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Journal articles on the topic 'Diffusion hydroxide'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Ngo, Hung Xuan, and Bulgakov B. I. "Determining the diffusion coefficient of Ca(OH)2 in concrete with age in an artificial seawater environment." Journal of Mining and Earth Sciences 65, no. 5 (2024): 73–81. http://dx.doi.org/10.46326/jmes.2024.65(5).08.

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Concrete structures exposed to marine environments, which contain high levels of Cl- and SO42- ions, accelerate the diffusion process of calcium hydroxide (Ca(OH)2), particularly in tidal zones due to the combined effects of carbonation and mechanical erosion from waves. The characteristic feature of the diffusion process of calcium hydroxide in concrete within marine environments is the diffusion coefficient of calcium hydroxide (k). This study involves an experiment to determine the calcium hydroxide content in concrete submerged in water containing 5% NaCl. Experimental results were combine

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2

Zelovich, Tamar, and Mark E. Tuckerman. "OH− and H3O+ Diffusion in Model AEMs and PEMs at Low Hydration: Insights from Ab Initio Molecular Dynamics." Membranes 11, no. 5 (2021): 355. http://dx.doi.org/10.3390/membranes11050355.

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Fuel cell-based anion-exchange membranes (AEMs) and proton exchange membranes (PEMs) are considered to have great potential as cost-effective, clean energy conversion devices. However, a fundamental atomistic understanding of the hydroxide and hydronium diffusion mechanisms in the AEM and PEM environment is an ongoing challenge. In this work, we aim to identify the fundamental atomistic steps governing hydroxide and hydronium transport phenomena. The motivation of this work lies in the fact that elucidating the key design differences between the hydroxide and hydronium diffusion mechanisms wil

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3

Mizrachi, S., and M. Hunger. "Proton diffusion in calcium hydroxide." Journal of Physics: Condensed Matter 2, no. 6 (1990): 1499–507. http://dx.doi.org/10.1088/0953-8984/2/6/009.

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4

Piana, Tatiana Dantas, Maria de Fátima Malvar Gesteira, Erica Dos Santos Carvalho, et al. "Evaluation of the antimicrobial effect of calcium hydroxide combined to different vehicles." Revista Odonto Ciência 31, no. 2 (2016): 89. http://dx.doi.org/10.15448/1980-6532.2016.2.21522.

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Objective: To evaluate the potentiating effect of different substances in antimicrobial action of calcium hydroxide.Methods: The agar diffusion method, was used with well technique, to analyze seven substances associated to calcium hydroxide to make some pastes, they are: chlorexidine, saline, anesthetic, malvatricin, propolis, hypochlorite, paramonochlorophenol.Results: The pastes with malvatricin and paramonochlorophenol presented greater inhibition zones against Enterococcus faecalis.Conclusion: There was potentialization in antimicrobial effect of calcium hydroxide when associated to param

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Zelovich, Tamar, and Mark E. Tuckerman. "(Invited) First-Principles Molecular Dynamics Investigations of Proton and Hydroxide Transport in Model Anion-Exchange- and Proton-Exchange Membranes in Nanoconfined, Low-Hydration Environments." ECS Meeting Abstracts MA2023-01, no. 45 (2023): 2473. http://dx.doi.org/10.1149/ma2023-01452473mtgabs.

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Fuel cell-based anion-exchange membranes (AEMs) and proton exchange membranes (PEMs) have considerable potential as cost-effective, clean energy conversion devices. However, a fundamental atomistic understanding of the hydroxide and hydronium diffusion mechanisms in AEM and PEM environments is an ongoing challenge. In recent years, nano-confined structures have been exploited in the study of cost-effective and reliable polymer architectures for electrochemical devices. In this study, first-principles molecular dynamics simulations are employed to investigate the influence of the water distribu

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6

Leaist, Derek G., and Betty Wiens. "Interdiffusion of acids and bases•HCl and NaOH in aqueous solution." Canadian Journal of Chemistry 64, no. 5 (1986): 1007–11. http://dx.doi.org/10.1139/v86-169.

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Stokes magnetically stirred diaphragm cells have been used to measure interdiffusion of hydrochloric acid and sodium hydroxide in aqueous solution at 25 °C. Expressions are developed to estimate ternary diffusion coefficients for these mixtures. The analysis reveals sharp discontinuities between the diffusion properties of HCl-rich and NaOH-rich mixtures. Although the diffusion coefficients are sensitive to concentration, accurate analytic approximations for rates of interdiffusion can be obtained by averaging coefficients along the diffusion path. When HCl and NaOH interdiffuse, proton-couple

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7

Valerii, Kotok, and Kovalenko Vadym. "DEFINITION OF THE INFLUENCE OF OBTAINING METHOD ON PHYSICAL AND CHEMICAL CHARACTERISTICS OF NI (OH)2 POWDERS." Eastern-European Journal of Enterprise Technologies 1, no. 12 (97) (2019): 21–27. https://doi.org/10.15587/1729-4061.2019.156093.

