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Relevant bibliographies by topics / Vacuum aggregate

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Academic literature on the topic 'Vacuum aggregate'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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Journal articles on the topic "Vacuum aggregate"

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Zhang, Tingting, Keyang Wu, Shuai Wang, Li Wang, Wei Yang, and Chen Qian. "Preparation Technology and Properties of Carbon-Reinforced Recycled Aggregate Concrete and Mortar." Science of Advanced Materials 14, no. 11 (2022): 1692–701. http://dx.doi.org/10.1166/sam.2022.4360.

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Crushing the demolished waste concrete as aggregate to prepare fresh concrete may cause aggregate internal damage leading to strength reduction. To counter this issue, in the current study, the recycled aggregate is mixed with nano-calcium oxide in a vacuum reactor, and then a high concentration of carbon dioxide is introduced to fill the internal damages of the recycled aggregate. A layer of hydrophilic alkaline substance is formed on the surface of recycled aggregate to absorb carbon dioxide, which improves the strength of recycled aggregate particles and the bonding performance of aggregate

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Li, Zhi, and Feng Zhu. "Study on Testing the Relative Density of Coarse Aggregate by Vacuum Method instead of Basket Method." Applied Mechanics and Materials 204-208 (October 2012): 872–76. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.872.

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. In this paper, Vacuum Method was offered to test the relative density of coarse aggregate instead of basket method for the quick and exact mixture design of asphalt mixture. Firstly, the testing principle Vacuum Method was obtained by analyzing the experiment characteristic features of Vacuum Method and basket method. Secondly, the stability and accuracy of Vacuum Method were analyzed by testing the relative density of different kinds of coarse aggregate. Finally, the experiment conditions (the vacuum degree and pressure-holding time) were obtained through Comparison Experiment to the conven

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Jia, Zhiyou, José Aguiar, Sandra Cunha, and Carlos de Jesus. "Green Thermal Aggregates: Influence of the Physical Properties of Recycled Aggregates with Phase Change Materials." Materials 16, no. 18 (2023): 6267. http://dx.doi.org/10.3390/ma16186267.

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Increasing construction and demolition waste (CDW) and the large amount of energy consumption in the building operation process are high-profile issues at present. In the construction industry, recycled aggregated (RA) from CDW can be reutilized in construction, along with green materials, for example, as a road base layer, as aggregate in concrete, etc. Phase change materials (PCM) are often used as building materials due to their good latent heat storage properties. With the use of RA as a matrix to absorb PCM, a thermal performance aggregate can be obtained. This work studied the physical p

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Dickson, E. L., V. Rasiah, and P. H. Groenevelt. "Comparison of four prewetting techniques in wet aggregate stability determination." Canadian Journal of Soil Science 71, no. 1 (1991): 67–72. http://dx.doi.org/10.4141/cjss91-006.

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Variabilities in measured values of wet aggregate stability (WAS) of replicate samples of treatment exceeding that between treatments can create problems in interpreting treatment effects. The variabilities in WAS of replicate samples of treatment can be minimized by subjecting soil aggregates to a high vacuum fast prewetting technique. However, this technique is laborious and time consuming. In this paper the effect of four prewetting techniques: (1) and (2) high vacuum fast (HVFW) and slow (HVSW) wetting; (3) and (4) no vacuum (atmospheric) fast (NVFW) and slow wetting (NVSW) on the variatio

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Okechi, Ikechukwu K., Federico Aguayo, and Anthony Torres. "Coefficient of Thermal Expansion of Concrete Produced with Recycled Concrete Aggregates." Journal of Civil Engineering and Construction 11, no. 2 (2022): 65–74. http://dx.doi.org/10.32732/jcec.2022.11.2.65.

