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Characteristic mineralogy of the Zhutishi granite:Implication for petrogenesis of the late intrusive granite

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Science China Earth Sciences 2006年第6期49卷 573-583页

作者： wang Xiang YAO xiaojuan wang Chuansheng State Key Laboratory for Mineral Deposit Research Department of Earth Sciences Nanjing University Nanjing 210093 China State Key Laboratory for Mineral Deposit Research Department of Earth Sciences Nanjing University Nanjing 210093 China State Key Laboratory for Mineral Deposit Research Department of Earth Sciences Nanjing University Nanjing 210093 China

Many late intrusive granites with strongly peraluminous composition and fine-grained tex-ture occur as stocks or apophysis in the Dadongshan main intrusive granite located in NW Guang-dong Province. This paper reports the results of a petrogenetic study of some characteristic minerals (zircon, muscovite and andalusite) from the Zhutishi granite, one of the late intrusive granites in the Dadongshan granite. It is observed that the typological pattern of zircon population in the Zhutishi granite differs significantly from that in the Dadongshan granite, and that muscovite and andalusite, only found in the Zhutishi granite, are of magmatic origin. Therefore, this paper considers that the Zhutishi granite was unlike to be produced through crystal fractionation from the Dadongshan granitic magma as reported by previous authors, but is related closely to the formation of the Dadongshan granite. The hydrothermal fluid, produced by differentiation of the Dadongshan granitic magma at deep magmatic chamber, would penetrate into the source rock of the Zhutishi granite, and make it enriched in H2O and Al2O3; and the decompression after the ascent of the Dadongshan granitic magma in extension regime promotes partial melting of the source rock of the Zhutishi granite, and produces the strongly peraluminous granitic magma. The model proposed in this paper seems to be more reasonable to explain the spacio-temporal relationship between the late intrusive granites with strongly peraluminous feature and the main intrusive granite with metaluminous feature.

关键词： late intrusive granite, main intrusive granite, zircon, muscovite, andalusite.

Relevance Theory and the Protection of Interviewees from Falling Victims: A Potential Application of Forensic Linguistics

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学术界 2013年第8期 256-261页

作者： wang xiaojuan School of Language and Communication Beijing Jiaotong University Beijing 100044

Relevance contains communicators'abilities and preferences. This article represents the effort of applying related theories to the reading of such abilities and preferences in police interrogation records and revealing how they influence the effectiveness of such interrogations. This revelation provides the following likelihood: those who might be victims of such interrogations may be protected.

关键词：语言学受害者应用法医阅读能力传播者受害人

Structural Effects of L16Q, S20G, and L16Q-S20G Mutations on hlAPP： A Comparative Molecular Dynamics Study

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Chinese Journal of Chemistry 2012年第2期30卷 241-248页

作者： wang,Mian Yang,Jipeng wang,Jianyi wang,xiaojuan School of Chemistry and Chemical Engineering Guangxi UniversityNanningGuangxi 53004China Jiyuan Vocational and Technical College JiyuanHenan 459000China

The conformation change picture of human islet amyloid polypeptide （hlAPP） is outlined using molecular dynamics simulation, and the structural influences of L16Q, S20G, and L16Q-S20G mutations on the conformation of hlAPP are analyzed. Particularly, the conformational changes of the amyloidogenic-related regions of residues 15-- 17 and 20--29 are emphasized. Our studies find that, for WT hlAPP, residues 15--17 always maintain a stable a-helix structure, residues 20--25 structurally fluctuate between turn and 5-helix, and residues 26--29 mainly adopt coil and bend structures. The hydrogen bonds between the polar groups of hlAPP, long-rang van der Waals forces between the residues, and hydrophobic interactions between the residues of hlAPP are important driving forces to maintain the secondary structure of hlAPP. The replacement of leucine 16 by glutamine stabilizes the helix structure of residues 15--17 and 20--23 of hlAPP monomer, and the structure of residues 24--29 fluctuates be- tween helix and turn. The relatively stable helix structures of residues 15--17 and 20--29 are supposed to be beneficial for L16Q hlAPP to resist the aggregation as observed in the experiment. The substitution of serine20 by glycinc drives residues 15--17 and 20--29 of hlAPP to transform from helix structure to β-strands or coil structures with higher extension and flexibility, which may promote the aggregation of hlAPP as the experiments reported. These results are significant to understand the aggregation mechanism of hlAPP monomer into the dimer, trimer, oligomers and fibrils associated with the type 2 diabetes at the atomic level.

