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The invention discloses a method for detecting the pollution toxicity of soil by adopting electric signals of a double-chamber microbial fuel cell and belongs to the technical field of detection of soil pollution. According to the method, electric quantity generated by decomposing organic matters through soil microorganisms is used as an index for detecting the pollution toxicity of the soil; compared with a traditional method for detecting the toxicity by microorganism activity, biomass and the like, the method has the advantages of low cost, easiness in operation and short detection period. The double-chamber microbial fuel cell used in the method comprises an anode, a cathode, an anode fixing groove, a cathode fixing groove, an anode chamber, a cathode chamber, a top cover of the anode chamber, a top cover of the cathode chamber, a diaphragm, a rubber cushion, a lead wire, a load, bolts and nuts. Before the double-chamber microbial fuel cell is operated, polluted soil and glucose are mixed and are added into the anode chamber; a potassium ferricyanide solution is introduced into the cathode chamber to be used as an electron acceptor; after the double-chamber microbial fuel cell is operated for 48 hours, the generated electric quantity in the 48 hours is calculated and is used for evaluating the toxicity of pollutants. The method for detecting the pollution toxicity of the soil by adopting the electric signals of the double-chamber microbial fuel cell has high scientific values and application values.

The invention discloses a method for detecting or detecting in an auxiliary mode whether a peptide to be detected from II type bacteriocin producing strain metabolite contains the II type bacteriocin producing strain quorum sensing signal peptide or is the II type bacteriocin producing strain quorum sensing signal peptide or not. The method comprises the following steps: inoculating the II type bacteriocin producing strain in a liquid improved skimmed milk medium for culturing, adding the peptide to be detected in a liquid improved skimmed milk medium at any time before arriving a stabilization stage, continuously culturing for 10-16 hours to obtain the culture; and detecting whether the II type bacteriocin is existed in the culture or not; if the II type bacteriocin is existed in the culture, the peptide to be detected contains or contains as a candidate, or the candidate is the quorum sensing signal peptide of the II type bacteriocin producing strain. The invention selects the improved skimmed milk medium to discriminate the quorum sensing autoinducing peptide, compared with the skimmed milk medium, the speed is more rapid, and the detection time is greatly shortened.

The invention provides an electromagnetic safety analysis method for a near field of a plane phased control array antenna on a system platform, which analyses electromagnetic safety of personnel and equipment close to the plane phased control array antenna on the system platform by calculating the near field electromagnetic environment of phase control array antenna radiation. The near field of the plane phased control array antenna is obtained by overlaying a radiation field of each active (motivation) array element in a array; enabling a near field area of the plane array antenna to be a far field area relative to the array elements; obtaining the near field of the array antenna after overlaying and rectifying the radiation far fields and solving the radiation far field of each array element in the array; and diagnosing the electromagnetic safety of the personnel and the equipment which are located at the near field of the phase control array antenna on the system platform by comparing near field electric field data with an electric field limit value specified by a electromagnetic safety standard. Each step of the method is based on strict principles, and the strictness of the principles ensures accuracy of calculation results, so that the electromagnetic safety of the personnel and the equipment located in the antenna near field area can be accurately analyzed.

The invention provides a horn temperature test system based on phase change measurement. The horn temperature test system comprises an adder, a power amplifier connected to the output of the adder, avoltage processing component and a current processing component connected to the output end of the power amplifier and arranged in parallel, a counter connected to the output ends of the voltage processing component and the current processing component, a phase temperature converter connected to the output end of the counter; wherein the voltage processing component and the current processing component each include a band pass filter, an amplifying circuit, and a zero crossing detecting circuit which are successively disposed. Further, a horn temperature test method based on phase change measurement is provided. The horn temperature test system and method based on phase change measurement provided by the invention can be realized only by a few components, and have the advantages of simplestructure, small occupied area and low power consumption.