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Journal articles on the topic 'Fluorine introduct'

Author: Grafiati
Published: 9 March 2023
Last updated: 31 July 2025

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1

Ye, Hao Hua, Zhan Xiong Li, Guo Qiang Chen, Shao Qiang Zhou, and Jian He Cai. "Research Progress of Fluoride-Containing Acrylate Derivatives and their Application on Textile." Advanced Materials Research 331 (September 2011): 229–36. http://dx.doi.org/10.4028/www.scientific.net/amr.331.229.

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The research progress of fluorine-containing acrylate monomers and their polymers has been discussed. These monomers were classified systematically according to chemical structure, such as perfluoroalkylinyl esters monomers, methyl trifluoroacrylate monomers, and so on. The synthesis of fluorinate acrylate and their polymerization were introduced. In addition, the features of these fluoride-containing chemicals were discussed as well as their applications on fabrics and research trend.
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2

Zhao, Ming−Ming, Qiang Wang, Luke Saye Nenwon Krua, et al. "Application Progress of New Adsorption Materials for Removing Fluorine from Water." Water 15, no. 4 (2023): 646. http://dx.doi.org/10.3390/w15040646.

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A large amount of fluorine−containing wastewater was produced with the rapid development of the industry. Excessive fluoride content in water will not only endanger ecological security but also pose threat to human health. In this study, common new adsorbents for defluorination, such as metal−based adsorbents, natural adsorbents, and nanomaterial adsorbents were reviewed for its physicochemical properties and fluorine removal efficiency. The fluorine removal mechanism of different adsorbents was introduced in detail, and the future work of the removal of fluorine using novel adsorbents was pro
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3

CHEN, Shi Yi, and Shou Ting Zhang. "Research on the Utilization and Industry Development Strategies of Fluorite Resources in China's Fluorine Chemical Industry." Advanced Materials Research 581-582 (October 2012): 142–45. http://dx.doi.org/10.4028/www.scientific.net/amr.581-582.142.

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This paper introduced fluorite resource profiles on the basis of elaborated China fluorite resource utilization status, focusing on analysis of fluorite in the fluorine chemical industry, discusses the problems of our country in the fluorine chemical industry development and firefly stone rational use of resources and the sustainable development of China's fluorine chemical industry recommendations.
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4

Shevelev, G. A., L. I. Vasilenko, O. M. Pakhorukova, et al. "Emission determination of fluorine using «Grand-Potok» complex with sample injection into dc arc by spill-injection method." Industrial laboratory. Diagnostics of materials 85, no. 1II) (2019): 45–49. http://dx.doi.org/10.26896/1028-6861-2019-85-1-ii-45-49.

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An additional photodetector array BLPP-369 was installed on a «Grand-Potok» complex for rapid atomic-emission determination of the fluorine concentration in fluorite samples. Introduction of fluorite samples was carried out using the spill-injection method simultaneously with high pure calcium oxide introduction using the second conveyor belt. The use of an additional photodetector array with a spectral range of 528 – 536 nm provides the possibility of expanding the spectrum of CaF molecular lines with the intensity sufficient for determination of fluorine concentrations in fluorite samples. A
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5

Kim, Ah-Jin. "Type and Characteristics of Fluoride varnish." Journal of The Korean Dental Association 61, no. 7 (2023): 479–86. http://dx.doi.org/10.22974/jkda.2023.61.7.004.

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The composition of fluoride varnish has changed over time. Current fluoride varnishes used have the follow-ing active ingredients: 5% NaF with a rosin and ethanol. There is also a fluoride varnish containing 7700 µg F/g NH4F in synthetic polymer varnish base and ethanol solvent. Recently, to enhance remineralization, calcium– phosphate compounds were added to some fluoride varnishes. Also, light-curable resin-modified glass ionomer (RMGI) varnishes were introduced into the market. In this study, we compared and analyzed the composition and characteristics of several types of fluoride varnish,
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6

Jin, Huagui, Yixiao Wang, Xuebin An, et al. "A Review of Fluoride Removal from Phosphorous Gypsum: A Quantitative Analysis via a Machine Learning Approach." Materials 17, no. 14 (2024): 3606. http://dx.doi.org/10.3390/ma17143606.

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This review comprehensively explores fluoride removal from phosphogypsum, focusing on its composition, fluorine-containing compounds, characterization methods, and defluorination techniques. It initially outlines the elemental composition of phosphogypsum prevalent in major production regions and infers the presence of fluorine compounds based on these constituents. The study highlights X-ray photoelectron spectroscopy (XPS) as a pivotal method for characterizing fluorine compounds, emphasizing its capability to determine precise binding energies essential for identifying various fluorine spec
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7

Cho, Ja-Won. "Fluoride varnish application for children." Journal of The Korean Dental Association 48, no. 6 (2010): 454–58. http://dx.doi.org/10.22974/jkda.2010.48.6.003.

