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Particuology 2014年第4期12卷 71-76页

作者： qisheng liu Cuncheng Li Kejian Jiang Yanlin Song Jian Pei Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong(University of Jinan) School of Chemistry and Chemical EngineeringUniversity of Jinan Beijing National Laboratory for Molecular Sciences(BNLMS) Key Laboratory of Organic SolidsLaboratory of New MaterialsInstitute of ChemistryChinese Academy of Sciences Beijing National Laboratory for Molecular Sciences(BNLMS) The Key Lab of Bioorganic Chemistry and Molecular Engineering College of ChemistryPeking University

Poly（3-hexylthiophene）（PBHT） was used in a solid-state dye-sensitized solar cell （S-DSC） with a broad- absorption metal-free organic dye sensitizer 1,2,4,5-benzenetetracarboxylic acid （BzTCA）. Under full- sunlight irradiation （AM 1.5 G, 100 mW/cm2 ）, an overall conversion efficiency of 3.21% was achieved, which represents one of the highest efficiencies reported in an S-DSC. Our results indicate that the P3HT polymer is a promising material as both a hole conductor and an assistant sensitizer in the fabrication of solid-state DSCs.

关键词： Solid-state dye-sensitized solar cellPoly(B-hexylthiophene)Conversion efficiency

Anion-cation dual doping: An effective electronic modulation strategy of Ni2P for high-performance oxygen evolution

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Journal of Energy Chemistry 2020年第9期29卷 116-121,I0004页

作者： Bo Xu Xiaodong Yang Qiang Fang Linbing Du Yan Fu Yiqiang Sun qisheng liu Qingquan Lin Cuncheng Li School of Chemistry and Chemical Engineering University of JinanJinan 250022ShandongChina Institute of Applied Catalysis College of Chemistry and Chemical EngineeringYantai UniversityYantai 264005ShandongChina

Developing of high-performance and low-cost electrocatalysts is of great significance to reduce the overpotential and accelerated the reaction rate of oxygen evolution in water splitting and related energy conversion ***,Fe,O-dual doped Ni2P(Fe,O-Ni2P)nanoarray is successfully synthesized on carbon cloth demonstrating enhanced electrocatalytic activity and stability for oxygen evolution reaction(OER)under alkaline *** as-synthesized Fe,O-Ni2P nanoarray exhibits obviously improved OER performance with a low overpotential of 210 mV at 10 mA cm^-2 current density and a Tafel slope of48 mV dec^-1,as well as long-term *** strong coupling interaction induced changes in electronic structure lead to relatively higher oxidation state and stronger oxidation ability of the Fe,O-Ni2P nanoarray,together with the high electrochemical surface area and good conductivity contribute to the superior OER *** work highlights the anion-cation dual doping strategy may be an effective method for fabrication of catalysts relating to energy conversion applications.

关键词： Oxygen evolution reaction Ni2P based electrocatalyst Anion-cation dual doping

Late Jurassic-Early Cretaceous Plutonism in the Northern Part of the Precambrian North China Craton:SHRIMP Zircon U-Pb Dating of Diorites and Granites from the Yunmengshan Geopark,Beijing

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Acta Geologica Sinica(English Edition) 2009年第2期83卷 310-320页

作者： SHI Yuruo ZHAO Xitao MA Yinsheng HU Daogong liu qisheng WU Zhenhan ZHAO Yuanyi liu Dunyi Beijing SHRIMP Center Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 China Institute of Mineral Resources Chinese Academy of Geological Sciences Beijing 100037 China

The Yunmengshan Geopark in northern Beijing is located within the Yanshan range. It contains the Yunmengshan batholith, which is dominated by two plutons： the Yunmengshan gneissic granite and the Shicheng gneissic diorite. Four samples of the Yunmengshan gneissic granite give SHRIMP zircon U-Pb ages from 145 to 141 Ma, whereas four samples of the Shicheng gneissic diorite have ages from 159 Ma to 151 Ma. Dikes that cut the Yunmengshan diorite record SHRIMP zircon U-Pb age of 162±2 and 156±4 Ma. The cumulative plots of zircons from the diorites show a peak age of 155 Ma, without inherited zircon cores, and the peak age of 142 Ma for granite is interpreted as the emplacement age of the Yunmengshan granitic pluton, whose igneous zircons contain inherited zircon cores. The data presented here show that there were two pulses of magmatism： early diorites, followed c13 Ma later by true granites, which incorporated material from an older continental crust.

