Article
Chemistry, Analytical
Mai Matsueda, Marco Mattonai, Itsuko Iwai, Atsushi Watanabe, Norio Teramae, William Robberson, Hajime Ohtani, Young-Min Kim, Chuichi Watanabe
Summary: This paper describes the preparation of a reference polymer mixture for microplastics analysis in environmental samples using Py-GC-MS, and evaluates its performance. The results show that the proposed mixture can serve as a reliable reference material for at least nine of the investigated polymers, with good reproducibility and linearity of response.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Biochemical Research Methods
Younis Abiedalla, C. Randall Clark
Summary: The electron ionization (EI)-mass spectroscopy (MS) fragmentation of methoxymethylene substituted benzoate esters was studied. The aliphatic oxygen of the alkoxymethylene group plays a more active role in the fragmentation profile compared to the direct aromatic ring linked oxygen of the ethoxy group.
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
(2023)
Article
Chemistry, Applied
Bing Lyu, Xiaoyan Zhang, Jingguang Li, Lei Zhang, Yuxin Zhong, Yongning Wu
Summary: The present study evaluated two GC-MS/MS instruments with different ion sources for detecting trace levels of PCDD/Fs in various foods. The GC-MS/MS methods showed good sensitivity, repeatability, and reproducibility, and the results were comparable to those obtained with GC-HRMS.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Chemistry, Applied
Milan S. Dekic, Niko S. Radulovic, Enisa S. Selimovic, Fabio Boylan
Summary: This study conducted a comprehensive data collection of diastereomeric menthol esters, identifying frequent misidentification issues in the literature. By providing detailed data and analysis methods, it offers a useful tool for food compound analysis.
Article
Chemistry, Analytical
Chao Han, Chaoqun Huang, Qinting Jiang, Li Chen, Yi Li, Chengjie Lou, Hailing Lu, Yan Shen
Summary: A novel and accurate method for the determination of folpet and phthalimide residues in tea has been developed, using solid-phase extraction combined with gas chromatography-tandem mass spectrometry. The method proposes converting all folpet to phthalimide prior to sample extraction and purification, and utilizes an isotopic internal standard for quantification. The study confirms the accurate determination of phthalimide content and its conversion to folpet content.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Applied
Mu Zhao, Ting Li, Fan Yang, Xinyue Cui, Tingting Zou, Huanlu Song, Ye Liu
Summary: This study characterized the composition of volatile aroma compounds and key aroma-active compounds in dried Hanyuan Zanthoxylum bungeanum. The results identified several key aroma-active compounds such as myrcene and limonene.
Article
Chemistry, Applied
Xuejie Li, Xiangquan Zeng, Huanlu Song, Yu Xi, Yan Li, Bowen Hui, He Li, Jian Li
Summary: GC x GC-O-TOF-MS and GC-IMS have been increasingly used in complex food flavor analysis, but few studies have applied these techniques to identify the aroma components of tomato pastes. This study comprehensively characterized the aroma profiles of cold and hot break tomato pastes using SAFE-GC-O-MS, SAFE-GC x GC-O-TOF-MS, and HS-GC-IMS for the first time. A total of 274 volatile compounds were identified, which is far more than previously reported.
Article
Chemistry, Applied
Yanqin Yang, Jialing Xie, Qiwei Wang, Yuliang Deng, Li Zhu, Jiayi Zhu, Haibo Yuan, Yongwen Jiang
Summary: This study comprehensively characterized the volatile and non-volatile compounds during black tea processing using volatolomics and UHPLC-Q-Exactive/MS analysis. The results showed that these metabolites changed continuously throughout the processing process, with significant changes during the withering stage. A total of 178 volatile metabolites and 103 non-volatile metabolites were identified, and 11 volatile components were identified as key aroma active components responsible for sweet aroma in finished black tea.
Article
Energy & Fuels
Luise Carvalho Dias, Karina Santos Garcia, Antonio Fernando de Souza Queiroz, Maria Elisabete Machado
Summary: This study presents and validates a novel GC-MS/MS method for the determination of nitrogen-containing heterocyclic aromatic compounds in crude oils, showcasing its potential for fast, easy, and efficient quantitative analysis of N-markers.
Article
Food Science & Technology
Chao Han, Beizhen Hu, Chaoqun Huang, Wenhua Zhang, Huizhen Wu, Caiqin Liu, Qiyong Chen, Yan Shen
Summary: A new analytical method involving gas chromatography-tandem mass spectrometry (GC-MS/MS) was developed for the determination of morpholine residues in fruit and fruit juice samples. The method showed good precision and accuracy and can be widely applied in food safety monitoring.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Zi-Feng Zhang, Jia-Cheng Chen, Ya-Xian Zhao, Lu Wang, Yu-Qian Teng, Ming-Hong Cai, Yan-Hui Zhao, Anatoly Nikolaev, Yi-Fan Li
Summary: Polycyclic aromatic hydrocarbons (PAHs) are toxic organic pollutants that have been widely detected in various regions and environmental matrices. However, not all PAHs are usually detected, and there is no established method to systematically analyze hundreds of PAHs. In this study, a gas chromatography-tandem triple-quadrupole mass spectrometry (GC-MS/MS) method was developed and successfully applied to identify and quantify 123 PAHs in marine samples.
