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Journal articles on the topic 'Calcium Aluminium Silicate'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

L’Hôpital, E., B. Lothenbach, G. Le Saout, D. Kulik, and K. Scrivener. "Incorporation of aluminium in calcium-silicate-hydrates." Cement and Concrete Research 75 (September 2015): 91–103. http://dx.doi.org/10.1016/j.cemconres.2015.04.007.

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2

Ponnada, Naveena, Praveen D, Girija S. Sajjan, P. N. V. Manohar, B V Sindhuja, and K. Meghana Varma. "Biomaterials in endodontics: a review." International Journal of Dental Materials 05, no. 02 (2023): 43–51. http://dx.doi.org/10.37983/ijdm.2023.5204.

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Biomaterials have evolved over the past three decades and are relatively specialized, highly biocompatible, but low-strength dental materials. Bioactive materials can interact with living tissues or systems. The newly emerging bioactive category of dental materials has expanded clinical uses in restorative dentistry and endodontics. Examples of bioactive materials are Calcium Silicate containing Mineral Trioxide Aggregate (Portland cement); Calcium Silicate cements lacking aluminium and containing phosphate: Bioagrregate, iRoot SP and iRoot BP (Endosequence), Calcium Silicate cements containin

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3

Elisa, A. A., S. Ninomiya, J. Shamshuddin, and I. Roslan. "Alleviating aluminium toxicity on an acid sulphate soils in Peninsular Malaysia with application of calcium silicate." Solid Earth Discussions 7, no. 4 (2015): 2903–26. http://dx.doi.org/10.5194/sed-7-2903-2015.

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Abstract. A study was conducted to alleviate Al toxicity of an acid sulphate soils collected from paddy cultivation area in Kedah, Peninsular Malaysia. For this purpose, the collected acid sulphate soils were treated with calcium silicate. The treated soils were incubated for 120 days in submerged condition in a glasshouse. Subsamples were collected every 30 days throughout the incubation period. Soil pH and exchangeable Al showed positive effect; soil pH increased from 2.9 to 3.5, meanwhile exchangeable Al was reduced from 4.26 to 0.82 cmolc kg−1, which was well below the critical Al toxicity

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4

Pegado, Luís, Christophe Labbez, and Sergey V. Churakov. "Mechanism of aluminium incorporation into C–S–H from ab initio calculations." J. Mater. Chem. A 2, no. 10 (2014): 3477–83. http://dx.doi.org/10.1039/c3ta14597b.

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5

L’Hôpital, E., B. Lothenbach, D. A. Kulik, and K. Scrivener. "Influence of calcium to silica ratio on aluminium uptake in calcium silicate hydrate." Cement and Concrete Research 85 (July 2016): 111–21. http://dx.doi.org/10.1016/j.cemconres.2016.01.014.

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6

Ribera-Fonseca, Alejandra, Cornelia Rumpel, María de la Luz Mora, Miroslav Nikolic, and Paula Cartes. "Sodium silicate and calcium silicate differentially affect silicon and aluminium uptake, antioxidant performance and phenolics metabolism of ryegrass in an acid Andisol." Crop and Pasture Science 69, no. 2 (2018): 205. http://dx.doi.org/10.1071/cp17202.

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Evidence indicates that silicon (Si) alleviates diverse stresses by improving the antioxidant capacity and phenolics metabolism of plants. We assessed the effect of sodium silicate (Na2SiO3) and calcium silicate (CaSiO3) on Si and aluminium (Al) uptake, antioxidant performance and phenolics (with antioxidant or structural function) of ryegrass cultivated on an acid Andisol under greenhouse conditions. Ryegrass was treated with either sodium silicate or calcium silicate at gradually increasing doses (250, 500 and 1000 mg Si kg–1 soil). Yield and concentrations of Si and Al were measured in root

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7

Domka, Ludwik, Andrzej Krysztafkiewicz, and Maciej Kozak. "Silane Modified Fillers for Reinforcing Polymers." Polymers and Polymer Composites 10, no. 7 (2002): 541–52. http://dx.doi.org/10.1177/096739110201000706.

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Some white natural fillers (kaolin and talc) and synthetic mineral ones (precipitated silica, sodium-aluminium silicate, zinc silicate, calcium silicate) together with waste materials (cement dusts and post-fluor silicas) were subjected to surface modification and characterised. Various types of silane coupling agents (amino-, mercapto-, methacryloxy- and ureidosilanes) were used for surface modification. The modified fillers were mixed with butadiene-styrene rubber, polyurethane and PVC. Good physico-mechanical properties were obtained for PVC containing talcs and kaolins modified with methac

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8

Zhong, Ming Feng, Da Gen Su, and Yi Xiang Zhao. "Hydration Activity of Ceramic Polishing Powder at Autoclaved Condition." Advanced Materials Research 568 (September 2012): 392–95. http://dx.doi.org/10.4028/www.scientific.net/amr.568.392.

