Log in

Relevant bibliographies by topics / Fluorine addition / Journal articles

To see the other types of publications on this topic, follow the link: Fluorine addition.

Journal articles on the topic 'Fluorine addition'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Fluorine addition.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Alonso, Pedro, Pilar Pardo, Francisco J. Fañanás, and Félix Rodríguez. "A fast, efficient and simple method for the synthesis of cyclic alkenyl fluorides by a fluorinative carbocyclization reaction." Chem. Commun. 50, no. 92 (2014): 14364–66. http://dx.doi.org/10.1039/c4cc07376b.

Full text

Abstract:

Tetrafluoroboric acid promotes a fluorinative carbocyclization reaction to give cyclic alkenyl fluorides in a process where the incorporation of the fluorine atom occurs through the nucleophilic addition of a fluoride anion.

APA, Harvard, Vancouver, ISO, and other styles

2

Karpukhina, Natalia, Robert V. Law, and Robert G. Hill. "Solid State NMR Study of Calcium Fluoroaluminosilicate Glasses." Advanced Materials Research 39-40 (April 2008): 25–30. http://dx.doi.org/10.4028/www.scientific.net/amr.39-40.25.

Full text

Abstract:

Fluorine containing calcium aluminosilicate glasses are widely used for a number of technological applications including dental cements, mould fluxes in steel making and in a variety of glass-ceramic systems. Despite of their importance these systems remain quite poorly understood with respect to their composition. To address this question a glass composition corresponding to the equimolar binary system anorthite−fluorite (Ca2Al2Si2O8−CaF2) was chosen as a base point for two series of compositions. One of the series is designed on the anorthite stoichiometry and considered as classically charg

APA, Harvard, Vancouver, ISO, and other styles

3

Baheiraei, Nafiseh, and Mahmoud Azami. "Investigation of Fluorine Incorporation within Gelatin/Calcium Phosphate Nanocomposite Scaffold Prepared through a Diffusion Method." Advanced Composites Letters 22, no. 5 (2013): 096369351302200. http://dx.doi.org/10.1177/096369351302200503.

Full text

Abstract:

In this study diffusional method was used to prepare a biomimetic calcium phosphate/gelatin nanocomposite as a scaffold for bone and tooth tissue engineering. Incorporation of fluorine into mineral phase of the scaffold was also investigated. Addition of fluoride to the synthesis process caused formation of fluoroapatite and calcium fluoride along with hydroxyapatite within gelatin while in the sample lacking fluorine atoms, hydroxyapatite and octacalcium phosphate were detected. With addition of fluorine within the structure of precipitated minerals, morphology of minerals was dramatically ch

APA, Harvard, Vancouver, ISO, and other styles

4

Dibal, H. U., W. N. Dajilak, I. C. Lekmang, L. W. Nimze, and E. Y. Yenne. "Seasonal Variation in Fluoride Content in Groundwaters of Langtang Area, Northcentral Nigeria." Contemporary Trends in Geoscience 6, no. 1 (2017): 11–27. http://dx.doi.org/10.1515/ctg-2017-0002.

Full text

Abstract:

Abstract Thirty groundwater samples were collected at the peak of the rainy season and analysed for fluoride and other cations and anions in drinking water sources of Langtang area. For comparative purposes, thirty seven groundwater samples were collected in the dry season. The aim of the study was to determine variation in fluoride content with respect to the seasons. Fluoride in water was determined by the Ion Selective Electrode (ISE) and the cations by the Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The anion (sulphate) was determined by Multi – Ion Colorimeter, bica

APA, Harvard, Vancouver, ISO, and other styles

5

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.

Full text

Abstract:

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.

APA, Harvard, Vancouver, ISO, and other styles

6

Luo, Yan, Wen Xu Li, Fu Ping Wang, and Jing Zou. "Synthesis and Characterization of Fluorine-Substituted Hydroxyapatite Powder by Polyacrylamide-Gel Method." Advanced Materials Research 152-153 (October 2010): 1305–8. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.1305.