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Dental caries is one of the most common chronic diseases in the world, which are caused by complex actions of oral such factors as the bacteria, food, tooth, saliva and other factors. Although this is one of the typical oral diseases, we can acquire a high prophylactic effect by use of proper prophylactic measures and management. At the beginning of the 1940s, fluorine was first introduced to prevent dental caries which now is widely used. The fluorine application effects are varied from different concentrations and categories of fluorine, and different application method and frequency, etc. T
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8

Novosyolov, A., Yu Dreer, M. Nikitina, I. Novoselova, and S. Krapivin. "STUDY OF THE MINERALIZING EFFECT OF CRYOLITE AND ITS INFLUENCE ON THE PROCESSES OF CLINKER FORMATION." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 10, no. 2 (2024): 86–95. https://doi.org/10.34031/2071-7318-2024-10-2-86-95.

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The article discusses the effect of the addition of calcium fluoride CaF2 on the dissociation of calcium carbonate CaCO3. When calcium fluoride is added in amounts of 1 and 10% by fluorine ion, a low-temperature liquid phase is formed in the system of calcium carbonate CaCO3, calcium oxide CaO and calcium fluoride CaF2. The temperature of formation of the liquid phase depends on the amount of introduced calcium fluoride CaF2. The presence of a liquid phase leads to a decrease in the rate of decomposition of calcium carbonate, which contributes to the appearance of endothermic effects on the cu
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9

Sharma, Sahil, Alifia Ibkar, Danish Javid, et al. "Bio remedial Process: A Review on Removal of Fluoride from the Waste Water." Ecology, Environment and Conservation 29 (2023): 426–31. http://dx.doi.org/10.53550/eec.2023.v29i03s.073.

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Ground water has always been an important and most dependable source of water since prehistoric ages, but with rapid industrialization to meet the needs of growing population has stressed the ground water reservoir. Stress to ground water reservoir is just one problem; industrial waste has also introduced lots of new chemical substances in water bodies. Fluorides are one such pollutant that undermines living life forms especially human beings .There are primarily two sources of fluoride contamination in ground water. Geogenic sources and anthropogenic sources. Talking about the status of fluor
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10

Wang, Heng, Zongzheng Cao, Yuying Zhu, et al. "Tuning superconductivity of Bi2Sr2CaCu2O8+x by fluoride ion intercalation with LaF3 gate dielectric." Journal of Applied Physics 132, no. 21 (2022): 214301. http://dx.doi.org/10.1063/5.0121822.

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We demonstrate fluorine intercalation into Bi2Sr2CaCu2O8+x (BSCCO) flakes, as thick as 100 nm, by back-gating a single crystalline LaF3 substrate. Element-sensitive analysis not only confirms the presence of fluorine in BSCCO after gating but also reveals lateral diffusion of fluorine in BSCCO. Transport measurements further demonstrate the hole-doping effect of fluoride ions in BSCCO through effective modulation of the superconducting transitions. Our work introduces a distinct type of ions (F−) that can be intercalated into materials via solid state back-gating. It broadens the toolbox of io
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11

Ovrutsky, G. D. "Anti-carious effect of fluoride and secretory immunity." Kazan medical journal 70, no. 2 (1989): 121–23. http://dx.doi.org/10.17816/kazmj99911.

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It has been proved that among the factors influencing the level of dental caries and the course of this disease, the amount of fluoride that enters the body is a determining factor. Under normal conditions the main source is drinking water. The anti-carious effect is inherent in fluoride, as contained in natural waters, and artificially introduced into the water. Once in the body, fluoride is firmly attached to the enamel. At the same time in the enamel prisms represented by hydroxyapatite, one of the hydroxyl groups is replaced by fluorine, forming a hard-to-solve fluorapatite. This view of t
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12

Chao, Jilei, Ruizhi Shi, Fuqiang Chu, Yanling Guo, Qian Deng, and Bing Sun. "Preparation and Properties of Hydrophobic and Oleophobic Coating for Inkjet Printing." Coatings 13, no. 2 (2023): 286. http://dx.doi.org/10.3390/coatings13020286.

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As a functional decorative material on the surface of printing and packaging, coating plays the role of increasing gloss, wear resistance, and antifouling. It has broad application prospects in high-end printed materials such as posters, art reproductions, and maps. In this paper, dodecafluoroheptyl methacrylate was used as the fluorine-containing monomer, which was used to modify the epoxy resin and introduce fluoride first. Under the action of polymerization inhibitor and catalyst, the epoxy resin was further modified by ring opening, esterification, and neutralization with acrylic acid, mal
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13

Zheng, Yadong, and Yan Wang. "Enhanced Performance of Recovered Cathode Materials with Fluorine Impurity in Hydrometallurgy Recycling." ECS Meeting Abstracts MA2023-01, no. 4 (2023): 857. http://dx.doi.org/10.1149/ma2023-014857mtgabs.

