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35results about How to "Immune" patented technology

Wave velocity microwave phase shift measurement method in combustion-to-detonation process

The invention discloses a wave velocity microwave phase shift measurement method in a combustion-to-detonation process. The wave velocity microwave phase shift measurement method solves the problems that an existing method can only obtain an average velocity and is poor in measurement precision. When explosives and charges are combusted or detonated, the end surface of a probe of a microwave sensor can synchronously move along with the advancing of the wave front due to high-temperature burning, thus doppler frequency shift and phase change occur between echo signals and transmitted signals, Doppler speed and phase information of the wave front at each moment are obtained through processing, and then the propagation speed of the wave front and the corresponding moment and displacement in the combustion-to-detonation process are obtained. The wave velocity microwave phase shift measurement method is high in sampling frequency and rich in obtained information, and has the advantages of high measurement precision and good safety performance. The wave velocity microwave phase shift measurement method is suitable for measuring the wave velocity and the corresponding moment and displacement in the combustion-to-detonation process of solid explosive and charges based on a sample tube method, and are further suitable for measuring the linear combustion velocity and the corresponding moment and displacement of other solid fuels.
Owner:XIAN MODERN CHEM RES INST

Preparation method of DNA (Deoxyribose Nucleic Acid) virus vaccine

The invention relates to a preparation method of a DNA (Deoxyribose Nucleic Acid) virus vaccine, which comprises the following steps of: sequencing genetic materials of a DNA virus, and determining a specific DNA sequence corresponding to a specific protein of the DNA virus; selecting engineering bacteria; intercepting a specific DNA sequence from a genetic material of the DNA virus, and introducing the specific DNA sequence into the engineering bacteria; carrying out fermentation cultivation on the engineering bacteria into which the specific DNA sequence of the virus is introduced by adopting specific fermentation equipment, so that the quantity of the engineering bacteria is increased; crushing the engineering bacteria subjected to fermentation culture, so that the engineering bacteria are crushed; extracting specific protein of the DNA virus from the crushed engineering bacteria; specific protein of the DNA virus is extracted, and a corresponding DNA virus vaccine is prepared; specific fermentation equipment specifically comprises a support, a tank body, a first temperature control module, a second temperature control module, a PH value control module, a culture solution adding device, a pressure control module, an oxygen content control module, a buffer tank and a waste liquid collecting tank. The safety and the stability of the DNA virus vaccine are improved.
Owner:商丘美兰生物工程有限公司
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