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Hydration activity of waste ceramic polishing powder at autocalved condition were studied by IR, XRD, SEM and EDS in civil engineering. The results shown that autoclaved condition is beneficial to inspire hydration ability of polishing powder, the more active silicon and aluminium were dissolved, and they were converted into low Ca/Si ratio calcium silicate hydrate, whose ratio of Ca/Si was 1.58, and the compressive strength of autoclaved silicate product made by the ceramic polishing powder was higher than that of fly ash.

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9

Redondo-Soto, Cinthya, Daniela Gastaldi, Sara Irico, Fulvio Canonico, and Miguel A. G. Aranda. "Belite clinkers with increasing aluminium content: Effect of calcium aluminates on calcium silicate hydration." Cement and Concrete Research 162 (December 2022): 107015. http://dx.doi.org/10.1016/j.cemconres.2022.107015.

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10

Tiwari, Geetanjali, Nameeta Brahme, Ravi Sharma, D. P. Bisen, Sanjay K. Sao, and Shalinta Tigga. "Luminescence properties of dysprosium doped di-calcium di-aluminium silicate phosphors." Optical Materials 58 (August 2016): 234–42. http://dx.doi.org/10.1016/j.optmat.2016.05.033.

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11

Demirkaya, K., B. Can Demirdöğen, Z. Öncel Torun, O. Erdem, E. Çırak, and YM Tunca. "Brain aluminium accumulation and oxidative stress in the presence of calcium silicate dental cements." Human & Experimental Toxicology 36, no. 10 (2016): 1071–80. http://dx.doi.org/10.1177/0960327116679713.

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Mineral trioxide aggregate (MTA) is a calcium silicate dental cement used for various applications in dentistry. This study was undertaken to test whether the presence of three commercial brands of calcium silicate dental cements in the dental extraction socket of rats would affect the brain aluminium (Al) levels and oxidative stress parameters. Right upper incisor was extracted and polyethylene tubes filled with MTA Angelus, MTA Fillapex or Theracal LC, or left empty for the control group, were inserted into the extraction socket. Rats were killed 7, 30 or 60 days after operation. Brain tissu

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12

Hemra, Khanthima, Takaomi Kobayashi, Pavadee Aungkavattana, and Sirithan Jiemsirilers. "Enhanced mechanical and thermal properties of fly ash-based geopolymer composites by wollastonite reinforcement." Journal of Metals, Materials and Minerals 31, no. 4 (2021): 13–25. http://dx.doi.org/10.55713/jmmm.v31i4.1230.

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The present study investigated the mechanical and thermal properties of geopolymer composite. The geopolymer composite was prepared by mixing fly ash and wollastonite with the alkaline activator, which was 6 M KOH:K2SiO3 in a mass ratio of 1:1 and a solid:liquid mass ratio of 3:2. The compressive strength at 28 days of geopolymer was 33.3 MPa and possessed the highest strength of 38.3 MPa when 30 wt% wollastonite was added. The flexural strength presented differently whereby it increased from 2.1 MPa to 6.8 MPa. It increased remarkably up to 200% with the addition of 50 wt% wollastonite. The g

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13

O., P. Shrivastava, and Shrivastava Rashmi. "Study on selective sorption of 137Cs on Al-substituted calcium silicate hydroxy hydrate." Journal of Indian Chemical Society Vol. 78, Aug 2001 (2001): 392–94. https://doi.org/10.5281/zenodo.5878125.

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Department of Chemistry, Dr. H. S. Gour University, Sagar-470 003, India <em>Manuscript received 16 February 2000, revised 23 November 2000, accepted 24 February 2001</em> Sorption properties have been investigated by radiometric (tracer) technique at room temperature for aluminium substituted calcium silicate hydroxy hydrate, known as tobermorite. The <sup>137</sup>Cs selectivity has been examined in presence of 1000 times concentrated solution of Na<sup>+</sup> , Ca<sup>2+ </sup>and Ba<sup>2+</sup>. The results suggest that the title phase could be used for immobilization of radioactive

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14

Ramin Hosseini Kupaei, U.Johnson Alengaram, and Mohd Zamin Bin Jumaat. "A Review on Fly Ash-Based Geopolymer Concrete." Electronic Journal of Structural Engineering 13, no. 2 (2013): 1–6. http://dx.doi.org/10.56748/ejse.131652.