Full text

Abstract:

Fluor-hydroxyapatite (FHA) powder was synthesized using polyacrylamide gel method with Ca(NO3)2•4H2O as raw material of calcium, (NH4)2HPO4 as raw material of phosphor, and different amounts of ammonium fluoride (NH4F) acting as fluorine source. XRD and FT-IR results showed that, the F- enter the crystal lattice of hydroxyapatite and substitute for some of the OH-, and result in the change of the symmetry of crystal structure. As the fluorine addition was increased, the a-axis of the apatite decreased gradually while the c-axis does not obviously changed, and the content of the β-TCP decreased

APA, Harvard, Vancouver, ISO, and other styles

7

Fu, Lingxia, Yanxia Yang, Longlong Zhang, Yuanzhi Wu, Jun Liang, and Baocheng Cao. "Preparation and Characterization of Fluoride-Incorporated Plasma Electrolytic Oxidation Coatings on the AZ31 Magnesium Alloy." Coatings 9, no. 12 (2019): 826. http://dx.doi.org/10.3390/coatings9120826.

Full text

Abstract:

In this study, films with different fluorine contents were prepared on an AZ31 magnesium alloy by using plasma electrolytic oxidation to study the corrosion resistance and cytocompatibility of the alloy. The morphology of the coating surface, phase, and chemical elements were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy-dispersive X-ray spectrometry (EDS). The changes in the corrosion resistance with different fluorine contents were investigated by electrochemical experiments, hydrogen evolution, and long-term immersion tests. In addition, murine fib

APA, Harvard, Vancouver, ISO, and other styles

8

Gatenyo, Julia, and Shlomo Rozen. "Direct addition of fluorine to arylacetylenes." Journal of Fluorine Chemistry 130, no. 3 (2009): 332–35. http://dx.doi.org/10.1016/j.jfluchem.2008.12.009.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Grushevskaya, E. A., S. A. Ibraimova, E. A. Dmitriyeva, et al. "Sensitivity to Ethanol Vapour of Thin Films SnO2 Doped with Fluorine." Eurasian Chemico-Technological Journal, no. 1 (February 20, 2019): 13. http://dx.doi.org/10.18321/ectj781.

Full text

Abstract:

Tin dioxide thin films were obtained by centrifuging. Annealing of samples was carried out in a muffle furnace at a temperature of 400 °C for 15 min, 3, 6 and 12 h. The surface resistance of the films was measured by four-force method. The sensitivity to ethanol vapour was determined by experimental setup that allows measurements in the range from room temperature to 300 °C. There is a change in the acidity of the solution with the addition of ammonium fluoride. To take into consideration this change in acidity, three batches of solutions were prepared: one example without additives, another o

APA, Harvard, Vancouver, ISO, and other styles

10

Šucman, E., and J. Bednář. " Determination of fluoride in plant material using microwave induced oxygen combustion." Czech Journal of Food Sciences 30, No. 5 (2012): 438–41. http://dx.doi.org/10.17221/480/2011-cjfs.

Full text

Abstract:

Fluorine is essential in human and/or animal nutrition, thus it is important to know its concentration in a diet. One of the important sources of fluorine for humans is tea, containing relatively high amounts of this trace element. A method for fluoride determination in various kinds of tea using microwave supported sample preparation in a high pressure oxygen atmosphere followed by potentiometry with a fluoride ion-selective electrode were described. The parameters of the microwave device for such combustion procedure were checked and optimised in order to find settings ensuring complete samp

APA, Harvard, Vancouver, ISO, and other styles

11

Bujnovskij, Alexander S., Vladimir L. Sofronov, Victor Sachkov, and Alexandra V. Anufrieva. "Basic Stages of Magnet Production by Fluoride Technology." Advanced Materials Research 1085 (February 2015): 209–13. http://dx.doi.org/10.4028/www.scientific.net/amr.1085.209.

Full text

Abstract:

This paper presents the results of development of ecological low-waste “dry” fluoride technology of magnetic material production on the basis of rare-earth metals of the Nd-Fe-B-system. The physicochemical fundamentals are stated and the basic stages of the proposed technology are experimentally examined: the fluorination of raw material with elemental fluorine, the production of compact ingot alloys and addition alloys by the calcium-thermal out-of-furnace reduction of fluorides, the production of magnets with the help of the powder metallurgy method using mechanical or hydride grinding, as w

APA, Harvard, Vancouver, ISO, and other styles

12

Chungong, Louis Forto, Mark A. Isaacs, Alexander P. Morrell, et al. "Insight into the atomic scale structure of CaF2-CaO-SiO2 glasses using a combination of neutron diffraction, 29Si solid state NMR, high energy X-ray diffraction, FTIR, and XPS." Biomedical Glasses 5, no. 1 (2019): 112–23. http://dx.doi.org/10.1515/bglass-2019-0010.

