231 results about "Separate sample" patented technology

Systems, including apparatus and methods, for performing assays. These systems may involve separating sample components by partitioning them into droplets or other partitions, amplifying or otherwise reacting the components within the droplets, detecting the amplified components, or characteristics thereof, and/or analyzing the resulting data, among others.

Devices, systems and methods for use in separating sample materials into different fractions that employ bulk fluid flow for loading of samples followed by electrophoretic separation of the sample material. Devices employ configurations that optionally allow bulk sample loading with some or no displacement of a separation matrix within a separation conduit. Methods of using these devices, and systems that incorporate these devices are also envisioned.

Devices comprising a mechanism for selectively diverting a portion of a mobile phase flowing through a mobile-phase transporting conduit to a fluid-transporting conduit comprising a stationary phase for separating sample components are disclosed, as well as systems and methods for using the same.

A sample carrier comprising a top wall, a base, and a support wall joining the top wall and the base. The top wall includes aligned, spaced-apart openings on at least one side of the support wall which are sized to receive sample tubes. Sleeves depending from the top wall and circumscribing each opening direct sample tubes into sample tube holding areas. The sample tube holding areas each include one or more retaining walls extending upward from the base opposite the support wall. Springs extending outward from the support wall bias sample tubes against the retaining walls. A drip shield comprising a cover plate, a pair of through-holes for accessing sample tubes in the sample carrier, and a depending fin which separates sample tubes on opposite sides of the support wall protects against cross-contamination between sample tubes held by the sample carrier.

An interferometer configured for use in optical coherence domain (OCT) reflectometry systems is disclosed. In the preferred embodiments, efficient routing of light and a balanced detection arrangement provide a high signal to noise ratio. In a first set of embodiments, a 3×3 coupler is used to split light along separate sample and reference paths and also for combining light returning from those paths and supplying the interfered collected light to the detection system. In an alternate set of embodiments, a pair of cascaded 2×2 couplers provides a similar function. The interferometer can be used with various OCT modalities including time-domain and frequency domain approaches.

The invention discloses a vehicle and pedestrian multi-target detection method based on an improved SSD network. Step S1: a magnanimous driving video collected by a driving recorder is made into a picture input set with an appropriate size; Step S2: According to k-Means clustering method modifies the size and aspect ratio of the anchor frame in SSD network to fit the data set; Step S3, replacing the original loss function with the Focal Loss function, replacing the original Online Hard Example Mining (OHEM) mechanism, and solving the problem of positive and negative sample imbalance; Step S4,inputting a data set and training a new SSD network; Step S5: Using the trained SSD network to detect the object of the real-time input picture. According to the technical proposal of the invention, by means of clustering, Set the size and aspect ratio of the proposed anchor frame, By using Focal Loss function, the problem of the imbalance between positive and negative samples is solved, the importance of difficult-to-separate samples is increased, the occupation of memory is reduced, the training speed is improved, and the accuracy of the whole detection is also improved.

A spectroscopy system is provided which operates in the vacuum ultra-violet spectrum. More particularly, a system utilizing reflectometry techniques in the vacuum ultraviolet spectrum is provided for use in metrology applications. The system may further include the use of an array detector in combination with an imaging spectrometer. In this manner data for multiple wavelengths may be simultaneously collected. Moreover, the multiple wavelengths of data may be collected simultaneously for a two dimensional sample area. The system may further include the use of a fixed diffraction grating and does not require the use of polarizing elements. To ensure accurate and repeatable measurement, the environment of the optical path is controlled. The optical path may include a controlled environmental chamber in which non-absorbing purge gases are present or in which vacuum evacuation techniques are utilized. The controlled environment may further include a separate instrument chamber and a separate sample chamber. The controlled environment limits in a repeatable manner the absorption of VUV photons.

A centrifugal separator includes: a sample line; and a rotating apparatus portion including a rotor that has a rotor chamber. The centrifugal separator centrifugally separates a sample by supplying the sample from the sample line into the rotor and driving to rotate the rotor in the rotor chamber and discharges the centrifugally separated sample from the rotor via the sample line. The centrifugal separator includes: a sterilizing apparatus for sterilizing at least a portion with which the sample is brought into contact by making a sterilizing fluid flow through the sample line.

Various traveling wave grids and electrophoretic systems, and electrode assemblies using such grids, are disclosed. A configuration in which a voltage potential is used to load a biomolecule sample against a grid is disclosed. A unique strategy of using multiple, reconfigurable grids in such systems is also described. The strategy involves initially conducting a broad protein separation and then selectively tailoring one or more grids, and conducting one or more secondary processing operations. Related strategies and specific methods are additionally disclosed for separating samples of biomolecules and components thereof using the noted systems, assemblies, and grids.

Portable devices and methods for determining the presence of a target analyte using a portable device are provided. The portable device is preferably hand-held. A sample is injected to the portable device. A microfluidic separation is performed within the portable device and at least one separated component detected by a detection module within the portable device, in embodiments of the invention. A target analyte is identified, based on the separated component, and the presence of the target analyte is indicated on an output interface of the portable device, in accordance with embodiments of the invention.