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Ordinary Portland cement (OPC) is conventionally used as the primary binder to produce concrete. The environmental issues associated with the production of OPC are well known. Binders could be produced by a polymeric reaction of alkaline liquids with the silicon and the aluminium in source materials of geological origin or by-product materials such as fly ash. Low-calcium fly ash-based geopolymer is used as the binder, instead of Portland or other hydraulic cement paste, to produce concrete. The manufacture of geopolymer concrete is carried out using the usual concrete technology methods. As i

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15

Myers, Rupert J., Emilie L'Hôpital, John L. Provis, and Barbara Lothenbach. "Effect of temperature and aluminium on calcium (alumino)silicate hydrate chemistry under equilibrium conditions." Cement and Concrete Research 68 (February 2015): 83–93. http://dx.doi.org/10.1016/j.cemconres.2014.10.015.

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16

Wongkeo, Watcharapong. "Effect of Calcium Carbonate on Compressive Strength and Physical Properties of Alkali-Activated Lightweight Concrete." Key Engineering Materials 751 (August 2017): 550–55. http://dx.doi.org/10.4028/www.scientific.net/kem.751.550.

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This study presents the compressive strength and physical properties of alkali-activated lightweight concrete. Alkali-activated lightweight concrete was synthesized with fly ash, calcium carbonate and sodium hydroxide solution. Calcium carbonate was designed to replace part of fly ash at 5 and 10 wt.%. Sodium hydroxide solution at 5, 7.5 and 10 M was used as a liquid solution. Liquid to ash ratio (L/A ratio) at 0.45 was designed and aluminium powder was used as a foaming agent. The results showed that, the compressive strength of alkali-activated lightweight concrete made with fly ash was incr

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17

Shao, Shuai, Charles T. Driscoll, Chris E. Johnson, Timothy J. Fahey, John J. Battles, and Joel D. Blum. "Long-term responses in soil solution and stream-water chemistry at Hubbard Brook after experimental addition of wollastonite." Environmental Chemistry 13, no. 3 (2016): 528. http://dx.doi.org/10.1071/en15113.

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Environmental context Calcium silicate was added to a forest watershed in New Hampshire, USA, to accelerate its recovery from acid rain. The acid–base status of soil and stream quality improved over the 12-year study, with the most pronounced response in the upper elevation and the upper soil of the watershed. A total of 95% of the added calcium and 87% of the added silica were retained in the watershed over the study period. Abstract In October 1999, 3450kgha–1 of wollastonite (CaSiO3) was applied to Watershed 1 at the Hubbard Brook Experimental Forest in New Hampshire, USA, with the objectiv

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18

Caliskan, Secil, Nuray Tuloglu, and Sule Bayrak. "Clinical applications of BioAggregate in pediatric dentistry: Case reports." Srpski arhiv za celokupno lekarstvo 147, no. 11-12 (2019): 746–50. http://dx.doi.org/10.2298/sarh190509124c.

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Introduction. Calcium-silicate-based, nanoparticle-sized BioAggregate is produced as an alternative version of mineral trioxide aggregate (MTA). It contains additives such as calcium phosphate and silicon dioxide but does not contain aluminium oxide and bismuth oxide. Studies have shown that BioAggregate?s calcium-ion release is better than these qualities in MTA concerning fracture and acid resistance, biocompatibility and sealing ability. Case outline. In this paper, we examine eight case reports. These reports describe the long-term results of using BioAggregate in areas such as pulpotomy a

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19

Wurie, Nadia N., Junjie Zheng, and Abdoul Fatah Traore. "Mechanical, Leaching, and Microstructure Properties of Mine Waste Rock Reinforced and Stabilised with Waste Oyster Shell for Road Subgrade Use." Materials 15, no. 8 (2022): 2916. http://dx.doi.org/10.3390/ma15082916.

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Two waste materials, oyster shell (NCOS; non-calcined oyster shell as coarse aggregate and COSP; calcined oyster shell powder as total and partial cement replacement) are used to reinforce and stabilise poorly graded and heavy metal-contaminated mine waste rock (MWR) for pavement subgrade use. Mechanical, leaching, and microstructural tests and analysis were performed on reinforced and stabilised samples to evaluate the effectiveness of the reinforcement and stabilisation of the MWR. Experimental results revealed NCOS and COSP improved the mechanical, leaching, and microstructural properties o

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20

Abu Zeid, Sawsan T., Najlaa M. Alamoudi, Monazah G. Khafagi, and Ensanya A. Abou Neel. "Chemistry and Bioactivity of NeoMTA Plus™ versus MTA Angelus® Root Repair Materials." Journal of Spectroscopy 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/8736428.

