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Статті в журналах з теми "Compaction of allograft material"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Putzer, David, Débora Coraça-Huber, Alexander Wurm, Werner Schmoelz, and Michael Nogler. "The Mechanical Stability of Allografts After a Cleaning Process: Comparison of Two Preparation Modes." Journal of Arthroplasty 29 (March 24, 2014): 1642–46. https://doi.org/10.1016/j.arth.2014.03.028.

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In revision hip arthroplasty, bone loss can be compensated by impacting allograft material. Cleaning processes reduce the risk of bacterial and viral contamination. Cleaned allograft material was compared to native untreated allografts by using a uniaxial compression test. 30 measurements were performed for each group before and after compaction. Grain size distribution and weight loss were determined. A reduction in the amount of large bone fragments and a higher compaction rate were observed in the cleaned bone grafts. The cleaned bone chips presented with a better mechanical resistance to a

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2

Widiyanti, Prihartini. "Composition Variation on Bone Graft Synthesis Based on Hydroxyapatite and Alginate." Journal of Biomimetics, Biomaterials and Biomedical Engineering 29 (October 2016): 14–21. http://dx.doi.org/10.4028/www.scientific.net/jbbbe.29.14.

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Bone grafting is a surgical procedure that replaces missing bone with material from patient′s own body, an artificial, synthetic, or natural substitute. As natural bone grows, it generally replaces the graft material completely, resulting in a fully integrated region of new bone. The type of bone graft are allograft-based bone graft involves allograft bone, Factor-based bone graft are natural and recombinant growth , cell-based bone grafts, ceramic-based bone graft substitutes, polymer-based bone graft. The aim of study are to explore the influence of variations in the composition of alginate

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3

HIROSE, Norimitsu. "Powder Material for Compaction." Journal of the Japan Society for Technology of Plasticity 56, no. 651 (2015): 285–89. http://dx.doi.org/10.9773/sosei.56.285.

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4

Zhou, Hao, Yongjian Guo, Qiang Xu, Guixia Zhang, and Zhen Wang. "Study on Vibration Compaction Energy of Basement Material." Coatings 12, no. 10 (2022): 1495. http://dx.doi.org/10.3390/coatings12101495.

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In order to confirm the vibrate compaction energy, the indoor vibration compaction was conducted. Indoor vibration compactor was used to compact skeleton dense cement stabilized aggregate. The acceleration and displacement of the indenter and compaction pressure during the compaction process were measured. The bounce model and the hysteresis curve based on measurement parameters were used to calculate the compaction energy. Three vibration compaction energy were affirmed as: energy of the machinery itself (Eself), energy transmitted from machinery to compacted material (Et) and energy stored b

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5

Yildiz, Tolga, Joel Gegenheimer, Marco Gleiß, and Hermann Nirschl. "Influence of Particle Properties on Filter Cake Compaction Behavior under Oscillatory Shear." Processes 11, no. 7 (2023): 2076. http://dx.doi.org/10.3390/pr11072076.

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Filter cake compaction is a common method for mechanical deliquoring of compressible filter cakes. In addition to the conventional squeezing compaction method, applying oscillatory shear to filter cakes at low pressure is an alternative compaction process in cake filtration. While basic differences in terms of compaction success have already been identified for various materials, a systematic analysis of the influence of material properties on compaction behavior under oscillatory shear is missing. The present work addresses the influence of particle size distribution and increasing particle a

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6

Chen, Qun, and Yuzhi Li. "SGC Tests for Influence of Material Composition on Compaction Characteristic of Asphalt Mixtures." Scientific World Journal 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/735640.

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Compaction characteristic of the surface layer asphalt mixture (13-type gradation mixture) was studied using Superpave gyratory compactor (SGC) simulative compaction tests. Based on analysis of densification curve of gyratory compaction, influence rules of the contents of mineral aggregates of all sizes and asphalt on compaction characteristic of asphalt mixtures were obtained. SGC Tests show that, for the mixture with a bigger content of asphalt, its density increases faster, that there is an optimal amount of fine aggregates for optimal compaction and that an appropriate amount of mineral po

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7

Zhuo, Shuai, Ning Wang, Ping Lu, and Yong Yao. "The Experimental Study on the Performance of the Reinforced Red Mudstone Using Triaxial Tests." Advanced Materials Research 446-449 (January 2012): 1445–49. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.1445.

