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The control of syndepositional faulting on the eogene sedimentary basin fills of the Dongying and Zhanhua sags, Bohai Bay Basin

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science China earth sciences 2004年第9期47卷 769-782页

作者： LIN Changsong1, ZHeNG Herong2, ReN Jianye1, LIU Jingyan1 & Qiu Yigang1 1. Department of energy Geology, China University of Geosciences, Beijing 100083, China 2. Petroleum exploration and Production Institute, sino-Petroleum and Chemistry Cooperation, Beijing 100083, China Department of energy Geology China University of Geosciences Beijing China Petroleum exploration and Production Institute Sino-Petroleum and Chemistry Cooperation Beijing China

The Dongying and Zhanhua sags are the major hydrocarbon exploration and produc- tion subbasins in the Bohai Bay Basin. Integrated analysis of the sedimentary basin fills has shown that the syndepositional faults and their arrangement styles exerted an important influ- ence on the development and distribution of the eogene depositional systems. The sedimentary filling evolution of the subbasins reflects the general control of the episodic rifting process. The major long-term active normal faults formed a series of paleogeomorphic accident or slopebreak zones that commonly delineated the subsidiary palaeostructural units and the depositional facies tracts and constrained the general distribution of sedimentary facies zones. The central sag boundary fault slopebreak zones usually determined the distribution of the depocenters of ter- restrial clastic depositional systems, particularly the lowstand fans or deltaic depositional sys- tems, and have proven to be the economically important targets for the exploration of subtle sandstone reservoirs. A variety of syndepositional fault arrangement patterns, including the par- allel, en echelon, combo-like, broom-like fault systems and the fault overlap or transfer zones, have been recognized in the subbasins. They generated distinctive geomorphic features and exerted a direct influence on sediment dispersal and sandbody distribution during the eogene synrift stage. It is the key for the prediction of depositional systems tracts and reservoir sand- stones to investigate the activity and distribution of the fault slopebreak zones and reconstruct the structural paleogeomorphy in different basin filling stages of the basin evolution.

关键词： episodic rifting, fault slopebreak zone, depositional pattern, Bohai Bay Basin.

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Mixed-layer water oscillations in tropical Pacific for eNsO cycle

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science China earth sciences 2007年第12期50卷 1892-1908页

作者： ZHAO YongPing1,CHeN YongLi1,WANG Fan1 & WU AiMing2 1 Institute of Oceanology,Chinese Academy of sciences,Qingdao 266071,China 2 Department of earth & Ocean sciences,University of British Columbia,Vancouver,BC,V6T 1Z4,Canada Institute of Oceanology Chinese Academy of Sciences Qingdao China Department of earth & Ocean sciences University of British Columbia Vancouver Canada

The main modes of interannal variabilities of thermocline and sea surface wind stress in the tropical Pacific and their interactions are investigated,which show the following results.(1) The thermocline anomalies in the tropical Pacific have a zonal dipole pattern with 160°W as its axis and a meridional seesaw pattern with 6-8°N as its transverse *** meridional oscillation has a phase lag of about 90° to the zonal oscillation,both oscillations get together to form the el Ni?o/La Ni?a cycle,which be-haves as a mixed layer water oscillates anticlockwise within the tropical Pacific basin between equator and 12°N.(2) There are two main patterns of wind stress anomalies in the tropical Pacific,of which the first component caused by trade wind anomaly is characterized by the zonal wind stress anomalies and its corresponding divergences field in the equatorial Pacific,and the abnormal cross-equatorial flow wind stress and its corresponding divergence field,which has a sign opposite to that of the equatorial region,in the off-equator of the tropical North Pacific,and the second component represents the wind stress anomalies and corresponding divergences caused by the ITCZ anomaly.(3) The trade winds anomaly plays a decisive role in the strength and phase transition of the eNsO cycle,which results in the sea level tilting,provides an initial potential energy to the mixed layer water oscillation,and causes the opposite thermocline displacement between the west side and east side of the equator and also between the equator and 12°N of the North Pacific basin,therefore determines the amplitude and route for eNsO *** ITCZ anomaly has some effects on the phase transition.(4) The thermal anomaly of the tropical western Pacific causes the wind stress anomaly and extends eastward along the equator accompanied with the mixed layer water oscillation in the equatorial Pacific,which causes the trade winds anomaly and produces the anomalous wind stress and the corresponding di

关键词： tropical Pacific, thermocline and sea surface wind stress anomaly, eNsO cycle, mixed layer water oscillation

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LOCAL sPeCTRA OF UNILATeRAL OPeRATOR WeIGHTeD sHIFTs

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Chinese Annals of Mathematics,series B 2004年第3期25卷 369-382页

作者： A.BOURHIM DepartmentofMathematicsandstatistics FacultyofSciencesLavalUniversityPavillonAlexandre-VachonQuebecG1K7P4Canada

In this note, the local spectral properties of unilateral operator weighted shifts are studied.

关键词： Operator weighted shifts Local spectrum single-valued extension property Dunford's condition(C) Bishop's property (β)

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Tunable sum Frequency Mixing of a Ti∶sapphire Laser and a Nd∶YAG Laser

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Chinese Journal of Lasers 2001年第6期10卷 8-11页

作者： DING Xin 1 YAO Jianquan 2 YU Yizhong 2 YU Xuanyi 1 XU Jingjun 1 ZHANG Guangyin 1 ( 1Optoelectronic Information science and Technology Lab, Photonic Center, Nankai University, Tianjin 300071, China 2Optoelectronic Information scie 南开大学物理系光子学中心教育部光电信息技术科学重点实验室天津 300071 天津大学激光与光电子所教育部光电信息技术科学重点实验室天津 300072

In this paper the theoretical and experimental results of sum-frequency mixing of a Ti∶sapphire laser and a 1.064 μm Nd∶YAG laser are presented. By using two KTP crystals cut at θ=76° and 85° (φ=90° in both crystals), respectively, the sum-frequency mixing tuning range from 459.3 to 509.6 nm in one Ti∶sapphire laser setup is experimentally achieved. The maximum output energy was 14.6 mJ and the energy conversion efficiency was up to 15.2%.

关键词： Ti∶sapphire laser sum frequency mixing phase-matching condition KTP crystal

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special Column on Recent Advances in PCMs as Thermal energy storage in energy systems

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Journal of Thermal science 2024年第2期33卷 395-395页

作者： Mohammad Hossein AHMADI Tingzhen MING Marc A.ROseN s.A.sHeRIF Mohammad Mehdi RAsHIDI shahrood University of Technology Iran Wuhan University of Technology China University of Ontario Institute of Technology Canada University of Florida USA University of electronic science and Technology of China China

Thermal energy storage technology has the advantages of high energy storage density,small size,and high energy conversion *** is one of the key energy storage technologies and an important way to achieve carbon peaking and carbon neutrality *** change materials (PCMs) offer this opportunity to store high amount of energy and release it in the form of latent heat when needed,and therefore have the advantage of being capable to alleviate the intrinsic intermittency of renewable power production,especially in wind and solar farms.

关键词： efficiency store latent

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“城市矿产”资源产生及其供给潜力:以金属铌为例

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中国科学：地球科学 2024年第8期54卷 2625-2632页

作者：曾现来 Moisés GÓMeZ Mahmoud BAKRY 耿涌李金惠清华大学环境学院北京100084 上海交通大学环境科学与工程学院上海200240 上海交通大学国际与公共事务学院上海200030

“碳中和”战略正在重塑全球资源流动和循环利用的格局,迅速增长的“城市矿产”(也称为二次资源)作为地质矿产的延伸,在资源供给和平衡方面发挥着越来越重要的作用.铌是一种关键金属,但目前缺乏对其可持续性的研究.循环利用的基本原则... 详细信息

“碳中和”战略正在重塑全球资源流动和循环利用的格局,迅速增长的“城市矿产”(也称为二次资源)作为地质矿产的延伸,在资源供给和平衡方面发挥着越来越重要的作用.铌是一种关键金属,但目前缺乏对其可持续性的研究.循环利用的基本原则是尽可能的在其全生命周期过程中高效利用该金属,对此,我们评估了含铌材料在报废过程中的损耗,揭示了最大限度减少此类损耗的必要性,阐明了全生命周期中含“城市矿产”和合金的利用过程.根据对大多数铌应用产生的“城市矿产”预测,如果不进行回收利用,到2090年可能会损失16.8万吨.相反,如果金属铌的回收利用率增至90%,预计其损失将减少到1.6万吨.因此,需要探索各种措施,以实现从线性经济到循环经济的无缝过渡,促进铌资源的可持续利用.

关键词：铌 “城市矿产” 循环经济回收利用可持续性

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A Note on Pad Approximants Pairs as Limits of Algebraic Polynomials Pairs of Weighted Best Approximation in Orlicz spaces

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Analysis in Theory and Applications 2015年第3期31卷 253-259页

作者： F.e.Levis Departamento de Matemtica Universidad Nacional de Río Cuarto

In this short note, we show the behavior in Orlicz spaces of best approximations by algebraic polynomials pairs on union of neighborhoods, when the measure of them tends to zero.

