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中国地质大学科学技术发展院马奔奔* 等, 资源学院/构造与油气资源教育部重点实验室. AAPG Bulletin, December 2019, Carbonate cementation patterns,potential mass transfer,and implications for reservoir heterogeneity in Eocene tight-oil sandstones,Dongying depression,Bohai Bay Basin, China:Evidence from pet
深埋藏条件下；砂岩储层水；相互作用；潜在；成岩物质；迁移方式
2021/10/15
近日，中国地质大学资源学院马奔奔副教授团队在国际顶级石油地质期刊《AAPG Bulletin》上刊发研究成果，研究成果主要揭示了深埋藏条件下致密砂岩储层水-岩相互作用过程、潜在成岩物质迁移方式及其成岩响应机制。
D&P Forum: Characterization of Tight Reservoirs
Fracture Characterization Near Wellbore Formation Evaluation
2016/7/27
Following the success of several D&P Forums around the world, the SEG D&P Committee would like to hold a second workshop in the Middle East. Society of Exploration Geophysicists (SEG) is proud to anno...
The Effects of Glucagon-like Peptide-2 on the Tight Junction and Barrier Function in IPEC-J2 Cells through Phosphatidylinositol 3-kinase–Protein Kinase B–Mammalian Target of Rapamycin Signaling Pathway
Transepithelial Electrical Resistance Phosphatidylinositol 3-Kinase-Akt-mTOR Signaling Pathway
2016/5/20
Glucagon-like peptide-2 (GLP-2) is important for intestinal barrier function and regulation of tight junction (TJ) proteins, but the intracellular mechanisms of action remain undefined. The purpose of...
Prime tight frames
divisible frames equiangular tight frames frames harmonic tight frames prime frames spectral tetris frames tight frames
2015/12/10
We introduce a class of finite tight frames called prime tight frames and prove some of their elementary properties. In particular, we show that any finite tight frame can be written as a union of pri...
FINITE TWO-DISTANCE TIGHT FRAMES
Spherical two-distance sets finite tight frames strongly regular graphs spherical 2-designs spherical designs of harmonic index 2
2015/12/10
A finite collection of unit vectors S ⊂ Rn is called a spherical two-distance set if there are two numbers a and b such that the inner products of distinct vectors from S are either a or b. We p...
Tight bounds for LDPC and LDGM codes under MAP decoding
Conditional entropy Low Density Parity Check Codes Maximum A Posteriori probability decoding Spin glasses Statistical physics
2015/8/21
A new method for analyzing low density parity check (LDPC) codes and low density generator matrix (LDGM) codes under bit maximum a posteriori probability (MAP) decoding is introduced. The method is ba...
New Tight Frames of Curvelets and Optimal Representations of Objects with C2 Singularities
Curvelets wavelets second dyadic decomposition edges nonlinear approximation singularities thresholding Radon transform
2015/6/17
This paper introduces new tight frames of curvelets to address the problem of finding optimally sparse representations of objects with discontinuities along C2 edges.Conceptually, the curvelet transfo...
Tight Oracle Bounds for Low-rank Matrix Recovery from a Minimal Number of Random Measurements
Matrix completion The Dantzig selector oracle inequalities norm of random matrices convex optimization and semidefinite programming
2015/6/17
This paper presents several novel theoretical results regarding the recovery of a low-rank matrix from just a few measurements consisting of linear combinations of the matrix entries. We show that pro...
Tight Focusing of Light Beams: Effect of Polarization, Phase, and Coherence
Tight Focusing Light Beams Effect of Polarization Phase Coherence
2013/7/3
The focusing theory of electromagnetic waves has been well developed. A scalar wave theory satisfactorily describes the focusing process for a small semi-aperture angle. However, the vectorial charact...
Tight focusing properties of hybridly polarize d vector beams
Tight focusing properties hybridly polarize dvector beams
2013/7/3
We theoretically investigate the tight focusing properties of hybridly polarized vector beams. Some numerical results are obtained to illustrate the intensity, phase, and polarization of tightly focus...
A tight colored Tverberg theorem for maps to manifolds
colored Tverberg theorem manifolds Combinatorics Algebraic Topology
2011/9/1
Abstract: We prove that any continuous map of an N-dimensional simplex Delta_N with colored vertices to a d-dimensional manifold M must map r points from disjoint rainbow faces of Delta_N to the same ...
Complex Equiangular Tight Frames and Erasures
Equiangular Tight Frames Seidel Matrix Functional Analysis
2011/9/2
Abstract: In this paper we demonstrate that there are distinct differences between real and complex equiangular tight frames (ETFs) with regards to erasures. For example, we prove that there exist arb...
Tight Approximation Ratio of a General Greedy Splitting Algorithm for the Minimum k-Way CutProblem
k-way cut Approximation algorithm
2012/12/3
For an edge-weighted connected undirected graph, the minimum k-way cut problem is to find a subset of edges of minimum total weight whose removal separates the graph into k connected components. The p...
Tight focusing of partially polarized vortex beams by binary phase Fresnel zone plates
partially polarized vortex beams high numerical aperture binary phase Fresnel zone plates
2013/7/3
Based on vectorial Debye theory, the focusing properties of partially polarized vortex beam by high numerical aperture Fresnel zone plate are investigated. The effects of the numerical apertures of an...
Tight focusing properties of linearly polarized Gaussian beam with a pair of vortices
Tight focusing High numerical-aperture Apairofvortices Vector Debye integral Topological charge
2013/7/3
The properties of a pair of vortices embedded in a Gaussian beam focused by a high numerical-aperture are studied on the basis of vector Debye integral. The vortices move and rotate in the vicinity of...