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Meet Our New Editorial Board Members of Rising Stars

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Chinese Journal of chemistry 2024年第16期42卷 1797-1805页

作者： Editorial Office of Chinese Journal of chemistry 不详

Editorial Board Memberof Rising Stars:Xiulin Fan,Professor,School of Materials science and engineering Zhejiang {2.,Hangzhou,***:2.03.2.07,*** {2.,China.2.07-2.12.*** {2.,China(Supervisor:*** Chen).

关键词： China. Editorial Hangzhou

A land surface model incorporated with soil freeze/thaw and its application in GAME/Tibet

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science China Earth sciences 2006年第12期49卷 1311-1322页

作者： HU Heping1, YE Baisheng2. ZHOU Yuhua3.& TIAN Fuqiang1 1. department of Hydraulic engineering, Tsinghua {2., Beijing 100084, China 2. Cold and Arid Regions Environmental and engineering Research Institute, Chinese Academy of sciences, Lanzhou 73.000, China 3. department of Civil engineering, Massachusetts Institute of Technology, USA department of Hydraulic engineering Tsinghua University Beijing China Cold and Arid Regions Environmental and engineering Research Institute Chinese Academy of Sciences Lanzhou China department of Civil engineering Massachusetts Institute of Technology USA

Land surface process is of great importance in global climate change, moisture and heat exchange in the interface of the earth and atmosphere, human impacts on the environment and eco- system, etc. Soil freeze/thaw plays an important role in cold land surface processes. In this work the diurnal freeze/thaw effects on energy partition in the context of GAME/Tibet are studied. A sophisti- cated land surface model is developed, the particular aspect of which is its physical consideration of soil freeze/thaw and vapor flux. The simultaneous water and heat transfer soil sub-model not only reflects the water flow from unfrozen zone to frozen fringe in freezing/thawing soil, but also demon- strates the change of moisture and temperature field induced by vapor flux from high temperature zone to low temperature zone, which makes the model applicable for various circumstances. The modified Picard numerical method is employed to help with the water balance and convergence of the numerical scheme. Finally, the model is applied to analyze the diurnal energy and water cycle char- acteristics over the Tibetan Plateau using the Game/Tibet datasets observed in May and July of 1998. Heat and energy transfer simulation shows that: (i) There exists a negative feedback mechanism between soil freeze/thaw and soil temperature/ground heat flux; (ii) during freezing period all three heat fluxes do not vary apparently, in spite of the fact that the negative soil temperature is higher than that not considering soil freeze; (iii) during thawing period, ground heat flux increases, and sensible heat flux decreases, but latent heat flux does not change much; and (iv) during freezing period, soil temperature decreases, though ground heat flux increases.

关键词： land surface model,soil freeze/thaw,GAME/Tibet,simultaneous liquid,vapor and heat transfer.

Controlled synthesis and magnetic properties of Fe_3._4 walnut spherical particles and octahedral microcrystals

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science China(Technological sciences) 2008年第11期51卷 1911-1920页

作者： JIAO Hua1,2.& YANG HeQing1 1 Key Laboratory of Macromolecular science of Shaanxi Province, School of chemistry and Materials science, Shaanxi Normal {3., Xi’an 710062. China 2.department of chemistry and Chemical engineering, Weinan Teachers {3., Wei nan 714000, China Key Laboratory of Macromolecular science of Shaanxi Province School of Chemistry and Materials Science Shaanxi Normal University Xi’an China department of chemistry and Chemical {2. Weinan Teachers University Wei nan China

Magnetite Fe3.4 walnut spherical particles and octahedral microcrystals were suc- cessfully synthesized from K4 [Fe (CN) 6], K3.[Fe (CN) 6] and NaOH reagents via a simple hydrothermal process. And the uniform morphology of octahedral micro- crystals was obtained in the presence of ethylene glycol. The morphology and structure of products were characterized by powder X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The results showed that the Fe3.4 walnut spherical particles and octahedral microcrystals were single crystals with the face-center cubic structure and with size distributions from 2.2.to 8.6 μm and 1.6 to 12.5 μm, respectively. Their magnetic properties were detected by a vibrating sample magnetometer at room temperature. The walnut spherical parti- cles exhibited a ferromagnetic behavior with the coercive force (Hc), saturation magnetization (Ms) and remanent magnetization (Mr) being 150.57 Oe, 97.63. and 12.05 emu/g, respectively. For the octahedral microcrystals they were 75.2. Oe, 101.90 and 6.69 emu/g, respectively. Different sizes of walnut spherical particles were controlled synthesized through adjusting the NaOH concentration. It was found that ethylene glycol molecules have a significant effect on the formation of Fe3.4 octahedra. A possible mechanism was also proposed to account for the growth of these Fe3.4 products