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Objectives. To analyse the chemistry and bioactivity of NeoMTA Plus in comparison with the conventional root repair materials. Method and Materials. Unhydrated and hydrated (initial and final sets) materials were analysed by Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD). For bioactivity study, small holes of dentin discs were filled with either materials, immersed in PBS for 15 days, and analysed with FTIR and scanning electron microscope with energy dispersive X-ray (SEM/EDX). The calculation of crystallinity and carbonate/phosphate (CO3/PO4) ratio of surface prec

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21

Liu, Hao, Ke Zhang, Qingfeng Ling, and Yuelin Qin. "Effect of B2O3 Content on the Sintering Basic Characteristics of Mixed Ore Powder of Vanadium-Titanium Magnetite and Hematite." Journal of Chemistry 2020 (June 1, 2020): 1–9. http://dx.doi.org/10.1155/2020/6279176.

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The sintering basic characteristics of iron ore play a key role in the process of sintering. In this study, the effects of B2O3 on the assimilation characteristics, softening temperature, fluidity of liquid phase, compressive strength of bonding phase, and microstructure of the mixed fine powder of hematite and vanadium-titanium magnetite (H-VTM) are studied. Results show that B2O3 content from 0%–5% (wt%) could improve the assimilation characteristics of the H-VTM and increase the amount of the liquid phase. The liquidity of the bonding phase index (LBPI) of the H-VTM increases from 3.7 to 24

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22

Oluwaseun, Mohammed Ganiyu, and Irheren Dada. "Reliability of Soil and Ground Improvement Techniques in Niger Delta Region of Nigeria." Saudi Journal of Civil Engineering 7, no. 03 (2023): 83–101. http://dx.doi.org/10.36348/sjce.2023.v07i03.004.

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This research work presents a study of the reliability of ground improvement methods in three states of the Niger Delta Area of Nigeria namely: Rivers, Bayelsa and Akwa –Ibom states. Natural soil which is peaty clay in nature was obtained from different locations in the area of study and improved with different percentages of chemicals, cement, ranging from 2% to 10% and geotextile materials after which reliability analysis was carried out on them for CBR and UCS tests. Results show that geotextile materials are not suitable for improving the peaty clay soils in the locations under study due t

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23

Zotov, D. S., K. H. Niziaiev, O. V. Uzlov, O. V. Puchykov, and O. A. Shpak. "Reduction of the content and size of non-metallic inclusions in strip rolled low carbon steel." Fundamental and applied problems of ferrous metallurgy, no. 38 (2024): 588–601. https://doi.org/10.52150/2522-9117-2024-38-588-601.

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Reducing the number of non-metallic inclusions in finished rolled products during smelting and processing of high-quality steel is an urgent problem for all global metallurgical enterprises. Results of low carbon steel quality improvement by non-metallic inclusions cleaness parameters at Ukrainian steel plant are shown. Deoxidation of semi-product with large quantity of aluminium during tapping leads to formation of vast variety of oxide inclusions. Bigger ones coagulate and assimilate into slag. Smaller inclusions of herzenite, mulit and magnesium spinel usually stay in liquid steel. Complete

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24

Baldermann, Andre, Veronika Preissegger, Sanja Šimić, Ilse Letofsky-Papst, Florian Mittermayr, and Martin Dietzel. "Uptake of aqueous heavy metal ions (Co2+, Cu2+ and Zn2+) by calcium-aluminium-silicate-hydrate gels." Cement and Concrete Research 147 (September 2021): 106521. http://dx.doi.org/10.1016/j.cemconres.2021.106521.

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25

Baldermann, Andre, Andreas Landler, Florian Mittermayr, et al. "Removal of heavy metals (Co, Cr, and Zn) during calcium–aluminium–silicate–hydrate and trioctahedral smectite formation." Journal of Materials Science 54, no. 13 (2019): 9331–51. http://dx.doi.org/10.1007/s10853-019-03541-5.

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26

Guryanov, A. M., S. F. Korenkova, and Yu V. Sidorenko. "STRUCTURE FORMATION PROCESS OF HYDRATED PORTLAND CEMENT COMPOSITIONS: NANOSCALE LEVEL CONTROL." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 3 (June 15, 2017): 77. http://dx.doi.org/10.17770/etr2017vol3.2618.

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Durability of cement-like construction materials, as well as durability of cement stone, depends on their humidity resistance, frost resistance, corrosion resistance. All of these properties depend not only on the composition of the original clinker, but also on structural organization at micro-and nanoscale level of hydrated portland cement compositions. In this research the authors used the method of small-angle neutron scattering to define structural parameters of hydrated portland cement compositions on nanoscale level, distribution of calcium hydrate silicate nanoparticles in size, medium

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27

Zhang, Siqi, Zeping Wu, Hongyu Wang, et al. "Effect of Gold Tailing Addition on the Mechanical Properties and Microstructure of Foam Ceramics." Processes 11, no. 3 (2023): 844. http://dx.doi.org/10.3390/pr11030844.