Full text

Abstract:

Abstract Bioactive glasses are important for biomedical and dental applications. The controlled release of key ions, which elicit favourable biological responses, is known to be the first key step in the bioactivity of these materials. Properties such as bioactivity and solubility can be tailored for specific applications. The addition of fluoride ions is particularly interesting for dental applications as it promotes the formation of fluoro-apatite. To date there have been mixed reports in the literature on how fluorine is structurally incorporated into bioactive glasses. To optimize the desi

APA, Harvard, Vancouver, ISO, and other styles

13

Mazurek, Ulf, Detlef Schröder, and Helmut Schwarz. "Generation and Reactivity of Chromium Fluoride Cations (CrF+n, n = 0-4) in the Gas Phase." Collection of Czechoslovak Chemical Communications 63, no. 9 (1998): 1498–512. http://dx.doi.org/10.1135/cccc19981498.

Full text

Abstract:

Gaseous chromium fluoride monocations CrFn+ (n = 1-4) can be prepared by sequential fluorine-atom transfer from nitrogen trifluoride, NF3, to chromium cation. In addition, formal F- anion transfer to CrFn+ (n = 2-4) to yield the corresponding neutral chromium fluorides CrFn+1 is observed. In conjunction with a re-evaluation of previous data, the present results provide a consistent picture of the thermochemistry of neutral and cationic chromium fluorides. The reactivity of the CrFn+ ions towards alkanes is investigated in a Fourier-transform ion cyclotron resonance mass spectrometer. While "ba

APA, Harvard, Vancouver, ISO, and other styles

14

Liu, Yinhong, Yuhan Wei, Yongshuang Bian, et al. "A 2-(benzo[d]thiazol-2-yl)phenol based on conjugated polymer: Highly selective colorimetric fluorescent chemosensor for F-depending on Si–O bond cleavage reaction." High Performance Polymers 32, no. 3 (2019): 344–56. http://dx.doi.org/10.1177/0954008319866003.

Full text

Abstract:

Design and synthesis of highly selective fluorine ion probes become particularly important owing to the specific role of fluorine ion in chemical and biomedical progresses. As a new-type of fluorescent material, conjugated polymers with unique photometric properties have been widely researched by scientists in the field of the fluorescence sensors. In this study, the polymer PBTPV-OSi containing benzothiazole moiety is synthesized via palladium-catalyzed Heck coupling reaction. This polymer not only exhibits good solubility in organic solvents but also shows high selectivity for fluorine ion d

APA, Harvard, Vancouver, ISO, and other styles

15

Yuan, Xin, Sen Lin Tian, Ming Jiang, Rong Rong Miao, Qian Wang, and Jian Zhou. "Determination of Fluorine in the Atmosphere Surrounded the Yellow Phosphorous Enterprise Using Ion Chromatography." Applied Mechanics and Materials 507 (January 2014): 773–76. http://dx.doi.org/10.4028/www.scientific.net/amm.507.773.

Full text

Abstract:

Ion chromatography (IC) method was applied to detection of fluorine in the atmosphere calm wind conditions at the area around the yellow phosphorus enterprise. The results indicated that the recovery of standard addition of Fluroide is 96.7%~100.6%. It gives a linear response of chromatographic peak height with respect to the fluoride in the range of 1~25 μg/mL, and the coefficient correlations R value is 0.9994. The concentration of Fluorine in the surrounding of yellow phosphorus enterprise ranging from 100~1500 m varies from 0.641~0.070 mg/m3. The relative standard deviation (RSD) of this m

APA, Harvard, Vancouver, ISO, and other styles

16

Nurmatova, N. T., V. R. Kayumova, D. U. Rakhmatullaeva та F. Kh Khodzhaeva. "Scientific rationale for the use of dietary supplements based on Ganoderma luсidum in the comprehensive prevention of dental caries in children". Стоматология детского возраста и профилактика 20, № 1 (2020): 15–18. http://dx.doi.org/10.33925/1683-3031-2020-20-1-15-18.