关键词： hIAPP wild type mutant molecular dynamics simulation

Commutator of Riesz potential in p-adic generalized Morrey spaces

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Frontiers of Mathematics in China 2018年第3期13卷 633-645页

作者： Huixia MO xiaojuan wang Ruiqing MA School of Science Beijing University of Posts and Telecommunications Beijing 100876 China

Suppose that Ip^α is the p-adic Riesz potential. In this paper, we established the boundedness of Ip^α on the p-adic generalized Morrey spaces, as well as the boundedness of the commutators generated by the p-adic R... 详细信息

关键词： p-Adic field p-adic Riesz potential commutator p-adic generalized Morrey function p-adic generalized Campanato function

Multi-layer structure formation of relativistic electron beams in plasmas

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Plasma Science and Technology 2022年第2期24卷 10-16页

作者： xiaojuan wang Zhanghu HU Younian wang School of Physics Dalian University of TechnologyDalian 116024People's Republic of China

A two-dimensional electromagnetic particle-in-cell simulation model is proposed to study the density evolution and collective stopping of electron beams in background *** show here the formation of the multi-layer structure of the relativistic electron beam in the plasma due to the different betatron frequency from the beam front to the beam ***,the nonuniformity of the longitudinal wakefield is the essential reason for the multi-layer structure formation in beam phase *** influences of beam parameters(beam radius and transverse density profile)on the formation of the multi-layer structure and collective stopping in background plasmas are also considered.

关键词： multi-layer structure beam phase space relativistic electron beam plasma based beam dump PIC

Web log classification framework with data augmentation based on GANs

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The Journal of China Universities of Posts and Telecommunications 2020年第5期27卷 34-46页

作者： He Mingshu Jin Lei wang xiaojuan Li Yuan School of Electronic Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China

Attacks on web servers are part of the most serious threats in network security *** logs of web attacks is an effective approach for malicious behavior ***,machine learning models based on labeled data are popular identification *** deep learning models are also recently introduced for analyzing logs based on web logs ***,it is limited to the amount of labeled data in model *** logs with labels which mark specific categories of data are difficult to ***,it is necessary to follow the problem about data generation with a focus on learning similar feature representations from the original data and improve the accuracy of classification *** this paper,a novel framework is proposed,which differs in two important aspects:one is that long short-term memory(LSTM)is incorporated into generative adversarial networks(GANs)to generate the logs of web *** other is that a data augment model is proposed by adding logs of web attack generated by GANs to the original dataset and improved the performance of the classification *** results experimentally demonstrate the effectiveness of the proposed *** improved the classification accuracy from 89.04%to 95.04%.

关键词： generative adversarial networks(GANs) web log data augmentation classification

The fate of fertilizer N applied to cotton in relation to irrigation methods and N dosage in arid area

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Journal of Arid Land 2012年第3期4卷 320-329页

作者： ChangZhou WEI TengFei MA xiaojuan wang Juan wang Key Laboratory of Oasis Eco-Agriculture College of AgricultureShihezi UniversityShihezi 832003China

Quantitative information on the fate and efficiency of nitrogen （N） fertilizer applied to coarse textured calcareous soils in arid farming systems is scarce but, as systems intensify, is essential to support sustainable ag- ronomic management decisions. A mesh house study was undertaken to trace the fate of N fertilizer applied to cotton （Gossypium hirsutum L. cv., Huiyuan701） growing on a reconstructed profile （0-100 cm） of a calcareous （〉15% CaCQ） sandy loam soil. Two irrigation methods （drip irrigation, DI; and furrow irrigation, FI） and four N ap- plication rates （0, 240, 360 and 480 kg/hm2, abbreviated as No, N240, N360, and N480, respectively） were applied. 15N-labelled urea fertilizer was applied in a split application. DI enhanced the biomass of whole plant and all parts of the plant, except for root; more fertilizer N was taken up and mostly stored in vegetative parts; N utilization efficiency （NUE） was significantly greater than in FI. N utilization efficiency （NUE） decreased from 52.59% in N240 to 36.44% in N480. N residue in soil and plant N uptake increased with increased N dosage, but recovery rate decreased consis- tently both in DI and Fl. Plant N uptake and soil N residue were greater in DI than in FI. N residue mainly stayed within 0-40 cm depth in DI but within 40-80 cm depth in Ft. FI showed 17.89% of N leached out, but no N leaching occurred in DI. N recovery rate in the soil-plant system was 75.82% in DI, which was markedly greater than the 55.97% in FI. DI exhibited greater NUE, greater residual N in the soil profile and therefore greater N recovery rate than in FI; also, N distribution in soil profile shallowed in DI, resulting in a reduced risk of N leaching compared to FI; and enhanced shoot growth and reduced root growth in DI is beneficial for more economic yield formation. Com- pared to furrow irrigation, drip irrigation is an irrigation method where N movement favors the prevention of N from being lost in the plant-soil system and benef