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Four types of hydroxide were chosen for the study. Two of them were synthesized using the industrial method and are used in alkaline batteries. The other two nickel hydroxide powders were synthesized according to the method described in modern literature. The first hydroxide was synthesized using the hydrolytic method from a solution of nickel salt and urea. The other was synthesized from a solution containing a mixture of nickel and aluminum salts in a 4:1 ratio and was precipitated with a solution of alkali. As a result, all chosen hydroxide powders differ in physico-chemical parameters: str

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8

Német, Norbert, Hugh Shearer Lawson, Masaki Itatani, et al. "A Non-Autonomous Amphoteric Metal Hydroxide Oscillations and Pattern Formation in Hydrogels." Molecules 30, no. 6 (2025): 1323. https://doi.org/10.3390/molecules30061323.

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Oscillations in animate and inanimate systems are ubiquitous phenomena driven by sophisticated chemical reaction networks. Non-autonomous chemical oscillators have been designed to mimic oscillatory behavior using programmable syringe pumps. Here, we investigated the non-autonomous oscillations, pattern formation, and front propagation of amphoteric hydroxide (aluminum (III), zinc (II), tin (II), and lead (II)) precipitates under controlled pH conditions. A continuous stirred-tank reactor with modulated inflows of acidic and alkaline solutions generated pH oscillations, leading to periodic pre

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Jacobson, Aaron J., Gregory D. Smith, Rallming Yang, and Sujit Banerjee. "Diffusion of sulfide into Southern pine (Pinus taeda L.) and sweetgum (Liquidambar styraciflua L.) particles and chips." Holzforschung 60, no. 5 (2006): 498–502. http://dx.doi.org/10.1515/hf.2006.082.

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Abstract Sulfide diffusion into wood has a rapid reversible component and a much slower irreversible component. During the initial reversible phase, sulfide is unable to diffuse into parts of the wood structure, probably because of charge exclusion. The diffusion of hydroxide and sulfide into saturated wood was imaged by immersing chips in white liquor, splitting them open and then imaging the hydroxide and sulfide profiles. Sulfide moves into the interior of the chip at a faster rate than hydroxide does because it is prevented from entering some of the pores and must move deeper into the chip

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10

Leaist, Derek G. "Moments analysis of restricted ternary diffusion: sodium sulfite + sodium hydroxide + water." Canadian Journal of Chemistry 63, no. 11 (1985): 2933–39. http://dx.doi.org/10.1139/v85-486.

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Ternary diffusion coefficients can be determined from restricted-diffusion experiments by evaluating zeroth and first time moments of the difference in a concentration-dependent property measured at two levels along the diffusion column. The method is used to determine ternary diffusion coefficients for aqueous sodium sulfite + sodium hydroxide solutions from conductance measurements. It is shown that these data can be analyzed to obtain the ternary diffusivity of sulfur dioxide in strongly alkaline solutions where sulfite is the major transporting species for the sulfur dioxide component. At

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11

AKMALIA, Widya Nurul, and Trimurni ABIDIN. "Diffusion of calcium ions in one-third of root canals after administration of high molecular Chitosan nanohydroxyapatite medicament (In Vitro)." Journal of Syiah Kuala Dentistry Society 6, no. 2 (2022): 92–97. http://dx.doi.org/10.24815/jds.v6i2.24190.

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ABSTRACT Calcium hydroxide is currently the gold standard medicament. Still, it has the disadvantage of leavinga residue on the surface of the root canal wall. Hence, it can interfere with the setting time and adhesion of the sealermaterial to the root canal wall. This study aims to determine the ability of calcium ion diffusion in one-third of theroot canal after administration of nanohydroxyapatite medicament with a different vehicle than calcium hydroxide.This study used 24 mandibular premolars extracted, decorated, and prepared, then grouped into four treatmentgroups. Based on the paired T

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Zakaria, Myrna Nurlatifah, Yusfien Shabrina Putri, Asih Rahaju, Sri Fatmawati, and Arief Cahyanto. "Inhibitory effect of calcium hydroxide combined with Nigella sativa against Enterococcus faecalis." Dental Journal (Majalah Kedokteran Gigi) 54, no. 4 (2021): 181. http://dx.doi.org/10.20473/j.djmkg.v54.i4.p181-185.