关键词： SHRIMP zircon U-Pb age Yunmengshan Geopark North China Craton

Miocene Tectonic Evolution from Dextral-Slip Thrusting to Extension in the Nyainqentanglha Region of the Tibetan Plateau

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Acta Geologica Sinica(English Edition) 2007年第3期81卷 365-384页

作者： WU Zhenhan Patrick J. BAROSH ZHAO Xun WU Zhonghai HU Daogong liu qisheng Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 China P. J. Barosh 103 Aaron Avenue Bristol RI 02809 USA Chinese Academy of Geological Sciences Beijing 100037 China

Dextral-slip in the Nyainqentanglha region of Tibet resulted in oblique underthrusting and granite generation in the Early to Middle Miocene, but by the end of the epoch uplift and extensional faulting dominated. The east-west dextral-slip Gangdise fault system merges eastward into the northeast-trending, southeast-dipping Nyainqentanglha thrust system that swings eastward farther north into the dextral-slip North Damxung shear zone and Jiali faults. These faults were took shape by the Early Miocene, and the large Nyainqentanglha granitic batholith formed along the thrust system in 18.3-11.0 Ma as the western block drove under the eastern one. The dextral-slip movement ended at -11 Ma and the batholith rose, as marked by gravitational shearing at 8.6-8.3 Ma, and a new fault system developed. Northwest-trending dextral-slip faults formed to the northwest of the raisen batholith, whereas the northeast-trending South Damxung thrust faults with some sinistral-slip formed to the southeast. The latter are replaced farther to the east by the west-northwest-trending Lhtinzhub thrust faults with dextral-slip. This relatively local uplift that left adjacent Eocene and Miocene deposits preserved was followed by a regional uplift and the initiation of a system of generally north-south grabens in the Late Miocene at -6.5 Ma. The regional uplift of the southern Tibetan Plateau thus appears to have occurred between 8.3 Ma and 6.5 Ma. The Gulu, DamxungYangbajain and Angan graben systems that pass east of the Nyainqentanglha Mountains are locally controlled by the earlier northeast-trending faults. These grabens dominate the subsequent tectonic movement and are still very active as northwest-trending dextral-slip faults northwest of the mountains. The Miocene is a time of great tectonic change that ushered in the modern tectonic regime.

关键词： Miocene tectonics strike-slip fault thrust fault extensional tectonic system uplift graniteplutonism Nyainqentanglha region Tibetan Plateau

A versatile cooperative template-directed coating method to synthesize hollow and yolk-shell mesoporous zirconium titanium oxide nanospheres as catalytic reactors

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Nano Research 2014年第2期7卷 246-262页

作者： Buyuan Guan Tao Wang Shangjing Zeng Xue Wang Dong An Dongmei Wang Yu Cao Dingxuan Ma Yunling liu qisheng Huo State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry 2ilin University Changchun China

The design of hollow mesoporous nanostructures for cascade catalytic reactions can inject new vitality into the development of nanostructures. In this study, we report a versatile cooperative template-directed coating method for the synthesis of hollow and yolk-shell mesoporous zirconium titanium oxide nanospheres with varying compositions （ZrO2 content from 0 to 100%）, high surface areas （465 m2·g-1） and uniform mesopores. In particular, the hexadecylamine （HDA） used in the coating procedure serves as a soft template for silica@mesostructured metal oxide core-shell nanosphere formation. By a facile solvothermal treatment route with an ammonia solution and calcination in air, the silica@mesostructured zirconium titanium oxide spheres can be converted into highly uniform hollow zirconium titanium oxide spheres. By simply replacing hard template silica nanospheres with core-shell silica nanocomposites, the synthesis approach can be further used to prepare yolk-shell mesoporous structures through the coating and etching process. The approach is similar to the preparation of mesoporous silica nanocomposites from the self-assembly of the core, the soft template cetyltrimethylammonium bromide （CTAB） and a silica precursor and can be extended as a general method to coat mesoporous zirconium titanium oxide on other commonly used hard templates （e.g., mesoporous silica spheres, mesoporous organosilica ellipsoids, polymer spheres, and carbon nanospheres）. The presence of highly permeable mesoporous channels in the zirconium titanium oxide shells has been demonstrated by the reduction of 4-nitrophenol with yolk-shell Au@mesoporous zirconium titanium oxide as the catalyst. Moreover, a cascade catalytic reaction including an acid catalyzed step and a catalytic hydrogenation to afford benzimidazole derivatives can be carried out very effectively by using the accessible acidity of the yolk-shell structured mesoporous zirconium titanium oxide spheres containing a Pd core as a bifun

