摘要:
A thermal cycler for automatic performance of the polymerase chain reaction is provided. The thermal cycler comprises a heater control that provides close temperature control of the reaction.
摘要:
A thermal cycler for automatic performance of the polymerase chain reaction is provided. The thermal cycler comprises a heater control that provides close temperature control of the reaction.
摘要:
An automatic liquid transfer system includes a horizontally translatable table and a vertically translatable set of pipettes. The table accommodates a titer tray having a multiplicity of receptacles to be filled, or holding liquid samples to be diluted, and a rack housing plural rows of disposable tips. During each cycle in a serial dilution process, a fresh set of tips are picked up by the pipettes and used to transfer liquid in a sterile manner from a sample or diluent source to a row of wells in the titer tray, or from one row to a succeeding row of wells where it is mixed with diluent. Thereafter, the tips are discharged back into the rack to maintain sterile conditions during the process. A sensor is provided on the machine to detect whether all of the tips in each set are disengaged and another set successfully picked up.
摘要:
A novel midplane is shaped with voids through which a dataplane connection is made between components on one side of the midplane and components on the opposite side of the midplane. The voids in the novel midplane offer numerous advantages in the design of network devices, including improved cooling performance, minimizing rack unit space and maximizing interface density, improved signal integrity allowing greater bandwidth through elimination of midplane signaling connections, improved upgradability of orthogonal direct connectors with little or no impact on the midplane or chassis, and proper alignment between the components of the dataplane.