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E. N. Sgourou, N. Sarlis, A. Chroneos and C. A. Londos
Defects and impurities play a fundamental role in semiconductors affecting their mechanical, optical, and electronic properties. Nitrogen (N) impurities are almost always present in a silicon (Si) lattice, either unintentionally, due to the growth and pr...
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Andrei Zaharia, Valentin Nedeff, Juan A. López-Ramírez, Emilian Mo?negu?u, Narcis Bârsan, Mirela Lehadus-Panaite, Jamroziak Krzysztof and Claudia Tomozei
In recent years, more and more emphasis has been placed on the use of home filtration systems as a coarse pre-filtration step. The PP (polypropylene) filter cartridge is one of the most common of these systems, with the role of retaining solid suspension...
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Weidong Cao, He Wang and Jian Tang
Guide vane submersible centrifugal pumps are a kind of submersible pump, and the fluid inside the pump is often mixed with gravel and other impurities during operation, affecting the pump?s operating efficiency and life expectancy. However, past studies ...
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Judith Miriam Friebel, Diana Neuber, Thomas Buchwald, Ralf Ditscherlein and Urs Alexander Peuker
This study presents a new approach in the quantification of the deposited amount of impurity inside a filter cake made up of filter aid material. For this purpose, three-dimensional imaging by X-ray tomography is applied. Based on the X-ray attenuation p...
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George P. Balayiannis and Helen Karasali
N-nitrosamines are a class of carcinogenic chemical compound. Considering the large-scale application of agrochemicals globally, the elimination of N-nitrosamines from pesticides should be a priority for manufacturers and regulators. A set of methods was...
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Ralf Gottschall, Maria Thelen-Jüngling, Martin Kranert and Bertram Kehres
In this study, the suitability of biowaste and green waste composts in organic farming is presented based on quality assurance data of approximately 21,000 compost analyses from 2015 to 2020. The evaluation of compost suitability was based on both the le...
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Kamil Jurowski and Miroslaw Krosniak
Potential heavy metal impurities (HMI) in pharmaceuticals/pharmaceutical products/drugs based on plant raw materials (e.g., herbs) are an important problem in the pharmaceutical industry; however, there is a lack of scientific articles on the comprehensi...
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Jing Han, Junxian Guo, Zhenzhen Zhang, Xiao Yang, Yong Shi and Jun Zhou
Herein, we propose a new method based on Fourier-transform near-infrared spectroscopy (FT-NIR) for detecting impurities in seed cotton. Based on the spectral data of 152 seed cotton samples, we screened the characteristic wavelengths in full-band spectra...
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Jianming Kang, Chenshuo Xie, Qiangji Peng, Nannan Wang, Xiaoyu Wang and Yaoli Zhang
A tumbler screen-type residual film?impurity mixture wind separator is the key equipment for the secondary utilization of farmland residual film. During its operation, the proportion of impurities in the separated waste mulch film intermittently increase...
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Sana Jebali, Mahdi Meftah, Chadha Mejri, Abdesslem Ben Haj Amara and Walid Oueslati
The photocatalytic degradation process and absorption kinetics of the aqueous solution of the Cibacron Brilliant Yellow 3G-P dye (Y) were investigated under UV-Vis light. Pure barium titanate BaTiO3 (BT) and cobalt ion-substituted barium Ba1-xCoxTiO3 (x ...
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