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Tailings, with their low utilisation rate and value, pose an urgent problem that needs to be solved. This study focused on foam ceramics and glass granules, which were prepared using gold tailings as the main raw materials, and the prepared microcrystalline foam ceramics were investigated. The optimum sample (S6) of foam ceramics consists of 77 wt% of gold tailings, 6 wt% of talc, 9 wt% of bentonite, 2 wt% of calcite, 0.9 wt% of foaming agent and 0.6% of water reducer. The optimum foaming temperature is 1190 °C, and the holding time is 60 min. The compressive strength and bulk density of the s

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28

Ridzuan, Ahmad Ruslan Mohd, A. A. Khairulniza, and M. A. Fadhil. "The Evaluation of High Calcium Green Polymeric Concrete." Advanced Materials Research 626 (December 2012): 776–80. http://dx.doi.org/10.4028/www.scientific.net/amr.626.776.

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ncreasing environmental concerns of the cement industry brings about the requirement to the development of new binders. Polymeric concrete containing no cement provides great potential in reducing the global warming problems caused by CO2emissions in Portland cement production. On the other hand, large amount of waste paper sludge ash produced annually in Malaysia has caused a disposal problem as they require a proper dumping process whereby it is very costly. The study focuses on the utilization of this high calcium Waste paper sludge ash (WPSA) in polymeric concrete containing recycled concr

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29

Hassan, U. A., S. A. Yaro, M. M. Abdulwahab, and M. R. Dodo. "Effect of reagent type on the froth floatation of Sokoto phosphate ore." Metallurgical and Materials Engineering 22, no. 2 (2016): 61–72. http://dx.doi.org/10.30544/214.

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Effect of reagent type on the froth floatation of Sokoto phosphate ore for its beneficiation has been established. The samples of the Sokoto phosphate mineral ore used for the research work were sourced from mining locations in Dange-Shuni, Bodinga, Yabo, Wurno, and Rabbah Local Government Areas of Sokoto State. Size-Assay analysis conducted on scrubbed Sokoto Phosphates nodules revealed that nodules had a size distribution with 80% passing 29.3 mm. Flotation Tests using AERO704 (fatty Acid), Alkyl Hydroxamates, Melamine as collectors (alone or mixed with diesel), MIBC as frother, Calcium Hydr

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30

Hu, Ailian, Chungui Du, Yating Hua, et al. "Preparation and Flame Retardant Properties of Calcium–Aluminium Hydrotalcite with Root Cutting Silicate Layers as Bamboo Flame Retardants." Materials 14, no. 23 (2021): 7319. http://dx.doi.org/10.3390/ma14237319.

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Bamboo has been widely used in architecture, decoration and other fields because of its advantages of short growth period, high strength and degradability. However, bamboo, as a combustible material like wood, are easy to burn and cause building fires. However, the existing bamboo water-based flame retardants have some shortcomings, such as strong hygroscopicity and easy loss, which limits the application of bamboo products. In order to improve the flame retardant performance of bamboo, CaAl-SiO2 layered double hydroxide (LDH) as bamboo flame retardant was synthesised by coprecipitation method

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31

Guryanov, Alexander Mikhailovich, and Sergey Alexandrovich Guryanov. "Nanoscale Control of Hydrated Portland Cement Structure." Solid State Phenomena 335 (July 29, 2022): 159–65. http://dx.doi.org/10.4028/p-v80dqx.

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The durability of cement-containing building materials, like the cement stone itself, depends on their moisture resistance, frost resistance, and corrosion resistance. All these properties are determined not only by the composition of the initial clinker, but also by the structural organization at the micro-and nanoscale of hydrated Portland cement. In this work, the structural parameters of hydrated Portland cement compositions at the nanoscale level were determined by the method of small-angle neutron scattering: the size distribution of nanoparticles of calcium silicate hydrate, the average

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32

Amor, F., A. Diouri, and A. Boukhari. "Mineralogy of C-S-H belite hydrates incorporating Zn-Al-Ti layered double hydroxides." MATEC Web of Conferences 149 (2018): 01020. http://dx.doi.org/10.1051/matecconf/201814901020.

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Recently, the belitic cements with low alite content were the subject of several research works which aimed to replace the Ordinary Portland Clinker (OPC) for ecological reasons (reduction of CO2 emissions), so to understand the reactivity of this cement, the hydration study of the C2S “dicalcium silicate” phase is primordial research step. As well for a clean environment, the TiO2 photocatalyst has been extensively applied in the science of building materials because of its ability to degrade the cement surface pollutants. New photocatalyst based layered double hydroxides (LDH) associated wit

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Wong, Vincent, William Jervis, Benjamin Fishburn, et al. "Long-Term Strength Evolution in Ambient-Cured Solid-Activator Geopolymer Compositions." Minerals 11, no. 2 (2021): 143. http://dx.doi.org/10.3390/min11020143.

