منابع مشابه
Flavour structure , flavour symmetry and supersymmetry ∗
One of the most obscure sides of particle physics concerns the fermion flavor structure. This is a complex problem with different aspects questioning the origin of the mass spectrum and mixing pattern of quarks and leptons (including neutrinos) and CP-violation, as well as the suppression of flavor changing (FC) neutral currents, the strong CP-problem, etc. [1]. Presently, thanks to the new dat...
متن کاملToo much too young? In Nepal more a case of too little, too young.
Too much too young? In Nepal more a case of too little, too young Sally Sm ith Director Sakn ya HIV/ AIDS Preven tion Edu cation Un it, Un ited Mission s to Nepal (u n til 1999).
متن کاملWHY OPTICALLY–FAINT AGN ARE OPTICALLY–FAINT: THE Spitzer PERSPECTIVE
Optically–faint X-ray sources (those with fX/fR> 10) constitute about 20% of X-ray sources in deep surveys, and are potentially highly obscured and/or at high redshift. Their faint optical fluxes are generally beyond the reach of spectroscopy. For a sample of 20 optically–faint sources in CDFS, we compile 0.4–24 μm photometry, relying heavily on Spitzer. We estimate photometric redshifts for 17...
متن کاملWhat a difference a year makes? Too little too late.
'… if we could successfully intervene and change a woman's age at first birth and n oth in g else about her up to that point'? 1 Scally argu es th at we do n ot deal with th e m u ch m ore im port-an t issu es of th e edu cation al an d social effects of early m oth er-h ood an d focu s on a n arrow m edical defin ition of pu blic h ealth. We wou ld argu e th at we deal prim arily with th e det...
متن کاملPresuppositional Too, Postsuppositional Too
One of the insights of dynamic semantics in its various guises (Kamp 1981, Heim 1982, Groenendijk & Stokhof 1991, Kamp & Reyle 1993 among many others) is that interpretation is sensitive to left-to-right order. Is order sensitivity, particularly the default left-to-right order of evaluation, a property of particular meanings of certain lexical items (e.g., dynamically interpreted conjunction) o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 2001
ISSN: 0028-0836,1476-4687
DOI: 10.1038/35075130