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via the red mudstone proceed of the unconsolidated and non-drained triaxial compression test, the research in different degree of compaction reinforcement material under the influence of red mudstone strength. To the different reinforcement layers, different ambient pressure test, analyses not reinforcement material layer number of decorate the more the better, decorate three layer of steel material is better than the four layers of reinforcement decorate material sample. The analysis in different degree of compaction element soil and reinforced soil under test result, the reinforcement materi

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8

Wang, Yong Bing, Guo Qiang Ying, Jian Lin Hu, Hua Wei Wei, and Qian Zhang. "Analysis for Influence Factors of Cold Recycling Mixture Compaction Test." Applied Mechanics and Materials 204-208 (October 2012): 1633–37. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.1633.

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In order to study the factors which influence the inorganic binder stabilized material’s compaction test results, different recycled material content therefore different reclaimed gradation mixtures are tested while varying the amount of cement. The experiment results show that contents of the recycled base material and the recycled surface material on the compaction test results are determined by the change of their density and water absorption ratio. Dry density of the recycled mixture increases with the increase of the reclaimed base material density. Low water absorption ratio of the recyc

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9

Peterson, Robert L., Kamyar C. Mahboub, R. Michael Anderson, Eyad Masad, and Laith Tashman. "Superpave® Laboratory Compaction Versus Field Compaction." Transportation Research Record: Journal of the Transportation Research Board 1832, no. 1 (2003): 201–8. http://dx.doi.org/10.3141/1832-24.

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Laboratory compaction is an important part of asphalt mix design. For the mix design process to be effective, laboratory compaction must adequately simulate field compaction. In this study mechanical properties measured with the Superpave® shear tester were used to evaluate field compaction and laboratory compaction. The field compaction consisted of three test sections with different compaction patterns. The laboratory compaction used the Superpave gyratory compactor with adjustments to several parameters. Results of this study indicate that current gyratory protocol produces specimens with s

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10

Guillard, François, Pouya Golshan, Luming Shen, Julio R. Valdès, and Itai Einav. "Compaction dynamics of crunchy granular material." EPJ Web of Conferences 140 (2017): 07012. http://dx.doi.org/10.1051/epjconf/201714007012.

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11

Fenton, Gregg, Blaine Asay, and Devon Dalton. "Impact Compaction of a Granular Material." Procedia Engineering 103 (2015): 121–28. http://dx.doi.org/10.1016/j.proeng.2015.04.017.

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12

Yu, Jiang Miao, Zhi Li, and Xiao Ning Zhang. "Validity Evaluation of Different Laboratory Asphalt Concrete Material Compaction Methods with Digital Image Processing Technique." Advanced Materials Research 255-260 (May 2011): 3292–96. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.3292.

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The digital image processing technique was applied to analyze and evaluate the coarse aggregate orientation property in asphalt mixture specimens. Specimens produced by Marshall compaction, vibratory compaction, gyratory compaction, and roller compaction were separately evaluated and compared with the core samples drilled from real asphalt pavement. The quantitative index named maximum likelihood angle (MLA) was developed for statistical analysis on the coarse aggregate orientation. It is found that the coarse aggregate orientation properties of the specimens using different compaction methods

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13

Kosgey, Wilson Kipsang, Simpson Nyambane Osano, and Sixtus Kinyua Mwea. "Characteristics of Cinder Gravel as Road Pavement Construction Material in Meru County, Kenya." East African Journal of Engineering 6, no. 1 (2023): 16–35. http://dx.doi.org/10.37284/eaje.6.1.1038.

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The availability of suitable road construction materials that meet the specification requirements is becoming scarce, therefore the use of marginal materials presents challenges during construction and performance when used in the construction of road projects. This study exploited the gap that existed by investigating the engineering properties of cinder gravel sourced from Meru County in Kenya. The objectives of the study were to evaluate the engineering characteristics of neat and blended cinder gravel for suitability as road pavement construction material of Low Volume Sealed Roads (LVSRs)

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14

Yakovenko, Andrii, and Oleksii Vasyliev. "Determination of the density of the surface which is exposed to various working bodies of the vibration plate VP-10." Technology audit and production reserves 4, no. 1(78) (2024): 26–31. http://dx.doi.org/10.15587/2706-5448.2024.310802.