Full text

Abstract:

Relevance. Numerous studies on the etiology, diagnosis and treatment of decay of temporary teeth objectify the relevance of this problem. Currently used fluoride preparations are very effective, but nonetheless, there is an increase in caries from year to year. Therefore, as an addition to fluorine preparations, the use of dietary supplements based on Ganoderma Lucidum has been proposed. Purpose. Conduct an open, randomized study of the dietary supplements based on the Ganoderma Lucidum in the comprehensive prevention of dental caries in children. Materials and methods. To achieve this goal, 7

APA, Harvard, Vancouver, ISO, and other styles

17

Román, Raquel, Pablo Barrio, Natalia Mateu, Daniel M. Sedgwick та Santos Fustero. "Copper-Catalyzed Regioselective Synthesis of (E)-β-Fluorovinyl Sulfones". Molecules 24, № 8 (2019): 1569. http://dx.doi.org/10.3390/molecules24081569.

Full text

Abstract:

Organofluorine compounds are finding increasing application in a variety of fields such as pharmaceutical, agrochemical, and material sciences. However, given the scarcity of fluorine-containing natural products, advancement in this area depends almost entirely on the development of new synthetic methodologies. In this article, we present the synthesis of a series of previously undescribed (E)-β-fluorovinyl sulfones via a simple copper-catalyzed addition of hydrogen fluoride to alkynyl sulfone starting materials in varying yields and E/Z selectivities. The hydrogenation of these products was a

APA, Harvard, Vancouver, ISO, and other styles

18

Claves, Daniel, and Jérôme Rossignol. "Fluorine addition to single-wall carbon nanotubes revisited." Chemical Physics Letters 468, no. 4-6 (2009): 231–33. http://dx.doi.org/10.1016/j.cplett.2008.12.018.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Bumgardner, Carl L., James G. Carver, and Robert L. Leonard. "Regioselectivity in addition of atomic fluorine to alkenes." Journal of Fluorine Chemistry 60, no. 2-3 (1993): 275–81. http://dx.doi.org/10.1016/s0022-1139(00)80042-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Richmond, Thomas G., Carolyn E. Osterberg, and Atta M. Arif. "Activation of carbon-fluorine bonds by oxidative addition." Journal of the American Chemical Society 109, no. 26 (1987): 8091–92. http://dx.doi.org/10.1021/ja00260a027.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

PURRINGTON, S. T. "ChemInform Abstract: Addition of Fluorine (into Organic Molecules)." ChemInform 28, no. 4 (2010): no. http://dx.doi.org/10.1002/chin.199704284.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Rozen, Shlomo, and Michael Brand. "Direct addition of elemental fluorine to double bonds." Journal of Organic Chemistry 51, no. 19 (1986): 3607–11. http://dx.doi.org/10.1021/jo00369a011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Song, Yanyan, Yue Zhang, Peijun Zhang, et al. "Effects of Fluorine on Neutrophil Extracellular Trap Formation through Regulating AMPK/p38 Signaling Pathway." Oxidative Medicine and Cellular Longevity 2021 (August 2, 2021): 1–6. http://dx.doi.org/10.1155/2021/6693921.

Full text

Abstract:

Fluorine is an important trace element that is widely dispersed, and studies showed that fluorine could cause severe toxicity to fish. The aim of this study was to investigate the effects of fluorine on neutrophil extracellular trap (NET) formation in common carp and clarify the possible mechanism. The neutrophils were isolated and exposed to 0.25, 0.5, or 1 mM sodium fluoride (NaF). The results showed that NaF could induce the formation of NETs which exhibited a DNA-based network structure modified with histones and myeloperoxidase (MPO). Furthermore, NaF led to the production of reactive oxy

APA, Harvard, Vancouver, ISO, and other styles

24

Ahmad, Yasser, Nicolas Batisse, Xianjue Chen, and Marc Dubois. "Preparation and Applications of Fluorinated Graphenes." C 7, no. 1 (2021): 20. http://dx.doi.org/10.3390/c7010020.