关键词： hollow structure yolk-shell structure mesoporous zirconiumtitanium oxide self-assembly multiple catalyst

Overexpression of Dickkopf-3 induces apoptosis through mitochondrial pathway in human colon cancer

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World Journal of Gastroenterology 2012年第14期18卷 1590-1601页

作者： Zi-Rong Yang Wei-Guo Dong Xiao-Fei Lei Meng liu qisheng liu Department of Gastroenterology Renmin Hospital of Wuhan UniversityWuhan 430060Hubei ProvinceChina

AIM:To investigate the mechanisms of the biological roles of Dickkopf-3(Dkk-3) in cell invasion,survival and apoptosis in colon cancer ***:Three human colon cancer cell lines,i.e.,HT-29,LoVo and SW480,were *** of Dkk-3 induced by pEGFP-N1-Dkk-3-GFP plasmid in LoVo cells was performed using Lipofectamine 2000 *** transcription polymerase chain reaction and Western blotting were performed to determine the mRNA and protein expression levels of Dkk-3,*** proliferation assay,cell cycle analysis,hoechst 33258 assay and Matrigel invasion assay were performed on Dkk-3 overexpressing ***:The mRNA and protein expressions of Dkk-3 in HT-29(mRNA:0.06 ± 0.02,protein:0.06 ± 0.01) and LoVo(mRNA:0.07 ± 0.02,protein:0.07 ± 0.02) cells were significantly lower than that in SW480 cells(mRNA:0.92 ± 0.04,protein:0.69 ± 0.13;all P < 0.05),and the greatest levels of invasiveness wasin LoVo ***-3 overexpression inhibited the proliferation and invasion of LoVo cells and induced cell cycle arrest at G0/G1 phase and subsequent apoptosis,as indicated by increased chromatin condensation and fragments,upregulated Bax and cytochrome c protein,downregulated survivin and Bcl-2 protein,and the activation of caspase-3 and ***,Dkk-3 overexpression reduced the accumulation of cytosolic fraction of β-***:Dkk-3 overexpression induced apoptosis in human colon cancer possibly through the mitochondrial ***-3 may be involved in the Wnt/β-catenin signaling pathways in colon cancer.

关键词： Dickkopf-3 Overexpression Invasion Apotosis Colon cancer Mitochondria

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虚拟内存技术在策略表刷新机制中的应用

高电压技术 2006年第1期32卷 102-104页

作者：龚瑛熊洁刘启胜武汉大学电气工程学院武汉430072 河南省信阳市电力设计院信阳464000

鉴于暂态稳定控制系统中单处理器模式下有限的内存量很难满足在内存中实时查询理论上无限增大的准实时策略表库的要求,结合虚拟内存技术,根据电力系统运行方式变化的实际情况,通过特殊的选择机制动态调整内存策略表库中所存放的准实时... 详细信息

鉴于暂态稳定控制系统中单处理器模式下有限的内存量很难满足在内存中实时查询理论上无限增大的准实时策略表库的要求,结合虚拟内存技术,根据电力系统运行方式变化的实际情况,通过特殊的选择机制动态调整内存策略表库中所存放的准实时策略表,保证电力系统异常发生时需查询的相应运行方式下的策略表已存储于内存中。静态试验证明了策略表调度机制的快速性与准确性。

关键词：暂态稳定控制系统虚拟内存技术准实时策略表

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煤层底板隐伏断层分类及突水防治措施

煤田地质与勘探 2020年第2期48卷 141-146页

作者：刘泽威刘其声刘洋煤炭科学研究总院北京100013 中煤科工集团西安研究院有限公司陕西西安710077 陕西省煤矿水害防治技术重点实验室陕西西安710077

矿井底板突水系数介于0.06~0.1 MPa/m区域内发育的隐伏断层,是煤矿生产过程中发生突水的关键因素之一,对其进行科学分类有利于制定底板突水防治针对性措施。通过煤层底板隐伏断层特征分析,根据隐伏断层顶界面位置与"下三带"垂向关系,从... 详细信息

