection device (62), - Determining (S5) the concentration of the indicator foreign substance in the analyzed samples based on at least one of the recorded spectra, - Comparing (S6) the determined concentrations of the indicator foreign substance in the influent and effluent (20, 23) and providing a comparison result, - Adding (S7) a quantity of the neutralizing medium according to the provided comparison result to the fluid in the inlet (20) to at least partially neutralize the group of foreign substances with the lead foreign substance.

Diagnostic and treatment methods for onychomycosis are disclosed. The diagnostic method includes applying a Methylene Blue composition to nails suspected of onychomycosis infection and visually assessing the methylene blue staining on the nail following a diagnosis waiting period, as an indication of onychomycosis infection and severity. The severity of infection may be assessed qualitatively by comparison against a color guide and / or assessed quantitively by UV-Visual spectroscopy and correlating the spectral peak intensity and / or spectral shift to a quantitative onychomycosis severity scale. The diagnostic method may be combined with the photosensitizer activity of Methylene Blue to further provide a photodynamic regimen for treating onychomycosis, and a maintenance regimen for preventing re-infection of the nail.

A water-in-oil emulsion such that the aqueous phase has at least one water-soluble active and the oil phase comprises a functional elastomer, an oil, and a non-ionic emulsifier, wherein the emulsion has translucency of 30 to 70, measured with UV Vis Spectroscopy across visible spectrum 400-700 nm.

The present invention provides a photosensitive resin film that can meet requirements such as low light transmittance, anti-glare properties, and high pattern accuracy. [Solution] A photosensitive resin film having a thickness T (μm) is provided. When the photosensitive resin film is characterized by ultraviolet-visible spectroscopy, the obtained spectrum is the absorbance A at 355 nm. 355 It has and 0.003 ≤ A 355 / T ≤ 0.03. The spectrum has at least one point within the first wavelength range where the first derivative is equal to 0 and the second derivative is less than 0, and each of these points is independently A w1 / T value, where w1 represents the corresponding wavelength of the point, A w1 represents the corresponding absorbance, and 0.003 ≤ A w1 The first wavelength range is greater than 450 nm and less than or equal to 780 nm, and the thickness T is in the range of 20 μm to 200 μm.

Described is a method for quantifying and tracking an amine-based shale inhibitor in a drilling fluid through UV-visible spectroscopy. A correlation is determined between varying concentrations of an amine-based shale inhibitor in a water-based drilling fluid sample and an ultraviolet (UV)-visible absorption intensity. A calibration plot is generated based on the correlations. Samples of a circulating drilling fluid having an unknown concentration of amine-based shale inhibitor are obtained. Using the calibration plot, the concentration of amine-based shale inhibitor in the samples of the circulating drilling fluid is estimated.

The present invention provides a method for determining the concentration of a nucleic acid in an aqueous phase dispersion system, the method comprising steps a) to c): a) providing a sample of the nucleic acid; b) mixing the sample with a medium comprising: i) a zwitterionic surfactant; and optionally ii) a mobile phase selected from alcohol, acetone and dimethyl sulfoxide or any mixture thereof; and c) measuring the concentration of the nucleic acid using ultraviolet-visible spectroscopy. The invention also provides a method for determining the concentration of nucleic acid in an aqueous phase solution. The method comprises steps a) to c): a) providing a sample of the nucleic acid; b) mixing the sample with a medium comprising: i) a zwitterionic surfactant; and / or ii) a solvent selected from alcohol, acetone and dimethyl sulfoxide or any mixture thereof; and c) measuring the concentration of the nucleic acid using ultraviolet-visible spectroscopy.

Provided are methods to characterize the VP1, VP2 and VPS capsid proteins in an adeno-associated virus (AAV) particle using liquid chromatography mass spectrometry, and / or ultraviolet (UV)-visible spectroscopy. The methods generally include the steps of (a) subjecting an AAV particle to liquid chromatography to denature and then separate the VP1, VP2 and VPS capsid proteins, and (b) subjecting the separated VP1, VP2 and VPS capsid proteins produced in step (a) to UV and mass spectrometry to determine the ratio and masses of the VP1, VP2 and VPS capsid proteins in the AAV particle. In another aspect, the disclosure provides an AAV composition comprising a post-translation modification. The disclosure also provides methods for characterizing the purity of AAV compositions using liquid chromatography mass spectrometry.

Laboratory Sample Holder for UV Visible Spectrometry.