Cyclability evaluation on Si based Negative Electrode in Lithium ion Battery by Graphite Phase Evolution: an operando X-ray diffraction study.

Artificial graphite (FSN) additive is employed as internal structural label for projecting cyclability of Si material native electrode in a mass ratio of Si/FSN = 1.0 in Li ion battery (LIB). Results of operando X-ray diffraction analysis on Si-FSN negative electrode in LIB demonstrate that one can evaluate the lithiation and delithiation affinity of active material by referring phase transition delay of graphite as affected by experimental splits in a formation process of LIB.

[Investigation on Clonorchis sinensis infection and its risk factors in Futian District, Shenzhen City].

Objective: To understand the status of Clonorchis sinensis infection and its risk factors in Futian District, Shenzhen City, so as to provide the evidence for formulating the strategy of prevention and control.

Methods: Two monitoring points were randomly selected, and the permanent population aged ≥ 3 years were investigated and their stool samples were detected for the eggs of C. sinensis by using Kato-Katz technique.