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The major downsides of cement manufacturing are the high CO2 emissions and high energy usage. Geopolymers, which are fabricated by activation of blends of fly ash (FA) and ground granulated blast furnace slag (GGBFS) using an alkaline activator, offer a promising solution to this issue. However, to enhance the replacement of cement in construction applications, geopolymer compositions have to be designed such that they can be activated on site by just adding water, similar to how cements are used. Therefore, the present work uses solid sodium metasilicate (MS, Na2SiO3) as the alkaline activato

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34

Kenyon, N. J., and M. T. Weller. "The effect of calcium on phase formation in the sodium aluminium silicate carbonate system and the structure of NaCaSiO3OH." Microporous and Mesoporous Materials 59, no. 2-3 (2003): 185–94. http://dx.doi.org/10.1016/s1387-1811(03)00310-x.

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35

Baqer, Yousef, Keith Bateman, Vanessa M. S. Tan, Douglas I. Stewart, Xiaohui Chen, and Steven F. Thornton. "The Influence of Hyper-Alkaline Leachate on a Generic Host Rock Composition for a Nuclear Waste Repository: Experimental Assessment and Modelling of Novel Variable Porosity and Surface Area." Transport in Porous Media 140, no. 2 (2021): 559–80. http://dx.doi.org/10.1007/s11242-021-01702-2.

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Abstract Deep geological disposal is the preferred solution for long-term storage of radioactive waste in many countries. In a deep repository, cementitious materials are widely used in the structure and buffer/backfill of the repository for the stabilisation of the hazardous materials. The cement acts as a physical barrier and also contributes chemically to waste containment by buffering the groundwater to a high pH, limiting the solubility of many radionuclides. This paper describes an experimental and modelling study which evaluates the geochemical interaction between young cement leachate

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36

Ali, Samer K., and Eman B. H. Al-Khedairy. "Solubility and Dissolution Enhancement of Atorvastatin Calcium using Solid Dispersion Adsorbate Technique." Iraqi Journal of Pharmaceutical Sciences ( P-ISSN: 1683 - 3597 , E-ISSN : 2521 - 3512) 28, no. 2 (2019): 105–14. http://dx.doi.org/10.31351/vol28iss2pp105-114.

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Atorvastatin (ATR) is poorly soluble anti-hyperlipidemic drug; it belongs to the class II group according to the biopharmaceutical classification system (BCS) with low bioavailability due to its low solubility. Solid dispersions adsorbate is an effective technique for enhancing the solubility and dissolution of poorly soluble drugs. The present study aims to enhance the solubility and dissolution rate of ATR using solid dispersion adsorption technique in comparison with ordinary solid dispersion. polyethylene glycol 4000 (PEG 4000), polyethylene glycol 6000 (PEG 6000), Poloxamer188 and P

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37

Mulvaney, R. "Iron ore sinter in the analytical transmission electron microscope." Mineralogical Magazine 51, no. 359 (1987): 61–69. http://dx.doi.org/10.1180/minmag.1987.051.359.06.

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AbstractIron ore sinters prepared for the blast furnaces at Scunthorpe, Humberside, comprise iron oxides bound in a matrix of aluminium- and silicon-rich calcium ferrites with some calcium orthosilicate and a residual silicate glass. A super-silicon-deficient clinopyroxene with up to half of the Si in the chain replaced by Fe3+ and Al3+ precipitates from the glass in some areas. The iron oxides are principally magnetite and hematite with some wüstite in highly reduced areas. The calcium orthosilicate has been previously reported as the mineral larnite, β-Ca2SiO4. This study found a range of Fe

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A.K., Mandal, and Sinha O.P. "Characterization of Fluxed Iron Ore Pellets as Compared to Feed Material for Blast Furnace." Journal of Progressive Research in Chemistry 2, no. 1 (2015): 74–82. https://doi.org/10.5281/zenodo.3970050.

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The effect of lime addition in hematite iron ore pellets on its physico-chemical as well as mechanical properties with respect to blast furnace requirement was studied in a laboratory scale with varying basicity i.e. 0-2.0.Increasing addition lime produced more calcium-alumino-silicate phases (slag) as evidenced by SEMEDAX analysis. These phases have low melting points which enhances sticking behaviourof pellets, as well as imparting strength to the pellets (resulting increasing compressive strength, tumbler, abrasion and shatter index) and decreasing the porosity. The low basicity pellets wer

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Demirkaya, Kadriye, Birsen Can Demirdöğen, Zeynep Öncel Torun, Onur Erdem, Serdar Çetinkaya, and Cemal Akay. "In vivo evaluation of the effects of hydraulic calcium silicate dental cements on plasma and liver aluminium levels in rats." European Journal of Oral Sciences 124, no. 1 (2015): 75–81. http://dx.doi.org/10.1111/eos.12238.

