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Journal of Ocean University of China 2017年第1期16卷 25-34页

作者： WANG Xiao biAN Changwei bi Rong JIANG Wensheng ZHANG Hua ZHANG Xueqing Key Laboratory of Marine Environment and Ecology Ocean University of ChinaQingdao 266100P.R.China Key Laboratory of Physical Oceanography Ocean University of ChinaQingdao 266003P.R.China Key Laboratory of Marine Chemistry Theory and Technology Ocean University of ChinaQingdao 266100P.R.China Yantai Institute of Coastal Zone Research Chinese Academy of ScienceYantai 264003P.R.China

Laser in situ scattering and transmissometry(LISST) significantly improves our ability to assess particle size distribu-tion(PSD) in seawater, while wide-ranging measurements of the organic-inorganic compositions of suspended particulate matters(SPM) are still difficult by using traditional methods such as microscopy. In this study, PSD properties and SPM compositions around the Bohai Strait(China) were investigated based on the measurements by LISST in combination with hydro-biological parameters collected from a field survey in summer 2014. Four typical PSD shapes were found in the region, namely right-peak, left-peak, dou-ble-peak and negative-skew shapes. The double-peak and negative-skew shapes may interconvert into each other along with strong hydrodynamic variation. In the upper layer of the Bohai Sea, organic particles were in the majority, with inorganic particles rarely observed. In the bottom layer, SPM were the mixture of organic and inorganic matters. LISST provided valuable baseline information on size-resolved organic-inorganic compositions of SPM: the size of organic particles mainly ranged from 4 to 20 μm and 40 to 100 μm, while most SPM ranging from 20 to 40 μm were composed of inorganic sediment.

关键词： particle size distribution phytoplankton sediment field survey Bohai Sea

Sphere-to-rod transition of short-chain PEO-b-PDMS-b-PEO in aqueous solution induced by copolymer concentration

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Chinese Chemical Letters 2008年第11期19卷 1363-1366页

作者： Xiao Li Zhan bi Chen qing Hua Zhang Ling Min Yi College of Materials Science and Chemical Engineering Zhejiang University Hangzhou 310027 China Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China

A short-chain triblock copolymer EO9-DMS7-EO9 was synthesized by coupling reaction of allyl-terminated poly（ethylene oxide） and Si-H-terminated poly（dimethylsiloxane）. The structure and purity of synthesized copolymer was carefully characterized. Self-assembly behavior of EO9-DMST-EO9 triblock copolymer in water was investigated. And it was found that along with the increase of copolymer concentration, morphology of self-assembled aggregates transits from sphere to rod. A plausible understanding of the morphology transition for the investigated triblock copolymer was proposed.

关键词： Block copolymer Self-assembly Polysiloxane Morphology transition

转变中的欧盟对华经济外交——从“以商促变”到“负责任共存”

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国际展望 2022年第5期14卷 83-103,164,165页

作者：赵柯毕阳中共中央党校(国家行政学院)国际战略研究院俄罗斯与欧洲研究所北京100091 外交学院北京100037

欧盟对华经济外交已发生重大转变,正在从“以商促变”的旧框架进入“负责任共存”的新框架。欧盟认为,“以商促变”的旧框架导致中欧经济利益分配失衡,欧盟作为相对收益较少的一方既无法有效保障自身的经济安全,又无法推动中国按照西方... 详细信息

欧盟对华经济外交已发生重大转变,正在从“以商促变”的旧框架进入“负责任共存”的新框架。欧盟认为,“以商促变”的旧框架导致中欧经济利益分配失衡,欧盟作为相对收益较少的一方既无法有效保障自身的经济安全,又无法推动中国按照西方意愿进行变革。因此,欧盟推出“负责任共存”新框架,旨在通过重塑多元化、本地化的经贸网络,推出更具针对性的贸易投资工具,以及加强西方国家的对外经济政策协调,应对中国的所谓“系统性竞争”。新框架具有浓厚的价值观色彩,对抗性明显加强,但其不寻求改变中国,不愿对华经济脱钩,在给中欧关系调整带来挑战的同时也提供了发展机遇和合作空间。“负责任共存”的新框架是被动防御型的,其有效性不仅取决于欧盟的政策执行力度,在很大程度上也取决于中国的对欧政策,中国应对的关键在于持续扩大中欧在双边和全球层面的共同利益,“锁定”中欧关系的“战略性”。因此,我们既要坚持中欧经贸合作,又要推动中欧绿色发展战略的对接,并扩展全球经济治理层面的合作。

关键词：欧盟经济外交中欧关系以商促变负责任共存

正弦及谐波激励下铁磁材料损耗模型的改进和验证

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中国电机工程学报 2022年第9期42卷 3452-3459页

