Results 51 to 60 of about 4,184,128 (240)

Cycling chaotic attractors in two models for dynamics with invariant subspaces [PDF]

, 2004
Nonergodic attractors can robustly appear in symmetric systems as structurally stable cycles between saddle-type invariant sets. These saddles may be chaotic giving rise to 'cycling chaos'.
Ashwin, P., Rucklidge, A.M., Sturman, R.
core   +2 more sources

UCP1-independent signaling involving SERCA2b-mediated calcium cycling regulates beige fat thermogenesis and systemic glucose homeostasis

Nature Medicine, 2017
Uncoupling protein 1 (UCP1) plays a central role in nonshivering thermogenesis in brown fat; however, its role in beige fat remains unclear. Here we report a robust UCP1-independent thermogenic mechanism in beige fat that involves enhanced ATP-dependent ...
K. Ikeda, Qianqian Kang, T. Yoneshiro, J. Camporez, Hiroko Maki, M. Homma, Kosaku Shinoda, Yong Chen, Xiaodan Lu, Pema Maretich, Kazuki Tajima, K. Ajuwon, T. Soga, S. Kajimura   +13 more
semanticscholar   +1 more source

Perceptual Cycles

Trends in Cognitive Sciences, 2015
Brain function involves oscillations at various frequencies. This could imply that perception and cognition operate periodically, as a succession of cycles mirroring the underlying oscillations. This age-old notion of discrete perception has resurfaced in recent years, fueled by advances in neuroscientific techniques.
openaire   +4 more sources

Molybdenum isotope fractionations between ferromanganese oxides and seawater influenced ancient sedimentary isotopic signatures

Communications Earth & Environment
The use of molybdenum isotopes (δ98Mo) as a paleo-redox proxy requires quantifications of fluxes and isotopic fractionations in each molybdenum sink.
Mengchun Cao, Guang-Yi Wei, Feifei Zhang, Xiangwen Ren, Xuefa Shi, Yi-Bo Lin, Tao Li, Sihui Chen, Hong-Fei Ling, Jian Cao   +9 more
doaj   +1 more source

Submarine fresh groundwater discharge estimation in the intertidal zone based on dynamic salinity simulation

Shuiwen dizhi gongcheng dizhi
Currently, limited studies focused on the variations in submarine fresh groundwater discharge rates, seawater recirculation rates, and their respective proportions with tidal level change in sandy intertidal zones.
Zhixiu WANG, Yasong LI, Qichen HAO, Yuanjing ZHANG, Yong XIAO, Chunlei LIU   +5 more
doaj   +1 more source

Understanding walking and cycling:summary of key findings and recommendations [PDF]

, 2011
It is widely recognized that there is a need to increase levels of active and sustainable travel in British urban areas. The Understanding Walking and Cycling (UWAC) project, funded by the EPSRC, has examined the factors influencing everyday travel ...
Chisholm, Alison, Constantine, Sheila, Horton, David, Jones, Tim, Jopson, Ann, Mullen, Caroline, Pooley, Colin, Scheldeman, Griet, Strano, Emanuele, Tight, Miles   +9 more
core   +1 more source

Comparison of stimulation patterns for FES-cycling using measures of oxygen cost and stimulation cost [PDF]

, 2006
<b>Aim</b><p></p> The energy efficiency of FES-cycling in spinal cord injured subjects is very much lower than that of normal cycling, and efficiency is dependent upon the parameters of muscle stimulation.
A.N. McLean, B. Stone, Barstow, Barstow, C. Ferrario, D.B. Allan, Eser, Gföhler, Gföhler, Gföhler, Gföhler, Glaser, Glaser, Hunt, Hunt, Idsø, Jang, Janssen, K.J. Hunt, Kjaer, M.H. Fraser, Martin, Mohr, Mohr, Perkins, Petrofsky, Petrofsky, Petrofsky, Petrofsky, Pons, Rasmussen, Raymond, S. Grant, Theisen   +33 more
core   +1 more source

Nitrogen fertilizers technologies as a smart strategy to mitigate nitrous oxide emissions and preserve carbon and nitrogen soil stocks in a coffee crop system

Atmospheric Environment: X, 2023
The paper consolidates the role of conventional and stabilized N fertilizers used in coffee crop production in Brazil and their N2O emissions in tropical systems.
Leonardo Fernandes Sarkis, Mateus Portes Dutra, Camila Almeida dos Santos, Bruno José Rodrigues Alves, Segundo Urquiaga, Douglas Guelfi   +5 more
doaj   +1 more source

Economically Optimal Wheat Yield, Protein and Nitrogen Use Component Responses to Varying N Supply and Genotype

Frontiers in Plant Science, 2020
Improvements in market value of hard red spring wheat (HRS, Triticum aestivum L.) are linked to breeding efforts to increase grain protein concentration (GPC).
William L. Pan, Kimberlee K. Kidwell, Vicki A. McCracken, Ronald P. Bolton, Monica Allen   +4 more
doaj   +1 more source

Cycling Joule Thomson refrigerator [PDF]

, 1983
A symmetrical adsorption pump/compressor system having a pair of mirror image legs and a Joule Thomson expander, or valve, interposed between the legs thereof for providing a, efficient refrigeration cycle is described.
Tward, E.
core   +1 more source