Results 91 to 100 of about 12,466 (308)

Wing length, weight and fat in passerine birds ringed at Tit-Ary Island, Lena-Delta, August 1998 [PDF]

open access: yes, 2007
Wing length, weight and fat in passerine birds ringed at Tit-Ary Island, Lena-Delta, August ...
Solovieva, Diana V   +1 more
core   +1 more source

Metasurface‐Enabled Active‐Like Passive Radar

open access: yesAdvanced Science, EarlyView.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li   +7 more
wiley   +1 more source

Monostatic radar cross section of flying wing delta planforms

open access: yesEngineering Science and Technology, an International Journal, 2017
The design of the flying wing and its variants shapes continues to have a profound influence in the design of the current and future use of military aircraft.
Sevoor Meenakshisundaram Vaitheeswaran   +3 more
doaj   +1 more source

Experimental investigation of delta wing flow behaviour under pitching motion [PDF]

open access: yes, 2015
This paper presents an experimental study of delta wing flow behaviour under pitching motion. The aim is to investigate the pressure distribution of the flow over sharp-edged delta wing. The flow behaviour over the upper surface of a delta wing is mainly
Huri, M. Z. A. D., Mat, Shabudin
core  

A Data‐Driven Inverse Design Methodology for Magnetic Soft Millirobots Navigating in Confined Spaces

open access: yesAdvanced Science, EarlyView.
A data‐efficient inverse design framework automates the optimization of magnetic soft millirobots for confined‐space navigation. Integrating a physics‐based Cosserat rod model with Bayesian optimization efficiently identifies high‐performance geometries.
Ziyu Ren   +5 more
wiley   +1 more source

Quantifying Structure–Property Relationships in Ferroelectric Polymers Toward High‐Performance Soft Robots

open access: yesAdvanced Science, EarlyView.
Here, we establish a quantitative relationship between the electrostriction coefficient (Q33) of FRPs and their interplanar spacing (d): Q33 = 100(Δd/d0+1) × Q33(s). Using this model, we fabricated high‐performance soft robots, including a biomimetic crawler (with a speed of 27 cm/s) and a butterfly (with a thrust‐to‐weight ratio of 0.71).
Ba Qin   +8 more
wiley   +1 more source

Design of a pitching delta wing in a free stream [PDF]

open access: yes, 2011
This final year project involves the design of a pitching delta wing subjected to a free stream in a water tunnel as well as investigating the hysteresis effect with vortex breakdown phenomenon associated with the pitching delta wing. A literature survey
He, Yueyu.
core  

Intramolecular Interactions between Folded and Disordered Regions Shape Ubiquilin Structure and Function

open access: yesAdvanced Science, EarlyView.
Ubiquilin (UBQLN), like many other human proteins, contains both well‐folded and disordered regions. Here, we show that intramolecular interactions between disordered regions and folded domains modulate between open and closed topologies of UBQLN proteins, altering their structure and function.
Jessica K. Niblo   +4 more
wiley   +1 more source

An Experimental and Numerical Thermal Flow Analysis in a Diffuser by Inserting Different Types of Vortex Generators, Part (I) [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
The present study aims to estimate the Heat Transfer (HT) effectiveness of a diffuser roughened with different configurations of Wing Vortex Generators (WVGs), employing both empirical and numerical approaches.
Eshagh Delavariyan   +4 more
doaj   +1 more source

Stem Cell Differentiation Disperses Transcriptional Clusters via a Conserved Surface‐Condensate Trajectory

open access: yesAdvanced Science, EarlyView.
Stem cell differentiation follows a conserved surface condensate trajectory: H3K27ac super enhancers nucleate large RNA polymerase II clusters that grow and unfold before transcriptional activity disperses them. This work reveals how biophysical forces at enhancer surfaces dynamically build and dismantle stem cell transcription hubs, reshaping cell ...
Tim Klingberg   +18 more
wiley   +1 more source

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