Full text

Abstract:

The present review focuses on the numerous routes for the preparation of fluorinated graphene (FG) according to the starting materials. Two strategies are considered: (i) addition of fluorine atoms on graphenes of various nature and quality and (ii) exfoliation of graphite fluoride. Chemical bonding in fluorinated graphene, related properties and a selection of applications for lubrication, energy storage, and gas sensing will then be discussed.

APA, Harvard, Vancouver, ISO, and other styles

25

Fletcher, Joseph P., Subhash H. Risbud, and R. James Kirkpatrick. "MASS-NMR structural analysis of barium aluminofluorophosphate glasses with and without nitridation." Journal of Materials Research 5, no. 4 (1990): 835–40. http://dx.doi.org/10.1557/jmr.1990.0835.

Full text

Abstract:

The local structure of barium-aluminofluorophosphate (Ba–Al–P–O–F) glasses was investigated using high resolution magic-angle sample spinning nuclear magnetic resonance (MASS-NMR) spectroscopy. The 27Al spectra show three different aluminum environments [Al(4), Al(5), and Al(6)] in these glasses. Changes were observed due to the addition of fluorine and nitrogen. 31P results indicate only one type of phosphorus environment which shifts with fluorine additions. The 19F spectra suggest that fluorine has both Ba and Al as nearest neighbors.

APA, Harvard, Vancouver, ISO, and other styles

26

Danz, Philipp, Venkat Aryan, Edda Möhle, and Nicole Nowara. "Experimental Study on Fluorine Release from Photovoltaic Backsheet Materials Containing PVF and PVDF during Pyrolysis and Incineration in a Technical Lab-Scale Reactor at Various Temperatures." Toxics 7, no. 3 (2019): 47. http://dx.doi.org/10.3390/toxics7030047.

Full text

Abstract:

With a sharp increase in photovoltaic (PV) installations across the world, PV waste is now a relatively new addition to the e-waste category. From 45,000 tonnes in 2016, the PV waste stream is rapidly increasing and is projected to reach 60 million tonnes by 2050. Backsheets are composite structures made from several material layers of polymer, adhesive, and primer. Widely used PV backsheets can be classified into three core types: (a) KPK (Kynar®/polyethylene terephthalate (PET)/Kynar®), (b) TPT (Tedlar®/PET/Tedlar®), and (c) PPE (PET/PET/ethylvinylacetate). Kynar® and Tedlar® are based on po

APA, Harvard, Vancouver, ISO, and other styles

27

Mandl, A., and L. Litzenberger. "Effect of He addition on fluorine‐fueled excimer lasers." Journal of Applied Physics 62, no. 8 (1987): 3097–99. http://dx.doi.org/10.1063/1.339357.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Allayarov, S. R., I. M. Barkalov, L. M. Ivanovo, and I. P. Kim. "Low-temperature addition of molecular fluorine to unsaturated perfluorohydrocarbons." Russian Chemical Bulletin 42, no. 2 (1993): 247–50. http://dx.doi.org/10.1007/bf00697069.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Ou, Xiaobo, and Alexander F. Janzen. "Oxidative fluorination in the Ph2SO–XeF2–Cl− system and fluorine exchange in the Ph2S(O)F2–Ph2S(O)F+ system." Canadian Journal of Chemistry 74, no. 11 (1996): 2002–7. http://dx.doi.org/10.1139/v96-228.

Full text

Abstract:

Oxidative fluorination of diphenyl sulfoxide with xenon difluoride occurs under mild conditions in the presence of chloride ion to give Ph2S(O)F2 in quantitative yield. Chloride ion appears to react with xenon difluoride to generate fluoride ion, and a mechanism of oxidative fluorination is proposed that involves anionic Ph2S(O)F− and radical Ph2S(O)F• intermediates. Addition of cationic Ph2S(O)F+ to Ph2S(O)F2 initiates rapid fluorine exchange, presumably via a symmetrical fluorine-bridged intermediate, and this exchange process was monitored by 13C and 19F NMR spectroscopy. In the presence of

APA, Harvard, Vancouver, ISO, and other styles

30

Hanifi, Amir R., Annaik Genson, Michael J. Pomeroy, and Stuart Hampshire. "An Introduction to the Glass Formation and Properties of Ca-Si-Al-O-N-F Glasses." Materials Science Forum 554 (August 2007): 17–23. http://dx.doi.org/10.4028/www.scientific.net/msf.554.17.

