Abstract: A method for the quantification of 227Ac in a 223Ra composition comprising passing the composition through a first solid phase extraction column A, wherein said column comprises a thorium specific resin, passing the eluate of column A through a second solid phase extraction column B, wherein said column comprises an actinium specific resin and recovering the 227Ac absorbed onto the resin in column B and determining the amount thereof.

Abstract: An automatic analyzer cartridge, spinnable around a rotational axis, has aliquoting and metering chambers, a connecting duct there between, and a vent connected to the metering chamber and nearer to the rotational axis than the metering chamber. The metering chamber has side walls that taper away from a central region. Capillary action next to the side walls is greater than in the central region. A circular arc about the rotational axis passes through a duct entrance in the aliquoting chamber and a duct exit in the metering chamber. The cartridge has a downstream fluidic element which is part of a fluidic structure for processing a biological sample into the processed biological sample. A valve connects the metering chamber to the fluidic element, which is fluidically connected to the fluidic structure. The fluidic structure receives the biological sample and has a measurement structure for enabling measurement of the processed biological sample.

Abstract: A sample analyzer includes: a preparation unit configured to mix a sample with a reagent to prepare a measurement specimen; a measurement unit configured to irradiate the measurement specimen with light to acquire optical time series data; and a controller configured to divide the time series data acquired by the measurement unit into data segments, determine first regression lines respectively of the data segments, select the first regression line with the highest matching degree with the time series data, set as an analysis target region a region of the time series data matching with the selected first regression line among the time series data acquired by the measurement unit, determine a second regression line using the time series data included in the set analysis target region, and perform an analysis using the second regression line.

Abstract: Disclosed is a sample analyzer configured to analyze a concentration of a target material contained in a sample based on a value representing a slope of a regression line which is based on data values included in an interval from a start point to an endpoint. The start point is detected by a predetermined method and the endpoint is detected by a predetermined method.

Abstract: A water testing system having a water sample container that is adapted to retain a water sample, a color indicator container that is adapted to dispense a color indicator which is adapted change the color of the water sample when the water sample contains DTC, and a colorimeter that is adapted to automatically determine a blank value and the concentration of sodium dimethyldithiocarbamate in the water sample. A method for determining the concentration of DTC in a water sample comprising providing a water testing system, placing the water sample in the water sample container, placing the water sample container in the colorimeter, automatically determining a blank value, adding the color indicator to the water sample, placing the water sample container in the colorimeter, and automatically determining the concentration of DTC in the water sample.

Abstract: A flow cytometer may include a vibration isolation structure on which a flow cytometer optical system assembly is supported when the flow cytometer is in an operational configuration. A shear protection structure may be positioned to protect a vibration isolation structure from damage during handling and shipping. A flow cytometer optical system assembly may include optical component units fixed in position on a support platform with adjustability of one or more optical features in the optical component units. A light-tight dichroic mirror unit may include a rotatably mounted dichroic mirror with a locking mechanism to permit re-setting angular positioning of a dichroic mirror.

Abstract: A microfluidic device includes a channel through which a reaction solution flows. The channel passes through a reaction section having a plurality of temperature zones set at predetermined different temperatures. The channel includes, at least in the reaction section, a region where a cross-sectional area decreases in a feeding direction of the reaction solution.

Abstract: Methods for measuring certain properties of a crosslinked polycarbonate are disclosed. The storage modulus of a crosslinked polycarbonate is measured over a specified temperature range, and the average magnitude of the storage modulus over that temperature range is obtained. The average magnitude can be correlated to both crosslinking within the polycarbonate, and to the flame performance of the crosslinked polycarbonate.

Abstract: The present disclosure provides methods and composition involving increased sensitivity of compounds using mass spectrometry. In one embodiment, a method of increasing the sensitivity for detection of a carbonyl group-containing compound by mass spectrometry can comprise derivatizing the carbonyl group-containing compound with an O-substituted hydroxylamine thereby producing an oxime, resulting in enhanced sensitivity of detection by mass spectrometry, as compared to the underivatized carbonyl group-containing compound. Additionally, a method for assaying a carbonyl group-containing compound can comprise reacting the carbonyl group-containing compound in a sample with an O-substituted hydroxylamine to produce an oxime and performing analysis with mass spectrometric detection of the oxime by a mass spectrometry instrument.

Abstract: A molecular sensor includes a substrate defining a substrate plane, and a plurality of pairs of electrode sheets above or below the substrate at an angle to the substrate plane. The molecular sensor further includes a plurality of inner dielectric sheets between each electrode sheet in each pair of electrode sheets of the plurality of pairs, and an outer dielectric sheet between each pair of electrode sheets of the plurality of pairs.

Abstract: The invention relates to a detector system suitable for detection of an aromatic hydrocarbon, comprising an organic polymeric sensor material that is permeable to the aromatic hydrocarbon, the sensor material comprising a molecular probe selected from the group of methanatoboron moieties. Further, the invention relates to the use of a detector system according to the invention for the detection of an aromatic hydrocarbon, preferably an aromatic hydrocarbon selected from the group of benzene, toluene and xylene.

