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| 1 | 聚集性信息素和植物源信息素对松墨天牛的联合诱捕作用显示文摘我们评价了聚集性信息素和植物源信息素对松墨天牛Monochamus alternatus Hope (Coleoptera: Cerambycidae)在林间的联合诱捕作用,以期研制出更优的引诱剂控制松墨天牛成虫的危害。结果显示,樟子松墨天牛M. galloprovincialis雄虫挥发出来的聚集性信息素2-undecyloxy-1-ethanol对松墨天牛雌雄成虫均有引诱效果,而且樟子松墨天牛性信息素与植物源信息素之间相互增效作用十分显著,比性信息素或植物源信息素单独使用效果提高4~5倍。松墨天牛雌虫卵巢发育情况显示,成虫期在浙江地区大约持续4个月,松墨天牛成虫期可以分为两个阶段,第一个阶段为取食期(卵巢未成熟),从5月9日到7月9日;第二个阶段为产卵期(卵巢成熟),从6月3日到9月18日(图3),两个阶段在一段时期有重叠。聚集性信息素和植物源信息素联合应用将在防控松墨天牛危害,遏制松材线虫病传播方面发挥重要作用。 | 樊建庭 孟俊国 Baode Wang 赵莉蔺 孙江华 | 2013 | 应用昆虫学报2013，50，5： | 29 |
| 2 | Meta-analysis of the relationship between Epstein-Barr virus infection and clinicopathological features of patients with gastric carcinoma显示文摘Epstein-Barr virus (EBV) infection has been causally associated with occurrence of many malignant neoplasms. EBV-encoded small RNAs (EBERs) have been detected from about 10% of gastric carcinoma tissue cells, suggesting that EBV infection is associated with the development of gastric carcinoma. The present study pooled the data from the papers concerning EBV-related gastric cancers and performed a meta-analysis of 22 research papers. Among these papers, a total of 5475 cases with gastric cancer were enrolled, of whom 411 cases were found EBV-positive, with the EBV-positive rate being 7.5%. Among the EBV-positive gastric cancer cases, the detection rate was 11.1% in males and 3.0% in females. Compared with EBV-negative gastric cancer, EBV-positive gastric cancer had less lymph node metastasis. Based on the histological typing, of the EBV-positive gastric cancers, the diffuse type was 8.1%, and intestinal type was 8.0%. The examined specimen types included stored paraffin blocks and fresh surgically removed specimens, their EBV positive rates were 7.9% and 6.5% respectively. In terms of geographical distribution, the detection rate of EBV-positive gastric cancer was 9.4% in America, 6.1% in Asia and 9.1% in Europe. Meta-analysis showed that EBV infection occurred only in gastric cancer tissue cells and was significantly associated with the patients’ gender, lymph node metastases, and the location where tumor tissue generated and geographical distribution (P<0.05), but was not significantly associated with the patients’ histological types of tumor and the types of specimens (P>0.05). These results suggested that EBV-positive gastric cancer has distinct clinicopathological features. | LI ShuYing1,2, DU HaiJun3, WANG Zhan3, ZHOU Ling3, ZHAO XiaoYu1 & ZENG Yi3 1 College of Life Sciences, Hebei University, Baoding 071002, China 2 Department of Pathogenic Biology, Faculty of Biological Science, North China Coal Medical College, Tangshan 063000, China 3 National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention (Chinese CDC), State Key Laboratory for Infectious Disease Prevention and Control (SKLID), Beijing 100052, China | 2010 | Science China(Life Sciences)2010，53，4： | 17 |
| 3 | Experiments and reaction characteristics of liquid phase simultaneous removal of SO_2 and NO显示文摘Experiments of simultaneous removal of SO2 and NO from simulated flue gas,using NaClO2 solution as the absorbent,were carried out in a self-designed bubble reactor,and high simultaneous removal effi-ciencies of SO2 and NO were obtained under the optimal experimental conditions.The mechanism of simultaneous removal based on NaClO2 acid solutions was proposed by analyzing the removal prod-ucts.Possibility and limitation of the desulfurization and denitrification using NaClO2 acid solutions were calculated by thermodynamic methods.Experimental results of reaction kinetics for simultaneous desulfurization and denitrification indicated that the oxidation-absorption processes of SO2 and NO were divided into two zones,namely the fast and slow reaction zones.In the slow reaction zones both were zero order reactions,and in the fast reaction zones,the reaction order,rate constant and activa-tion energy of SO2 reaction with absorbent were 1.4,1.22(mol.L-1)-0.4.s-1 and 66.25kJ.mol-1,respec-tively,and 2,3.15×103(mol.L-1)-1.s-1,and 42.50 kJ.mol-1 for NO reaction,respectively. | ZHAO Yi,LIU Feng,GUO TianXiang & ZHAO Yin School of Environmental Science and Engineering,North China Electric Power University,Baoding 071003,China | 2009 | Science China(Technological Sciences)2009，52，6： | 15 |
