Determination of Benzalkonium Chloride in a Disinfectant by UV Spectrophotometry and Gas and High-Performance Liquid Chromatography: Validation, Comparison of Characteristics, and... by Mariia Smolinska, Roman Ostapiv, Mariia Yurkevych, Liubov Poliuzhyn, Olha Korobova, Ihor Kotsiumbas, Hryhorii Tesliar

“…GC determination was performed using a flame ionization detector on a glass capillary column ZB-WAX plus 30 m × 0.25 mm with an inner coating thickness of 0.25 μm. …”
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Simultaneous Quantification of 25-Hydroxyvitamin D3 and 24,25-Dihydroxyvitamin D3 in Rats Shows Strong Correlations between Serum and Brain Tissue Levels by Ying Xue, Xin He, Huan-De Li, Yang Deng, Miao Yan, Hua-Lin Cai, Mi-Mi Tang, Rui-Li Dang, Pei Jiang

“…Serum and brain tissue were analyzed by HPLC-MS/MS with electrospray ionization following derivatization with 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD). …”
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The Effects of Active Galactic Nuclei Feedback on the Lyα Forest Flux Power Spectrum by Megan Taylor Tillman, Blakesley Burkhart, Stephanie Tonnesen, Simeon Bird, Greg L. Bryan

“…The effects of AGN feedback can be seen across a large range of wavenumbers (1.5 × 10 ^−3  <  k  < 10 ^−1 s km ^−1 ) changing the ionization state of hydrogen in the IGM through heating. …”
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Simultaneous determination of nirmatrelvir, ritonavir, and beta-D-N4-hydroxycytidine in human plasma and epithelial lining fluid using LC-MS/MS and its clinical application to comp... by Wenjing Zhang, Lin Xia, Zhilong Yuan, Mengdan Liu, Yang Jiao, Zhuo Wang

“…The analysis method was developed and validated to simultaneously quantify nirmatrelvir, ritonavir, and beta-D-N4-hydroxycytidine (NHC) in human plasma and bronchoalveolar lavage fluid (BALF) by electrospray ionization mass spectrometry.Our method was validated over a linear range of 30–10000 ng/mL for both matrices, with precision and accuracy within 15 % across four concentrations. …”
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Association of ATM Gene Polymorphism with PTC Metastasis in Female Patients by Yulu Gu, Xiaoli Liu, Yaqin Yu, Jieping Shi, Lizhe Ai, Hui Sun, Joseph Sam Kanu, Chong Wang, Yawen Liu

“…Four ATM single nucleotide polymorphisms (SNPs) were genotyped using Matrix-Assisted Laser Desorption/Ionization Time of Flight Mass Spectrometry (MALDI-TOF-MS). …”
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Synovial Fluid Cell Proteomic Analysis Identifies Upregulation of Alpha-Taxilin Proteins in Rheumatoid Arthritis: A Potential Prognostic Marker by Ashish Sarkar, Shivani Sharma, Prachi Agnihotri, Tanmoy Sarkar, Pooja Kumari, Rajesh Malhotra, Barun Datta, Vijay Kumar, Sagarika Biswas

“…Two-dimensional gel electrophoresis (2-DE) was performed using synovial fluid cells of RA and osteoarthritis (OA) patients, and 7 differentially expressed proteins were identified using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS/MS). …”
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Evaluation of Fructooligosaccharides and Inulins as Potentially Health Benefiting Food Ingredients by HPAEC-PED and MALDI-TOF MS by Chiara Borromei, Maria Careri, Antonella Cavazza, Claudio Corradini, Lisa Elviri, Alessandro Mangia, Cristiana Merusi