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Background: Calcium hydroxide is the gold standard medicament for root canal treatment. Enterococcus faecalis, the primary cause of intraradicular persistent endodontic infection, is often identified even after endodontic treatment. Thymoquinone, an active ingredient of Nigella sativa, has an antimicrobial effect on both gram-negative and positive bacteria, including E. faecalis. Purpose: This study aimed to evaluate the inhibitory effect of calcium hydroxide combined with Nigella sativa extract and determine the best ratio for the combined material. Methods: This is an experimental study comp

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13

Thomas, Pinku T., Jyoti Sumi Issac, Parvathy Girija, Lekshmi S. Chandran, D. S. Arjun, and A. J. Siddik. "An in vitro comparison of calcium ions release and diffusion ability of calcium hydroxide-based intracanal medicament in combination with three different vehicles like propolis, chitosan, and propylene glycol." Journal of Conservative Dentistry and Endodontics 27, no. 2 (2024): 190–94. http://dx.doi.org/10.4103/jcde.jcde_258_23.

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Abstract Context: Calcium hydroxide, which is an intracanal medicament, is widely used in endodontics. Improvements can be made to its effectiveness, as calcium hydroxide is dependent on the vehicle. Aim: The study aims to compare and evaluate the release and diffusion ability of calcium hydroxide when mixed with – propolis, chitosan, and propylene glycol. Methods: For this study, 33 single-rooted extracted premolar teeth have been decoronated. After the working length and enlargement of the canals had been established, different preparations of calcium hydroxide with vehicles such as propolis

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14

Kopkova, Elena K., and Dmitriy V. Mayorov. "SORPTION CAPACITY OF Mg-Al LAYERED DOUBLE HYDROXIDES WITH RESPECT TO Co (II), Cu (II), Sr (II) AND Cs (I) IONS." Transactions of the Kоla Science Centre of RAS. Series: Engineering Sciences 3, no. 3/2023 (2023): 186–92. http://dx.doi.org/10.37614/2949-1215.2023.14.3.034.

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Mg-Al layered double hydroxides with a hydrotalcite structure have been synthesized. The sorption properties of the synthesized sample with respect to non-ferrous metal ions — Co2+, Cu2+, Sr2+ and Cs+ are investigated. The capacities of the adsorption monolayer of the Mg-Al layered hydroxide sample were calculated, amounting to 2.13, 2.21, 1.88 and 3.48 mmol/g with respect to Co(II), Cu(II), Sr(II) and Cs(I) ions, respectively. It is shown that the sorption process is described by a pseudo-second-order kinetic model and proceeds in a mixed diffusion mode.

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15

Gorbacheva, T. T., D. V. Mayorov, and N. V. Fokina. "Mg – Al layered double hydroxides in the dephosphotation of municipal effluents." Perspektivnye Materialy 5 (2021): 47–57. http://dx.doi.org/10.30791/1028-978x-2021-5-47-57.

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Experimental modeling of phosphates extraction from model solutions and sludge mixture of regional water treatment facilities is carried out. The sorbents used are Mg – Al layered double hydroxides obtained by method of solid-phase synthesis according to patented technology. The experimental data of the PO43– -ions sorption onto Mg – Al LDH most accurately describes by pseudo-first order kinetic model. The process of phosphate ions sorption onto hydroxide form Mg – Al LDH proceeds in a mixed diffusion mode, not only the outer surface of the material, but also the inner surface of the grains is

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16

Wakasugui, Lucas Takeo, Camila Paiva Perin, Allan Abuabara, et al. "Calcium hydroxide diffusion after agitation of endodontic irrigants." Brazilian Journal of Oral Sciences 22 (June 19, 2023): e238670. http://dx.doi.org/10.20396/bjos.v22i00.8668670.

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Aim: To compare the influence of two methods of agitation of endodontics irrigants, by diffusion of calcium hydroxide [Ca(OH)2] through the dentinal tubules, measuring the pH of the medium where they were kept. Methods: Twenty mandibular incisors were prepared using a WaveOne Gold Large file, in a reciprocating movement, and then divided into (n = 10): gutta-percha cone (GPC) or Easy Clean system (ECS) agitation of 1% sodium hypochlorite and 17% ethylenediaminetetraacetic acid. The specimens were filled with Ca(OH)2 paste, placed in flasks with 4 mL of deionized water, and stored in an incubat

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17

Abdul Kareem, Mustafa W., and Zainab A. Al Dhaher. "Evaluation of The Antifungal Activity of Nasturtium officinale (watercress) Oil with Calcium Hydroxide against Candida Albicans Isolated from Root Canal." Journal of Baghdad College of Dentistry 33, no. 4 (2021): 1–5. http://dx.doi.org/10.26477/jbcd.v33i4.3012.