| 4 | Microstructure and mechanical properties of Mg-5Li-1Al sheets prepared by accumulative roll bonding显示文摘Ultrafine-grain and high-strength Mg-5Li-1Al sheets were prepared by accumulative roll bonding(ARB)process. Evolution of microstructure and mechanical properties of ARB-processed Mg-5Li-1Al sheets was investigated.Results show that, during ARB process, the evolution of deformation mechanism of t Mg-5Li-1Al alloy is as follows: twinning deformation, shear deformation, forming macro shear zone, and finally dynamic recrystallization(DRX). The grain refining mechanism changes from twin DRX to rotation DRX. With the increase in ARB cycles, strength of the Mg-5Li-1Al sheets is enhanced, whilst elongation varies slightly.With the increase in rolling cycles, anisotropy of mechanical properties decreases. It is conclusive that strain hardening and grain refinement dominate the strengthening mechanism of Mg-5Li-1Al alloy. | Legan Hou Tianzi Wang Ruizhi Wu Jinghuai Zhang Milin Zhang Anping Dong Baode Sun Sergey Betsofen Boris Krit | 2018 | Journal of Materials Science & Technology2018，34，2： | 13 |
| 5 | 光肩星天牛对白桦林的危害及药剂防治效果显示文摘Data from a survey in the Hasi Mountain areas of Jinyuan County in Gansu province of China showed that 83.3% white birch(Betula platyphylla) stand was infested by the Asian longhorned beete,Anoplophroa glabripennis.The longevity of the beetles was(41.2±11.5) days for a male and(39.1±13.1) days for a female when twigs of white birch were used as a sole source of food for the adult beetles.The area of twig barks consumed by a pair of beetles in their life time was(9.93±8.15) cm2.A female can make(12.4±12.1) egg pits in average during the period when they were alive and caged.If removal of the infested tree is used as a management measure,it must be excuted consecutively for two years to be effective.Field tests were conducted in 2005 and 2006 to treat infested trees with imidacloprid through trunk injection,soil injection,and soil drench.The results showed that the number of dead adults under the treated trees was 6.3 times for trunk injection,5.1 times for soil injection,and 4.9 times for soil drench more than that under the untreated control.The number of live larvae decreased by 95.8% for trunk injection,83.3% for soil injection,and 85.5% for soil drench in comparison with larva mortality in control.The number of egg pits made on tree trunks by an adult was decreased by 87.1%、77.4%and 82.6%for imidacloprid trough trunk injection,soil injection,and soil drench,respectively,compared with the untreated control. | 高瑞桐 Wang Baode Victor C. Mastro 李玉琴 王彦 杨晓民 | 2009 | 林业科学2009，45，2： | 11 |
| 6 | 桑科中4种桑天牛寄主植物的挥发物成分研究显示文摘采用动态顶空和气相色谱-质谱联用技术,对桑天牛的主要桑科寄主桑树、构树、柘树和无花果等4种植物的挥发性物质进行检测,以期找出对桑天牛有引诱作用的行为化学物质。结果表明,4种植物分别鉴定出31种、30种、29种和27种化合物,主要为烯类、酯类、醛类、醇类等。4种寄主植物共有的化合物共11种,分别是叶醇、正辛醇、苯甲醛、壬醛、癸醛、1-辛烯、罗勒烯、乙酸叶醇酯、正十六烷、2,6-二叔丁基对甲酚和2,4-二叔丁基苯酚。 | 张琳 许志春 WANG Baode | 2011 | 生态学报2011，31，24： | 10 |
