Results 51 to 60 of about 182,891 (332)

Dynamics of Mixed Convective--Stably-Stratified Fluids [PDF]

open access: yesL.-A. Couston, D. Lecoanet, B. Favier, and M. Le Bars, 2017, Phys. Rev. Fluids 2, 094804, 2017
We study the dynamical regimes of a density-stratified fluid confined between isothermal no-slip top and bottom boundaries (at temperatures $T_t$ and $T_b$) via direct numerical simulation. The thermal expansion coefficient of the fluid is temperature dependent and chosen such that the fluid density is maximum at the inversion temperature $T_b>T_i>T_t$.
arxiv   +1 more source

The association of cold weather and all-cause and cause-specific mortality in the island of Ireland between 1984 and 2007 [PDF]

open access: yes, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work ...
A Analitis   +47 more
core   +3 more sources

Effect of provenance and chemical treatments on the germination characteristics in immature seed of linden [PDF]

open access: yesمجله جنگل ایران, 2018
One of the problems of propagation of lindens (Tilia spp.) is low seed germination. In this research, different treatments for stimulating the germination in immature seeds of Tilia rubra subsp. caucasica form angulata collected from middle altitude (500
Tabari Masoud   +3 more
doaj  

Exogenous gibberellin can effectively and rapidly break intermediate physiological dormancy of Amsonia elliptica seeds

open access: yesFrontiers in Plant Science, 2022
Accelerated global warming is leading to the loss of plant species diversity, and ex situ preservation of seeds is becoming an increasingly important aspect of species conservation.
Sang Yeob Lee   +15 more
doaj   +1 more source

The upwelling source depth distribution and its response to wind stress and stratification [PDF]

open access: yesarXiv, 2023
Coastal upwelling, driven by alongshore winds and characterized by cold sea surface temperatures and high upper-ocean nutrient content, is an important physical process sustaining some of the oceans' most productive ecosystems. To fully understand the ocean properties in eastern boundary upwelling systems, it is important to consider the depth of the ...
arxiv  

Seed size and cold stratification affect Acer negundo and Acer ginnala seeds germination [PDF]

open access: yes, 2020
The aim of this work is to determine how the germination of seeds of the invasive tree Acer negundo depends on the period of cold stratification under the snow and the duration of stratification in the air on the branches of the trees.
Kiseleva, O.A.   +2 more
core   +1 more source

Dormancy-release and germination improvement of Korean bellflower (Campanula takesimana Nakai), a rare and endemic plant native to the Korean peninsula.

open access: yesPLoS ONE, 2023
Korean bellflower (Campanula takesimana Nakai) is a rare and perennial herb with medicinal and ornamental values, is endemic to the Ulleung Island of Korea.
Hyeon Min Kim   +9 more
doaj   +1 more source

The Phase-Space Density Profiles of Cold Dark Matter Halos [PDF]

open access: yesAstrophys.J. 563 (2001) 483-488, 2001
We examine the coarse-grained phase-space density profiles of a set of recent, high-resolution simulations of galaxy-sized Cold Dark Matter (CDM) halos. Over two and a half decades in radius the phase-space density closely follows a power-law, $\rho/\sigma^3 \propto r^{-\alpha}$, with $\alpha = 1.875$.
arxiv   +1 more source

INFLUENCE OF OVERCOMING DORMANCY METHODS ON MAGNOLIA X SOULANGEANA SOUL. BOD. SEEDS GERMINATION

open access: yesAgricultura, 2010
The goal of the experiments carried out was to analyse the influence of different types of preseeding treatment on the germination and dormancy breaking of Magnolia x soulangeana seeds. Seven types of preseeding treatment were used to break seed dormancy
Marcel Raček   +2 more
doaj   +1 more source

Wakes in stratified flow past a hot or cold two-dimensional body [PDF]

open access: yes, 1976
This paper considers the general problem of laminar, steady, horizontal, Oseen flow at large distances upstream and downstream of a two-dimensional body which is represented as a line source of horizontal or vertical momentum, or as a line heat source or
Leal, L. G.   +2 more
core   +1 more source

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