Results 61 to 70 of about 195,308 (340)

Migration in Birds and Fishes [PDF]

Bijdragen tot de Dierkunde, 1949
Our knowledge concerning the periodical movements in animals called migrations is chiefly based on observations on birds. By and by, however, a number of facts concerning migration in other animal groups have been assembled and it seems worth while to compare them with those known for birds. There is the more reason to do so here, because the victim of
openaire   +3 more sources

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

Advanced 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, Liuzhou Mao, Qi Wang, Haohua Hu, Bahriman Xarpidin, Zheng Luo, Yun‐Long Wu   +6 more
wiley   +1 more source

Shifts in Bird Migration Timing in North American Long-Distance and Short-Distance Migrants Are Associated with Climate Change

International Journal of Zoology, 2017
Bird migration is a synchronized event that has evolved over thousands of years. Changing temperatures due to climate change threaten the intricacies of migration timing for birds; however, the extent of these changes has only recently begun to be ...
Jay Zaifman, Daoyang Shan, Ahmet Ay, Ana Gabriela Jimenez   +3 more
doaj   +1 more source

(Micro)evolutionary changes and the evolutionary potential of bird migration

, 2018
Seasonal migration is the yearly long-distance movement of individuals between their breeding and wintering grounds. Individuals from nearly every animal group exhibit this behavior, but probably the most iconic migration is carried out by birds, from ...
A Helbig, A Helbig, A Johnsen, AC Perdeck, AJ Helbig, AP Møller, BM Winger, BM Winger, Butlin R et al, The Marie Curie Speciation Network, C Bell, D Schluter, DE Irwin, DL Rabosky, E Schüz, E Schüz, E Yohannes, ESC Scordato, F Pulido, F Pulido, F Pulido, G Bazzi, G Rolshausen, G Voelker, GM Hewitt, GM Hewitt, GW Cox, H Rundle, HA Hochbaum, J Belliure, J Rappole, J Rolland, JA Rönn von, JB Phillips, JC Müller, JH Brown, JH Rappole, JS Lugo Ramos, K Ruegg, KA Hobson, KE Delmore, KE Delmore, KE Delmore, KE Delmore, KE Delmore, KE Plummer, KG O’Malley, M Caprioli, M Liedvogel, M Liedvogel, M Liedvogel, M Lundberg, N Chernetsov, N Chernetsov, N Saino, N Saino, P Berthold, P Berthold, P Berthold, P Berthold, P Berthold, P Nosil, PP Marra, PR Grant, R Dor, R Dor, R Mettler, R Zink, RJ Safran, RM Zink, S Bearhop, S Lamichhaney, S Rohwer, S Zhan, T Alerstam, T Veen, TD Price, V Salewski, VL Friesen, W Wiltschko, W Wiltschko, W Wiltschko, WW Cochran   +81 more
core   +1 more source

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

Advanced 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, Yuanfang Yu, Xinglei Zhang, Zhihao Qu, Zhaofu Chen, Shizheng Wang, Yinan Wang, Ting Zheng, Weiwei Zhao, Junpeng Lu, Hongwei Liu   +10 more
wiley   +1 more source

Altitudinal migration behavior patterns of birds on the eastern slope of Mt. Gongga, China

Avian Research, 2023
Many bird species in montane regions exhibit altitudinal migration behavior; however, altitudinal migration of birds is still understudied, especially in Asia. Mt. Gongga (7556 ​m) is the highest peak of the Hengduan Mountains in Southwest China.
Ian Haase, Zhengwei Liu, Shangmingyu Zhang, Zhehan Dong, Yuwen Cheng, Kaize Feng, Kexin Peng, Jianghong Ran, Yongjie Wu   +8 more
doaj  

Are agrochemical‐free and biodiversity‐friendly attributes substitutes or complements? Evidence from a coffee choice experiment

Agribusiness, EarlyView.
Abstract Eco‐labels inform consumers about the sustainable attributes of a product, but consumer face challenges to differentiate and select for specific attributes. Certification programs are similarly challenged to incentivize adoption of sustainable practices in product supply chains when consumer ability to differentiate sustainable attributes is ...
Nicolas Gatti, Miguel I. Gómez, Ruth E. Bennett, Scott Sillett, Justine Bowe, Jie Li   +5 more
wiley   +1 more source

Migration of Birds—A Suggestion [PDF]

Nature, 1879
I BELIEVE that the migration of birds is one of the most interesting problems to the many who dabble in the narrative branch of natural history. It must also be of some interest to those who study biology in its more strictly scientific form. And yet there appears to be but little accurate information on the subject; nor, as far as I can discover, have
openaire   +3 more sources

The economics of bird migration [PDF]

Ostrich, 2000
Piersma, T. 2000. The economics of bird migration. Ostrich 71(1): 362. Through their migrations birds spin a worldwide web of migratory routes. Even at the level of individuals and populations, the migrations can cover a large part of the globe. Many factors are involved in the evolution and maintenance of all these migration systems: the contingencies
openaire   +2 more sources

Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios, Léon Chiriatti, Simon Poppinga, Thomas Speck, Vincent Le Houérou   +4 more
wiley   +1 more source