Results 81 to 90 of about 149,842 (327)

Cognitive dimensions of predator responses to imperfect mimicry? [PDF]

open access: yes, 2007
Many palatable insects, for example hoverflies, deter predators by mimicking well-defended insects such as wasps. However, for human observers, these flies often seem to be little better than caricatures of wasps – their visual appearance and ...
Abraham   +38 more
core   +4 more sources

Bioinspired Intelligent Soft Robotics: From Multidisciplinary Integration to Next‐Generation Intelligence

open access: yesAdvanced Science, EarlyView.
Soft robotics, featuring intrinsic compliance and biomimetic adaptability, emerges as transformative in next‐generation intelligent systems. This review outlines how advancements in four foundational domains—actuation, materials, manufacturing, and control—drive the evolution of bioinspired intelligent soft robotics, poised to redefine the boundaries ...
Xiaopeng Wang   +7 more
wiley   +1 more source

Solent Disturbance and Mitigation Project Phase II: Predicting the impact of human disturbance on overwintering birds in the Solent. [PDF]

open access: yes, 2012
The Solent coastline provides feeding grounds for internationally protected populations of overwintering waders and wildfowl, and is also extensively used for recreation.
Clarke, Ralph T.   +3 more
core  

Mitochondria‐Targeted ROS Scavenging Natural Enzyme Cascade Nanogels for Periodontitis Treatment via Hypoxia Alleviation and Immunomodulation

open access: yesAdvanced Science, EarlyView.
TPP‐SAT, a mitochondria‐targeted natural enzyme‐cascade nanogel, selectively scavenges mitochondrial ROS (e.g., H2O2/·O2⁻) and converts them into therapeutic O2 via enzymatic cascades, alleviating hypoxia and inflammation. It rebalances M1/M2 macrophage polarization, activates the Nrf2 pathway while suppressing NF‐κB, enhances antioxidant defenses, and
Yanfen Zheng   +6 more
wiley   +1 more source

Differential detectability of rodents and birds in scats of ocelots, Leopardus pardalis (Mammalia: Felidae)

open access: yesZoologia (Curitiba), 2011
Scat analysis is a valuable tool for the description and quantification of mammal diets. However, estimating the number of prey eaten using prey remains found in feces is difficult mainly due to differential digestibility of prey.
Mathias M. Pires   +3 more
doaj   +1 more source

Structural Basis of GABAB Receptor Activation during Evolution

open access: yesAdvanced Science, EarlyView.
This study explores the structural and functional mechanisms of the drosophila GABAB receptor, a key role in neurotransmission. Using cryo‐EM, the research reveals how the receptor's activation differs from its human counterpart, highlighting unique evolutionary features.
Guofei Hou   +14 more
wiley   +1 more source

Condors, Caracaras and the Antisana Ecological Reserve: Have Recent Conservation Efforts Backfired!

open access: yesПернатые хищники и их охрана, 2018
The 1993 creation of the 120,000 ha Antisana Ecological Reserve (Ecuador) to protect the unique flora and fauna surrounding the Volcano Antisana continues to evolve.
Mark R. Welford
doaj  

The food spectrum of sparrowhawk (Accipiter nisus L.) and kestrel (Falco tinnunculus L.) in the Chřiby Upland

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2009
In 2006–2008, mapping the sparrowhawk (Accipiter nisus L.) and kestrel (Falco tinnunculus L.) occurred in the SE part of the Chřiby Upland. At the same time, the food spectrum of these birds of prey was determined during nesting periods.
Martin Tomešek, Petr Čermák
doaj   +1 more source

Community dynamics of insular biotas in space and time [PDF]

open access: yes, 2004
The various features determining species distributions remain enigmatic in ecology. This thesis deals with the spatial and temporal dynamics of land birds on the islands of the Dahlak archipelago, the Red Sea, and of mammals, birds and reptiles among the
Azeria, Ermias Tesfamichael
core  

Bi2O2Se/Ta2NiSe5 Tunneling Heterojunction for High‐Performance, Polarization‐Sensitive, and Broadband Infrared Photodetector

open access: yesAdvanced Electronic Materials, EarlyView.
An optimal dynamic balance between carrier lifetime and transit time is achieved in the Bi2O2Se/Ta2NiSe5 tunneling heterojunction, which simultaneously attains high responsivity (>103 A W−1) and a fast response time (≈5 µs). The specific detectivity can reach 3.75 × 1013 Jones at 633 nm and 1.8 × 1010 Jones at 1550 nm. Abstract New technologies such as
Fang Yang   +10 more
wiley   +1 more source

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