Zobrazeno 1 - 10
of 86
pro vyhledávání: '"SHEN Jia-lin"'
Publikováno v:
Yankuang ceshi, Vol 39, Iss 6, Pp 856-865 (2020)
BACKGROUND Currently the analysis methods of organochlorine pesticides and pyrethroids in environment samples are gas chromatography and gas chromatography-mass spectrometry (GC-MS). Gas chromatography with electron capture detector has been widely u
Externí odkaz:
https://doaj.org/article/16b255521a1945bca346ad48e790db21
Publikováno v:
Yankuang ceshi, Vol 39, Iss 6, Pp 816-827 (2020)
BACKGROUND The quantification of trace elements in geological samples depends largely on the analytical methods that require complex chemical pretreatment. High-energy polarized energy-dispersive X-ray fluorescence spectrometry (HE-P-EDXRF) has a con
Externí odkaz:
https://doaj.org/article/7277d8e4e4b748d3af45c85d2e26ab40
Publikováno v:
Yankuang ceshi, Vol 39, Iss 4, Pp 555-565 (2020)
BACKGROUND The contents of silver, tin, boron, molybdenum, and lead in geological samples are extremely important for studying the metallogenic regularity and for geochemical prospecting. Current analytical methods rarely determine silver, tin, boron
Externí odkaz:
https://doaj.org/article/3e70747240dd471ba7edb54e7d890fab
Publikováno v:
Yankuang ceshi, Vol 35, Iss 1, Pp 75-81 (2016)
In order to evaluate the agricultural ecological environment risk caused by industrialization over a long period of time, the distribution characteristics of 22 organochlorine pesticide residues in the soils under different land use forms from four p
Externí odkaz:
https://doaj.org/article/12435004fc324581985eef04e8263bdc
Publikováno v:
Yankuang ceshi, Vol 34, Iss 1, Pp 75-81 (2015)
Basalt identification is usually performed by microscope, so the appraisal results are easily influenced by personal professional level and subjective factors. Influenced by slice orientation, there are differences between the optical characteristics
Externí odkaz:
https://doaj.org/article/6a586b1f0d5142e2a8aae34458cdcb2a
Publikováno v:
Yankuang ceshi, Vol 33, Iss 3, Pp 379-385 (2014)
Recent researches of PAHs in sediment mainly were focused on offshore areas of Yangtze River estuary and coastal areas nearby Shanghai. However, there were few reports about the PAHs in waterway sediment from Qidong and Chongming Island. Surface wate
Externí odkaz:
https://doaj.org/article/42e726925f3946479e683c045cd14f34
Publikováno v:
Yankuang ceshi, Vol 32, Iss 6, Pp 952-958 (2013)
In recent years, the main focus for improving detection methods for organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in groundwater, soils and sediments has focused mainly on pretreatment and analysis conditions. Comprehensive me
Externí odkaz:
https://doaj.org/article/1ab35d3f182d4e03807dd78e7d4ddbe9
Joint Detections of Frequency and Direction of Arrival in Wideband Based on Programmable Metasurface
Autor:
Li, He, Li, Yun Bo, Hu, Wang Sheng, Huang, Sheng Jie, Shen, Jia Lin, Wang, Shi Yu, Cui, Tie Jun
We propose to achieve joint detections of frequency and direction of arrival in wideband using single sensor based on an active metasurface with programmable transmission states of pass and stop. By integrating two PIN diodes with the opposite direct
Externí odkaz:
http://arxiv.org/abs/2210.12395
Publikováno v:
In International Immunopharmacology May 2023 118
Intelligent metasurface with frequency recognition for adaptive manipulation of electromagnetic wave
Autor:
Wang Hai Peng, Li Yun Bo, Li He, Shen Jia Lin, Dong Shu Yue, Wang Shi Yu, Qi Kai Nan, Ma Qian, Jin Shi, Li Si Jia, Cui Tie Jun
Publikováno v:
Nanophotonics, Vol 11, Iss 7, Pp 1401-1411 (2022)
Due to the strong ability of recognizing electromagnetic (EM) environment and adaptively control of EM waves, the intelligent metasurfaces have received great attention recently. However, the intelligent metasurface with frequency recognition for ada
Externí odkaz:
https://doaj.org/article/319cfcead6a94889bf9c33df59799d8e