2篇
您的检索式：作者名="Haifen Ding"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Natural variations in flavonoids and triterpenoids of Cyclocarya paliurus leaves显示文摘Cyclocarya paliurus is widely distributed in subtropical areas of China.Secondary metabolites in the leaves,including flavonoids and triterpenoids,provide protection against diseases such as hyperlipidemia,diabetes,hypertension,and hypoimmunity.In this study,343 C.paliurus leaves were collected from 32 distinct populations covering most of the main distribution,to deduce the response of flavonoids and triterpenoids to seven environmental factors.Principal component analysis was performed using seven flavonoid and six triterpenoid compounds.The results show that altitude,latitude,and longitude significantly contributed to variations in total flavonoid and triterpenoid contents.In addition,the interaction of these metabolites was extensively correlated with environment changes,and therefore should be considered during selection and cultivation. | Caowen Sun Xulan Shang Haifen Ding Yanni Cao Shengzuo Fang | 2021 | Journal of Forestry Research2021，32，2： | 6 |
| 2 | Collaborative beamforming based on directional perturbation using one bit feedback显示文摘A novel collaborative beamforming algorithm is proposed in a wireless communication system with multiple transmitters and one receiver. All transmitters take part in the collaboration and the weighted message is transmitted simultaneously. In order to maximize the beamforming gain, the transmitters use one bit feedback information to adjust the phase offset. It tracks the direction in which the signal strength at the receiver can increase. The directional search and perturbation theory is used to achieve the phase alignment. The feasibility of the proposed algorithm is proved both experimentally and theoretically. Simulation results show that the proposed algorithm can improve the convergent speed of the phase alignment. | Haifen Yang Ning Ding Zhi Zheng Shuisheng Lin Zhongpei Zhang Guangjun Li | 2016 | Journal of Systems Engineering and Electronics2016，27，3： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员