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With the growing lithium-ion battery (LIB) industry since its initial inception in the late 20th century, battery recycling is seen as an end-of-pipe process to resolve environmental and economic issues generated by the accumulation of waste batteries. In recent years, an increasing attention has been paid to the hydrometallurgy recycling due to its high recovery efficiency, low energy cost, as well as large-scale production capability. In order to achieve a high-quality recovered material, many resources have been poured into this field trying to develop better design and control of synthesis
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14

Huang, Junwei, Qiwu Zhang, Hongchao Li, and Chao Wang. "Difficulties and Recent Achievements in Flotation Separation of Fluorite from Calcite—An Overview." Minerals 12, no. 8 (2022): 957. http://dx.doi.org/10.3390/min12080957.

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As an important strategic non-metallic mineral resource, fluorite has been widely used in various industrial fields, such as metallurgy, optics and semiconductor manufacturing, as well as fluorine-related chemical engineering. Since the major gangue minerals of fluorite ore are silicate and carbonate ones, flotation is the main beneficiation method for the concentration. Compared with the relatively easy operation for silicate-type fluorite ore, fluorite concentration from calcite has always been the most difficult challenge in the field of mineral processing. In this review, analyses of the f
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15

Richard, Sauerheber. "Anti-TNFalfa for Treatment of Isolated Gastrocnemius Myositis Related to Crohn’s Disease: A Case Report." Archives of Case Reports 9, no. 3 (2025): 077–80. https://doi.org/10.29328/journal.acr.1001131.

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The history of the use of industrial fluoride compounds infused into drinking water is briefly summarized. The lack of oversight by Federal regulatory agencies conflicts with its recommendation by the Oral Health Division of the Centers for Disease Control. The chemistry of fluorides is discussed along with the toxic effects of fluoride ingestion. The U.S. Food and Drug Administration has never approved fluoride for ingestion and has instead ruled that it is unsafe to add to foods and prohibits the sale of fluoride compounds intended for ingestion by pregnant women. Legal issues are introduced
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16

Romanenko, A. A., E. M. Zinina, V. I. Savinkov, et al. "GLASSY FUNCTIONAL FILLERS OF GLASS IONOMER CEMENTS IN THE SrO–Al2O3–P2O5–SiO2–F SYSTEM." Steklo i Keramika, no. 12 (December 2022): 3–10. http://dx.doi.org/10.14489/glc.2022.12.pp.003-010.

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Based on glass in the SrO–Al2O3–P2O5–SiO2–F system, functional glass fillers for glass ionomer cements containing up to 13 wt. % fluorine were obtained. The high level of radiopacity of the filling material is due to the presence of the absorbing component of the glass filler - oxide and strontium fluoride, which are introduced into the glass together. The use of fusible fluorine-containing raw materials makes it possible to reduce the glass transition temperatures, which opens up prospects for the industrial development of the developed compositions at melting temperatures below 1500 °C. The
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17

Till, Christine, Philippe Grandjean, E. Angeles Martinez-Mier, Howard Hu, and Bruce Lanphear. "Health Risks and Benefits of Fluoride Exposure During Pregnancy and Infancy." Annual Review of Public Health 46, no. 1 (2025): 253–74. https://doi.org/10.1146/annurev-publhealth-060722-023526.

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Health authorities have promoted community water fluoridation (CWF) to prevent dental caries for more than 75 years. However, growing evidence has raised questions about the safety of this public health intervention, particularly for young children who are at risk of excess fluoride intake. Divergent opinions about the risk–benefit ratio of CWF have ignited a global debate. The efficacy of topical fluoride in preventing dental caries is strong, whereas contemporary evidence for systemic administration of fluoride is weaker. Inequalities in access to dental care and topical fluorides introduce
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18

Tursunbayev, Sarvar, Nodir Turakhodjayev, Sharofuddin Mardanokulov, Ruslan Zokirov, and Furkat Odilov. "The effect of lithium on the mechanical properties of alloys in the Al-Li system." E3S Web of Conferences 390 (2023): 05046. http://dx.doi.org/10.1051/e3sconf/202339005046.

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The article considers the dependence of wear resistance and hardness on each other on the mechanical properties of alloys in the aluminum-lithium system. In experiments, lithium fluorine compound from A K7 and D16 aluminum alloys was added as alloying elements to obtain an aluminum-lithium sample. Based on the mechanical properties of the samples, the hardness was changed in accordance with the Rockwell method and the abrasiveness was investigated.The samples were poured into a heat-resistant furnace at a temperature of 750 °C.The lithium fluoride compound was introduced into the charge in thr
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19

Krasikova, Raisa N., and Viktoriya V. Orlovskaya. "Phase Transfer Catalysts and Role of Reaction Environment in Nucleophilc Radiofluorinations in Automated Synthesizers." Applied Sciences 12, no. 1 (2021): 321. http://dx.doi.org/10.3390/app12010321.

