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| 1 | Effects of surface states over core-shell Ni@SiO_2 catalysts on catalytic partial oxidation of methane to synthesis gas显示文摘In the present work, core-shell Ni@Si O2 catalysts were investigated in order to evaluate the relevance of catalytic activity and surface states of Ni core as well as Ni nanoparticles size to catalytic partial oxidation of methane(POM). The catalysts were characterized by N2 adsorption,H2-TPR, XRD, TEM and XPS techniques. The catalytic performance of the core-shell catalysts was found to be dependent on the surface states of catalyst, which influenced the formation of products. It was considered that carbon dioxide formed on the oxidized nickel sites(Ni O)and carbon monoxide produced on the reduced sites(Ni). The surface states of active metal in the dynamic were influenced both by the size of Ni core and the porosity of silica shell. However, the catalytic activity would be debased when the size of Ni core was under a certain extent,which can be ascribed to the fact the carbon deposition increased with the increasing content of Ni O. The effects of surface states of Ni@Si O2 catalyst on the catalytic performance were discussed and the reaction pathway over Ni core encapsulated inside silica shell was proposed. | Chuanmin Ding Xiaofeng Gao Yulin Han Xishun Ma Junwen Wang Shibin Liu Kan Zhang | 2015 | Journal of Energy Chemistry2015，24，1： | 2 |
| 2 | Y_CΩ_(2n)are easy terms显示文摘For any natural number n≥1, Y CΩ 2n is an easy term; that is, for any λ term M, λβ+Y\-CΩ 2n =M is consistent, where Y C is Curry fixed point combinator, Ω 2n ≡ω 2n ω 2n and ω 2n ≡λx.xx...x (there are 2n occurrences of x after λx ). This result is a partial solution to Jacopini’s conjecture: Y CΩ n is an easy term for any natural number n≥2. | ZHAO Xishun 1 and WANG Ju 2 1. Department of Mathematics, Nanjing University, Nanjing 210093, China 2. Institute of Software, Chinese Academy of Sciences, Beijing 100080, China | 1998 | Chinese Science Bulletin1998，43，20： | 2 |
| 3 | Boolean functions as models for quantified boolean formulas 显示文摘 | Buning H K Subramani K Zhao Xishun | 2007 | Journal of Autom Reasoning2007，39，1： | 1 |
| 4 | The complexity of some subclasses of minimal unsatis able formulas 显示文摘 | Buning H K Zhao Xishun | 2007 | JSAT2007，3，12： | 1 |
| 5 | CT evaluation of cervical pedicle in a Chinese population for surgical application of transpedicular screw placement显示文摘 | Zhu Ruofu Yang Huilin Hu Xiaoyun He Xishun Tang Tiansi Chen Liang Li Xigong | 2008 | Surgical and Radiologic Anatomy2008，，5： | 1 |
| 6 | The formation evaluation tool and its application in offshore China显示文摘在论文介绍的形成评估工具(联邦货物税) 表示形成评估系统的新一代由限制的中国油矿服务(COSL ) 发展了并且生产, CNOOC 用从 Crocker 研究的联邦货物税技术转移,澳大利亚。系统在 Bohai 海和华南海成功地被使用了。例如,一个 multilayered 油和水系统在精确形成压力测试的帮助下被证实了,甚至在很薄的床和边水水库上,克服决定这种油水和煤气水的接触的困难。而且,抽的 FET 和即时液体监视功能允许获得由钻在决定目标阶层的液体性质并且分析液体部件起一个重要作用的泥未受污染的形成液体的一件真样品。形成评估工具(联邦货物税) 的原则和目的将简短被介绍,技术的应用程序的成功的例子将在这篇论文详细被描述。 | Liu Jianxin Zhang Conghui Pang Xishun | 2006 | Applied Geophysics2006，3，1： | 1 |
| 7 | Polynomial time algorithms for computing a repre - sentatlon for minimal unsatisfiable formulas with fixed deficiency显示文摘 | Kleine Büning H Zhao Xishun | 2002 | Information Pro - cessing Letters2002，84，： | 1 |
| 8 | 'APreliminaryAnalysisoftheCharacteristicsofSpecializedHouseholds-PeasantHouseholdSamplesInvestigatedinSichuan’’(专业家庭特点浅析-四川省农民家庭抽样调查情况)显示文摘 | Zhao Xishun | 1985 | 社会科学研究1985，1，： | 1 |
| 9 | Laboratory performance evaluation SMA, CMHB and dense graded asphalt mixtures显示文摘 | Mohammad Louay ZHANG Xishun HUANG Baoshan | 1999 | AAPT1999，68，： | 1 |
| 10 | To take a clean technology as a strategy for pollution control in industry显示文摘A clean technology in thermal power station by adding of limestone into coal for getting the co-melted compounds was studied. Comparing with conventional technology, the quantity of ash discharged is decreased from 85% to 15%, the water consumption is 80% less than traditional method. The slag discharged could be used as raw materials for cement and bricks. In addition, the SO2 content is decreased as well. | Shi QingNational Environmental Protection Agency, Beijing 100035, ChinaLiu XishuNational Natural Science Foundation of China, Beijing 100083, China | 1993 | Journal of Environmental Sciences1993，5，1： | 0 |
