منابع مشابه
Oases in the Desert: Three New Proposals
Two new nontrivial U(1) gauge symmetries are proposed, one based on the particle content of the standard model and the other on that of its supersymmetric generalization. Each is an unexpected first example of its kind. A third new proposal is the successful derivation of a realistic Majorana neutrino mass matrix, based on the underlying symmetry A4 and its radiative corrections.
متن کاملYet Another Extension of the Standard Model : Oases in the Desert ?
We have searched for conceptually simple extensions of the standard model, and describe here a candidate model which we find attractive. Our starting point is the assumption that off-diagonal CKM mixing matrix elements are directly related by lowest order perturbation theory to the quark mass matrices. This appears to be most easily and naturally implemented by assuming that all off-diagonal el...
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چکیده ندارد.
15 صفحه اولGenetic Characterization of Old Grapevines Collected in Oases of the Atacama Desert
Old grapevine (Vitis vinifera L.) accessions are a source of genes that could be rescued for use per se or in modern breeding programs. The first step in this rescuing is collecting and characterizing the germplasm from a particular region. This study presents the genetic characterization of 21 grapevine accessions collected from the Atacama Desert in the far North of Chile. Characterization wa...
متن کاملDesert salt flats as oases for the spider Saltonia incerta Banks (Araneae: Dictynidae)
The deserts of southwestern North America have undergone dramatic changes over their recent geological history including large changes in size and connectivity during the Pleistocene glaciopluvial cycles. This study examines the population history of the rare spider Saltonia incerta, once thought to be extinct, to determine the role of past climatological events in shaping the structure of the ...
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ژورنال
عنوان ژورنال: JAMA: The Journal of the American Medical Association
سال: 1918
ISSN: 0098-7484
DOI: 10.1001/jama.1918.02600310077023