Results 61 to 70 of about 256,786 (320)

Real-Time Contrail Monitoring and Mitigation Using CubeSat Constellations

open access: yesAtmosphere
Contrails, or condensation trails, left by aircraft, significantly contribute to global warming by trapping heat in the Earth’s atmosphere. Despite their critical role in climate dynamics, the environmental impact of contrails remains underexplored. This
Nishanth Pushparaj   +3 more
doaj   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS 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

Sandivanker [PDF]

open access: yesMäetagused, 2010
Suur Vanker (‘the Great Wain’ in Estonian, the Big Dipper) is a commonly known constellation in Estonia. In addition to Suur Vanker, the astronym Hunt Härja kõrval ‘Wolf beside the Ox’ is one of the oldest written recordings of ethno-astronomic ...
Andres Kuperjanov
doaj  

Achievable Rates for Four-Dimensional Coded Modulation with a Bit-Wise Receiver [PDF]

open access: yes, 2013
We study achievable rates for four-dimensional (4D) constellations for spectrally efficient optical systems based on a (suboptimal) bit-wise receiver.
Agrell, Erik, Alvarado, Alex
core   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

The Transition from Alliance Networks to Multilateral Alliances in the Global Airline Industry [PDF]

open access: yesBAR: Brazilian Administration Review, 2008
This study examines conditions in which alliance networks (informal webs of bilateral entanglements between firms) may or may not evolve into multilateral alliances (broad, formal multiple-firm arrangements).
Sergio G. Lazzarini
doaj  

Moduli spaces of (G,h)-constellations

open access: yes, 2017
Given an infinite reductive group G acting on an affine scheme X over C and a Hilbert function h: Irr G \to N_0, we construct the moduli space M_{\theta}(X) of \theta-stable (G,h)-constellations on X, which is a generalization of the invariant Hilbert ...
Becker, Tanja, Terpereau, Ronan
core   +1 more source

A simple model of trees for unicellular maps [PDF]

open access: yes, 2012
We consider unicellular maps, or polygon gluings, of fixed genus. A few years ago the first author gave a recursive bijection transforming unicellular maps into trees, explaining the presence of Catalan numbers in counting formulas for these objects.
Bernardi   +34 more
core   +8 more sources

Constellations of Transdisciplinary Practices: A Map and Research Agenda for the Responsible Management Learning Field

open access: yes, 2020
The emerging field of responsible management learning is characterized by an urgent need for transdisciplinary practices. We conceptualize constellations of transdisciplinary practices by building up on a social practice perspective.
O. Laasch   +3 more
semanticscholar   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

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