Engineered Multifunctional Fluorinated Film Based on Semicontinuous Emulsion Polymerization Using Polymerizable Quaternary Ammonium Emulsifiers by Hongzhu Liu, Lingnan Wang, Minhuan Wang, Chuan-Jin Hou, Bin-bin Ye, Zefeng Wang, Jiming Bian

“…Herein, a novel series of cationic quaternary ammonium polymerizable surfactant was selected because it can react with CTFE and acrylate monomers and can become a part of the polymers. …”
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Enhancing Biocide Safety of Milk Using Biosensors Based on Cholinesterase Inhibition by Lynn Mouawad, Georges Istamboulie, Gaëlle Catanante, Thierry Noguer

Subjects: “…quaternary ammoniums…”
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The Megafauna3D Dataset: 3D Models of Late Pleistocene Megafauna Fossils From Uruguay by Luciano Varela, P. Sebastián Tambusso, Martín Batallés, Gabriela Costoya, Richard A. Fariña

Subjects: “…quaternary…”
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Organocatalytic Packed-Bed Reactors for the Enantioselective Flow Synthesis of Quaternary Isotetronic Acids by Direct Aldol Reactions of Pyruvates by Lorenzo Poletti, Carmela De Risi, Daniele Ragno, Graziano Di Carmine, Riccardo Tassoni, Alessandro Massi, Paolo Dambruoso

“…The utilization of the homogeneous (<i>S</i>)-2-pyrrolidine-tetrazole organocatalyst (Ley catalyst) in the self-condensation of ethyl pyruvate and cross-aldol reactions of ethyl pyruvate donor with non-enolizable pyruvate acceptors, namely the sterically hindered ethyl 3-methyl-2-oxobutyrate or the highly electrophilic methyl 3,3,3-trifluoropyruvate, is described as the key enantioselective step toward the synthesis of the corresponding biologically relevant isotetronic acids featuring a quaternary carbon functionalized with ester and alkyl groups. …”
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New findings about releasing of chloride ions and quaternary ammonium compounds from conventional and experimental glass ionomers by Aleksandar Dimkov, Elizabeta Gjorgievska, Jasna Simonoska

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Late Quaternary Ant Fossils From Packrat Middens (Hymenoptera: Formicidae): Implications for Climatic Change in the Chihuahuan Desert by William P. MacKay, Scott A. Elias

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Pore Structure Characteristics, Genesis, and Its Controlling Effect on Gas Migration of Quaternary Mudstone Reservoir in Qaidam Basin by Shijie He, Xianglu Tang, Zeyu Shao, Zhenxue Jiang, Bo Wang, Xiaoxue Liu, Yuchao Wang, Mingli Xu

“…The Sanhu Depression in Qaidam Basin is the largest Quaternary biogenic gas exploration area with the shallowest burial depth in the world. …”
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['STRATIGRAPHY, PETROLOGY AND FACIES ASSOCIATIONS OF THE QUATERNARY SPIN KAREZ GROUP, HANNA-SPIN KAREZ AREA, QUETTA DISTRICT, PAKISTAN'] by Muhammed Iqbal Kasi, Razzaq Abdul Manan, Akhtar Muhammad Kassi, Aimal Khan Kasi, Muhammed Naseer

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Optimization of Low-Carbon Footprint Quaternary and Quinary (37% Fly Ash) Cementitious Nanocomposites with Polycarboxylate or Aqueous Nanosilica Particles by Styliani Papatzani, Kevin Paine

“…In this paper, nS particles dispersed in (a) polycarboxylate or (b) water were added to a low-carbon footprint reference binder containing 43% Portland cement (PC), 20% limestone powder (LS), and 37% fly ash (FA) by mass of binder. Eight quaternary binders containing nS, PC, LS, and FA and eight quinary binders comprising nS, PC, LS, FA, and silica fume (μS) were investigated. nS was added at 0.1%, 0.2%, 0.5%, or 1.0% by mass of binder as a replacement of LS for the quaternary binders and at 0.5% or 1.0% for the quinary binders. …”
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Quantitative analysis of quaternary mixtures in topical creams using cutting-edge HPLC technique: environmental impact and sigma methodology by Maha A. Alwaili, Osama A. Mahmoud, Samar M. Mahgoub, Manal A. Almalki, Hassan A. Rudayni, Ahmed A. Allam, Mustafa Ahmed Abdel-Reheim, Osama A. Mohammed, Mahmoud A. Mohamed

