Zobrazeno 1 - 10
of 512
pro vyhledávání: '"LI Dou"'
Publikováno v:
Chinese Journal of Magnetic Resonance, Vol 41, Iss 3, Pp 331-340 (2024)
Due to the collision-shift effect, helium permeation into the vapor cell causes a time-dependent frequency drift in rubidium atomic clock. To quantify this shift, a cylindrical vapor cell with dimensions of 1.8 cm in diameter, 1.6 cm in height, and 1
Externí odkaz:
https://doaj.org/article/a56d3d57fe7449dda50cd1d9fac3766a
Publikováno v:
Shuitu Baochi Xuebao, Vol 38, Iss 3, Pp 91-100 (2024)
[Objective] To compare the applicability of terrain change monitoring algorithms in the pisha sandstone areas of the loess plateau. [Methods] A branch gully Telagouagou Huangfuchuan was taken as the research object, including digital elevation model
Externí odkaz:
https://doaj.org/article/1a8f9e69cfac46d8aaec0ee3878cde43
Publikováno v:
BMC Geriatrics, Vol 24, Iss 1, Pp 1-12 (2024)
Abstract Background Cognitive dysfunction is one of the leading causes of disability and dependence in older adults and is a major economic burden on the public health system. The aim of this study was to investigate the risk factors for cognitive dy
Externí odkaz:
https://doaj.org/article/06b6d7d361d24b6bb0ef1ee4a12f006f
Publikováno v:
Guan'gai paishui xuebao, Vol 41, Iss 8, Pp 54-62 (2022)
【Objective】 Pumping groundwater for irrigation over the past 40 years in most regions in northern China has resulted in groundwater table falling. To alleviate the continued deterioration of groundwater-induced ecosystems, most regions have start
Externí odkaz:
https://doaj.org/article/69d51b75bfa74703a96225fb1202e840
Publikováno v:
Foods, Vol 12, Iss 4, p 892 (2023)
Tomato and cucumber are two vital edible vegetables that usually appear in people’s daily diet. Penthiopyrad is a new type of amide chiral fungicide, which is often used for disease control of vegetables (including tomato and cucumber) due to its w
Externí odkaz:
https://doaj.org/article/61a3805477b7470991a28acaee9884d0
Publikováno v:
SHS Web of Conferences, Vol 166, p 01074 (2023)
In coal-fired power plants, how to timely inventory coal storage, in order to optimize the coal stock, and improve coal blending operation, and then carry out economic dispatch scientifically and reasonably, has always been an important topic. The tr
Externí odkaz:
https://doaj.org/article/f67af395b03947f087e77acafde08a96
Publikováno v:
Foods, Vol 11, Iss 21, p 3327 (2022)
A field trial was conducted to illustrate the dissipation and residue and assess the dietary intake risk of penthiopyrad in eggplants, and the distribution was further estimated after different household processing methods. Penthiopyrad dissipated qu
Externí odkaz:
https://doaj.org/article/4ccfbb2e4f5e46a5a22a398dcc2f1be6
Light shift and vapor-cell temperature shift are the two most significant factors dominating the long-term instability of compact atomic clocks. Due to the different physical mechanisms, there is not yet a solution that can effectively suppress the f
Externí odkaz:
http://arxiv.org/abs/2405.14281
In this study, a dual-interrogation (DI) method was used to suppress the light shift in the Rb 778 nm 5S1/2-5D5/2 two-photon transition (TPT) optical frequency standard. The approach used an auxiliary system to calibrate the light shift of the primar
Externí odkaz:
http://arxiv.org/abs/2310.10175
Autor:
Qu, Mingfei, Li, Dou, Li, Chenhong, Liu, Kangqi, Zhu, Weihang, Wei, Yuan, Wang, Pengfei, Kang, Songbai
A fully stabilized soliton microcomb is critical for many applications of optical frequency comb based on microresonators. However, the current approaches for full frequency stabilization require either external acousto-optic or electro-optic devices
Externí odkaz:
http://arxiv.org/abs/2310.08957