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Incorporation of [18F]fluorine into PET radiotracer structure has traditionally been accomplished via nucleophilic pathways. The [18F]fluoride is generated in an aqueous solution via proton irradiation of oxygen-18 enriched water and must to be introduced into water-free organic solutions in order to generate reactive species. Thus nucleophilic 18F-fluorination traditionally included steps for [18F]fluoride concentration on the anion exchange resin, followed by removal of residual water via azeotropic distillation with MeCN, a time-consuming process associated with radioactivity losses and dif
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20

Laurema, Seppo, and Anna-Liisa Varis. "The fluoride content of Finnish honey." Agricultural and Food Science 59, no. 5 (1987): 379–85. http://dx.doi.org/10.23986/afsci.72271.

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The content of fluoride was determined with an ion-specific electrode on 59 samples of honey from 47 localities in Finland. The concentrations ranged from 25 to 550/µg/kg and the mean for all the localities was 85.7 µg F-/kg fresh weight honey. The concentrations were lowest in eastern and northern Finland, where the amount of fluoride in the soil is small, and higher on the coast and areas where more fluoride occurs in the groundwater and bedrock. However, the highest levels of fluoride in honey were detected in the vicinity of Helsinki and some other places where the amount in the groundwate
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21

Bernard-Gauthier, Vadim, Carmen Wängler, Esther Schirrmacher, et al. "18F-Labeled Silicon-Based Fluoride Acceptors: Potential Opportunities for Novel Positron Emitting Radiopharmaceuticals." BioMed Research International 2014 (2014): 1–20. http://dx.doi.org/10.1155/2014/454503.

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Background.Over the recent years, radiopharmaceutical chemistry has experienced a wide variety of innovative pushes towards finding both novel and unconventional radiochemical methods to introduce fluorine-18 into radiotracers for positron emission tomography (PET). These “nonclassical” labeling methodologies based on silicon-, boron-, and aluminium-18F chemistry deviate from commonplace bonding of an [18F]fluorine atom (18F) to either an aliphatic or aromatic carbon atom. One method in particular, the silicon-fluoride-acceptor isotopic exchange (SiFA-IE) approach, invalidates a dogma in radio
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22

Novosyolov, A., Yu Dreer, I. Novoselova, and Yu Vasina. "EFFICIENCY OF USING A TECHNOGENIC PRODUCT OF ELECTROLYTIC PRODUCTION OF ALUMINUM AS A MINERALIZER WHEN FIRING PORTLAND CEMENT CLINKER." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 7, no. 5 (2022): 71–80. http://dx.doi.org/10.34031/2071-7318-2022-7-5-71-80.

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The possibility of using a technogenic product of the electrolytic production of aluminum (crushed electrodes) as a mineralizing additive during clinker burning is considered. The effectiveness of the action of the mineralizing effect of crushed electrodes and the classical mineralizer - calcium fluoride CaF2 is compared. The amount of mineralizers introduced during clinker burning is 1% according to the content of fluorine ion in the raw mixture. The effectiveness of the action of mineralizers is evaluated by determining the temperature range for the assimilation of calcium oxide into clinker
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23

Usmani, Shirin M., Linn Voss, Ina Stephan, Thomas Hübert, and Erhard Kemnitz. "Improved Durability of Wood Treated with Nano Metal Fluorides against Brown-Rot and White-Rot Fungi." Applied Sciences 12, no. 3 (2022): 1727. http://dx.doi.org/10.3390/app12031727.

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Low-water soluble metal fluorides such as magnesium fluoride (MgF2) and calcium fluoride (CaF2) were evaluated for decay protection of wood. Initially, the biocidal efficacy of nano metal fluorides (NMFs) against wood destroying fungi was assessed with an in-vitro agar test. The results from the test showed that agar medium containing MgF2 and CaF2 was more efficient in preventing fungal decay than stand-alone MgF2 or CaF2. These metal fluorides, in their nanoscopic form synthesized using fluorolytic sol-gel synthesis, were introduced into the sapwood of Scots pine and beech wood and then subj
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24

Jia, Jin Ming, and Bo Li. "Design of Harmful Ion Analyzer in Drinking Water." Applied Mechanics and Materials 421 (September 2013): 808–13. http://dx.doi.org/10.4028/www.scientific.net/amm.421.808.

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This paper describes the design of real-time detection of harmful ions for drinking water, mainly introduces the instrument of automatic liquid injection control mechanism and the signal sampling and processing system design and implementation. The dynamic monitoring analyzer can rapidly detect concentration domestic sewage and drinking water of various ions such as arsenic, fluorine. Test equipment mainly consists of automatic sampling software, signal sampling and processing system, wireless data transmission module. Through the instrument in practical application test of arsenic in drinking
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25

Xu, Guifang, Yonggang Ding, Fan Bai, Youming Zhang, Jianhua Yin, and Caifeng Chen. "AlF3-Modified Carbon Anodes for Aluminum Electrolysis: Oxidation Resistance and Microstructural Evolution." Inorganics 13, no. 5 (2025): 165. https://doi.org/10.3390/inorganics13050165.

