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Artykuły w czasopismach na temat „Silica Flour”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Yikarebogha, Y., K. C. Igwilo, N. Uwaezuoke, J. U. Obibuike, and K. K. Ihekoronye. "Performance Evaluation of Periwinkle Shell Powder as Alternative to Silica Flour in High Temperature Well Cementing Operation." International Journal of Engineering and Advanced Technology Studies 13, no. 1 (2025): 44–56. https://doi.org/10.37745/ijeats.13/vol13n14456.

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The effect of high temperature on cement slurry is a problem in the oil and gas drilling industry. Over the years, silica flour was used to prevent the strength of cement that results from high temperature effect. But the silica flour is imported and not environmentally friendly. Hence, the need for local material that can serve as alternative becomes imperative. Periwinkle shell (Tympanostomus fuscatus) was tested in the laboratory to determine its potential use in place of the synthetic silica flour. The shell was pulverised, calcinated, and subjected to laboratory test following the require

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Wang, Junjie, and Engui Liu. "Physicomechanical Properties of Gypsum with Mineral Additions at Elevated Temperatures." Coatings 13, no. 12 (2023): 2091. http://dx.doi.org/10.3390/coatings13122091.

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Gypsum, from either nature or industrial by-products, can be a lower-cost and cleaner alternative binder to Portland cement used in construction projects, such as affordable housing in developing countries. Although various building products have successfully used gypsum as the binder, some drawbacks of this material have still been claimed, for example, in the aspects of mechanical strength and some other physical properties. Using mineral additions to gypsum seems to be a possible solution to create composite gypsum with improved properties. This work has investigated the possibility of two

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Bezerra, U. T., A. E. Martinelli, D. M. A. Melo, M. A. F. Melo, and V. G. Oliveira. "The strength retrogression of special class Portland oilwell cement." Cerâmica 57, no. 342 (2011): 150–54. http://dx.doi.org/10.1590/s0366-69132011000200004.

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Temperatures in excess of 110 ºC result in phase transformations of cement, significantly decreasing its compressive strength. This effect is referred to as strength retrogression. It is frequently observed in cement sheaths of heavy oil wells submitted to steam injection. The present study evaluated the mechanical behavior of Special Class Portland Oilwell Cement (SCPOC) slurries containing silica flour to prevent retrogression. A factorial statistical planning was used to assess the effect of the main variables on the mechanical behavior of cement slurries, i.e., mechanical testing temperatu

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L.J.Bhagia, L. J. Bhagia, S. L. Dodia S.L.Dodia, and M. I. Shaikh M.I. Shaikh. "Silica Dust Exposure and Efficacy of Dust Control System in Small Silica Flour Mills, India." Global Journal For Research Analysis 3, no. 4 (2012): 28–31. http://dx.doi.org/10.15373/22778160/apr2014/83.

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Grabowski, Eliza, and J. E. Gillott. "Modification of engineering behaviour of thermal cement blends containing silica fume and silica flour by replacing flour with silica sand." Cement and Concrete Research 19, no. 4 (1989): 499–508. http://dx.doi.org/10.1016/0008-8846(89)90001-x.

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Roli, Amuah Freda, Ogbonna Joel, and Anthony John. "Effect of Silica Flour and Potasium Chloride as Additives in the Rhelogical Properties of High Temperature High Pressure Gas Well Cement Slurry." Journal of Engineering Research and Reports 25, no. 4 (2023): 66–78. http://dx.doi.org/10.9734/jerr/2023/v25i4903.

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This study explores the effects of silica flour and potassium chloride on the rheological properties of high temperature and pressure gas wells. Seven different materials were used as additives which includes: fresh water, dyckerhoff, silica flour, antifoam, extender, fluid loss, dispersant, retarder, anti-settling agent, gas control agent, dry viscosifier, potassium chloride and accelerator. Four recipes were prepared using these additives in different mixtures. Recipe four has all the additives including silica flour and potassium chloride. A series of flow tests was performed using an advan

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7

Yao, Rong, Dong Ling Peng, and Hong Yuan Huang. "Compression Test of Lining of Tunnel Fireproof Concretes." Advanced Materials Research 243-249 (May 2011): 3381–84. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.3381.

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The polypropylene, the silica flour and the carbon fiber will be considered to be added into the concrete when test, the orthogonal theory is used in this test, 32 groups samples were made, the heater was put for heating by choosing the RABT curve, the test result was analyzed, the ratio of compressive strength loss is changed with the meter of the polypropylene textile fiber, the silica flour and the carbon fiber, there is a optimality Proportion when the ratio of compressive strength loss is low.

