Results 251 to 260 of about 1,660,917 (306)
Some of the next articles are maybe not open access.

STANDING HUMBLY BEFORE NATURE

Ethics & the Environment, 2002
Humility is a virtue that is helpful in a persons relationship with nature. A humble person sees value in nature and acts accordingly with the proper respect. In this paper, humility is discussed in three aspects. First, humility entails an overcoming of self-absorption. Second, humility involves coming into contact with a larger, more complex reality.
openaire   +1 more source

On the fractal properties of natural human standing

Neuroscience Letters, 2000
We analyzed the temporal evolution of the displacement of the center of pressure (COP) during prolonged unconstrained standing (30 min) in non-impaired human subjects. The COP represents the collective outcome of the postural control system and the force of gravity and is the main parameter used in studies on postural control.
M, Duarte, V M, Zatsiorsky
openaire   +2 more sources

Pruning Natural Pine Stands

Journal of Forestry, 1940
Abstract Time costs for pruning under field conditions, methods used, and observations made during the operations are reported and discussed. Comments on the adaptability and value of the pole saw and other tools are presented.
openaire   +1 more source

Phosphorus status in some natural desert truffle stands

Communications in Soil Science and Plant Analysis, 1998
Abstract Little is known about the phosphorus (P) status of non agricultural soils, although some sites in drylands are potentially important for the production of desert truffles, a mycorrhizal association that may overcome the fertility deficiency. In this work we described the fertility characteristics with special emphasis on the P status of some ...
BONIFACIO, Eleonora   +3 more
openaire   +3 more sources

Timed Floor to Stand-Natural

Pediatric Physical Therapy, 2016
To collect reference data for the Timed Floor to Stand-Natural (TFTS-N) on a large, diverse sample of school children who are typically developing, taking into account age, sex, and body mass index (BMI).Five physical therapists administered the TFTS-N on a sample of convenience of 1476 school children who were typically developing, aged 5 to 14 years (
Goldie, Weingarten   +5 more
openaire   +2 more sources

Changing Stand Structure and Regional Growth Reductions in Georgia's Natural Pine Stands

Forest Science, 1991
Abstract Forest Inventory and Analysis (FIA) data indicate reductions in the growth of naturally regenerated pines in Georgia between the two latest measurement periods (1961-72 vs. 1972-82). Analysis of Covariance was used to adjust stand-level basal area growth rates for differences between periods in stand age, stand density, site ...
W. A. Bechtold, G. A. Ruark, F. T. Lloyd
openaire   +1 more source

Nature's strategies: A plant that stands and fights

Science, 2018
The wild tobacco plant sounds off when it's under attack.
openaire   +2 more sources

Above‐ground standing biomass and tree species diversity in natural stands of Central Europe

Journal of Vegetation Science, 2007
AbstractQuestions: 1.Is the above‐ground biomass in natural temperate forests positively correlated with tree species diversity?2. Is this biomass related to the diversity of tree functional groups?Location: We used published data from over 100 permanent plots located in natural temperate forests in the Czech Republic, Poland and Slovakia.Methods: We
Jerzy Szwagrzyk, Anna Gazda
openaire   +1 more source

Tree Diversity Drives Forest Stand Resistance to Natural Disturbances

Current Forestry Reports, 2017
Forests are frequently exposed to natural disturbances, which are likely to increase with global change, and may jeopardize the delivery of ecosystem services. Mixed-species forests have often been shown to be more productive than monocultures, but it is unclear whether this results from mixed stands being in part more resistant to various biotic and ...
Jactel, Herve   +9 more
openaire   +2 more sources

Experimental evolution reveals natural selection on standing genetic variation

Nature Genetics, 2009
Evolution depends on genetic variation generated by mutation or recombination from standing genetic variation. In sexual organisms, little is known about the molecular population genetics of adaptation and reverse evolution. We carry out 50 generations of experimental reverse evolution in populations of Drosophila melanogaster, previously ...
Teotónio, H   +4 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy