Lichen element compositions are of a reliable tool for the biomonitoring of atmospheric element deposition. The zoning and patterned accumulation of elements in lichen thallus is one of the important factors influencing lichen element concentrations. We collected an epigenous fruticose lichen Cladonia rangiferina (CR) from a remote site of Huzhong National Natural Reserve, Heilongjiang, NE China. Fifty-five elements (Ag,

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With the continuous development of small and medium enterprises in China, various problems in enterprises are becoming increasingly prominent. Among those problems, one of the most vital problems of human resource management is the flow and loss of sales personnel. Moderate flow helps to maintain the vitality of enterprises. However, the excessive loss can lead to slacken, or even stagnate the growth of the enterprises. Sales personnel, as a group with a significant proportion of employees in the enterprise, who directly linked to corporate profits, play an irreplaceable role in the enterprises. Controlling the loss of sales personnel is an urgent problem for many SMEs. This paper explores the overall situation of the sales personnel loss and its impact on the enterprises, and also analyzes the reasons for the loss of sales personnel from six aspects of the company system: personnel recruitment, internal training, performance system, company cultural construction and external factors. In the end, the paper also proposes corresponding solutions.

Metaphor not only is a rhetorical device but also could be a cognitive mechanism. Conceptual metaphor has raised great attention in cognitive linguistics in recent years. The present study examines the conceptual metaphor in 2020 New Year Speech and classifies different conceptual metaphor into their own type and calculates the frequency. The results show that orientation metaphor occupies highest frequency, 10 times. The findings reveal that all kinds of conceptual metaphors serve to make the speech vivid and try to get people closed. There is no aggression in the speech. President Xi used conceptual metaphor to better convey the gains of the past year and the direction of the next year, while at the same time conveying the image of a friendly country in the world.