Abstract: Cradles for draining liquid from containers are described herein. An example apparatus includes a housing having a bottom wall, a side wall and an open top. The housing is to receive a container having liquid. The example apparatus includes a probe extending upward from the bottom wall toward the open top and is to drain the liquid from the container when the probe is inserted into the container. The example apparatus also includes a sliding lock slidably disposed within the housing that receives a cap or top of the container when the container is inserted into the housing. The sliding lock includes a key slot. The sliding lock is movable when a cap or top of the container has a matching key that engages the key slot, which enables the sliding lock to move downward to expose the probe and drain the liquid from the container.

Abstract: The invention relates to a method for analysing a sample comprising at least a first and a second scale inhibitor, which scale inhibitors are synthetic organic compounds comprising at least one ionised group. The method comprises optionally diluting and/or purifying the sample, and allowing the sample interact with a reagent comprising lanthanide(III) ion. The sample is excited at a first excitation wavelength and a sample signal deriving from the lanthanide(III) ion is detected at a signal wavelength by using time-resolved luminescence measurement. The total concentration of the first and the second scale inhibitor is determined by using the detected sample signal, and the concentration of the first scale inhibitor in the sample is determined. The concentration of the second scale inhibitor is determined mathematically by using the obtained results for the total concentration and for the first scale inhibitor concentration.

Abstract: A sample testing system includes a test receptacle support structure, an optical element positioned for transmitting electromagnetic radiation emitted or reflected by a sample disposed in a test receptacle supported by the test receptacle support structure, a cleaning member, and an automated transport arm configured to (i) detachably couple the cleaning member, (ii) move the detachably-coupled cleaning member into a position proximate to and/or contacting the optical element, and (iii) decouple the cleaning member.

Abstract: A cartridge for an automatic analyzer, formed from a cover and carrier structure, is operable for rotation about an axis and has at least one container with at least one reservoir containing at least one fluid. Each container may rotate about the axis within a cavity and relative to the carrier structure. A piercing structure opens a seal of each reservoir when the container rotates relative to the carrier structure. Each container and each cavity has a frictional element that mate and cause friction. Each container has an engaging surface which mates with an engaging surface of a rotational actuator that applies torque to rotate and open the container via the piercing structure. A fluidic structure of the cartridge processes a biological sample into a processed biological sample and enables via a measurement structure measurement of the processed biological sample. A duct is between the cavity and the fluidic structure.

Abstract: A sensitive, compact detector measures total reactive nitrogen (NOy), as well as NO2, NO, and O3. In all channels, NO2 is directly detected by laser diode based cavity ring-down spectroscopy (CRDS) at 405 nm. Ambient O3 is converted to NO2 in excess NO for the O3 measurement channel. Likewise, ambient NO is converted to NO2 in excess O3. Ambient NOy is thermally dissociated at 700 C to form NO2 or NO in a heated quartz inlet. Any NO present in ambient air or formed from thermal dissociation of other reactive nitrogen compounds is converted to NO2 in excess O3 after the thermal converter. The precision and accuracy of this instrument make it a versatile alternative to standard chemiluminescence-based NOy instruments.

Abstract: Implementations of systems and methods for detecting the failure of an selective catalytic reduction (SCR) catalyst may include a controller or one or more circuits for acquiring an ammonia to NOx ratio (ANR) value for exhaust gas flowing through an exhaust system, acquiring a conversion inefficiency value indicative of a conversion inefficiency of the SCR catalyst, acquire an NH3 slip value indicative of an amount of NH3 slip through the exhaust system downstream of the SCR catalyst, calculate a combined ANR/conversion inefficiency/NH3 slip (ACN) value based on the ANR value, conversion inefficiency value, and NH3 slip value, and indicating a failure of the SCR catalyst responsive to the calculated ACN value exceeding a predetermined threshold value.

Abstract: A method for determining a degree of aging of an oxidizing catalytic converter in an exhaust system of an internal combustion engine is provided. The method comprises generating a temporary increase in carbon monoxide levels in an exhaust gas stream, monitoring subsequent oxidizing action and determining a degree of aging of the oxidizing catalytic converter as a function of the measured oxidizing action. The method further comprises measuring a temperature rise during oxidation and correlating the aging of the converter to the speed of temperature rise.

Abstract: A kit and method for monitoring for the presence of catalyst fines in heavy fuel oil (HFO), including: a) providing a sample of HFO; b) mixing the HFO sample with a diluent composition comprising a non-polar solvent and with an aqueous reagent composition to provide a test sample, wherein the aqueous reagent composition comprises at least one water soluble inorganic salt and at least one water soluble base; c) allowing phase separation to occur in the test sample to provide an aqueous phase and an organic phase; and d) inspecting the aqueous phase of the test sample for the presence of catalyst fines. The diluent composition can consist of a non-polar solvent selected from mineral spirits, kerosene, naphtha, and heavy distillate and a phase transfer agent selected from tripropylene glycol monomethyl ether, ethylene glycol, propyl alcohol, isopropyl alcohol and butanol.

Abstract: A highly portable, paper and swab-based detection kit is provided for identifying Amphetamine, Cannabis, Cocaine, Heroin, selected synthetic Cannabinoid, and amphetamine based Cathinone type stimulants, and cannabis consumable products. A method of mass manufacture providing low cost kits with long term commercial shelf life and a method of use are also provided.