39results about How to "Improve sharding efficiency" patented technology

In the field of mass spectrometry, a method and apparatus for fragmenting ions with a relatively high degree of resolution and efficiency. The technique includes trapping the ions in a linear ion trap, in which the background or neutral gas pressure is preferably on the order of 10-5 Torr. The trapped ions are resonantly excited for a relatively extended period of time, e.g., exceeding 50 ms, at relatively low excitation levels, e.g., less than 1 Volt (0-pk). The technique allows selective dissociation of ions with a high discrimination. High fragmentation efficiency may be achieved by superimposing a higher order multipole field onto the quadrupolar RF field used to trap the ions. The multipole field, preferably an octopole field, dampens the radial oscillatory motion of resonantly excited ions at the periphery of the trap. This reduces the probability that ions will eject radially from the trap thus increasing the probability of collision induced dissociation.

Rapid and efficient fragmentation of ions in an ion trap for MS / MS analysis is achieved by a pulsed fragmentation technique. Ions of interest are placed at an elevated value of Q and subjected to a relatively high amplitude, short-duration resonance excitation pulse to cause the ions to undergo collision-induced fragmentation. The Q value of the ions of interest is then rapidly reduced, thereby decreasing the low-mass cutoff and allowing retention and subsequent analysis of low-mass ion fragments.

A silicon chip separating device comprises a silicon chip separating mechanism and a feeding trough. The silicon chip separating mechanism comprises a silicon chip separating mechanism body. Two separated silicon chip conveyor belts which are parallelly and separately arranged are configured below the silicon chip separating mechanism body. The silicon chip separating mechanism body is provided with an exhausting holes which face the separated silicon chip conveyor belts. The air exhausting holes are communicated with an air exhausting device through pipeline. The silicon chip separating mechanism body is provided with rollers at positions which correspond with the front end of the conveying direction of the separated silicon chip conveyor belts. The silicon chip separating mechanism body is provided with air blowing holes of which the air blowing direction face the separated silicon chip conveyor belts. The air blowing holes are communicated with an air blower through pipeline. The feeding trough comprises a feeding trough body and a water pump. The feeding trough body is provided with an overflow opening. The overflow opening is communicated with a liquid storage trough through pipeline. The feeding trough body is internally provided with a supporting platform for placing stacked silicon chips. The supporting platform is transmissibly connected with the driving part of a vertical movement driving device. The silicon chip separating device has advantages of high silicon chip separating efficiency and small silicon chip damage in silicon chip separation.

A silicon wafer slicing apparatus is disclosed. The silicon wafer slicing apparatus comprises a slicing mechanism and a material supply slot, wherein the slicing mechanism comprises a silicon wafer slicing mechanism body; the silicon wafer slicing mechanism body is provided with two parallel and spaced slicing conveying belts downwardly; air holes are formed, facing to the slicing conveying belts, of the silicon wafer slicing mechanism body; the air holes are communicated with an air extractor through pipelines; rolling wheels are arranged at the front ends of the slicing conveying belts in the conveying directions; the material supply slot comprises a material supply slot body and a water pump; an overflow opening is formed in the material supply slot body; the overflow opening is communicated with a liquid storage slot through a pipeline; a bearing and supporting platform for bearing stacked silicon wafers is arranged in the material supply slot body; and the bearing and supporting platform is arranged corresponding to the slicing conveying belts. When the silicon wafer slicing apparatus is used for slicing, the silicon wafer slicing apparatus has the advantages of high slicing efficiency and low damage to the silicon wafers.

A silicon chip separating mechanism comprises a silicon chip separating mechanism body, wherein two parallel conveying belts are arranged below the silicon chip separating mechanism body at an interval; air extraction holes facing the conveying belts are formed in the silicon chip separating mechanism body, and are communicated with an air extraction device through pipelines; rollers are arranged on the silicon chip separating mechanism body and correspond to the front ends of the conveying directions of the conveying belts; and an air blowing hole facing the conveying belts is formed in the silicon chip separating mechanism body, and is communicated with an air blowing device. According to the invention, the air extraction device, the air blowing device and the conveying belts work together to separate stacked silicon chips, so that the silicon chip separating mechanism is high in chip separating efficiency.

The invention discloses a full-automatic square paper towel receiving and separating device, comprising: a frame for supporting the entire full-automatic square paper towel receiving and separating device; a vacuum feed suction belt assembly mounted at a front end of the frame for conveying paper; a pickup roller assembly for receiving paper mounted on the frame; and a separating assembly for separating disposed at a top end of the frame and corresponding to the pickup roller assembly. The full-automatic square paper towel receiving and separating device according to the present invention transfers the paper to the pickup roller assembly through the vacuum feed suction belt assembly, and the pickup roller assembly receives the paper and performs the separating operation under the action ofthe separating assembly. The full-automatic square paper towel receiving and separating device in the invention realizes automatic grasping, does not need manual grasping, and reduces manual intervention, thereby improving the efficiency of separating.