Results 1 to 10 of about 731,514 (328)
The Isotopes of Antimony [PDF]
Nature, 1922 OWING to the kindness of Prof. G. T. Morgan, who prepared a specimen of pure antimony trimethyl for this purpose, I have now been able to obtain the mass-spectrum of antimony. The element is characterised by two lines of nearly equal strength at 121, 123. The first is the more intense by perhaps 10 to 20 per cent.
F. W. Aston
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Astronomische Nachrichten, 2014 AbstractThe measurement of isotopic ratios provides a privileged insight both into nucleosynthesis and into the mechanisms operating in stellar envelopes, such as gravitational settling. In this article, we give a few examples of how isotopic ratios can be determined from high‐resolution, high‐quality stellar spectra.
Caffau, E. +6 more
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On isotopisms and strong isotopisms of commutative presemifields [PDF]
Journal of Algebraic Combinatorics, 2011 In this paper we prove that the $P(q,\ell)$ ($q$ odd prime power and $\ell>1$ odd) commutative semifields constructed by Bierbrauer in \cite{BierbrauerSub} are isotopic to some commutative presemifields constructed by Budaghyan and Helleseth in \cite{BuHe2008}.
MARINO, Giuseppe, POLVERINO, Olga
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The Isotopes of Americium [PDF]
Physical Review, 1950 Three new americium activities (Am{sup 238}?, Am{sup 243}, and Am{sup 244?}, the latter two formed by n,{gamma} reactions) are described and some additional information is given on previously reported americium isotopes.
Street, K, Jr., Ghiorso, A, Seaborg, G T
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ISOTOPICS – ISOTOPIC LABELING FOR DRUG INNOVATION – H2020 [PDF]
Impact, 2017 ISOTOPICS (H2020 - Marie Sklodowska-Curie Actions - Innovative Training Network; grant number 675071) combines researchers and industry in an innovative effort to de-risk drug development, create new tools for medicine and train first-class radiochemists with dual academic-industrial expertise.
Dugave, Christophe, Hinsinger, Karen
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From stable isotope ecology to forensic isotope ecology — Isotopes’ tales [PDF]
Forensic Science International, 2019 Stable isotope ecology and forensic isotope ecology are not only linked by name. More often than not, knowledge and insights gained through the former serve as a springboard for application focused work of the latter. This review aims to offer a glimpse into the fascinating world of both though with more emphasis on forensic isotope ecology.
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Isotope Effect and Isotope Separation
Nippon kagaku zassi, 1968 同位体物質の換算分配関数比の値を, 量子統計論に基づき, 分子振動スペクトルからの知見を用いて算定した。これらの結果は同位体分離の研究に一つの基礎を与える。同位体物質が二相に分配するとき, 化学反応が同位体の分離効果にどのような影響をおよぼすかについて理論的な考察(二相分配理論) を行なった。導出された基礎式から, どのような系がもっとも分離効果が大きいかを知ることができる。二三の簡単な系について, この理論を展開した。さらにイオン交換樹脂を用いて, 実際にリチウム, 窒素, 銅, ウラン同位体の分離実験を行ない, 相分配理論によって解析を試みた。
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The Separation of Isotopes [PDF]
Nature, 1920 IN view of recent work by Ashton, the practical aspect of this problem again becomes important. Considerable weight must be given to the conception of Lindemann and Ashton (Phil. Mag., May, 1919) that isotopes are capable of chemical as well as of physical separation.
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Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1986 The needs of the research community for the production of transuranium isotopes, the quantities required, the continuity of production desired, and what a new steady state neutron source would have to provide to satisfy these needs are discussed. Examples of past frontier research which need these isotopes as well as an outline of the proposed Large ...
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