Low threshold and widely tunable InAs/GaAs quantum-dot lasers are implemented with grating-coupled external-cavity arrangement. Throughout the tuning range of 130 nm, from 1160 to 1290 nm, the threshold current density is not more than 0.9 kA/cm2 and no noticeable threshold jump is observed. For a shorter-cavity device, the injection current is kept at a record low value of 90 mA but the tuning...

1808-1814 41 Soliday, C. L. and Kolattukudy, 1’. E. (1979) Arch. Riochem. Biophys. 197,367-378 42 Gander, J. E., Drewes, L. R., Fang, F. and h i , A. (1977) J. Biol. Chem. 252,2187-2193 43 Speake, B. K., Malley, D. J. and Hemming, F. W. (1981) Arch. Biochem. Biophys. 210, 110-1 13 44 Kruszewska. J., Messner, R., Kubicek, C. 1’. and Palamarczyk, G. (1989) J. Gen. Microbiol. 135, 301-307 45 Krusz...

Division of Functional Genomics, Jichi Medical University, Tochigi 329-0498, Japan; Department of Respiratory Medicine, Toho University Omori Medical Center, Tokyo 143-8541, Japan; Tohoku University Hospital, Miyagi 980-8574, Japan; Miyagi Cancer Center, Miyagi 981-1293, Japan; First Department of Medicine, Hokkaido University School of Medicine, Hokkaido 060-8638, Japan; Asahikawa Medical Cent...

As narrativas do dança-drama topeng balinês retratam crônicas históricas e mitológicas dos tempos em que Bali esteve sob influência império Majapahit (1293-1520) durante a migração da corte javanesa para ilha. Relatam o cotidiano os grandes feitos antigos reis balineses javaneses bem como suas relações com aristocracia, as fundações de vilarejos desenvolvimento genealogias. Mas seriam essas art...

Our aim here is to give sufficient conditions on the finite element spaces near a point so that the error in the finite element method for the function and its derivatives at the point have exact asymptotic expansions in terms of the mesh parameter h, valid for h sufficiently small. Such expansions are obtained from the so-called asymptotic expansion inequalities valid in RN for N ≥ 2, studies ...