| 7 | The contribution of absorption of integral nanocrystals to enhancement of oral bioavailability of quercetin显示文摘In this study,self-discriminating hybrid nanocrystals was utilized to explore the biological fate of quercetin hybrid nanocrystals(QT-HNCs)with diameter around 280 nm(QT-HNCs-280)and550 nm(QT-HNCs-550)following oral and intravenous administration and the contribution of integral nanocrystals to oral bioavailability enhancement of QT was estimated by comparing the absolute exposure of integral QT-HNCs and total QT in the liver.Results showed that QT-HNCs could reside in vivo as intact nanocrystals for as long as 48 h following oral and intravenous administration.A higher accumulation of integral QT-HNCs in liver and lung was observed for both oral and intravenous administration of QT-HNCs.The particle size affects the absorption and biodistribution of integral QT-HNCs and total QT.As compared to QT-HNCs-550,QT-HNCs-280 with smaller particle size is more easily absorbed,but dissolves faster in vivo,leading to higher distribution of QT(146.90 vs.117.91 h·mg/mL)but lower accumulation of integral nanocrystals(6.82 e10 vs.15.27 e10 h·[p/s]/[μW/cm2])in liver following oral administration.Due to its slower dissolution and enhanced recognition by RES,QT-HNCs-550 with larger diameter shows higher liver distribution for both of QT(1015.80 h·mg/mL)and integral nanocrystals(259.63 e10 h·[p/s]/[μW/cm2])than those of QT-HNCs-280(673.82&77.66 e10 h·[p/s]/[μW/cm2])following intravenous administration.The absolute exposure of integral QT-HNCs in liver following oral administration of QT-HNCs are 8.78%for QT-HNCs-280 and 5.88%for QT-HNCs-550,while the absolute exposure of total QT for QT-HNCs-280 and QT-HNCs-550 are 21.80%and 11.61%,respectively.Owing to imprecise quantifcation method,a surprisingly high contribution of integral QT-HNCs to oral bioavailability enhancement of QT(40.27%for QT-HNCs-280 and 50.65%for QT-HNCs-550)was obtained.These results revealed signifcant difference in absorption and biodistrbution between integral nanocrystals and overall drugs following oral and intravenous administration of QT-HNCs,and provided a meaningful reference for the contribution of integral nanocrystals to overall bioavailability enhancement. | Baode Shen Chengying Shen Weifeng Zhu Hailong Yuan | 2021 | Acta Pharmaceutica Sinica B2021，11，4： | 10 |
| 8 | Relationship of particle stimulated nucleation,recrystallization and mechanical properties responding to Fe and Si contents in hot-extruded 7055 aluminum alloys显示文摘The variations of coarse intermetallic particles in hot-extruded 7055 aluminum alloys with 0.041 wt%Fe and 0.024 wt%Si increasing to 0.272 wt%Fe and 0.134 wt%Si were investigated.The particle stimulated nucleation(PSN)behaviors for different kind of coarse particles were detailly analyzed by EBSD.Moreover,the effect of PSN responding to Fe and Si contents on recrystallization and tensile properties of 7055 alloys was evaluated.With increasing Fe and Si contents,the size and number density of coarseη/S particles are reduced,while the number densities of coarse Al7Cu2 Fe and Mg2Si particles are both increased and the coarse Al7Cu2 Fe particles transform from rod-like to irregular.More PSN recrystallized grains with predominant orientations deviated from the extruded fiber textures are stimulated by the irregular Al7Cu2 Fe and Mg2Si particles,because a higher degree of local non-uniform deformation is produced.The rod-like Al7Cu2 Fe particles cause the greatest degree of local non-uniform deformation owing to the largest aspect ratio,but the shape also restricts the area of particle deformation zone(PDZ)resulting in fewer PSN recrystallized grains.The irregularη/S particles give rise to the lowest degree of local non-uniform deformation and fewest PSN recrystallized grains with the major orientations close to the extruded fiber textures.Consequently,despite the number and size of coarseη/S particles are reduced,the proportion of high angle grain boundaries(HAGBs)is increased and the extruded fiber textures are weakened with Fe and Si contents increasing,because of the increased Al7Cu2 Fe and Mg2Si particles.The strength is slightly declined by the weakened<111>//ED(extrusion direction)fiber texture,while the elongation is reduced for a larger number of coarse particles and more HAGBs with higher Fe and Si contents. | Huan She Da Shu Anping Dong Jun Wang Baode Sun Hongchang Lai | 2019 | Journal of Materials Science & Technology2019，35，11： | 10 |
