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1679 results about "Negative control" patented technology

The negative control typically is what one compares the outcome of an experiment to. That is, a positive result, which is a change in the dependent variable, is something that is different from what one sees with the negative control whereas a negative result is the same as that seen with the negative control. Negative...

Fluorescence quantitative PCR detection kit of hepatitis B virus and application thereof

The invention discloses a fluorescence quantitative PCR detection kit of hepatitis B virus and an application thereof. The kit is composed of the following independent components: DNA extraction solution I, DNA extraction solution II, DNA extraction solution III, DNA extraction solution IV, positive control interior label, PCR reaction liquid, probe HBV-SP, enzyme mixed liquor containing heat resistant DNA polyase and uracil DNA glycosylase, quantitative hepatitis B virus reference material, hepatitis B virus positive control serum and hepatitis B virus negative control serum, wherein DNA extraction solution I contains 0.2-1.0% of lauryl sodium sulphate (mass/volume), 1.0-4.0% of Triton (volume/volume) and 0.2-1.0mol/L of guanidinium isothiocyanate; DNA extraction solution II contains 100-300mmol/L of 4-HEPES, 100-300mmol/L of sodium chloride with pH of 6.5+/-0.2 and 100-400 mu g/ml of magnetic beads; DNA extraction solution III contains 0.1-1.0% of Triton (volume/volume) and 100-300mmol/L of sodium chloride; DNA extraction solution IV contains mineral oil. The fluorescence quantitative PCR detection kit of hepatitis B virus of the invention can be used for detecting the HBV-DNA concentration in samples of serum, blood plasma or latex and the like.
Owner:SANSURE BIOTECH

Security certification method and security certification device for power grid equipment and negative control terminal

The invention discloses a security certification method and a security certification device for power grid equipment and a negative control terminal. The method comprises the following steps: receiving electric power information comprising security certification data and instruction data and sent by master station equipment in a power grid; performing security certification on the power grid equipment according to the security certification data to generate a security certification result; and executing the operation corresponding to the instruction data according to the security certification result. The invention also discloses the security certification device for the power grid equipment. The device comprises an information receiving unit, a security certification unit and an instruction execution unit, wherein the information receiving unit is used for receiving the electric power information comprising the security certification data and the instruction data and sent by the master station equipment in the power grid; the security certification unit is used for performing security certification on the power grid equipment according to the security certification data to generate the security certification result; and the instruction execution unit is used for executing the operation corresponding to the instruction data according to the security certification result. Simultaneously, the invention also discloses the negative control terminal.
Owner:北京世通凌讯科技有限公司

Series terminated CMOS output driver with impedance calibration

A differential line driver includes a plurality of driver cells. Control logic outputs positive and negative control signals to the driver cells so as to match a combined output impedance of the driver cells at (Vop, Von). Each driver cell includes an input Vip and an input Vin, an output Vop and an output Von, a first PMOS transistor and a first NMOS transistor having gates driven by the input Vip, and a second PMOS transistor and a second NMOS transistor having gates driven by the input Vin. A source of the first PMOS transistor is connected to a source of the second PMOS transistor. A source of the first NMOS transistor is connected to a source of the second NMOS transistor. First and second resistors are connected in series between the first PMOS transistor and the first NMOS transistor, and connected together at Von. Third and fourth resistors are connected in series between the second PMOS transistor and the second NMOS transistor, and connected together at Vop. A first output switch is driven by a corresponding positive control signal and connected between a supply voltage and the sources of the first and second PMOS transistors. A second output switch driven by a corresponding negative control signal and connected between a ground and the sources of the first and second PMOS transistors.
Owner:AVAGO TECH WIRELESS IP SINGAPORE PTE
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