| 11 | Diamond Modeling in World Lithium Brine Utilization Assessment显示文摘The global transition away from hydrocarbons toward energy alternatives increases demand for many scarce metals.Among these is lithium,a key component of lithium-ion batteries for electric and hybrid vehicles. | WU Xishun HUANG Wenbin YANG Tiantian SUN Zhangtao LI Li | 2014 | Acta Geologica Sinica(English Edition)2014，88，S1： | 0 |
| 12 | Being a Mother for the First Time显示文摘BeingaMotherfortheFirstTimeByZHAOXISHUNBYTHEendofthe1980swhenthefrontiertradebetweenChinaandtheformerSoviedUnionwasflourishin... | ZHAO XISHUN | 1996 | China Today1996，45，5： | 0 |
| 13 | Instantaneous Electron Concentration in Crystalline Insulator Foils Being Irradiated by Charge-Neutral Rays显示文摘In this paper,we present an analytical solution of the steady and transient electron concentration in a crystalline insulator film exposed to a charge-neutral radiation.If a single,deep electron trap level is supposed,the steady conductivity is found to coincide with the power law.An asymptotic exponential solution of transient electron concentration has also been got when the irradiation-time is very large. | XIE Xishun GUAN Xiaosheng HUANG Xiaoqin | 1994 | Chinese Physics Letters1994，11，7： | 0 |
| 14 | Theoretical Calculation of Delayed Radiation Induced Conductivity in Electron Beam Charged Polymer Foils显示文摘In this paper,We present the result of theoretical calculation of delayed radiation induced conductivity(DRlC)in charge free neutral polymer foils,which are irradiated by impenetrable electron beam.If a single trap level and a constant charge distribution are supposed in the irradiated region,within a very short time,DRIC of a charged film is found to vary hyperbolicly.It is just as that of charge free neutral material.But when t is infinite,the electrons in the conduction band of a charged film do not decay to zero.The DRIC will change exponentially for larger time. | XIE Xishun HUANG Xiaoqin | 1993 | Chinese Physics Letters1993，10，7： | 0 |
| 15 | More on Bounding Introspection in Modal Nonmonotonic Logics | Xishun Zhao Decheng Ding Department of Mathematics. Nanjing University. Nanjing 210093, P. R. China | 2000 | Acta Mathematica Sinica,English Series2000，16，4： | 0 |
| 16 | Metallurgical investigations of dry sliding surface layer in phosphorous iron/steel friction pairs显示文摘Surface layer behaviors of composition concentration and micro-hardness were inves-tigated on phosphorous cast irons after dry sliding. The experimental results indicate that thehardness and chemical composition unevenly distribute in the surface layer. The sliding conditionand microstructure of the pin specimen have greatly effects on the distributions. | ZHANG Yongzhen CHEN Yue SHANGGUAN Bao TIE Xishun NI Feng Dept. of Materials, Luoyang Institute of Technology, Luoyang 471039, China | 2001 | Science China Mathematics2001，44，S1： | 0 |
| 17 | Proof systems for planning under 0-approximation semantics显示文摘In this paper we propose Hoare style proof systems called PR0Dand PRKW0Dfor plan generation and plan verification under 0-approximation semantics of the action language AK.In PR0D(resp.PRKW0D),a Hoare triple of the form{X}c{Y}(resp.{X}c{KWp})means that all literals in Y become true(resp.p becomes known)after executing plan c in a state satisfying all literals in X.The proof systems are shown to be sound and complete,and more importantly,they give a way to efficiently generate and verify longer plans from existing verified shorter plans by applying so-called composition rule,provided that an enough number of shorter plans have been properly stored.The idea behind is a tradeoff between space and time,we refer it to off-line planning and point out that it could be applied to general planning problems. | SHEN YuPing ZHAO XiShun | 2014 | Science China(Information Sciences)2014，57，7： | 0 |