作者：赵志刚毕紫莉省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学) 天津市红桥区300132 河北省电磁场与电器可靠性重点实验室(河北工业大学) 天津市红桥区300132

通过搭建爱泼斯坦方圈磁特性测量系统,首先对铁磁材料在宽频率范围内的正弦磁损耗进行实验研究,综合考虑材料动态损耗的特性,在经典损耗分离模型的基础上提出动态损耗系数,建立改进的正弦磁损耗模型并进行实验验证。在此基础上,为了解... 详细信息

通过搭建爱泼斯坦方圈磁特性测量系统,首先对铁磁材料在宽频率范围内的正弦磁损耗进行实验研究,综合考虑材料动态损耗的特性,在经典损耗分离模型的基础上提出动态损耗系数,建立改进的正弦磁损耗模型并进行实验验证。在此基础上,为了解决铁磁材料在谐波激励工况下磁损耗的建模方法问题,综合考虑磁通密度波形畸变后的特征,将谐波磁通密度波形分解为主磁通和局部反转磁通,并进行正弦化近似处理,之后结合外推磁滞损耗法、经典涡流损耗公式以及上述动态损耗系数,建立谐波激励下铁磁材料的损耗计算模型。最后对谐波激励下实验数据和计算数据进行对比分析,结果表明,引入动态损耗系数的损耗计算模型在任意谐波激励下均可获得较高的预测精度,从而验证所提损耗模型的有效性和可行性。

关键词：经典损耗分离模型谐波激励磁通密度波形正弦化近似处理动态损耗系数

Effect of Anthracene on the Interaction Between Platymonas helgolandica var. tsingtaoensis and Heterosigma akashiwo in Laboratory Cultures

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Journal of Ocean University of China 2015年第1期14卷 105-113页

作者： bi Rong WANG You WANG Renjun LI Wei TANG Xuexi Laboratory of Ecology College of Marine Life Sciences Ocean University of China

Two species of marine phytoplankton, Platymonas helgolandica var. tsingtaoensis and Heterosigma akashiwo, were cultivated in bi-algal cultures to investigate the effect of anthracene(ANT) on the interaction between them. Without ANT, H. akashiwo out-competed P. helgolandica at low initial biomass ratios(P. helgolandica(P): H. akashiwo(H) = 1:4 and 1:1), but not at the highest(P:H = 4:1). This observation was consistent with the description in Lotka-Volterra two species competition model. It was found that P. helgolandica was excluded at low initial biomass ratios, while the unstable equilibrium between two species was predicted at the highest. For both species, carrying capacity and maximal specific growth rate decreased in bi-algal cultures compared to those in monocultures. H. akashiwo exhibited a higher sensitivity to ANT than P. helgolandica. This resulted markedly in a reduced cell density of H. akashiwo but an increased cell density of P. helgolandica. Carrying capacity of P. helgolandica was consistently higher in bi-algal cultures with ANT than those without ANT, suggesting that ANT, through the elimination of H. akashiwo, generated the dominance of P. helgolandica independently of initial biomass ratios. This study showed a density-dependent effect of harmful alga(H. akashiwo) on dietary alga(P. helgolandica), and indicated that ocean pollutant ANT could induce the succession of marine phytoplankton.

关键词：相互作用 VAR 实验室培养扁藻赤潮异弯藻海洋浮游植物物种竞争藻类培养

Catalytic Oxidation of Hexanol to Hexanal with H_2O_2 Over P-W Heteropoly Compounds

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Chemical Research in Chinese Universities 2001年第3期17卷 293-298页

作者： ZHOU Guang-dong GUO Xiao-hong LIU Yan bi Ying-li ZHEN Kai-ji Department of Chemistry Jilin UniversityChangchun 130023P.R.China

The syntheses of Keggin and Dawson-structural phospho-tungsto heteropoly compounds and their Peroxo-derivatives(PCWP), and the catalytic performance over this series of catalysts for the selective oxidation of hexanol to hexylaldehyde are reported. By means of IR, NMR and UV-DRS techniques the catalysts were characterized and a comparison of the structural properties of these catalysts before and after the reaction was made. The correlation between the catalytic performance and the structure of this series of catalysts was discussed as well.

关键词： P-W Heteropoly compound Hexanol Hexanal

Isolation and Characterization of an Antimicrobial Polypeptide from Loach

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Chinese Chemical Letters 2003年第1期14卷 54-57页

作者： Xian Zhi DONG Hui bi XU Kai Xun HUANG qiong LIU Department of Chemistry Huazhong University of Science and TechnologyWuhan 430074

A novel antimicrobial polypeptide was isolated and characterized from loach, Misgurnus anguillicaudatus. The polypeptide, named MAPP, is a single-chain polypeptide with Mw about 9,800 Dalton and pI about 4.78; the N-tag of MAPP was CFGWN. MAPP showed good inhibition against various bacteria including Bacillus subtilis, Escherichia coli and Staphylococcus aureus. MAPP could be used as a lead compound in antibiotics drug discovery.

