Abstract: A system for sampling a liquid includes a sample fluid conduit including a membrane having pores. The membrane prevents the passage of the sample liquid through the pores at a first pressure of the sample liquid in the sample fluid conduit. A surface sampling capture probe has a distal end. The capture probe includes a solvent supply conduit and a solvent exhaust conduit. A solvent composition flowing at the distal end of the capture probe establishes a liquid junction with the membrane and establishes a second pressure within the liquid junction at the membrane. The second pressure is lower than the first pressure. Sample liquid will be drawn through the pores of the membrane by the second pressure at the liquid junction. A method for sampling a liquid and for performing chemical analysis on a liquid are also disclosed.

Abstract: A device for calibrating a laser level includes a base platform, a target, and an image recognition device. The base platform is configured to support the laser level that is to be mounted on the base platform at a first position. The target is arranged at a second position of the base platform and configured to receive a laser. The image recognition device is configured to obtain images of lasers projected on the target before and after the laser level rotates a first angle, determine, based on an image recognition result of the images, positions of the lasers emitted by the laser level to determine a deviation distance, and determine whether the laser level needs to be calibrated based on the deviation distance. The deviation distance is determined by position data of the first position and the second position, and the first angle.

Abstract: The invention relates to a method for determining the intrinsic viscosity [?] of an aqueous polymer solution at a temperature T, wherein the aqueous polymer solution comprises at least one acrylamide-based polymer in an aqueous solvent, the aqueous solvent having a salinity of from 6 to 250 g/L, the method comprising the steps of: —providing a single universal relation R1 between (i), the product of polymer concentration and intrinsic viscosity C·[?], and (ii) specific viscosity at zero shear rate ?sp; —performing a measurement of the dynamic viscosity of the aqueous polymer solution at one polymer concentration C1, at temperature T and at various shear rates; —determining from said measurement the zero-shear viscosity ?0 of the aqueous polymer solution at polymer concentration C1 and at temperature T; —calculating the specific viscosity at zero shear rate of the aqueous polymer solution at polymer concentration C and at temperature T as ?sp=(?0??s)/?s, where ?s is the zero-shear viscosity of the aqueous solv

Abstract: The invention discloses an atomic fluorescence analysis method and device using water as a carrier fluid, belonging to the atomic fluorescence analysis in the field of analytical chemistry; the method is to replace hydrochloric acid and a reducing agent with water as the carrier fluid in the conventional sampling and fluid delivery process to carry the test liquid and reagent into the reactor to complete a reaction. The invention effectively overcomes the memory effect by using water as the carrier fluid and improves the determination sensitivity and accuracy, which saves a large amount of high-purity hydrochloric acid and reducing agent at the same time, greatly reducing the analysis cost, and significantly improving the operating environment, which is the innovation of atomic fluorescence analysis technology.

Abstract: A water gauge for on-site monitoring and early warning includes an alarm part, a control part and a retractable part. The retractable part is fixedly connected with the alarm part at the top, and the control part at the bottom; the alarm part is electrically connected with the control part through a wire; the control part compares the water level measured by the retractable part with a preset threshold, to determine whether the alarm part needs to give an alarm. When the water on the road rises to the warning line of 30 cm set on the water gauge during a rainstorm, the warning light on the top of the water gauge will start to flash, and the water gauge will give an alarm through the speaker, reminding the pedestrians and vehicles not to pass the section for the time being.

Abstract: An inertial measurement unit (IMU) device includes a circuit board assembly including a rigid circuit board and a flexible circuit board, an IMU sensor disposed on the rigid circuit board, and a heat preservation system. The IMU sensor is electrically connected to an external element through the flexible circuit board to transmit at least one of a signal or power between the IMU sensor and the external element. The heat preservation system includes a heat source, a heat preservation body with a receiving space to accommodate the IMU sensor, and a heat conductive member configured to transfer heat from the heat source to the IMU sensor to maintain the IMU sensor at a preset temperature. The heat conductive member includes an electrically insulating and thermally conductive silicone.

