Results 21 to 30 of about 731,514 (328)
Unexpectedly large charge radii of neutron-rich calcium isotopes [PDF]
Nature Physics, 2016 Despite being a complex many-body system, the atomic nucleus exhibits simple structures for certain ‘magic’ numbers of protons and neutrons. The calcium chain in particular is both unique and puzzling: evidence of doubly magic features are known in 40 ...
R. Ruiz +30 more
semanticscholar +1 more source
Isotope effect on radiative thermal transport [PDF]
, 2022 Isotope effects on heat conduction and convection have been known for decades. However, whether thermal radiation can be isotopically engineered remains an open question. Here, we predict over 3-orders-of-magnitude variation of radiative heat flow with varying isotopic compositions for polar dielectrics at room temperature. We reveal this as an isotope
arxiv +1 more source
Stable isotopes in precipitation
, 1964 In chapter 2 the isotopic fractionation of water in some simple condensation-evaporation processes are considered quantitatively on the basis of the fractionation factors given in section 1.2. The condensation temperature is an important parameter, which
W. Dansgaard
semanticscholar +1 more source
Chlorine and Bromine Isotope Fractionation of Halogenated Organic Compounds in Electron Ionization Mass Spectrometry [PDF]
Journal of Chromatography A, 2019, 2017 Revelation of chlorine and bromine isotope fractionation of halogenated organic compounds (HOCs) in electron ionization mass spectrometry (EI-MS) is crucial for compound-specific chlorine/bromine isotope analysis (CSIA-Cl/Br) using gas chromatography EI-MS (GC-EI-MS).
arxiv +1 more source
Gels, 2022 This work numerically determined high-energy photon shielding properties of self-healing poly(vinyl alcohol) (PVA) hydrogels containing lead-free, heavy-metal compounds, namely, bismuth oxide (Bi2O3), tungsten oxide (WO3), and barium sulfate (BaSO4 ...
Theerasarn Pianpanit +1 more
doaj +1 more source
Selection of vetiver grass based on growth and nutrient content under saline water irrigation and waterlogging prior to mutagenesis [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2020 The effects of saline water irrigation and waterlogging on the growth and nutrient contents of 19 vetiver ecotypes were investigated. Plant height, tiller number, and dry biomass were recorded at 12 months after planting.
Katarut Chusreeaeom +1 more
doaj +1 more source
Simultaneous observation of concurrent two-dimensional carbon and chlorine/bromine isotope fractionations of halogenated organic compounds on gas chromatography [PDF]
Analytica Chimica Acta, 2018, 1039, 172-182, 2019 It has been reported that isotope fractionation can occur on gas chromatography (GC), yet little is known about concurrent dual-elements isotope fractionations on GC. Revelation of concurrent two-dimensional carbon and chlorine/bromine isotope fractionations of halogenated organic compounds (HOCs) on GC may be of important significance for compound ...
arxiv +1 more source
Cells, 2021 The year 2020 will be carved in the history books—with the proliferation of COVID-19 over the globe and with frontline health workers and basic scientists worldwide diligently fighting to alleviate life-threatening symptoms and curb the spread of the ...
Jihang Yu +3 more
doaj +1 more source
Compound-specific isotope analysis [PDF]
Rapid Communications in Mass Spectrometry 14 (2000) 1337 - 1344, 2007 The isotopic composition, for example, 14C/12C, 13C/12C, 2H/1H, 15N/14N and 18O/16O, of the elements of matter is heterogeneous. It is ruled by physical, chemical and biological mechanisms. Isotopes can be employed to follow the fate of mineral and organic compounds during biogeochemical transformations. The determination of the isotopic composition of
arxiv +1 more source
Preparation and Biodistribution of 99mTc-Pamidronate as Bone Imaging Agent
Journal of Isotopes, 2016 Labeling of Pamidronate (PAM) with 99mTc was studied by a direct labeling method in the presence of SnCl2•2H2O as reducing agent. The influences of the concentration of SnCl2•2H2O, PAM concentration and pH value, reaction time on labeling yield were ...
LUO Hong-yi +3 more
doaj +1 more source