摘要:
Systems and methods identify a product ion that does not include an interference. A full product ion spectrum for a mass range of an analyte in a sample is received from a tandem mass spectrometer. A first set of one or more peak parameters is calculated for a product ion in the full product ion spectrum using a first XIC window width. A second set of one or more peak parameters is calculated for the product ion using a second XIC window width. The product ion is identified as not including an interference, if the first set of one or more peak parameters and the second set of one or more peak parameters are substantially the same. The product ion is further confirmed or determined to be from the analyte and not from a matrix of the sample by correlating the product to a precursor ion of the analyte.
摘要:
A microfluidic manipulation system is provided that includes a blade for manipulating deformable material and at least one movable support that is capable of moving the blade into contact with a microfluidic device including a deformable feature. When the microfluidic device is operatively held by a holder, a movable support can position the distal end of the blade relative to the microfluidic device and move the contact tip surface of the blade such that it deforms the deformable feature.
摘要:
A device, system, and method are provided for thermally treating a fluid processing device. According to various embodiments, a system is provided that can include a thermal device and a fluid processing device holder. The thermal device can include a first block having a thermal conductivity greater than 0.5 Watt per centimeter Kelvin (W/cm·K), a second block having a thermal conductivity greater than 0.5 W/cm·K, and a heat-pump device disposed between the first block and the second block. The heat-pump device can transfer thermal energy from at least one of the first block and the second block to the other of the first block and the second block. The fluid processing device holder can hold a fluid processing device in a heat-transfer position with respect to the first block and the second block. The fluid processing device can be a microfluidic device.
摘要:
Generally, the present invention provides a device and method for accurately locating a multi-well plate at a plate-support location, e.g., a work surface, of an automated laboratory machine, such that one or more acting members of the machine, such as an array of pipette tips, optical sensors, or the like, can accurately address and operate on the individual wells. Interior and/or exterior surface regions of one or more wells of a multi-well plate are used as the primary plate features engaged by locating structure of the machine. In one particular embodiment one or more upwardly tapered projections extend from a plate-support surface of a plate-handling machine for mating engagement with the exterior surface regions of one or more wells. In another embodiment, the exterior surface regions along one or more well bottoms are engagingly received within bores, or other receiving structure, formed on the place-support surface of a machine. In a further embodiment, one or more downwardly extending projections depend from an acting-member support, along with the acting members of a machine. Introduction of the projections into some of the wells of a multi-well plate serves to align the acting members with the plate's other wells.
摘要:
A method for representing scalar data dependencies for an optimizing compiler wherein a global scalar data dependence graph is created to represent all of the scalar objects in an entire program. The scalar data dependencies are represented as three chains: a use-definition chain (ud); a definition-use chain (du) or a definition-definition chain (dd), and is created for the entire program and is maintained during the entire compilation or assembly of the program. The method for determining scalar data dependences for the entire program starts by analyzing the scalar data dependences within each basic block, in a single pass, processes all definitions and uses of all non-array data objects in the basic block, including simple variables and complex data objects such as records, unions, pointers and procedure calls in the presence of aliasing. From these objects, information is collected, such as whether the data objects are upwardly or downwardly exposed, pointers, pointer aliases, aggregate objects, array objects, uses, definitions; whether they are calls, indirect uses, or indirect definitions.
摘要:
Systems and methods of manipulating discrete volumes of a first fluid in a second fluid are provided. In some embodiments, discrete volumes can be formed in a conduit. In other embodiments, addition fluid can be added to a discrete volume in a first conduit by injecting the addition fluid at a relatively higher pressure. In some embodiments, discrete volumes that normally would not coalesce can be manipulated to be merged together.
摘要:
Methods and systems are provided for triggering an information dependent mass spectrometry scan in real time. A mass spectrometry scan of a separating sample mixture is performed by a mass spectrometer at each time interval of a time period. The mass spectrometer receives the separating sample mixture from a separation device. It is determined at a certain time interval that a received mass spectrometry scan at the time interval and one or more preceding received mass spectrometry scans include two or more time-varying ion signals that represent two or more fragment ion transitions of a known compound. If a characteristic of the two or more time-varying ion signals meets a selection criterion, the mass spectrometer is instructed to perform a dependent mass spectrometry scan of the separating sample mixture for a precursor ion of the known compound at the time interval.
摘要:
A system and method are provided for large volume sample amplification adaptable for use with conventional PCR-based reactions as well as emulsion-based PCR reactions. A sample is retained in a pouch or flexible bag which permits bulk PCR amplification with efficient heat-transfer properties. For applications involving emulsion-based PCR amplification, the system and method provide improved uniformity in emulsion amplification and can be used to amplify large or small volume emulsions rapidly and reproducibly.
摘要:
A device, system, and method are provided for thermally treating a fluid processing device. According to various embodiments, a system is provided that can include a thermal device and a fluid processing device holder. The thermal device can include a first block having a thermal conductivity greater than 0.5 Watt per centimeter Kelvin (W/cm·K), a second block having a thermal conductivity greater than 0.5 W/cm·K, and a heat-pump device disposed between the first block and the second block. The heat-pump device can transfer thermal energy from at least one of the first block and the second block to the other of the first block and the second block. The fluid processing device holder can hold a fluid processing device in a heat-transfer position with respect to the first block and the second block. The fluid processing device can be a microfluidic device.
摘要:
A device is provided that can include at least one gas trap that can be arranged in fluid communication with a sample-containment feature formed in or on the device. The gas trap can be arranged to trap gas or air displaced from the sample-containment feature as the sample-containment feature is loaded with a liquid. The trapped gas in the gas trap can assist in breaking-up and expelling the liquid from the sample-containment feature during a subsequent liquid transfer operation, for example, to an adjacent sample-containment feature. Systems for processing such a device and methods using such a device are also provided.