Abstract: Systems and methods are described to concentrate and homogenize a remote sample for analysis. A sample concentration and homogenization system embodiment includes, but is not limited to, at least a first valve, at least a first column fluidically coupled to the first valve, a flow meter fluidically coupled with the first column when the first valve is in a first flow path configuration to measure an amount of the liquid sample passed through the first column, and a homogenization valve including a sample homogenizing loop in which the concentrated sample is homogenized.

Abstract: Example methods and apparatuses for liquid substance vaporization and concentration level determination are provided. An example apparatus may include a constant temperature chamber having a vaporization housing that includes a capillary component disposed within and a syringe assembly configured to inject a liquid substance to the capillary component. An example method may include determining an injection rate for injecting the liquid substance to the capillary component, determining a flow rate of the gaseous substance in the vaporization housing, and calculating a concentration level of a vaporized substance based on the injection rate and the flow rate.

Abstract: Aspects of the disclosure relate to demarcation templates for demarcating a test area on a test surface and for providing visual guidance to a user to precisely and accurately swab the test surface in order to determine the presence and/or concentration of an analyte of interest on the test surface. In one aspect, the analyte of interest is a hazardous contaminant. Some templates can include alignment markings around the border demarcating the test area to provide such guidance to users, and can include graphical use instructions on a removable central portion of the template. The template can be adhesive to be securely fixed to the test surface for accurate demarcation of the test area throughout sampling.

Abstract: A fluid sampler system includes a fluidic head including a gas aperture capable of communication with a pressurized gas source, a liquid conduit capable of communication with a sample reservoir, and a seal capable of forming a compression seal to the sample reservoir when gas pressure is applied to the sample reservoir through the gas aperture and capable of displacing a portion of the sample through the liquid conduit; and a positioning apparatus capable of positioning the fluidic head and the sample reservoir in communication with one another. A method for providing an aliquot of sample, includes forming a releasable compression seal to a reservoir including a liquid sample; pressurizing the reservoir with compressed gas; displacing an aliquot of the sample from the reservoir; and transferring the displaced aliquot of the sample to a location.

Abstract: A method includes measuring a temperature of a semiconductor die, in which the semiconductor die includes a piezoelectric device, a pyroelectric device, and a memory. The method further includes receiving a first signal from the pyroelectric device, and based on the first signal, determining a parameter to be combined with a second signal from the piezoelectric device. The method further includes storing the parameter and the measured temperature into the memory.

Abstract: The disclosed techniques enable the installation of a level sensor capable of continuously detecting a level of fluid in a vessel or tank and capable of being integrated in a larger control system. Advantageously, sensor head of the disclosed level sensor can be installed on existing installations with an existing displacer or float and an existing member or rod. The disclosed techniques thus enable process plants to easily and affordably replace pneumatic level sensors with a more environmentally friendly option.

Abstract: A system for a deep-sea planktonic microorganism in-situ concentration, temperature maintaining and pressure maintaining sampling is provided and includes a sampling cylinder body with double layer structures, the sampling cylinder body is provided with a plug-shaped inner cavity, the plug-shaped inner cavity is provided with a transfer water outlet and a water inlet connected to a water inlet component, the plug-shaped inner cavity is connected to an end cover, the plug-shaped inner cavity is connected to a filter part, the sampling cylinder body is provided with a sampling water outlet, the sampling water outlet is respectively connected to a pressure maintaining device and a water outlet pipe, a temperature maintaining material layer and a temperature control component are connected between the double layer structures, and the temperature control component is electrically connected to a controller. The system can complete sampling on the premise of maintaining in-situ pressure of samples.

