Study on GLI values of Polygonatum odoratum base on multi-temporal of unmanned aerial vehicle remote sensing / 中国中药杂志

Unmanned aerial vehicle(UAV) remote sensing and vegetation index have great potential in the field of Chinese herbal medicine planting. In this study, the visible light image of Polygonatum odoratum planting area in Changyi district of Jilin province were acquired by UAV, and the real-time monitoring of P. odoratum planting area was realized. The green leaf index(GLI) was established, and GLI values of P. odoratum were collected used the spatial sampling points. To compare the GLI values in different periods, it was found that the GLI values of P. odoratum have three stages changing rule of rising-gentle-falling related to the germination, vigorous growth and withered of P. odoratum growth. Meanwhile, the GLI values were compared with four biomass data of P. odoratum, including plant height, leaf area, chlorophyll a and chlorophyll b content in leaves, and it was found that the GLI value was related to the growth potential of P. odoratum. The GLI value with a rapid increase in rising stage or at a high level in the gentle stage means the P. odoratum was in a better growth potential. GLI value has a same change trend with plant height, and has certain correlation with plant height and leaf area. However, there is no obvious relationship between chlorophyll a and chlorophyll b contents in leaves and GLI value. The study clarified the change rule of GLI value of P. odoratum, explained the reason for the change of GLI value, and expanded the application range of GLI. The research shows that UAV and vegetation index can be applied to monitoring the Chinese herbal medicines planting, and provides a new idea for exploring more effective information extraction methods of Chinese herbal medicines.

Feasibility of Upper-limb Motor Function Assessment System Using Movement Posture and Electromyography / 中国康复理论与实践

Objective:To investigate the feasibility of movement posture and electromyography based upper-limb motor function assessment system in the assessment of upper-limb motor function for stroke patients. Methods:From January, 2018 to March, 2019, ten stroke patients were recruited from Nanjing Tongren Hospital. According to the predesigned rehabilitation movements, movement posture and surface electromyography data during rehabilitation movement implementation were collected, and the upper-limb motor function of stroke patients were evaluated using movement posture and electromyography based upper-limb motor function assessment system. Further comparisons were also made with single movement posture or electromyography based assessment system. Meanwhile, the validity of the proposed assessment system was verified. All the patients were assessed with Fugl-Meyer Assessment-Upper Extremities (FMA-UE). Results:Positive correlations were shown between movement posture and electromyography based upper-limb motor function assessment system and scores of FMA-UE (r = 0.891, P = 0.001), and better validities were achieved than single movement posture (r = 0.758, P = 0.011) or electromyography (r = 0.697, P = 0.025) based assessment. Conclusion:Movement posture and electromyography based upper-limb motor function assessment system can effectively evaluate the upper-limb motor function of stroke patients.