Analysis of ammonia-nitrogen removal kinetics by stage in pilot scale vertical flow wetlands treating landfill leachate in series.

This study explored the effect stage number and plant type have on ammonia-nitrogen (NH-N) removal kinetics in a two-stage pilot-scale vertical flow constructed wetland (VFCW) system treating landfill leachate. Half of the VFCW columns were planted with Typha latifolia and the other half Scirpus californicus, and half of the columns were loaded with municipal solid waste landfill leachate (diluted to 1 part leachate to 2 parts total) with the effluent from these columns was collected in two separate barrels. The remaining columns were loaded with the effluent collected from the first columns, creating a two-stage VFCW system with four unique pairs to be tested.

Give Me a Sign: Using Data Gloves for Static Hand-Shape Recognition.

Human-to-human communication via the computer is mainly carried out using a keyboard or microphone. In the field of virtual reality (VR), where the most immersive experience possible is desired, the use of a keyboard contradicts this goal, while the use of a microphone is not always desirable (e.g.

Factors related to the severity of research misconduct administrative actions: An analysis of office of research integrity case summaries from 1993 to 2023.

We extracted, coded, and analyzed data from 343 Office of Research Integrity (ORI) case summaries published in the and other venues from May 1993 to July 2023 to test hypotheses concerning the relationship between the severity of ORI administrative actions and various demographic and institutional factors. We found that factors indicative of the severity of the respondent's misconduct or a pattern of misbehavior were associated with the severity of ORI administrative actions. Being required by ORI to retract or correct publications and aggravating factors, such as interfering with an investigation, were both positively associated with receiving a funding debarment and with receiving an administrative action longer than three years.

Effect of waste-derived soil amendments on mitigating leaching impacts from municipal solid waste incineration (MSWI) ash.

This study explores modifying a sandy soil with a low solid to liquid partitioning coefficient (K) by adding amendments including iron-rich industrial slag byproducts and biochars, which contain sorption sites for trace metals present in MSWI ash leachate (notably Sb, cited as a concern for reuse applications). K values for Sb were determined for the sandy soil to be as low as 1.6 ± 0.

Distributions of trace elements within MSWI bottom and combined ash components: Implications for reuse practices.

Concentrations of 25 inorganic elements were measured in both bulk ash and individual ash components from residuals at three municipal solid waste incineration (MSWI) facilities in the US (two combined ash (CA) and one bottom ash (BA)). Concentrations were assessed based on particle size and component to understand the contribution from each fraction. The results found that among facilities, the finer size fractions contained elevated concentrations of trace elements of concern (As, Pb, Sb) when compared to the coarse fraction, but concentrations varied among facilities depending on the type of ash and differences in advanced metals recovery processes.