Results 31 to 40 of about 814,707 (170)

Conical spaces, modular invariance and c p,1 holography

Journal of High Energy Physics, 2021
We propose a non-unitary example of holography for the family of two-dimensional logarithmic conformal field theories with negative central charge c = c p,1 = −6p + 13 − 6p −1.
Joris Raeymaekers
doaj   +1 more source

LAPLACE EQUATIONS, CONFORMAL SUPERINTEGRABILITY AND BÔCHER CONTRACTIONS

Acta Polytechnica, 2016
Quantum superintegrable systems are solvable eigenvalue problems. Their solvability is due to symmetry, but the symmetry is often ``hidden''.The symmetry generators of 2nd order superintegrable systems in 2 dimensions close under commutation to define ...
Ernest G. Kalnins, Willard Miller, Jr, Eyal Subag   +2 more
doaj   +1 more source

Chemotherapy‐Activated GSK3β‐DNMT1 Signaling Upregulates CD47 to Evade Macrophage Phagocytosis and Drive Temozolomide Resistance in Glioblastoma

Advanced Science, EarlyView.
Temozolomide treatment activates GSK3β, driving DNMT1 phosphorylation, destabilization, and CD47 promoter hypomethylation in glioblastoma. This epigenetic shift upregulates CD47, enabling TMZ‐treated GBM cells to evade macrophage phagocytosis, survive chemotherapy, and acquire resistance.
Jie Li, Shuai Ying, Yi Zhang, Jingjing Wang, Quan Wan, Lingli Gong, Daxing Xu, Zhenkun Yang, Hongnian Lu, Ying Yin, Xiangming Fang, Zhening Pu   +11 more
wiley   +1 more source

A Geometric Algebra Co-Processor for Color Edge Detection

, 2015
This paper describes advancement in color edge detection, using a dedicated Geometric Algebra (GA) co-processor implemented on an Application Specific Integrated Circuit (ASIC).
Wilcock, Reuben, Wilson, Peter R., Mishra, Biswajit, Biswajit Mishra, Reuben Wilcock, Peter Wilson   +5 more
core   +1 more source

Bioconvective Unsteady Casson Hybrid Nanofluid Flow on a Variable Darcy Regime Between Two Rotating Disks With Variable Heat Source

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study carries significant consequences in various engineering applications, such as cooling rotating disk surfaces, improving chemical reactor performance, and designing filtration systems. Considering these main applications in view, the aim of this study is to investigate time‐dependent Casson hybrid nanofluid flow on a permeable ...
Ebrahem A. Algehyne, Abdul Bariq, Mounirah Areshi, Fahad Maqbul Alamrani, Zehba Raizah, Izharul Haq, Anwar Saeed   +6 more
wiley   +1 more source

Pose Estimation of Non-Cooperative Space Targets Based on Cross-Source Point Cloud Fusion

Remote Sensing, 2021
On-orbit space technology is used for tasks such as the relative navigation of non-cooperative targets, rendezvous and docking, on-orbit assembly, and space debris removal.
Jie Li, Yiqi Zhuang, Qi Peng, Liang Zhao
doaj   +1 more source

Hybrid Inertial–Centrifugal Gas–Liquid Separator: CFD‐Driven Optimization Using Coupled Discrete Phase and Wall‐Film Modeling With Response Surface Methodology

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Efficient removal of liquid aerosols from compressed gas streams is essential in chemical and energy processes. Conventional separators relying on a single mechanism (inertial or centrifugal) struggle to capture both fine and coarse droplets simultaneously.
Son Ung Kang, Phyong Jon Thak, Kyong Jun Ri, Chung Hyok Choe   +3 more
wiley   +1 more source

Local Control of (4,5,7,8-10)-Filtration Snake Robot via CGA

Mendel, 2017
We describe the local control of a (6{8){link snake like robot endowed with omnidirectional wheels on two links (head and tail). All calculations including the position, direct kinematics, di erential kinematics and inverse kinematics are described in ...
Jaroslav Hrdina, Ales Navrat, Petr Vasik, Radomil Matousek   +3 more
doaj   +1 more source

Compact Manifolds With Unbounded Nilpotent Fundamental Groups and Positive Ricci Curvature

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT It follows from the work of Kapovitch and Wilking that a closed manifold with nonnegative Ricci curvature has a uniformly almost nilpotent fundamental group. Leftover questions and conjectures, have asked if in this context the fundamental group is actually uniformly almost abelian. The main goal of this work is to construct examples (Mk9,gk)$(
Elia Bruè, Aaron Naber, Daniele Semola
wiley   +1 more source

Revisiting the Hansen Problem: A Geometric Algebra Approach

Mathematics
The Hansen problem is a classic and well-known geometric challenge in geodesy and surveying involving the determination of two unknown points relative to two known reference locations using angular measurements.
Jorge Ventura, Fernando Martinez, Isiah Zaplana, Ahmad Hosny Eid, Francisco G. Montoya, James Smith   +5 more
doaj   +1 more source