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8

Rianna, Martha, Regina Aperita Lusiana Harahap, Novira Ananda, et al. "Experimental investigation on ceramic materials of wood flour and bentonite." Journal of Physics: Conference Series 2733, no. 1 (2024): 012016. http://dx.doi.org/10.1088/1742-6596/2733/1/012016.

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Abstract In this research, the solid-state reaction method obtained experimental investigation on wood flour and bentonite ceramic materials. The bentonite of 3 g and the wood flour of 7 g were mixed in a glass beaker and then activated at a temperature of 500°C for 2 hours. Next, the powder was ground using ball milling at 500 rpm for 30 minutes. Characterization uses XRD, SEM with mapping, and Fourier transforms infrared. Results show that the XRD confirmed having silica or SiO2 peaks in crystal structure and composition. The obtained morphological properties of the material are almost cubic

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9

Закладной, Г. А. "Grain and silica dioxide." Food processing industry, no. 5 (April 13, 2024): 48–50. http://dx.doi.org/10.52653/ppi.2024.5.5.013.

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Зерно является национальным достоянием Российской Федерации, одним из основных факторов устойчивости ее экономики, поэтому должны быть обеспечены качество и безопасность пищевых продуктов. Наибольшую безопасность представляет органическая, то есть экологически чистая продукция. Во время хранения зерно постоянно подвергается нападению насекомых и клещей – вредителей хлебных запасов. Зерно, загрязненное насекомыми при их суммарной плотности более 15 экземпляров на 1 кг, опасно для употребления в пищу. Оно ядовито. Такое зерно выходит из статуса «органическая продукция». Традиционные синтетически

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10

Manivannan, Selladurai, and Bhadriraju Subramanyam. "Contact Efficacy of Two Amorphous Silica Powders against the Red Flour Beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)." Insects 14, no. 11 (2023): 833. http://dx.doi.org/10.3390/insects14110833.

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The contact efficacy of two amorphous silica powders 1 and 2 procured from Imery’s chemicals, Lompoc, CA, USA, were evaluated against the red flour beetle, Tribolium castaneum (Herbst). The efficacy of the silica two powders was evaluated by exposing 10 adults of T. castaneum to twelve different concentrations of silica powder 1 and 2 for 12, 24, 36, and 48 h. Mortality assessments were made after 14 d, and data on adult progeny production were recorded at 42 d. Complete mortality of T. castaneum was observed when adults were exposed for 36 h to concentrations of 1.5 to 5 g/m2 of silica powder

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11

Stobnicka, Agata, and Rafał Górny. "Flour dust – aspiration fraction Documentation of proposed values of occupational exposure limits (OELs." Podstawy i Metody Oceny Środowiska Pracy 33, no. 3(93) (2017): 91–120. http://dx.doi.org/10.5604/01.3001.0010.4339.

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The term "flour dust" refers to particles derived from finely ground cereal grains and "non-cereal" grains. Flour flour usually also contains ingredients that play an important role in improving dough quality, such as enzymes, additives such as baker's yeast, flavors, spices and chemical ingredients such as preservatives. Flour is one of the basic raw materials used in the food industry and in the production of animal feed. Taking into account the nature of the production activities in mentioned industries, the highest occupational exposure to flour dust is usually observed in bakeries and gra

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12

Qader, F. A., H. N. H. Ameen, and B. M. H. Mohammed. "Effect of Food Treated with Silica Gel on Three Types of Storehouse Insects." IOP Conference Series: Earth and Environmental Science 1060, no. 1 (2022): 012098. http://dx.doi.org/10.1088/1755-1315/1060/1/012098.

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Abstract Silica gel was tested as a protective material for the seeds of cowpea, wheat and groats and mixed with five concentrations (1-5%) against the three insect species of stock and this affected their killing, the development of their first generation and the rate of loss in food weight after a month of treatment. The results showed that silica gel A generation that caused a killing rate of 100% for the southern cowpea beetle after 144 hours of treatment and for all the concentrations used, and a killing rate of 100% for the capillary beetle at a concentration of 5% and after 192 hours of

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13

Pustovgar, Andrey, Irina Ivanova, Sergey Nefedov, Aleksey Adamtsevich, and Stanislav Pashkevich. "Performance Analysis of Fine Mineral Fillers in Gypsum Plasters." Advanced Materials Research 1101 (April 2015): 373–78. http://dx.doi.org/10.4028/www.scientific.net/amr.1101.373.

