338 results about "Collection sample" patented technology

The present invention provides a method and a device that utilizes capillarity-mediated, chromatographic transport, for the qualitative or semi-quantitative analysis of selected analytes in liquid samples. The device utilizes an applicator / collection device for collecting and administering the sample to the flow path such that reagent(s) flow through the applicator / collection device, washing the sample into the reaction pathway. The device farther utilizes an air gap between the initial location of the reagent and the reaction pathway to funnel the reagent efficiently through the sample so as to collect all or substantially all of the sample and make it available for the reaction(s).

The invention provides a building method for a rhubarb medicinal material trueness / falseness and species prediction model. According to the model, category identification of quality rhubarb, fake rhubarb and three rhubarb species is realized on the basis of a gas chromatography-mass spectrum technology in combination with partial least square discriminant analysis. The building method comprises the following steps: (1) collecting samples; (2) preparing the samples; (3) acquiring GC-MS data; (4) performing data processing and multivariate analysis, wherein cluster analysis and principal component analysis are performed by comparing the differences of chromatographic behaviors of rhubarb of different sources; (5) building the prediction model; and (6) verifying the model. Two built category prediction models are proved to have 100 percent identification accuracy and prediction accuracy. Through adoption of the method, trueness / falseness and species identification of rhubarb are realized by modeling, so that a reliable conclusion and high integrity are achieved; the defects of an existing method are overcome; and a more feasible and reliable new thought is provided for the trueness / falseness and species identification of rhubarb medicinal materials and decoction pieces.

A tooth treatment device includes a detector that detects a marker of oral health and a fluid ejector that ejects fluid against teeth in response to the detected marker. The device can include a housing configured to be held on hand, the fluid ejector being positioned at an end of the housing. The fluid may include a liquid, a medicant, a cleansing solution, cleaning particles, or any combination thereof. The medicant can include any combination of a chelating agent, fluoride, a fluorescent dye, a bacterial specific probe, and a biochemical specific biomarker. Further, the device can include a servo controller controlling pressure of ejected fluid in response to the detected marker and a sensed surface condition, latter including for example, a mechanical property of tissue. The device may include a pressure sensor that senses pressure of the fluid in the ejector. Also included may be a distance sensor that senses distance of the ejector from a tissue surface. The surface condition may be sensed using the sensed pressure, sensed distance, or any combination thereof. In some embodiments, the fluid ejector comprises a stationary magnet assembly providing a magnetic field and a coil assembly, slidably disposed with respect to the magnet assembly, the coil assembly driving ejection of the fluid jet. A method of tooth treatment includes detecting a marker of oral health and controlling ejection of a fluid jet against the tooth responsive to the detected marker. In some embodiments, detecting the marker includes detecting plaque and the ejection is controlled to clean the plaque. Detecting the marker can include collecting a sample from an oral cavity.

A multiple-chamber container for sampling, storing and preserving for later testing a sample. A swab having a foam tip is used to collect a sample (the sample must have some liquid component, e.g., saliva, urine, blood, etc.). After the foam tip is used to collect a specimen, the swab is inserted into the container where the foam tip is compressed and a portion of the specimen that was sampled is diverted into each chamber. The swab is locked into the container thereby sealing the specimen inside. At least one test strip is positioned inside one of the chambers to test the sample. The sample in the other chamber(s) are separated and can be stored for a period of time. A preservative may be used to help keep the specimen during storage.

A method of investigating a solid sample, in particular a geological sample, such as a borehole core sample, includes the steps of positioning the sample on a sample support device, positioning a hyperspectral camera device, so that a line-shaped surface region of the sample is covered by a field of view of the hyperspectral camera device, illuminating the sample on the sample support device, moving the hyperspectral camera device and the sample support device relative to each other, wherein the field of view of the hyperspectral camera device is moved along a scanning direction over the surface of the sample, and collecting a hyperspectral image of the sample during the moving step, wherein the hyperspectral image is composed of multiple hyperspectral line images.

The invention belongs to the field of biological and medical detection, and relates to a system for separating CTCs (circulating tumor cells) in a blood sample from a mixed cell group in high purity. The separation system for the CTCs comprises a sample preparation module, a sample injection module, a first micro-fluidic chip, a release module and a collection module, wherein the sample preparation module is used for processing blood into a detection sample; the sample injection module is used for injecting the detection sample into the first micro-fluidic chip; the first micro-fluidic chip is used for extracting the CTCs in the detection sample; the release module is used for separating the CTCs from the first micro-fluidic chip and obtaining a collection sample; and the collection module is used for collecting the collection sample. According to the technical scheme, compared with the prior art, the separation system for the CTCs is simple, easy to implement, lower in cost, simple to operate and high in automation degree.