矿井底板突水系数介于0.06~0.1 MPa/m区域内发育的隐伏断层,是煤矿生产过程中发生突水的关键因素之一,对其进行科学分类有利于制定底板突水防治针对性措施。通过煤层底板隐伏断层特征分析,根据隐伏断层顶界面位置与"下三带"垂向关系,从底板水害防治角度,将煤层底板隐伏断层分为高位、中位及低位3种类型。借助理论与突水案例分析手段,指出存在突水威胁的高位隐伏断层具有全贯通、突发性、水量大及危害程度高等特点;中位隐伏断层具有突水时间难以判断、突水后难以治理的特点。针对高位隐伏断层,提出工作面回采前对煤层底板进行注浆加固等防治措施;针对低位隐伏断层,提出在突水灾害前后采取不同思路的注浆治理措施。研究成果对于煤矿企业应对隐伏断层引起的底板突水灾害提供了重要参考。

关键词：断层分类高位隐伏断层中位隐伏断层下三带突水

Late Cenozoic Normal Faulting on the Western Side of Wenquan Graben, Central Qianghai-Xizang(Tibet) Plateau

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Earthquake Research in China 2005年第2期19卷 152-169页

作者： Wu Zhonghai Ye Peisheng liu qisheng Wu Zhenhan Hu Daogong Zhao Xitao Zhou Chunjing Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China

A near NS-strike east-dipping normal fault is developed on the western side of Wenquan graben in the central Qinghal-Xizang（Tibet） Plateau. It is the western marginal fault of the graben and has been intensely active. It is a product of the near EW extension and deformation of the central northern Qinghal-Xizang（Tibet） Plateau since the late Cenozoic under the effect of the collision of the India and Eurasia plates. Since the late Cenozoic, the maximum vertical displacement on the fault was greater than 2. ! km, and the dislocated Mesozoic fold stratum reveals a maximum accumulative throw of 6.0 ± 2.2km. Quaternary faulting took place many times along the fault, creating multi-set piedmont fault facets and multi-level fault *** to the height of fault scarps that result from the vertical offset of the late Quaternary strata and geomorphic provinces, the maximum slip rate of the fault is estimated to have been less than 1.2mm/a since the late Quaternary, averaging 0.45mm/a. The trenching across the fault reveals that at least 3 paleoearthquakes of varied magnitudes have occurred since the late Epipleistocene. In view of the characteristics of Cenozoic faulting, it is concluded that the fault will act as a dominant seismogenic fault for earthquakes of M6.0 to M7.0 that are most likely to occur in the future.

关键词： Wenquan graben East-west extension Normal fault Paleoearthquake Qinghai-Xizang (Tibet) Plateau

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岩石流-固耦合实验研究

煤田地质与勘探 2009年第2期37卷 32-35页

作者：刘其声煤炭科学研究总院西安研究院陕西西安710054

应力与岩石的变形破坏和渗透特性关系密切。实验结果显示,一方面,岩石破坏前后其渗透性达到最大,渗透率变化与岩石性质有关,砂岩的变化服从指数函数关系,泥质砂岩、砂质泥岩或者泥岩服从抛物线型函数关系;另一方面,在大多数情况下,应力... 详细信息

应力与岩石的变形破坏和渗透特性关系密切。实验结果显示,一方面,岩石破坏前后其渗透性达到最大,渗透率变化与岩石性质有关,砂岩的变化服从指数函数关系,泥质砂岩、砂质泥岩或者泥岩服从抛物线型函数关系;另一方面,在大多数情况下,应力变化仅导致岩石微小变形而并未破坏。渗透性随有效应力变化,并且与岩石空隙形状有关,岩石空隙形状包括三重孔隙介质,分别为基质孔隙、裂缝孔隙和管道状孔隙。裂缝性岩心的渗透率和孔隙度损失较孔隙性岩心、毛细管型岩石损失大,渗透率的变化总是大于孔隙度的变化。孔隙岩块的孔隙度和渗透率随有效应力的变化关系符合指数型数学模型,裂缝型岩石宜用幂指数型数学模型描述,毛细管型岩石则用二次抛物线数学模型描述较为恰当。

关键词：流-固耦合岩石破坏三重孔隙介质有效应力渗透率孔隙度