| 9 | Study on method and mechanism for simultaneous desulfurization and denitrification of flue gas based on the TiO_2 photocatalysis显示文摘Based on the TiO2 photocatalysis mechanism, a new method of simultaneous desulfurization and denitrification from flue gas was proposed. Preparation of TiO2 photocatalyst, design of photocatalysis reactor and influencing factors for simul- taneous removal of SO2 and NO, and removal mechanism of SO2 and NO were studied. After the optimal values of concentration of O2 in flue gas, the relative humidity of flue gas and the irradiation time in the photocatalysis reactor were used, the efficiencies of removal for SO2 and NO can be achieved above 98% and about 67%, respectively. According to the results of removal products analysis, the re- moval mechanism of SO2 and NO based on TiO2 photocatlysis can be put forward, namely, SO2 was oxidized to SO3 partly, the bulk of NO was oxidized to NO2, and both were removed by resorbing finally. | ZHAO Yi, ZHAO Li, HAN Jing, XU YongYi & WANG ShuQin School of Environmental Science & Engineering, North China Electric Power University, Baoding 071003, China | 2008 | Science China(Technological Sciences)2008，51，3： | 9 |
| 10 | Climatic variation of tropical cyclones affecting China during the past 50 years显示文摘Trends of the tropical cyclones (TCs) influence on China and its four subregions,namely the South China (SC),East China (EC),Northeast China (NEC),and China's inland area (CI),are detected by applying quantile regression to the CMA-STI tropical cyclone best track and related severe wind and precipitation observation datasets.The results indicate that in the past 50 years,the number of TCs affecting China and its four subregions has remained steady,except that the frequency in extremely active years has decreased not only in China as a whole,but also in NEC.In addition,TC activity is found to have weakened over the northwest South China Sea,Guangdong,and Shandong Peninsula.However,the most important changes in seasonality are found in the first quartiles of the number of days of TCs affecting CI.While the extreme values of sustained winds all have decreasing trends,the extreme values of wind gusts are completely different not only among different orders of extreme values,but also among different subregions.However,the trends of extreme TC rainfall,namely the maximum storm precipitation and the maximum 1-h precipitation,are not significant. | YING Ming YANG YuHua CHEN BaoDe ZHANG Wei | 2011 | Science China Earth Sciences2011，54，8： | 8 |
| 11 | 星天牛趋光性研究初报显示文摘星天牛Anoplophora chinensis(Forster)是在我国常见的一种钻蛀性害虫。本研究利用不同光源对星天牛进行了趋光性筛选试验,常规光源筛选结果表明星天牛UV诱虫灯趋光性较强,特定波长光源结果表明星天牛对波长为340 nm、365 nm和380 nm的近紫外光趋光性最强。应用诱虫灯监测和防治害虫应注意光源的选择。 | 黄咏槐 黄少彬 刘海军 Baode WANG 胡学难 黄焕华 | 2014 | 环境昆虫学报2014，36，2： | 7 |
| 12 | 花曲柳窄吉丁潜在飞行能力初步研究显示文摘为了评估花曲柳窄吉丁的飞行潜能,利用昆虫飞行磨系统测定雌雄花曲柳窄吉丁成虫在不同光照时间、交配状态、取食状态和日龄条件下的飞行能力。结果表明:雌虫24 h内最远飞行距离5 500 m,雄虫最远飞行距离1 397m,雌雄成虫间飞行距离差异显著;雌虫在24 h光照时间下飞行距离比L/D(昼/夜)=16 h/8 h光照周期下更远;交配雌虫与未交配雌虫在飞行距离上有显著差异,交配后雌虫飞行距离更远,而交配对雄虫飞行能力无显著影响;经取食并休息的雌虫飞行距离显著大于不取食不休息的雌虫;不同日龄未取食的花曲柳窄吉丁雌虫飞行能力存在一定差异,1日龄飞行能力最弱,13日龄最强,从1~2日龄开始飞行距离增加,2~4日龄飞行距离随日龄增加而减少,而在4日龄后飞行距离又随着日龄的增加而增加。说明花曲柳窄吉丁具有较长距离飞行的潜能,这可为该虫的传播扩散和风险评估提供一定依据。 | 王辉 许志春 Baode Wang 骆有庆 | 2015 | 北京林业大学学报2015，37，1： | 7 |
