Results 51 to 60 of about 1,057,085 (190)

Monostatic and Bistatic Radar Measurements of Birds and Micro-drone [PDF]

, 2016
This paper analyses the experimental results from recent monostatic and bistatic radar measurements of multiple birds as well as a quadcopter micro-drone. The radar system deployed for these measurements was the UCL developed NetRAD system.
Fioranelli, Francesco, Griffiths, Hugh, Ritchie, Matthew, Torvik, Børge   +3 more
core   +2 more sources

State of the Art of Low‐Frequency Acoustic Modulation: Intensity Enhancement and Directional Control

Advanced Science, EarlyView.
High intensity low‐frequency sound sources hold significant value in many fields. However, their long wavelength, strong penetrability, and tendency to diffract make direction control and intensity enhancement challenging. Acoustic generators and metamaterial‐based acoustic devices still face issues such as low energy efficiency, poor directional ...
Jingsong Xu, Yunfeng Ye, Tao Dong, Zhaochu Yang, Nuno Miguel Matos Pires, Yu Zhou, Fuyu Tao, Jin Wang, Junshan Zhang, Guoxi Luo, Libo Zhao, Qi Mao, Yangtao Wang, Zhuangde Jiang   +13 more
wiley   +1 more source

Rational Design of MOF‐Based Multifunctional Bio‐Nanoreactor for Efficient Detection and Photo‐Degradation of Chloramphenicol

Advanced Science, EarlyView.
A multi‐functional photo‐enzymatic nanoreactor HRP@Fe‐NU‐1003 is developed through co‐immobilization of horseradish peroxidase and FeCl2 on a photosensitive metal–organic frameworks NU‐1003. This material showcases remarkable sensitivity and efficacy in both detecting and subsequently photo‐degrading chloramphenicol residues in food products.
Lu Ran, Niu Feng, Yiming Dong, Huanyu Cai, Yiping Chen, Huailong Teng   +5 more
wiley   +1 more source

Spring migration of Ruffs Philomachus pugnax in Fryslân: estimates of staging duration using resighting data [PDF]

, 2010
Seasonal bird migration involves long flights, but most time is actually spent at intermediate staging areas. The duration of stay at these sites can be evaluated with mark–recapture methods that employ day-to-day local encounters of individually marked ...
Hooijmeijer, Jos C.E.W.,, Piersma, Theunis,, Verkuil, Yvonne I.,, Wijmenga, Jan J.,   +3 more
core   +1 more source

2D Programmable Photodetectors Based on WSe2/h‐BN/Graphene Heterojunctions

Advanced Science, EarlyView.
A programmable non‐volatile bipolar semi‐floating gate photovoltaic photodetector is developed, enabling reversible light response switching and improved response speed. This capability facilitates the successful implementation of the device in dual‐channel optoelectronic hybrid communication, fulfilling the performance demands of high‐speed, large ...
Zhihao Wang, Jialing Jian, Zhengjin Weng, Qianqian Wu, Jian Li, Xingyu Zhou, Wei Kong, Xiang Xu, Liangliang Lin, Xiaofeng Gu, Peng Xiao, Haiyan Nan, Shaoqing Xiao   +12 more
wiley   +1 more source

High‐Performance Synapse Arrays for Neuromorphic Computing via Floating Gate‐Engineered IGZO Synaptic Transistors

Advanced Science, EarlyView.
Indium‐gallium‐zinc oxide synaptic transistors are introduced utilizing an indium‐tin oxide (ITO) floating gate (FG). The ITO FG's higher conductivity and alleviated chemical interactions with the Al2O3 tunneling layer contribute to enhanced performance.
Junhyeong Park, Yumin Yun, Sunyeol Bae, Yuseong Jang, Seungyoon Shin, Soo‐Yeon Lee   +5 more
wiley   +1 more source

Novelty Induces Behavioural And Glucocorticoid Responses In A Songbird Artificially Selected For Divergent Personalities [PDF]

, 2017
Stress physiology is thought to contribute to individual differences in behaviour. In part this reflects the fact that canonical personality measures consist of responses to challenges, including novel objects and environments.
Baugh, Alexander T., Davidson, S. C., Hau, M., Hyder, Laura P., , \u2716, van Oers, K., Witonsky, Kailyn Faye R., , \u2716   +5 more
core   +2 more sources

Multispectral Photonic Structural Colors via Enhanced Interfacial Interference of Ultrathin Cellulose Nanofiber/MXene Films

Advanced Science, EarlyView.
Fabrication of CNF‐MXene free‐standing films: Ti3C2Tx MXene flakes integrated into a cellulose nanofiber (CNF) matrix through layered self‐assembly using vacuum‐assisted filtration. The layered structure of 4 µm thickness is displayed on SEM image.
Valeriia Poliukhova, Botyo Dimitrov, Justin Brackenridge, Laura Mae Killingsworth, Iryna Roslyk, James Fitzpatrick, Yury Gogotsi, Vladimir V. Tsukruk   +7 more
wiley   +1 more source

Influence of rearing environment on development of perching and dustbathing behaviour in laying hens [PDF]

, 2007
Studies have shown that perching and dustbathing behaviour in birds can be affected by how and when the behaviour develops. With the increasing trend away from cages and towards keeping laying hens in larger, more complex housing systems, it is important
Wichman, Anette
core  

In Situ Converting Conformal Sacrificial Layer Into Robust Interphase Stabilizes Fluorinated Polyanionic Cathodes for Aqueous Sodium‐Ion Storage

Advanced Science, EarlyView.
A unique interfacial conversion concept is proposed to establish robust cathode electrolyte interphase for stabilizing fluorinated polyanionic cathodes in aqueous electrolytes. In a typical case, the conformal Al2O3 sacrificial layer is predeposited on high‐voltage sodium vanadium oxy‐fluorophosphates cathode, which can progressively react with trace ...
Peng Gong, Shibo Chai, Xingjie Li, Yibo Dong, Shengjun Zhai, Xihao Chen, Ning Wang, Yuanyuan Li, Jinping Liu   +8 more
wiley   +1 more source