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This study investigates the influence of limestone powder and silica flour used as fine mineral fillers on the main characteristics of gypsum plaster. Fine mineral fillers were added in various dosages from 2.5% to 20.0%.

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14

Pustovgar, Andrey, Andrey Zhuravlev, Sergey Nefedov, et al. "Comparison of the Effectiveness of Fine Mineral Fillers in Cement-Based Tile Adhesives." Advanced Materials Research 1004-1005 (August 2014): 1496–502. http://dx.doi.org/10.4028/www.scientific.net/amr.1004-1005.1496.

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This study investigates the influence of two fine mineral fillers on the main characteristics of tile adhesives – limestone powder and silica flour Silverbond 50. These fillers were added in various dosages: from 2.5% to 10% by weight of mixture.

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15

Trucksess, Mary W., Duwayne E. Ready, Marie K. Pender, Cathy A. Ligmond, Garnett E. Wood, and Samuel W. Page. "Determination and Survey of Deoxynivalenol in White Flour, Whole Wheat Flour, and Bran." Journal of AOAC INTERNATIONAL 79, no. 4 (1996): 883–88. http://dx.doi.org/10.1093/jaoac/79.4.883.

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Abstract A liquid chromatographic (LC) method for determining deoxynivalenol (DON) in white flour, whole wheat flour, and bran was developed. A 25 g test portion was extracted with acetonitrile-water (84 + 16), and the extract was filtered and applied to a column containing a combination of charcoal, Celite, and other adsorbents. The eluate was then chromatographed on a silica-based, reversedphase LC column by using a gradient of water and methanol. DON was measured at 220 nm. Average recoveries of DON from white flour, whole wheat flour, and bran spiked at 1 fig/g were 88,86, and 85%, respect

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16

Fen, Chiu-Shia, Yunkuen Huang, and Jiann-Long Chen. "Experimental Study of Gas Transport Parameters in Unsaturated Silica Flour." Vadose Zone Journal 8, no. 2 (2009): 373–82. http://dx.doi.org/10.2136/vzj2008.0011.

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Neenu, N., Ketaki Utpat, Unnati Desai, Magizh Samuel, Rahul Bagul, and Hem Shah. "Silicosis-Allergic Bronchopulmonary Aspergillosis Overlap—A Rare Duet!" Indian Journal of Occupational and Environmental Medicine 28, no. 1 (2024): 86–89. http://dx.doi.org/10.4103/ijoem.ijoem_170_23.

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Abstract Silicosis is a progressive pneumoconiosis caused by inhalation of crystalline silica dust commonly seen in workers of construction sites, flour mills, and mining. Allergic bronchopulmonary aspergillosis (ABPA) is a hypersensitivity reaction to Aspergillus fumigatus antigens commonly encountered in patients with asthma and cystic fibrosis. We report a case of 60-year-old flour mill worker presented with clinico-radiological features of silicosis; further evaluation was found to have an overlap of ABPA in view of severe atopic symptoms. We describe a rare duet of silicosis with ABPA ove

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18

Kim, Min-Jae, Booki Chun, Hong-Joon Choi, Wonsik Shin, and Doo-Yeol Yoo. "Effects of Supplementary Cementitious Materials and Curing Condition on Mechanical Properties of Ultra-High-Performance, Strain-Hardening Cementitious Composites." Applied Sciences 11, no. 5 (2021): 2394. http://dx.doi.org/10.3390/app11052394.

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This study investigated the influence of ordinary Portland cement (OPC) and reactive and non-reactive mineral additives on the characteristic microstructure and mechanical performance of ultra-high-performance, strain-hardening cementitious composites (UHP–SHCCs). Nine mixes of cementitious composites were considered composed of reactive and non-reactive materials, such as ground granulated blast furnace slag (GGBS), silica fume (SF), cement kiln dust (CKD), and silica flour. Compressive strength and direct tensile tests were performed on the nine mixes cured for 7 d and 28 d. The test result

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19

Zhong, Li, Tiejun Shi, and Liying Guo. "Preparation and morphology of porous SiO2 ceramics derived from fir flour templates." Journal of the Serbian Chemical Society 75, no. 3 (2010): 385–94. http://dx.doi.org/10.2298/jsc090410010z.

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The preparation of SiO2 ceramics with controllable porous structure from fir flour templates via sol-gel processing was investigated. The specific size the fir flour, which was treated with 20 % NaOH solution, was infiltrated with a low viscous silica sol and subsequently calcined in air, which resulted in the formation of highly porous SiO2 ceramics. X-Ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FESEM) were employed to investigate the microstructure and phase formation during processing as well as of the SiO2 ceramics.

