Results 11 to 20 of about 912,361 (332)

On isotopisms and strong isotopisms of commutative presemifields [PDF]

Journal of Algebraic Combinatorics, 2011
In this paper we prove that the $P(q,\ell)$ ($q$ odd prime power and $\ell>1$ odd) commutative semifields constructed by Bierbrauer in \cite{BierbrauerSub} are isotopic to some commutative presemifields constructed by Budaghyan and Helleseth in \cite{BuHe2008}.
MARINO, Giuseppe, POLVERINO, Olga
openaire   +5 more sources

Potential use of winter green manure species for nitrogen recycling by ‘Niagara Rosada’ grapevines [PDF]

Ciência e Técnica Vitivinícola, 2014
Green manures have become an important option for recycling nutrients in organic cropping. However, its benefits are often not obtained in the short term.
Reis Júnior João R., Botelho Renato V., Trevizam Anderson R., Müller Marcelo M. L., Bendassolli José A., Rombolà Adamo D.   +5 more
doaj   +1 more source

Source identification of methane in groundwater in shale gas development areas: A critical review of the state of the art, prospects, and future challenges

Journal of Groundwater Science and Engineering, 2021
Shale gas exploration and development carry the risk of causing groundwater contamination and enhancing the greenhouse effect through methane leakage. Identifying the source of abnormal methane in groundwater of shale gas development areas is becoming a ...
Zhao-xian Zheng, Ling-xia Liu, Xiao-shun Cui   +2 more
doaj   +1 more source

Evaluation of GC/MS-Based ¹³C-Positional Approaches for TMS Derivatives of Organic and Amino Acids and Application to Plant ¹³C-Labeled Experiments

Metabolites, 2023
Analysis of plant metabolite 13C-enrichments with gas-chromatography mass spectrometry (GC/MS) has gained interest recently. By combining multiple fragments of a trimethylsilyl (TMS) derivative, 13C-positional enrichments can be calculated. However, this
Younès Dellero, Olivier Filangi, Alain Bouchereau   +2 more
doaj   +1 more source

Chlorine isotope composition in chlorofluorocarbons CFC-11, CFC-12 and CFC-113 in firn, stratospheric and tropospheric air [PDF]

, 2014
The stratospheric degradation of chlorofluorocarbons (CFCs) releases chlorine, which is a major contributor to the destruction of stratospheric ozone (O3).
Allin, S. J., Blunier, T., Capron, E., Dennis, P., Fraser, P. J., Kaiser, J., Langenfelds, R. L., Laube, J. C., Martinerie, P., Mckenna, E., Mulvaney, R., Röckmann, T., Schwander, J., Sturges, W. T., Witrant, E.   +14 more
core   +11 more sources

Assessment of groundwater quality in hard rock aquifer of central Telangana state for drinking and agriculture purposes

Applied Water Science, 2018
Quality assessment of groundwater for drinking and irrigation was evaluated in parts of Nalgonda district of Telangana state, India. The overall groundwater quality and the suitability to drinking and irrigation were evaluated by hydrochemical analysis ...
Annadasankar Roy, Tirumalesh Keesari, Hemant Mohokar, Uday Kumar Sinha, Sadasiva Bitra   +4 more
doaj   +1 more source

Effects of spawning Pacific salmon on terrestrial invertebrates: Insects near spawning habitat are isotopically enriched with nitrogen‐15 but display no differences in body size

Ecology and Evolution, 2021
When Pacific salmon (Oncorhynchus spp.) spawn and die, they deliver marine‐derived nutrient subsidies to freshwater and riparian ecosystems. These subsidies can alter the behavior, productivity, and abundance of recipient species and their habitats ...
Nicola F. Rammell, Allison M. Dennert, Christopher M. Ernst, John D. Reynolds   +3 more
doaj   +1 more source

The mechanism of oxygen isotope fractionation during N2O production by denitrification [PDF]

, 2015
The isotopic composition of soil-derived N2O can help differentiate between N2O production pathways and estimate the fraction of N2O reduced to N2. Until now, δ18O of N2O has been rarely used in the interpretation of N2O isotopic signatures because of ...
Augustin, Jürgen, Dyckmans, Jens, Kaiser, Jan, Lewicka-Szczebak, Dominika, Marca, Alina, Well, Reinhard   +5 more
core   +1 more source

Small differences in root distributions allow resource niche partitioning

Ecology and Evolution, 2020
Deep roots have long been thought to allow trees to coexist with shallow‐rooted grasses. However, data demonstrating how root distributions affect water uptake and niche partitioning are uncommon.
Andrew Kulmatiski, Karen H. Beard, Martin C. Holdrege, Edmund C. February   +3 more
doaj   +1 more source

Oxygen isotope fractionation during N2O production by soil denitrification [PDF]

, 2016
The isotopic composition of soil-derived N2O can help differentiate between N2O production pathways and estimate the fraction of N2O reduced to N2. Until now, δ18O of N2O has been rarely used in the interpretation of N2O isotopic signatures because of ...
Augustin, Jürgen, Dyckmans, Jens, Kaiser, Jan, Lewicka-Szczebak, Dominika, Marca, Alina, Well, Reinhard   +5 more
core   +2 more sources