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The object of research is a vibrating plate with interchangeable working bodies developed by the authors. Vibrating plates are an integral part of small mechanization equipment and are mainly intended for layer-by-layer compaction of various materials, such as sand, gravel, bituminous mixtures, etc. Vibration compaction methods are widely used in the construction of road surfaces and other infrastructure facilities. Self-propelled vibrating slabs are also used effectively in other construction processes such as compaction, trench reinforcement, land work and laying paving slabs. They ensure ef

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15

Guo, Huajie, Huihuang Jiang, and Mingxian Gao. "Research on Sound Source Material Recognition Technology in Indoor Geotechnical Inspection." Geofluids 2022 (June 30, 2022): 1–12. http://dx.doi.org/10.1155/2022/9433757.

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Studies have shown that physical parameters such as size have obvious influence and relevance on the sound spectrum structure. In order to study the new detection technology of sound recognition of compaction of soil, this article conducted a large number of indoor soil sample hammering tests. The timbre features of the sound are extracted by the impact sound feature extraction method based on the principle of auditory perception, and the focus is on the correlation between frequency domain eigenvalues such as spectral centroid and different compaction of soil. By grouping and analyzing the mu

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16

Hua, Tianbo, Xingguo Yang, Qiang Yao, and Hongtao Li. "Assessment of Real-Time Compaction Quality Test Indexes for Rockfill Material Based on Roller Vibratory Acceleration Analysis." Advances in Materials Science and Engineering 2018 (2018): 1–15. http://dx.doi.org/10.1155/2018/2879321.

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Compaction quality is directly related to the structure and seepage stability of a rockfill dam. To timely and accurately test the compaction quality of the rockfill material, four real-time test indexes were chosen to characterize the soil compaction degree based on the analysis of roller vibratory acceleration, including acceleration peak value (ap), acceleration root mean square value (arms), crest factor value (CF), and compaction meter value (CMV). To determine which of these indexes is the most appropriate, a two-part field compaction experiment was conducted using a vibratory roller in

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17

Kulig, Ryszard, Grzegorz Łysiak, Zbigniew Krzysiak, Monika Wójcik, and Renata Różyło. "Impact of Pressure on the Parameters of Pea Straw Compaction." Agricultural Engineering 23, no. 3 (2019): 79–87. http://dx.doi.org/10.1515/agriceng-2019-0028.

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AbstractThis paper presents the results of pea straw compaction efficiency tests. The compliance of the tested material to pressure agglomeration was assessed depending on the compaction pressure used (45-113 MPa). The compaction was carried out using a Zwick testing machine, type Z020/TN2S, and a closed die pressing unit. It was found that, along with the pressure increase, the material density in the chamber increased (from 1.255 to 1.76 g∙cm−3), as well as the agglomerate's density (from 0.739 to 1.05 g∙cm−3) and the product's mechanical resistance (from 0.31 to 0.69 MPa). Increasing the co

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18

Li, Shanzhen, Yangsheng Ye, Liang Tang, Degou Cai, Shuang Tian, and Xianzhang Ling. "Experimental Study on the Compaction Characteristics and Evaluation Method of Coarse-Grained Materials for Subgrade." Materials 14, no. 22 (2021): 6972. http://dx.doi.org/10.3390/ma14226972.

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Coarse-grained materials are widely used in high-speed railway construction, and it is of great significance to research its compaction characteristics due to the high quality control requirements. In this regard, a field compaction experiment was conducted at a subgrade near Bazhou Station of Beijing-Xiong’an Intercity Railway. The test results of the compaction effect were presented in this study at first. The roller-integrated compaction measurements (i.e., compaction meter value, CMV) were compared with several traditional in-situ tests (i.e., plate load test, light falling weight deflecto

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19

Wróbel, Marek, Marcin Jewiarz, Krzysztof Mudryk, and Adrian Knapczyk. "Influence of Raw Material Drying Temperature on the Scots Pine (Pinus sylvestris L.) Biomass Agglomeration Process—A Preliminary Study." Energies 13, no. 7 (2020): 1809. http://dx.doi.org/10.3390/en13071809.