关键词： drip irrigation furrow irrigation N application rate N utilization efficiency N recovery Gossypium hirsutum

Ethanol production from corn stover pretreated by electrolyzed water and a two-step pretreatment method

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Chinese Science Bulletin 2012年第15期57卷 1796-1802页

作者： wang xiaojuan FENG Hao LI ZhiYi School of Chemical Machinery Dalian University of TechnologyDalian 116023China Institute for Genomic Biology University of lllinois at Urbana-ChampaignUrbanaILUSA

Pretreatment is one of the most important unit operations for ethanol production from biomass *** this study,corn stover was used as a feedstock to examine the effectiveness of two pretreatments:electrolyzed water pretreatment and a two-step *** water was employed as a catalyst to conduct one-step pretreatment of corn stover at three temperatures(165,180 and 195°C) and three treatment times(10,20 and 30 min).During the two-step pretreatment process,an organic alkaline solution of 1%(w/w) NaOH in 70%(w/w) ethanol was used for lignin removal in the first step,followed by a second step using hot *** furfural or 5-hydroxymethyl furfural was detected in the hydrolysates from both pretreatment methods when the detection limit of the HPLC was 0.2 g/*** highest glucan conversion yields were 83% obtained at 195°C for 30 min with acidic electrolyzed water and 83% by the two-step process,where the second step of the pretreatment was at 135°C for 30 *** hydrolyzates from the two pretreatment methods showed good performance in Saccharomyces cerevisiae fermentation *** two new methods may provide promising alternatives for the pretreatment of biomass for ethanol production.

关键词：预处理方法酸性电解水乙醇生产玉米秸秆生物质原料羟甲基糠醛前处理方法水解产物

Water Vapor Transport Related to the Interdecadal Shift of Summer Precipitation over Northern East Asia in the Late 1990s

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Journal of Meteorological Research 2018年第5期32卷 781-793页

作者： Po HU Minghao wang Liu YANG xiaojuan wang Guolin FENG College of Atmospheric Sciences Lanzhou UniversityLanzhou 730000 Laboratory for Climate Studies National Climate CenterChina Meteorological AdministrationBeijing 100081 Changwang School of Honors Nanjing University of Information Science&TechnologyNanjing 211004 College of Physical Science and Technology Yangzhou UniversityYangzhou 225002 College of Physics and Electronic Engineering Changshu Institute of TechnologyChangshu 215500

In this study, an interdecadal shift of summer precipitation over northern East Asia （NEA） was identified, demon-strating that summer precipitation decreased abruptly after 1998/99. The synchronous shift in summer moisture budget and water vapor transport over NEA was further investigated by using the NCEP/NCAR reanalysis data. The results indicate that water vapor transported northward into NEA from three low-latitude paths was limited because most water vapor was transported eastward. Water vapor transported from the westerly path in mid-high （WMH） lat-itudes exhibited significant correlations with summer precipitation in NEA and experienced a significant adjustment in the late 1990s. Regarding the spatial distributions of water vapor transport, less input was found through the west-ern boundary while more output occurred through the eastern boundary of NEA, and zonal water vapor transport fluxes mainly concentrated at the low to middle levels, which led to the summer precipitation shift in NEA around the late 1990s. Furthermore, it is also confirmed that the wind anomalies （rather than the moisture disturbance） as the dominant internal dynamic factor and Pacific Decadal Oscillation/Atlantic Multidecadal Oscillation （PDO/AMO） as possible external force played important roles in influencing the water vapor transport and causing the summer pre-cipitation shift over NEA in the late 1990s.

关键词： summer precipitation water vapor transport interdecadal shift northern East Asia