The green alga Scenedesmus was investigated for its ability to remove nitrogen from anaerobic digestion effluent possessing high ammonium content and alkalinity in addition to its growth characteristics. Nitrate and ammonium were indistinguishable as a nitrogen source when the ammonium concentration was at normal cultivation levels. Ammonium up to 100ppm NH(4)-N did not inhibit cell growth, but...

In this study, plantwide control of an absorption/stripping CO2 capture process using mono-ethanol-amine was investigated using dynamic simulation. In this system, CO2 removal ratio is influenced by operating variables such as lean solvent rate and lean solvent loading, which is in-turn determined by reboiler duty in the stripper. Moreover, we found that the long term stability of the system ca...

Skull stripping methods are designed to eliminate the non-brain tissue in magnetic resonance (MR) brain images. Removal of non-brain tissues is a fundamental step in enabling the processing of brain MR images. The aim of this study is to develop an automatic accurate skull stripping method based on deformable models and histogram analysis. A rough-segmentation step is used to find the optimal s...

OBJECTIVE To investigate whether autologous ossicles can be safely used in ossicular reconstruction in cholesteatoma surgery after attempting cholesteatoma removal under the operating microscope. STUDY DESIGN A prospective fine-section histological study of formalin-stored ossicles, harvested from cholesteatomatous ears, to evaluate for existence of residual cholesteatoma after surface diseas...

Organic compounds, including MTBE, have been treated in drinking water using AOPs at several sites across the United States over the past five years. The largest system (3,000 gpm) is a medium pressure H 2 O 2 /MP-UV system installed in Salt Lake City, Utah to remove up to 10 µg/L PCE from drinking water (Crawford, 1999). Other systems are installed in Canada for the removal of N-nitroso dimeth...

The state of California has passed legislation to divert organic materials from landfills reduce the emission methane atmosphere. A large amount this source separated (SSO) material is expected be used as a feedstock for anaerobic digestion processes. Based on review properties likely SSO feedstocks, it clear that while are high in volatile solids, they also concentrated sources nutrients (prin...

Abstract This paper evaluates the remediation of soil spiked with lindane using a combined treatment consisting electrokinetic flushing (EKSF) air stripping to elucidate main processes occurring in when electric fields 0.75 V cm −1 and 1.50 are applied. The results demonstrate that is efficiently transported anodic cathodic wells fluids containing sodium dodecyl sulfate (SDS). Additionally, an ...

The influence of the ligand/metal ion concentration ratio on the shape, peak current and peak potential of curves obtained by anodic stripping voltammetry (a.s.v.) at the hanging mercury drop electrode is described, particularly with respect to the use of a.s.v. for speciation of metal ions at very low concentrations as is often found in natural waters. The lead(II)/triethylenetetramine system ...

The commercially available equipment for potentiometric stripping analysis (PSA) was tested for routine lead and cadmium determination in whole-blood samples. In contrast to anodic stripping voltammetry, PSA is not subject to background interferences from organic electroactive constituents in the sample or to the presence of dissolved oxygen (i.e., oxygen removal is not necessary). To determine...