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This study presents a comparison between the coefficient of thermal expansion (CTE) of concrete produced with natural aggregate and that of concrete produced with recycled concrete aggregate. In order to achieve this, natural aggregate concrete (NAC) specimens were produced, tested, then crushed and sieved in the laboratory to obtain recycled concrete aggregates, which was then used in the production of recycled aggregate concrete (RAC) specimens. The RAC samples were then tested and compared to the NAC samples. The CTE testing was carried out using a AFTC2 CTE measurement system produced by P

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Ding, Qing Jun, Xiu Lin Huang, Hua Sun, and Kun Yang. "Research on Function Aggregate Prepared by Steel Wastewater Sludge." Advanced Materials Research 168-170 (December 2010): 1625–30. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.1625.

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Industrial wastewater sludge contains a certain amount of heavy metals, which will cause environmental pollution. In this paper high Cr, Zn content wastewater sludge from steel plant was used as the main raw material, with Kaolin and other materials as adjustment materials. Through optimization design of raw mix composition and firing system, a kind of function aggregate was got, which had an apparent relative density of about 3.0 g/cm3, a vacuum water absorption between 16%~23%, and a linear attenuation coefficient more than 0.15cm-1. Use XRD and SEM to analyze the existence state of heavy me

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Liu, Wen Bai, and Xia Li. "Experimental Study on Mechanical Properties of Recycled Concrete Specimens of Marine Engineering." Applied Mechanics and Materials 71-78 (July 2011): 331–37. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.331.

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Mechanical properties of recycled concrete under different conditions were studied in this paper. Based on three kinds of replacement percentage of recycled aggregate and four kinds of seawater corrosion conditions, the experimental study of mechanical properties of recycled concrete specimens corroded by seawater and produced under vacuum conditions were conducted, and compared with that of ordinary concrete specimens. Testing results show that compressive strength of recycled concrete decreases with the increase of both the replacement rate of recycled aggregate and the corrosion time by sea

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Šesták, Ondřej, Pavel Matějka, and Blanka Vlčková. "The Model of Linear Aggregate of Ag Colloidal Particles with Variable Inter-Particle Distances." Collection of Czechoslovak Chemical Communications 61, no. 1 (1996): 59–69. http://dx.doi.org/10.1135/cccc19960059.

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A simplified method of calculation of the surface plasmon energy states of the Ag colloidal aggregates characterized by varying inter-particle (inter-sphere) distance has been developed. Ag colloidal aggregate is approximated by a linear (one-dimensional) assembly of N silver spheres (of identical radii r and identical inter-sphere distances D) mutually interacting by a dipole-dipole interaction. The calculations use the following parameters: N from 1 to 25, r = 2, 5 and 10 nm, D = 0, 0.5, 1 and 2 nm, water and/or vacuum embedding media. The perturbation energies Vmin (stabilization energy) an

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Yannopapas, Vassilios, and Emmanuel Paspalakis. "Anisotropic Purcell Effect and Quantum Interference in Fractal Aggregates of Nanoparticles." Photonics 10, no. 8 (2023): 898. http://dx.doi.org/10.3390/photonics10080898.

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We study theoretically the emergence of an anisotropic Purcell factor in random two-dimensional fractal aggregates of nanoparticles. These nanoparticles can either be metallic nanoparticles made of silver, which exhibit surface plasmon resonances, or high-index dielectric nanoparticles like silicon, which possess optical Mie resonances. To calculate the spontaneous emission rates of a quantum emitter, we utilize the electromagnetic Green’s tensor within the framework of the coupled-dipole method. Our findings reveal that the Purcell factor exhibits spatial variations, with certain regions, ref

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Guo, Xue Dong, Chun Mei Gao, Hao Wang, and Ming Liang Zhang. "The Research of Bituminous Mixture Water Stability Based on Aggregate Cleanness." Advanced Materials Research 255-260 (May 2011): 3297–301. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.3297.

