54 results about "Chemical basis" patented technology

A fluidic device holder configured to orient a fluidic device. The device holder includes a support structure configured to receive a fluidic device. The support structure includes a base surface that faces in a direction along the Z-axis and is configured to have the fluidic device positioned thereon. The device holder also includes a plurality of reference surfaces facing in respective directions along an XY-plane. The device holder also includes an alignment assembly having an actuator and a movable locator arm that is operatively coupled to the actuator. The locator arm has an engagement end. The actuator moves the locator arm between retracted and biased positions to move the engagement end away from and toward the reference surfaces. The locator arm is configured to hold the fluidic device against the reference surfaces when the locator arm is in the biased position.

Biosensor including a device base having a sensor array of light sensors and a guide array of light guides. The light guides have input regions that are configured to receive excitation light and light emissions generated by biological or chemical substances. The light guides extend into the device base toward corresponding light sensors and have a filter material. The device base includes device circuitry electrically coupled to the light sensors and configured to transmit data signals. The biosensor also includes a shield layer having apertures that are positioned relative to the input regions of corresponding light guides such that the light emissions propagate through the apertures into the corresponding input regions. The shield layer extends between adjacent apertures and is configured to block the excitation light and the light emissions incident on the shield layer between the adjacent apertures.

A flow cell including inlet and outlet ports in fluid communication with each other through a flow channel that extends therebetween. The flow channel includes a diffuser region and a field region that is located downstream from the diffuser region. The field region of the flow channel directs fluid along reaction sites where desired reactions occur. The fluid flows through the diffuser region in a first flow direction and through the field region in a second flow direction. The first and second flow directions being substantially perpendicular.

A method and device for performing lysing on a cell-containing fluid, in which the fluid flows through a vibrating micromachined tube to physically rupture the cell walls (mechanical lysis), and/or to mix, agitate or homogenize the fluid during chemical lysis, and/or to mix, agitate or homogenize the lysate for analysis or other processing after lysing. The tube includes a freestanding portion spaced apart from a surface of a substrate on which the tube is formed. The device further includes means for vibrating the freestanding portion of the tube at a level sufficient to rupture the walls of cells in a fluid flowing through the freestanding portion (for mechanical lysing) or to mix the fluid and a chemical lysing additive within the freestanding portion (for chemical lysing).

The present invention relates to devices and chips comprising large scale chemical field effect transistor arrays including an array of sample retention regions capable of retaining a chemical or biological sample from a sample fluid for analysis. In one aspect, such an array of transistors has a pitch of 10 μm or less, and each sample retention region is located on at least one chemical field effect transistor arranged to generate at least one output signal, which signal is consistent with such related to the characteristics of the chemical or biological sample in the sample retention area. In one embodiment, said chemical or biological sample is characterized by the concentration of charged species, and wherein each of said chemical field effect transistors is an ion-sensitive field effect transistor having a floating The dielectric layer is in contact with the sample fluid and is capable of accumulating charge in proportion to the concentration of charged species in the sample fluid. In one embodiment, such charged species are hydrogen ions, whereby the sensor measures the change in pH of the sample fluid in or near its sample retention zone. The devices and chips of the present invention may be suitable for large-scale pH-based DNA sequencing and other bioscience and biomedical applications.

The invention relates to a squarylium type chemical sensor for colorimetric identification of a copper ion and a preparation method thereof, belonging to the field of chemical analysis and testing. The squarylium type chemical sensor is provided with a symmetric 2, 3, 3-trimethyl-indole squarylium compound and is prepared by the following steps of: mixing a 2, 3, 3-trimethyl-indole ring compound and squaric acid with a molar ratio of 2:1, adding mixture into a three-necked flask, adding mixed solvent of toluene and n-butanol with a volume ratio of 1:1, performing heating, mixing and back-flowing for 2-24 hours, and separating water produced in reaction with a water separator; stopping heating, cooling to the room temperature, depressurizing and evaporating to remove part of the solvent, and filtering to obtain green solid; and repeatedly washing the obtained green solid with ethyl acetate, drying at 60 DEG C, and recrystallizing with ethanol solvent to obtain pure green crystals. When the squarylium compound is applied in identification of the copper ions, the color can change in addition to changes in the absorption spectrum, the characteristics are obvious, and detection of the copper ions can be facilitated.

