Abstract: A method for calibrating a chest of a vehicle crash dummy, includes: controlling, under each preset test condition, a pressing apparatus to press down a chest of a target crash dummy with a target pressing speed and a target pressing distance corresponding to the preset test condition, obtaining an actual force-displacement curve under each preset test condition, obtaining a standard force-displacement curve of a chest of a standard crash dummy under each preset test condition, and determining, according to the actual force-displacement curve and the standard force-displacement curve under each preset test condition, whether the chest of the target crash dummy satisfies a biological simulation standard. Through collecting information under various preset test conditions, various complicated conditions of impact on the chest can be more effectively simulated in a crash test by using the method, which improves the accuracy of determining the biological simulation standard.

Abstract: Provided are a HEK293T cell strain having high dispersibility and a screening method therefor. Specifically, the present application relates to a method for screening a HEK293T cell strain suitable for serum-free suspension culture, a cell strain screened by using the method, and a method for producing a viral vector by using the cell strain.

Abstract: The present invention discloses the use of a human NLK gene and associated drugs thereof. The present invention discloses the use of the NLK gene for tumor treatment, tumor diagnosis and drug preparation. The present invention further constructs an isolated molecule that attenuates expression of the NLK gene of tumor cells, cells comprising the isolated molecule and a NLK interference lentivirus, and discloses the use thereof as well. The isolated molecule or the NLK interference lentivirus that attenuates expression of the NLK gene provided in the present invention can specifically attenuate expression of the human NLK gene, especially the lentivirus, can effectively infect target cells, efficiently inhibit the expression of the NLK gene in target cells, and inhibit the growth of tumor cells, thus has great significance in tumor treatment.

Abstract: The present invention discloses the use of a human NLK gene and associated drugs thereof. The present invention discloses the use of the NLK gene for tumor treatment, tumor diagnosis and drug preparation. The present invention further constructs an isolated molecule that attenuates expression of the NLK gene of tumor cells, cells comprising the isolated molecule and a NLK interference lentivirus, and discloses the use thereof as well. The isolated molecule or the NLK interference lentivirus that attenuates expression of the NLK gene provided in the present invention can specifically attenuate expression of the human NLK gene, especially the lentivirus, can effectively infect target cells, efficiently inhibit the expression of the NLK gene in target cells, and inhibit the growth of tumor cells, thus has great significance in tumor treatment.