Results 31 to 40 of about 571,229 (299)

Optimal closed-loop wake steering – Part 1: Conventionally neutral atmospheric boundary layer conditions [PDF]

Wind Energy Science, 2020
Strategies for wake loss mitigation through the use of dynamic closed-loop wake steering are investigated using large eddy simulations of conventionally neutral atmospheric boundary layer conditions in which the neutral boundary layer is capped by an ...
M. F. Howland, A. S. Ghate, S. K. Lele, S. K. Lele, J. O. Dabiri, J. O. Dabiri   +5 more
doaj   +1 more source

How accurately do engineering methods capture floating wind turbine performance and wake? A critical perspective using multi-fidelity simulations [PDF]

Wind Energy Science
Despite an increasing number of experimental and numerical studies, the influence of platform motion on wake dynamics (wake recovery and turbulence production) in floating offshore wind turbines is still an open research question.
S. Cioni, F. Papi, P. F. Melani, A. Fontanella, A. Firpo, A. G. Sanvito, G. Persico, V. Dossena, S. Muggiasca, M. Belloli, A. Bianchini   +10 more
doaj   +1 more source

A wake model for free-streamline flow theory. Part 1. Fully and partially developed wake flows and cavity flows past an oblique flat plate [PDF]

, 1961
A wake model for the free-streamline theory is proposed to treat the two-dimensional flow past an obstacle with a wake or cavity formation. In this model the wake flow is approximately described in the large by an equivalent potential flow such that ...
Wu, T. Yao-Tsu
core   +1 more source

Role of the tip vortex in the force generation of low-aspect-ratio normal flat plates [PDF]

, 2007
We investigate experimentally the force generated by the unsteady vortex formation of low-aspect-ratio normal flat plates with one end free. The objective of this study is to determine the role of the free end, or tip, vortex.
Gharib, Morteza, Milano, Michelle, Ringuette, Matthew J.   +2 more
core   +1 more source

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

Molecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary, Jose Javier Bravo‐Cordero   +1 more
wiley   +1 more source

CONTRA-ROTATING PROPELLER AERODYNAMICS SOLVED BY A 3D PANEL METHOD WITH COUPLED BOUNDARY LAYER

Acta Polytechnica, 2017
The aerodynamics of contra-rotating propellers is a complex three-dimensional problem of an unsteady flow, which is often approached by assuming numerous simplifications.
Vít Štorch, Jiří Nožička
doaj   +1 more source

An analytical model of wake deflection due to shear flow [PDF]

, 2010
The main motivation behind this work is to create a purely analytical engineering model for wind turbine wake upward deflection due to shear flow, by developing a closed form solution of the velocity field due to an oblique vortex ring. The effectiveness
3rd EWEA Conference-Torque 2010 : The Science of making Torque from Wind, Micallef, Daniel, Sant, Tonio, Simao Ferreira, Carlos, van Bussel, Gerard   +4 more
core  

Dynamics of Sleep-Wake Transitions During Sleep

, 2002
We study the dynamics of the awakening during the night for healthy subjects and find that the wake and the sleep periods exhibit completely different behavior: the durations of wake periods are characterized by a scale-free power-law distribution, while
Ben-Avraham D., Benington J. H., Borbely A. A., Born J., Bray A. J., Brezinova V., Bunde A. ., C.-C Lo, Carskadon M. A., Chicurel M., Dijk D.-J., Gallopin T. ., H. E Stanley, Havlin S., Ivanov P. Ch. ., J.-H Peter, Kemp B., L. A. Nunes Amaral, McGinty D., Nakao M., P. Ch Ivanov, Rechtschaffen A., S Havlin, T Penzel, Williams R., Zapperi S. .   +25 more
core   +5 more sources

Derivation and characterization of retinal pigment epithelium from urine‐derived iPSCs

FEBS Open Bio, EarlyView.
Age‐related macular degeneration causes vision loss via RPE dysfunction and loss. Traditional iPSC therapies rely on invasive biopsies, limiting scalability. Here, we utilize urine‐derived stem cells as an accessible source to generate u‐iPSCs, successfully differentiated into pigmented RPE. This “Urine‐to‐Retina” platform provides a promising path for
Daniella Beiner, Hainan Zhu, Carol Christine Bosholm, Heuy‐Ching Wang, Tracy Criswell, Anthony Atala, Jian‐Xing Ma, Yuanyuan Zhang   +7 more
wiley   +1 more source

Ketogenic Diet as an Epigenetic Therapy in SETD1B‐Related Epilepsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Histone lysine methyltransferases such as SETD1B regulate chromatin structure and gene transcription. Ketone bodies, including butyrate, act as histone deacetylase inhibitors. We report a 4‐year‐old boy with SETD1B‐related absence epilepsy, refractory to conventional medications, who achieved sustained > 90% seizure reduction on the Modified ...
Erica Tsang, Brian S. Gloss, Jessica P. Hayes, Andrew J. A. Holland, Manoj P. Menezes, Joceline A. Branson, Shekeeb S. Mohammad, Jingya J. Yan, Shrujna Patel, Velda X. Han, Russell C. Dale   +10 more
wiley   +1 more source