There are provided a method for chemical analysis and an apparatus for chemical analysis. The method for chemical analysis includes: dosing a targeted sample with ionizing gas; irradiating ion beams on the targeted sample; and analyzing the mass of fragment ions and molecular ions sputtered from the targeted sample by the collisional impact of the ion beams . The apparatus for chemical analysis includes: an ionizing gas doser that adds ionizing gas onto a targeted sample disposed in a vacuum chamber; an ion beam source that generates ion beams and irradiates them onto the targeted sample; and a mass spectrometer that analyzes the mass of fragment ions and molecular ions sputtered from the targeted sample by the collisional impact of the ion beams.

A method of performing chemical analysis is disclosed. The method includes the steps of forming carbide-derived carbon (CDC) material having a plurality of pore size, surface chemistry, and surface electrical properties. An array of the surface functionalized CDCs are used for atmospheric sampling, in which chemicals in the atmosphere are adsorbed on the CDCs. The adsorbed samples are desorbed later for analysis by a plurality of individual mass spectrometers.

One embodiment provides a method for identifying a target object of a pipe wall, including: positioning a pipe inspection robot within a pipe; emitting, using a terahertz (THz) beam source of the pipe inspection robot, a laser beam towards a target object; receiving, using a THz receiver of the pipe inspection robot, THz data related to the target object; analyzing, using a processor, the THz data; and determining, based on the analyzing, an identity of the object. Other aspects are described and claimed.

An analyzer and a structure for analysis with high performance are provided which can reduce contamination between the reagents when the valve components or a plurality of reagents are included. The present invention is a chemical analyzer to which a sample is introduced and into which a structure for holding a reagent reacting with the above described sample is housed, including a mechanism for detecting the above described sample after the above described reaction; in which the above described structure includes a reagent cartridge having reagent storing parts for storing a plurality of reagents, a connection part to which the above described reagent cartridge is connected, and a channel cartridge having reagent channels through which a plurality of the above described reagents flow, a sample channel through which the above described testing object flows, and a reaction region where the above described reagent is reacted with the above described testing object.

The invention relates to a chemical vapor deposition device and a method, and in particular relates to the chemical vapor deposition device which can measure and control the weight gain rate and the weight gain speed rate of porous carbon prefabricated parts in time and the method. The device and the method are suitable for checking the weight gain rate and the weight gain speed rate of carbon/carbon composite material or carbon/ silicon carbide composite material in the chemical vapor deposition process and can control the deposition and permeation process. The device and the method are characterized in that the device comprises a system which is composed of a set of chemical vapor deposition furnaces, a set of electronic weighing bridges and a set of industrial computers. The device and the method have the advantages that: firstly, the weight gain rate and the weight gain speed rate can be measured in time, secondly, the device can automatically recognize whether deposition is finished or not, thirdly, the time is saved and the efficiency is increased, fourthly, the process parametersof the chemical vapor deposition can be optimized, fifthly, chemical reaction characteristics which are happened in the deposition process can be automatically recognized and judged according to changes of the sedimentation rate, and procedures of water supply, gas supply, power supply, temperature raising and lowering and the like are correspondingly regulated to reach intelligent control.

