quartz crystal microbalance
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Fuel ◽  
2022 ◽  
Vol 313 ◽  
pp. 122998
Author(s):  
Mohammad Mahdi Roshani ◽  
Elahe Rostaminikoo ◽  
Edris Joonaki ◽  
Ali Mirzaalian Dastjerdi ◽  
Bita Najafi ◽  
...  

2022 ◽  
Vol 7 (1) ◽  
Author(s):  
Melany Febrina ◽  
Aditya Rianjanu ◽  
Abdul Rajak ◽  
Rino R. Mukti ◽  
Mitra Djamal

2022 ◽  
Vol 43 (2) ◽  
Author(s):  
Dzmitry H. Zaitsau ◽  
Sergey P. Verevkin

AbstractNew experimental vapor pressures in the range 407 K to 460 K and vaporization enthalpy of the ionic liquids (IL) N-alkyl-N-methyl-pyrrolidinium bis(fluorosulfonyl)imide ionic liquids have been measured using quartz crystal microbalance. The absolute vapor pressures and vaporization enthalpies were compared with analogous pyrrolidinium-based ILs with the bis(trifluoromethanesulfonyl)imide anion. The evaluated difference in vaporization enthalpy of ILs with bis(fluorosulfonyl)imide and bis(trifluoromethanesulfonyl)imide anions allowed for estimation of corresponding property for a wide set of ILs with bis(fluorosulfonyl)imide anion. The results are relevant to chemical engineering calculations of processes involving ILs as reaction and separation media.


2022 ◽  
pp. 139097
Author(s):  
Onur Alev ◽  
Okan Özdemir ◽  
Eda Goldenberg ◽  
Leyla Çolakerol Arslan ◽  
Serkan Büyükköse ◽  
...  

2021 ◽  
pp. 2100045
Author(s):  
Andreas Böttcher ◽  
Judith Petri ◽  
Arne Langhoff ◽  
Stephan Scholl ◽  
Wolfgang Augustin ◽  
...  

Micromachines ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 55
Author(s):  
Marek Tatarko ◽  
Ilia N. Ivanov ◽  
Tibor Hianik

We used the research quartz crystal microbalance (RQCM) to monitor regulatory effects of plasmin and trypsin in the presence of their inhibitor α2-antiplasmin. The gold surface of quartz crystals was modified with a β-casein layer that served as a substrate for protease digestion. The addition of plasmin or trypsin as well as their mixtures with α2-antiplasmin resulted in an increase of resonant frequency, f, and in a decrease of motional resistance, Rm, depending on the molar ratio of protease: antiplasmin. At equimolar concentrations of protease and α2-antiplasmin (5 nM:5 nM) full inhibition of protease activity took place. Monitoring of plasmin activity on an hourly and daily basis revealed a prominent effect of autolysis and decrease of plasmin activity in freshly activated samples. The degree of inhibition as well as plasmin half-life (t1/2 = 2.48 ± 0.28 days) connected with its degradation was determined.


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