The use of porous materials to store natural gas in vehicles requires large amounts of methane per unit of volume. Here we report the synthesis, crystal structure and methane adsorption properties of two new aluminum metal-organic frameworks, MOF-519 and MOF-520. Both materials exhibit permanent porosity and high methane volumetric storage capacity: MOF-519 has a volumetric capacity of 200 and ...

Context. AU Mic is a young M-type star surrounded by an edge-on optically thin debris disk that shares many common observational properties with the disk around β Pictoris. In particular, the scattered light surface brightness profile falls off as ∼ r −5 outside 120 AU for β Pictoris and 35 AU for AU Mic. In both cases, the disk color raises with increasing distance beyond these reference radii...

Ten young male participants were tested their psychophysically determined 4-h maximum acceptable weight of lifting (MAWL) of 90-degree asymmetric lifting for three lifting frequencies (1 lift/min, 2 lifts/min, 4 lifts/min) and three lifting containers (50 x 35 x 15 cm, 70 x 35 x 15 cm, 50 x 50 x 15 cm). The results showed that the MAWL decreased with increasing frequency and container width or ...

Context. SS433 is a Galactic microquasar with powerful outflows (double jet, accretion disk and winds) well-known orbital, precessional, nutational period. Aims. In this work we characterise different outflow parameters throughout the precessional cycle of system. Methods. We analysed ten NuSTAR (3–70 keV) observations ?30 ks that span ?1.5 cycles. extracted averaged spectra modelled them using...

The extraplanar diffuse ionized gas (eDIG) in 17 nearby, edge-on disk galaxies is studied using deep Taurus Tunable Filter Hα and [N II] λ6583 images and conventional interference filter Hα + [N II] λ6548, 6583 images which reach flux levels generally below ∼ 1 × 10−17 erg s−1 cm−2 arcsec−2. [N II] λ6583/Hα excitation maps are available for 10 of these objects. All but one galaxy in the sample ...

The effect of a surface open to air on the ensiling process was investigated in 15 × 60 cm PVC silos in four trials, three with alfalfa (30, 41, and 49% dry matter, DM) and one with whole-plant corn (35% DM). Silos were sampled 1, 2, 5, 7, 14, and 28 d post-filling at 5, 20, 35, and 50 cm from the open surface. At 5 cm, little fermentation occurred as oxygen contents were at 10% or higher, and ...

We have performed an analysis and interpretation of the X-ray light curve of the accreting neutron star Her X-1 obtained with the ASM RXTE over the period 1996 February to 2004 September. The averaged X-ray light curves are constructed by means of adding up light curves corresponding to different 35 day cycles. A numerical model is introduced to explain the properties of the averaged light curv...

We investigate the structure and the stabilities of a protoplanetary disk, which is heated by viscous process in itself and by its central star. The disk is set to rotate with the Keplerian velocity and has the surface density distribution of the minimum mass solar nebula. We assume the vertical hydrostatic equilibrium and the radiative equilibrium at each point, and solve the two-dimensional r...

BACKGROUND Catheter colonization and bloodstream infection during the first week after insertion of a central venous catheter have been shown to result from the patient's own skin flora. METHODS The backs of 32 healthy subjects were prepped with a 2% chlorhexidine gluconate (CHG)/70% isopropyl alcohol antiseptic. Three dressings, 2 of which contained CHG, were placed on the prepped skin in a ...