Results 221 to 230 of about 87,402 (268)

Noble Metals in Rocks of the Sarma Group: Phase Composition and Element Associations

Geochemistry International, 2021
The paper presents data on noble-metal mineralization in carbon-bearing rocks of the Sarma Group in the southern flank of the Baikal inlier of the Siberian craton basement. The phase composition of the accessory ore minerals (pyrite, arsenopyrite, microinclusions of native Ni, Sn, Zn, Cu, Fe–Ni and Ni–Fe–Ti composite compounds, Cu and Pb sulfides ...
Yu. V. Danilova, I. E. Vasil’eva, E. V. Shabanova, V. B. Savelyeva, B. S. Danilov   +4 more
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Morphology and Elemental Composition of Subgingival Calculus in Two Ethnic Groups

Journal of Periodontology, 2000
Background: The aim of the present study was to compare the morphology and elemental composition of subgingival calculus between Indo‐Pakistani and Caucasian patient groups.Methods: Extracted teeth from 14 Indo‐Pakistani and 19 Caucasian subjects were collected.
E A, Roberts-Harry, V, Clerehugh, R C, Shore, J, Kirkham, C, Robinson   +4 more
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Elemental and macromolecular composition of the marine Chloropicophyceae, a major group of oceanic photosynthetic picoeukaryotes

Limnology and Oceanography, 2022
AbstractChloropicophyceae (Prasinophyte Clade VII) are small nonmotile coccoid cells with cell diameters ranging from 1 to 3 μm. Molecular surveys indicate they are relatively high in abundance in moderately oligotrophic oceanic waters and may substantively contribute to biogeochemical cycling in the sea.
Vinitha Ebenezer, Yingyu Hu, Olga Carnicer, Andrew J. Irwin, Michael J. Follows, Zoe V. Finkel   +5 more
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Measurement of the Isotopic Composition of the Iron-Group Elements in the Galactic Cosmic Radiation.

Physical Review Letters, 1978
With an average mass resolution of approximately 0.65 amu the isotopic composition of Cr, Mn, Fe, and Ni in the galactic cosmic radiation has been measured for energies of about 300 to 600 MeV/amu at the detector. Large deviations from solar-system source composition reported by other workers are not observed.
G. Tarlé, S. P. Ahlen, B. G. Cartwright
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Hierarchical clustering into groups of human brain regions according to elemental composition

Journal of Radioanalytical and Nuclear Chemistry, 1998
Thirteen brain regions were dissected from both hemispheres of fifteen ‘normal’ ageing subjects (8 females, 7 males) of mean age 79±7 years. Elemental compositions were determined by simultaneous application of particle induced X-ray emissions (PIXE) and Rutherford backscattering (RBS) analyses using a 2 MeV, 4nA proton beam scaned over 4 mm2 of the ...
J. D. Stedman, N. M. Spyrou
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Group Composition as an Element of Social Group Work Practice

Social Service Review, 1969
This article is based on the author's doctoral dissertation, submitted in partial fulfilment of requirements for the D.S.W. degree at the School of Applied Social Sciences, Case Western Reserve University, in 1967. The author is a member of the faculty of the Graduate School of Social Work, Waterloo Lutheran University, Waterloo, Ontario, Canada.
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The number of composite numbers in the set of element ordes of a finite group

Journal of Group Theory, 1998
For a finite group \(G\), denote by \(\pi(G)\) the set of all prime divisors of the order of \(G\) and by \(\psi(G)\) the set of all composite numbers which are the orders of elements in \(G\). The author proves that \(\pi(G)\leq\psi(G)+3\) and if equality holds then \(G\) is simple and all possibilities for \(G\) can be listed. The finite groups \(G\)
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Trace-element composition and zoning in clinopyroxene- and amphibole-group minerals: Implications for element partitioning and evolution of carbonatites

Lithos, 2012
article i nfo The present work is a first comprehensive study of the trace-element composition and zoning in clinopyroxene- and amphibole-group minerals from carbonatites, incorporating samples from 14 localities worldwide (Afrikanda, Aley, Alno, Blue River, Eden Lake, Huayangchuan, Murun, Oka, Ozernaya Varaka, Ozer- nyi, Paint Lake, Pinghe, Prairie ...
Ekaterina P. Reguir, Anton R. Chakhmouradian, Laura Pisiak, Norman M. Halden, Panseok Yang, Cheng Xu, Jindřich Kynický, Chris G. Couëslan   +7 more
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On Composition Factors of Finite Groups Having the Same Set of Element Orders as the Group U3(q)

Siberian Mathematical Journal, 2002
For a finite group \(G\) denote by \(\omega(G)\) the set of its element orders. The article continues the study of finite groups \(G\) such that \(\omega(G)=\omega(U_3(q))\). \textit{V.~D.~Mazurov, M.~C.~Xu}, and \textit{H.~P.~Cao} [Algebra Logika 39, No. 5, 567-585 (2000; Zbl 0979.20019)] proved that, if \(q\) is even, the above condition forces \(G\)
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Sorption Behaviour of I to V Group Elements on a Nickel Hexacyanoferrate(II) Composite Ion Exchanger

ract, 1994
This article deals with the accentuation of English phonetic units in a musical context. We aim to establish some relationships between word-stress pattern and melodic interval for the perception of English. The results of a perceptive test, using a voice synthesised by Mbrola, have enabled us to refute the null hypothesis which implies that the ...
Szeglovski, Z., Contanstinescu, O., Hussonnois, M.   +2 more
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