Full text

Abstract:

Ca-Sialon glasses have been known for some time [1] and they are effectively calciumalumino- silicate glasses containing nitrogen which improves their mechanical properties. Calciumalumino- silicate glasses containing fluorine are known to have useful characteristics as potential bioactive materials [2]. Therefore, the combination of both nitrogen and fluorine additions to these glasses may give useful bioglasses with enhanced mechanical stability.Addition of fluorine to oxynitride glasses was not reported previously and this paper gives the first report of the glass forming regions (and evalu

APA, Harvard, Vancouver, ISO, and other styles

31

Sych, O. "Effect of fluorine addition on the structure and properties of high-porous glass ceramics applicable for reconstructive surgery." Functional materials 23, no. 4 (2017): 046–51. http://dx.doi.org/10.15407/fm24.01.046.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Tang, Jie, Yindong Dai, Jingjing Wang, et al. "Study on Environmental Factors of Fluorine in Chagan Lake Catchment, Northeast China." Water 13, no. 5 (2021): 629. http://dx.doi.org/10.3390/w13050629.

Full text

Abstract:

The Chagan Lake Catchment is located in the midwest of Songnen Plain, which is a typical high fluoride groundwater area. High fluoride water has an important impact on the economic development and ecosystem stability of Chagan Lake. In this study, the spatial distribution characteristics and influencing factors of fluorine in Chagan Lake Catchment are discussed by using hydrochemistry and mathematical statistical analysis. The groundwater in the study area was characterized as Na+-rich and Ca2+-poor, with a high pH value and high HCO3– content. The average concentration of F– was 3.02 mg/L, wh

APA, Harvard, Vancouver, ISO, and other styles

33

Kacimi, Larbi, Angélique Simon-Masseron, Abdelhamid Ghomari, and Zoubir Derriche. "Reduction of clinkerisation temperature by addition of fluorine-containing salts." Annales de Chimie Science des Matériaux 31, no. 1 (2006): 61–73. http://dx.doi.org/10.3166/acsm.31.61-73.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Kacimi, Larbi, Angélique Simon-Masseron, Abdelhamid Ghomari, and Zoubir Derriche. "Reduction of clinkerisation temperature by addition of salts containing fluorine." Canadian Journal of Civil Engineering 33, no. 8 (2006): 1090–97. http://dx.doi.org/10.1139/l06-047.

Full text

Abstract:

The influence of some salts containing fluorine (CaF2, NaF, and KF) on the reduction of burning temperature of Portland clinker from three Algerian cement factories (units of Zahana, Beni-Saf, Chlef) has been studied in this paper. X-Ray fluorescence, optical microscope technique, and powder X-ray diffraction were then used to characterize each clinker and its raw mixture in terms of chemical composition and clinker mineralogical composition. The effects of these mineralizers on structural and morphological properties of clinker minerals and on the presence of alite were investigated by scanni

APA, Harvard, Vancouver, ISO, and other styles

35

BUMGARDNER, C. L., J. G. CARVER, and R. L. LEONARD. "ChemInform Abstract: Regioselectivity in Addition of Atomic Fluorine to Alkenes." ChemInform 25, no. 7 (2010): no. http://dx.doi.org/10.1002/chin.199407064.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Hampshire, Stuart, Amir R. Hanifi, Annaik Genson, and Michael J. Pomeroy. "Ca-SiAlON Glasses: Effects of Fluorine on Glass Formation and Properties." Key Engineering Materials 352 (August 2007): 165–72. http://dx.doi.org/10.4028/www.scientific.net/kem.352.165.