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The aluminum electrolysis industry faces significant challenges due to the high consumption and environmental impact of carbon anodes, which are prone to oxidation in high-temperature and strongly oxidizing environments. This study innovatively introduces aluminum fluoride (AlF3) as an additive to enhance the oxidation resistance of carbon anodes for aluminum electrolysis. By systematically exploring microstructural evolution through SEM, XRD, Raman spectroscopy, and permeability analyses, it reveals that AlF3 inserts fluorine atoms into carbon interlayers, forming F-C bonds that reduce interl
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26

Anikanova, L. A. "Acid fluoride in ceramic material production." Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture 26, no. 2 (2024): 148–56. http://dx.doi.org/10.31675/1607-1859-2024-26-2-148-156.

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Purpose: The aim of this work is to develop fluorine anhydrite-based ceramic materials and engineering concept for their production and identify the conditions for the ceramic body formation and strength improvement.Methodology/approach: Acid fluoride without aditional processing and ash from thermal power plants are used in the experiment. Sodium silicate solution and the aluminum powder are introduced in the melt for the mullite formation. The phase composition is investigated on a Shimadzu XRD-6000 Diffractometer. Clay is dried to prepare the mixture and then it is ground in a jaw breaker a
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27

Shapovalov, Yu B., V. Yu Chevychelov, V. S. Korzhinskaya, N. P. Kotova, A. F. Redkin, and A. A. Konyshev. "Physical and chemical parameters of processes producing rare-metal deposits in granitoid systems with fluorine: experimental data." Петрология 27, no. 6 (2019): 617–37. http://dx.doi.org/10.31857/s0869-5903276617-637.

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The problem of the origin of rare-metal deposits in granites is considered, taking into account the results of experimental studies, which make it possible to introduce restrictions on the interpretation of geological materials and the construction of genetic models. The role of both magmatic and hydrothermal-metasomatic factors in the formation of various types of rare-metal deposits is discussed. The saturation concentrations of Ta and Nb in granite melt significantly depend on the melt composition, varying from ~ 25 to ~ 0.1 wt.%. They depend on temperature and pressure, to a lesser extent.
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28

Mäntymäki, Miia, Mikko Ritala, and Markku Leskelä. "Metal Fluorides as Lithium-Ion Battery Materials: An Atomic Layer Deposition Perspective." Coatings 8, no. 8 (2018): 277. http://dx.doi.org/10.3390/coatings8080277.

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Lithium-ion batteries are the enabling technology for a variety of modern day devices, including cell phones, laptops and electric vehicles. To answer the energy and voltage demands of future applications, further materials engineering of the battery components is necessary. To that end, metal fluorides could provide interesting new conversion cathode and solid electrolyte materials for future batteries. To be applicable in thin film batteries, metal fluorides should be deposited with a method providing a high level of control over uniformity and conformality on various substrate materials and
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29

Morinaga, Sumiko, Kaisei Hamaguchi, Sou Taminato, Nobuyuki Imanishi, and Daisuke Mori. "Synthesis and Ionic Conductivity of K2Bi1-X Sn x F5-X ." ECS Meeting Abstracts MA2024-02, no. 8 (2024): 1167. https://doi.org/10.1149/ma2024-0281167mtgabs.

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Introduction In recent years, xEVs have been spreading rapidly. In order to extend the driving range, automotive batteries with high energy density and high safety exceeding lithium-ion batteries are required. Solid-state fluoride batteries (SSFBs), in particular, are currently attracting attention as one of the innovative storage batteries with a high theoretical energy density due to multi-electron reactions. Since organic electrolytes are not used, SSFBs have no risk of leakage and firing and a high level of safety. The fluoride ion is expected to be suitable for ion diffusion at a high rat
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30

Hamzah, Mohd Syahir Anwar, Nurul Amira Ab Razak, Celine Ng, et al. "PREPARATION OF THE ELECTROSPUN POLYVINYLIDENE FLUORIDE / POLYVINYL ALCOHOL SCAFFOLD AS A POTENTIAL TISSUE REPLACEMENT." IIUM Engineering Journal 22, no. 1 (2021): 245–58. http://dx.doi.org/10.31436/iiumej.v22i1.1548.

