摘要:
Described is a process for the separation of a sample mixture for analytical reason based on two-dimensional gel electrophoresis. The method is involving a first separation in a first gel strip on the basis of isoelectric points and a second separation in a second gel on the basis of molecular size. When starting the separation in the second dimension the buffer solution for transferring the compounds separated in the first dimension into the second dimension gel is containing sodium dodecyl-sulfate (SDS) and by applying an electric field the SDS migrates electrokinetically into the first gel strip, and the compounds are being complexed simultaneously with SDS.
摘要:
Described is a process for the separation of a sample mixture for analytical reason based on two-dimensional gel electrophoresis. The method is involving a first separation in a first gel strip on the basis of isoelectric points and a second separation in a second gel on the basis of molecular size. When starting the separation in the second dimension the buffer solution for transferring the compounds separated in the first dimension into the second dimension gel is containing sodium dodecyl-sulfate (SDS) and by applying an electric field the SDS migrates electrokinetically into the first gel strip, and the compounds are being complexed simultaneously with SDS.
摘要:
A disposable electrophoresis device for separation of a complex protein sample, using two-dimensional gel electrophoresis and method thereof are disclosed. The device comprises a carrier with a first area for a first dimension gel strip and a second area for a second dimension gel, where the two areas are directly in contact with each other. The device further comprises a body made of a hard component and an elastic component layer at a variable distance from the carrier. The body further comprises at least one cavity for external actuation of at least one valve, wherein the valve is represented by the elastic component layer.
摘要:
In an arrangement to supply ink to a print head unit having a print head, an input, and an output, a back-pressure tank having ink is provided and connected with the input of the print head unit. A degassing unit for ink and having an input and an output is also provided. A first selector valve is connected to the degassing unit input, the first selector valve in a first position establishing a connection of the degassing unit with the output of the print head unit. A second selector valve is connected to the degassing unit output, the second selector valve in a first position establishing a connection of the degassing unit with the back-pressure tank.
摘要:
A system for dispensing one or more fluids into wells of a target multi-well plate, a holder and a method thereof are disclosed. The system provides the holder which holds the multi-well plate in a predefined holding position, the plate having a well region provided with wells for accommodating the fluids and an edge region surrounding the well region. The holder includes: a contact area which contacts the edge region to form a sealing zone which air-tightly seals a void formed between the holder and the plate; a supporting face which supports the well region in a planar condition; and a duct which connects to a pump to generate a negative pressure in the void so as to draw the well region onto the supporting face.
摘要:
Systems, methods and multi-well plates comprising an array of wells for thermal treatment of chemical or biological samples are disclosed. Each of the wells comprises a bottom opening, an upper opening, inner side walls extending from the bottom opening to the upper opening, a protrusion extending from the inner side walls into the well with a first cross-sectional area and located at a height from the bottom opening which is smaller than the height from the upper opening. A sample chamber with a second cross-sectional area is formed between the bottom opening and the protrusion. An upper chamber with a third cross-sectional area is formed between the protrusion and the upper opening, and in which the first cross-sectional area is smaller than the third cross-sectional area and smaller than or equal to the second cross-sectional area.
摘要:
Systems, methods and multi-well plates comprising an array of wells for thermal treatment of chemical or biological samples are disclosed. Each of the wells comprises a bottom opening, an upper opening, inner side walls extending from the bottom opening to the upper opening, a protrusion extending from the inner side walls into the well with a first cross-sectional area and located at a height from the bottom opening which is smaller than the height from the upper opening. A sample chamber with a second cross-sectional area is formed between the bottom opening and the protrusion. An upper chamber with a third cross-sectional area is formed between the protrusion and the upper opening, and in which the first cross-sectional area is smaller than the third cross-sectional area and smaller than or equal to the second cross-sectional area.
摘要:
The present invention is directed to methods, devices and computer programs for preparing nucleic acids from a template nucleic acid by subjecting a sample to thermocycles. After a first number of thermocycles, a partial amount of the reaction mixture is being subjected to a second number of thermocycles. This two step amplification method speeds up overall reaction time without affecting the limit of detection.
摘要:
A method to adjust a temperature of a fluid is disclosed, the method comprising the steps of providing a heat sink taking effect on the fluid, heating the fluid by Joule heating, and adjusting the heat provided by Joule heating in order to reach a desired temperature of the fluid. Furthermore, an apparatus to carry out the method is also disclosed. Therewith, a very efficient temperature change of the fluid can very quickly be obtained since the temperature of the surrounding is not substantially changed by heat diffusion. While a temperature increase is carried out by Joule heating, a temperature decrease is carried out by simply deactivating Joule heating. As soon as Joule heating is deactivated, the heat is extracted from the fluid by the heat sink, thereby initiating a high speed temperature change towards lower temperatures.
摘要:
Very large amounts of data may be handled by the user interface of computers. The main processor is thus permanently overloaded, so that the computing power available for the actual application is sharply reduced in a manner that cannot be predicted without limiting the user requests. A new computer architecture is disclosed which allows a higher and more exactly predictable computing power to be achieved. In order to make the rest of the system independent from the user interface, the computer is subdivided in such a way that a first module (part 1) takes over the display and operation tasks of the user interface, a second module (part 2) takes over the processing of the application programs without their user interface, and a third module (part 3) takes over the remaining functional units. All modules have their own internal data paths. An interface between the first and second modules support the exchange of messages and data without affecting the independent processes in the first and second modules. The first and second modules have their own access paths to common devices located in the third module.