Article
Food Science & Technology
C. Quintelas, A. Braga, A. Cordeiro, E. C. Ferreira, I Belo, R. N. M. J. Pascoa
Summary: The valorization of glycerol wastes through biotechnological processes is promising due to the high glycerol generated from bio-diesel industry. FT-NIR spectroscopy was effectively used for monitoring biomass, glycerol, L-phenylalanine, and 2-PE during biotechnological production. The developed PLS models showed good predictive accuracy, attesting the suitability of FT-NIR spectroscopy for quantification in this process.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Chemical
Marietta Fodor
Summary: The FT-NIR technique was applied to determine the ripeness of sweet cherry and sour cherry rapidly and non-destructively. Titratable acidity, water-soluble total solids, total anthocyanin content, and calculated maturity index were used as reference values. The study validated the PLS correlations through cross-validation and test-validation methods and performed different discriminant analyses and support vector machine classifications. Quadratic discriminant analysis was found to be the best pattern recognition method. Additionally, a maturity degree was developed for accurate classification of mature and immature samples.
Article
Food Science & Technology
Vicky Caponigro, Federico Marini, Amalia G. M. Scannell, Aoife A. Gowen
Summary: This study compares the efficacy of Raman, FT-NIR, and FT-MIR spectral imaging techniques in quantifying lactose concentration in dried whole milk on different metallic surfaces. The results demonstrate that spectral imaging can rapidly quantify lactose concentration without the need for standard references.
Article
Spectroscopy
M. Alaoui Mansouri, M. Kharbach, M. El Maouardi, I. Barra, A. Bouklouze
Summary: This study quantified ciprofloxacin in commercial tablets using FT-NIR and chemometric models. Matrix variation caused by different excipient compositions could affect accuracy. Single models combining data from multiple sets were developed to address matrix variation. PLS and MCR-ALS models showed promising results but were still influenced by the presence of different excipients.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Applied
Laurence Souza Vieira, Camila Assis, Maria Eliana Lopes Ribeiro de Queiroz, Antonio Augusto Neves, Andre Fernando de Oliveira
Summary: This study successfully developed a model using FT-NIR and PLS-DA to efficiently distinguish the authenticity of extra virgin olive oil and differentiate adulterated samples. Different models showed strong performance in classifying olive oils and various types of adulterants, with high accuracy and specificity values. Reliable and robust models were built allowing for differentiation between seven adulterants and genuine extra virgin olive oils.
Article
Chemistry, Analytical
Mohammed Alaoui Mansouri, Eric Ziemons, Pierre-Yves Sacre, Mourad Kharbach, Issam Barra, Yahia Cherrah, Philippe Hubert, Roland Djang'eing'a Marini, Abdelaziz Bouklouze
Summary: The study aimed to test the ability of vibrational spectroscopy techniques to differentiate between different polymorphic forms of fluconazole in pharmaceutical products. Results showed that combining FT-IR or FT-NIR with PLS-DA had high efficiency and selectivity in classifying fluconazole polymorphs.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2021)
Article
Food Science & Technology
Ragya Kapoor, Amir Malvandi, Hao Feng, Mohammed Kamruzzaman
Summary: This study aimed to explore the commercial applications of fruit and vegetable powders as edible coatings to enhance various functional and nutritional characteristics of apple slices. The results showed that miniature NIR spectroscopy was able to effectively monitor the drying process and discriminate between coated and uncoated apple slices based on differences in sugar and water absorption bands.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Chemical
D. Castro-Reigia, I. Garcia, S. Sanllorente, L. A. Sarabia, J. M. Amigo, M. C. Ortiz
Summary: This study aims to develop an efficient technology using near infrared spectroscopy and partial least squares discriminant analysis to determine the fermentation state of bread loaves in the bakery industry. A new methodology is proposed to replicate the knowledge of a Master Baker through a NIR spectrometer. The results demonstrate high sensitivity and specificity in predicting the fermentation state of dough.