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Guerreiro-Tanomaru, Juliane Maria, Adinael Trindade-Junior, Bernardo Cesar Costa, et al. "Effect of Zirconium Oxide and Zinc Oxide Nanoparticles on Physicochemical Properties and Antibiofilm Activity of a Calcium Silicate-Based Material." Scientific World Journal 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/975213.

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The aim of the present study was to evaluate the antibiofilm activity againstEnterococcus faecalis, compressive strength. and radiopacity of Portland cement (PC) added to zirconium oxide (ZrO2), as radiopacifier, with or without nanoparticulated zinc oxide (ZnO). The following experimental materials were evaluated: PC, PC + ZrO2, PC + ZrO2+ ZnO (5%), and PC + ZrO2+ ZnO (10%). Antibiofilm activity was analyzed by using direct contact test (DCT) onEnterococcus faecalisbiofilm, for 5 h or 15 h. The analysis was conducted by using the number of colony-forming units (CFU/mL). The compressive streng

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Tzankova, Nikoleta, and Dobrinka Stavrakeva. "Mineralogical study of archaeological copper slags found in the area of Krushevets Village, SE Bulgaria." Geologica Balcanica 49, no. 2 (2020): 3–23. http://dx.doi.org/10.52321/geolbalc.49.2.3.

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In this article, we present the results of our study on archaeological slags found near the village of Krushevets, Southeast Bulgaria. Chemical analyses of the slags show a high Fe2O3 (40.11–54.57%) and SiO2 (29.32–42.28%) content, increased CaO content (3.01–6.51%), as well as very low quantity of SO3 (from 0.20% to 0.52%) and P2O5 (between 0.23% and 0.30%). The unbound residual copper in the samples is in an amount of 0.41% to 1.07%. The main phases composition of the slags are as follows: fayalite-type silicate phases with impurities, kirschsteinite and laihunite; pyroxenes of the augite-ty

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Basavaraj, Jeevitha, and Gowthami U. Kumar. "A Comprehensive Review on Red Mud-based Geo-polymerase a Sustainable Material." Journal of Recent Activities in Architectural Sciences 9, no. 1 (2024): 18–23. http://dx.doi.org/10.46610/joraas.2024.v09i01.003.

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Effective waste management is crucial; every waste component can be systematically controlled to minimize its creation. The development of geo-polymer concrete offers a pathway towards achieving this objective. Methods: Geo-polymers are inorganic materials that result from the alkali activation of aluminosilicates. The alumino-silicates are sourced from naturally occurring materials and industrial waste such as fly ash, blast furnace slag, and rice husk ash. Red mud, a by-product from an alumina refining industry practically rich in alumina content, can be used as a geo-polymer material along

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Paul, Nandita, and Karab Ali. "THE ROLE OF DANTADHAVANA (TOOTH BRUSHING) TO PROMOTE ORAL HEALTH." International Ayurvedic Medical Journal 11, no. 8 (2023): 1989–94. http://dx.doi.org/10.46607/iamj2911082023.

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Ayurveda is the science of life. The knowledge of Ayurveda originated in India more than 5000 years ago. Ayurveda is considered to be a part of Atharva Veda. The goal of Ayurveda is to maintain health and cure diseases. To maintain positive health in healthy individual. Ayurveda has mentioned Dinacharya, it is one of the most important things in our daily life. It means ``The Daily Routine’ one should follow the Dinacharya properly to lead a healthy and disease-free life. Acharya Charaka, Sushruta and Vagbhatta have a separate chapter for Dantadhavana, it is the most important part of our dail

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Laukaitis, Antanas, and Aleksandr Dudik. "A WATER-REPELLING INVESTIGATION OF 300–450 KG/M3 DENSITY POROUS SILICATE CONCRETE." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 2, no. 7 (1996): 33–40. http://dx.doi.org/10.3846/13921525.1996.10531653.

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This paper deals with porous silicate convert voluminous water—repellence treatment technological parameters and properties using bitumen emulsions. Bitumen emulsions were prepared using laboratory equipment made up of two electrically heated tanks for bitumen and emulsifier. The melted bitumen solution was added at an even rate to a mixer (3000 rpm). The bitumen emulsion temperature was 80–85 °C. The emulsifying agent used for rapidly decomposing emulsions (decomposition up to 5 min) was sulphate soap and naphthenate soap EGIK-3, for medially decomposition after 5-10 min)—crude residue from p

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Wei, Zhi-Yuan, Guo-Hui Meng, Lin Chen, et al. "Progress in ceramic materials and structure design toward advanced thermal barrier coatings." Journal of Advanced Ceramics 11, no. 7 (2022): 985–1068. http://dx.doi.org/10.1007/s40145-022-0581-7.