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For biomass compaction, it is important to determine all aspects of the process that will affect the quality of pellets and briquettes. The low bulk density of biomass leads to many problems in transportation and storage, necessitating the use of a compaction process to ensure a solid density of at least 1000 kg·m−3 and bulk density of at least 600 kg·m−3. These parameters should be achieved at a relatively low compaction pressure that can be achieved through the proper preparation of the raw material. As the compaction process includes a drying stage, the aim of this work is to determine the

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20

Short, Mark, and James J. Quirk. "The effect of compaction of a porous material confiner on detonation propagation." Journal of Fluid Mechanics 834 (November 17, 2017): 434–63. http://dx.doi.org/10.1017/jfm.2017.736.

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The fluid mechanics of the interaction between a porous material confiner and a steady propagating high explosive (HE) detonation in a two-dimensional slab geometry is investigated through analytical oblique wave polar analysis and multi-material numerical simulation. Two HE models are considered, broadly representing the properties of either a high- or low-detonation-speed HE, which permits studies of detonation propagating at speeds faster or slower than the confiner sound speed. The HE detonation is responsible for driving the compaction front in the confiner, while, in turn, the high mater

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21

Ranasinghe, Rajitha, Arooran Sounthararajah, and Jayantha Kodikara. "An Intelligent Compaction Analyzer: A Versatile Platform for Real-Time Recording, Monitoring, and Analyzing of Road Material Compaction." Sensors 23, no. 17 (2023): 7507. http://dx.doi.org/10.3390/s23177507.

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Intelligent compaction (IC) is a technology that uses non-contact sensors to monitor and record the compaction level of geomaterials in real-time during road construction. However, current IC devices have several limitations: (i) they are unable to visualize or compare multiple intelligent compaction measurement values (ICMVs) in real-time during compaction; (ii) they are not retrofittable to different conventional rollers that exist in the field; (iii) they do not incorporate corrections for ICMVs reflecting variable field conditions; (iv) they are unable to integrate construction specificati

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22

Ren, Jiaolong, Di Li, and Siyuan Wang. "Combined Effect of Compaction Methods and Loading Conditions on the Deformation Behaviour of Unbound Granular Material." Advances in Civil Engineering 2020 (July 22, 2020): 1–16. http://dx.doi.org/10.1155/2020/2419102.

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Unbound granular material is an important construction material that is used for flexible pavement. As one of the most important indices used for describing the properties of unbound granular material, the deformation characteristic is significantly influenced by the compaction method used. However, the effects of the compaction method on the deformation behaviour are neglected in the existing studies. Hence, we investigate the deformation characteristics of unbound granular material produced by the vertical vibration compaction method (VVCM) and the modified Proctor compaction method (MPCM) v

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23

Kronbergs, Ēriks. "BIOMASS COMPACTION POTENTIALITIES." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (June 20, 2001): 50. http://dx.doi.org/10.17770/etr2001vol1.1935.

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Substantial increases in global energy consumption and depletion o f fossil energy resources demand for development o f alternative energy resources. The more significant part (74%) of renewable energy sources has been planned for biomass energy in European Union. Substitution of fossil feedstocks for energy and materials by biomass is important measure for GHG emission mitigation. Development o f biodegradable polymers, construction materials and organic fertilizers from biomass let us challenge economy to a more sustainable way.Naturally biomass is material of low density therefore new mobil

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24

Nikolić, Nenad, Tijana Miletić, Jovana Kovačević, Đorđe Medarević, and Svetlana Ibrić. "Usage of compaction simulators for the powder compression characterization: Advantages and limitations." Arhiv za farmaciju 72, no. 6 (2022): 546–65. http://dx.doi.org/10.5937/arhfarm72-41301.

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Compaction simulators are designed as machines which can provide an in-depth analysis of the powder compaction process. Characterization of the powder compression and compaction process, as well as material characterization, play an important role in the formulation and manufacturing process design and development, as well as in creating a strong knowledge basis for the scale-up of the tablet compression and troubleshooting in further stages of the product lifecycle. Although compaction simulators are designed to simulate the compression process on high-speed tablet-presses, with the advantage

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25

Bembenek, Micha��. "The use of computer image analysis in determining material flow in the roller press compacting unit during compacting of fine-grained material." Computer Methods in Material Science 18, no. 2 (2018): 58–63. http://dx.doi.org/10.7494/cmms.2018.2.0614.