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Water stability of bituminous mixture, whose sediment concentration of coarse and fine aggregate are respectively in 1%, 2%, 3%, 4%, is tested and analyzed; meanwhile, under the condition of vacuum saturation, the water uptake and the residual water of bituminous mixture, whose sediment concentration of coarse and fine aggregate are respectively in 0%, 2%, 4%, are also tested. Based on the test, the tensile splitting strengths are analyzed, in correspondence to different water rates. Results show that the water stability of bituminous mixture reduces as the aggregate sediment concentration inc

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Dissertations / Theses on the topic "Vacuum aggregate"

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Мелейчук, Станіслав Станіславович, Станислав Станиславович Мелейчук та Stanislav Stanislavovych Meleichuk. "Опытный стенд исследования вакуумных агрегатов". Thesis, Издательство СумГУ, 2004. http://essuir.sumdu.edu.ua/handle/123456789/23300.

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Roper, Matthew B. "Evaluation of Laboratory Durability Tests for Stabilized Aggregate Base Materials." BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/902.

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The Portland Cement Association commissioned a research project at Brigham Young University to compare selected laboratory durability tests available for assessing stabilized aggregate base materials. The laboratory research associated with this project involved two granular base materials, three stabilizers at three concentration levels each, and three durability tests in a full-factorial experimental design. The granular base materials consisted of an aggregate-reclaimed asphalt pavement blend obtained from Interstate 84 (I-84) and a crushed limestone obtained from U.S. Highway 91 (US-91), w

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Vondříčková, Veronika. "Uplatnění kamenné prosívky jako ostřiva ve střepu pálených střešních tašek." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225517.

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Goal of this work is to judge the effect of different amount of waste aggregate in particular material mixture for production of clay roof tile according to norm ČSN EN 1304 (TONDACH Česká republika s r.o. – cihelna Šlapanice). This document is putting together published experience with usage of waste aggregate in the brickworks business. The effect of different mixture amount was tested in laboratories. Tests were most importantly aimed at temperature stress during burn, vacuum absorption method and mass by volume.

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Quadling, Amanda Gail. "The role of aggregates in the thermal stability of Mg-PSZ refractories for vacuum induction melting." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/28684.

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Mg-PSZ refractories used as vacuum induction melting crucibles are particle-reinforced composites with aggregate and matrix phases comprising fused zirconia. Three commercial varieties were cycled eight times to service temperatures and their microstructural and thermomechanical evolution investigated, with focus placed on the aggregate populations. Two refractories, with large aggregates of similar size, were found to retain stiffness after cycling but in the refractory containing aggregates with high stabiliser levels, reaction between the stabiliser and Al and Si impurities produced seconda

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Khoury, Eliane. "Maîtrise de l’eau efficace dans les bétons de granulats recyclés." Thesis, Ecole nationale supérieure Mines-Télécom Lille Douai, 2018. http://www.theses.fr/2018MTLD0011/document.

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Constitués de plusieurs composants (granulats naturels et pâte de ciment adhérente), les GBR ne sont à l’heure actuelle pas utilisés largement dans la formulation de nouveaux bétons. Les propriétés médiocres des GBR compliquent considérablement la détermination de la quantité d’eau efficace dans le béton frais. Tout d’abord, une étude bibliographique va mettre en évidence la grande dispersion des résultats des essais de caractérisation des GBR et des propriétés des bétons recyclés à l’état frais et durci. Ensuite, une étude vise à analyser l’hétérogénéité des GBR et des granulats de béton conc

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Book chapters on the topic "Vacuum aggregate"

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Osuolale, Funmilayo N., and Jie Zhang. "Exergetic Optimisation of Atmospheric and Vacuum Distillation System Based on Bootstrap Aggregated Neural Network Models." In Exergy for A Better Environment and Improved Sustainability 1. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-62572-0_66.

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Sposito, Garrison. "The Soil Solution." In The Chemistry of Soils. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780190630881.003.0008.

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The soil solution was introduced in Section 1.2 as a liquid water repository for dissolved solutes. Speaking more precisely, one can define the soil solution as the aqueous liquid phase in soil having a composition influenced by exchanges of matter and energy with soil air, soil minerals, and the soil biota. This more precise concept identifies the soil solution as an open system, and its designation as a phase means two things: (1) that it has uniform macroscopic properties (for example, temperature and composition) and (2) that it can be isolated from the soil profile and investigated experi

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Resnik, Judith. "Singular and Aggregate Voices: Audiences and Authority in Law & Literature and in Law & Feminism." In Law and Literature. Oxford University PressOxford, 1999. http://dx.doi.org/10.1093/oso/9780198298137.003.0031.

