全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:X. He , S. Li , Y. Wang
来源:[J].Ukrainian Mathematical Journal(IF 0.154), 2017, Vol.69 (2), pp.331-336Springer
摘要:Suppose that G is a finite group and H is a subgroup of G. We say that H is a BNA -subgroup of G if either H x = H or x ∈ < H, H x > for all x ∈ G. The BNA -subgroups of G are between normal and abnormal subgroups of G. We obtain some new characteriz...
作者:X. He , J. Wu
来源:[J].Journal of Superconductivity and Novel Magnetism(IF 0.702), 2017, Vol.30 (5), pp.1345-1348Springer
摘要:We have synthesized La2− x Sr x CuO4 thin films using atomic layer-by-layer molecular beam epitaxy (ALL-MBE). The films are high-quality—singe crystal, atomically smooth, and very homogeneous. The critical temperature ( T c) shows ...
作者:X. He , X. Zheng ...
来源:[J].eXPRESS Polymer Letters(IF 2.294), 2019, Vol.13 (8), pp.713-723DOAJ
摘要:Spatial Confining Forced Network Assembly (SCFNA) method is an effective method for the enhancement of electrical conductivity. In the current paper, a composite material consisting of polydimexilsiloxane (PDMS) and short carbon fiber (SCF) was modified by adding graphene nanopla...
作者:X. He , J. Yu ...
来源:[J].Atmospheric Chemistry and Physics(IF 5.51), 2011, Vol.11 (9), pp.4353DOAJ
摘要:North China Plain (NCP) is one of the most densely populated regions in China and has experienced enormous economic growth in the past decades. Its regional trace gas pollution has also become one of the top environmental concerns in China. Measurements of surface trace gases, in...
作者:X. He , J. Hao ...
来源:[J].Biogeosciences(IF 3.754), 2016, Vol.13 (12), pp.3607-3618DOAJ
摘要:Mineral binding is a major mechanism for soil carbon (C)stabilization. However, the submicron information about the in situ mechanisms ofdifferent fertilization practices affecting organo-mineral complexes andassociated C preservation remains unclear. Here, we applied nano-s...
作者:X. He , C. Yan ...
来源:[J].Atmospheric Chemistry and Physics(IF 5.51), 2017, Vol.17, pp.13819-13831DOAJ
摘要:In order to investigate the negative ions in the boreal forest we have performed measurements to chemically characterise the composition of negatively charged clusters containing highly oxygenated molecules (HOMs). Additionally, we compared this information with the chemical...
作者:X. He , E. Sheridan
来源:[J].Physical Review X(IF 6.711), 2016, Vol.6 (2)DOAJ
摘要:In cavity optomechanics, radiation pressure and photothermal forces are widely utilized to cool and control micromechanical motion, with applications ranging from precision sensing and quantum information to fundamental science. Here, we realize an alternative approach to optical...
作者:X. He , T. O. Sonnenborg ...
来源:[J].Hydrology and Earth System Sciences(IF 3.587), 2013, Vol.17 (8), pp.3245-3260DOAJ
摘要:Uncertainty of groundwater model predictions has in the past mostly been related to uncertainty in the hydraulic parameters, whereas uncertainty in the geological structure has not been considered to the same extent. Recent developments in theoretical methods for quantifying geol...
作者:X. He , Y. Bai ...
来源:[J].Biogeosciences(IF 3.754), 2013, Vol.10 (7), pp.4721-4739DOAJ
摘要:The eastern China seas are some of the largest marginal seas in the world, where high primary productivity and phytoplankton blooms are often observed. However, little is known about their systematic variation of phytoplankton blooms on large spatial and long temporal scales...
作者:X. He , J. Liu ...
来源:[J].Hydrology and Earth System Sciences(IF 3.587), 2013, Vol.17 (10), pp.3759-3778DOAJ
摘要:Groundwater overdraft has caused fast water level decline in the North China Plain (NCP) since the 1980s. Although many hydrological models have been developed for the NCP in the past few decades, most of them deal only with the groundwater component or only at local scales....

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