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The dihedral angle and Intersection Processes of a Conjugate Strike-Slip Fault System in the Tarim Basin, NW China

Acta Geologica Sinica(English Edition) 2018年第1期92卷 74-88页

作者： WU Guanghui YUAN Yajuan HUANG Shaoying Thomas Matthew Vandyk XIAO Yang CAI Quan LUO Bingxu Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering School of Marine Sciences Sun Yat-sen University Guangzhou 510006 China PetroChina Tarim Oilfield Company Korla 841000 China Department of Earth Sciences Royal Holloway and Bedford New College University of London Egham Surrey TW20 OEX UK

Recent studies, focused on dihedral angles and intersection processes, have increased understandings of conjugate fault mechanisms. We present new 3-D seismic data and microstructural core analysis in a case study of a large conjugate strike-slip fault system from the intracratonic Tarim Basin, NW China. Within our study area, ＂X＂ type NE and NW trending faults occur within Cambrian- Ordovician carbonates. The dihedral angles of these conjugate faults have narrow ranges, 19~ to 62~ in the Cambrian and 26~ to 51~ in the Ordovician, and their modes are 42~ and 44~ respectively. These data are significantly different from the ~60~ predicted by the Coulomb fracture criterion. It is concluded that：（1） The dihedral angles of the conjugate faults were not controlled by confining pressure, which was low and associated with shallow burial; （2） As dihedral angles were not controlled by pressure they can be used to determine the shortening direction during faulting; （3） Sequential slip may have played an important role in forming conjugate fault intersections; （4） The conjugate fault system of the Tarim basin initiated as rhombic joints; these subsequently developed into sequentially active ＂X＂ type conjugate faults; followed by preferential development of the NW-trending faults; then reactivation of the NE trending faults. This intact rhombic conjugate fault system presents new insights into mechanisms of dihedral angle development, with particular relevance to intracratonic basins.

关键词： Conjugate fault strike-slip dihedral angle fault intersection faulting process Carbonate

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Effect of dihedral angle of bridge unit on the performance of dye-sensitized solar cell

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Chinese Chemical Letters 2016年第6期27卷 927-932页

作者： Yun Wu Xin Li School of Chemical and Environmental Engineering Shanghai Institute of Technology Shanghai 201418 China Division of Theoretical Chemistry and Biology School of Biotechnology KTH Royal Institute of Technology SE-10691 Stockholm Sweden Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

In this work, we investigated the impact of bridge unit on their photo-physical and photovoltaic performance. Increased planarity of the dyes effectively extended the absorption, but reduces the efficiency. Interestingly we found that dyes with a thiophene conjugate unit showed inferior performance when compared with benzene. Theoretical computation indicates a large dihedral angle in the latter system. EIS analysis evidenced the severe recombination in the thiophene-based dye,showing that good planarity may lead to dye aggregation and decrease the efficiency.

关键词： Planarity Recombination dihedral angle Dye-loading Solar cell

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Theoretical Studies on dihedral angle-Bending Isomers of M2Pt2^0/- Clusters

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Chinese Journal of Chemical Physics 2020年第4期33卷 450-458,I0001页

作者： Guo-jin Cao Xiu-dong Jia Institute of Molecular Science Shanxi UniversityTaiyuan 030006China

The structures and electronic properties of the gaseous M2Pt20/-clusters(M represents the alkaline earth metal)were investigated using the density functional theory(B3LYP and PBE0)and wave function theory(SCS-MP2,CCSD and CCSD(T)).The results indicate that the D2 hisomers with the planar structures are more stable than the C2v isomers with smaller dihedral angles and shorter Pt-Pt bond *** mutual competition of M(s,p)-Pt(5d)interaction and Pt-Pt covalent bonding contributes to the different stabilizations of the two kinds of *** M(s,p)-Pt(5d)interaction favors the planar isomers with D2 hsymmetry,while the Pt-Pt covalent bonding leads to the C2 visomers with bending *** different crossing points are determined in the potential energy curves of Be2Pt2 with the singlet and triplet *** there is just one crossing point in potential energy curves of Ra2Pt2 and Ca2Pt2-because of flatter potential energy curves of Ra2Pt2 with the triplet state or Ca2Pt2-with quartet *** results reveal a unique example of dihedral angle-bending isomers with the smallest number of atoms and may help the understanding of the bonding properties of other potential angle-bending isomers.

关键词： Platinum Alkaline earth metals angle-bending isomer dihedral angle

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Studies on the dihedral angle and Torsional Barriers for 4,-Bipyridine

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合成化学 2004年第Z1期12卷 148-148页

作者： CHEN Wen-kai LU Chun-hai XU Jiao LI Jun-qian Department of Chemistry Fuzhou UniversityFuzhou350002China China Academy of Engineering Physics Mianyang621900China

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Studies on the dihedral angle and Torsional Barriers for 4,-Bipyridine

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合成化学 2004年第S1期 148-148页

作者： CHEN Wen-kai *1, LU Chun-hai 2, XU Jiao1, LI Jun-qian1 1. Department of Chemistry, Fuzhou University, Fuzhou, 350002, China 2. China Academy of Engineering Physics, Mianyang, 621900, China

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Two Theorems on Volume and dihedral angles of a n-dimensional Simplex

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Chinese Quarterly Journal of Mathematics 1993年第2期8卷 87-93页

作者：杨世国 Anhui Education Intitute Hefei

In this gape, we obtain thorem I on volum of a n-dirmensional simplex and theorem 2 on dihedral angies of a simplex. Besides. We obtain Vasic inequality in E^n and its extension. The resultsin this paper contain and i... 详细信息

关键词： simplex dihedral angle volume.

