Results 111 to 120 of about 184,150 (234)

Investigation into the Energy Performance of a Pump-Turbine Under High-Load Conditions: Energy Loss and Output Power Decline

Applied Sciences
Pump-turbines often experience performance deterioration under high-load conditions beyond their best efficiency point, while the underlying flow mechanisms remain insufficiently understood. In this study, we investigate the relationship between internal
Lingkai Zhu, Kai Liang, Yunkuan Yu, Ziwei Zhong, Zhiqiang Gong, Junshan Guo, Huixiang Chen, Kan Kan   +7 more
doaj   +1 more source

A parametric study of axial flow jets for mitigation of vortex rope instabilities

IOP Conference Series: Earth and Environmental Science
Abstract Hydraulic turbines are typically designed to operate continuously at their optimal efficiency. However, the growing reliance on intermittent energy sources has resulted in more frequent operation under transient and off-design conditions, which increases stress on the turbines and shortens their lifespan.
Saeed Salehi, Håkan Nilsson
openaire   +1 more source

Artificial intelligence prediction algorithms for refractive error onset and progression in children and adolescents: A systematic review and meta‐analysis

Acta Ophthalmologica, EarlyView.
Abstract This systematic review and meta‐analysis evaluates the performance of artificial intelligence (AI)‐based models for predicting the onset and progression of refractive error (RE) in children and adolescents and quantitatively synthesizes their prediction accuracy.
Athanasia Sandali, Anna Nikolaidou, Theodora Gianni, Andreas Katsimpris, Ioannis D. Apostolopoulos, Lampros Lamprogiannis, Eirini Maliagkani   +6 more
wiley   +1 more source

Bioengineered microbiotic levodopa therapy improves cognition and reduces pathology in a rat model of Alzheimer's disease

British Journal of Pharmacology, EarlyView.
Background and Purpose Degeneration of the pontine noradrenergic and midbrain dopaminergic systems contributes to cognitive‐behavioural disturbances during the prodromal stages of Alzheimer's disease (AD). We developed a genetically engineered, programmable probiotic Escherichia coli Nissle 1917 strain (EcNrhaL‐DOPA) capable of producing L‐3,4 ...
Mona Abdelhamid, Piyush Padhi, Mahsa Gifani, John S. Beck, Jacob P. Thomas, Gargi Khadse, Catherine Kudela, Gregory J. Phillips, Anumantha G. Kanthasamy, Scott E. Counts   +9 more
wiley   +1 more source

Spectral Techniques for Solving PDE Stability Model of Vortex Rope

, 2012
In this paper spectral methods are applied to investigate the hydrodynamic instability of swirling flow with application to Francis hydraulic turbine. Spectral methods imply representing the problem solution as truncated series of smooth global functions.
openaire   +2 more sources

Myofibroblast‐Like CAFs in Metastatic Lymph Nodes Drive Tumor Stemness and Poor Prognosis in Head and Neck Cancer

Cancer Science, EarlyView.
Compared with PT‐CAFs, LN‐CAFs exhibited a myofibroblast‐like phenotype, enhanced tumor stemness‐promoting activity, and fibrosis‐, EMT‐, and hypoxia‐related transcriptomic signatures. LN‐CAF‐related gene signatures were independently associated with poor prognosis in head and neck squamous cell carcinoma.
Hiroyuki Hagiwara, Hideyuki Takahashi, Reika Kawabata‐Iwakawa, Miho Uchida, Hiroe Tada, Toshiyuki Matsuyama, Masaomi Motegi, Yuichi Tomidokoro, Kazuaki Chikamatsu   +8 more
wiley   +1 more source

A vortex dynamics perspective on stratospheric sudden warmings [PDF]

, 2009
A vortex dynamics approach is used to study the underlying mechanisms leading to polar vortex breakdown during stratospheric sudden warmings (SSWs).
Matthewman, N.J.
core  

Story2Board: A Training‐Free Approach for Expressive Visual Storytelling

Computer Graphics Forum, EarlyView.
Abstract We present Story2Board, a training‐free framework for expressive storyboard generation from natural language. Existing methods narrowly focus on subject identity, overlooking key aspects of visual storytelling such as spatial composition, background evolution, and narrative pacing.
D. Dinkevich, M. Levy, O. Avrahami, D. Samuel, D. Lischinski   +4 more
wiley   +1 more source

Vortex equilibria in flow past a plate [PDF]

, 2008
Families of vortex equilibria, with constant vorticity, in steady flow past a flat plate are computed numerically. An equilibrium configuration, which can be thought of as a desingularized point vortex, involves a single symmetric vortex patch located ...
McDonald, NR
core  

Attention Based Optimization for 3D Shape Registration

Computer Graphics Forum, EarlyView.
Abstract Transformers are sequence‐to‐sequence architectures originally designed to handle structurally rigid and order‐sensitive data, such as text and images. At their core, they exploit the attention mechanism, which is permutation‐equivariant and relies on computing token‐to‐token relationships.
A. Riva, L. Olearo, S. Melzi
wiley   +1 more source