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: Polyvinylidene fluoride (PVDF), a piezoelectric material, is commonly used in tissue engineering due to its potential for mimicking the electrical microenvironment of biological conditions for tissue development. In this present research, polyvinyl alcohol (PVA) was introduced into electrospun PVDF fabrication through an electrospinning process, aiming to enhance the nanofibrous membrane's biocompatibility properties by improving the hydrophilicity properties to act as an artificial tissue scaffold. The electrospun PVDF/PVA membranes are found to be optimum at a PVDF-to-PVA ratio of 90:10 du
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31

Zhong, Chengchao, Tailei Xu, Yu Shintomi, Shintaro Tachibana, Keiji Shimoda, and Yuki Orikasa. "Cation-Anion Engineering for Conductivity Enhancement in Fluorosulfide La2SrF4S2." ECS Meeting Abstracts MA2024-02, no. 48 (2024): 3403. https://doi.org/10.1149/ma2024-02483403mtgabs.

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The development of high-performance fluoride-ion (F−) conductors is essential for the practical application of all-solid-state F− batteries, which are expected to have a high energy density (5000 W·h/L). To date, the crystal structures of the F− conductors have been mainly limited to perovskite-, fluorite- and tyssonite-type fluorides. None of these fluorides has yet been found to have high conductivity and a wide potential window at room temperature, necessitating a paradigm shift in materials development. We found in fluorosulfides La2SrF4S2, the triple-fluorite layer La2SrF4 allows for a tw
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32

Han, Runlin, Yuxuan Tao, and Liang Zhou. "Growth Study of Hierarchical Pore SSZ-13 Molecular Sieves with Improved CO2 Adsorption Performance." Nanomaterials 11, no. 12 (2021): 3171. http://dx.doi.org/10.3390/nano11123171.

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SSZ-13, with a unique pore structure and excellent thermal stability, showed a potential application in the adsorption and catalysis industry. In this work, Al(NO3)3 was used as an Al source to study the performance and morphology of the zeolite. The zeolite was prepared with an unconventional process by adding an Al source before the structure-directing agent and base. When inorganic oxygen-containing anions were introduced into the unconventional synthesis system, the crystals of the zeolite conform to the unconventional growth mode. The zeolites with large crystals were assembled from small
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33

CHEN, LIJUN, ZHEQING GONG, and ZHENGRONG FU. "Study on Organic Fluorine Modified Cationic Acrylic Resin and its Application in Cathodic Electrodeposition Coatings." Journal of Polymer Materials 40, no. 3-4 (2024): 157–64. http://dx.doi.org/10.32381/jpm.2023.40.3-4.3.

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The organic fluorine modified/containing cationic acrylic resin is prepared via solution polymerization technique using hexafluorobutyl methacrylate (HFMA) along with butyl acrylate (BA), methyl methacrylate (MMA), styrene (St), dimethylaminoethyl methacrylate (DMAEMA) and hydroxy propyl methacrylate (HPMA) as the comonomers, proprylene glycol monomethyl ether (PGME) as the solvent, and 2, 2-Azo-bis-iso-butyronitrile (AIBN) as the initiator. The synthesized resin in which fluorine atom is introduced into the polymer chains. The cathodic electrodeposition (CED) coatings were prepared by mixing
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34

Zhang, Jin Rui, Jing Li, and Hao Zhang. "The Modification of Natural Zeliote and its Application of the Drinking Water." Advanced Materials Research 550-553 (July 2012): 2090–93. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.2090.

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As a kind of rich resources and cheap materials, natural zeolites because of its unique adsorptive characteristics were widely used in drinking water purification at present. The paper introduced the modification methods of natural zeolites mainly acid or alkali, salt, heat treatment, change silicon aluminium and etc. And introduces the application of zeolite in drinking water purification mainly include: fluoride, ammonia nitrogen and deferrizers and etc.
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35

Jwad, Rasha S., Alan H. C. Pang, Luke Hunter, and Roger W. Read. "In Pursuit of Fluorinated Sigma Receptor Ligand Candidates Related to [18F]-FPS." Australian Journal of Chemistry 72, no. 3 (2019): 213. http://dx.doi.org/10.1071/ch18510.

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This paper describes the synthesis of N-arylmethyl(1-benzyl) and N-aroyl(1-benzoyl) 4-(4-fluoromethylphenoxymethyl)piperidines as potential sigma receptor ligands analogous to the potent and highly selective sigma-1 ligand [18F]-FPS, but with enhanced or alternative binding and transport profiles. The synthesis involves N-aroylation of 4-hydroxmethylpiperidine or ethyl nipecotate, functional group manipulation of the ester group or simple activation of the hydroxyl group to introduce the phenoxy component, and subsequent functional group manipulation to reduce the amide group and introduce the
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36

Zhang, Dong, Kai Qiao, Jiawei Hua, et al. "Preparation of fluoroalkoxy or fluorophenoxy substituted N-heterocycles from heterocyclic N-oxides and polyfluoroalcohols." Organic Chemistry Frontiers 5, no. 15 (2018): 2340–44. http://dx.doi.org/10.1039/c8qo00499d.

