7,006 research outputs found
Item information functions from generalized partial credit models or partial credit models (*), CW, WE, JI, IW, QW, JS.
No full textItem information functions from generalized partial credit models or partial credit models (*), CW, WE, JI, IW, QW, JS.</p
WebXR Template for P5.js
No full textThis project is made possible with funding by the Government of Ontario and through eCampusOntario’s support of the Virtual Learning Strategy.1. Getting started2. The template3. showArtwork()4. Staging assetsWebXR-ready scene for VR and desktop display. P5.js is an open source JavaScript library for creative coding, with a focus on making coding accessible and inclusive for artists, designers, educators, beginners, and anyone else.The project is officially hosted on Github at https://github.com/worldmaking/WebXR_P5js_eCampus21. A demo project using the template can be seen at https://alicelab.world/WebXR_P5js_eCampus21/This is one of three projects developed in parallel by OCAD University and York University researchers with the goal of providing students of varying educational backgrounds and skillsets with the necessary toolkits to quickly produce WebXR envrironments for their creative media projects: 1. WebXR Template for P5.js: https://github.com/worldmaking/WebXR_P5js_eCampus21--2. WebXR Template for A-Frame: https://github.com/ocadwebxr/ocadu-open-webxr--3. WebXR Template for Three.js and Node.js: https://github.com/worldmaking/WebXRNodeLab_eCampus21WebXR_P5js_eCampus21 by Haru Ji and Graham Wakefield is licensed under the GNU General Public License v3.0, except where otherwise noted
Immobilization behavior of methyl tert-butyl ether by cyclodextrins
No full textThe immobilization behavior of methyl tert-butyl ether (MTBE) by various cyclodextrins (CDs) was studied. Although it has a low hydrophobic character and high polarity compared to other organics, MTBE was effectively immobilized by CDs. The immobilization isotherm was a type of Freundlich isotherm. The immobilization capacity of beta-CDs was the largest of the natural CDs. The initial apparent association constant for MTBE-CD complex follows the order: gamma = beta > methyl-beta > hydroxypropyl beta > alpha. The difference in these constants is related to the size of MTBE and CDs. The size of beta- and gamma-CD is large enough to encapsulate MTBE molecule into the cavity, which that of alpha-CD is too small to encapsulate MTBE. (C) 2003 Elsevier B.V. All rights reserved
Removal of perchlorate from groundwater by the polyelectolyte-enhanced ultrafiltration process
No full textThe polyelectrolyte enhanced ultrafiltration (PEUF) process for perchlorate removal from groundwater containing common co-contaminants like nitrate and sulfate was investigated. Existing processes such as ion exchange can remove perchlorate but with greater complexity, especially when applied in the presence of high nitrate and sulfate concentration. The effect of cationic polyelectrolyte, poly(diallyldimethyl ammonium chloride) (PDADMAC) concentration and the effect of nitrate and sulfate in a broader concentration range were observed. In the absence of other anions, a lower amount of PDADMAC (0.5-1 mM) can remove more than 90% of perchlorate from the aqueous phase. However, in the presence of 5 mM nitrate, perchlorate removal decreases as the available binding sites of PDADMAC for perchlorate are reduced. In the presence of both 1 mM to 10 mM nitrate and sulfate, 60-80% perchlorate was removed with 30 mM PDADMAC. The removal of sulfate and nitrate in this case was nearly 75% and 65%, respectively. The effect of other parameters such as relative flux, membrane material and pore size were also observed to study the feasibility of PEUF for perchlorate removal. Consequently, PEUF proved to be an effective perchlorate removal process owing to the high removal efficiency and suitability in groundwater remediation containing other contaminants
Application of MEUF on removal heavy metal in the wastewater containing chelating agent by using a cationic surfactant
No full textRemoval of perchlorate from groundwater by polyelectrolyte enhanced ultrafiltration process
No full textEffect of nitrate & Sulfate in perchlorate removal from groundwater by surfactant mediated preciptation method
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Cationic starch-enhanced ultrafiltration for Cr(VI) removal
No full textThe feasibility of cationic starch-enhanced ultrafiltration (CSEUF) was investigated to remove chromate from the aqueous stream. Cationic starch is a modified starch with cationic functional groups, which interact with anionic pollutants. For CSEUF, a cationic starch was synthesized, whose degree of substitution was 0.2 and water-insoluble. Chromate was bound spontaneously to cationic starch, after that the binding was saturated. As the concentration of cationic starch increased from 0.5 to 1.0, to 1.5, to 2.0, and to 2.5 g/l, the removal of chromate increased from 33% to 62%, to 82%, to 95% and to 98%, respectively. Based on the high removal, high flux, and biodegradability of cationic starch, CSEUF is a feasible process to remove chromate from the aqueous stream
Removal of chlorinated contaminants form surfactant solution for the reuse of surfactant
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