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20

Houot, Marie, Julie Homère, Hélène Goulard, et al. "O5D.3 Methods of estimating lifetime occupational exposure in the general population, based on job-exposure matrices." Occupational and Environmental Medicine 76, Suppl 1 (2019): A48.1—A48. http://dx.doi.org/10.1136/oem-2019-epi.129.

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ObjectivesTo estimate proportion of pathologies attributable to occupational exposure, lifetime occupational exposure prevalence (LOEP) and relative risk are necessary. LOEP estimates are commonly used but often estimated with different methods. The method choice and the impact on estimates are rarely discuss in the literature. This study present and discuss the most widely used means of estimating LOEP and their respective impacts on estimates.MethodsA sample of individuals representative of the French population from 2007 was linked with four Matgéné job-exposure matrices: flour dust, cement

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Lavrov, I. Yu, and V. A. Beregovoy. "High-performance concrete for industrial construction and mechanical engineering." Construction Materials, no. 12 (December 15, 2024): 42–48. https://doi.org/10.31659/0585-430x-2024-831-12-42-48.

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The multicomponent composition of the raw material mixture and the heterogeneity of the structure of highly functional concretes at various scale levels make it possible to effectively control the formation of indicators of its damping properties due to prescription and technological factors. Experimental compositions included Portland cement, quartz sand, granite screening, silica, metacaolin, quartz flour, microcalcite, shrinkage compensators, hyperplasticizer and reinforcing microfiber. The hydrodynamic properties were investigated by methods of free and forced oscillations.Experimental com

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22

Žlebek, Tomáš, Jakub Hodul, and Rostislav Drochytka. "Use of Specially Treated Hazardous Waste as Filler in Polymer Coatings." Key Engineering Materials 898 (August 27, 2021): 49–55. http://dx.doi.org/10.4028/www.scientific.net/kem.898.49.

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The objective of presented research was to verify and evaluate whether the treated hazardous waste (HW) can be used as filler in polymer coatings based on epoxy (EP) and polyurethane resin (PUR). The end product created by the incineration of municipal waste and cement dusts from cement kiln bypasses were chosen for solidification. The hazardous waste used was solidified by a homogenisation method using filter fly ash from fluidized bed combustion of lignite and silica flour as the solidifying agents. The aim was to use as much hazardous waste as possible and incorporate it into the polymer ma

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González-Gómez, Lorena, Judith Gañán, Sonia Morante-Zarcero, Damián Pérez-Quintanilla, and Isabel Sierra. "Sulfonic Acid-Functionalized SBA-15 as Strong Cation-Exchange Sorbent for Solid-Phase Extraction of Atropine and Scopolamine in Gluten-Free Grains and Flours." Foods 9, no. 12 (2020): 1854. http://dx.doi.org/10.3390/foods9121854.

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A novel method was developed and applied to the determination of the most representative tropane alkaloids (TAs), atropine and scopolamine, in gluten-free (GF) grains and flours by HPLC-MS/MS. Accordingly a suitable sample treatment procedure based on solid-liquid extraction (SLE) and followed by strong cation-exchange solid-phase extraction (SCX-SPE) was optimized. SBA-15 mesostructured silica functionalized with sulfonic acids was evaluated as sorbent. The proposed method was fully validated in sorghum flour showing good accuracy with recoveries in the range of 93–105%, good linearity (R2 &g

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Jiang, Jun, Changtong Mei, Mingzhu Pan, and Jinzhen Cao. "How does Pickering Emulsion Pre-treatment Influence the Properties of Wood Flour and its Composites with High-Density Polyethylene?" Polymers 11, no. 7 (2019): 1115. http://dx.doi.org/10.3390/polym11071115.

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Silica synergistically stabilized paraffin Pickering emulsion is applied to modify wood flour (WF) for preparing wood/polymer composites. The effect of Pickering emulsion on properties of the WF and its composites with high-density polyethylene (HDPE) is investigated. The impregnation of paraffin Pickering emulsion could significantly improve the WF dispersion in HDPE matrix, resulting in increased melt flow index (MFI). It increased from 1.3 g/10 min (control) to 2.1 g/10 min (Pickering treatment) due to the lubrication of paraffin and rolling friction provided by silica nanoparticles. The hy

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25

Mohebbi, Iraj, and Taher Zubeyri. "Radiological Progression and Mortality among Silica Flour Packers: A Longitudinal Study." Inhalation Toxicology 19, no. 12 (2007): 1011–17. http://dx.doi.org/10.1080/08958370701533517.