| 18 | Environmental Factors Influencing Seed Germination Characteristics of Vicious Weed Green Foxtail显示文摘[Objective] The paper was to optimize the optimal conditions for seed germination and seedling emergence of green foxtail [Setaria viridis(L.)Beauv.],so as to solve the problem of serious damage caused by green foxtail. [Method] Using the orthogonal test and the LSD method of software SPSS 18.0,with the number of emerged seedlings of green foxtail as the evaluation index,the influencing factors such as pretreatment of green foxtail,earth covering depth,soil temperature and soil moisture content were compared in the test. [Result] These four experimental factors had great impact on seed germination characteristics of green foxtail. The optimal scheme for seedling emergence of green foxtail was as follows: pretreatment of green foxtail for 3 d,earth covering depth 0.5 cm,soil temperature 32 ℃,soil moisture content 15%. The optimum condition was consistent with the actual situation of serious damage of green foxtail (suffering moderate and heavy rainfall after sowing and before seedling of millet). Avoiding sowing millet before moderate and heavy rainfall could effectively control serious damage of green foxtail. [Conclusion] The study provided theoretical support for effective control against the vicious weed green foxtail. | Lv Peng Duan Xishun Bo Kuiyong Zhao Yu Hou Shenglin Wang Xinyu Jia Haiyan Ma Xue Xiang Ji-nying Liu Huan Zhou Hanzhang | 2013 | Plant Diseases and Pests2013，4，3： | 0 |
| 19 | Study on Analysis Model of Millet Yield Loss Caused by Weeds in Summer Season Millet Field显示文摘Weed management in summer season foxtail millet field was studied by evaluating weed damage and exploring competition between weeds and foxtail millet,and a few fitting models were simulated and compared by employing field plot experiment and nonlinear regression analysis.The results showed that the millet yield losses and weed density were extremely significantly correlated.Among the tested models,the determination coefficient (R 2) of hyperbolic model was 0.997 12,and minimum residual sum of squares was 16.174,which was considered the optimal model to simulate the competition relation between weeds and millet.The predicted equation was Y=d /(1.733 + 0.018d);the interspecific competitiveness of weeds was 0.577 0 and the intraspecific competitiveness was 0.010 3 ;the maximum loss rate of millet yield was 55.56%.This study had established an analysis model with high goodness-of-fit and practical prediction which could help weed management in summer season millet field. | Lv Peng Duan Xishun Liu Hongxia Hou Shenglin Bo Kuiyong Wang Xinyu Xiang Jinying Ma Xue Jia Haiyan Zhou Hanzhang | 2013 | Plant Diseases and Pests2013，4，2： | 0 |
| 20 | 微囊藻毒素-LR亚慢性染毒对Bcl-2和Bax表达的影响(英文)显示文摘Objective:We explored the role and molecular mechanism of Microcystin-LR(MC-LR) in hepatocarcinogenesis.Methods:The two-stage-medium-term theory was applied to the establishment of the animal model.The promoting effect of MC-LR on liver tumor was evaluated with the Albert γ-GT methods.During the tumor-promoting course,the effects of MC-LR on the regulation and expression of the Bcl-2 and Bax genes were studied with immunohistochemical technique and RT-PCR.Results:MCLR could enhance the positive reaction of Albert γ-GT(GGT),a preneoplasm marker.The positive reaction rate of GGT in diethylnitrosamine(DEN) + MC group was significantly higher than that in the DEN control group.The protein and RNA expression of Bcl-2 was significantly increased by MC-LR,and that the protein expression of Bax was decreased simultaneously.Conclusion:These results indicate that the MC-LR can inhabit apoptosis through the Bcl-2 and Bax genes.Therefore,we conclude that the expression change of Bcl-2 and Bax genes possibly plays an important role in the promotion of liver tumor by MC-LR. | Zhijian Hu Hua Chen Jinfa Xue Xiaoyang Zhang Xishun Shi Hong Zou | 2010 | The Chinese-German Journal of Clinical Oncology2010，9，2： | 0 |
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