Article
Engineering, Chemical
Muhammad Yaseen, Muhammad Ullah, Sidra Subhan, Waqas Ahmad, Fazle Subhan, Muhammad Shakir
Summary: This study successfully extracted useful hydrocarbons from used engine oil through solvent extraction and column separation, developing a highly efficient and cost-effective extraction strategy as a promising alternative to conventional burning and reclamation of oil. The process demonstrated high efficiency and cost-effectiveness, suggesting potential for extraction of other valuable compounds from used oils and mitigating environmental pollution on a larger scale.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Multidisciplinary Sciences
Lubna Rahman, Asma Mukhtar, Sajjad Ahmad, Lutfur Rahman, Muhammad Ali, Muhammad Saeed, Zabta Khan Shinwari
Summary: The current study aimed to isolate and identify bioactive compounds from endophytic bacteria. Molecular docking and biological assays were used to investigate the interactions between the compounds and bacterial cells. The study discovered antibacterial compounds and provided important information on drug-receptor interactions, which can be useful in novel drug discovery.
Article
Chemistry, Applied
Fabio Xavier Antunes Sampaio, Karina Santos Garcia, Antonio Fernando de Souza Queiroz, Maria Elisabete Machado
Summary: Organic sulfur compounds in crude oils are important geochemical markers for maturity, lithology, and biodegradation. This study developed a gas chromatography-triple quadrupole mass spectrometry method for the determination of 14 organic sulfur compounds without preliminary fractionation, providing a precise and accurate analytical strategy.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Food Science & Technology
Xiaobei Li, Yanmei Zhang, E. Hengchao, Xiangwei He, Jianying Li, Xiaoyan Zhao, Changyan Zhou
Summary: This study aimed to investigate the volatile profiles of M. sextelata under three dehydration methods: freeze, hot air, and natural air drying. It was found that comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry was the best choice to differentiate the volatile profiles. Freeze-dried samples had the most abundant volatile compounds, while hot air-drying promoted the production of compounds with roasted flavor and natural air-drying resulted in unpleasant acids releasing.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Engineering, Chemical
Guodong Kong, Lili Fan, Lei Zhao, Yang Feng, Xiaolei Cui, Jia Pang, Hailing Guo, Haixiang Sun, Zixi Kang, Daofeng Sun, Svetlana Mintova
Summary: This study demonstrated the improvement of dye nanofiltration membrane performance by embedding ultra-small EMT zeolite nanocrystals into thin-film composite membranes. The developed high-quality TFN membranes containing zeolite nanocrystals showed great potential for dye separation applications.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Mechanical
Ju Guo, Xiao-Lei Cui, Wen-Kai Zhao, Cheng-Zhong Chi, Xiao-Qing Cao, Peng Lin
Summary: Proper pulse current parameters can effectively improve the elongation of AZ31B magnesium alloy sheet, and the strain of the sample is closely related to temperature distribution. Grain growth and dynamic recrystallization were observed on the AZ31B magnesium alloy sheet under intermittent pulse current, leading to changes in fracture morphology.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2022)
Article
Engineering, Chemical
Jia Pang, Xiaolei Cui, Yang Feng, Zhenji Guo, Guodong Kong, Liting Yu, Caiyan Zhang, Rongming Wang, Zixi Kang, Daofeng Sun
Summary: The study demonstrates the successful fabrication of stable GO membranes in water environment by incorporating beta-cyclodextrin and trimesoyl chloride, which efficiently remove dyes and salts with enhanced sieving effect and stability. The GO membranes prepared through this multiple plug-ins strategy show promising potential for nanofiltration processes to remove dyes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
Rui Li, Zebang Zheng, Mei Zhan, Hongrui Zhang, Xiaolei Cui, Yudong Lei
Summary: The applicability of eight uncoupled ductile fracture criteria was systematically studied and their predictive capabilities were compared and analyzed through numerical simulation and experimental comparison under various stress states.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Biochemistry & Molecular Biology
Xiaolei Cui, Yingping Tian, Yapei Zhao, Hengbo Gao, Dongqi Yao, Liang Liu, Yongjun Li
Summary: miR-199b-5p plays a role in mitochondrial dynamics and endothelial apoptosis. It exerts its effects through the regulation of the AKAP1/DRP1 pathway. Downregulation of miR-199b-5p and excessive mitochondrial fission were also observed in human coronary AS endothelial tissues.