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Scott, Peter M., Shriniwas R. Kanhere, and Edward J. Tarter. "Determination of Nivalenol and Deoxynivalenol in Cereals by Electron-Capture Gas Chromatography." Journal of AOAC INTERNATIONAL 69, no. 5 (1986): 889–93. http://dx.doi.org/10.1093/jaoac/69.5.889.

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Abstract Nivalenol (NIV) is an important Fusarium mycotoxin shown to occur naturally in grains from several countries. Extraction and cleanup procedures previously described for trichothecene analysis have been modified to give good recoveries of NIV from cereal products. The extraction solvent is methanol-water (7 + 3). The extract is treated with 10% aqueous ammonium sulfate solution and then a 10 mL aliquot is partitioned into ethyl acetate (160 mL) on a hydrophilic matrix. After evaporation, the sample extract is dissolved in methylene chloridemethanol (3 +1) for column chromatography on s

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Afandi, Ridwan, Sutiyoko Sutiyoko, Muhammad Munadi, and Burhan Ibnu Mubtadi. "APLIKASI KOMPOSISI COATING PENGECORAN LOST FOAM ALUMINIUM SILIKON." JURNAL CRANKSHAFT 3, no. 2 (2020): 15–22. http://dx.doi.org/10.24176/crankshaft.v3i2.5177.

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Pengecoran lost foam menggunakan polystyrene foam sebagai pola benda cor. Salah satu usaha untuk memperbaiki kondisi permukaan benda cor adalah dengan lapisan/coating yang dilapiskan pada pola. Coating pola menyebabkan gas yang terbentuk semakin sulit keluar dari cetakan.Berbagai masalah dapat muncul akibat adanya gas di dalam cetakan tersebut misalnya porositas, inklusi, dan lain-lain.Tujuan dari penelitian ini adalah untuk mendapatkan komposisi terbaik dari coating.Coating pola polystyrene foam menggunakan bahan colloidal silica dan zircon flour mesh 325.Komposisi zircon flour direncanakan 1

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Huang, Hong Yuan, and Yao Rong. "Model Test of Lining of Tunnel Fireproof Concretes." Applied Mechanics and Materials 174-177 (May 2012): 1537–40. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.1537.

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The model tests have been done to verified the reasonable proportion of the fireproof concretes; the test result was analyzed, the compressive strength of the fireproof concretes after heating higher than the common concretes, the fireproof concretes which admixed with the polypropylene textile fiber, the silica flour and the carbon fiber can prevent the blowout of the concretes.

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Desmarchelier, JM, and JC Dines. "Dryacide treatment of stored wheat: its efficacy against insects, and after processing." Australian Journal of Experimental Agriculture 27, no. 2 (1987): 309. http://dx.doi.org/10.1071/ea9870309.

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The efficacy of Dryacide (diatomaceous earth coated with silica aerogels) on wheat was tested in the laboratory against adult and immature stages of 4 species of Coleoptera and against immature stages of 1 species of Lepidoptera. The minimum effective level of Dryacide increased in the following order: immature Ephestia cautella (Walker) ~ immature Tribolium castaneum (Herbst) < immature Rhyzopertha dominica (F) < adult R. dominica ~ adult T. castaneum < adult Sitophilus oryzae (L) < adult Sitophilus granarius (L) < immature Sitophilus species. When wheat treated with Dryacide w

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Tran, Trung H., Hoang Thai, Huynh D. Mai, Hung Q. Dao, and Giang V. Nguyen. "Plasma Treatment and TEOS Modification on Wood Flour Applied to Composite of Polyvinyl Chloride/Wood Flour." Advances in Polymer Technology 2019 (August 1, 2019): 1–8. http://dx.doi.org/10.1155/2019/3974347.

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In this work, the effects of wood flour and tetraethyl orthosilicate (TEOS) content on the fusion time, fusion torque, fusion temperature, and fusion energy of polyvinyl chloride/wood flour (PVC/WF) composites were studied. Plasma-assisted surface treatment of WF before modifying with TEOS to form the silica nanoparticles on the surface of wood flour plays a role as a reinforcement of the phase interaction. This modification was confirmed by X-ray photoelectron spectroscopy (XPS) and field emission scanning electron microscopy (FESEM) techniques. Moreover, BET data showed that specific surface

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Sofya, Pocut Aya, Liana Rahmayani, and Apriliadi Saputra. "Glass Ionomer Cement (GIC) Surface Hardness after Addition of 5% Silica from Sea Sand." Journal of Biomimetics, Biomaterials and Biomedical Engineering 48 (November 2020): 70–76. http://dx.doi.org/10.4028/www.scientific.net/jbbbe.48.70.

