Results 21 to 30 of about 912,361 (332)
Nitrogen fixation sensitivity related to water use efficiency at reproductive development in soybean
Plant, 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
Stable oxygen and carbon isotope compositional fields for skeletal and diagenetic components in New Zealand Cenozoic nontropical carbonate sediments and limestones: a synthesis and review [PDF]
, 1996 The stable oxygen isotope composition (d¹⁸O) of a precipitated carbonate depends mainly on the isotope composition, salinity, and temperature of the host fluid, whereas the stable carbon isotope composition (d¹³C) reflects the source of CO2 for ...
Nelson, Campbell S., Smith, Abigail M.
core +2 more sources
The oxygen isotope effect on critical temperature in superconducting copper oxides [PDF]
, 2004 The isotope effect provided a crucial key to the development of the BCS (Bardeen-Cooper-Schrieffer) microscopic theory of superconductivity for conventional superconductors.
A Mourachkine +8 more
core +1 more source
International Journal of Speleology, 2017 Southern Iran hosts abundant salt karst phenomena in numerous salt diapirs. This paper provides a new insight into the relationships among climate, cap soil and salt karst hydrogeology. Cave systems were documented and mapped.
Jiri Bruthans +4 more
doaj +1 more source
Nature versus nurture? Consequences of short captivity in early stages
Ecology and Evolution, 2018 Biological changes occurring as a consequence of domestication and/or captivity are not still deeply known. In Atlantic salmon (Salmo salar), endangered (Southern Europe) populations are enhanced by supportive breeding, which involves only 6 months of ...
Jose L. Horreo +5 more
doaj +1 more source
High-Resolution in vivo Imaging of Xylem-Transported CO2 in Leaves Based on Real-Time 11C-Tracing
Frontiers in Forests and Global Change, 2019 Plant studies using the short-lived isotope 11C to label photosynthate via atmospheric carbon dioxide (CO2), have greatly advanced our knowledge about the allocation of recent photosynthate from leaves to sinks.
Michiel Hubeau +11 more
doaj +1 more source
Frontiers in Earth Science, 2021 The fluctuating climatic conditions of the Saharo-Arabian deserts are increasingly linked to human evolutionary events and societal developments. On orbital timescales, the African and Indian Summer Monsoons were displaced northward and increased ...
Samuel Luke Nicholson +3 more
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Homomolecular and Isotopic Exchange Reactions by Catalyst
Journal of Isotopes, 2016 It is widely used in the light-isotopes enrichment by distillation, such as H2, O2, N2, CO, etc. It can not get high abundance of isotopes in the late stage of enrichment for these two-atom include two isotopes, and it needs to add a reaction conversion ...
LONG Lei, LI Hu-lin, ZHOU Jian-yue
doaj +1 more source
The First 10 Million Years of Rear‐Arc Magmas Following Backarc Basin Formation Behind the Izu Arc
Geochemistry, Geophysics, Geosystems, 2020 IODP Site U1437 is located in the Izu rear‐arc region, approximately 330 km west of the Izu‐Bonin trench axis. The oldest four units (Units IV through Unit VII) include volcaniclastic sediment and in situ hyaloclastites.
T. Miyazaki +10 more
doaj +1 more source
Synthesis and Characterization of Thymine-15N2
Journal of Isotopes, 2016 A novel and mild synthesis method of thymine-15N2 was designed. Ethyl formate and ethyl propionate as raw materials, the intermediate ethyl 2-formylpropionate was condensed under sodium metal, the target compound thymine-15N2 was obtained by condensation
XU Jian-fei +3 more
doaj +1 more source