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Background: The interest in herbal extracts as antimicrobial agents has increased over the past few years in endodontic therapy. Nasturtium officinale (watercress) is a promising plant with great medicinal values. This study aimed to investigate the antifungal activity of watercress oil in combination with calcium hydroxide against Candida albicans as intracanal medicament. Materials and Methods: Candida albicans was isolated from patients with necrotic root canal or failed root canal treatment. The sensitivity of Candida albicans to different concentrations of watercress oil extract was deter

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18

Bhoj, Dr Sanket Arjun, Dr Vishal Mahajan, Dr Manjusha Rawtiya, Dr Rajendra Daule, Dr Rohit Dhoot, and Dr Rohini Mahajan. "A Comparative Study of ION Diffusion from Calcium Hydroxide with Various Herbal Pastes through Dentin: An In Vitro Study." Scholars Journal of Dental Sciences 10, no. 04 (2023): 74–76. http://dx.doi.org/10.36347/sjds.2023.v10i04.004.

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Background: Intracanal medicaments used during root canal treatment comes in direct contact with cells of pulp and periapical tissues. The antimicrobial property of calcium hydroxide [Ca(OH)2] is broadly utilized. It has the capability to dissolve organic tissues as well as to inactivate bacterial endotoxins. The aim of this in vitro study is ion diffusion from calcium hydroxide with various herbal pastes through dentin. Materials and Methods: Twenty one extracted single-rooted premolar were selected. The crown was transversely sectioned at the CEJ level. Paste was prepared by using 1gm of cal

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19

Suciu, Ioana, Bogdan Dimitriu, Paula Perlea, et al. "The consequences of remaining calcium hydroxide in the root canal." Romanian Journal of Stomatology 62, no. 1 (2016): 15–18. http://dx.doi.org/10.37897/rjs.2016.1.3.

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Germs removal from endodontic system is achieved both by instrumentation, accompanied by the use of endodontic irrigants and in precise situations, by interposing intracanallary medication. Based on these features, an update and overview of the attributes of calcium hydroxide was acquired, emphasizing the need to remove the residue of calcium hydroxide as an important measure before performing root canal long lasting fillings. The persistence of calcium hydroxide residue, after removal the drug medication, interfere with dentinal tubules diffusion of the sealant.

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20

Shubitidze, M. M., A. B. Adzhieva, N. A. Dadashov, et al. "Comparative properties characteristics of the various pastes based on calcium hydroxide." Endodontics Today 18, no. 1 (2020): 37–40. http://dx.doi.org/10.36377/1683-2981-2020-18-1-37-40.

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Calcium hydroxide is widely used as a interappointment root canal filling material due to its favorable alkaline effect. It is assumed that the action occurs from the diffusion of hydroxyl ions through the apical foramen. The aim of this article was to review studies of the various properties of pure calcium hydroxide, as well as its commercial analogues.

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Tang, Tang, Wen-Jie Jiang, Lu-Pan Yuan, Shuai Niu, Jin-Song Hu, and Li-Jun Wan. "Regulating the charge diffusion of two-dimensional cobalt–iron hydroxide/graphene composites for high-rate water oxidation." Journal of Materials Chemistry A 8, no. 23 (2020): 11573–81. http://dx.doi.org/10.1039/d0ta03895d.

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The importance of charge diffusion in electrocatalysts is shown by regulating the thickness of CoFe hydroxide nanosheets on graphene. The few-layer nanosheets allow effective charge diffusion, enabling a 2000 mA cm<sup>−2</sup> output at only 1.507 V cost in near-industrial conditions.

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22

Dogan, Nüshet. "Comparison of the Antibacterial Effects of Calcium Hydroxide Medicament,Chlorhexidine Gluconate Gel And a Blend Of The Two Materials on Enterococcus faecalis." Türk Diş Hekimliği Araştırma Dergisi 4, no. 1 (2025): 1–11. https://doi.org/10.58711/turkishjdentres.vi.1591364.

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The aim of this study is the comparison of antibacterial effects of calcium hydroxide medicament and chlorhexidine gluconate gel on Enterococcus faecalis. The study is composed of three experimental groups. Antibacterial effects of group 1, calcium hydroxide medicament (Calcicure); group 2, %1 chlorexidine gluconate gel (Corsodyl) and group 3, combination of calcium hydroxide medicament plus chlorexidine gluconate gel equal ratio were examined with agar diffusion method on the 1st, 2nd and 7th days. Inventions are evaluationed as statistical with ANOVA and multiple comparisons tests. In the en

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Al Akhrass, Ghida A., Manal Ammar, Houssam El-Rassy, and Mazen Al-Ghoul. "Self-assembled lanthanum hydroxide microspheres within a reaction–diffusion framework: synthesis, characterization, control and application." RSC Advances 6, no. 5 (2016): 3433–39. http://dx.doi.org/10.1039/c5ra22692a.

