Lilium concolor Salisb. is a perennial herb with high ornamental and medicinal value in China. The complete chloroplast genome sequence of L. concolor was assembled using high-throughput sequencing data. The chloroplast genome of L. concolor is 152,625 bp in length and consists of large single-copy (82,056 bp) and small single-copy (17,585 bp) regions, and a pair of inverted repeat (26,492 bp) regions. A total of 131 genes were annotated, these included 85 protein-coding, 38 tRNA, and eight rRNA genes, with an overall GC content of 37.0%. Phylogenetic analysis with 48 chloroplast genomes fully resolved L. concolor in a clade with L. amabile , L. callosum , and L. pumilum. This study further confirmed that chloroplast genomes in the genus Lilium are highly conserved, which supports the conclusions from previous reports.

Compliant amplification mechanisms amplify input displacement in the desired output direction. However, owing to structural design, parasitic motion can easily be produced in an unexpected direction. The parasitic motion has a negative effect on the motion accuracy of the mechanism. To solve this problem, a topology optimization method for compliant amplification mechanisms with low parasitic displacement was proposed. Based on the variable density topology optimization method, the topology optimization model of the compliant amplification mechanism was established with the goal of increasing the output displacement and reducing the parasitic displacement. Volume ratio was set as constraint condition. The optimization criterion (OC) method were used to solve the problem and topology optimized amplification mechanisms were obtained. Simultaneously, the configuration characteristics and displacement amplification ratios of the mechanism under different virtual spring stiffnesses were compared. To verify the validity of the method, the performance of the topology optimized amplification mechanism and the typical amplification mechanism were compared using finite element simulation. The displacement amplification ratio is 5.95 and 3.17, and the relative parasitic displacement is 0.6% and 10.27%, respectively. Finally, the performance of the topology optimized amplification mechanism and the typical amplification mechanism was verified by experiments. The displacement amplification ratio is 5.72 and 3.06, and the relative parasitic displacement is 0.95% and 10.64%, respectively. Simulation and experimental results show that the topology optimized amplification mechanism has a larger displacement amplification ratio and a lower parasitic displacement, which verifies the validity of this method.

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Combining the college-running practice, this paper has explored the base, the connotation and the implementation of the construction of undergraduate application-oriented talent training objectives of independent colleges. Firstly, the necessity and reality of the application-oriented talent training objectives has been analyzed in both theoretical and practical levels. Secondly, the paper has introduced the basic content of application-oriented talent training objectives of Independent Colleges-"Refined Profession and Strengthened Practice", and its requirements in terms of knowledge, ability and quality. Thirdly, the operational cultivating measures have been put forward.