“…This paper describes the complementarity of high-performance anion exchange chromatography coupled with pulsed electrochemical detection (HPAEC-PED) and matrix-assisted laser desorption/ionization mass spectrometry (MALDI-TOF-MS) to evaluate commercial available fructans (fructooligosaccharides (FOS) and inulins), having different degrees of polymerization (DP) which are usually employed by food industry as functional ingredients either for their prebiotic properties or as a fat replacer, giving a fat-like mouth feel and texture. …”
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Properties of κ‐Ga2O3 Prepared by Epitaxial Lateral Overgrowth by Alexander Polyakov, In‐Hwan Lee, Vladimir Nikolaev, Aleksei Pechnikov, Andrew Miakonkikh, Mikhail Scheglov, Eugene Yakimov, Andrei Chikiryaka, Anton Vasilev, Anastasia Kochkova, Ivan Shchemerov, Alexey Chernykh, Stephen Pearton

“…Low concentration Sn doping results in net donor concentrations of ≈ 1013 cm−3, and deep trap spectra determined by electron traps at EC‐0.5 eV, and deep acceptors with an optical ionization threshold near 2 and 3.1 eV. Treatment of the samples in hydrogen plasma at 330 °C increases the donor density near the surface to ≈ 1019 cm−3. …”
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Rapid detection of carbapenem-resistant Escherichia coli and carbapenem-resistant Klebsiella pneumoniae in positive blood cultures via MALDI-TOF MS and tree-based machine learning... by Xiaobo Xu, Zhaofeng Wang, Erjie Lu, Tao Lin, Hengchao Du, Zhongfei Li, Jiahong Ma

“…This study was based on matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), Decision Tree (DT), Random Forest (RF), Gradient Boosting Machine (GBM), eXtreme Gradient Boosting (XGBoost), and Extremely Randomized Trees (ERT) models were constructed to classify carbapenem-resistant Escherichia coli (CREC) and carbapenem-resistant Klebsiella pneumoniae (CRKP). …”
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Untargeted Metabolomics Reveals Key Differences Between Yak, Buffalo, and Cow Colostrum Based on UHPLC-ESI-MS/MS by Yuzhuo Wang, Changhui Li, Jiaxiang Huang, Qingkun Zeng, Ling Li, Pan Yang, Pengjie Wang, Min Chu, Jie Luo, Fazheng Ren, Hao Zhang

“…Methods: This study employed ultra-high performance liquid chromatography-electrospray ionization tandem mass spectrometry (UHPLC-ESI-MS/MS) for untargeted metabolomics analysis of YC, BC, and CC. …”
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Determination of antibiotics in bean sprouts by UHPLC-MS/ MS-internal standard method by ZHANG Xiaoyi, ZHENG Sanyan, ZHANG Xiuyao, LI Ruifen, YANG Shuran

“…The separated analytes were detected by the electrospray ionization (ESI) in multiple reaction monitoring (MRM) mode, and quantified by internal standard method.ResultsThe 59 kinds of antibiotics in bean sprouts had a good linear relationship in the range of 10 μg·kg-1 to 1 000 μg·kg-1. …”
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Decoding MexB efflux pump genes: structural, molecular, and phylogenetic analysis of multidrug-resistant and extensively drug-resistant Pseudomonas aeruginosa by Muhammad Bilal Habib, Naseer Ali Shah, Afreenish Amir, Huda Ahmed Alghamdi, Muhammad Haseeb Tariq, Kiran Nisa, Mariam Ammoun

“…Matrix-assisted laser desorption ionization-time of flight (MALDI-ToF) were used for the identification of isolates. …”
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Determination of Per- and Polyfluoroalkyl Substances in Craft Villages and Industrial Environments of Vietnam by Thi Vi Phung, Thuy Ngoc Nguyen, Lan-Anh Phan Thi, Hung Viet Pham, Hong Anh Duong

“…Eight PFASs in wastewater from craft villages and industrial environments of Vietnam were analyzed using liquid chromatography triple quadrupole mass spectrometry (LC-MS/MS) with negative electrospray ionization interface. For analysis of PFASs, percent recoveries ranged from 87 to 112, and MQL varied from 0.19 ng/L to 0.49 ng/L. …”
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Tissue Distribution of Total Flavonoids Extracts of Drynariae Rhizoma in Young and Old Rats by UPLC–MS/MS Determination by Yue Zhang, Xia Lei, Hongdan Xu, Guoliang Liu, Yeqiu Wang, Huifeng Sun, Fang Geng, Ning Zhang

