— The 2-m robotic Liverpool Telescope (LT) is ideally suited to the rapid follow-up of unpredictable and transient events such as GRBs. Our GRB follow-up strategy is designed to identify optical/IR counterparts in real time; it involves the automatic triggering of initial observations, on receipt of an alert from Gamma Ray Observatories HETE-2, INTEGRAL and Swift, followed by automated data red...

methods retrospective cohort study of blunt trauma patients with rib fractures at a level i trauma center that had both a cxr and a ct chest. the ct finding of ≥ 3 additional fractures in patients with ≤ 3 rib fractures on cxr was considered clinically meaningful. student’s t-test and chi-square analysis were used for comparison. results we identified 499 patients with rib fractures: 93 (18.6%)...

We report on low-resolution spectroscopy of GX339–4 during its current, extended X-ray 'off' state in May 2000 (r=20.1) obtained with the VLT Focal Re-ducer/low dispersion Spectrograph (FORS1). Although we do not positively detect the secondary star in GX339–4 we place an upper limit of 30 percent on the contribution of a " normal " K-type secondary star spectrum to the observed flux. Using thi...

We investigated the effects of laser excitation wavelength on water-window emission lines of laser-produced boron-nitride plasmas. Plasmas are produced by focusing 1064 nm and harmonically generated 532 and 266 nm radiation from a Nd:YAG laser on BN target in vacuum. Soft x-ray emission lines in the water-window region are recorded using a grazing-incidence spectrograph. Filtered photodiodes ar...

— The K X-ray absorption discontinuity of cobalt in the compounds of the RCo5 family (R = rare earth or yttrium) has been measured with a bent crystal spectrograph. It is observed that the main discontinuity shifts to the low energy side, with respect to that in pure cobalt indicating a flow of charge from R to Co. The plot between the observed shifts and the number of covalently bonded electro...

Soft x-ray emission from plasmas produced by ablation from a magnesium target employing a ruby laser is studied using a grazing incidence spectrograph in the spectral region 3–12 nm. Emission intensities are investigated for different ionic lines as a function of position, time after the maximum of the laser pulse and laser irradiance. A gated pinhole camera is employed for studying the evoluti...

background: bisphosphonates (bps) are used extensively for managing the osteoporosis. there are some controversies on atypical fractures of femur that associated with increase in cortical thickness (ct) and bps' use. in this study, the effects of alendronate consumption were studied on femoral ct as a predictor for atypical fracture.   methods: forty nine post-menopausal women aged 50-70 years ...

We present Hubble Space Telescope ultraviolet observations with the Goddard High Resolution Spectrograph of the supersoft X-ray binaries CAL 83 and RX J0513.9−6951 in the Large Magellanic Cloud. Both sources show a remarkably similar spectrum with an almost flat continuum and weak N V and O V emission lines. The neutral hydrogen column densities derived from the broad Lyα profile are NHI = (6.5...

This paper reports the results of a near infrared spectroscopic survey of LINER galaxies undertaken with a new infrared spectrograph at the 5 m Hale telescope. The galaxy sample includes 11 LINERs with spectra covering the [FeII] (1.2567 μm), Paβ (1.2818 μm), H2 ( 1-0 S(1), 2.1218 μm) and Brγ (2.1655 μm) near infrared emission lines, and one additional galaxy with only [FeII] and Paβ line cover...