Results 71 to 80 of about 2,467 (177)

Controls on Sr/Ca, S/Ca, and Mg/Ca in Benthic Foraminifera: Implications for the Carbonate Chemistry of the Pacific Ocean Over the Last 350 ky

open access: yesGeochemistry, Geophysics, Geosystems
Boron to calcium (B/Ca) records in benthic foraminifera, used for reconstructing the carbonate ion saturation state (ΔCO3) of the deep ocean, suggest that carbon sequestration in the Southern Pacific contributed to lowering atmospheric CO2 during the ...
V. J. Lawson   +8 more
doaj   +1 more source

The lipid-soluble vitamins contents of some Vicia L. species by using HPLC

open access: yesInternational Journal of Secondary Metabolite, 2019
: In the present study, lipid-soluble vitamin compositions in the seeds of the Vicia L. taxa (V. ervilia (L.) Willd., V. cuspidata Boiss., V. peregrina L., V. cracca L. subsp. stenophylla Gaudin, V. mollis Boiss.& Hausskn., V. hybrida L., V. sativa L.
İrfan Emre   +4 more
doaj   +1 more source

Sowing date and seeding rate influence cereal rye productivity across the Northeastern United States

open access: yesAgronomy Journal, Volume 118, Issue 2, March/April 2026.
Abstract Improving the management of cereal rye (Secale cereale L.), the most frequently used cover crop in the United States, provides an opportunity to enhance agroecosystem service provisioning. Services such as erosion control, weed suppression, and nitrate leaching mitigation are correlated with cereal rye ground cover and biomass, which decline ...
Laurel Wellman   +16 more
wiley   +1 more source

Flourensia fiebrigii (Asterales: Asteraceae), fuente de metabolitos antipatogénicos

open access: yesLilloa, 2011
Verni, Cecilia; Alva, Mariana; Muruaga, Nora; Borkosky, Susana; Car tagena, Elena; Bardón, Alicia. 2011. “Flourensia fiebrigii (Asterales: Asteraceae), fuente de metabolitos antipatogénicos”. Lilloa 48 (1).
Cecilia Verni   +5 more
doaj  

Microplastic–metal–microbiota interactions in the flesh fly Boettcherisca peregrina larvae reared on contaminated livestock manure

open access: yesEcotoxicology and Environmental Safety
Microplastics in livestock manure pose a growing environmental concern, which could possibly enhance the bioavailability of heavy metals to flesh fly, such as the Boettcherisca peregrina, a candidate biological agent for manure valorization.
Guanjie Yan   +7 more
doaj   +1 more source

Structure-Molluscicidal Activity Relationships of Acylphloroglucinols from Ferns

open access: yesNatural Product Communications, 2011
The molluscicidal activity of 12 phloroglucinol derivatives previously isolated from Elaphoglossum piloselloides, E. gayanum, E. yungense , and E.
Cecilia Socolsky   +2 more
doaj   +1 more source

Lanthionine Peptides by S-Alkylation with Substituted Cyclic Sulfamidates Promoted by Activated Molecular Sieves: Effects of the Sulfamidate Structure on the Yield [PDF]

open access: yes, 2019
A green and efficient method for preparing lanthionine peptides by a highly chemoselective and stereochemically controlled procedure is presented. It involves an S-alkylation reaction, promoted by activated molecular sieves, on chiral cyclic sulfamidates,
Stefania De Luca   +11 more
core   +1 more source

ABSORÇÃO DE NUTRIENTES EM ESPÉCIES FLORESTAIS, SOB INFLUÊNCIA DA ADUBAÇÃO POTÁSSICA

open access: yesRevista do Instituto Florestal, 1996
Em experimento conduzido em condições de casa de vegetação, de janeiro a abril de 1995, estudou-se a influência da adubação potássica sobre a absorção de nutrientes em quatorze espécies florestais de diferentes grupos ecológicos e no milho, Um solo com ...
Ivo Ribeiro da Silva   +3 more
doaj   +1 more source

Geographical distribution of Biomphalaria snails in the State of Minas Gerais, Brazil

open access: yesMemorias do Instituto Oswaldo Cruz, 2001
Published and unpublished observations on geographical distribution of Biomphalaria snails in the State of Minas Gerais, Brazil, were compiled.
Souza Cecília Pereira de   +6 more
doaj  

Mollusks (Gastropoda and Bivalvia) of the Multiple-Use Reserve Martín García Island, Río de la Plata River: biodiversity and ecology Moluscos (Gastropoda e Bivalvia) da Reserva Natural de Usos Múltiplos Ilha Martín García, Rio de La Plata: biodiversidade e ecologia

open access: yesBrazilian Journal of Biology, 2012
The Island of Martin Garcia is located in the Upper Río de la Plata, to the south of mouth the Uruguay River. The aim of the present study was to analyse the biodiversity of the island freshwater mollusks and their relationships to environmental ...
II César, SM Martín, A Rumi, M Tassara
doaj   +1 more source

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