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AbstractThermal barrier coatings (TBCs) can effectively protect the alloy substrate of hot components in aeroengines or land-based gas turbines by the thermal insulation and corrosion/erosion resistance of the ceramic top coat. However, the continuous pursuit of a higher operating temperature leads to degradation, delamination, and premature failure of the top coat. Both new ceramic materials and new coating structures must be developed to meet the demand for future advanced TBC systems. In this paper, the latest progress of some new ceramic materials is first reviewed. Then, a comprehensive s

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Wooden, D. H., H. A. Ishii, and M. E. Zolensky. "Cometary dust: the diversity of primitive refractory grains." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 375, no. 2097 (2017): 20160260. http://dx.doi.org/10.1098/rsta.2016.0260.

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Comet dust is primitive and shows significant diversity. Our knowledge of the properties of primitive cometary particles has expanded significantly through microscale investigations of cosmic dust samples (anhydrous interplanetary dust particles (IDPs), chondritic porous (CP) IDPs and UltraCarbonaceous Antarctic micrometeorites, Stardust and Rosetta ), as well as through remote sensing ( Spitzer IR spectroscopy). Comet dust are aggregate particles of materials unequilibrated at submicrometre scales. We discuss the properties and processes experienced by primitive matter in comets. Primitive pa

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Tzankova, Nikoleta, and Dobrinka Stavrakeva. "Mineralogical study of archaeological copper slags found in the area of Krushevets Village, SE Bulgaria." Geologica Balcanica 49, no. 2 (2020): 3–23. https://doi.org/10.52321/GeolBalc.49.2.3.

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In this article, we present the results of our study on archaeological slags found near the village of Krushevets, Southeast Bulgaria. Chemical analyses of the slags show a high Fe<sub>2</sub>O<sub>3</sub> (40.11–54.57%) and SiO<sub>2</sub> (29.32–42.28%) content, increased CaO content (3.01–6.51%), as well as very low quantity of SO<sub>3</sub> (from 0.20% to 0.52%) and P<sub>2</sub>O<sub>5</sub> (between 0.23% and 0.30%). The unbound residual copper in the samples is in an amount of 0.41% to 1.07%. The main phases composition of the slags are as follows:

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Kurat, G., H. Palme, F. Brandstätter, and J. Huth. "Allende Xenolith AF: Undisturbed Record of Condensation and Aggregation of Matter in the Solar Nebula." Zeitschrift für Naturforschung A 44, no. 10 (1989): 988–1004. http://dx.doi.org/10.1515/zna-1989-1011.

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Abstract Allende-AF (All-AF) is chemically similar to bulk Allende, its texture is. however, completely different. It consists mainly of highly porous silicate-rich aggregates embedded in a largely opaque matrix. Occasionally olivine-sulfide-metal aggregates and large sulfide-andradite objects are found. Chondrules are absent and grain size in matrix and aggregates is the same, quite different from normal Allende.The main mineral in All-AF is olivine (22-41 wt% FeO). low Ca-pyroxene is absent, but a variety of clinopyroxenes were encountered. Rare phases found throughout All-AF are refractory

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Deraman, Laila Mardiah, Mohd Mustafa Al Bakri Abdullah, Liew Yun Ming, Kamarudin Hussin, and Zarina Yahya. "A Review on Processing and Properties of Bottom Ash Based Geopolymer Materials." Key Engineering Materials 660 (August 2015): 3–8. http://dx.doi.org/10.4028/www.scientific.net/kem.660.3.

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Geopolymerization are chemical reaction between raw material and alkaline activator where a rapid change of some partial armorphous, specific structure into a compact cemented framework. It was treated with an alkali silicate solution at 45 – 80 °C whereas it’s formed from reaction of mineral clays or aluminosilicate-bearing industrial waste. The previous study about geopolymer has been done for many years due to the physical and chemical properties which is suitable to use in the construction industry. A Geopolymer material that was containing most Silica (Si) and Aluminium (Al) is such as fl

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Sebayang, N. U. W., B. Hidayat, Jamilah, and S. P. Sari. "Characteristics of marine organic waste compost using Brunauer-Emmet-Teller, Fourier Transform Infrared, and Scanning Electron Microscope-Energy Dispersive X-Ray." IOP Conference Series: Earth and Environmental Science 1287, no. 1 (2023): 012032. http://dx.doi.org/10.1088/1755-1315/1287/1/012032.

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Abstract On the basis of their composition, organic waste and inorganic waste may be differentiated from marine debris. Microorganisms have the ability to break down organic waste, hence marine organic waste can be bio-converted into compost. The goal of analyzing the properties of compost from marine organic waste was to characterize the organic components with FTIR, identify the surface area, pore diameter, and total pore volume of the compost, and evaluate the microstructure with SEM. The result with BET that marine organic waste compost has a surface area of 22.690 m2/g that has the potent

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