JOURNAL OF FOOD ENGINEERING
(2024)
Article
Biochemical Research Methods
Lian Li, Zhi-Tian Zuo, Yuan-Zhong Wang
Summary: This study successfully identified the geographical traceability of different parts of Wolfiporia cocos using two-dimensional correlation spectroscopy and multivariate statistical analysis methods such as residual convolutional neural network and partial least square discriminant analysis. The results showed that synchronous SD 2DCOS was more suitable for identifying complex mixed systems. These methods can provide technical support for the identification and quality evaluation of herbal geographical origins.
PHYTOCHEMICAL ANALYSIS
(2022)
Article
Food Science & Technology
Ji Hye Lee, Jae Min An, Ho Jin Kim, Hee Chang Shin, Suel Hye Hur, Seong Hun Lee
Summary: This study developed a routine model using FT NIRS data and PLS analysis to discriminate between domestically grown soybeans and imported soybeans. By collecting a large number of samples and expanding the database, the predictive accuracy of the model was improved. The method is simple and does not require complicated pretreatment, making it suitable for preventing food fraud.
FOOD ANALYTICAL METHODS
(2022)
Article
Engineering, Electrical & Electronic
Guoqing Mu, Tao Liu, Junghui Chen, Chao Shang, Chongquan Zhong
Summary: A semi-supervised calibration model is proposed to measure the moisture content of granules during the industrial fluidized bed drying process using near-infrared spectroscopy. The model utilizes both labeled and unlabeled spectra to overcome the lack of labeled samples in batch FBD processes. An adaptive Gamma distribution-based sparsing algorithm is used to select spectral variables for modeling and overcome high-dimensional input collinearity.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Materials Science, Paper & Wood
Petter Stefansson, Thomas Thiis, Lone Ross Gobakken, Ingunn Burud
Summary: This research developed a method to estimate the spatially and temporally resolved moisture content of thermally modified Scots pine using hyperspectral time series imaging and partial least squares regression. By spatially segmenting the images to separate early- and latewood regions, a model for modeling the average moisture content of thermally modified pine was established.
WOOD MATERIAL SCIENCE & ENGINEERING
(2021)
Article
Agronomy
Te Ma, Jian Zhao, Tetsuya Inagaki, Yuan Su, Satoru Tsuchikawa
Summary: This paper presents an evaluation of kiwifruit properties using a visible-near-infrared spectroscopic system. The study shows that firmer kiwifruits have higher degrees of light scattering inside. Calibration models were constructed to predict fruit firmness and soluble solids content using the system.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2022)
Article
Food Science & Technology
Chunhua Dai, Xueting Xu, Wei Huang, Pengfei Yan, Yizhi Hou, Ronghai He, Haile Ma
Summary: This study combines near infrared spectroscopy and chemometrics to monitor critical process parameters in the thermophilic solid-state fermentation of soybean meal. The established siPLS models can accurately predict pH, moisture, soluble protein, and trypsin inhibitor content, demonstrating the potential of NIR spectroscopy in bioprocess monitoring applications.
JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION
(2023)
Article
Energy & Fuels
Liang Xu, Wenjie Wu, Wenxiang Zhao, Guohai Liu, Shuangxia Niu
IEEE TRANSACTIONS ON ENERGY CONVERSION
(2020)
Article
Automation & Control Systems
Guohai Liu, Yanyang Wang, Qian Chen, Gaohong Xu, Chengyan Song
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2020)
Article
Automation & Control Systems
Guohai Liu, Huan Zhong, Liang Xu, Wenxiang Zhao
Summary: This article investigates a multiharmonics linear primary permanent magnet vernier machine, which achieves richer harmonics and superior performance by using nonuniformly distributed PM arrays. The structures are described and compared, operation principles are analyzed by flux modulation theory, and electromagnetic performances are compared through finite element method. Results show that the multiharmonics machine offers 15% higher thrust force density compared with conventional machine. Experiments on a prototype validate the findings.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Yecheng Zhang, Guohai Liu, Wenxiang Zhao, Huawei Zhou, Qian Chen, Mingji Wei
Summary: The article introduces a new method for diagnosing ISCF in low-speed PMSMs, which improves fault phase identification sensitivity by decomposing zero-sequence voltage vectors and extracting the voltage vector closest to the ISCF phase angle. Additionally, a method for extracting phase voltage from PWM duty-cycle control voltage is proposed to reduce errors caused by measuring zero-sequence voltage with three-phase balanced resistance. Experiments show that the online detection limit of ISCF in low-speed PMSMs is reduced from 5% to 1% (short-circuit ratio) using this method.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2021)
Article
Automation & Control Systems
Shengdao Zhu, Wenxiang Zhao, Guohai Liu, Yanxin Mao, Yuhua Sun
Summary: This article investigates the effect of phase shift angle on radial force and vibration behavior in the DTP-PMSM, finding that the 7.5 degrees and 30 degrees configurations are significant in reducing radial force harmonics.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Jiahao Zhang, Guohai Liu, Qian Chen
Summary: A new method of virtual and actual signal injection (VASI) is proposed to achieve sensorless control and maximum torque per ampere (MTPA) control simultaneously at low speeds. Through decoupling two signal spaces, the control accuracy is achieved through simultaneous realization.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2021)
Article
Automation & Control Systems
Huawei Zhou, Jinhui Xu, Cheng Chen, Xiange Tian, Guohai Liu
Summary: A novel direct torque control approach based on disturbance observer (DOB) is proposed to minimize torque pulsations and enhance dynamic performance of a multiphase permanent magnet motor under open-circuit and short-circuit fault conditions. The method includes a fault-tolerant switching table and incorporates DOB to eliminate external disturbances, resulting in improved performance and robustness against faults. Simulation and experimental results confirm the effectiveness of the proposed strategy.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Meiling Zhao, Guohai Liu, Qian Chen, Wenxiang Zhao, Christopher H. T. Lee
Summary: This article proposes a new fault-tolerant control strategy for a triple redundant 3 x 3 phase permanent magnet assisted synchronous reluctance motor under a single-phase open-circuit fault. By redistributing the current and torque ratios, the strategy reduces electromagnetic torque ripple, improving system reliability and simplifying the control system.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Automation & Control Systems
Wenxiang Zhao, Shengdao Zhu, Jinghua Ji, Guohai Liu, Yanxin Mao
Summary: This article investigates the electromagnetic vibration source and its reduction design in fractional-slot concentrated-windings permanent magnet machines. Two new designs to reduce the vibration caused by the electromagnetic force modulation and stator MMF harmonics are proposed and validated through tests.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Huawei Zhou, Weiguo Tao, Guangyao Jiang, Guang-Jin Li, Guohai Liu
Summary: This article proposes effective approaches to address the inherent issues of consequent-pole permanent magnet machines, such as rotor core saturation and unipolar leakage flux. By using CP-Halbach PM array and unequal, multistep staggered rotors, these issues can be solved and better electromagnetic performance can be achieved.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Huawei Zhou, Cheng Chen, Guohai Liu, Yecheng Zhang