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Abstract This essay is written for a segment devoted to ‘Theory’ in a ‘Law and Literature Colloquium’. Such a title is an invitation to be self-conscious, but self-conscious about what? The concept of ‘Law & Literature’ could be understood as either marvellously capacious or vacuous. A central issue internally is whether ‘Law & Literature’ merits acceptance as a field of study or instead refers to an analytically disparate set of interests, temporarily sharing a moniker but not having much in common. The question externally is whether anyone, save those inside, cares. ‘Anyone’ is a lar

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"Morphological characteristics of fine air particulate matter collected in the suburban area." In Book of Abstracts - RAD 2025 Conference. RAD Centre, Niš, Serbia, 2025. https://doi.org/10.21175/rad.abstr.book.2025.11.5.

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The air quality monitoring in both urban and rural areas has revealed the ambient particulate matter as the most harmful airborne pollutant for human health while in addition to the particle composition, their size and shape are crucial for the behavior in the body. Here are presented results of the physical-chemical characterization of the submicron particles collected at the Belgrade suburban monitoring site Zeleno Brdo. Daily (24h) samples were collected by Leckel reference samplers on the polytetrafluoroethylene (PTFE) 47 mm filters in four seasons 2018/19. Particulate matter with submicro

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Conference papers on the topic "Vacuum aggregate"

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Omar, Omar, Momen Mousa, Marwa Hassan, et al. "Vacuum Impregnation of Bacillus pseudofirmus into Fine Lightweight Aggregate." In Tran-SET 2021. American Society of Civil Engineers, 2021. http://dx.doi.org/10.1061/9780784483787.036.

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Han, Jie, and Cheng Lin. "A Feasibility Study on Reducing Flowability of Vacuum Tower Bottoms Using Aggregate." In GeoFlorida 2010. American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41095(365)283.

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Tanizawa, Ken, Kentaro Kato, and Fumio Futami. "Real-time 50-Gbit/s Spatially Multiplexed Quantum Random Number Generator Based on Vacuum Fluctuation." In Optical Fiber Communication Conference. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/ofc.2023.th4a.8.

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We demonstrate four-channel parallel high-speed random number generation using a quantum entropy source based on vacuum fluctuations and a real-time FPGA random number extractor. A record-high aggregated generation rate of 50 Gb/s is achieved.

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Go, Eunsol, Hyojin Jeon, Jeong-Woong Lee, et al. "Optimization of carbon nanotube paste emitter by controlling the size distribution of SiC nanofiller aggregates." In 2017 30th International Vacuum Nanoelectronics Conference (IVNC). IEEE, 2017. http://dx.doi.org/10.1109/ivnc.2017.8051588.

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Go, Eunsol, Hyojin Jeon, Jeong-Woong Lee, et al. "High-performance carbon nanotube paste emitters by using the optimal size distribution of SiC nanometer-fillers aggregates." In 2018 31st International Vacuum Nanoelectronics Conference (IVNC). IEEE, 2018. http://dx.doi.org/10.1109/ivnc.2018.8520202.

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Guo, T., C. J. Li, G. J. Yang, C. X. Li, and G. J. Qiao. "Preparation and Characterization of Super-Hydrophobic Surface through Particle Deposition by Vacuum Cold Spray." In ITSC 2012, edited by R. S. Lima, A. Agarwal, M. M. Hyland, et al. ASM International, 2012. http://dx.doi.org/10.31399/asm.cp.itsc2012p0657.

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Abstract Super-hydrophobic materials have broad application prospects in industry, agriculture and daily life. Not only the types of the materials but also the structure and the morphology of their surface have a significant impact on the hydrophobicity of materials. In this study, nano-structured TiO2 coatings were deposited on glass surface by vacuum cold spray using agglomerated nano-TiO2 powder and aggregated nanostructured TiO2 powder to create nanostructured and micro-nano hierarchical structured TiO2 surface. The surface morphology of nanostructured TiO2 deposited surface was characteri

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Harling, Henry E. "Design of an Automatic Waterhammer Prevention System." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57405.

