Results 1 to 10 of about 59,690 (299)

Assembly of a marine viral metagenome after physical fractionation. [PDF]

open access: yesPLoS ONE, 2013
Metagenomic analyses of marine viruses generate an overview of viral genes present in a sample, but the percentage of the resulting sequence fragments that can be reassembled is low and the phenotype of the virus from which a given sequence derives is ...
Jennifer R Brum   +2 more
doaj   +4 more sources

Density fractions versus size separates: does physical fractionation isolate functional soil compartments? [PDF]

open access: yesBiogeosciences, 2012
Physical fractionation is a widely used methodology to study soil organic matter (SOM) dynamics, but concerns have been raised that the available fractionation methods do not well describe functional SOM pools.
C. Moni   +4 more
doaj   +3 more sources

How biased is size fractionation derived mineral-associated organic carbon? [PDF]

open access: yesGeoderma
Mineral-associated organic carbon (MAOC) is regarded as the more persistent soil organic carbon (SOC) as opposed to the more fast-cycling particulate organic carbon (POC).
Christopher Poeplau   +2 more
doaj   +2 more sources

A Comparison of Physical Soil Organic Matter Fractionation Methods for Amended Soils [PDF]

open access: yesApplied and Environmental Soil Science, 2019
Selecting a suitable physical fractionation method, to investigate soil organic matter dynamics, from the plethora that are available is a difficult task.
Sarah Duddigan   +3 more
doaj   +2 more sources

Crystal Fractionation by Crystal‐Driven Convection [PDF]

open access: yesGeophysical Research Letters, 2020
Fractional crystallization is an essential process proposed to explain worldwide compositional abundances of igneous rocks. It requires crystals to precipitate from the melt and segregate from its residual melt, or experience crystal fractionation.
Cansu Culha   +3 more
doaj   +2 more sources

Carbon stocks in organic matter fractions as affected by land use and soil management, with emphasis on no-tillage effect [PDF]

open access: yesCiência Rural, 2002
Land use and soil management may affect both labile and humified soil organic matter (SOM) fractions, but the magnitude of these changes is poorly known in subtropical environments.
Cimélio Bayer   +3 more
doaj   +1 more source

Physics of fractional imaging in biomedicine [PDF]

open access: yesProgress in Biophysics and Molecular Biology, 2018
The mathematics of imaging is a growing field of research and is evolving rapidly parallel to evolution in the field of imaging. Imaging, which is a sub-field of biomedical engineering, considers novel approaches to visualize biological tissues with the general goal of improving health.
Ayesha Sohail   +3 more
openaire   +3 more sources

Organic matter fractions within macroaggregates in response to long-term fertilization in calcareous soil after reclamation

open access: yesJournal of Integrative Agriculture, 2021
Soil organic carbon (SOC) plays a key role in improving soil quality and optimizing crop yield. Yet little is known about the fate of macroaggregates (>0.25 mm) under long-term fertilization and their relative importance in SOC sequestration in reclaimed
Han-bing CAO   +5 more
doaj   +1 more source

Fraction ball: Playful and physically active fraction and decimal learning.

open access: yesJournal of Educational Psychology, 2021
This study tested a novel approach to capitalizing on the benefits of play for informal math learning. Two experiments evaluated a platform called “Fraction Ball”, that provides an embodied, playful, and physically active learning experience by modifying the lines on a basketball court to support rational number learning.
Andres S. Bustamante   +4 more
openaire   +2 more sources

Physical weathering by glaciers enhances silicon mobilisation and isotopic fractionation [PDF]

open access: yes, 2021
Glacial meltwaters export substantial quantities of dissolved and dissolvable amorphous silicon (DSi and ASi), providing an essential nutrient for downstream diatoms.
Hendry, K.R.   +23 more
core   +1 more source

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