关键词： Best approximation pair Pad′e approximant pair Orlicz spaces.

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Regions of Applicability of Aubry-Mather Theory for Non-convex Hamiltonian

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Chinese Annals of Mathematics,series B 2011年第4期32卷 605-614页

作者： Min ZHOU Binggui ZHONG Department of Mathematics Nanjing University Nanjing 210093 China.

Herman constructed an autonomous system of two degrees of freedom which says that in non-convex situations, oscillations do happen and Aubry-Mather Theory cannot apply (see the results due to W. F. Chen in 1992). In this paper, it is shown that although the orbits could visit a region far away from the initial point in phase space, they can only exist in some fixed regions in I = (I1 , I2 ) plane. Moreover, Aubry-Mather Theory can be applied outside the regions.

关键词： Twist map Aubry-Mather Theory Non-convex Hamiltonian

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Loss of mismatch repair signaling impairs the WNT–bone morphogenetic protein crosstalk and the colonic homeostasis

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Journal of Molecular Cell Biology 2020年第6期12卷 410-423页

作者： Katrine Nørgaard Carolin Müller Nadja Christensen María L.Chiloeches Cesilie L.Madsen sabine s.Nielsen Tine e.Thingholm Antoaneta Belcheva Department of Biochemistry and Molecular Biology University of Southern DenmarkCampusvej 555230 Odense MDenmark Department of Molecular Medicine University of Southern DenmarkJ.B.Winsløws Vej 255230 Odense MDenmark

The fine balance between proliferation,differentiation,and apoptosis in the colonic epithelium is tightly controlled by the interplay between WNT,Notch,and bone morphogenetic protein(BMP)*** these complex networks coordinate the colonic homeostasis,especially if cancer predisposing mutations such as mutations in the DNA mismatch repair(MMR)are present,is *** of the MMR system has long been linked to colorectal cancer;however,little is known about its role in the regulation of the colonic *** has been shown that loss of MMR promotes the proliferation of colon epithelial cells that renders them highly susceptible to *** mechanism through which MMR mediates this effect,yet,remains to be *** an MMR-deficient mouse model,we show that increased methylation of Dickkopf1 impacts its expression,and consequently,the ability to negatively regulate WNT *** a result,excessive levels of activeβ-catenin promote strong crypt progenitor-like phenotype and abnormal *** these settings,the development and function of the goblet cells are ***-deficient mice have fewer goblet cells with enlarged mucin-loaded *** further show that MMR inactivation impacts the WNT–BMP signaling crosstalk.

关键词： MMR colonic epithelium WNT BMP crypt homeostasis

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Cloning, expression and Identification of a New Trehalose synthase Gene from Thermobifida fusca Genome

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Acta Biochimica et Biophysica sinica 2004年第7期36卷 477-484页

作者： Yu-Tuo WeI, Qi-Xia ZHU1, Zhao-Fei LUO1, Fu-shen LU1, Fa-Zhong CHeN1, Qing-Yan WANG1, Kun HUANG,Jian-Zhong MeNG, Rong WANG, and Ri-Bo HUANG*Guangxi Key Laboratory of subtropical Bioresource Conservation and Utilization, Guangxi University, Nanning 530004, China 1sinozyme Biotech Co. Ltd., Nanning 530004, China Guangxi Key Laboratory of subtropical Bioresource Conservation and Utilization Guangxi University Nanning 530004 China

A new open reading frame in Thermobifida fusca sequenced genome was identified to encode a new trehalose synthase, annotated as “glycosidase” in the GenBank database, by bioinformatics searching and experimental validation. The gene had a length of 1830 bp with about 65% GC content and encoded for a new trehalose synthase with 610 amino acids and deduced molecular weight of 66 kD. The high GC content seemed not to affect its good expression in e. coli BL21 in which the target protein could account for as high as 15% of the total cell proteins. The recombinant enzyme showed its optimal activities at 25 °C and pH 6.5 when it converted substrate maltose into trehalose. However it would divert a high proportion of its substrate into glucose when the temperature was increased to 37 °C, or when the enzyme concentration was high Its activity was not inhibited by 5 mM heavy metals such as Cu2+, Mn2+, and Zn2+ but affected by high concentration of glucose. Blasting against the database indicated that amino acid sequence of this protein had maximal 69% homology with the known trehalose synthases, and two highly conserved segments of the protein sequence were identified and their possible linkage with functions was discussed.

关键词： trehalose synthase Thermobifida fusca open reading frame (ORF) gene expression

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