Study on the measurement of the thermodynamic molar absorption coefficient

2019 ◽  
Vol 1 (1) ◽  
pp. 28-31
Author(s):  
Zhu Huaishan
Keyword(s):  
Absorption Coefficient ◽  
Molar Absorption Coefficient

scholarly journals A soluble NADH dehydrogenase (NADH: ferricyanide oxidoreductase) from Thermus aquaticus strain T351

1983 ◽  
Vol 209 (2) ◽  
pp. 427-433 ◽  
Author(s):  
K A J Walsh ◽  
R M Daniel ◽  
H W Morgan
Keyword(s):  
Absorption Coefficient ◽  
Molecular Mass ◽  
Half Life ◽  
Nadh Dehydrogenase ◽  
Molar Absorption Coefficient ◽  
Effect Of Temperature ◽  
Thermus Aquaticus ◽  
Membrane Bound ◽  
The Stability

A soluble NADH dehydrogenase (NADH:ferricyanide oxidoreductase) has been obtained by simple disruption of cells of Thermus aquaticus strain T351, and purified. The enzyme is of low molecular mass, 50 000 Da, and displays many of the properties of the membrane-bound enzyme, including inhibition by both NADH and ferricyanide, and the same Km for ferricyanide. The enzyme contains 0.05 mol of FMN, 0.16 mol of labile sulphur and 2.2 mol of iron per mol of protein. The enzyme is inhibited by NAD and cupferron competitively with ferricyanide, and by ATP (but not ADP) competitively with NADH. The enzyme is particularly thermostable, having a half-life at 95 degrees C of 35 min. The effect of temperature on the molar absorption coefficient and the stability of NADH was determined.

The determination of ammonia in sea water

1967 ◽  
Vol 47 (2) ◽  
pp. 271-280 ◽  
Author(s):  
B. S. Newell
Keyword(s):  
Absorption Coefficient ◽  
Sea Water ◽  
Molar Absorption Coefficient ◽  
English Channel ◽  
Precise Method ◽  
Chloramine T ◽  
Oxidation Of Ammonia

A sensitive, specific and precise method for the determination of ammonia in sea water is presented. The method depends upon the oxidation of ammonia by chloramine-T and subsequent coupling with phenol to produce indophenol blue in an n-hexanol extract. Molar absorption coefficient ca 84,000. Values of ammonia measured in samples from the English Channel are given and the effect of freezing on samples for ammonia analysis is discussed.

High activity of aluminated bifunctional mesoporous silica nanoparticles for cumene hydrocracking and measurement of molar absorption coefficient

2015 ◽  
Vol 39 (10) ◽  
pp. 8006-8016 ◽  
Author(s):  
Mohammad Reza Sazegar ◽  
Sugeng Triwahyono ◽  
Aishah Abdul Jalil ◽  
Rino R. Mukti ◽  
Seyed Mohammad Seyed Mohaghegh ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Absorption Coefficient ◽  
Silica Nanoparticles ◽  
High Activity ◽  
Lewis Acid ◽  
Mesoporous Silica Nanoparticles ◽  
Acid Sites ◽  
Molar Absorption Coefficient ◽  
Lewis Acid Sites ◽  
Brønsted And Lewis Acid

Pt/HAlMSN synthesized with Si/Al ratios = 7–50 showed high activity in cumene hydrocracking due to the Brønsted and Lewis acid sites.

scholarly journals Photophysical Challenges and Antenna Effect Between Click Reaction-based Bodipy Derivatives Manufactured From Knorr Pyrrole

2021 ◽  
Author(s):  
ahmed nuri kursunlu ◽  
Akif Kagan Yilmaz ◽  
Elif Bastug ◽  
Ersin Guler
Keyword(s):  
Energy Transfer ◽  
Quantum Yield ◽  
Absorption Coefficient ◽  
Organic Solvents ◽  
Click Reaction ◽  
Photophysical Properties ◽  
Molar Absorption Coefficient ◽  
Antenna Effect ◽  
Preliminary Study

Abstract In this paper, a series of click reaction-based Bodipy derivatives have been synthesized as part of a preliminary study. Following the characterization of the four challenger molecules, the photophysical properties (absorption, emission, excitation, molar absorption coefficient, quantum yield, etc.) were examined in various organic solvents. The results showed that the energy transfer from the Bodipy cores to other moieties was calculated between 71% and 93% depending on different π-electron configurations and chromophore groups.

Experimental Determination of the Molar Absorption Coefficient of n -Hexane Adsorbed on High-Silica Zeolites

ChemPhysChem ◽  
2017 ◽  
Vol 18 (17) ◽  
pp. 2374-2380 ◽  
Author(s):  
Giorgio Gatti ◽  
Diana F. Olivas Olivera ◽  
Vittoria Sacchetto ◽  
Maurizio Cossi ◽  
Ilaria Braschi ◽  
...  
Keyword(s):  
Absorption Coefficient ◽  
Experimental Determination ◽  
Molar Absorption Coefficient ◽  
High Silica ◽  
High Silica Zeolites

Phthalocyanines-based photoacoustic contrast agents for imaging and theranostics

2021 ◽  
Author(s):  
Bing-De Zheng ◽  
Jing Ye ◽  
Yayan Huang ◽  
Meitian Xiao
Keyword(s):  
Absorption Coefficient ◽  
Contrast Agents ◽  
Near Infrared ◽  
Organic Dye ◽  
Molar Absorption Coefficient

Phthalocyanine, as an organic dye, has attracted much attention due to its high molar absorption coefficient in the near-infrared (NIR) region. It is precisely because of this advantage that phthalocyanine...

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