| 13 | Security region based real and reactive power pricing of power system显示文摘This paper develops a novel model and an algorithm of security region based real and reactive power pricing of power systems.In the proposed model,the reactive power production cost is represented as the opportunity cost.The static voltage stability region in the cut set power space(CVSR) and the practical dynamic security region(PDSR) in the injection power space are used to represent the constraints of voltage stability and transient stability,so that the consideration of this kind of constraints in the optimization becomes very easy.In the proposed algorithm,a decoupled optimization and iteration method of active power production cost and reactive power production cost is suggested.According to the K-T optimality conditions,the prices of active power and reactive power,and the different components corresponding to the concerned security constraints are derived.The components of spot prices can reflect the influence of different node power injections on each kind of security constraints,so that through the node price all of the participants in power market can be stimulated to take an active part in maintaining the system security.An illustrative example on the New England 10-genetator 39-bus System is used to demonstrate the proposed method. | YU YiXin1 & WANG YanJun1,2 1 Key Laboratory of Power System Simulation and Control of Ministry of Education,Tianjin University,Tianjin 300072,China 2 College of Mechanical and Electrical Engineering,Agriculture University of Hebei,Baoding 071001,China | 2008 | Science China(Technological Sciences)2008，51，12： | 7 |
| 14 | Current distribution and stability of LTS/HTS hybrid superconducting conductors显示文摘Current distribution and stability of a hybrid LTS/HTS superconductor, consisting of multifilamentary NbTi/Cu and Bi2223/Ag tapes, were numerically analyzed according to power-law models. The results showed that most of current passed through the LTS and the current increased in the HTS with temperature rise when the transport current was below the critical current of the hybrid conductor. The quench propagation velocity of the hybrid conductor was smaller but its minimum quench energy was larger than those of LTS conductors, indicating that the stability of the hybrid superconducting conductor was effectively improved and a high engineering current density was simultaneously achieved. Finally, a hybrid sample, made by soldering Bi2223/Ag tape onto NbTi/Cu conductor, was prepared and tested successfully at helium temperature. The experimental results qualitatively agreed with the simulated ones. | GUAN XiaoJin1,2, WANG YinShun1 & ZHOU WeiWei3 1 Key Laboratory of HV and EMC Beijing, North China Electric Power University, Beijing 102206, China 2 Department of Physics, Baoding University, Baoding 071000, China 3 Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China | 2010 | Science China(Technological Sciences)2010，53，7： | 6 |
| 15 | Statistical theory for hydrogen bonding fluid system of A_aD_d type (I): The geometrical phase transition显示文摘The influence of hydrogen bonds on the physical and chemical properties of hydrogen bonding fluid system of AaDd type is investigated from two viewpoints by the principle of statistical mechanics. In detail, we proposed two new ways that can be used to obtain the equilibrium size distribution of the hydrogen bonding clusters, and derived the analytical expression of a relationship between the hydrogen bonding free energy and hydrogen bonding degree. For the nonlinear hydrogen bonding systems, it is shown that the sol-gel phase transition can take place under proper conditions, which is further proven to be a kind of geometrical phase transition rather than a thermodynamic one. Moreover, several problems associated with the geometrical phase transition and liquid-solid phase transition in nonlinear hydrogen bonding systems are discussed. | WANG Haijun1,2, HONG Xiaozhong3, GU Fang1 & BA Xinwu1 1. College of Chemistry and Environment Science, Hebei University, Baoding 071002, China 2. International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China 3. College of Physics Science and Technology, Hebei University, Baoding 071002, China | 2006 | Science China Chemistry2006，49，6： | 6 |
