Results 41 to 50 of about 3,709,934 (206)

Effects of enhanced productivity of resources shared by predators in a food‐web module: Comparing results of a field experiment to predictions of mathematical models of intra‐guild predation

Ecology and Evolution, 2021
We compared the response to resource enhancement of a simple empirical model of intra‐guild predation (IGP) to the predictions of published, simple mathematical models of asymmetric IGP (a generalist IG Predator that feeds both on a specialist IG Prey ...
David H. Wise, Monica A. Farfan
doaj   +1 more source

Technique of agrotechnical field experiment

Сельскохозяйственные машины и технологии, 2017
Application of modern technologies and innovative technical equipment at cultivation of grain-crops, including winter wheat, flax, clover and rape, causes actuality of carrying out the multivariable field test.
V. V. Golubev, A. V. Kudryavtsev, A. S. Firsov, M. A. Safonov   +3 more
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DOC and DON from grass-clover - results from a field experiment [PDF]

, 2005
The C and N dynamics in perennial grass-clover mixtures are not fully understood although such mixtures dominate temperate grassland. The co-existence of clover and grass involves both competition for and transfer of nutrients between the species.
Høgh-Jensen, Henning, Rasmussen, Jim
core  

Zero-field and Larmor spinor precessions in a neutron polarimeter experiment

, 2008
We present a neutron polarimetric experiment where two kinds of spinor precessions are observed: one is induced by different total energy of neutrons (zero-field precession) and the other is induced by a stationary guide field (Larmor precession).
Alefeld, Badurek, G. Badurek, Golub, Greenberger, Grigoriev, Gähler, Gähler, Haroche, Hasegawa, Hasegawa, Hasegawa, Hasegawa, Hasegawa, J. Klepp, Klepp, Kraan, Nielsen, Rauch, S. Sponar, Summhammer, Wagh, Y. Hasegawa, Yamazaki   +23 more
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Evaluation of WRF-Sfire Performance with Field Observations from the FireFlux experiment [PDF]

, 2012
This study uses in-situ measurements collected during the FireFlux field experiment to evaluate and improve the performance of coupled atmosphere-fire model WRF-Sfire.
Beezley, Jonathan D., Clements, Craig B., Jenkins, Mary Ann, Kochanski, Adam K., Krueger, Steven, Mandel, Jan   +5 more
core   +3 more sources

Aging of poled ferroelectric ceramics due to relaxation of random depolarization fields by space-charge accumulation near grain boundaries

, 2009
Migration of charged point defects triggered by the local random depolarization field is shown to plausibly explain aging of poled ferroelectric ceramics providing reasonable time and acceptor concentration dependences of the emerging internal bias field.
D. M. Smyth, G. Arlt, H. Kungl, H. Thomann, J. Glaum, K. Carl, K. Okazaki, K. Okazaki, K. Okazaki, L. D. Landau, M. J. Hoffmann, O. Hirsch, S. Takahashi, T. Granzow, Yu. A. Genenko   +14 more
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Hanbury Brown-Twiss effect and thermal light ghost imaging [PDF]

, 2008
We show that the essential physics of the Hanbury Brown-Twiss (HBT) and the thermal light ghost imaging experiments is the same, i.e., due to the intensity fluctuations of the thermal light.
A. Gatti, L. Mandel, Li-Gang Wang, M. Schirber, M. Suhail Zubairy, R. Hanbury Brown, Sajid Qamar, Shi-Yao Zhu   +7 more
core   +2 more sources

Variable-Diameter Drum with Concentric Threshing Gap and Performance Comparison Experiment

Applied Sciences, 2020
The threshing gap of the thresher device for rice combine harvester has to be adjusted in real time based on different feed rates to ensure the operation efficiency in the harvesting process.
Yaoming Li, Zhan Su, Zhenwei Liang, Yu Li   +3 more
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Generation and search of axion-like light particle using intense crystalline field

, 2011
Intense electric field $\sim 10^{10}-10^{11}$ V/cm in crystal has been known for a long time and has wide applications. We study the conversion of axion-like light particle and photon in the intense electric field in crystal.
Ahmed, Anselm, Anselm, Avignone, Baier, Bernabei, Bernabei, Bradley, Buchmuller, Chang, Dine, Jaeckel, Kim, Morales, Okun, Paschos, Peccei, Peccei, Shifman, Sikivie, Sikivie, Uggerhoj, van Bibber, Van Bibber, Wei Liao, Weinberg, Wilczek, Zhitnitskii   +27 more
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Elevational distribution patterns and drivers factors of fungal community diversity at different soil depths in the Abies georgei var. smithii forests on Sygera Mountains, southeastern Tibet, China

Frontiers in Microbiology
IntroductionSoil fungal communities play a crucial role in maintaining the ecological functions of alpine forest soil ecosystems. However, it is currently unclear how the distribution patterns of fungal communities in different soil layers of alpine ...
Bo Zhang, Bo Zhang, Bo Zhang, Bo Zhang, Sijie Zhu, Sijie Zhu, Sijie Zhu, Sijie Zhu, Jiangrong Li, Jiangrong Li, Jiangrong Li, Jiangrong Li, Jiangrong Li, Fangwei Fu, Fangwei Fu, Fangwei Fu, Fangwei Fu, Liangna Guo, Liangna Guo, Liangna Guo, Liangna Guo, Jieting Li, Jieting Li, Jieting Li, Jieting Li, Yibo Zhang, Yibo Zhang, Yibo Zhang, Yibo Zhang, Yuzhuo Liu, Yuzhuo Liu, Yuzhuo Liu, Yuzhuo Liu, Ganggang Chen, Ganggang Chen, Ganggang Chen, Ganggang Chen, Gengxin Zhang   +37 more
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