Determination of acid value during edible oil storage using a portable NIR spectroscopy system combined with variable selection algorithms based on an MPA ‐based strategy

2020 ◽  
Author(s):  
Hui Jiang ◽  
Yingchao He ◽  
Quansheng Chen
Keyword(s):  
Variable Selection ◽  
Nir Spectroscopy ◽  
Acid Value ◽  
Edible Oil ◽  
Oil Storage ◽  
Spectroscopy System ◽  
Selection Algorithms

Portable spectroscopy system determination of acid value in peanut oil based on variables selection algorithms

Measurement ◽  
2017 ◽  
Vol 103 ◽  
pp. 179-185 ◽  
Author(s):  
Mingxiu Yang ◽  
Quansheng Chen ◽  
Felix Y.H. Kutsanedzie ◽  
Xiaojing Yang ◽  
Zhiming Guo ◽  
...  
Keyword(s):  
Acid Value ◽  
Peanut Oil ◽  
Variables Selection ◽  
Spectroscopy System ◽  
Selection Algorithms

Prediction of amino acids, caffeine, theaflavins and water extract in black tea using FT-NIR spectroscopy coupled chemometrics algorithms

2018 ◽  
Vol 10 (25) ◽  
pp. 3023-3031 ◽  
Author(s):  
Muhammad Zareef ◽  
Quansheng Chen ◽  
Qin Ouyang ◽  
Felix Y. H. Kutsanedzie ◽  
Md. Mehedi Hassan ◽  
...  
Keyword(s):  
Amino Acids ◽  
Variable Selection ◽  
Water Extract ◽  
Nir Spectroscopy ◽  
Black Tea ◽  
Selection Algorithms

We have described the in situ prediction of amino acids, caffeine, theaflavins and water extract in black tea using FT-NIR coupled various variable selection algorithms.

Reasons for the formation of crack-like defects in 09Г2С heavy plate steel for tank steel structures

2020 ◽  
Vol 10 (5) ◽  
pp. 479-489
Author(s):  
Vitaly М. Goritsky ◽  
◽  
Georgy R. Shneyderov ◽  
Eugeny P. Studenov ◽  
Olga A. Zadubrovskaya ◽  
...  
Keyword(s):  
Impact Toughness ◽  
Defect Formation ◽  
Steel Structures ◽  
Controlled Rolling ◽  
Plate Steel ◽  
Heavy Plate ◽  
Oil Storage ◽  
Magnetic Inspection ◽  
Metal Microstructure

Determination of causes of crack-like defects in the heavy plate steel 09Г2С is a crucial task, the solution of which is aimed at improving the mechanical safety of oil storage steel vertical tanks. In order to determine the causes for the formation of a group of crack-like defects oriented towards rolling, revealed during grinding and magnetic inspection of the tank wall surface near the vertical weld, the analysis of the chemical composition and testing of the mechanical properties of heavy plate steel were carried out, including the determination of the anisotropy of impact toughness in the temperature range from +20 to –75 °С, analysis of metal microstructure in the area of defect formation on transversal sections and rolled surface. Impact bending tests of 09Г2С heavy plate steel after controlled rolling in longitudinal and transverse directions showed no anisotropy of impact toughness, as well as high purity of steel as for sulfur and titanium, which at higher content causes impact toughness anisotropy. The revealed features of metal microstructure near the defects made it possible to conclude that the crack-like defects were formed during the rolling of gas bubbles at the stage of preparing semi-finished rolled products for finishing rolling. One of the possible methods to prevent such defects from getting into finished rolled products is the use of automated systems of visual inspection of rolled products in the manufacturing process.

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