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Mechanisms of fine-grained material flow in a roller press are a constant subject of research. The proper transfer of feed in the feeder has a significant influence on the correct course of the compaction and consolidation process, product quality, and the intensity of wear of the forming components. A few mathematical models of compaction process have been put forth, but they are focused mainly on loads in the compacting unit and consolidated material properties. During compaction the loose material properties including the Young module, the external and internal friction coefficient, and the

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26

Shang, C., I. Csaba Sinka, and J. Pan. "Material Data for Modelling Density Distributions in Green Parts." Materials Science Forum 672 (January 2011): 207–14. http://dx.doi.org/10.4028/www.scientific.net/msf.672.207.

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Die compaction of powders is a process which involves filling a die with powder, compaction using rigid punches to form a dense compact and ejection from the die. The process can be treated as a large deformation plasticity problem. The challenge is to develop and implement appropriate constitutive models that capture the evolution of the powder from a loose state into a dense compact. In this paper we describe data analysis procedures and calibrate classic incremental plasticity models, such as Cam-Clay, Drucker-Prager cap models. The complexity of the models is increased from models with a h

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27

Muthuraja, A., and S. Senthilvelan. "Compaction Characteristics of Tungsten Carbide Based Self-Lubricant Cutting Tool Material." Applied Mechanics and Materials 592-594 (July 2014): 87–91. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.87.

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In this study, an attempt has been made to develop solid lubricant cutting tool material with the aid of powder metallurgy technique. Chosen tungsten carbide, cobalt and calcium fluoride were milled in the planetary ball milling, followed by uniaxial compaction and sintering in a tube furnace. Materials were milled at various hours of milling and compaction pressure to understand the effect of relative density and hardness of sintered specimens. It is found that the relative density of compacted and sintered specimens found to increase with the compaction pressure but decreased with milling ti

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28

Staf, Hjalmar, Per Lindskog, Daniel C. Andersson, and Per-Lennart Larsson. "On the Influence of Material Parameters in a Complex Material Model for Powder Compaction." Journal of Materials Engineering and Performance 25, no. 10 (2016): 4408–15. http://dx.doi.org/10.1007/s11665-016-2294-y.

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Abstract Parameters in a complex material model for powder compaction, based on a continuum mechanics approach, are evaluated using real insert geometries. The parameter sensitivity with respect to density and stress after compaction, pertinent to a wide range of geometries, is studied in order to investigate completeness and limitations of the material model. Finite element simulations with varied material parameters are used to build surrogate models for the sensitivity study. The conclusion from this analysis is that a simplification of the material model is relevant, especially for simple

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29

Surzhikov, Anatoly P., Andrey V. Malyshev, Anna B. Petrova, and Elena A. Sheveleva. "Microstructure Formation of LiTiZn Ferrite Ceramics during Radiation-Thermal Sintering." Materials Science Forum 970 (September 2019): 265–75. http://dx.doi.org/10.4028/www.scientific.net/msf.970.265.

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The effect of intensification of the compaction rate of ferrite compacts under irradiation conditions with a high-power electron beam both in the heating regime and in the isothermal stage of sintering was established. The compaction mechanisms of the compacts are different at each of these stages. The intensification of compaction at the non-isothermal stage in radiation-thermal conditions is due to processes involving the liquid phase. The role of bismuth oxide in the compaction of the material at the isothermal stage of sintering is unessential, but its influence is significant in recrystal

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30

Wünsch, Isabell, Irene Friesen, Daniel Puckhaber, Thomas Schlegel, and Jan Henrik Finke. "Scaling Tableting Processes from Compaction Simulator to Rotary Presses—Mind the Sub-Processes." Pharmaceutics 12, no. 4 (2020): 310. http://dx.doi.org/10.3390/pharmaceutics12040310.

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Compaction simulators are frequently used in the formulation and process development of tablets, bringing about the advantages of flexibility, low material consumption, and high instrumentation to generate the most possible process understanding. However, their capability of resembling general aspects of rotary press compaction and their precision in simulating or mimicking sub-processes such as feeding and filling need to be systematically studied. The effect of material deformation behavior, blend composition, and feeding on tensile strength and simulation precision as compared with rotary p

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31

Zhou, Changhong, Xueyan Liu, Panos Apostolidis, A. Scarpas, and Liang He. "Induction Heating-Assisted Compaction in Porous Asphalt Pavements: A Computational Study." Applied Sciences 8, no. 11 (2018): 2308. http://dx.doi.org/10.3390/app8112308.