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Li, Guowan, Zhujian Huang, Chengyu Chen, et al. "Simultaneous adsorption of trace sulfamethoxazole and hexavalent chromium by biochar/MgAl layered double hydroxide composites." Environmental Chemistry 16, no. 1 (2019): 68. http://dx.doi.org/10.1071/en18132.

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Environmental contextWater contamination by antibiotics and heavy metals entails potential risks to both the environment and human health. Composite materials based on MgAl-layered double hydroxides and biochar simultaneously adsorbed the toxic sulfamethoxazole and CrVI metal species. These findings indicate that biochar/metal hydroxide composites could be valuable adsorbents for the simultaneous removal of trace antibiotics and metals from water. AbstractWater contamination by antibiotics and heavy metals has drawn wide attention because of the potential risks it poses to both the environment

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Melia Rodrigo, M., Miguel A. Esteso, Ana C. F. Ribeiro, et al. "Coupled mutual diffusion in aqueous paracetamol + sodium hydroxide solutions." Journal of Molecular Liquids 334 (July 2021): 116216. http://dx.doi.org/10.1016/j.molliq.2021.116216.

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26

Zelovich, Tamar, and Mark E. Tuckerman. "Water Layering Affects Hydroxide Diffusion in Functionalized Nanoconfined Environments." Journal of Physical Chemistry Letters 11, no. 13 (2020): 5087–91. http://dx.doi.org/10.1021/acs.jpclett.0c01141.

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27

Nakata, Yasushi, Keiji Amitani, Takashi Norisuye, and Shinichi Kitamura. "Translational diffusion coefficient of cycloamylose in aqueous sodium hydroxide." Biopolymers 69, no. 4 (2003): 508–16. http://dx.doi.org/10.1002/bip.10393.

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28

Bae, Sangmi, Ji-Hyun Cha, Jong Hyeon Lee, and Duk-Young Jung. "Nanostructured cobalt hydroxide thin films as high performance pseudocapacitor electrodes by graphene oxide wrapping." Dalton Transactions 44, no. 36 (2015): 16119–26. http://dx.doi.org/10.1039/c5dt02161h.

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Zhou, Xing, Xiaohui Li, Dejian Chen, Danyang Zhao, and Xintang Huang. "Ultrathin CoFe-layered double hydroxide nanosheets embedded in high conductance Cu3N nanowire arrays with a 3D core–shell architecture for ultrahigh capacitance supercapacitors." Journal of Materials Chemistry A 6, no. 47 (2018): 24603–13. http://dx.doi.org/10.1039/c8ta09442j.

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Lizarazo Marriaga, Juan, and Peter Claisse. "The influence of the blast furnace slag replacement on chloride penetration in concrete." Ingeniería e Investigación 31, no. 2 (2011): 38–47. http://dx.doi.org/10.15446/ing.investig.v31n2.23463.

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Corrosion of steel reinforcement due to chloride penetration is the greatest cause of durability problems in concrete; intense international research has been carried out to understand and avoid this. This paper summarises the results of a theoretical and experimental research programme investigating the influence of blast furnace slag on chloride-related transport properties. The relationship between the apparent chloride diffusion coefficient, electrical resistivity and compressive strength was measured. Chloride, hydroxide, sodium and potassium's intrinsic diffusion coefficients were obtain

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Avinash, Alok, Harsha Munot, Rashmi Baranwal, Vijay Duggi, Alok Dubey, and Sulabh Pagaria. "Propolis: A Smart Supplement for an Intracanal Medicament." International Journal of Clinical Pediatric Dentistry 10, no. 4 (2017): 324–29. http://dx.doi.org/10.5005/jp-journals-10005-1459.

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ABSTRACT Introduction One of the most important factors for successful endodontic therapy is root canal cleaning. The difficulty involved in eliminating microorganisms, as well as their residual presence, warrants the use of root canal dressings after biomechanical preparation. Aim The aim of the study was to compare the diffusion ability between nonalcoholic calcium hydroxide—propolis paste, calcium hydroxide—saline paste, and calcium hydroxide—propylene glycol paste. Materials and methods For this proposed study, single-rooted extracted permanent teeth were randomly divided into three groups

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Bhawalkar, Abhilasha, Shreya Gulati, Sanjyot Mulay, and Rajesh Shetty. "Antibacterial effectiveness of natural products alone and in combination with Calcium Hydroxide as Intracanal Medicaments : An In-Vitro Microbiological Study." Journal of Ayurveda and Integrated Medical Sciences (JAIMS) 5, no. 06 (2020): 82–86. http://dx.doi.org/10.21760/jaims.5.6.10.