The invention belongs to the technical field of preparing low grade hematite ore, in particular to a process for processing a low grade hematite ore. The process comprises the following steps: the ore is ground until monomer separation and then coarse and fine classification is carried out on pulp; coarse grain pulp is subject to reselecting, ferromagnetism and sieving to obtain a part of the concentrate; the fine grain pulp is conveyed to a mixing tank for separating sample, and then is conveyed to a second mixing tank to be mixed with medicine for size mixing; the mixture is pumped to a rough flotation column; the under flows of the rough flotation column is fed to a cleaning flotation column, the under flow of the cleaning flotation column is the ultimate iron ore concentrate; foam of the rough flotation column is conveyed to an one-stage scavenging flotation column by a pump; the under flow of the one-stage scavenging flotation column and the foam of the cleaning flotation column are mixed and return to the rough flotation column, and products of the one-stage scavenging flotation column are final tailings. The process has the beneficial effects of smaller occupation area by replacing a flotation machine with the flotation column, can recycle fine-grade valuable mineral effectively, improve the ultimate concentrate grade, provides reference significance for the mineral separation of the ore of the same type in China, and has obvious economic benefits and social benefits.

A sample support plate (100) for a variety of possible applications, including MALDI mass spectrometry, is disclosed. A plurality of spatially separated sample recipient sites (101) are arranged on the surface of a substrate. The recipient sites are mutually separated by areas having a different wettability than the recipient sites. They are arranged in a plurality of rows consisting of a plurality of recipient sites whose centers are regularly spaced along a first direction with a predetermined periodicity (D1), the rows being regularly spaced along a second direction perpendicular to the first direction with a predetermined centerline distance (D2). Each recipient site has a maximum lateral dimension that is preferably smaller than the diameter of a beam spot (104) of a desorption laser beam (103). In order to enable unsupervised splitting of bulk liquid samples into droplets at the sample recipient sites, the periodicity along the first direction and the centerline distance along the second direction are chosen such that each recipient sites has a next neighbor at a distance that is less than or equal to three times the minimum lateral dimension of each recipient site. In preferred embodiments, the sample recipient sites are arranged in a checkerboard-type pattern or in rows that are inclined relative to the edges of the sample support plate.

A method for retrieving a formation fluid sample through a cased borehole utilizing a sampling tool. Sampling tool straddle packers are set about a first set of perforations and annular fluid is drained from the isolated zone, through a central conduit in the tool and discharged above or below the packers. Formation fluid is induced to flow into the central conduit and into sample chambers. The packers are unset, the tool moved to the next set of perforations that are azimuthally offset from the first set of perforations and the sampling process repeated, with subsequent samples being placed in separate sample chambers.

An analyzer, preferably a desktop analyzer, includes: a component transport system; a liquid dispense or aspirating station; a member removably located on the transport system. The removable holder includes: a probe tip dispenser; a fluid supply section for holding a sample; a test element recess for holding one or more test elements or test element holders, wherein the removable holder is configured to contain the test element recess such that a test element can be acted upon by the liquid dispense or aspirating station, while the test element is in the recess; and a measurement device to analyze a sample. Another aspect provides a removable centrifuge model on the transport system, which separates samples, such as whole blood before analysis.

An improved endoscopic tool easily and efficiently obtains samples of multiple polyps from a patient by debriding one or more polyps and retrieving the debrided polyps without having to alternate between using a separate cutting tool and a separate sample retrieving tool and may be used with an endoscope.

An air freshener package for containing an air freshener and a fragrance emitting substance. The blister type package has one compartment for the air freshener unit and another sample compartment forming a bubble or blister for a separate sample of the scent emitting material. The air freshener unit and sample compartment have a corresponding fragrance. The sample compartment forms a pressure responsive selected area on the package and is designed of a rupturable ventable material. The sample compartment can be deformed by finger pressure decreasing the volume of the compartment and thereby causing a puff of scented air to exhaust to atmosphere through a discharger opening. In an alternate embodiment, the finger pressure is sufficient to rupture a fragrance containing bead filled with fragrance air or liquid which emits a fragrance which is released through a vent or a pin hole formed in the second sample compartment to the environment. The user can sample the product while the integrity and seal of the air freshener unit and fragrance substance therein remains intact and fresh.

Apparatus for separating the components of a sample by OPLC type chromatography using liquid under pressure, the apparatus comprises a stationary phase forming one or more sample treatment paths and means for feeding moving phase to one end of the stationary phase, with means at the opposite end of the stationary phase for collecting moving phase, means for injecting moving phase also being provided at the sides of the stationary phase in order to eliminate edge effects in the fronts of sample components and in order to separate treatment paths from one another.

The invention belongs to the technical field of cell culture and particularly discloses a medical automatic cell production device and a production method thereof. The medical automatic cell production device comprises a laminar-flow sterile sealed chamber, in which a sample bottle (such as a blood bottle) is arranged; and a cell separation device for separating samples, a cell rinsing device, a cell induction culture device, a cell proliferation culture device and cell filtering, rinsing and recycling devices for filtering, rinsing and recycling cultured cells are connected through connecting pipes in sequence behind the sample bottle in the sealed chamber. By the invention, the cell separation, the induction culture, the large-scale proliferation culture, cell filtering, rinsing and recycling processes and the like of each patient can be completed in an independent system which is completely sealed and sterile, and therefore the constant conditions of a cell culture environment are ensured, the effector cell proportion is greatly improved, a GMP standard is reached and treatment requirement of patients can be satisfied. In addition, the medical cell production method has high automation degree, simple and convenient operation process, small operation error and high repeatability and can be widely applied to different working environments and occasions, such as medical treatment, biopharming and the like.