Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Longlong GENG"'
Autor:
Lujuan Chen, Chao Lv, Yinping Meng, Zhen Yang, Wenbin Xin, Yuxue Zhu, Xuehan Wang, Baozhen Wang, Xuan Ding, Zhaoxia Wang, Xuyue Wei, Xinyue Zhang, Xuexue Fu, Xiangru Meng, Meimei Zhang, Manyu Huo, Ying Li, Hui Yu, Yuxia Wei, Longlong Geng
Publikováno v:
Molecules, Vol 29, Iss 23, p 5498 (2024)
Daphniphyllum alkaloids (DAs) are interesting molecules with rich molecular skeletons and diverse biological activities. Since their discovery, phytochemists have isolated, purified, and identified more than 350 DAs. Synthetic chemists, attracted by
Externí odkaz:
https://doaj.org/article/5738b7a9809c4317a1f29e38e4b91940
Autor:
Wentao Zou, Xu Zhang, Haojiang Shen, Wenqing Zhang, Xinyue Jiang, Liaohui Ni, Can Shen, Longlong Geng, Xiaotao Hao, Yingguo Yang, Xunchang Wang, Renqiang Yang, Yanna Sun, Yuanyuan Kan, Ke Gao
Publikováno v:
SusMat, Vol 4, Iss 3, Pp n/a-n/a (2024)
Abstract Side‐chain symmetry‐breaking strategy plays an important role in developing photovoltaic materials for high‐efficiency all‐small‐molecule organic solar cells (ASM OSCs). However, the power conversion efficiencies (PCEs) of ASM OSCs
Externí odkaz:
https://doaj.org/article/2b735c44393145e985362e478a739e5f
Publikováno v:
Machines, Vol 12, Iss 8, p 496 (2024)
This paper presents a method of calculating and correcting grinding face gears on an internal gear grinding machine. The generating principle of face gears is studied, and the feasibility of grinding motion on an internal gear grinding machine is ana
Externí odkaz:
https://doaj.org/article/854291f007be4bccbafc9834c0bcc810
Publikováno v:
Advances in Mechanical Engineering, Vol 15 (2023)
Spiral bevel gears are manufactured and used in pairs. When one part usually pinion fatigued, the pair will be replaced. It inevitably leads to a waste of resources and time. To solve this phenomenon, a method to remanufacture pinion with ease-off to
Externí odkaz:
https://doaj.org/article/6aa66bb7a4c94190833e8ccf8fc17cfb
Publikováno v:
Jixie chuandong, Vol 44, Pp 7-13 (2020)
A mathematical model is established to machine spiral bevel gears by duplex helical method. Based on the meshing principle of the gear， the digital representation of the spiral bevel gear tooth surface processed by the double helix method and the c
Externí odkaz:
https://doaj.org/article/45f809a2bb76418ca7a7dd198ffd5cb9
Autor:
Chao Lv, Ying Li, Yuxia Wei, Jiayu Wang, Hui Yu, Feng Gao, Chao Zhu, Xiangdi Jia, Mingqiong Tong, Pingxuan Dong, Qianqian Gao, Longlong Geng
Publikováno v:
Molecules, Vol 27, Iss 23, p 8348 (2022)
The overuse of antibiotics has led to severe bacterial drug resistance. Blocking pathogen virulence devices is a highly effective approach to combating bacterial resistance worldwide. Type three secretion systems (T3SSs) are significant virulence fac
Externí odkaz:
https://doaj.org/article/3e9758ed474d492e9a3994f3d227ee21
Autor:
Chunqing Si, Xintong Tian, Yan Wang, Zhigang Wang, Xinfang Wang, Dongjun Lv, Aili Wang, Fang Wang, Longlong Geng, Jing Zhao, Ruofei Hu, Qingzeng Zhu
Publikováno v:
Gels, Vol 8, Iss 11, p 751 (2022)
Design and preparation of gels with excellent mechanical properties has garnered wide interest at present. In this paper, preparation of polyvinyl alcohol (PVA)–tannic acid (TA) gels with exceptional properties is documented. The crystallization zo
Externí odkaz:
https://doaj.org/article/27ca266b0a064425b35f33341d79db15
Publikováno v:
Journal of Advanced Mechanical Design, Systems, and Manufacturing, Vol 15, Iss 1, Pp JAMDSM0006-JAMDSM0006 (2021)
In this paper a method to calculate machine tool setting parameters for spiral bevel gars by duplex helical method is proposed, in which contact path is predesigned. Firstly, machine setting parameters and curvature parameters in reference points of
Externí odkaz:
https://doaj.org/article/af7a38eefb4a4b72a0b7ff0c5e465cda
Publikováno v:
Journal of Advanced Mechanical Design, Systems, and Manufacturing, Vol 14, Iss 4, Pp JAMDSM0049-JAMDSM0049 (2020)
A method is proposed to manufacture spiral bevel gear by duplex spread blade method based on 4-axis CNC milling machine. Firstly, the geometry parameters and machine-tool settings are comprehensively considered. To meet with the tooth taper, a new wa
Externí odkaz:
https://doaj.org/article/408528ca4b164e1686759befe946d724
Publikováno v:
Journal of Advanced Mechanical Design, Systems, and Manufacturing, Vol 12, Iss 2, Pp JAMDSM0057-JAMDSM0057 (2018)
In order to improve the meshing performance or correct contact area of spiral bevel gears, a new method of tooth surface topography modification is proposed in this paper. Firstly, the construction method of tooth surface mismatch topography is studi
Externí odkaz:
https://doaj.org/article/f72cb704e05642c699c4f1e528e76e8f