Results 51 to 60 of about 43,499 (308)

The positive definite matrix completion problem

Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie, 2015
No abstract ...
openaire   +2 more sources

VE‐Cadherin–Actin Regulation Promotes Mechanotransduction and Monolayer Maturation Involving a Tension‐Sensitive Intermediate State

Advanced Science, EarlyView.
This study investigates how endothelial monolayers balance cohesion and plasticity during mechanical stimulation. In HUVECs, shear stress induces a tension‐sensitive intermediate state in which junctional VE‐cadherin and actomyosin relaxation levels coordinate actin/integrin remodeling. This rapid, reversible state strengthens cell junctions, preserves
Jonas Franz, Maria Odenthal‐Schnittler, Jan Philip Kipcke, Jochen Seebach, Zahra Labbaf, Franziska Merten, Vesna Bojovic, Muna Taha, Johannes A. Eble, Erez Raz, Milos Galic, Hans Schnittler   +11 more
wiley   +1 more source

Oncolytic Probiotics with Molecular Pili for Solid Tumor Therapy

Advanced Science, EarlyView.
This study identifies Lactobacillus rhamnosus as an intrinsic oncolytic agent that triggers tumor metabolic collapse via calcium‐dependent ROS bursts. By chemically anchoring collagen‐targeting “molecular pili” to the bacterial surface, the engineered non‐transgenic probiotic (LR@MP) achieves targeted colonization and potent solid tumor suppression ...
Haodong Ge, Chengsheng Ding, Xiao Yang, Si Gao, Changjie Yang, Yuchen Hou, Hongye Wang, Linke Bian, Hao Zhong, Yifan Qu, Luyang Zhang, Junjun Ma, Zhengwei Cai, Wenguo Cui, Minhua Zheng   +14 more
wiley   +1 more source

Symmetric positive semi-definite Fourier estimator of instantaneous variance-covariance matrix [PDF]

, 2023
Jirô Akahori, Nien-Lin Liu, Maria Elvira Mancino, Tommaso Mariotti, Yukie Yasuda   +4 more
openalex   +1 more source

Liver Stiffness Rises Early in MASLD and Drives Inflammation, Lipid Dysmetabolism, and Fibrosis via Piezo1–YAP Mechanotransduction

Advanced Science, EarlyView.
Progressive stiffening of the hepatic extracellular matrix and free fatty acid overload activate the mechanosensor Piezo1 in steatotic hepatocytes, inducing calcium influx and nuclear translocation of Yes‐associated protein. YAP‐dependent nuclear signaling further drives inflammatory and fibrotic gene programs, lipid metabolic reprogramming, and ...
Juan Ma, Ning Xie, Ziwei Wang, Xiru Liang, Yulong Han, Qiang Zhao, Ming Wang, Hongwei Lu, Wanyi Kou, William Alazawi, Jinhai Wang, Lu Li, Ning Liu, Na Liu, Haitao Shi, Feng Xu   +15 more
wiley   +1 more source

Cellular Identity Crisis: RD3 Loss Fuels Plasticity and Immune Silence in Progressive Neuroblastoma

Advanced Science, EarlyView.
Researchers discovered that therapy‐induced loss of RD3 protein in neuroblastoma triggers a dangerous shift: cancer cells become more stem‐like, invasive, and resistant to treatment while evading immune detection. RD3 loss suppresses antigen presentation and boosts immune checkpoints, creating an immune‐silent environment.
Poorvi Subramanian, Sreenidhi Mohanvelu, Sheeja Aravindan, Afsana Parveen Jahir Hussain, Sivasubramani Narayanan, Sabir Salim, Loganayaki Periyasamy, Natarajan Aravindan   +7 more
wiley   +1 more source

An Inversion-Free Method for Finding Positive Definite Solution of a Rational Matrix Equation

The Scientific World Journal, 2014
A new iterative scheme has been constructed for finding minimal solution of a rational matrix equation of the form X+A*X-1A=I. The new method is inversion-free per computing step.
Fazlollah Soleymani, Mahdi Sharifi, Solat Karimi Vanani, Farhad Khaksar Haghani, Adem Kılıçman   +4 more
doaj   +1 more source

Positive definiteness: from scalar to operator-valued kernels [PDF]

Surveys in Mathematics and its Applications, 2021
In this paper we present a short overview of results that provide relationships among scalar, matrix-valued and certain operator-valued positive definite kernels.
V. A. Menegatto
doaj  

Stieltjes moment sequences and positive definite matrix sequences [PDF]

Proceedings of the American Mathematical Society, 1998
For a certain constant δ > 0 \delta >0 (a little less than 1 / 4 1/4 ), every function f : N 0 → ] 0 , ∞ [ f\colon \mathbb {N}_0\to ]
openaire   +2 more sources

Random Time‐Space Coding Metasurfaces for Spatial Control of the Temporal Statistics of Electromagnetic Fields

Advanced Science, EarlyView.
A probabilistic framework based on random time‐space coding metasurfaces enables control of the spatial distribution of electromagnetic fields temporal statistics. By tailoring the marginal and joint distributions of random codes, electromagnetic fields with desired mean and variance patterns are realized, enabling simultaneous transmission and jamming.
Jia Cheng Li, Jiang Han Bao, Che Liu, Tie Jun Cui   +3 more
wiley   +1 more source