molecular lesions. In his account of the description of Bruton's agammaglobulinemia and DiGeorge syndrome, Dr Clark provides a counterbalance in the clear clinical and scientific thinking which led to their description. The book is not all history however, and we are brought immediately up-to-date with the progress in gene therapy for ADA-SCID and the therapeutic prospects for the future. The c...

The average near-infrared (K-band) luminosity of 238 Hipparcos red clump giants is derived and then used to measure the distance to the Galactic center. These Hipparcos red clump giants have been previously employed as I-band standard candles. The advantage of the K-band is a decreased sensitivity to reddening, and perhaps also a reduced systematic dependence on metallicity. In order to investi...

We report the first extensive study of stellar Rb abundances. High-resolution spectra have been used to determine, or set upper limits on, the abundances of this heavy element and the associated elements Y, Zr, and Ba in 44 dwarfs and giants with metallicities spanning the range −2.0 < [Fe/H] < 0.0. In metal-deficient stars Rb is systematically overabundant relative to Fe; we find an average [R...

Abstract The puzzle of the Li-rich giant is still unsolved, contradicting prediction standard stellar models. Although exact evolutionary stages play a key role in knowledge giants, limited number giants have been observed with high-quality asteroseismic parameters to clearly distinguish stages. Based on LAMOST Data Release 7 (DR7), we applied data-driven neural network method derive for stars,...