Abstract: A device for evaluating the neurovirulence of a mumps virus, comprising: (I) a virus inoculation module, which is used for performing virus inoculation of a mumps virus to be evaluated on the lateral ventricle of a rat; (II) a processing module, which is used for performing vibration slicing on the fixed rat brain; (III) an imaging module, which is used for scanning and imaging the obtained rat brain slices; and (IV) an analysis module, which is used in the obtained imaging for calculating a neurovirulence index by using a formula I: the neurovirulence index=S1/S0×100 (formula I) according to the cross-sectional area S1 of a cavity formed by hydrocephalus in the longitudinal section of the rat brain and the total cross-sectional area S0 of the rat brain. Multiple results show that the results are stable, repeatability is high, and a wild strain may be distinguished from a vaccine strain.

Abstract: Provided are an F-genotype mumps virus attenuated strain, a construction method therefor and an application thereof. The attenuated strain is a mumps virus with the accession number of CCTCC NO: V201950. Further provided are a vaccine composition containing the F-genotype mumps virus attenuated strain as an active ingredient and a preparation method thereof.

Abstract: The present invention discloses a tearing structure of a tear strip and its manufacturing device and manufacturing method. During the process of manufacturing the bag, the bow defined by the pull-up portion is relatively flat. It does not upwarp or interfere with other devices, causing equipment damage or bag waste. The junctions of the pull-up portion are formed by the unevenness of the cutter, which can be used as anti-counterfeiting and anti-theft function. It is judged whether the pull-up portion is opened by the connection of the dotted line of the bow. The inverted buckled structure is formed at a bottom of the bag body and the organ surface is not opened, which is more favorable for sucker grabbing. The second cutter has a square serrated incision to avoid the entire cut-through, thereby solving the problem that the fall off between the pull-up portion and the tear strip caused by overcut in the past.

Abstract: A multi-function zipper inspection machine, comprising: an unwinding, a pull-out roller, an first variable frequency motor A, a first swing roller, a first conveying roller A, a dotted hole punching device, a lateral up zipper device, a heat sealing device, a cooling device, a color mark detecting device, a second conveying roller B, a second swing roller, a winder, a second variable frequency motor B; a first potentiometer A and a second potentiometer B are respectively provided above the first swing roller and the second swing roller to transmit up and down swing amplitude data of the first swing roller and the second swing roller respectively to the first variable frequency motor A and the second variable frequency motor B, so as to control speeds of the unwinding and the winding respectively.

Abstract: Provided is luminescent gold nanomaterial functionalized by N-(4-aminobutyl)-N-ethylisoluminol, methods of preparation and application thereof. The functionalized gold nanomaterial is formed by N-(4-aminobutyl)-N-ethylisoluminol bonding to the surface of the gold nanoparticle. The functionalized gold nanomaterial are prepared by directly reducing chloroauric acid with N-(4-aminobutyl)-N-ethylisoluminol, wherein N-(4-aminobutyl)-N-ethylisoluminol acts as reducer and stabilizer simultaneously. The preparation method is simple, fast and no need of special conditions. The preparation methods can be performed in a wide temperature range, for example, 15-35.degree. C. The size and pattern of the functionalized gold nanomaterial can be specified by choosing the ratio of chloroauric acid to N-(4-aminobutyl)-N-ethylisoluminol. The obtained functionalized gold nanomaterial exhibits excellent chemiluminescence properties.

Abstract: Provided is luminescent gold nanomaterial functionalized by N-(4-aminobutyl)-N-ethylisoluminol, methods of preparation and application thereof. The functionalized gold nanoparticle nanomaterial are formed by N-(4-aminobutyl)-N-ethylisoluminol bonding to the surface of the gold nanomaterial. The functionalized gold nanomaterial are prepared by directly reducing chloroauric acid with N-(4-aminobutyl)-N-ethylisoluminol, wherein N-(4-aminobutyl)-N-ethylisoluminol acts as reducer and stabilizer simultaneously. The preparation method is simple, fast and no need of special conditions. The preparation methods can be performed in a wide temperature range, for example, 15-35° C. The size and pattern of the functionalized gold nanomaterial can be specified by choosing the ratio of chloroauric acid to N-(4-aminobutyl)-N-ethylisoluminol. The obtained functionalized nano gold particles exhibit excellent chemiluminescence properties.