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Glass ionomer cement (GIC) is a restorative material that can release flour so as to prevent further caries, biocompatible, translucent, and anti-bacterial, low tensile strength, GIC has limitations that is short working time and cannot be used in areas of teeth that have large masticatory pressure, susceptible to fracture toughness. The addition of silica in GIC is one aspect that needs to be considered because silica has high hardness properties. The source of silica can be synthesized from sea sand which has a silica content of about 98%. This study aims to determine the difference in surfa

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Omidiji, B. V., R. H. Khan, and M. S. Abolarin. "Silica-Kaolin Mix Effect on Evaporative Pattern Castings Surface Roughness." Archives of Foundry Engineering 16, no. 3 (2016): 83–88. http://dx.doi.org/10.1515/afe-2016-0055.

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Abstract The influence of the refractory coating which is a mixture of silica flour and kaolin on the surface roughness of the plate castings produced using evaporative patterns had been considered in this work. The kaolin was used as a binder and ratio method was employed to form basis for the factorial design of experiment which led to nine runs of experiments. Methyl alcohol at 99% concentration was used as the carrier for the transfer of the coating to the surface of the patterns. Pouring temperature was observed as a process parameter alongside the mix ratios of the coating. Attempts were

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Mahadik, Gitanjali, M. Sawant Dr., and A. P. Paranjape Prof. "Comparison of Nominal mix concrete with polymer based concrete, an experimental study." Journal of Civil and Construction Engineering 5, no. 3 (2019): 1–6. https://doi.org/10.5281/zenodo.3293957.

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The aim of this research paper is to study about Physical, Mechanical, Magnetic and insulating properties of concrete with some compositions. The two samples were prepared in which concrete material is mixed with resin chemical compound and percentage of replacement of aggregate by silica floor and Kolam (rangier) without water and water curing, which is designated by Group I. Another composition is made without resin chemical compound and it is designated as Group II. In which four types of samples are prepared by replacement of aggregate by silica floor and rangoli (Kolam) and the sample is

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Johnson, William M., and Marc S. Busnardo. "Silicosis following Employment in the Manufacture of Silica Flour and Industrial Sand." Journal of Occupational and Environmental Medicine 35, no. 7 (1993): 716–19. http://dx.doi.org/10.1097/00043764-199307000-00015.

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Deka, Biplab K., and Tarun K. Maji. "Effect of silica nanopowder on the properties of wood flour/polymer composite." Polymer Engineering & Science 52, no. 7 (2012): 1516–23. http://dx.doi.org/10.1002/pen.23097.

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Clementina Dilim, Igwebike-Ossi,. "Effects of Silica Morphology on Emulsion Paint Properties Using Rice Husk Ash and Silica Flour as Pigment Extenders." International Journal of Innovative Research in Science, Engineering and Technology 4, no. 9 (2015): 8044–53. http://dx.doi.org/10.15680/ijirset.2015.0409007.

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Kostelecká, Michaela, and Jiří Kolísko. "The Determination of Frost Resistance on Ultra High Performance Concrete." Advanced Materials Research 1025-1026 (September 2014): 1005–9. http://dx.doi.org/10.4028/www.scientific.net/amr.1025-1026.1005.

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The ultra high performance concrete (UHPC) has very special properties that are expressively different of normal concrete. Due to its high compression strength greater than 150 MPa, tensile strength greater than 20 MPa and improved durability, these represent significant advances in concrete technology. These materials include Portland cement, silica fume, quartz flour, fine silica sand, high-range water-reducer, water and either steel or organic fibres. Depending on the type of fibres used can influence the compressive strength. The article describes the tests of frost resistance on UHPC plat

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Hu, Xuan, Li Liu, Maomin Peng, et al. "One-Pot Preparation of Mixed-Mode Reversed-Phase Anion-Exchange Silica Sorbent and its Application in the Detection of Cyclopiazonic Acid in Feeds and Agricultural Products." Foods 13, no. 10 (2024): 1499. http://dx.doi.org/10.3390/foods13101499.