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Low temperature asphalt (LTA) technologies, such as warm-mixed asphalt mixes, are utilized in the paving industry to lower energy demands and greenhouse gas emissions during asphalt mixing and pavement construction. However, the asphalt mixes developed that incorporate LTA additives are more sensitive than hot-mixed asphalts to temperature reduction during compaction, which leads to inadequate compaction and subsequent poor pavement performance. The induction heating-assisted compaction of pavement structures appears to be an effective way to ameliorate such issues and to improve mix compactab

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32

Idie, Johanis Hs Ervans. "Analisa Tebal Perkerasan dengan Menggunakan Material Kinang Jingkion." Syntax Literate ; Jurnal Ilmiah Indonesia 8, no. 10 (2023): 5994–6004. https://doi.org/10.36418/syntax-literate.v8i10.13781.

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The purpose of this study is 1) Analyzing the Pavement Layer Thickness using Kinang Jingkion material. 2) Calculating the Compaction Layer for CBR by pressing the Kinang Jingkion material. The local Kinang Jingkion material used in this study as a surface layer was taken from a location in the Yalimo Regency of Papua Province. As for Kinang Jingkion material, it is located in Habie River, Yahukimo Regency with a geographical point of 03o45'56.63" South Latitude and 139o23'26.19'' North Latitude. Perimer data is data taken directly by researchers by digging the original source of the object und

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33

Jayawickrama, Priyantha W., Aruna L. Amarasiri, and Pedro E. Regino. "Use of Dynamic Cone Penetrometer to Control Compaction of Granular Fill." Transportation Research Record: Journal of the Transportation Research Board 1736, no. 1 (2000): 71–80. http://dx.doi.org/10.3141/1736-10.

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Анотація:

Granular material is commonly used as backfill and embedment material for buried structures, including thermoplastic pipe. Proper compaction of this material is crucial to the successful performance of the pipe. However, the commonly used Proctor density approach cannot be used for the field compaction control of these materials because it does not provide a well-defined moisture-density relationship. An alternative method used by the authors for compaction control of such materials is described. This method involves a device known as the dynamic cone penetrometer (DCP). Findings are presented

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Peciar, Peter, Oliver Macho, Maroš Eckert, et al. "MODIFICATION OF POWDER MATERIAL BY COMPACTION PROCESSING." Acta Polytechnica 57, no. 2 (2017): 116. http://dx.doi.org/10.14311/ap.2017.57.0116.

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There are different criteria for assessing the appropriateness of an agglomeration technology in the deployment processing of dry, fine and dirty dust burdening in the communal and working environment. Besides the benefit of the environment components, the agglomeration technology offers the possibility of re-processing the material as the primary raw material within a wide range of industries. Preliminary tests have shown that the compressed material remains in the memory from the previous compression. For returning the already processed material into a primary production, it is essential tha

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Cochran, Michael T., and Joseph M. Powers. "Computation of compaction in compressible granular material." Mechanics Research Communications 35, no. 1-2 (2008): 96–103. http://dx.doi.org/10.1016/j.mechrescom.2007.10.003.

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Morland, L. W., A. Sawicki, and P. C. Milne. "Uni-axial compaction of a granular material." Journal of the Mechanics and Physics of Solids 41, no. 11 (1993): 1755–79. http://dx.doi.org/10.1016/0022-5096(93)90030-j.

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Xia, Jing Jing. "Research on the Key Technology of Road Machinery Intelligent Compaction." Applied Mechanics and Materials 373-375 (August 2013): 142–45. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.142.

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Анотація:

The degree of compaction is a measure of the main evaluation index of road machinery compaction quality, but also affects the working characteristics of vibratory roller. In order to make the vibratory compaction always be in the best working state, we must adjust the operating parameters of the roller based on the real-time compaction pressure degree of the compacted material,for the best compaction effect. The paper analyzes the vibration frequency, amplitude, speed and other main working parameters and the relationship between degree of compaction,discusses how to select the main parameters

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Kazakov, O. Yu, and A. G. Savelyev. "Justification of the use of elastically deformable belt in combined compaction equipment for asphalt concrete mixtures." Russian Automobile and Highway Industry Journal 22, no. 3 (2025): 346–55. https://doi.org/10.26518/2071-7296-2025-22-3-346-355.

