Radiation and thermally induced changes in the oxidation state of uranium in metamict zircon have been systematically analysed, for the first time, using polarized near-infrared spectroscopy. The results showed that in damaged zircon U ions in crystalline domains exhibited relatively sharp, anisotropic signals from tetravalent and pentavalent U ions in crystalline domains (U4+ crystal and U5+ c...

Line oscillator strengths in the 20 electric dipole-allowed bands of (14)N(2) in the 89.7-93.5 nm (111480-106950 cm(-1)) region are reported from photoabsorption measurements at an instrumental resolution of approximately 6 mA (0.7 cm(-1)) full width at half maximum. The absorption spectrum comprises transitions to vibrational levels of the 3p sigma(u) c(4)' (1)Sigma(u)(+), 3p pi(u) c(3) (1)Pi(...

We briefly review the main features in the broad-band colour evolution of star clusters, over the complete age interval from 10 to 10 yr. The emphasis is in the problem of age-dating distant young clusters (∼< 2 Gyr) from their integrated colours. It is shown that U−B and B−V are less sensitive to metallicity than colours involving red passbands, like V −I, at least up to ages of some few Gyr. ...

The autodetachment spectrum of acetaldehyde enolate anion, CH,CHO-, is recorded near 14180 cm-’ using a coaxial laserion threshold photodetachment spectrometer. The spectrum represents transitions from u= 1 in the v) C-C-O bending mode of CH,CHOto u=O m the autodetaching dipole-bound state of the anion. The 32 rotationally resolved (0, 1) hot band transitions reported here were fit to Watson’s ...

Ground-based counts and colors of faint galaxies in the U and R bands in one eld at high Galactic latitude are presented. Integrated over ux, a total of 1:2 10 5 sources per square degree are found to U = 25:5 mag and 6:3 10 5 sources per square degree to R = 27 mag, with d log N=dm 0:5 in the U band and d log N=dm 0:3 in the R band. Consistent with these number-magnitude curves, sources become...

The anomalous properties of the Hall constant in the normal state of highTc superconductors are investigated within the single-band Hubbard model. We argue that the Mori theory is the appropriate formalism to address the Hall constant, since it aims directly at resistivities rather than conductivities. More specifically, the frequency dependent Hall constant decomposes into its infinite frequen...

Inelastic excitation of Er by a U beam, studied at near-barrier energies, has led to the observation of unusual features in rotational bands built on low-lying vibrations. The population of the high-spin members of the K50, b-vibrational band is enhanced due to mixing with the K52, g-vibrational band at spin 4. Strong mixing of the K50 band with a rotationally aligned 2 qp band results in this ...

Vacuum UV circular dichroism (CD) spectra were measured down to 174 nm for five homopolymers, five duplexes, and four triplexes containing adenine, uracil, and thymine. Near 190 nm, the CD bands of poly[d(A)] and poly[r(A)] were larger than the CD bands of the polypyrimidines, poly[d(T)], poly[d(U)], and poly[r(U)]. Little change was observed in the 190 nm region upon formation of the duplexes ...

Manuscript Received 4-June-2012 and revised 18-September-2012 ISSN: 2322-3936 Accepted on 1December-2012 Abstract—This paper presents a new approach for the design of a multiband uniplanar CPW-fed monopole antenna. The antenna consists of a fork like monopole strip to which is added an inverted U-shaped strip. The three branch fork like strip can create three resonant bands within the WLAN rang...