Results 61 to 70 of about 163,369 (269)

Combining stable isotope ratios with elemental concentrations to improve the estimation of terrestrial carnivore diets

open access: yesGlobal Ecology and Conservation, 2023
Stable isotopes of animal tissue have been used to estimate diet for many consumer species and places, but the ability to assign contributions to all food items is limited by the number of tracers used, and the separation of the tracer data among the ...
Garth Mowat   +2 more
doaj   +1 more source

The beta strength function structure in \beta + decay of lutecium, thulium and cesium isotopes

open access: yes, 1981
The spectra of total gamma -absorption in the decays of some lutetium, thulium and cesium isotopes have been measured. The probabilities for level population in the decay of the isotopes have been determined.
Bykov, A A   +4 more
core   +1 more source

ONLINE NUCLEAR ORIENTATION OF CESIUM ISOTOPES AND THE MAGNETIC-MOMENT OF CS-118M [PDF]

open access: yes, 1987
Cesium isotopes have been oriented in iron, following on-line implantation at temperatures down to 8 mK. Analysis of results on transitions in the decay of Csm119, Csg120, and Csm121 yields the hyperfine field Bhf(CsFe)=(+)40.8(7) T.
STONE, N   +20 more
core   +1 more source

Cobalt‐Catalyzed Asymmetric Construction of Boron Stereocenters With C–N Axial Chirality

open access: yesAdvanced Science, EarlyView.
A cobalt/Salox‐catalyzed one‐pot annulation enables enantioselective formation of B‐stereogenic centers and C─N axial chirality via C─H/N─H annulation, affording diverse fluorescent products with high stereocontrol and optoelectronic potential. ABSTRACT The efficient construction of boron stereogenic centers alongside axial chirality remains a ...
Subramani Kumaran   +5 more
wiley   +1 more source

Introducing a Precise System for Determining Volume Percentages Independent of Scale Thickness and Type of Flow Regime

open access: yesMathematics, 2022
When fluids flow into the pipes, the materials in them cause deposits to form inside the pipes over time, which is a threat to the efficiency of the equipment and their depreciation.
Abdulilah Mohammad Mayet   +7 more
doaj   +1 more source

Solvent‐Free Synthesis of Ultrabright Carbon Dots With Near‐Unity Quantum Yield for High‐Performance Light‐Emitting Diodes

open access: yesAdvanced Science, EarlyView.
A rational, solvent‐free synthesis utilizing 2,6‐diaminonaphthalene produces ultrabright green‐emissive carbon dots. Regulated by a self‐limiting oxidative capping mechanism, excitons undergo ultrafast intra‐particle funneling from the nitrogen‐doped carbon core to emissive surface traps.
Hyeonjin Park   +8 more
wiley   +1 more source

Short-term dispersal of Fukushima-derived radionuclides off Japan: modeling efforts and model-data intercomparison [PDF]

open access: yesBiogeosciences, 2013
The Great East Japan Earthquake and tsunami that caused a loss of power at the Fukushima nuclear power plants (FNPP) resulted in emission of radioactive isotopes into the atmosphere and the ocean.
I. I. Rypina   +5 more
doaj   +1 more source

Radioactivity assessment of selected samples of foodstuffs in the local market

open access: yesTikrit Journal of Pure Science, 2022
The research aims to evaluate the radioactivity of samples of foodstuffs Consumables  in the local  markets thirteen items were selected which are rice, tea, drinking water, lentils, chickpeas, flour, red bean, crushed chickpeas and milk powder  where ...
Esam S. Ali   +2 more
doaj   +1 more source

Osmium Nanoparticle Anchoring on CoFe Layered Double Hydroxides Enables High‐Valent Species Stabilization and Efficient Seawater Oxygen Evolution

open access: yesAdvanced Science, EarlyView.
Osmium nanoparticles anchored on CoFe layered double hydroxide (Os/CoFe LDH) stabilize high‐valent Co/Fe species and modulate the interfacial water configuration via surface engineering. This work presents a facile surface engineering strategy for constructing efficient and durable OER electrocatalysts for alkaline seawater, and expands the ...
Xindong She   +8 more
wiley   +1 more source

Radiological assessment of radionuclide contents in soils in Lower Silesian Voivodeship in the years 1988-2014

open access: yesE3S Web of Conferences, 2018
. In 1986, the Chernobyl disaster provoked the uncontrolled release of significant amounts of radioactive substances, which caused surface contamination in Poland through radioactive isotopes.
Łukaszek-Chmielewska Aneta   +4 more
doaj   +1 more source

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