| 16 | Surface modification of hydrophobic NaYF_4:Yb,Er upconversion nanophosphors and their applications for immunoassay显示文摘β-NaYF4:Yb,Er upconversion nanophosphor (UCNP) is known as one of the most efficient NIR-to-visible upconversion materials, which shows great potential in bioanalytical chemistry and bioimaging. However, its applications are greatly limited due to its low water dispersibility and thus poor biocompatibility. In this paper, poly(acrylic acid) (PAA)-based ligand exchange strategies are carried out to modify oleic acid-capped hydrophobic β-NaYF4:Yb,Er UCNPs into hydrophilic ones. After efficient surface modification, the presence of free carboxylic acid groups on the surfaces of UCNPs results in high solubility in water, and also allows further conjugation with NH2-containing biomolecules. Facilitated by the covalent linkage between the-COOH groups on UCNPs surfaces and -NH2 groups in antigen/antibody, a sensitive immunosensor is constructed by using PAA-functionalized β-NaYF4:Yb,Er UCNPs as biolabels. Through monitoring the upconversion fluorescence intensity or fluorescent imaging of the final immunocomplexes, high sensitivity is achieved for the proposed immunoassay and as low as 0.1 ng/mL goat anti-human immunoglobulin G (IgG) can be detected, which suggests that PAA-modified UCNPs may serve as an ideal candidate for use as bioanalysis and bioimaging probes. | LIU ChengHui, WANG Zhe, WANG XiaoKe & LI ZhengPing Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China | 2011 | Science China Chemistry2011，54，8： | 6 |
| 17 | Analysis of the ore-controlling structure of the Shihu gold deposit, Hebei Province and deep-seated ore-prospecting prediction显示文摘Under the guidance of the theory of mantle-branch structure-associated metallogenesis and on the basis of the geological characteristics, analysis of the ore-forming and ore-controlling structures, the geochemical characteristics of metallogenesis, the source of ore-forming materials, changes in the physical and chemical conditions of metallogenesis, changes in the vertical width of ore veins, and changes in gold grade of the Shihu gold deposit, the mechanism of its metallogenesis was discussed and the rules of vertical variation of ore veins were summarized in this study. It is pointed out that the orebodies under exploitation at present time should be in the middle and upper portions of gold veins in the Shihu gold mining district. Particularly on the basis of the characteristics of mantle-branch structure-associated metallogenesis, it is indicated that metallogenesis is controlled mainly by such ore-forming conditions as temperature and pressure. Deep-seated ore-forming fluids are characterized mainly by injection and precipitation. So the vein bodies in the adjacent metallogenic structures are of obvious comparability, and there would be great prospects for ore search both at depth and in the periphery of the Shihu gold deposit. Therefore, ore prospecting should be strengthened both at depth and in the peripheries. | NIU Shuyin WANG Baode SUN Aiqun CHEN Chao WANG Zili MA Baojun WANG Wenxue JIANG Xiaoping ZHAO Yongli GAO Yincang LIU Huabin QIU Jianping | 2009 | Chinese Journal Of Geochemistry2009，28，4： | 6 |