Full text

Abstract:

Oxynitride glasses are effectively alumino-silicate glasses in which nitrogen substitutes for oxygen in the glass network, resulting in increases in glass transition and softening temperatures, viscosities (by two to three orders of magnitude), elastic moduli and microhardness. Calcium alumino-silicate glasses containing fluorine are known to have useful characteristics as potential bioactive materials. Therefore, the combination of both nitrogen and fluorine additions to these glasses may give useful bioglasses with enhanced mechanical stability. This paper gives a review of oxynitride glasse

APA, Harvard, Vancouver, ISO, and other styles

37

Van Lier, Gregory, Christopher P. Ewels, Filippo Zuliani, Allesandro De Vita, and Jean-Christophe Charlier. "Theoretical Analysis of Fluorine Addition to Single-Walled Carbon Nanotubes: Functionalization Routes and Addition Patterns." Journal of Physical Chemistry B 109, no. 13 (2005): 6153–58. http://dx.doi.org/10.1021/jp046005q.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Jung, Kyuhong, Donghoon Ro, and Young-Kwon Park. "Estimation, and Framework Proposal of Greenhouse Gas Emissions of Fluorinated Substitutes for Ozone-Depleting Substances by Application Area in the Republic of Korea." Sustainability 12, no. 16 (2020): 6355. http://dx.doi.org/10.3390/su12166355.

Full text

Abstract:

Since fluorine compounds have both high ozone depletion potential and high global warming potential, the study of hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs) is crucial for climate change research. In this study, greenhouse gas (GHG) emissions from ozone-depleting industries in the Republic of Korea were estimated based on survey data on the use of fluorine compounds. This study is a response to the growing global attention to halocarbons that arose from the Kigali Amendment to the Montreal Protocol. Survey data on the consumption of fluorine compounds by application area were used t

APA, Harvard, Vancouver, ISO, and other styles

39

Kazanski, Barbara, Alexei Kossenko, Alex Lugovskoy, and Michael Zinigrad. "Fluoride Influence on the Properties of Oxide Layer Produced by Plasma Electrolytic Oxidation." Defect and Diffusion Forum 326-328 (April 2012): 498–503. http://dx.doi.org/10.4028/www.scientific.net/ddf.326-328.498.

Full text

Abstract:

Plasma Electrolytic Oxidation (PEO) is a powerful technique allowing hardening and corrosion protection of valve metals due to formation of an oxide layer on the metal surface. The addition of fluoride ions to the alkaline electrolyte for the PEO processing of aluminum and magnesium alloys produces significant changes in the structure and properties of the coating [1-, however the mechanism of these changes is not clear. A study of the influence of the fluoride concentration on the composition, structure and morphology of thin (to 20 µm) PEO layers was performed. The oxide layer thickness on a

APA, Harvard, Vancouver, ISO, and other styles

40

Zamyatin, Nikolaj, Gennadij Smirnov, Yuri Fedorchuk, and Olga Rusina. "Fuzzy batch controller for granular materials." MATEC Web of Conferences 143 (2018): 04003. http://dx.doi.org/10.1051/matecconf/201814304003.

Full text

Abstract:

The paper focuses on batch control of granular materials in production of building materials from fluorine anhydrite. Batching equipment is intended for smooth operation and timely feeding of supply hoppers at a required level. Level sensors and a controller of an asynchronous screw drive motor are used to control filling of the hopper with industrial anhydrite binders. The controller generates a required frequency and ensures required productivity of a feed conveyor. Mamdani-type fuzzy inference is proposed for controlling the speed of the screw that feeds mixture components. As related to pr

APA, Harvard, Vancouver, ISO, and other styles

41

Ahmedbeyli, R. M., A. M. Safarov, F. Y. Mamedov, C. R. Ahmedbeyli, and N. N. Kononkova. "Influence of fluorinated and iodized salt on mineral composition of deciduous teeth formed in biogeochemical deficiency of fluoride and iodide." Kazan medical journal 97, no. 4 (2016): 565–71. http://dx.doi.org/10.17750/kmj2015-565.

Full text

Abstract:

Aim. To study the content of Ca, P, F and I in enamel and dentin composition of deciduous teeth, which are formed in fluoride and iodide deficiency, and its dynamics on the background of the 3-year consumption of fluorinated and iodized salt.Methods. The mineral composition of the deciduous teeth enamel and dentin of 6-12 years old children, born and living in conditions of biogeochemical deficiency of fluoride (0.02-0.08 ppm F in water) and iodide (0.033-0.005 ppm I in water) before and after consumption of fluorinated and iodized salt containing sodium fluoride 300±50 ppm F and potassium iod

APA, Harvard, Vancouver, ISO, and other styles

42

Amruthaluru, Saikiran, Siva Kumar Mamidi, Manu Harilal, Hariprasad Sampatirao, and Rameshbabu Nagumothu. "Synthesis of Carbonate and Fluorine Substituted Nanocrystalline Hydroxyapatite by Mechanochemical Method." Key Engineering Materials 833 (March 2020): 204–8. http://dx.doi.org/10.4028/www.scientific.net/kem.833.204.

