Results 31 to 40 of about 2,116,335 (302)

Identification of Coulomb blockade and macroscopic quantum tunneling by noise

, 2002
The effects of Macroscopic Quantum Tunneling (MQT) and Coulomb Blockade (CB) in Josephson junctions are of considerable significance both for the manifestations of quantum mechanics on the macroscopic scale and potential technological applications. These
Clarke J., G.-L Ingold, H Grabert, Likharev K. K., Weiss U., Weiss U.   +5 more
core   +2 more sources

Estimating the Lasso's Effective Noise

, 2020
Much of the theory for the lasso in the linear model $Y = X β^* + \varepsilon$ hinges on the quantity $2 \| X^\top \varepsilon \|_{\infty} / n$, which we call the lasso's effective noise. Among other things, the effective noise plays an important role in finite-sample bounds for the lasso, the calibration of the lasso's tuning parameter, and inference ...
Lederer, Johannes, Vogt, Michael
openaire   +3 more sources

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

A multi-method assessment of the regional sensitivities between flight altitude and short-term O3 climate warming from aircraft NO x emissions

Environmental Research Letters
Flight altitude is relevant to the climate effects resulting from aircraft emissions. Other research has shown that flying higher within the troposphere leads to larger warming from O _3 production. Aircraft NO _x emissions are of particular interest, as
Jin Maruhashi, Mariano Mertens, Volker Grewe, Irene C Dedoussi   +3 more
doaj   +1 more source

Finite size effects, super-and sub-poissonian noise in a nanotube connected to leads

, 2007
The injection of electrons in the bulk of carbon nanotube which is connected to ideal Fermi liquid leads is considered. While the presence of the leads gives a cancellation of the noise cross-correlations, the auto-correlation noise has a Fano factor ...
Adeline Crépieux, Alexandre Popoff, D. L. Maslov, I. Safi, L. V. Keldysh, Marine Guigou, R. Egger, Thierry Martin, W. Schottky   +8 more
core   +3 more sources

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

The ozone radiative forcing of nitrogen oxide emissions from aviation can be estimated using a probabilistic approach

Communications Earth & Environment
Reliable prediction of aviation’s environmental impact, including the effect of nitrogen oxides on ozone, is vital for effective mitigation against its contribution to global warming.
Pratik Rao, Richard Dwight, Deepali Singh, Jin Maruhashi, Irene Dedoussi, Volker Grewe, Christine Frömming   +6 more
doaj   +1 more source

Attributing ozone and its precursors to land transport emissions in Europe and Germany [PDF]

Atmospheric Chemistry and Physics, 2020
Land transport is an important emission source of nitrogen oxides, carbon monoxide, and volatile organic compounds. The emissions of nitrogen oxides affect air quality directly.
M. Mertens, A. Kerkweg, A. Kerkweg, V. Grewe, V. Grewe, P. Jöckel, R. Sausen   +6 more
doaj   +1 more source

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

FEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani, Noemi E. Nwosu, Viktoria Gocke, Müge Kasanmascheff, Hannes Mutschler   +4 more
wiley   +1 more source

Are contributions of emissions to ozone a matter of scale? [PDF]

Geoscientific Model Development, 2020
Anthropogenic and natural emissions influence the tropospheric ozone budget, thereby affecting air quality and climate. To study the influence of different emission sources on the ozone budget, often source apportionment studies with a tagged tracer ...
M. Mertens, A. Kerkweg, A. Kerkweg, V. Grewe, V. Grewe, P. Jöckel, R. Sausen   +6 more
doaj   +1 more source