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The Nuclear Regulatory Commission (NRC) issued Generic Letter (GL) 96-06 [1] which required utilities to evaluate the potential for waterhammers in cooling water systems serving containment following a Loss of Offsite Power (LOOP) concurrent with a Loss of Coolant Accident (LOCA) or Main Steam Line Break (MSLB). At Duke’s Oconee Nuclear Station, analysis and system testing in response to GL 96-06 concluded that waterhammers occur in the Low Pressure Service Water (LPSW) system during all LOOP events. Column Closure Waterhammers (CCWH) occur when the LPSW pumps restart following a LOOP and rapi

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Shi, J. M., C. X. Ding, and X. Q. Wu. "Preparation of Bioactive and Porous Titanium Coating by Vacuum Plasma Spraying and Chemical Treatment." In ITSC2001, edited by Christopher C. Berndt, Khiam A. Khor, and Erich F. Lugscheider. ASM International, 2001. http://dx.doi.org/10.31399/asm.cp.itsc2001p0593.

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Abstract This article describes a method of preparing bioactive and porous titanium coatings on titanium-based substrate using vacuum plasma spraying and chemical treatment in alkali solution. The porous titanium coating was fabricated in two-layer structure. The bond strength, average porosity and roughness (Ra) of the porous titanium coating are 55MPa, 30% and 21µm, respectively. The chemical treatment of as-sprayed titanium coatings was carried out in 5.0M NaOH solutions at 40 °C for 24h. The surface morphology and structure of the porous titanium coating before and after chemical treatment

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Li, Tiantian, Jonathan Luntz, Diann Brei, Wonhee Kim, and Paul Alexander. "Hinged Tile-Based Air Surface for Morphing Windshield Cowling." In ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/smasis2022-91443.

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Abstract The gap between the windshield and hood provides an opening for windshield wipers to operate, but can be problematic at other times, gathering leaves and snow. Active morphing approaches provide an opportunity to create a windshield cowling that addresses this issue by covering the gap normally, and actively curling out of the way to allow wiper operation. Most existing morphing techniques lack the simultaneous force/stroke generation, cannot perform two-way actuation, or fail to rigidly hold their position against varying loads such as wind. This paper introduces a useful curling air

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Yoon, Hui su, та In-Hwan Kim. "Lipozyme TL IM-catalyzed synthesis of γ-linolenic acid rich triacylglycerol from borage oil as a novel strategy". У 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/sgec7971.

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Lipozyme TL IM from Thermomyces lanuginosus is widely employed for various enzymatic reactions such as esterification, hydrolysis, and alcoholysis. However, none of the publications is using Lipozyme TL IM as a biocatalyst to synthesize triacylglycerol (TAG) with fatty acid and glycerol because the silica gel carrier in Lipozyme TL IM aggregates with glycerol. Thus, most studies regarding the synthesis of TAG via lipase-catalyzed esterification have employed Novozym 435, one of the most expensive enzymes. In present study, we attempted to synthesize TAG using Lipozyme TL IM with glyceride, ins

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Reports on the topic "Vacuum aggregate"

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Wei, Fulu, Ce Wang, Xiangxi Tian, Shuo Li, and Jie Shan. Investigation of Durability and Performance of High Friction Surface Treatment. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317281.

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The Indiana Department of Transportation (INDOT) completed a total of 25 high friction surface treatment (HFST) projects across the state in 2018. This research study attempted to investigate the durability and performance of HFST in terms of its HFST-pavement system integrity and surface friction performance. Laboratory tests were conducted to determine the physical and mechanical properties of epoxy-bauxite mortar. Field inspections were carried out to identify site conditions and common early HFST distresses. Cyclic loading test and finite element method (FEM) analysis were performed to eva

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