Conformational Diffusion and Helix Formation Kinetics

2000 ◽  
Vol 85 (12) ◽  
pp. 2637-2640 ◽  
Author(s):  
Gerhard Hummer ◽  
Angel E. García ◽  
Shekhar Garde
2009 ◽  
Vol 404 (23-24) ◽  
pp. 4576-4578
Author(s):  
Nikolai Yarykin ◽  
Jörg Weber

Molecules ◽  
2019 ◽  
Vol 24 (17) ◽  
pp. 3065
Author(s):  
Juan Lv ◽  
Yan Wang ◽  
Na Li

The highly prescribed antidepressant, citalopram, as one of newly emerging pollutants, has been frequently detected in the aquatic environment. Citalopram oxidation was examined during sodium hypochlorite (NaOCl) and chlorine dioxide (ClO2) chlorination processes since conventional wastewater treatment plants cannot remove citalopram effectively. Citalopram has been demonstrated to form N-nitrosodimethylamine (NDMA) during chlorination in our previous study. Further investigation on NDMA formation kinetics was conducted in the present study. Influences of operational variables (disinfectant dose, pH value) and water matrix on citalopram degradation, as well as NDMA generation, were evaluated. The results indicated high reactivity of citalopram with NaOCl and ClO2. NDMA formation included two stages during CIT oxidation, which were linear related with reaction time. NaOCl was more beneficial to remove CIT, but it caused more NDMA formation. Increasing disinfectant dosage promoted citalopram removal and NDMA formation. However, no consistent correlation was found between citalopram removal and pH. Contrary to the situation of citalopram removal, NDMA generation was enhanced when citalopram was present in actual water matrices, especially in secondary effluent. DMA, as an intermediate of citalopram chlorination, contributed to NDMA formation, but not the only way.


2021 ◽  
Author(s):  
A. A. Barzov ◽  
A. L. Galinovskiy ◽  
A. I. Denchik ◽  
Kyaw Myo Htet

2021 ◽  
pp. 118293
Author(s):  
Andrés Posbeyikian ◽  
Esteban Tubert ◽  
Alejandro Bacigalupe ◽  
Mariano Martin Escobar ◽  
Patricio Román Santagapita ◽  
...  

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