Abstract: A portable internal friction measuring instrument and internal friction measurement method, the portable internal friction measuring instrument comprising: a cavity (10), a sample fixture (20), a fixing plate (30), a heating plate (40), a thermal barrier cover (50), an excitation assembly (60), and a vibration sensor (70). The excitation assembly (60) comprises a rotatable vibration impeller (61), at least one protrusion is provided on the outer wall of the vibration impeller (61), the lower edge of a sample (80) can be intermittently toggled by means of the protrusion during the rotation of the vibration impeller (61), and the vibration amplitude of the sample (80) is determined by using an angle difference between emitted light and reflected light of the sample (80), such that the technical effects of mechanical toggling to excite the vibration of the sample (80) and non-contact measurement of the vibration of the sample (80) are achieved.

Abstract: Provided are a traditional Chinese medicine ointment for preventing and treating mastitis in dairy cows and a preparation method thereof, belonging to the technical field of veterinary traditional Chinese medicines. The traditional Chinese medicine ointment includes raw materials in parts by mass: 20-30 parts of dandelion, 20-30 parts of herba patriniae, 10-16 parts of Caulis Lonicerae Japonicae, 0.5-1 part of borneol, 0.03-0.05 part of polypeptide, 40-50 parts of auxiliary emulsifier, 40-50 parts of liquid paraffin and 100-130 parts of white vaseline. An amino acid sequence of the polypeptide is: Phe Phe Arg Lys Val Leu Lys Leu Ile Arg Lys Ile Trp Arg (SEQ ID NO. 1). In the application, dandelion, herba patriniae, Caulis Lonicerae Japonicae and borneol 1 are mixed, and polypeptide is added at the same time to prepare ointment.

Abstract: This invention discloses a primer, a kit and a method for testing Taihe black chicken egg. The described primer includes: as shown in SEQ ID No. 1, SEQ ID No. 2, SEQ ID No. 3 and SEQ ID No. 4. The described test method comprises the following steps: extract the genomic DNA of the egg to be tested, propagate the genomic DNA by two-step PCR, and perform genotyping according to the base at 68 bp of the gene sequence of the second-step PCR product. If the base at that site is G, the egg is a Taihe black chicken egg; if the base at that site is C, the egg is a non-Taihe black chicken egg. The variable site targeted by this invention is unique to Taihe black chicken egg.