关键词： Misgurnus anguillicaudatus isolation characterization.

Synthesis and biological evaluation of 12-N-p-chlorobenzyl sophoridinol derivatives as a novel family of anticancer agents

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Acta Pharmaceutica Sinica B 2016年第3期6卷 222-228页

作者： Chongwen bi Cheng Ye Yinghong Li Wuli Zhao Rongguang Shao Danqing Song Institute of Medicinal biotechnology Chinese Academy of Medical Science & Peking Union Medical College Tianjin Medical University General Hospital

Taking 12-N-p-chlorobenzyl sophoridinol 2 as a lead, a series of novel sophoridinic derivatives with various 30-substituents at the 11–side chain were synthesized and evaluated for their anticancer activity from sophoridine(1), a natural antitumor medicine. Among them, the sophoridinic ketones 5a–b, alkenes 7a–b and sophoridinic amines 14a–b displayed reasonable antiproliferative activity with IC50 values ranging from 3.8 to 5.4 μmol/L. Especially, compounds 5a and 7b exhibited an equipotency in both adriamycin(AMD)-susceptible and resistant MCF-7 breast carcinoma cells,indicating a different mechanism from AMD. The primary mechanism of action of 5a was to arrest the cell cycle at the G0/G1 phase, consistent with that of parent compound 1. Thus, we consider 12-chlorobenzyl sophoridinic derivatives with a tricyclic scaffold to be a new class of promising antitumor agents with an advantage of inhibiting drug-resistant cancer cells.

关键词： Sophoridinic derivatives Synthesis Structure–activity relationship Anticancer Drug resistance

A Novel Multiuser Detection Algorithm for CDMA-Based MIMO-OFDM System

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The Journal of China Universities of Posts and Telecommunications 2006年第2期13卷 90-94页

作者： LIU Jun-shi TANG bi-hua WANG Ya-chen LIU Yuan-an School of Telecommunications Engineering Beijing University of Posts and Telecommunications Beijing 100876 P.R. China School of Electronic and Engineering Beijing University of Posts and Telecommunications Beijing 100876 P. R. China

This paper investigates QR matrix decomposition based successive interference cancellation multiuser detection algorithms in synchronous uplink for code division multiple access based multiple input multiple output orthogonal frequency division multiplexing ,system. The Symbol Error Rate＇（SER） performance of the optimal order and the suboptimal order QR-SIC MUD algorithms are compared with conventional zero forcing and minimum mean ,square error multiuser detection algorithms by Monte Carlo .simulations. Complexity analysis is presented at the end of the paper. Both our .simulation results and complexity analysis show that SER performance of QR-Successive Interference Cancellation （QR-SIC） algorithms is superior to those of zero forcing （ZF） and minimum mean .square error algorithms, and the ,suboptimal order Q-R-SIC algorithm hos a good trade-off between SER performance and computation complexity.

关键词： QR-SIC MUD CDMA MIMO OFDM

生态人格养成:返乡农民工绿色创业责任培育的价值落点

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中州学刊 2023年第4期 87-92页

作者：毕雪燕华北水利水电大学人文艺术教育中心河南郑州450018

生态人格作为一般人格的特殊形式,是指个体人格的生态规定性,主要包括生态知识、生态理念和生态实践等。在生态文明建设中,返乡农民工的生态人格对其创业行为有着显著影响,是支撑返乡农民工克服创业项目局限、走绿色创业之路的重要力量... 详细信息

生态人格作为一般人格的特殊形式,是指个体人格的生态规定性,主要包括生态知识、生态理念和生态实践等。在生态文明建设中,返乡农民工的生态人格对其创业行为有着显著影响,是支撑返乡农民工克服创业项目局限、走绿色创业之路的重要力量。当前,返乡创业农民工的生态人格还存在一定的缺陷,主要表现为生态认知不高、生态情感失衡、生态素养不健全以及生态行为践履不足等问题。在推进乡村振兴过程中,要实现经济效益、社会效益与生态效益的统一,亟须以尊重生态规律为前提,培育和塑造生态人格,重建人与自然的和谐关系。为此,需要从正确认识和处理好自然观与社会观的关系、科学精神与人文精神的关系、法律他律与道德自律的关系、生态意识与生态行为的关系等入手,在价值层面培育返乡农民工绿色创业责任,帮助其生态人格养成。

关键词：生态人格返乡农民工绿色创业责任价值落点