Dialysis-related amyloidosis (DRA) is a common complication associated with long-term haemodialysis therapy. The elimination of beta2-microglobulin (beta2m), the major constituent of the amyloid fibrils in DRA, from circulation has been expected to bring some clinical benefit. Recently, a direct haemoperfusion method using selective beta2m absorption column to eliminate circulating beta2m has b...

The observed antlcorrelation between diffuse soft X-ray flux and H I column density has been explained as absorption of soft X-rays produced in a hot galactic halo, assuming that the neutral interstellar material is sufficiently clumped to reduce the soft X-ray absorption cross section by a factor of two to three. We have extended a 21 cm emission line study of H I column density variations at ...

We report a detection of the fundamental rotational transition of hydrogen fluoride in absorption towards Orion KL using Herschel/HIFI. After the removal of contaminating features associated with common molecules (“weeds”), the HF spectrum shows a P-Cygni profile, with weak redshifted emission and strong blue-shifted absorption, associated with the low-velocity molecular outflow. We derive an e...

X-ray observations have revealed that many microquasars and low-mass X-ray binaries (LMXBs) exhibit narrow absorption features identified with resonant absorption from Fexxv and Fexxvi and other abundant ions. In many well studied systems there is evidence for blue-shifts, indicating outflowing plasmas. We succesfully model the changes in both the X-ray continuum and the Fe absorption features ...

Far Ultraviolet Spectroscopic Explorer (FUSE) data is used to investigate the molecular hydrogen (H2) content of intermediate-velocity clouds (IVCs) in the lower halo of the Milky Way. We analyze interstellar absorption towards 56 (mostly extragalactic) background sources to study H2 absorption in the Lymanand Werner bands in 61 IVC components at H i column densities ≥ 10 cm. For data with good...

the main objective of this paper is to examine the effect of nanomaterials on mass transfer coefficient in bubble type absorption of carbon dioxide by experiment. the absorption process is carried out in a bubble column and in room temperature. mass transfer coefficient, saturated concentration of co2, and gas holdup are determined in this system. the kinds of nanomaterials, the concentrations ...

ASCA X-ray spectral analysis of the Seyfert 2 galaxy IRAS 04575−7537 is presented. The main result is the presence of a significant iron edge at a rest energy of 7.13 −0.16 keV. The spectrum is flat (Γ ∼ 1.5) with a substantial absorption: NH ∼ 1022 cm−2 and does not require any reflection component. There is also evidence of a narrow Fe Kα emission line, whose rest energy (E = 6.35 −0.03 keV) ...

Tropospheric column-averaged CH4 mole fractions were derived from ground-based column absorption measurements. The method uses stratospheric N2O columns to correct for the stratospheric contribution to the CH4 total column. The method was applied to four Total Carbon Column Observing Network (TCCON) sites covering locations from the Northern Arctic to the tropics. It performs well for all sites...

We have examined the physical conditions in intrinsic UV-absorbing gas in the Seyfert galaxy NGC 4151, using echelle spectra obtained with the Space Telescope Imaging Spectrograph (STIS) on the Hubble Space Telescope (HST) on 1999 July 19. We confirm the presence of the kinematic components detected in earlier Goddard High Resolution Spectrograph (GHRS) observations, all of which appear to be o...

[1] The column-averaged volume mixing ratio (VMR) of CO2 over Kitt Peak, Arizona, has been retrieved from high-resolution solar absorption spectra obtained with the Fourier transform spectrometer on the McMath telescope. Simultaneous column measurements of CO2 at 6300 cm 1 and O2 at 7900 cm 1 were ratioed to minimize systematic errors. These column ratios were then scaled by the mean O2 VMR (0....