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Ammonia in gas phase has an unpleasant smell and is hazardous to human health. Though activated carbon has been widely used as a representative adsorbent, it is significantly vulnerable to humidity. In the study, a nonwoven fibrous polypropylene polymer was synthesized using a photo-graft reaction with imidazole followed by quaternization with CHI. The time of each reaction was optimized for the maximum adsorption. The FT-IR confirmed that 1-vinyl imidazole (Vim) and methyl group (-CH) were successfully introduced into PP fibers. The Langmuir isotherm characterized that the adsorption capacity was 44.84 mg NO-N g. The adsorption intensity, 1/n, by Freundlich adsorption isotherm was 0.41 indicating that the adsorption of NO-N onto PP-g-Vim-CHI was favorable at the studied conditions. In the gas phase, maximum adsorption of was calculated to be 40 ± 0.69 mg NH g by BET model. Though the adsorption amount decreased by 2.5 times as the temperature increased from 15 °C to 45 °C, the amounts and rates of adsorption were not influenced by humidity. In conclusion, the synthesized PP-g-Vim-CHI was able to ammonia in the gas phase at a range of humidity.
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As the interest in environmentally friendly materials and concerns regarding depletion of petroleum resources has increased, the research on natural polymers is being actively pursued. Among the vario...
Gold-catalyzed formal 1,3-dipolar annulation between readily accessible N-pyridinylsulfilimines and ynamides is reported. A diverse set of imidazole derivatives is prepared from the corresponding sulf...
This research reports an integrated method for synthesizing a quaternary nitrogen-grafted activated carbon that is derived from a subbituminous coal source. The protocol employed nitric acid oxidation...
A general synthesis of hetaryl and aryl C-4(5) linked imidazole C-nucleoside analogues has been developed by the reaction of sugar alkynes with het(aryl) iodides, KMnO/TBAB oxidation and CoFeO NPs cat...
The structural and dynamic properties of imidazole in aqueous solution have been studied by means of classical and ab initio molecular dynamics simulations. We developed a new force field for the imid...
To evaluate the safety and efficacy of the Lichtenstein's hernioplasty using Infinit® PTFE Mesh, and to compare it with the traditional Lichtenstein procedure performed with polypropylene...
This is a pilot trial testing enteral feeds that are high versus low in prebiotic fiber in 20 critically ill adults. The long-term goal is to determine the efficacy of fiber for the preven...
To evaluate the safety and efficacy of the Lichtenstein's hernioplasty using the Surgisis ES soft tissue graft, as a mesh, and to compare it with the traditional Lichtenstein procedure per...
In plastic and reconstructive surgery, treatment strategies of second-degree burn wounds and split-skin grafted third-degree burn wounds aim at reducing infection and improving reepithelia...
The effects of a dietary fiber on hunger and food intake will be tested in men and women. Participants will receive fiber as part of a breakfast meal on two occasions. On another occasion,...
A TEXTILE fiber obtained from the pappus (outside the SEEDS) of cotton plant (GOSSYPIUM). Inhalation of cotton fiber dust over a prolonged period can result in BYSSINOSIS.
(GTP cyclohydrolase I) or GTP 7,8-8,9-dihydrolase (pyrophosphate-forming) (GTP cyclohydrolase II). An enzyme group that hydrolyzes the imidazole ring of GTP, releasing carbon-8 as formate. Two C-N bonds are hydrolyzed and the pentase unit is isomerized. This is the first step in the synthesis of folic acid from GTP. EC 18.104.22.168 (GTP cyclohydrolase I) and EC 22.214.171.124 (GTP cyclohydrolase II).
Techniques using laser energy in combination with a balloon catheter to perform angioplasty. These procedures can take several forms including: 1, laser fiber delivering the energy while the inflated balloon centers the fiber and occludes the blood flow; 2, balloon angioplasty immediately following laser angioplasty; or 3, laser energy transmitted through angioplasty balloons that contain an internal fiber.
An induced state of non-reactivity to grafted tissue from a donor organism that would ordinarily trigger a cell-mediated or humoral immune response.
A copolymer of polyethylene and polypropylene ether glycol. It is a non-ionic polyol surface-active agent used medically as a fecal softener and in cattle for prevention of bloat.