Summary: A novel sliding mode control strategy based on disturbance observer (DOB-SMC) was proposed for enhancing the robustness of a Tubular permanent magnet motor (TPMM) velocity drive system against disturbances. By incorporating a mismatch disturbance observer and internal model control (IMC) into the sliding mode control (SMC) law, the dynamic response performance of the velocity control system was improved and the effects of mismatched and matched disturbances were effectively restrained with little chattering. Both simulated and experimental results validated the effectiveness of the proposed strategy.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2021)
Proceedings Paper
Automation & Control Systems
Zhen Yao, Guohai Liu, Duo Zhang, Yue Shen, Zijie Wang
2020 CHINESE AUTOMATION CONGRESS (CAC 2020)
(2020)
Proceedings Paper
Automation & Control Systems
Guohai Liu, Shuangjian Wang, Duo Zhang, Yue Shen, Zhen Yao
PROCEEDINGS OF 2019 CHINESE INTELLIGENT AUTOMATION CONFERENCE
(2020)
Proceedings Paper
Automation & Control Systems
Guohai Liu, Jiajun Ni, Qian Chen
PROCEEDINGS OF 2019 CHINESE INTELLIGENT AUTOMATION CONFERENCE
(2020)
Article
Computer Science, Information Systems
Cheng Chen, Huawei Zhou, Guanghui Wang, Guohai Liu
Article
Spectroscopy
Zh. E. Ozbekova, A. A. Abdyldaev, A. A. Kulmyrzaev
Summary: This study compared two drying methods for cow and yak muscles, finding that freeze drying caused less discoloration. Additionally, analysis of fluorescence spectra allowed for accurate prediction of chemical composition and color characteristics of the muscles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Leo Mandic, Ivan Ljubic, Iva Dzeba
Summary: In this study, a combined experimental and computational approach was used to investigate the photoexcitation and photodegradation mechanisms of Doxazosin (DOX). The results provide valuable insights into the primary events following the photoexcitation of DOX and its potential applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiufeng Wang, Yao Jin, Wenhui Ai, Siqi Wang, Zhiqing Zhang, Ting Zhou, Fang Wang, Guodong Zhang
Summary: This study successfully synthesized near infrared fluorescence Ag2S quantum dots (QDs) and developed a dual-mode sensor for sulfide anion using the excellent oxidase-like characteristics of manganese dioxide (MnO2) nanosheets. The sensor showed a wider detection range, higher sensitivity, and shorter reaction time, making it suitable for highly selective detection of sulfide in different concentration ranges.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yafei Li, Yanming Ma, Chuantao Zheng, Di Yu, Lien Hu, Shuo Yang, Fang Song, Yadan Li, Shuanghai Liu, Zhanrui Zhang, Yu Zhang, Yiding Wang, Frank K. Tittel
Summary: To effectively monitor gas explosion and coal spontaneous combustion in coal mine, an intrinsically safe and explosion-proof dual-gas sensor system was developed for methane (CH4) and carbon monoxide (CO) measurement. The system achieved different measurement ranges using laser scanning and gas cells, and improved stability and accuracy through gas pre-treatment and temperature compensation algorithm.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Pei-Rong Chen, Li-Kang Chu
Summary: In this study, the hydrates of glyoxal were investigated using infrared absorption spectrometry. The results showed that at low concentrations, glyoxal mainly exists as monomeric dihydrate. These findings provide suitable detection windows for further research on the roles of glyoxal and its hydrates in atmospheric and aerosol chemistry, as well as the relevant reaction kinetics.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nichole O'Neill, Thamires A. Lima, Fabio Furlan Ferreira, Nicolas J. Alvarez, Reinhard Schweitzer-Stenner
Summary: This study determines the main fibril axis of GHG gel-forming fibrils using various techniques and compares the results with simulated data. The analysis suggests that the hydrophobic xz-surfaces of GHG fibrils could be a good target for the adsorption of hydrophobic drugs.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Mengyuan Liu, Hanchuang Zhu, Yikun Fang, Caiyun Liu, Xinke Li, Xiaohui Zhang, Lixue Ma, Kun Wang, Miaohui Yu, Wenlong Sheng, Baocun Zhu
Summary: ABHS is an efficient fluorescent probe that can accurately and sensitively detect Al3+ with strong resistance to interference. It also demonstrates excellent detection and imaging capabilities in complex real samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ahmed S. El-Shafie, Evana Rahman, Yasser Gadelhak, Rehab Mahmoud, Marwa El-Azary