The invention discloses a technological research for producing sodium acetate by comprehensively utilizing chemical waste liquid and belongs to the field of chemical engineering. In the technological research, chemical reaction is accelerated by using a microwave technique, solid-liquid separation is realized by using a distillation technique, sodium carbonate is added for reaction so as to turn acetic acid which is difficult to separate and has relatively low value into the sodium acetate which is easy to separate and has high added value, and chemical analysis is performed on the waste liquid to determine chemical components of the waste liquid and draw up a separation method; meanwhile, an optimal scheme is adopted to determine a method for adding reactants and accelerating the reaction rate; a resultant is separated and purified, and finally a qualified product is produced.

A chemical gas-phase deposition method for preparing a coated layer on the inner surface of container includes such steps as connecting a gas inlet tube to the opening of said container, inserting a guide tube for exhausting tail gas, connecting the external end of said guide tube to vacuumizing pump, and vacuum chemical gas-phase depositing to generate a coated layer. Its advantages are high uniformity and short period.

The invention relates to a full-automatic biological evaluation and chemical analysis integrated machine and method. The integrated machine comprises a pretreatment module used for enriching, concentrating and purifying a to-be-analyzed sample, a component separation module used for separating various compounds in a mother liquor to be analyzed, a monitoring and identifying module used for carrying out real-time monitoring and collecting of chromatographic signals and quantitative detection of suspicious compounds on effluent, a component collecting module used for collecting, decreaming, redissolving and transferring the effluent, a biological evaluation module used for finishing cell culture and detection of cytotoxicity effects and toxic targets, and a data processing and automatic control module used for collecting, sorting and analyzing comprehensive data. According to the integrated machine and method, efficient, stable and normalized standard operation conditions are provided for toxicity screening of compounds in a complex system; the reliability of experimental data is improved while the labor cost required by detection is reduced; and the method is a relatively high-practicality technical method for high-throughput screening work.

An inspection probe for directly measuring a transmission spectrum of a solvent oil in a transformer includes a tube having a plurality of apertures spaced along a side of the tube to allow oil to pass therethrough, and first and second optical collimators disposed at opposing ends of the tube. The first and second collimators are aligned by the tube such that incident light is transmitted through the first collimator, the tube, and the second collimator to a spectrometer

A test device is disclosed having a base (22) that is a non-sample surface and sample structures (25 (a,b)) comprising pillars (20 (a,b)).

A driver of the pulse power supply for plasma aided chemical gas-phase deposition equipment is composed of 4 drive circuits, which are isolated from each other and corrected to the secondary windings of HF pulse transformer. It features that its circuit structure can ensure high anti-interference power, so having high reliability.

In one aspect, the invention relates to an optical apparatus for producing light of a predetermined intensity from light sources of less than the predetermined intensity. In one embodiment the apparatus includes a first light source; a second light source; a double dove anti-Gaussian generator in optical communication with the first light source; and a compensator in optical communication with the second light source. Light from the first light source passes through the double dove anti-Gaussian generator and light from the second light source passes through the compensator, and are combined to produce a flattened Gaussian intensity distribution. In another aspect, the invention relates to a method and apparatus for separating an image into subunits and reading the separate subimages out of the detectors in parallel.

The invention particularly relates to a filtering method for chemical analysis. According to the technical scheme, a U-shaped pipe is full filled with the degreasing cotton in a fluffy manner to obtain a filtering pipe, the inner diameter D of the U-shaped pipe ranges from 3 mm to 5 mm, and the length L ranges from 150 mm to 200 mm; then using a to-be-filtered aqueous solution or the distilled water to completely wet the degreasing cotton filled in the filtering pipe, putting one end of the filtering pipe into a container for receiving the filtrate, and inserting the other end of the filteringpipe into the bottom of the container filled with a to-be-filtered aqueous solution, the bottom of the container filled with the to-be-filtered aqueous solution is higher than the final liquid levelof the container for receiving the filtrate; and finally, after the to-be-filtered aqueous solution is completely filtered, the filtrate and a precipitate are separately obtained. The method has the characteristics of being simple to operate and having small pollution, no filter paper blockage and no precipitation and filter penetration.