Results 81 to 90 of about 3,443,174 (389)

Root traits of perennial C4 grasses contribute to cultivar variations in soil chemistry and species patterns in particulate and mineral‐associated carbon pool formation

open access: yesGCB Bioenergy, 2023
Recent studies have indicated that the C4 perennial bioenergy crops switchgrass (Panicum virgatum) and big bluestem (Andropogon gerardii) accumulate significant amounts of soil carbon (C) owing to their extensive root systems.
Megan J. Kelly‐Slatten   +5 more
doaj   +1 more source

The Role of Isotope Fractionation Effects in Atmospheric Chemistry

open access: yesZeitschrift für Naturforschung A, 1989
Kinetic isotopic fractionation plays an important role in the quantitative analysis by isotopic studies of the cycles of the two atmospheric trace gases, CO and CH4, which are important because of their impact on the environment. These gases are scavenged from the atmosphere mainly by homogeneous gas phase oxidation reactions with OH radicals.
C. M. Stevens, A. F. Wagner
openaire   +1 more source

Chiral Analysis of Pesticides and Drugs of Environmental Concern: Biodegradation and Enantiomeric Fraction

open access: yesSymmetry, 2017
The importance of stereochemistry for medicinal chemistry and pharmacology is well recognized and the dissimilar behavior of enantiomers is fully documented.
A. Maia   +3 more
semanticscholar   +1 more source

Constraining planet structure and composition from stellar chemistry: trends in different stellar populations [PDF]

open access: yes, 2017
The chemical composition of stars that have orbiting planets provides important clues about the frequency, architecture, and composition of exoplanet systems.
N. Santos   +10 more
semanticscholar   +1 more source

Dynamic wetting and spreading and the role of topography [PDF]

open access: yes, 2009
Hoffman-de Gennes law, which relates the edge speed, ve, to the dynamic and equilibrium contact angles q and qe by ve µq(q2 -qe 2 ). When the liquid wets the surface completely and the equilibrium contact angle vanishes, the edge speed is proportional to
McHale, Glen   +2 more
core   +1 more source

The Caenorhabditis elegans DPF‐3 and human DPP4 have tripeptidyl peptidase activity

open access: yesFEBS Letters, EarlyView.
The dipeptidyl peptidase IV (DPPIV) family comprises serine proteases classically defined by their ability to remove dipeptides from the N‐termini of substrates, a feature that gave the family its name. Here, we report the discovery of a previously unrecognized tripeptidyl peptidase activity in DPPIV family members from two different species.
Aditya Trivedi, Rajani Kanth Gudipati
wiley   +1 more source

Cross-linking of Polystyrene by Friedel–Crafts Chemistry to Improve Thermal Stability [PDF]

open access: yes, 1999
Copolymers which contain either alcohol or chloride functionalized polystyrene units have been prepared and they participate in Friedel–Crafts chemistry to give cross-linked polymers by the evolution of either hydrogen chloride or water.
Jiang, David D.   +3 more
core   +1 more source

High-throughput in-situ characterization and modelling of precipitation kinetics in compositionally graded alloys

open access: yes, 2015
The development of new engineering alloy chemistries is a time consuming and iterative process. A necessary step is characterization of the nano/microstructure to provide a link between the processing and properties of each alloy chemistry considered ...
De Geuser, F.   +3 more
core   +3 more sources

The role and implications of mammalian cellular circadian entrainment

open access: yesFEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

Implications of ideas on super-hydrophobicity for water repellent soil [PDF]

open access: yes, 2007
Water repellence is an important factor in soil erosion due to its role in inhibiting the re-establishment of vegetation after fire and due to its enhancement of run-off.
Adamson   +31 more
core   +1 more source

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