Summary: The recycling of waste mandarin peels into biochar (MRBC) has been used as a high performance and cost-effective adsorbent for treating polluted wastewater effluents. Batch adsorption studies were conducted to analyze the adsorption competency of MRBC on two dyes, methylene blue (MB) and basic fuchsin (BF), either in individual solutions or binary combinations. The results showed that MRBC was capable of effectively removing a high percentage of both dyes. However, the adsorption capacity decreased when the dyes were combined. The cost estimation of MRBC production and wastewater treatment indicated that both were relatively low.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Anindita Bhatta, Jahnabi Upadhyaya, Dipak Chamlagai, Lincoln Dkhar, Pynskhemborlang T. Phanrang, Mohan Rao Kollipara, Sivaprasad Mitra
Summary: Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were synthesized and their photophysical properties were investigated. The synthesized coumarin compounds showed potential as therapeutic agents for Alzheimer's disease, inhibiting acetylcholinesterase activity. The presence of human serum albumin was found to affect the inhibition activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yongwei Duan, Quancheng Liu, Yiju Zhu, Qi Zhang, Xiaohui Duan, Hu Deng, Liping Shang
Summary: In this study, the phase transition of CL-20 was observed using terahertz spectroscopy, and quantum chemical calculations were employed to analyze the vibrations. The results indicated changes in the vibrations of CL-20 before and after phase transition.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuefeng Gao, Sai Xu, Baojiu Chen
Summary: This study synthesized Cs2NaInCl6 nanocrystals co-doped with Sb3+ and Tb3+ ions as probes for copper ions detection in lubricating oil. The introduction of Sb3+ effectively reduced the band gap of the host material and enabled energy transfer pathway for Tb3+ emission. The doped Tb3+ ions resulted in the suppression of emission due to electron transfer. The Cs2NaInCl6: 2.5 %Sb3+, 40 %Tb3+ NCs exhibited superior sensitivity and selectivity for copper ions detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yu Liu, Yue Zhang, Changyao Liu, Ce Wang, Baocai Xu, Li Zhao
Summary: A highly sensitive detection platform for heparin was developed using a cationic fluorescent dye (cresyl violet acetate) as a fluorescence probe. The platform demonstrated high selectivity towards heparin and achieved detection in both HEPES solution and serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lopamudra Roy, Nivedita Pan, Susmita Mondal, Ria Ghosh, Md. Nur Hasan, Neha Bhattacharyya, Soumendra Singh, Kallol Bhattacharyya, Arpita Chattopadhyay, Samir Kumar Pal
Summary: The study focuses on the interaction between reactive oxygen species (ROS) and a spectroscopic probe called Rose Bengal (RB), encapsulated in nanoscopic sodium dodecyl sulphate (SDS) micelles and entrapped in microscopic nylon 66 solid matrix. The research demonstrates efficient interaction between ROS and RB-SDS, and investigates the mechanism of hydroxyl radicals generation. Based on these findings, a prototype device utilizing RB embedded in a nylon thin film for quantification of ROS in extracellular fluids and food materials was developed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiaosong Sun, Qihao Cui, Wenyue Dong, Qian Duan, Teng Fei
Summary: Conjugated porous polymers (CPPs) are promising sensing materials and their application in aqueous media is limited. In this study, we synthesized CPPs with porous structure and prepared nanoparticles, enabling efficient photoluminescence sensing of nitroaromatic explosives in aqueous phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Maria Cristina Caggiani, Germana Barone, Paolo Mazzoleni
Summary: Raman spectroscopy is commonly used for studying glassy materials in cultural heritage, but it is more difficult to interpret the spectra and apply the technique with portable instruments. In contrast, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) can be used in archaeometric investigations as it is portable and non-invasive. However, there is limited application of this technique to historical glasses. This exploratory work demonstrates the potential of DRIFTS, in combination with portable X-ray Fluorescence (pXRF) and EDS microanalyses, for studying the composition and alteration of glass samples in cultural heritage.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)