CURRENT PHARMACEUTICAL BIOTECHNOLOGY
(2022)
Article
Automation & Control Systems
Hongrui Zhang, Mei Zhan, Zebang Zheng, Rui Li, Fei Ma, Xiaolei Cui, Shuwan Chen, Yudong Lei
Summary: Spin forming is used to manufacture large-diameter thin-walled complex curved surface components using tailor-welded blanks produced from small alloy plates. This study investigated three spin forming schemes and found that the rolling of the rollers during spin forming can improve wall thickness inhomogeneity and surface roughness. By increasing spinning passes, the forming height, open diameter, and weld deflection angle of components increased, leading to improved unfitability and surface quality. An improved spin forming scheme was proposed, resulting in significantly increased forming height, decreased unfitability, improved surface quality, and ideal spun components.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Hongrui Zhang, Mei Zhan, Zebang Zheng, Rui Li, Wei Lyu, Xiaolei Cui, Shuwan Chen, Shijun Shen
Summary: The novel hybrid manufacturing technique of friction stir welding and spinning offers a promising approach for forming large-diameter thin-walled axisymmetric components while minimizing process scrap. The welding seam movement during spinning restricts plastic deformation, but results in increased microhardness and strength in the components. This technique provides a potential route for sustainability in the recycling and remanufacturing of aluminum alloys.
Article
Engineering, Mechanical
Xiao-Lei Cui, Ju Guo, Shi-Yu Wen, Xiu-Min Wu, Peng Lin
Summary: The main purpose of this paper is to investigate the wrinkling behavior of thin-walled tubes under axial compression in a non-uniform temperature field created by induction heating. The study combines experiments and simulations to analyze the distribution of the temperature field and the wrinkling behavior of the tubes. The results reveal that axisymmetric wrinkles can form under axial compression in the non-uniform temperature field, with the width decreasing and the height increasing as the axial compression increases.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2023)
Article
Forestry
Xiaolei Cui, Mengting Ge, Xiwei Shen
Summary: This study introduces a comprehensive evaluation method to assess the competitive performance of new product development in outdoor wooden furnishing, aiming to minimize the risk of product failure. The method includes constructing evaluation criteria, trapezoidal fuzzy analytic hierarchy process, and a comprehensive evaluation model. A case study demonstrates the objective and comprehensive prediction of product performance in development.
Article
Computer Science, Information Systems
Xiaolei Cui, Jianzhong Xu
Summary: This study proposes a threshold model using small world customer relationship network and variable setting to reveal the influence mechanism of e-banking channel selection of elderly customers. The research shows that channel performance and individual differences of customers affect the adoption of e-banking by elderly customers, and network size and network density can regulate the impact of channel performance on the selection behavior of elderly groups.
JOURNAL OF ORGANIZATIONAL AND END USER COMPUTING
(2022)
Article
Engineering, Civil
Xiao-Lei Cui, Ju Guo, Yuanyang Zhao, Peng Lin
Summary: This paper investigates the issue in the hydroforming process of a thin-walled tubular component with multiple local bulges and proposes a novel method to solve it by preforming wrinkles using selective induction heating. The experimental results show that the presence of wrinkles can increase the ultimate expansion ratio of the tube blank. The process parameters for prefabricating wrinkles are determined through detailed experiments. Finally, a successful hydroforming of the tubular component with multiple local bulges is achieved using the wrinkled tube blank.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Social Sciences, Interdisciplinary
Jianzhong Xu, Xiaolei Cui
Summary: This dissertation analyzes the characteristics of signals sent between banks and customers in an omni-channel environment and proposes a game model to explore its influence on both parties' action decisions. A genetic algorithm is developed to improve the adaptability of customers and determine the most effective signal. A case study on Agricultural Bank of China further validates the research results. Overall, this study provides a quantitative tool for decision-making and optimization in the bank-customer relationship in an omni-channel environment.
Article
Materials Science, Multidisciplinary
Xiao-Lei Cui, Yang Yan, Jiuqiang He, Cong Han
Summary: This article proposes a method to regulate the deformation and dimensional accuracy of tubular components by controlling the forming pressure during hydroforming process. The study found that the clamping force and internal pressure can cause expansion and flattening of the die cavity, thus affecting the cross-sectional dimensions of the rectangular tubes. Further experiments showed that under appropriate forming pressure, the expansion deformation of the die cavity can compensate for springback, resulting in more accurate dimensions of the tubular components.
Article
Chemistry, Multidisciplinary
Xiaolei Cui, Zixi Kang, Weidong Fan, Jia Pang, Yang Feng, Caiyan Zhang, Liting Yu, Shuo Liu, Xiuxian Tang, Lili Fan, Rongming Wang, Daofeng Sun
Summary: The introduction of ionic liquids (ILs) can enhance the selective adsorption and separation of CO2, improving the performance of MOF monomer based membranes. By utilizing a simple post-modification strategy, ILs are used to fill the interspaces of MOF monomer based membranes, resulting in improved CO2/CH4 sieving performance. The interaction between ILs and the membrane contributes to the stability of the separation process.
MATERIALS CHEMISTRY FRONTIERS
(2022)