Results 11 to 20 of about 958,468 (325)

Individual Variation in Parturition Timing within and among Years for a Bat Maternity Colony

open access: yesFrontiers in Bioscience-Scholar, 2023
Background: In monoestrous species, the timing of reproduction can have important impacts on offspring survival. For heterotherms in temperate areas, parturition timing is constrained by cold weather survival strategies, such as hibernation and torpor ...
Julia Sunga   +2 more
doaj   +1 more source

Time-fractional KdV equation: formulation and solution using variational methods [PDF]

open access: yesNonlinear Dynamics, 2010
The paper has been rewritten, 12 pages, 3 ...
El-Wakil, S. A.   +3 more
openaire   +3 more sources

Telomere-to-telomere human DNA replication timing profiles

open access: yesScientific Reports, 2022
The spatiotemporal organization of DNA replication produces a highly robust and reproducible replication timing profile. Sequencing-based methods for assaying replication timing genome-wide have become commonplace, but regions of high repeat content in ...
Dashiell J. Massey, Amnon Koren
doaj   +1 more source

PROBING FOAMY SPACE–TIME WITH VARIATIONAL METHODS [PDF]

open access: yesInternational Journal of Modern Physics A, 1999
A one-loop correction of the quasilocal energy in the Schwarzschild background, with flat space as a reference metric, is performed by means of a variational procedure in the Hamiltonian framework. We examine the graviton sector in momentum space, in the lowest possible state.
openaire   +3 more sources

Systematic and Stochastic Variations in Pulsar Dispersion Measures [PDF]

open access: yes, 2016
We analyze deterministic and random temporal variations in dispersion measure (DM) from the full three-dimensional velocities of pulsars with respect to the solar system, combined with electron-density variations on a wide range of length scales ...
Armstrong, John W.   +5 more
core   +3 more sources

Quantification of left ventricular longitudinal strain, strain rate, velocity and displacement in healthy horses by 2-dimensional speckle tracking [PDF]

open access: yes, 2011
Background: The quantification of equine left ventricular (LV) function is generally limited to short-axis M-mode measurements. However, LV deformation is 3-dimensional (3D) and consists of longitudinal shortening, circumferential shortening, and radial ...
De Clercq, Dominique   +4 more
core   +1 more source

Variability of Interplanetary Shock and Associated Energetic Particle Properties as a Function of the Time Window Around the Shock

open access: yesThe Astrophysical Journal, 2023
We study the effect of sampling windows on derived shock and associated energetic storm particle (ESP) properties in 296 fast-forward interplanetary shocks using Advanced Composition Explorer measurements at 1 au between 1998 February and 2013 August. We
K. Moreland   +5 more
doaj   +1 more source

TOI-199 b: A Well-characterized 100 day Transiting Warm Giant Planet with TTVs Seen from Antarctica

open access: yesThe Astronomical Journal, 2023
We present the spectroscopic confirmation and precise mass measurement of the warm giant planet TOI-199 b. This planet was first identified in TESS photometry and confirmed using ground-based photometry from ASTEP in Antarctica including a full 6.5 hr ...
Melissa J. Hobson   +51 more
doaj   +1 more source

Beyond Biomass: Valuing Genetic Diversity in Natural Resource Management [PDF]

open access: yes, 2020
Strategies for increasing production of goods from working and natural systems have raised concerns that the diversity of species on which these services depend may be eroding. This loss of natural capital threatens to homogenize global food supplies and
Baskett, ML   +3 more
core   +1 more source

A time variational method to couple heterogeneous time integrators

open access: yesEuropean Journal of Computational Mechanics, 2010
This paper is devoted to a brief presentation of recent research results upon structural mechanics code coupling in transient analysis. The domain is supposed to be decomposed into a series of sub domains which are treated independently with their own time integration scheme and or their own code. The paper gives a general method which allows to couple
Alain Combescure   +3 more
openaire   +2 more sources

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