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37

Mao, Rihua, Liyuan Zhang, and Ren-Yuan Zhu. "A Search for Scintillation in Doped Cubic Lead Fluoride Crystals." IEEE Transactions on Nuclear Science 57, no. 6 (2010): 3841–45. http://dx.doi.org/10.1109/tns.2010.2076372.

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An effort was made to introduce scintillation light in lead fluoride crystals by selective doping. It was found that some rare earth ions doped in the lead fluoride crystal may serve as luminescence centers. The photo- and X- luminescence spectra, the decay time constants and the light outputs were measured for these doped samples. The decay time was found to be at a few milliseconds for these rare earth doped lead fluoride samples, which is too long to be useful for the homogeneous hadronic calorimeter detector concept with dual readout for future high energy physics experiments. Work to intr
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38

Wang, Yen-Zen, Wen-Yi Chen, Chao-Chen Yang, Chen-Lung Lin, and Feng-Chih Chang. "Novel epoxy nanocomposite of lowDk introduced fluorine-containing POSS structure." Journal of Polymer Science Part B: Polymer Physics 45, no. 4 (2007): 502–10. http://dx.doi.org/10.1002/polb.20892.

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39

Geiken, Antje, Louise Holtmann, Christian H. Splieth, Jonas Conrad, Christof E. Doerfer, and Christian Graetz. "Are the Dental Guidelines for Early Dental Visits and Fluoridation Measures Supported by Pediatricians, and What Are Their Caries Prevention Efforts?" Journal of Clinical Medicine 11, no. 5 (2022): 1159. http://dx.doi.org/10.3390/jcm11051159.

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(1) Background: In Germany, new recommendations for dental examinations of children and the use of fluorides have been introduced. The pediatrician (PA) should refer the patient to the dentist for dental examinations and check-ups (DEs) from the sixth month of age. Therefore, our aim was to determine with a questionnaire the extent to which PAs find DE useful, make referrals for DE and recommend fluoride. (2) Methods: The nationwide empirical survey was conducted with a self-developed and validated standardized online questionnaire. In addition to personal information, 16 items were collected.
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40

Eremenko, V. V., V. I. Makarov, V. V. Zhukov, et al. "Influence of fluorine on the superconducting properties of YBa2Cu3O7–y." Soviet Journal of Low Temperature Physics 18, no. 4 (1992): 244–47. https://doi.org/10.1063/10.0033131.

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Complex investigations of yttrium-based HTS compounds containing 0<x <1.5 fluorine are investigated. Knight shift has been observed in 19F nuclei and may serve as a reliable indicator of fluorine in the crystal lattice of Y-based compounds. Fluorine was introduced into the compound by the method of solid phase diffusion by replacing a part of Y2O3 with YF3. Three samples of multiphase Y-based compounds have revealed a metastable superconducting state at a temperature of ∼240 K.
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41

Williams, Haley, Sander Ratso, and Raluca O. Scarlat. "Oxide Speciation and Oxy-Fluoro Complexes in Molten Fluoride Salts." ECS Meeting Abstracts MA2024-02, no. 57 (2024): 3832. https://doi.org/10.1149/ma2024-02573832mtgabs.

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The presence and speciation of oxides are relevant to various engineering applications of molten fluoride salts. Here, our studies are directed toward two primary applications: 1) as coolants, fuel salts, or breeding blankets in advanced fission and fusion reactors, and 2) as the reaction medium for the novel direct synthesis of Li-ion battery cathodes from Li-ores. In an advanced nuclear reactor, oxide might be introduced to the molten fluoride coolant/blanket via ingress of oxygen or moisture from air. Oxygen and moisture act as oxidants, reacting with the metal fluoride to produce metal oxi
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42

Wang, Jiang, María Sánchez-Roselló, José Luis Aceña, et al. "Fluorine in Pharmaceutical Industry: Fluorine-Containing Drugs Introduced to the Market in the Last Decade (2001–2011)." Chemical Reviews 114, no. 4 (2013): 2432–506. http://dx.doi.org/10.1021/cr4002879.

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43

Atezhanov, D., T. Supiyev, and B. Bakiyev. "Ways to Improve the Prevention of Dental Diseases in Children and Adolescents in Modern Condition in Almaty." Bulletin of Science and Practice 5, no. 7 (2019): 99–106. https://doi.org/10.33619/2414-2948/44/11.

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It is well known that monitoring the effectiveness of primary prevention and the quality of dental care to the population is one of the most important components of any health care system. During the period from 1989 to 2005, the Republican “Program of comprehensive prevention of dental diseases in children” was actively introduced in the Republic of Kazakhstan. During this period in Almaty, the provision of dentists amounted to 4.5 positions per 10 thousand children, the staffing level of the posts was 100%. As a result, 54.5% of the children's population was covered by preven
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44

Sinnaeve, Davy, Abir Ben Bouzayene, Emile Ottoy, et al. "Fluorine NMR study of proline-rich sequences using fluoroprolines." Magnetic Resonance 2, no. 2 (2021): 795–813. http://dx.doi.org/10.5194/mr-2-795-2021.