| 18 | Temporal-spatial distribution and ore-forming material source of gold,copper and silver polymetallic ore deposits in the Fuping mantle structure zone显示文摘This study was conducted following research on metallogenesis in the Zhangjiajie-Xuanhua and East Hebei mantle branch structure zones. The Fuping mantle branch structure zone is one where Au, Cu and Ag poly-metallic ore resources are concentrated in North Hebei. However, there has existed a long-standing controversy on the temporal-spatial distribution of ore resources and their ore-forming material sources. In terms of age dating and the comprehensive analysis of S, Pb, O, C and Si isotopes, it is considered that the temporal-spatial distribution of ore resources in this mantle branch structure zone is obviously controlled by the Fuping mantle branch structure. In space there is developed such a metallogenic pattern as to be Ag, Pb and Zn polymetallic ore deposits with gold appearing inside and copper appearing outside. Metallogenesis is dated mainly at Yanshanian, the ore-forming materials were derived predominantly from the deep interior of the Earth, and ore-forming fluids were derived largely from Yanshanian magmatism. | WANG Baode NIU Shuyin SUN Aiqun LIU Yaming XIE Yan JIANG Xiaoping ZHAO Yongli GAO Yincang ZHAO Fuwang | 2010 | Chinese Journal Of Geochemistry2010，29，3： | 6 |
| 19 | Real-variable characterizations of anisotropic product Musielak-Orlicz Hardy spaces显示文摘Let A :=(A_1, A_2) be a pair of expansive dilations and φ : R^n×R^m×[0, ∞) → [0, ∞) an anisotropic product Musielak-Orlicz function. In this article, we introduce the anisotropic product Musielak-Orlicz Hardy space H~φ_A(R^n× R^m) via the anisotropic Lusin-area function and establish its atomic characterization, the g-function characterization, the g_λ~*-function characterization and the discrete wavelet characterization via first giving out an anisotropic product Peetre inequality of Musielak-Orlicz type. Moreover, we prove that finite atomic decomposition norm on a dense subspace of H~φ_A(R^n× R^m) is equivalent to the standard infinite atomic decomposition norm. As an application, we show that, for a given admissible triplet(φ, q, s), if T is a sublinear operator and maps all(φ, q, s)-atoms into uniformly bounded elements of some quasi-Banach spaces B, then T uniquely extends to a bounded sublinear operator from H~φ_A(R^n× R^m) to B. Another application is that we obtain the boundedness of anisotropic product singular integral operators from H~φ_A(R^n× R^m) to L~φ(R^n× R^m)and from H~φ_A(R^n×R^m) to itself, whose kernels are adapted to the action of A. The results of this article essentially extend the existing results for weighted product Hardy spaces on R^n× R^m and are new even for classical product Orlicz-Hardy spaces. | FAN XingYa HE JianXun LI BaoDe YANG DaChun | 2017 | Science China Mathematics2017，60，11： | 5 |
| 20 | Epigenetic reprogramming in mammalian nuclear transfer显示文摘Somatic cloning has been succeeded in some species, but the cloning efficiency is very low, which limits the application of the technique in many areas of research and biotechnology. The cloning of mammals by somatic cell nuclear transfer (NT) requires epigenetic reprogramming of the differentiated state of donor cell to a totipotent, embry-onic ground state. Accumulating evidence indicates that in-complete or inappropriate epigenetic reprogramming of do-nor nuclei is likely to be the primary cause of failures in nu-clear transfer. This review summarizes the roles of various epigenetic mechanisms, including DNA methylation, histone acetylation, imprinting, X-chromosome inactivation, te-lomere maintenance and expressions of development-related genes on somatic nuclear transfer. | LI Shijie1,2, DU Weihua1 & LI Ning1 1. State Key Laboratory for Agrobiotechnology, China Agricultural University, Beijing 100094, China 2. Department of Biochemistry and Molecular Biology, College of Life Science, Hebei Agriculture University, Baoding 071001, China Correspondence should be addressed to Li Ning (e-mail: ninglbau@ public3.bat.net.cn) | 2004 | Chinese Science Bulletin2004，49，8： | 5 |
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