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Анотація:

Introduction. The process of asphalt concrete compaction is one of the most important in the construction of road surfaces. Traditional compaction methods include the impact of a row of rollers with smooth or vibrating drums. As an alternative, a variant for continuous compaction in the form of combined compaction equipment is proposed. The main working element of which is a drum with an offset axis of rotation, which has a multiple effect on the compacted material. This process is a complex, therefore, the article considers the hypothesis of substantiating the feasibility of using an elastic-

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Gröger, Benjamin, David Römisch, Martin Kraus, et al. "Warmforming Flow Pressing Characteristics of Continuous Fibre Reinforced Thermoplastic Composites." Polymers 14, no. 22 (2022): 5039. http://dx.doi.org/10.3390/polym14225039.

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The paper presents research regarding a thermally supported multi-material clinching process (hotclinching) for metal and thermoplastic composite (TPC) sheets: an experimental approach to investigate the flow pressing phenomena during joining. Therefore, an experimental setup is developed to compress the TPC-specimens in out-of-plane direction with different initial TPC thicknesses and varying temperature levels. The deformed specimens are analyzed with computed tomography to investigate the resultant inner material structure at different compaction levels. The results are compared in terms of

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Mironovs, Viktors, Jekaterina Nikitina, Matthias Kolbe, Irina Boiko, and Yulia Usherenko. "Magnetic Pulse Powder Compaction." Metals 15, no. 2 (2025): 155. https://doi.org/10.3390/met15020155.

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Анотація:

Powder metallurgy (PM) offers several advantages over conventional melt metallurgy, including improved homogeneity, fine grain size, and pseudo-alloying capabilities. Transitioning from conventional methods to PM can result in significant enhancements in material properties and production efficiency by eliminating unnecessary process steps. Dynamic compaction techniques, such as impulse and explosive compaction, aim to achieve higher powder density without requiring sintering, further improving PM efficiency. Among these techniques, magnetic pulse compaction (MPC) has gained notable interest d

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Ma, Zhiyao, Xujiang Wang, Mushen Yu, et al. "Study of Properties of Composite Cementitious Materials with Sulfoaluminate Cement and Solid Waste Based on Compaction Forming Process." Materials 18, no. 9 (2025): 2076. https://doi.org/10.3390/ma18092076.

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The traditional cement compaction process boasts notable advantages such as high strength, durability, and aesthetic appeal. However, compaction forming technology for cement products results in high carbon emissions. Consequently, it is imperative to develop low-carbon strategies for these products. This study investigates the modification of solid waste-based low-carbon sulfoaluminate cementitious material (SSCM) using mineral powder (MP) and steel slag micro powder (SSMP) under compaction forming technology. The results indicate that higher compaction pressure leads to higher early-stage st

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Chen, Qun. "Analysis of Influence Rules of Material Composition on Compaction Characteristic of Asphalt Mixtures Using SGC Tests." Advanced Materials Research 152-153 (October 2010): 1289–92. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.1289.

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Through analysis of densification curve characteristic of gyratory compaction, influence rules of the content of mineral aggregates of all sizes and asphalt on compaction characteristic of mixtures were studied. Test studies show that the mixture having more of asphalt has a faster density-increasing speed, that there is an optimal amount of fine aggregates for optimal compaction, and that an appropriate amount of mineral powder will improve workability of mixtures but overmuch mineral powder will make mixtures dry and hard. Conclusions from this research can provide basis for how to adjust ma

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Powers, J. M., D. S. Stewart, and Herman Krier. "Analysis of Steady Compaction Waves in Porous Materials." Journal of Applied Mechanics 56, no. 1 (1989): 15–24. http://dx.doi.org/10.1115/1.3176038.

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A two-phase continuum mixture model is used to analyze steady compaction waves in porous materials. It is shown that such a model admits both subsonic and supersonic steady compaction waves in response to a piston-driven boundary condition when a Tait equation is used to describe a solid matrix material and a generic static compaction relation is used to describe collapse of the matrix. Parameters for the Tait equation are chosen to match shock and compaction wave data. The model is able to predict compaction wave speed, final pressure, and final volume fraction in porous HMX. The structure of

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Kwunjai, Sararat, Peerapong Jitsangiam, Teewara Suwan, et al. "Crushed Rock Geopolymer as a Future Road Construction Material: An Evaluation on Strength Performance and Compaction Characteristics." Key Engineering Materials 841 (May 2020): 171–76. http://dx.doi.org/10.4028/www.scientific.net/kem.841.171.