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Major objective of root canal treatment is disinfection of the root canal system and elimination of microbiota. Various intracanal medicaments as an adjunct to mechanical disinection and irrigation have been used but due to the harmful effects of the commercially available agents, a need for natural alternatives is felt over the time. This in-vitro study aims to evaluate the antibacterial effectiveness of natural agents Septillin and Aloe vera with Calcium hydroxide and without Calcium hydroxide on the Streptococcus mitis, E. Faecalis and Candida albicans using agar well diffusion method. The

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Purnomo, Agus, and Rodhiansyah Djayasinga. "Green synthesis of Ca(OH)2 nanoparticles from chicken eggshell waste as antibacterial agent." International Journal of Public Health Science (IJPHS) 14, no. 2 (2025): 927. https://doi.org/10.11591/ijphs.v14i2.23869.

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Chicken eggshell waste, though abundant in CaCO3 that can be converted into various products like calcium hydroxide nanoparticles (NPs), has received limited attention. This study aimed to synthesize calcium hydroxide NPs from eggshell waste and evaluate their antibacterial properties against Staphylococcus aureus and Escherichia coli. The researchers employed a top-down approach with thermal decomposition to produce environmental-friendly calcium hydroxide NPs, and conducted in vitro tests to assess their antibacterial activity, with and without exposure to sunlight. The minimum inhibitory co

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Mahdi, LM Fachry Ramadhani, Alfian Nur Prastyo, and Arya Adiningrat. "ANTIMICROBIAL EFFECTIVENESS OF CALCIUM HYDROXIDE, PROPOLIS, AND THEIR COMBINATION ON THE GROWTH OF Streptococcus mutans." Dentino: Jurnal Kedokteran Gigi 10, no. 1 (2025): 64. https://doi.org/10.20527/dentino.v10i1.22206.

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Background: Dental caries is a global oral health issue associated with the dominance of Streptococcus mutans in dental plaque. Calcium hydroxide is a commonly used dental material; however, there are increasing concerns regarding its adhesion and dissolution issues. Propolis, a natural compound with antimicrobial properties, promotes fibroblast proliferation, releases antioxidants, and reduces oxidative stress when combined with calcium hydroxide. This combination shows potential for enhancing antibacterial efficacy and pulp preservation in restorative dentistry. Purpose: This study aims to e

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Estrela, Carlos, Cyntia Rodrigues de Araújo Estrela, Augusto César Braz Hollanda, Daniel de Almeida Decurcio, and Jesus Djalma Pécora. "Influence of iodoform on antimicrobial potential of calcium hydroxide." Journal of Applied Oral Science 14, no. 1 (2006): 33–37. http://dx.doi.org/10.1590/s1678-77572006000100007.

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The purpose of this research was to verify the influence of Iodoform on antimicrobial potential of calcium hydroxide. S. aureus, E. faecalis, P. aeruginosa, B. subtilis, C. albicans were the biological indicators. The substances tested were: calcium hydroxide + saline; calcium hydroxide + Iodoform + saline; Iodoform + saline. For the agar diffusion test, 18 Petri plates with 20 ml of BHI agar were inoculated with the microbial suspensions. Fifty-four cavities were made and filled with the substances tested. The diameters of microbial inhibition were then measured. In direct exposure test, 162

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Zhao, Yujie, Junfeng Cheng, Weiping Liu, et al. "Removal of Chloride Ions from Mg(OH)2 Using NaOH with Ethanol." Minerals 15, no. 4 (2025): 364. https://doi.org/10.3390/min15040364.

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China’s salt lake-based magnesium industry faces chloride removal challenges, which limit applications and cause pollution. Addressing this enables higher-quality Mg(OH)2 production. In this regard, chloride ion removal from magnesium hydroxide in a sodium hydroxide solution with ethanol was investigated for the first time. Ethanol and NaOH enhance chloride removal efficiency. Under optimized conditions, the chloride removal efficiency was 68.9%, and the Cl− content in Mg(OH)2 was reduced to 0.14%. Kinetic analysis suggests that the removal of chloride ions is primarily controlled by internal

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Bena, Asarizka, Agus Subiwahjudi, and Setyabudi Setyabudi. "Perbedaan Daya Antibakteri Antara Kombinasi Calcium Hydroxide-Based Sealer-Amoxicillin Dan Resin-Based Sealer-Amoxicillin Terhadap Bakteri Enterococcus Faecalis." Conservative Dentistry Journal 8, no. 1 (2019): 1. http://dx.doi.org/10.20473/cdj.v8i1.2018.1-4.

