Conformational relaxation dynamics of a poly(N-isopropylacrylamide) aqueous solution measured using the laser temperature jump transient grating method

2012 ◽  
Vol 14 (16) ◽  
pp. 5620 ◽  
Author(s):  
Hayato Inoue ◽  
Kenji Katayama ◽  
Kaoru Iwai ◽  
Atsushi Miura ◽  
Hiroshi Masuhara
Keyword(s):  
Aqueous Solution ◽  
Temperature Jump ◽  
Relaxation Dynamics ◽  
Transient Grating ◽  
Conformational Relaxation ◽  
Laser Temperature Jump

Simulation of UV Absorption Spectra and Relaxation Dynamics of Uracil and Uracil-Water Clusters

2020 ◽  
Author(s):  
Branislav Milovanović ◽  
Jurica Novak ◽  
Mihajlo Etinski ◽  
Wolfgang Domcke ◽  
Nadja Doslic
Keyword(s):  
Aqueous Solution ◽  
Gas Phase ◽  
Absorption Spectra ◽  
Absorption Spectroscopy ◽  
Water Clusters ◽  
Uv Absorption ◽  
Relaxation Dynamics ◽  
Nonradiative Relaxation ◽  
Uv Absorption Spectra ◽  
Uv Absorption Spectroscopy

Despite many studies, the mechanisms of nonradiative relaxation of uracil in the gas phase and in aqueous solution are still not fully resolved. Here we combine theoretical UV absorption spectroscopy...

Excited-state dynamics of guanosine in aqueous solution revealed by time-resolved photoelectron spectroscopy: experiment and theory

2015 ◽  
Vol 17 (47) ◽  
pp. 31978-31987 ◽  
Author(s):  
Franziska Buchner ◽  
Berit Heggen ◽  
Hans-Hermann Ritze ◽  
Walter Thiel ◽  
Andrea Lübcke
Keyword(s):  
Aqueous Solution ◽  
Excited State ◽  
Photoelectron Spectroscopy ◽  
Relaxation Dynamics ◽  
Time Resolved ◽  
Excited State Dynamics ◽  
Spectroscopy Experiment

Time-resolved photoelectron spectroscopy is performed on aqueous guanosine solution to study its excited-state relaxation dynamics.

Slip velocity and temperature jump of a non-Newtonian nanofluid, aqueous solution of carboxy-methyl cellulose/aluminum oxide nanoparticles, through a microtube

2019 ◽  
Vol 29 (5) ◽  
pp. 1606-1628 ◽  
Author(s):  
Marjan Goodarzi ◽  
Saeed Javid ◽  
Ali Sajadifar ◽  
Mehdi Nojoomizadeh ◽  
Seyed Hossein Motaharipour ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Aqueous Solution ◽  
Aluminum Oxide ◽  
Temperature Jump ◽  
Methyl Cellulose ◽  
Oxide Nanoparticles ◽  
Carboxy Methyl Cellulose ◽  
Aluminum Oxide Nanoparticles ◽  
Content Type ◽  
Carboxy Methyl

Purpose With respect to two new subjects, i.e. nanofluids and microchannels, in heat transfer systems and modern techniques used for building them, this paper aims to study on effect of using aluminum oxide nanoparticles in non-Newtonian fluid of aqueous solution of carboxy-methyl cellulose in microtube and through application of different slip coefficients to achieve various qualities on surface of microtube. Design/methodology/approach Simultaneously, the effect of presence of nanoparticles and phenomenon of slip and temperature jump has been explored in non-Newtonian nanofluid in this essay. The assumption of homogeneity of nanofluid and fixed temperature of wall in microtube has been used in modeling processes. Findings The results have been presented as diagrams of velocity, temperature and Nusselt Number and the investigations have indicated that addition of nanoparticles to the base fluid and increase in microtube slip coefficient might improve rate of heat transfer in microtube. Originality/value The flow of non-Newtonian nanofluid of aqueous solution of carboxy methyl cellulose-aluminum oxide has been determined in a microtube for the first time.

Notizen: Pentaoxoiodate(VII)monoanion as an Intermediate in the Interconversion of Hexa- and Tetraoxoiodate(VII)monoanions in Aqueous Solution

1977 ◽  
Vol 32 (1) ◽  
pp. 114-115 ◽  
Author(s):  
G. J. Buist ◽  
C. J. Holloway
Keyword(s):  
Aqueous Solution ◽  
Crucial Role ◽  
Temperature Jump ◽  
Water Molecules ◽  
Definite Evidence ◽  
Relaxation Measurements

Results from temperature-jump relaxation measurements indicate the existence of an intermediate, the pentaoxoiodate(VII)monoanion, in the hydration-dehydration equilibrium between hexa- and tetraoxoiodate(VII)monoanions in aqueous solution. The interconversion is accompanied by a considerable reorientation of the water molecules solvating the monoanionic species, which play a crucial rôle in the mechanism of hydration and dehyd ation. This is the first definite evidence for the existence of a penta coordinated periodate species in aqueous solution.

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