Results 91 to 100 of about 2,160,574 (295)

Applicability of Modified Effective-Range Theory to positron-atom and positron-molecule scattering [PDF]

open access: yes, 2006
We analyze low-energy scattering of positrons on Ar atoms and N2 molecules using Modified Effective-Range Theory (MERT) developped by O'Malley, Spruch and Rosenberg [Journal of Math. Phys. 2, 491 (1961)].
A. Erdélyi   +9 more
core   +2 more sources

Are fish outside their usual ranges early indicators of climate‐driven range shifts? [PDF]

open access: yesGlobal Change Biology, 2017
AbstractShifts in species ranges are a global phenomenon, well known to occur in response to a changing climate. New species arriving in an area may become pest species, modify ecosystem structure, or represent challenges or opportunities for fisheries and recreation.
Hannah E. Fogarty   +4 more
openaire   +4 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

Range and Elevational Shifts of Mistletoes Under Future Climate Change Scenarios

open access: yesEcology and Evolution
Climate change is reshaping species' geographic distributions, with range shifts to higher elevations and latitudes. Parasitic plants like keystone mistletoes are particularly vulnerable to climate change because of their obligate dependence on host ...
Antonio Acini Vásquez‐Aguilar   +4 more
doaj   +1 more source

The Impact of Climate and Land Use Change on Greek Centipede Biodiversity and Conservation

open access: yesLand
Centipedes (Chilopoda, Myriapoda) are crucial soil predators, yet their vulnerability to climate and land use change remains unexplored. We assess the impact of these drivers on Greek centipedes, identify current and future biodiversity hotspots, and ...
Elisavet Georgopoulou   +2 more
doaj   +1 more source

From Points to Forecasts: Predicting Invasive Species Habitat Suitability in the Near Term

open access: yesDiversity, 2010
We used near-term climate scenarios for the continental United States, to model 12 invasive plants species. We created three potential habitat suitability models for each species using maximum entropy modeling: (1) current; (2) 2020; and (3) 2035.
Tracy R. Holcombe   +2 more
doaj   +1 more source

A study of nitride devices for computer memory applications [PDF]

open access: yes, 1971
Metal-nitride-oxide-silicon /MNOS/ capacitors act like metal-nitride-silicon /MNS/ capacitors with extra interface where sheet of charge can be stored in slow states.
Raburn, W. D.
core   +1 more source

Nucleon-Nucleon Scattering in a Harmonic Potential

open access: yes, 2010
The discrete energy-eigenvalues of two nucleons interacting with a finite-range nuclear force and confined to a harmonic potential are used to numerically reconstruct the free-space scattering phase shifts.
Achim Schwenk   +5 more
core   +2 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

The Short Range Mechanism of N-N interaction in the Extended Chiral SU(3) Quark Model [PDF]

open access: yes, 2004
We give the comparisons between the chiral SU(3) quark model and the extended chiral SU(3) quark model. The results show that the phase shifts of NN scattering are very similar.
Dai, L. R., Yu, Y. W., Zhang, Z. Y.
core   +2 more sources

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