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The Role of Elytra in Beetle Flight: Ⅰ.Generation of Quasi-Static Aerodynamic Forces

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Journal of Bionic Engineering 2010年第4期7卷 354-363页

作者： Patar Ebenezer Sitorus Hoon Cheol Park Doyoung Byun Nam Seo Goo Cheol Heui Han National Research Laboratory for Biomimetics and Intelligent Microsystems Konkuk University Department of Advanced Technology Fusion Konkuk University Department of Aerospace Information System Engineering Konkuk University Department of Aeronautical and Mechanical Design Chungju National University

We conducted a comprehensive study to investigate the aerodynamic characteristics and force generation of the elytra of abeetle,Allomyrina *** analysis included wind tunnel experiments and three-dimensional computational fluiddynamics simulations using ANSYS-CFX *** first approach was a quasi-static study that considered the effect ofinduced flapping flow due to the flapping motion of the fore-wings (elytra) at a frequency of around 30 Hz to 40 *** dihedralangle was varied to represent flapping motion during the upstroke and *** found that an elytron producespositive lift at 0° geometric angle of attack,negative lift during the upstroke,and always produces drag during both the upstrokeand *** also found that the lift coefficient of an elytron does not drop even at a very high geometric angle of *** a beetle with a body weight of 5 g,based on the quasi-static method,the fore-wings (elytra) can produce lift of less than 1%of its body weight.

关键词： elytra angle of attack dihedral angle CFD wind tunnel test

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On combinatorial Gauss-Bonnet Theorem for general Euclidean simplicial complexes

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Frontiers of Mathematics in China 2016年第5期11卷 1345-1362页

作者： Stephan KLAUS Scientific Administrator of the MFO and Adjunct Professor at Mainz University Mathematisches Forschungsinstitut Oberwolfach gGmbH (MFO) Schwarzwaldstrasse 9-11 D-77709 Oberwolfach-Walke Germany

For a finitely triangulated closed surface M2, let αx be the sum of angles at a vertex x. By the well-known combinatorial version of the 2- dimensional Gauss-Bonnet Theorem, it holds ∑x（2π- αx） =2αχ（M^2）, where X denotes the Euler characteristic of M^2, αx denotes the sum of angles at the vertex x, and the sum is over all vertices of the triangulation. We give here an elementary proof of a straightforward higher-dimensional generalization to Euclidean simplicial complexes K without assuming any combinatorial manifold condition. First, we recall some facts on simplicial complexes, the Euler characteristics and its local version at a vertex. Then we define δ（τ） as the normed dihedral angle defect around a simplex τ. Our main result is ∑τ（-1）^dim（τ）δ（τ） = χ（K）, where the sum is over all simplices τ of the triangulation. Then we give a definition of curvature k（x） at a vertex and we prove the vertex-version ∑x∈K0 k（x） = χ（K） of this result. It also possible to prove Morse-type inequalities. Moreover, we can apply this result to combinatorial （n ＋ 1）-manifolds W with boundary B, where we prove that the difference of Euler characteristics is given by the sum of curvatures over the interior of W plus a contribution from the normal curvature along the boundary B： χ（W）- 1/2 χ（B） = ∑τ∈W-B（-1）^dim（τ）δ（τ）＋ ∑τB（-1）^dim（τ）ρ（τ）.

关键词： Curvature dihedral angle Euclidean simplex triangulation Euler characteristic Euler manifold combinatorial manifold pseudo manifold

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Micro-Raman studies on the conformational behaviors of monosodium glutamate in dehydration process

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Chinese Chemical Letters 2011年第7期22卷 855-858页

作者： Jing Jing Shou Guang Zeng Hao Zhang Yun Hong Zhang The Institute of Chemical Physics Key Laboratory of Cluster Science Beijing Institute of Technology Beijing 100081 China

The conformational behaviors of monosodium glutamate （MSG） in a dehydration process were studied by Micro-Raman spectroscopy in combination with Hartree-Fock calculations using 6-3 1＋G^＊ method. The dehydration process of the MSG droplet was performed by decreasing the ambient relative humidity （RH）. The intensity ratio of the 935 cm^-1 band to 884 cm^-1 band （I935/ 1884） kept decreasing when RH decreased. By optimizing the geometries with different fixed dihedral angles, the downtrend of （I935/I884） is found to be due to the reduction of MSG molecular volume.

关键词： Raman MSG Calculation Dehydration Intensity dihedral angle

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一种含Tröger碱单元的AIE分子的独特力致荧光增强行为

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Science China Materials 2023年第5期66卷 1959-1967页

作者：倪珏宸臧启光张浩可孙景志唐本忠 MOE Key Laboratory of Macromolecules Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China Center of Healthcare Materials Shaoxing InstituteZhejiang UniversityShaoxing 312000China ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 311215China Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhen 518172China

本文报道了一种性能独特的聚集诱导发光分子DTPE-TB,它由位于中间的一个Tröger碱和两端的两个四苯基乙烯(TPE)基团构成.当DTPE-TB分子固体受到机械力作用时,Tröger碱的A-型结构通过改变二面角发生形变承载外力,使分子内运动受限加重,固... 详细信息

本文报道了一种性能独特的聚集诱导发光分子DTPE-TB,它由位于中间的一个Tröger碱和两端的两个四苯基乙烯(TPE)基团构成.当DTPE-TB分子固体受到机械力作用时,Tröger碱的A-型结构通过改变二面角发生形变承载外力,使分子内运动受限加重,固体荧光增强.而TPE基团受力很小,其排列方式基本不变,所以发光波长仅有微小移动.我们将这种特殊的力致发光变色效应命名为力致荧光增强.

关键词： aggregation-induced emission mechano-induced emission enhancement dihedral angle Λ-shaped configuration Tröger’s base

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