Results 1 to 10 of about 184,134 (119)

Searchlight trapping reveals seasonal cross-ocean migration of fall armyworm over the South China Sea

open access: yesJournal of Integrative Agriculture, 2021
The fall armyworm (FAW), Spodoptera frugiperda, is a migratory noctuid pest that has recently invaded eastern Asia. From 2017 up till 2020, searchlight trapping was used to assess the extent of FAW migration across the South China Sea.
Xian-yong ZHOU   +3 more
doaj   +1 more source

The vanadium isotopic constitution of petroleum asphaltenes: La Luna Formation (Venezuela) [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
High resolution mass spectrometry indicates that the isotopic abundance of 50Vanadium (V) of the Late Cretaceous La Luna petroleum asphaltenes and related source kerogen of marine origin (both highly enriched with V > 2000 ppm) is higher by ...
Premović Pavle I.   +7 more
doaj   +3 more sources

Experimental evidence for extra proton exchange in ribulose 1,5-bisphosphate carboxylase/oxygenase catalysis

open access: yesCommunicative & Integrative Biology, 2022
Despite considerable advances in the past 50 y, the mechanism of ribulose 1,5-bisphosphate carboxylase/oxygenase (Rubisco) catalysis is still not well understood.
Camille Bathellier, Guillaume Tcherkez
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

open access: yesEcology 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   +3 more
doaj   +1 more source

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

open access: yesCiência 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.   +5 more
doaj   +1 more source

Upgrade to the focal-plane detector system of the S800 spectrograph at FRIB [PDF]

open access: yesEPJ Web of Conferences, 2023
The present work describes the ongoing upgrade of the focal-plane detector system and the associated data acquisition system of the large-acceptance S800 magnetic spectrograph.
Cortesi Marco   +8 more
doaj   +1 more source

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

open access: yesApplied 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   +4 more
doaj   +1 more source

Study on behaviors of PO43- in the sediment of the West Lake using isotope trace technique

open access: yes浙江大学学报. 农业与生命科学版, 2002
Under laboratory condition, the technique of the isotope trace was applied to investigate 32P-PO43- behaviors in water/sediments of the West Lake. The results showed that 32P-PO43- in water/sediments declined exponentialy with time.
TANG Meng-cheng
doaj   +1 more source

Nitrogen fixation sensitivity related to water use efficiency at reproductive development in soybean

open access: yesPlant, Soil and Environment, 2020
Soybean [Glycine max (L.) Merr.] nitrogen fixation is sensitive differentially to drought among different genotypes at different growth and development stages, which directly affects soybean yield. Acetylene reduction activity (ARA) response to a gradual
Yan Jiang   +3 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

open access: yesMetabolites, 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   +2 more
doaj   +1 more source

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