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Background. About 24-77% of root canal treatment failure cases are caused by infection of Enterococcus faecalis due to the resistance factor and virulence of these bacteria. Calcium hydroxide-based sealer and resin-based sealer are two types of sealer often used for root canal obturation due to their antibacterial properties. But the antibacterial properties owned by calcium hydroxide-based sealer has no effect on Enterococcus faecalis. Therefore, the adjunct of local antimicrobial such as amoxicillin is needed to increase antibacterial activities of root canal obturation materials (sealers) e

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Lačević, Amela, Edina Vranić, and Irfan Zulić. "Clinical application of calcium hydroxide in dental pathology and endodontics." Bosnian Journal of Basic Medical Sciences 3, no. 4 (2003): 26–29. http://dx.doi.org/10.17305/bjbms.2003.3488.

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Calcium hydroxide has a hard tissue inducing effect. It is a powder, that can be mixed with a physiological saline to a paste. The paste is highly alkaline with a pH 12.5 and its application to the pulp results in necrosis of the part of coronal pulp tissue shows no or only a milled inflammatory reaction. Analyzing the pH and the concentration of calcium ions in the periapical area, it is obvious that at least 2 weeks are necessary for calcium hydroxide bactericide activity. Calcium hydroxide retains its anti-bacterial properties for about two months when placed under a restoration, after whic

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Farnesi, Camellone. "Catalytic Proton Dynamics at the Water/solid Interface of Ceria-sup- ported Pt Clusters." Journal of the American Chemical Society 138 (June 6, 2022): 11560. https://doi.org/10.5281/zenodo.6616075.

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Wet conditions in heterogeneous catalysis can substantially improve the rate of surface reactions by assisting the diffusion of reaction intermediates between surface reaction sites. The atomistic mechanisms under- pinning this accelerated mass transfer are however con- cealed by the complexity of the dynamic water/solid in- terface. Here we employ ab initio molecular dynamics simulations to disclose the fast diffusion of protons and hydroxide species along the interface between water and ceria, a catalytically important highly-reducible oxide. Up to 20% of the interfacial water molecules are

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Aprilia, Aprilia, Belinda Kusuma, and Istien Wardani. "Antibacterial Effectiveness of Calcium Hydroxide Combined with Cresotin against Enterococcus faecalis." Archives of Orofacial Sciences 16, Supp. 1 (2021): 11–15. http://dx.doi.org/10.21315/aos2021.16.s1.3.

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The goal of endodontic treatment is to prevent and control of pulp and periradicular infections. Calcium hydroxide has a beneficial biological property as an intracanal medicament and can be combined with cresotin to disinfect bacteria in root canals, especially Enterococcus faecalis (E. faecalis) which is the most frequently isolated strain in the root canals. The aim of this study was to investigate in vitro the antimicrobial activity of calcium hydroxide, cresotin, and combination calcium hydroxide and cresotin (Ca[OH]2+Cresotin, 1:1 and 1:2) against E. faecalis. Antibacterial activity was

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Dayeh, Malak, Manal Ammar, and Mazen Al-Ghoul. "Transition from rings to spots in a precipitation reaction–diffusion system." RSC Adv. 4, no. 104 (2014): 60034–38. http://dx.doi.org/10.1039/c4ra11223g.

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We report for the first time the transition from rings to spots with squared/hexagonal symmetry in a periodic precipitation system, which consists of sulfide/hydroxide ions diffusing into a gel matrix containing dissolved cadmium(ii) ions.

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Rezende, Giovanna Pires da Silva Ribeiro de, Luciane Ribeiro de Rezende Sucasas da Costa, Fabiana Cristina Pimenta, and Daniela Abrão Baroni. "In vitro antimicrobial activity of endodontic pastes with propolis extracts and calcium hydroxide: a preliminary study." Brazilian Dental Journal 19, no. 4 (2008): 301–5. http://dx.doi.org/10.1590/s0103-64402008000400003.

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The purpose of this study was to evaluate the antimicrobial activity of two experimental pastes containing propolis extract associated with calcium hydroxide against polymicrobial cultures collected from 16 necrotic and fistulae root canals in primary molars of 4-8-year-old children of both sexes. The agar-well diffusion technique was used to determine the antimicrobial activity of the following pastes: 11.0% ethanolic extract of propolis (EEP) + calcium hydroxide; and 11.0% extract of propolis without ethanol (EP) + calcium hydroxide. EEP, EP and the association of calcium hydroxide and propy

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Kim, Young C., Brian L. Chaloux, Debra R. Rolison, Michelle D. Johannes, and Megan B. Sassin. "Molecular dynamics study of hydroxide ion diffusion in polymer electrolytes." Electrochemistry Communications 140 (July 2022): 107334. http://dx.doi.org/10.1016/j.elecom.2022.107334.

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ROBERT, G., F. LIEWEHR, T. BUXTON, and J. MCPHERSONIII. "Apical Diffusion of Calcium Hydroxide in an in vitro Model." Journal of Endodontics 31, no. 1 (2005): 57–60. http://dx.doi.org/10.1097/01.don.0000134211.85578.38.