Abstract: A sample injection method for liquid chromatography is performed with an injection valve having a waste port, two sample loop ports, and two high-pressure ports. One high-pressure port can be connected to a pump and the other high-pressure port can be connected to a chromatography column. A sample loop is connected to one of the sample loop ports on one end and to a pump volume of a sample conveying device on the other end. A section of the sample loop can be separated to facilitate receiving a sample fluid in the sample loop. A control unit controls the injection valve and the sample conveying device. The sample injector allows a sample to be loaded into the sample loop and then pressurized to an operating pressure prior to injecting the sample into the chromatography column. The sample loop may also be isolated from the operating pressure for facilitating depressurization of the loop.

Abstract: A method of testing identification of pathogens for a biological Completely Automatic Public Turing Test To Tell Humans And Computers Apart (bCAPTCHA) system comprising: automatically electing a first electronic image for a participant with a computing system, where said electronic image comprises an image of a biological pathogen; presenting options for participant to select to identify characteristics of the pathogen; processing responses from participant. A method of testing identification of pathogens for a biological Completely Automatic Public Turing Test To Tell Humans And Computers Apart (bCAPTCHA) system comprising: automatically electing a first electronic image for a participant with a computing system, where said electronic image comprises an image of a biological pathogen; presenting options for participant to identify the pathogen; processing responses from participant.

Abstract: The disclosure relates to an electronic device and a method for determining the kind and the state of a food stored therein. The electronic device includes a storage container in which the food is stored, a gas detecting device for detecting a gas included in air in the storage container, and at least one processor that identifies a time point, at which the gases included in the air in the storage container are extracted, on the basis of at least one temperature profile of the gas detecting device, and identifies a time point at which the gases included in the air in the storage container are extracted, on the basis of a configuration of at least one adsorption material included in the gas detecting device.

Abstract: A system, method and footwear sensor unit a footwear sensor unit removably attachable to footwear, the footwear sensor unit including: an Inertial Measurement Unit (IMU) including a 3-axis accelerometer and a 3-axis gyroscope, the IMU adapted to gather sensor data of detected movements of the footwear; and a storage device in electronic communication with the IMU, the storage device for storing the sensor data; and a communications module in electronic communication with the storage device, the communication module configured to transmit data to an external computing device.

Abstract: The present invention discloses a fluid (e.g., urine) collecting vessel comprising a collector with an extension lip, wherein the collector is configured to fit inside a toilet with the extension lip placed on a toilet seat disposed on top of the toilet; a mechanism configured for extracting a sample of urine from inside the collector. The invention also disclosed methods for collecting fluids along a long time period comprising steps of providing a collector with an extension lip; placing the collector inside a toilet with said extension lip placed on a toilet seat disposed on top of the toilet; upon collecting urine inside the collector, extracting a sample of urine from inside the collector.

Abstract: A measurement system including a measurement device and at least a first probe unit and a second probe unit is disclosed. The first probe unit and the second probe unit are each connected to the measurement device in a signal transmitting manner. The measurement device includes a control circuit. The first probe unit includes an interface module being configured to receive a user input, to generate an input data signal based on the received user input, and to provide the input data signal to the control circuit. The control circuit is configured to generate and provide a control signal at least to the second probe unit based on the input data signal. At least the second probe unit is configured to adjust an operational parameter based on the control signal, wherein the operational parameter relates to a measurement parameter to be measured Moreover, a method for operating a measurement system is disclosed.

Abstract: A device for a cigarette tipping paper anti-adhesion test is disclosed. The device includes the following components: an upper cover (1), a plurality of upper cover semi-cylinders (11) inside the upper cover, having the same radius and arranged in parallel, and a box (2) with a plurality of holes (211) on the box upper surface (21), connected with the inner cavity of the box (2). Each upper cover semi-cylinder has a cross-section with a bow shape. The side wall of the box (2) also has an opening (22). A method for testing anti-adhesion of the cigarette tipping paper using the device is also disclosed. The present device can qualitatively and quantitatively simulate adhesion of tipping paper in various conditions.