关键词： a hydrothermal route Fe3.4 walnut spherical particles octahedral microcrystals magnetic property

γ-Hydroxy-α,β-acetylenic esters:asymmetric syntheses and applications

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science China chemistry 2010年第1期53卷 21-35页

作者： GAO Ge1 & PU Lin2.1department of chemistry,{2. {3.,Chengdu 610064,China 2.0} of chemistry,{3. of Virginia,Charlottesville,Virginia 2.904-43.9,USA department of chemistry Sichuan University Chengdu China department of chemistry University of Virginia Charlottesville USA

γ-Hydroxy-α,β-acetylenic esters are versatile synthetic precursors to many organic *** paper reviews the synthesis of chiral γ-hydroxy-α,β-acetylenic esters by asymmetric reduction of γ-oxo-α,β-acetylenic esters,enantioselective addition to aldehydes in the presence of chiral catalysts,and diastereoselective addition to chiral *** preparation of racemic γ-hydroxy-α,β-acetylenic esters is also *** are provided for the application of γ-hydroxy-α,β-acetylenic esters in organic synthesis.

关键词： γ-hydroxy-α β-acetylenic ester asymmetric enantioselective diastereoselective

Synthesis and crystal structure of complex of Ce(NO_3._3.with N-(3.methyl-pyridin-2.yl)-formimidoyl-(3.methyl-pyridin-2.yl) hydrazone

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science China chemistry 2004年第3期47卷 251-256页

作者： JIANG Yinzhi1,2.& HU Weixiao1 1. department of Pharmaceutical science, Zhejiang {2. of Technology, Hangzhou 3.003.0} China 2. department of Applied chemistry, Zhejiang Institute of science and Technology, Hangzhou 3.003., China department of Pharmaceutical science Zhejiang University of Technology Hangzhou China department of Applied chemistry Zhejiang Institute of Science and Technology Hangzhou China

The reaction of 3.6-di-(3.methyl-pyridin-2.yI)-s-tetrazine (DMPTZ, II) with CeIII salt [Ce(NO3.3.· 6H2.] generates a new ligand, N-(3.methyl-pyridin-2.yl)-formimidoyl-(3.methyl-pyridin-2.yl) hydrazone (L), and forms a new complex: a mononuclear complex [Ce(L)(NO3.2.(H2.)3. · NO3.(III). Crystal data for III: space group P-1, with a = 0.713.(4) nm, b = 1.113.(2. nm, c = 1.4572.3. nm, α= 102.13.2.°, β= 99.81(3.°, γ= 91.10(3.°, Z = 2. V = 1113.6(7) nm3. μ = 2.12. mm?1 and F(000) = 63.. L acts as a tri-dentate chelating ligand in III. There are 10 coordination sites around Ce3. of III, which are respectively occupied by seven oxygen atoms (four from two nitrate anions and three from three H2. molecules) and three nitrogen atoms (all from L). The cerium atom and three chelating nitrogen atoms are coplanar. The mechanism of the metal assisted decomposition is discussed briefly.

关键词： rare earth, complex, crystal structure, synthesize, 3.6-bis (3.methyl-pyridin-2.yl)-s-tetrazine, N-(3.methyl-pyridin- 2.yl)-formimidoyl-(3.methyl-pyridin-2.yl) hydrazone.

Mining and Integrating Reliable Decision Rules for Imbalanced Cancer Gene Expression Data Sets

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Tsinghua science and Technology 2012年第6期17卷 666-673页

作者： Hualong Yu 1 , Jun Ni 2., Yuanyuan Dan 3., Sen Xu 4 1. School of Computer science and engineering, Jiangsu {2. of science and Technology, Zhenjiang 2.2.03. China 2. department of Radiology, Carver College of Medicine, The {2. of Iowa, Iowa City, IA 52.42. USA 3. School of Biology and Chemical engineering, Jiangsu {2. of science and Technology, Zhenjiang 2.2.03. China 4. School of Information engineering, Yancheng Institute of Technology, Yancheng 2.4051, China School of Computer science and engineering Jiangsu University of Science and Technology Zhenjiang 212003 China department of Radiology Carver College of Medicine The University of Iowa Iowa City IA 52242 USA School of Biology and Chemical engineering Jiangsu University of Science and Technology Zhenjiang 212003 China School of Information engineering Yancheng Institute of Technology Yancheng 224051 China

There have been many skewed cancer gene expression datasets in the post-genomic era. Extraction of differential expression genes or construction of decision rules using these skewed datasets by traditional algorithms will seriously underestimate the performance of the minority class, leading to inaccurate diagnosis in clinical trails. This paper presents a skewed gene selection algorithm that introduces a weighted metric into the gene selection procedure. The extracted genes are paired as decision rules to distinguish both classes, with these decision rules then integrated into an ensemble learning framework by majority voting to recognize test examples; thus avoiding tedious data normalization and classifier construction. The mining and integrating of a few reliable decision rules gave higher or at least comparable classification performance than many traditional class imbalance learning algorithms on four benchmark imbalanced cancer gene expression datasets.