“…All analytes and IS were quantified through electrospray ionization in positive ion multiple reaction monitoring (MRM) mode. …”
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Detection Methods for Asparagine and Glutamine Contents in Fruits and Vegetables and Recommendations for Dietary Intake of Fruits and Vegetables in Patients with Urea Cycle Disorde... by YE Xinyu, LI Ziying, TANG Shujun, SUN Liping, ZHAO Yunxia, XIAO Weimin, GU Yaping, KUANG Huiying, CHEN Xin, YANG Guowu, HUANG Yali

“…The mass spectrometer was equipped with an electrospray ionization source and operated in the positive ion mode with multiple reaction monitoring (MRM), and quantification was achieved using stable isotope-labeled internal standards. …”
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Simultaneous Determination of 13 Constituents of Radix Polygoni Multiflori in Rat Plasma and Its Application in a Pharmacokinetic Study by Wenhao Cheng, Yinghui Li, Wei Yang, Siyang Wu, Mengmeng Wei, Yang Gao, Chen Kang, Shuofeng Zhang, Yingfei Li

“…The constituents were detected in negative ionization mode using multiple reaction monitoring. …”
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Effects of helium irradiation damage on deuterium plasma-driven permeation through tungsten coated RAFM steel by Yue Xu, Xiao-Ping Tian, Hong-Yan Tan, Hai-Ying Fu, Jun-Jie Ni, Lai-Ma Luo, Yu-Cheng Wu

“…The results indicated that the presence of He reduced the ionization rate of the D plasma and decreased D-PDP flux. …”
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Determination of Organophosphorus Esters in Fall Protection Equipment by Accelerated Solvent Extraction and Solid-Phase Extraction Coupled with LC-MS/MS Detection by Haihong Li, Mingli Ye, Fangfang Wu, Xuyang Zhao, Lifeng Wang, Yili Wei, Shengyi Xie, Hairong Cui

“…A HILIC column was used to separate the OPEs using an acetonitrile/water mixture as the mobile phase with the detection by the electrospray ionization mass spectrometry, which was operated under the positive mode. …”
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Simultaneous Determination of Multiple Active Components from Bushen Pills and Application in a Pharmacokinetic Study in Rats by Houli Li, Benjie Wang, Guiyan Yuan, Xiaoyan Liu, Jing Huang, Lilong Xiong, Di Zhang, Weiyi Feng, Ruichen Guo

“…Three active constituents of BSPs, including paeoniflorin (PF), berberine hydrochloride (BBR), and schizandrin (SCH), were simultaneously determined by the established LC-MS method with electrospray ionization (ESI) in positive selected ion monitoring (SIM) mode at m/z 503.1, 336.0, and 455.2. …”
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Photosynthetic Pigments with Potential for a Photosynthetic Antenna: A DFT Analysis by Jesús Francisco Monzón-Bensojo, Manuel A. Flores-Hidalgo, Diana Barraza-Jiménez

“…The evaluated electronic properties at the gas phase included (a) energies such as HOMO-LUMO band gap (H-L, ranging from 2.168 to 2.504 eV), adiabatic ionization potential (I, ranging from 5.964 to 7.207 eV), and adiabatic electronic affinity (A, ranging from 2.176 to 2.741 eV); (b) global chemical reactivity indexes such as electronegativity (χ, ranging from 4.121 to 4.974 eV), hardness (η, ranging from 1.812 to 2.233 eV), electrophilicity index (ω, ranging from 4.365 to 5.541 eV), and electroaccepting-electrodonating powers (ω+, ranging from 1.671 to 2.115 eV, and ω−, ranging from 4.375 to 5.273 eV); (c) electron-hole reorganization energies (λ, ranging from 0.225 to 0.519 eV and ranging from 0.168 to 0.425 eV, respectively) and electron-hole extraction potentials (EEP, ranging from 2.570 to 2.966 eV, and HEP, ranging from 5.538 to 7.012 eV, respectively); and (d) local chemical reactivity indexes like condensed Fukui functions (fk), condensed dual descriptor (f2r), and condensed local softness (sk). …”
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