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Abstract. Proline homopolymer motifs are found in many proteins; their peculiar conformational and dynamic properties are often directly involved in those proteins' functions. However, the dynamics of proline homopolymers is hard to study by NMR due to a lack of amide protons and small chemical shift dispersion. Exploiting the spectroscopic properties of fluorinated prolines opens interesting perspectives to address these issues. Fluorinated prolines are already widely used in protein structure engineering – they introduce conformational and dynamical biases – but their use as 19F NMR reporter
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45

Castillo-Toraya, Gabriela, Mesías Orozco-Ic, Eugenia Dzib, et al. "Planar tetracoordinate fluorine atoms." Chemical Science 12, no. 19 (2021): 6699–704. http://dx.doi.org/10.1039/d1sc01325d.

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46

Lee, Jiwhan, Haeseok Park, Seong Hoon Choi, Mun Seung Do, and Hansu Kim. "Enhanced Electrochemical Performance of Lithium Metal Batteries with Fluorine Doped SO2 Based Nonflammable Inorganic Electrolytes." ECS Meeting Abstracts MA2023-01, no. 4 (2023): 829. http://dx.doi.org/10.1149/ma2023-014829mtgabs.

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With the demands for high energy density of lithium ion batteries(LIBs), replacing conventional anode of LIBs with lithium metal provide a great opportunity to overcome the limits of batteries because of their high-energy-density. However, utilizing lithium metal in battery system has problems like uncontrollable lithium dendrite growth during lithium plating/stripping and unstable solid electrolyte interface(SEI) on lithium metal which can cause short circuit of batteries. Fluorine is one of the well-known components to stabilize SEI layer in the battery system using commercial organic electr
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47

Zhang, Xiao-Feng, Peng Dong, Ying-Jie Zhang, et al. "Pd Nanoparticles Self-Assembled on Fluorine-Modified MWCNTs as Electro-Catalysts for Methanol Electro-Oxidation." Nano 12, no. 03 (2017): 1750031. http://dx.doi.org/10.1142/s179329201750031x.

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Multi-walled carbon nanotubes (MWCNTs) were modified by hydrogen fluoride (HF) in a simple method. With the help of fluorine, Pd nanoparticles (3.9[Formula: see text]nm) synthesized by a one-step photochemical reduction were uniformly self-assembled on the active sites of functionalized MWCNTs and a new catalyst (Pd/HF-MWCNT) was obtained. UV–Vis absorption spectra, transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were used. The results demonstrated that –F groups were introduced onto the surface of M
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48

Morita, Masato, Shigeyuki Yamada, and Tsutomu Konno. "Systematic Studies on the Effect of Fluorine Atoms in Fluorinated Tolanes on Their Photophysical Properties." Molecules 26, no. 8 (2021): 2274. http://dx.doi.org/10.3390/molecules26082274.

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In this study, we synthesized a series of fluorinated and non-fluorinated tolanes, in which one or more fluorine atoms were systematically introduced into one aromatic ring of a tolane scaffold, and systematically evaluated their photophysical properties. All the tolanes with or without fluorine substituents were found to have poor photoluminescence (PL) in tetrahydrofuran (THF) solutions. On the other hand, in the crystalline state, non-fluorinated and fluorinated tolanes with one or four fluorine atoms were less emissive, whereas fluorinated tolanes with three or five fluorine atoms exhibite
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49

Walker, Mark C., Benjamin W. Thuronyi, Louise K. Charkoudian, Brian Lowry, Chaitan Khosla, and Michelle C. Y. Chang. "Expanding the Fluorine Chemistry of Living Systems Using Engineered Polyketide Synthase Pathways." Science 341, no. 6150 (2013): 1089–94. http://dx.doi.org/10.1126/science.1242345.

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Organofluorines represent a rapidly expanding proportion of molecules that are used in pharmaceuticals, diagnostics, agrochemicals, and materials. Despite the prevalence of fluorine in synthetic compounds, the known biological scope is limited to a single pathway that produces fluoroacetate. Here, we demonstrate that this pathway can be exploited as a source of fluorinated building blocks for introduction of fluorine into natural-product scaffolds. Specifically, we have constructed pathways involving two polyketide synthase systems, and we show that fluoroacetate can be used to incorporate flu
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50

Wang, Jiuxing, Xichang Bao, Dakang Ding, et al. "A fluorine-induced high-performance narrow bandgap polymer based on thiadiazolo[3,4-c]pyridine for photovoltaic applications." Journal of Materials Chemistry A 4, no. 30 (2016): 11729–37. http://dx.doi.org/10.1039/c6ta04059d.

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