Zobrazeno 1 - 10
of 397
pro vyhledávání: '"JieFeng Liu"'
Publikováno v:
BMC Gastroenterology, Vol 24, Iss 1, Pp 1-11 (2024)
Abstract Background Depression and chronic constipation often co-occur, but the reciprocal influence between the two remains unclear. The purpose of this study is to explore the potential association between depression and chronic constipation. Metho
Externí odkaz:
https://doaj.org/article/a35758d3e66c429390082772d422def0
Publikováno v:
High Voltage, Vol 9, Iss 3, Pp 591-600 (2024)
Abstract Various dielectric response processes in the oil‐paper insulation are sensitively affected by the insulating states (ageing degrees and moisture contents). However, the existing research is still incomplete in revealing the microscopic mec
Externí odkaz:
https://doaj.org/article/4510507d283a40179c605c58b92c230f
Autor:
Dongpei Zhang, Jiefeng Liu, Sicheng Shao, Quanxing Zhang, Mengyuan Liu, Yuangao Wang, Mingyu Ma, Ning Cao, Guangyu Zhang, Jinyao Wang, Junwei Yang, Wenjuan Yan, Xin Jin, Chaohe Yang
Publikováno v:
Carbon Capture Science & Technology, Vol 12, Iss , Pp 100227- (2024)
2-Heptanol is an important secondary alcohol, applied in food, pharmaceutical and plastic industries. However, current industrial synthetic methods require energy intensive hydrogenation of 2-heptanone using homogeneous noble catalysts in alkaline me
Externí odkaz:
https://doaj.org/article/597b2f7f87c54c9db8c6f271d56e7626
Publikováno v:
Applied Sciences, Vol 14, Iss 17, p 7548 (2024)
Framing theory is a widely accepted theoretical framework in the field of news communication studies, frequently employed to analyze the content of news reports. This paper innovatively introduces framing theory into the text summarization task and p
Externí odkaz:
https://doaj.org/article/15bdd7bdf6864e5e8f45947308a617a2
Autor:
Hui Hwang Goh, Yongkang Ma, Chee Shen Lim, Dongdong Zhang, Wei Dai, Jiefeng Liu, Gaoxiang Li, Tonni Agustiono Kurniawan
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 1048-1056 (2023)
As the penetration of power electronic interfaced power sources increases rapidly, grid-forming controlled voltage source converters (VSCs) are deemed as an effective alternative to synchronous generators. As a typical grid-forming control scheme, dr
Externí odkaz:
https://doaj.org/article/d6d95090c2b14c3284cc744a328aa107
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
Protection of cultural relics and sites is of great significance. In this study, the new gray-green thin-layer biological crust on the rammed soil surface at the Shanhaiguan Great Wall in China was found. The emergence of this material has substantia
Externí odkaz:
https://doaj.org/article/d4239a941b0546baaee85438ad134933
Publikováno v:
High Voltage, Vol 8, Iss 1, Pp 81-90 (2023)
Abstract The ageing kinetic model is regarded as an effective tool to describe the degradation of transformer paper insulation. However, the temperature of the transformer winding is unevenly distributed, and the existing ageing kinetic models only d
Externí odkaz:
https://doaj.org/article/8e18b6d00c91445597fdabc4a2ccdcdf
Publikováno v:
Energies, Vol 17, Iss 9, p 2089 (2024)
Oil–paper insulation is the critical insulation element in the modern power system. Under a harsh operating environment, oil–paper insulation will deteriorate gradually, resulting in electrical accidents. Thus, it is important to evaluate and mon
Externí odkaz:
https://doaj.org/article/baca8826b86440fbaf3568fa8e2556cd
Publikováno v:
High Voltage, Vol 7, Iss 3, Pp 575-585 (2022)
Abstract The polarization information contained in the frequency‐domain spectroscopy (FDS) could be utilised for characterising the ageing degree of transformer oil‐immersed insulation. However, the polarization information will be obscured by it
Externí odkaz:
https://doaj.org/article/0d30d8fe478a4b0eb134f4afc685494c
Publikováno v:
High Voltage, Vol 7, Iss 1, Pp 75-85 (2022)
Abstract The charge transport and accumulation in oil–paper can cause the insulation degradation. So far, the most widely used model to simulate space charge transport and accumulation is the bipolar charge transport (BCT) model, which can well sim
Externí odkaz:
https://doaj.org/article/d56c18771e7849749ec806c8abefef27