Results 91 to 100 of about 1,296,267 (363)

A numerical well testing method for fractured-vuggy reservoirs based on fast marching method

Youqi dizhi yu caishoulu
In fractured-vuggy reservoirs， triple media consisting of fractures， vugs， or pores significantly affects oil and gas flow. However， traditional well testing interpretation methods have been proven to be ineffective in accurately describing the flow ...
DU Yawen, TENG Bailu, CAI Hanxing, LI Qingquan   +3 more
doaj   +1 more source

A new numerical well testing approach: Application to characterization of complex fault structures

Petroleum, 2019
Fluid flow in hydrocarbon reservoirs and consequently optimum scenario for hydrocarbon production, is heavily influenced by reservoir heterogeneities. Faults are one of the most common types of heterogeneity found in reservoirs.
Behzad Pouladi, Mohammad Sharifi, Mohammad Reza Akbari, S.M. Hosseini-Nasab   +3 more
doaj   +1 more source

Numerical Study of the Cahn-Hilliard Equation in One, Two and Three Dimensions

, 2004
The Cahn-Hilliard equation is related with a number of interesting physical phenomena like the spinodal decomposition, phase separation and phase ordering dynamics.
Ames, Bianconi, Bray, Cahn, Caixeiro, Chakrabarti, Dagotto, Dagotto, de Mello, de Mello, Douglas, E.V.L. de Mello, Elliot, Elliot, Gunton, Hohenberg, Howald, Lifshitz, Mathews, Mihailovic, Milchev, Otton Teixeira da Silveira Filho, Ovchinnikov, Ovchinnikov, Pan, Park, Toral, Traquada, Wang   +28 more
core   +1 more source

Multi‐Material Additive Manufacturing of Soft Robotic Systems: A Comprehensive Review

Advanced Robotics Research, EarlyView.
This review explores the transformative role of multi‐material additive manufacturing (MMAM) in the development of soft robotic systems. It presents current techniques, materials, and design strategies that enable functionally graded and adaptive structures.
Ritik Raj, Quan‐Chen Song, Jia‐Yang Juang   +2 more
wiley   +1 more source

Vessel tree extraction using radius-lifted keypoints searching scheme and anisotropic fast marching method

Journal of Algorithms & Computational Technology, 2016
Geodesic methods have been widely applied to image analysis. They are particularly efficient to extract a tubular structure, such as a blood vessel, given its two endpoints in a 2D or 3D medical image.
Da Chen, Jean-Marie Mirebeau, Laurent D Cohen   +2 more
doaj   +1 more source

Bi-Plane X-ray coronary 3D reconstruction for flow velocity assessment [PDF]

, 2009
In coronary angiography the coronary blood flow velocity can be assessed by tracking a contrast agent in an image sequence. The contrast agent flow velocity is used to estimate the functional behavior of the coronary arteries using TIMI frame count (TFC).
Brinke, G.A. ten, Slump, C.H., Storm, C.J.   +2 more
core   +1 more source

CDDT: Fast Approximate 2D Ray Casting for Accelerated Localization

, 2018
Localization is an essential component for autonomous robots. A well-established localization approach combines ray casting with a particle filter, leading to a computationally expensive algorithm that is difficult to run on resource-constrained mobile ...
Karaman, Sertac, Walsh, Corey
core   +1 more source

A Cold Stress‐Activated Endocrine Sentinel Chemical Hormone Promotes Insect Survival via Mitochondrial Adaptations Through the Adipokinetic Hormone Receptor

Advanced Science, EarlyView.
Seasonal cold adaptation is vital for insect survival, yet the molecular mechanisms linking diapause to mitochondrial resilience remain largely unresolved. We identify ascaroside C9 (asc‐C9) as a key endocrine signal that enhances diapause survival during cold stress by activating the AKHR–PGC1α–UCP4 axis, thereby driving cold‐induced lipolysis and ...
Jiao Zhou, Junxian Chen, Hongxia Zhang, Lu Guo, Kevin Mai, Elijah Abraham, Dilip V. Prajapati, Yue Chang, Jing Ning, Xinchen Wang, Defeng Li, Dan‐Dan Zhang, Jianghua Sun, Rebecca A. Butcher, Lilin Zhao   +14 more
wiley   +1 more source

PARPi Combining Nanoparticle LIN28B siRNA for the Management of Malignant Ascites

Advanced Science, EarlyView.
This study demonstrates that co‐inhibition of LIN28B and PARP using siLin28b/DSSP@lip‐PEG‐FA nanoparticles in combination with the PARP inhibitor BMN673 effectively suppresses the accumulation of malignant ascites associated with advanced cancers.
Yan Fang, Qian Shen, Yao Lin, Jing Zhu, Xiaolan Zhu, Rui Huang, Yijia Wu, Feiyang Shen, Qian Li, Guopei Zheng, Zhe Zhang, Qian Chu, Junhao Hu, Jianfeng Shen   +13 more
wiley   +1 more source

Dynamic collision avoidance method of unmanned sailboat based on improved fast-marching square method

Zhongguo Jianchuan Yanjiu
ObjectiveA local dynamic collision avoidance algorithm based on an improved fast-marching square (IFMS) method is proposed to solve the multi-vessel collision avoidance problem of unmanned sailboats in open water.
Wentao ZHAO, Longyue JING, Zhaoyang SUN, Yan HUANG, Hualong XIE   +4 more
doaj   +1 more source