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Motupally, Sathya, Christopher C. Streinz, and John W. Weidner. "Proton Diffusion in Nickel Hydroxide: Prediction of Active Material Utilization." Journal of The Electrochemical Society 145, no. 1 (1998): 29–34. http://dx.doi.org/10.1149/1.1838205.

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Koshel', N. D., and V. A. Kotok. "Estimation of kinetic activity of the NiOOH/Ni(OH)2 solid-state couple." Electrochemical Energetics 10, no. 2 (2010): 90–95. http://dx.doi.org/10.18500/1608-4039-2010-10-2-90-95.

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The results of protons diffusion mathematical modeling in the crystalline lattice of NiOOH/ Ni(OH)2 are caparisoned with data of experiments on thin (100 μm) porous electrodes. The criterion of nickel hydroxide activity is offered as product of proton diffusion coefficient in the crystalline lattice of NiOOH on the square of specific surface area. It was founded existence of protons migration mechanism in a crystalline lattice under action electric field.

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Arsyada, Intan Fajrin, Devi Rianti, and Elly Munadziroh. "Antibacterial activity of mixed pineapple peel (Ananas comosus) extract and calcium hydroxide paste against Enterococcus faecalis." Dental Journal (Majalah Kedokteran Gigi) 51, no. 1 (2018): 20. http://dx.doi.org/10.20473/j.djmkg.v51.i1.p20-24.

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Background: Enterococcus faecalis (E. faecalis) is the bacteria most commonly resulting from failed root canal treatment. Intracanal medicament is used to enhance the success of root canal treatment. A material widely used for this purpose is calcium hydroxide. However, its ineffectiveness in eliminating E. faecalis requires the addition of other antibacterial substances, such as iodoform which has the disadvantage of having toxic effects on tissues. Pineapple peel has antibacterial properties because it contains chemical compounds, such as flavonoid, saponin, tannin, as well as the enzyme bro

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El Sayed, Mohamed, Nikta Ghanerad, Zeinab Shabanpour, Mahin Shabanpoor, and Fatemeh Rahimi. "Comparing the Antifungal Effect of Sodium Hypochlorite Gel versus Different Types of Root Canal Medicaments at Different Time Intervals Using the Agar Diffusion Test: An In Vitro Study." International Journal of Dentistry 2021 (December 13, 2021): 1–10. http://dx.doi.org/10.1155/2021/6550054.

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Aims. The purpose of this study was to compare the antifungal activity of sodium hypochlorite gel to those of four intracanal medicaments at various time intervals. Materials and Methods. The agar well diffusion technique was utilized to test the antifungal activity of the following medicaments against Candida albinans (C. albicans): sodium hypochlorite gel, chlorhexidine gel, calcium hydroxide paste, Ledermix, and Diapex Plus. The inhibition zone related to each medicine was measured in millimeter after 24, 48, and 72 hours of incubation at 37°C. The data were analyzed using one-way ANOVA and

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Santos, Diogo M. F., and César A. C. Sequeira. "Chronoamperometric Determination of Diffusion Coefficients for Borohydride Anions in Sodium Hydroxide Solutions." Defect and Diffusion Forum 273-276 (February 2008): 583–89. http://dx.doi.org/10.4028/www.scientific.net/ddf.273-276.583.

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Chronoamperometry is carried out with a Au disc electrode in alkaline sodium borohydride solutions of varying concentrations and temperatures. By selecting conditions for which the borohydride oxidation is controlled by diffusion, it was possible to deduce diffusion coefficients and activation energies for borohydride concentrations ranging from 0.03 M to 0.12 M, and temperatures ranging from 25 to 65 °C. The estimated parameters were compared with other values reported in the open literature.

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Sapna, Hegde, Lala Priti Kamlesh, B. Dinesh Rao, and AB Shubha. "An in vitro Evaluation of Antimicrobial Efficacy of Primary Root Canal Filling Materials." Journal of Clinical Pediatric Dentistry 37, no. 1 (2012): 59–64. http://dx.doi.org/10.17796/jcpd.37.1.v6305588xw525505.

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Objective: The present study aimed to evaluate and compare six different materials commonly used for filling the root canals of primary teeth for antimicrobial efficacy against some of the microorganisms commonly found in infected root canals. Study design: In this experimental in vitro study six root canal filling materials were tested for antimicrobial efficacy against eight microbial strains using the agar diffusion method. Results: Zinc oxide eugenol paste exhibited the strongest antimicrobial potential followed by Endoflas™, zinc oxide-calcium hydroxide-sodium fluoride mixture, zinc oxide

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