7 research outputs found
Organophosphorus Diazinon Pesticide Removing from Aqueous Solution by Zero-Valent Iron Supported on Biopolymer Chitosan: RSM Optimization Methodology
No full textPreparation of granular composite materials as novel sorbents and their application for removal of heavy metals from solution
No full textSurgically managed human cystic echinococcosis in north-eastern Iran: a single center’s experience from 2001 to 2008
No full textA Novel Geometric Mean Feature Space Discriminant Analysis Method for Hyperspectral Image Feature Extraction
No full text
Measurement of Acoustic Attenuation in South Pole Ice
No full textUsing the South Pole Acoustic Test Setup (SPATS) and a retrievable
transmitter deployed in holes drilled for the IceCube experiment, we have
measured the attenuation of acoustic signals by South Pole ice at depths
between 190 m and 500 m. Three data sets, using different acoustic sources,
have been analyzed and give consistent results. The method with the smallest
systematic uncertainties yields an amplitude attenuation coefficient alpha =
3.20 \pm 0.57 km^(-1) between 10 and 30 kHz, considerably larger than previous
theoretical estimates. Expressed as an attenuation length, the analyses give a
consistent result for lambda = 1/alpha of ~1/300 m with 20% uncertainty. No
significant depth or frequency dependence has been found.Comment: 17 pages, 12 figures, published in Astroparticle Physics, 201
