Results 21 to 30 of about 461,365 (301)

The Isotopic Composition of Solar Energetic Particles [PDF]

open access: yes, 2000
Since the launch of ACE in August 1997, the Solar Isotope Spectrometer (SIS) has observed 11 large solar particle events in which elemental and isotopic composition was determined over a large energy range. The composition of these events has raised many
Christian, E. R.   +8 more
core   +1 more source

Considerations on the biochemical composition of some freshwater zooplankton species.

open access: yesJournal of Limnology, 1999
The mean elemental (C, H, N) and biochemical composition (lipids, carbohydrates and proteins) of some abundant crustacean zooplankton species of Italian insubric lakes has been estimated by the analysis of samples collected at different seasons from ...
Nicoletta RICCARDI, Monica MANGONI
doaj   +1 more source

Environmental controls on the elemental composition of a Southern Hemisphere strain of the coccolithophore Emiliania huxleyi [PDF]

open access: yesBiogeosciences, 2018
A series of semi-continuous incubation experiments were conducted with the coccolithophore Emiliania huxleyi strain NIWA1108 (Southern Ocean isolate) to examine the effects of five environmental drivers (nitrate and phosphate concentrations ...
Y. Feng   +11 more
doaj   +1 more source

On the Base Composition of Transposable Elements

open access: yesInternational Journal of Molecular Sciences, 2022
Transposable elements exhibit a base composition that is often different from the genomic average and from hosts’ genes. The most common compositional bias is towards Adenosine and Thymine, although this bias is not universal, and elements with drastically different base composition can coexist within the same genome.
openaire   +2 more sources

Interactions between Thermal Acclimation, Growth Rate, and Phylogeny Influence Prochlorococcus Elemental Stoichiometry. [PDF]

open access: yesPLoS ONE, 2016
Variability in plankton elemental requirements can be important for global ocean biogeochemistry but we currently have a limited understanding of how ocean temperature influences the plankton C/N/P ratio.
Adam C Martiny   +4 more
doaj   +1 more source

Obtaining Multicomponent Coatings of a Stable Composition for Electromagnetic Radiation Screens

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2023
The formation processes of coatings of Cu–Ni and Ag–Cu systems with a stable elemental composition by the method of electron-beam evaporation are considered.
V. A. Zelenin   +2 more
doaj   +1 more source

Directly comparing coronal and solar wind elemental fractionation

open access: yes, 2020
As the solar wind propagates through the heliosphere, dynamical processes irreversibly erase the signatures of the near-Sun heating and acceleration processes. The elemental fractionation of the solar wind should not change during transit however, making
Baker, D.   +3 more
core   +1 more source

Chemical divergence of the Juglans Regia L. across districts Swat and Dir, Khyber Pakhtunkhwa, Pakistan [PDF]

open access: yesBrazilian Journal of Biology, 2022
Juglans regia L. are nutritious fruit bearing plants mostly found in Northern areas of Pakistan. The population of walnuts was explored from district Dir and Swat Khyber Pakhtunkhwa, Pakistan for their geographical, climatic and chemical divergence.
M. Kamil   +6 more
doaj   +1 more source

Quantifying physiological influences on otolith microchemistry [PDF]

open access: yes, 2015
Trace element concentrations in fish earstones (‘otoliths’) are widely used to discriminate spatially discrete populations or individuals of marine fish, based on a commonly held assumption that physiological influences on otolith composition are minor ...
Hunter, Ewan   +5 more
core   +1 more source

Elemental vs. phase composition of breast calcifications

open access: yesScientific Reports, 2017
Despite the importance of calcifications in early detection of breast cancer, and their suggested role in modulating breast cancer cell behaviour, very little detail is known about their chemical composition or how this relates to pathology.
Robert Scott   +3 more
doaj   +1 more source

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