关键词： cancer gene expression data class imbalance paired differential expression genes decision ruleensemble learning majority voting

Thermal oxide synthesis and characterization of Fe_3._4 nanorods and Fe_2._3.nanowires

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science China chemistry 2009年第5期52卷 599-604页

作者： JIAO Hua1,2.& YANG HeQing1 1 Key Laboratory of Macromolecular science of Shaanxi Province, School of chemistry and Materials science, Shaanxi Normal {3., Xi’an 710062. China 2.department of chemistry and Chemical engineering, Weinan Teacher’s {3., Weinan 714000, China Key Laboratory of Macromolecular science of Shaanxi Province School of Chemistry and Materials Science Shaanxi Normal University Xi’an China department of chemistry and Chemical {2. Weinan Teacher’s University Weinan China

Fe3.4 nanorods and Fe2.3.nanowires have been synthesized through a simple thermal oxide reaction of Fe with C2.2.4 solution at 2.0-600℃ for 1 h in the air. The morphology and structure of Fe3.4 nanorods and Fe2.3.nanowires were detected with powder X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The influence of temperature on the morphology development was experimentally investigated. The results show that the polycrystals Fe3.4 nanorods with cubic structure and the average diameter of 0.5-0.8 μm grow after reaction at 2.0-500℃ for 1 h in the air. When the temperature was 600℃, the samples completely became Fe2.3.nanowires with hexagonal structure. It was found that C2.2.4 molecules had a significant effect on the formation of Fe3.4 nanorods. A possible mechanism was also proposed to account for the growth of these Fe3.4 nanorods.

关键词： thermal oxide process nanorods nanowires C2.2.4 iron sheet

Structure and Pozzolanic Activity of Calcined Coal Gangue during the Process of Mechanical Activation

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Journal of Wuhan university of Technology(Materials science) 2009年第2期24卷 326-329页

作者：郭伟 department of Material engineering Yancheng Institute of Technology Institute of Material science and engineering Nanjing University of Technology

On the basis of analyzing coal gangue＇s chemical and mineral compositions, the structure change of coal gangue during the mechanical activation was investigated by XRD, FTIR, NMR, and the mechanical strength of the cement doped coal gangue with various specific surface area was tested. The experimental results indicate that, the lattice structure of metakaolin in coal gangue samples calcined at 700 ℃ disorganizes gradually and becomes disordered, and the lattice structure of α-quartz is distorted slightly. The pozzolanic activity of the coal gangue increases obviously with its structural disorganization.

关键词： coal gangue mechanical activation structure NMR tetrahedron

Biological exposure models for oil spill impact analysis

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Journal of Environmental sciences 2000年第4期12卷 482-485页

作者： XIONG De qi 1, Mark Reed 2. Narve Ekrol 2.(1. department of Marine Environmental {3., Dalian Maritime {2., Dalian 11602., China E mail: deqi@*** 2. department of Environmental {3., SINTEF Applied chemistry Institut 大连海事大学辽宁大连 1 1 6 0 2 SINTEF Applied chemistry Institute 挪威 Trondheim 70 3 4

The oil spill impact analysis (OSIA) software system has been developed to supply a tool for comprehensive, quantitative environmental impact assessments resulting from oil spills. In the system, a biological component evaluates potential effects on exposed organisms based on results from a physico chemical fates component, including the extent and characteristics of the surface slick, and dissolved and total concentrations of hydrocarbons in the water column. The component includes a particle based exposure model for migratory adult fish populations, a particle based exposure model for spawning planktonic organisms (eggs and larvae), and an exposure model for wildlife species (sea birds or marine mammals). The exposure model for migratory adult fish populations simulates the migration behaviors of fish populations migrating to or staying in their feeding areas, over wintering areas or spawning areas, and determines the acute effects (mortality) and chronic accumulation (body burdens) from the dissolved contaminant. The exposure model for spawning planktonic organisms simulates the release of eggs and larvae, also as particles, from specific spawning areas during the spawning period, and determines their potential exposure to contaminants in the water or sediment. The exposure model for wild species calculates the exposure to surface oil of wildlife (bird and marine mammal) categories inhabiting the contaminated area. Compared with the earlier models in which all kinds of organisms are assumed evenly and randomly distributed, the updated biological exposure models can more realistically estimate potential effects on marine ecological system from oil spill pollution events.

关键词： oil spill biological exposure acute effects chronic accumulation migration of fish spawning of eggs and larvae habitat