Nondestructive egg freshness assessment of air chamber diameter by VIS-NIR spectroscopy

2018 ◽  
Author(s):  
Xiaoguang Dong ◽  
Xiuying Tang ◽  
Jun Dong ◽  
Zhixiong Shen ◽  
Yanlei Li ◽  
...  
Keyword(s):  
Nir Spectroscopy ◽  
Air Chamber ◽  
Chamber Diameter ◽  
Egg Freshness

Research on the Micro Self-Vibration of Aerostatic Bearing with Pocketed Orifice Type Restrictor

2013 ◽  
Vol 333-335 ◽  
pp. 2076-2079 ◽  
Author(s):  
Hong Xia Zhu ◽  
Yingxiao Lin ◽  
Jing Yi Zhao
Keyword(s):  
Fluid Dynamics ◽  
Orifice Diameter ◽  
Aerostatic Bearing ◽  
Eddy Simulation ◽  
Air Chamber ◽  
Large Eddy ◽  
Ultra Precision ◽  
Computational Fluid Dynamics Cfd ◽  
The Relationship ◽  
Chamber Diameter

In this paper, Computational Fluid Dynamics (CFD) is used to analyze the micro self-vibration of aerostatic bearing with pocketed orifice type restrictor as the bearings performance is stable and it is widely used ultra-precision equipments. By using Large Eddy Simulation (LES), time-variation flow field inside the bearing is obtained. Then the pressure fluctuation characteristics is discussed because it influences the micro self-vibration of the bearing directly. Moreover, the relationship between bearing diameter, orifice diameter, air chamber diameter, air chamber depth and the micro self-vibration is researched. The results can be considered for the designing of ultra-precision aerostatic bearing with pocketed orifice type restrictor.

scholarly journals Egg Freshness Evaluation Using Transmission and Reflection of NIR Spectroscopy Coupled Multivariate Analysis

Foods ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 2176
Author(s):  
Fuyun Wang ◽  
Hao Lin ◽  
Peiting Xu ◽  
Xiakun Bi ◽  
Li Sun
Keyword(s):  
Near Infrared ◽  
Nir Spectroscopy ◽  
Storage Conditions ◽  
Transmission Measurement ◽  
Atmospheric Conditions ◽  
Analysis Model ◽  
Linear Discriminant ◽  
Diffuse Transmission ◽  
Egg Freshness ◽  
Transmission And Reflection

This work presents a novel work for the detection of the freshness of eggs stored at room temperature and refrigerated conditions by the near-infrared (NIR) spectroscopy and multivariate models. The NIR spectroscopy of diffuse transmission and reflection modes was used to compare the quantitative and qualitative investigation of egg freshness. It was found that diffuse transmission is more conducive to the judgment of egg freshness. The linear discriminant analysis model (LDA) for pattern recognition based on the diffuse transmission measurement was employed to analyze egg freshness during storage. NIR diffuse transmission spectroscopy showed great potential for egg storage time discrimination in normal atmospheric conditions. The LDA model discrimination rated up to 91.4% in the prediction set, while only 25.6% of samples were correctly discriminated among eggs in refrigerated storage conditions. Furthermore, NIR spectra, combined with the synergy interval partial least squares (Si-PLS) model, showed excellent ability in egg physical index prediction under normal atmospheric conditions. The root means square error of prediction (RMSEP) values of Haugh unit, yolk index, and weight loss from predictive Si-PLS models were 4.25, 0.031, and 0.005432, respectively.

Rapid nondestructive qualitative discrimination of egg freshness by VIS/NIR spectroscopy

2019 ◽  
Author(s):  
Zhixiong Shen ◽  
Xiuying Tang ◽  
Zhengxuan Li ◽  
Jun Dong ◽  
Xiaoguang Dong ◽  
...  
Keyword(s):  
Nir Spectroscopy ◽  
Egg Freshness

Quantification of polyphenols in powdered Actaea racemosa (black cohosh) rhizomes by NIR spectroscopy

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
M Bittner ◽  
A Kraehmer ◽  
MF Melzig
Keyword(s):  
Nir Spectroscopy ◽  
Black Cohosh ◽  
Actaea Racemosa

EULER-LAGRANGE 3D SIMULATION OF ETHANOL INJECTED IN A QUIESCENT AIR CHAMBER

2019 ◽  
Author(s):  
Bruno Silva de Lima ◽  
Rafael Silva de Lima ◽  
Francisco Souza
Keyword(s):  
3D Simulation ◽  
Air Chamber
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