Full text

Abstract:

The present work is aimed at the synthesis of fluorine substituted and carbonate substituted hydroxyapatites (FHA, CHA) by the mechanochemical method. The shortest milling time required for the synthesis of FHA and CHA using calcium hydroxide and diammonium hydrogen phosphate as precursors was estimated. In addition to the Ca and P precursors, ammonium carbonate and ammonium fluoride were used for carbonate and fluorine substitutions, respectively. Thermal stability of the synthesized FHA and CHA was evaluated. The phase composition and crystallite size were evaluated by the X-Ray Diffraction

APA, Harvard, Vancouver, ISO, and other styles

43

Toyota, Akemi, Chie Habutani, Nobuya Katagiri, and Chikara Kaneko. "Addition of molecular fluorine to bicyclo[2.2.1]hept-2-ene derivatives and conversion to fluorine-containing carbocyclic nucleosides." Tetrahedron Letters 35, no. 31 (1994): 5665–68. http://dx.doi.org/10.1016/s0040-4039(00)77274-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Toyota, Akemi, Minaho Uchiyama, and Chikara Kaneko. "Addition of molecular fluorine to 7-oxabicyclo[2.2.1]hept-5-ene derivative and conversion to fluorine substituted deoxyhexofuranosides." Tetrahedron 53, no. 18 (1997): 6327–36. http://dx.doi.org/10.1016/s0040-4020(97)00317-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Delvigs, Peter, David L. Klopotek, and DeNise Hardy-Green. "Addition Polyimides from Non-Mutagenic Diamines." High Performance Polymers 13, no. 4 (2001): 301–12. http://dx.doi.org/10.1088/0954-0083/13/4/308.

Full text

Abstract:

Studies were conducted to find an acceptable non-mutagenic diamine to replace 4,4′-methylenedianiline (MDA), a suspect carcinogen, which is currently being used in PMR-15 polyimide applications. Several diamines containing fluorine and trifluoromethyl substituent groups were synthesized. The diamines were polymerized with the dimethyl ester of 3,3′,4,4′ -benzophenonetetracarboxylic acid (BTDE), using the monomethyl ester of nadic acid (NE) as an endcap. The effect of diamine structure on rheological properties, glass transition temperature, and thermo-oxidative stability was investigated. Unid

APA, Harvard, Vancouver, ISO, and other styles

46

Liu, Zhi-Jie, Shi-Jin Ding, Peng-Fei Wang, et al. "Effects of fluorine addition on driving force for CVD diamond growth." Thin Solid Films 368, no. 2 (2000): 208–10. http://dx.doi.org/10.1016/s0040-6090(00)00766-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Dongqi Shi, Lin Wang, Jung Ho Kim, et al. "YBCO Film With Sm Addition Using Low-Fluorine TFA-MOD Approach." IEEE Transactions on Applied Superconductivity 19, no. 3 (2009): 3208–11. http://dx.doi.org/10.1109/tasc.2009.2019211.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

FEIRING, A. E. "ChemInform Abstract: Addition of Fluorine and Other Elements (into Organic Molecules)." ChemInform 28, no. 4 (2010): no. http://dx.doi.org/10.1002/chin.199704286.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Ren, Li, Fansen Zeng, Ping Ning, Zhiquan Chen, and Tze-Man Ko. "Effects of addition orders on the properties of fluorine-containing copolyimides." Journal of Applied Polymer Science 77, no. 14 (2000): 3252–58. http://dx.doi.org/10.1002/1097-4628(20000929)77:14<3252::aid-app300>3.0.co;2-y.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Chen, Yanming, and Xigeng Miao. "Effect of fluorine addition on the corrosion resistance of hydroxyapatite ceramics." Ceramics International 30, no. 7 (2004): 1961–65. http://dx.doi.org/10.1016/j.ceramint.2003.12.182.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!