Results 211 to 220 of about 5,841 (257)
A Correlative X‑ray Bioimaging Triad for Metals in Biomedical Research. [PDF]
Chem Biomed ImagingC Marchi R, Harkiolaki M, Sadler PJ.
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Reports on Progress in Physics, 1970
An account is given of some of the mechanisms which can lead to a transition from a metallic to a nonmetallic state, when a parameter such as the interatomic distance or temperature is varied. The simplest of these is the band overlap or Wilson transition, which occurs when a conduction band overlaps a valence band; this is discussed in § 2 and for ...
N F Mott, Z Zinamon
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An account is given of some of the mechanisms which can lead to a transition from a metallic to a nonmetallic state, when a parameter such as the interatomic distance or temperature is varied. The simplest of these is the band overlap or Wilson transition, which occurs when a conduction band overlaps a valence band; this is discussed in § 2 and for ...
N F Mott, Z Zinamon
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Putting Nonmetals into Fullerenes
ChemInform, 2002AbstractFor Abstract see ChemInform Abstract in Full Text.
Martin Saunders, R. James Cross
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Electronic Polarons in Nonmetals
Physical Review B, 1972We use the techniques of perturbation theory and the electronic polaron to classify and obtain explicit formulas for electronic correlation in nonmetals. We consider explicitly the case in which the highest valence band is $p$ type and the lowest conduction band is $s$ type or vice versa, a situation which holds for all rare-gas solids, alkali halides,
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Carbene Complexes of Nonmetals
European Journal of Organic Chemistry, 2005AbstractElectrophilic carbenes accept a variety of n‐ and π‐donors. The products range from persistent ylides to matrix‐isolated xenon complexes. Ylides can be viewed as carbene complexes if they regenerate carbenes thermally or undergo concerted methylene transfer reactions.
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1996
Introduction superconductors structural materials optical materials conducting materials semiconducting materials insulating materials other materials.
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Introduction superconductors structural materials optical materials conducting materials semiconducting materials insulating materials other materials.
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2016
In the preceding chapters, the specific examples used concerned metals. This stems partly from the author’s experience but also from the fact that the majority of the research on diffusion in solids has been done with metals. There is reason to believe that all the general theory and most of the physical phenomena discussed in the earlier chapters ...
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In the preceding chapters, the specific examples used concerned metals. This stems partly from the author’s experience but also from the fact that the majority of the research on diffusion in solids has been done with metals. There is reason to believe that all the general theory and most of the physical phenomena discussed in the earlier chapters ...
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Covalent Inorganic Nonmetal Azides
1995Inorganic azides can be classified into (i) ionic salts (e.g., NaN3), (ii) heavymetal azides (e.g., AgN3, PbN3), and (iii) covalently bound nonmetal azides (XN3: X = H, R2B, R3Si, NO, NO2, R2P, halogen; R = alkyl, aryl) (Jones, 1973). Whereas the ionic salts are reasonably stable materials and sodium azide is prepared on a commercial scale, the major ...
Inis C. Tornieporth-Oetting +1 more
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Perfluorovinyl derivatives of nonmetals
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 19601. As a result of the reaction between perfluorovinylmagnesium iodide and PCl3, AsCl3, and SbCl3, the corresponding tris-(trifluorovinyl)-phosphine, tris-(trifluorovinyl)-arsine, and tris-(trifluorovinyl)-stibine were obtained. 2. Amides of the type ClP(NR2)2 reacted smoothly with R'MgX (where R' is alkyl or perfluoroalkenyl) to form ...
R. N. Sterlin +3 more
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