Results 241 to 250 of about 258,875 (317)
Some of the next articles are maybe not open access.

Characterizing asphalt aging behaviors and rheological properties based on spectrophotometry

, 2020
In order to achieve better reuse of asphalt, it is necessary to quantitatively characterize the aging degree of asphalt. Conventional methods such as Dynamic Shear Rheometer (DSR), Fourier Transform Infrared Spectroscopy (FTIR), and Gel Permeation ...
Xiangdao Hou   +4 more
semanticscholar   +1 more source

Identification of asphalt aging characterization by spectrophotometry technique

Fuel, 2018
During the construction and service life of asphalt pavement, the bituminous material is inevitably exposed to sunlight, oxygen, water, ambient temperature and other climate conditions, which lead to aging or oxidation of asphalt binder and thus ...
Xiangdao Hou   +3 more
semanticscholar   +1 more source

Absorption spectrophotometry

Talanta, 1980
A review is given of the development of spectrophotometers from the earliest models to the latest microprocessor instruments with photodiode detection systems.
J R, Majer, A S, Azzouz
openaire   +2 more sources

Application of spectrophotometry on detecting asphalt content of emulsified asphalt

Journal of Cleaner Production, 2019
As an environmental friendly technology, emulsified asphalt can effectively reduce the energy consumption and emission during the road construction and has become an effective way to achieve the sustainable development of road engineering.
Xiangdao Hou   +5 more
semanticscholar   +1 more source

Measurement of the degree of deacetylation in chitosan films by FTIR, 1H NMR and UV spectrophotometry

MethodsX
The chitosan films were prepared from shrimp, squid, and crab to corroborate that regardless of the source of the chitosan, it was possible to measure the degree of deacetylation. In this work, the degree of deacetylation of chitosan was evaluated via UV,
D. I. Sánchez-Machado   +5 more
semanticscholar   +1 more source

Spectrophotometry

open access: yes, 2010
A learning object that describes the basic principles of ...
J. Koenig
openaire   +2 more sources

Differential spectrophotometry

Talanta, 1966
The principles of various methods of differential spectrophotometry are briefly discussed. Practical problems connected with the measurements are presented and analytical applications so far available are reviewed.
openaire   +2 more sources

Use of UV-Vis Spectrophotometry for Characterization of Carbon Nanostructures: a Review

Theoretical and Experimental Chemistry, 2021
M. Abdolkarimi-Mahabadi   +2 more
semanticscholar   +1 more source

Spectrophotometry

2017
Darkening patches on the skin can result in great distress for the patient. However, definitive diagnosis between the many possible causes and effective treatment can be very hard for the medical practitioner to achieve. This is the first major professional reference with systematic coverage of diagnosis and the various treatment options, and it will ...
Pampena Riccardo, Longo C
openaire   +2 more sources

Colorimetry by Abridged Spectrophotometry

Journal of the Optical Society of America, 1949
It seems to be generally conceded that the results obtained with a photoelectric colorimeter are significant only when the spectral characteristics of the sample and standard are similar. When this is the case, the selected ordinate method of integrating spectrophotometric data can be greatly abridged, a single selected ordinate being adequate under ...
A C, HARDY, F M, YOUNG
openaire   +2 more sources

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