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Measurements were made of the emissions of particles and gases from two diesel-powered ships in the southern Atlantic Ocean off the coast of Namibia. The measurements are used to derive emission factors from ships of three species not reported previously, namely, black carbon, accumulation-mode particles, and cloud condensation nuclei (CCN), as well as for carbon dioxide, carbon monoxide (CO), methane...
The polysaccharide arabinogalactan (AG) can provide a low cost alternative to the fractionated dextrans for use with polyethylene glycol (PEG) in aqueous two-phase, two-polymer systems. The narrow molecular weight range and low viscosity at high concentration of AG provide for predictable and reproducible separations under a variety of conditions. The partition behavior of bovine serum albumin (BSA)...
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