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The utilization of microbial cell-free DNA next-generation sequencing for the detection of human herpesvirus-8 in a quaternary care center by Rebecca Berger, Jennifer Jacobe, Fernando H. Centeno, Todd Lasco, Mayar Al Mohajer

“…Methods: Between 2017 and 2024, we reviewed the medical charts of 10 immunosuppressed patients at a quaternary care center who had positive HHV8 mcfDNA NGS results. …”
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Interaction of Molybdo-Phosphoric and Molybdo-Antimono-Phosphoric Heteropoly Acids with Silica Gels Modified with Aliphatic and Heterocyclic Quaternary Ammonium Salts by Olga A. Zaporozhets, Igor A. Kachan, Lionel S. Zinko, Julia P. Bas, Valentyn I. Davydov

“…The interaction of molybdo-phosphoric and molybdo-antimonophosphoric heteropoly acids with aliphatic (tetradecylammonium nitrate and trinonyloctadecylammonium iodide) and heterocyclic (lucigenine and safranine) quaternary ammonium salts immobilized onto silica has been studied using adsorption and spectroscopic methods. …”
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The impact of dimethylaminohexadecyl methacrylates on the physical and antibacterial properties of endodontic sealers by Faisal Alharamlah, Fawaz AlTuwaijri, Haitham AlQuorain, Abdul Samad Khan, Faisal Alonaizan, Rashed Alsahafi, Michael D. Weir, Hockin H. K. Xu, Abdulrahman A. Balhaddad

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Modification of Chitosan-Coated Magnetic Material with Glycidyl-trimethylammonium Chloride for Cr(VI) Adsorption by Salwa Kamilia, Feri Mukhayani, Sutarno Sutarno, Nuryono Nuryono

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Characteristics and paleoclimate significance of authigenic ferrimagnetic minerals in the Xuancheng red earth, southern China by Daqian Zhang, Zhenggang Duan, Jiangjun Chen, Jingrong Wang, Gubu Muga, Yunqi Yang, Yiming Wang, Zhendong Liu, Thomas J. Algeo, Hanlie Hong, Lian Zhou, Ke Yin

Subjects: “…Quaternary…”
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Novel N-quaternary coumarin-3-yl-imidazo[1,2-a]pyridines as fluorescent hybrids: Their synthesis and biological evaluation in cancer cells by Karla Armendariz-Barrientos, Luis A. Pérez, Selene Lagunas-Rivera, Yolanda Alcaraz-Contreras, Marco A. García-Revilla, Heriberto Prado-Garcia, Rocío García-Becerra, Miguel A. Vazquez

Subjects: “…N-quaternary coumarin-3-yl-imidazo[1…”
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Preparation and Characterization of Cu2ZnSnS4 Thin Films and Solar Cells Fabricated from Quaternary Cu-Zn-Sn-S Target by Min Xie, Daming Zhuang, Ming Zhao, Zuolong Zhuang, Liangqi Ouyang, Xiaolong Li, Jun Song

“…CZTS thin films were fabricated through sputtering from a quaternary Cu-Zn-Sn-S target, followed by a sulfurization process. …”
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A Green and Efficient Method for the Preparation of 3,4-Dihydropyrimidin-2(1H)-ones Using Quaternary Ammonium-Treated Clay in Water by Soheil Sayyahi, Sedigheh Jahanbakhshi, Zahra Dehghani

“…A variety of 3,4-dihydropyrimidin-2(1H)-ones derivatives were synthesized via three-component Biginelli reaction. The quaternary ammonium-treated clay-catalyzed process proved to be simple, efficient, and environmentally friendly.…”
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Studies in Asymmetric Epoxidation of Chalcone Using Quaternary Salts and Nonionic Surfactants Based on 6-Amino-6-deoxy-glucose as Chiral Phase Transfer Catalysts by Lalit Sharma, Subhash Chander Sharma, Saroj

“…Quaternary salts and nonionic surfactants based on 6-amino-6-deoxy-glucose were explored as chiral phase transfer catalysts for the asymmetric epoxidation of chalcone. …”
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Comparative Hydrological and Geoelectrical Study on the Quaternary Aquifer in the Deltas of Wadi Badaa and Ghweiba, El Ain El Sukhna Area, Northwest Suez Gulf, Egypt by M. M. El Osta, A. El. El Sheikh, M. S. Barseem

“…The different activities in that area depend mainly on the groundwater of the Quaternary aquifer, which forms the main water bearing strata. …”
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