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A novel co-bonded octyl and pyridine silica (OPS) sorbent was prepared and applied for the solid phase extraction (SPE) of cyclopiazonic acid (CPA, a type of mycotoxin) in feed and agricultural products for the first time. A simple mixed-ligand one-pot reaction strategy was employed for OPS sorbent preparation. Nitrogen adsorption–desorption measurements, elemental analysis (EI), thermal gravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FT-IR) analysis demonstrated the successful immobilization of octyl and quaternary ammonium groups onto the surface of silica gel. The l

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Page, Denis B., Harvey W. Newsome, and Stephen B. Macdonald. "Determination of Several Halogenated Fumigants in Cereal Products by Steam Distillation and Capillary Gas Chromatography with Electron Capture Detection." Journal of AOAC INTERNATIONAL 70, no. 3 (1987): 446–50. http://dx.doi.org/10.1093/jaoac/70.3.446.

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Abstract A steam distillation procedure is described for the determination of ethylene dibromide (EDB), ethylene dichloride (EDC), and carbon tetrachloride (CT) in flour, flour-based mixes, baked cakes, breakfast cereals, and citrus fruits. A representative sample is steam distilled using a modified Garman steam distillation apparatus, the steam and volatile components are condensed, and the condensate is partitioned with hexane (EDB) or pentane (EDC and CT). The solvent extract is then injected on-column and analyzed by using a 15 m x 0.32 mm 1.0 μ DB-1701 fused-silica capillary column at 50°

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Xue, Cuizhen, Hongxia Qiao, Hui Cao, Qiong Feng, and Qiong Li. "Analysis on the Strength of Cement Mortar Mixed with Construction Waste Brick Powder." Advances in Civil Engineering 2021 (January 8, 2021): 1–10. http://dx.doi.org/10.1155/2021/8871280.

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The pile-up of massive construction waste causes serious challenges to environment and engineering practice. In order to promote the reuse rate of construction waste bricks, the effects of the content and fineness of construction waste brick powder and of brick powder-silica flour mixture on the strengths of cement mortar were experimentally investigated. Based on the test results, the significance of the particle characteristics of brick powder on mortar strength was analyzed by grey entropy method. The experimental results show that the early strength of cement mortar decreases due to the ad

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Xue, Cuizhen, Hongxia Qiao, Hui Cao, Qiong Feng, and Qiong Li. "Analysis on the Strength of Cement Mortar Mixed with Construction Waste Brick Powder." Advances in Civil Engineering 2021 (January 8, 2021): 1–10. http://dx.doi.org/10.1155/2021/8871280.

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The pile-up of massive construction waste causes serious challenges to environment and engineering practice. In order to promote the reuse rate of construction waste bricks, the effects of the content and fineness of construction waste brick powder and of brick powder-silica flour mixture on the strengths of cement mortar were experimentally investigated. Based on the test results, the significance of the particle characteristics of brick powder on mortar strength was analyzed by grey entropy method. The experimental results show that the early strength of cement mortar decreases due to the ad

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Mishra, Pritinanda, Sajini Elizabeth Jacob, Debdatta Basu, Manoj Kumar Panigrahi, and Vishnukanth Govindaraj. "Bilateral Spontaneous Pneumothorax in Chronic Silicosis: A Case Report." Case Reports in Pathology 2014 (2014): 1–3. http://dx.doi.org/10.1155/2014/561861.

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Silicosis is an occupational lung disease caused by inhalation of crystalline silica. People working in occupations like sandblasting, surface drilling, tunneling, silica flour milling, ceramic making, and so forth are predisposed to develop silicosis. Crystalline forms of silica are more fibrogenic than the amorphous forms, highlighting the importance of the physical form in pathogenesis. Lung biopsy is rarely performed for the diagnosis of silicosis as it can easily be detected by occupational history and radiological features. Patients with silicosis can develop complications like tuberculo

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Rutkowska, Gabriela, Mariusz Żółtowski, Filip Chyliński, Yuliia Trach, and Elżbieta Gortych. "The Effect of Glass Flour on the Microstructure and Properties of Fiber-Reinforced Concrete: Experimental Studies." Applied Sciences 13, no. 21 (2023): 11937. http://dx.doi.org/10.3390/app132111937.

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The introduced limits on carbon dioxide emissions by the European Union encourage experimental work on new-generation materials containing smaller amounts of clinker. Currently, silica fly ash from hard coal combustion is widely used in cement and concrete technology in Europe and Poland. Their wide application is determined mainly by the chemical and phase composition, and in particular by the activity of pozzolanic and its high fineness, like cement. The aim of this study was to assess the effect of glass flour and polypropylene fiber modifiers on the properties of concrete and its microstru

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Kobes, Joseph E., George I. Georgiev, Anthony V. Louis, et al. "A Comparison of Iron Oxide Particles and Silica Particles for Tracking Organ Recellularization." Molecular Imaging 17 (January 1, 2018): 153601211878732. http://dx.doi.org/10.1177/1536012118787322.

