Results 41 to 50 of about 890,822 (305)

Asymmetric drag in oscillatory motion: Ratchet effect without an asymmetric potential

Physical Review E, 2013
Asymmetry of magnetic objects in a fluid under an oscillating magnetic field leads to a wealth of nonequilibrium dynamics phenomena including a novel ratchet effect without an asymmetric substrate. These nonlinear dynamics are explained in the framework of the Stokes' model by a drag coefficient, which depends on the direction of motion.
V. M. Fomin, E. J. Smith, D. D. Karnaushenko, D. Makarov, O. G. Schmidt   +4 more
openaire   +2 more sources

Investigating Macro Drivers of the Total Stock Market Index with a Non-linear Approach in the Form of a Threshold Regression Model [PDF]

راهبرد مدیریت مالی
The total index of the Tehran Stock Exchange has accepted different and asymmetric effects from a driving factor in different periods, therefore, the study of factors affecting the total index of the Tehran Stock Exchange with a linear approach will not ...
Ehsan Zanganeh
doaj   +1 more source

Spin-Polarized Electron Transport through Nanometer-Scale Al Grains

, 2005
We investigate spin-polarized electron tunnelling through ensembles of nanometer scale Al grains embedded between two Co-reservoirs at 4.2K, and observe tunnelling-magnetoresistance (TMR) and effects from spin-precession in the perpendicular applied ...
A. Hubert, C. Y. Wang, D. Davidović, D. V. Averin, J. M. Elzerman, L. Y. Zhang, X. Y. Liu, Y. G. Wei   +7 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

THE ASYMMETRIC EFFECTS OF INVESTOR SENTIMENT [PDF]

Macroeconomic Dynamics, 2015
We use the returns on lottery-like stocks and a dynamic factor model to construct a novel index of investor sentiment. This new measure is highly correlated with other behavioral indicators, but more closely tracks speculative episodes. Our main new finding is that the effects of sentiment are asymmetric: During peak-to-trough periods of investor ...
openaire   +3 more sources

Ram-Ppressure Effects on Dense Molecular Arms in the Central Regions of Spiral Galaxies by Intracluster Medium [PDF]

, 2002
We investigated ram-pressure effects by an intracluster wind on an inner disk of spiral galaxies by a hydrodynamical simulation. Even if the wind is mild and not strong enough to strip the gas disk, the ram pressure disturbs orbits of the inter-arm gas ...
Hidaka, Makoto, Sofue, Yoshiaki
core   +3 more sources

Do Exchange-Rate Fluctuations Have Asymmetric Impacts on Visegrad–German Sectoral Trade?

Comparative Economic Research
Understanding the determinants of trade flows between countries is of particular interest to policymakers, central bankers, business owners and investors.
Izabela Pruchnicka-Grabias, Scott W. Hegerty   +1 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Asymmetric Effects of Oil Price Shocks on Stock Markets: A NARDL Analysis for Türkiye and Kazakhstan

Economies
This study examines the asymmetric responses of stock market indices in Türkiye and Kazakhstan to oil price shocks during the 2010–2025 period. Using the Nonlinear Autoregressive Distributed Lag (NARDL) model, the study decomposes the nonlinear effects ...
Özkan İmamoğlu
doaj   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source