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Reseeding of decellularized organ scaffolds with a patient’s own cells has promise for eliminating graft versus host disease. This study investigated whether ultrasound imaging or magnetic resonance imaging (MRI) can track the reseeding of murine liver scaffolds with silica-labeled or iron-labeled liver hepatocytes. Mesoporous silica particles were created using the Stöber method, loaded with Alexa Flour 647 fluorophore, and conjugated with protamine sulfate, glutamine, and glycine. Fluorescent iron oxide particles were obtained from a commercial source. Liver cells from donor mice were loaded

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Li, Zhengqi, Harish Kizhakkumodom Venkata, and Prasada Rao Rangaraju. "Influence of silica flour–silica fume combination on the properties of high performance cementitious mixtures at ambient temperature curing." Construction and Building Materials 100 (December 2015): 225–33. http://dx.doi.org/10.1016/j.conbuildmat.2015.09.042.

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Wan, Wei, Chun-e. Huang, Jian Yang, and Tai Qiu. "Study on Gelcasting of Fused Silica Glass Using Glutinous Rice Flour as Binder." International Journal of Applied Glass Science 5, no. 4 (2014): 401–9. http://dx.doi.org/10.1111/ijag.12060.

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Ziaee, Masumeh, and Zahra Ganji. "Insecticidal efficacy of silica nanoparticles against Rhyzopertha dominica F. and Tribolium confusum Jacquelin du Val." Journal of Plant Protection Research 56, no. 3 (2016): 250–56. http://dx.doi.org/10.1515/jppr-2016-0037.

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Abstract Bioassays were conducted to assess the effects of two silicon dioxide nanoparticles of Aerosil® and Nanosav against adults of Rhyzopertha dominica F. and Tribolium confusum Jacquelin du Val. Silica nanoparticles were applied at the rates of 50, 100, 200 and 300 mg · kg−1 on wheat and peeled barley. The mortality was counted after 1, 2, 3, and 7 days of exposure. Another experiment was carried out to evaluate the effect of food source on the survival of beetles after exposure to silica nanoparticles. Adults were exposed to silica nanoparticles at the rate of 0.2 mg · cm−2 for 1 and 2 d

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Siriamornpun, S., M. Wootton, J. M. Cox, F. Bekes, and C. W. Wrigley. "Capillary electrophoresis of wheat gliadin proteins and its potential for wheat varietal identification using pattern matching software." Australian Journal of Agricultural Research 52, no. 8 (2001): 839. http://dx.doi.org/10.1071/ar00179.

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Gliadins from 11 wheat flours were extracted with 30% ethanol and fractionated by capillary electrophoresis on a 20-µm i.d. untreated fused silica capillary using 0.1 M phosphate buffer (pH 2.5) containing polymer modifier. Capillary electrophoresis conducted at a constant current provided very good resolution and reproducibility (relative standard deviation <0.5) in mp;lt;15 min. Pattern matching of the profiles was performed with the PatMatch program to provide quantitative comparisons, using the relative mobility and intensity data for each gliadin protein. Data processing parameters, in

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Yao, Rong, Dong Ling Peng, and Hong Yuan Huang. "Tensile Test of the Fireproof Lining of Tunnel." Advanced Materials Research 255-260 (May 2011): 170–73. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.170.

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The tensile fireproof lining of tunnel test has been done in orthogonal method with a custom-made fast fluctuation thermostat type resistance furnace which the maximum temperature may arrive 1200 °C , the heater was put for heating by choosing the RABT curve, the test result was analyzed, the ratio of tensile strength loss is changed with the meter of the polypropylene textile fiber, the silica flour and the carbon fiber, there is a optimality proportion when the ratio of tensile strength loss is low.

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Žlebek, Tomáš, Jakub Hodul, Lenka Mészárosová, and Rostislav Drochytka. "Possibilities of Using Hazardous Waste as Filler to Polymer Mortar." Solid State Phenomena 296 (August 2019): 93–98. http://dx.doi.org/10.4028/www.scientific.net/ssp.296.93.

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The aim of the research was to verify whether it is possible to use specific types of treated hazardous waste as a filler in special epoxy based polymer mortars. In particular, it was a neutralizing sludge (NS-HW) with a relatively high content of heavy metals and other hazardous substances. This alkaline sludge is formed as a by-product of galvanic plating of steel elements in the baths, which are subsequently thickened and neutralized with calcium hydroxide. During the experimental verification, it was determined what resulting mechanical properties can be achieved by using 40% of the treate

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