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To be more sustainable in the road construction industry, the rock-based geopolymer concept should be applied with an aim to create a geopolymer-based road structural layer. The research program studied on the geopolymer for road construction was newly established at Chiang Mai University, Thailand. This study concentrated in a preliminarily evaluation of strength performance and compaction characteristics of crushed rock-based geopolymer (CR-GP) to partially or totally replace the usage of ordinary Portland cement (OPC) as a road stabilizing agent. The standard crushed rock (CR), complying wi

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Tan, Derek W., Crystal Lihong Yan, Daniel Dante Yeh, and Nina Thakkar-Rivera. "Enterocutaneous fistula formation after cardiac transplantation due to injury from LVAD driveline migration." BMJ Case Reports 16, no. 6 (2023): e254696. http://dx.doi.org/10.1136/bcr-2023-254696.

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Анотація:

A man in his early 20s with heart failure with reduced ejection fraction secondary to non-compaction cardiomyopathy (Titin (TTN) gene mutation positive) was transitioned from left ventricular assist device (LVAD) mechanical support to heart transplantation. Transplantation was successful; however, LVAD explantation resulted in innumerable complications secondary to penetration of the driveline into the peritoneal cavity. He developed an enterocutaneous fistula which led to concurrent malnutrition, poor wound healing, systemic infection, and allograft rejection in a patient less than 1 month af

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Xu, Fan, Huixiong Wang, Xuelian Wu, Zihao Ye, and Hong Liu. "A Density-Dependent Modified Doraivelu Model for the Cold Compaction of Poly (Ether Ketone Ketone) Powders." Polymers 14, no. 6 (2022): 1270. http://dx.doi.org/10.3390/polym14061270.

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Анотація:

The cold compaction of poly (ether ketone ketone) (PEKK) powder was studied by experiments and simulations based on the modified Doraivelu model. Although this model can successfully predict the compaction behavior of metal powders, discussion of the prediction of polymer powders is lacking. Based on the mechanical theory of metal plasticity, the modified Doraivelu model was established by introducing the material parameters m and n. The modified model can predict the compaction density of PEKK powder during cold compaction. A sub-increment method for this constitutive model was then establish

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Bonicelli, Alessandra, Maurizio Crispino, Filippo Giustozzi, and Melanie Shink. "Laboratory Analysis for Investigating the Impact of Compaction on the Properties of Pervious Concrete Mixtures for Road Pavements." Advanced Materials Research 723 (August 2013): 409–19. http://dx.doi.org/10.4028/www.scientific.net/amr.723.409.

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Анотація:

Pervious concrete is a relatively new material, standards and rigorous specifications for construction and placement are therefore still missing. One the one hand, the main characteristic to achieve is a high permeability to allow meteoric water percolate in the pavement and evaporate from the subgrade. On the other hand, developing pavement cementitious mixtures able to retain high void contents and reach significant mechanical performance entails an in-depth analysis of materials and construction practices. Pervious concrete can indeed be placed using a standard paver as for asphalt mixtures

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Chebotnyagin, L. M., V. V. Potapov, N. A. Ivanov, and N. N. Ivanchik. "Compacting nanopowder materials by a pulse pressure generated by expanding plasma channel of a spark ignited by wire electrical explosion." Proceedings of Irkutsk State Technical University 24, no. 6 (2021): 1297–310. http://dx.doi.org/10.21285/1814-3520-2020-6-1297-1310.

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Анотація:

The purpose of the article is to explore the possibilities of powder material compaction by the pressure pulse of an electric explosion of a conductor, establish a functional relationship between the parameters of the pressure pulse and an electrical technological installation for powder material compaction, select the parameters for pulse pressure amplitude and duration adjustment, and specify the design options of the working tool for powder material compaction. Analytical studies have been carried out on the basis of the method of formalized representation of the development of the process

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Kurtyka, Marek, Magdalena Szwaja, Andrzej Piotrowski, Barbara Tora, and Stanislaw Szwaja. "Thermal and Stress Properties of Briquettes from Virginia Mallow Energetic Crops." Materials 15, no. 23 (2022): 8458. http://dx.doi.org/10.3390/ma15238458.

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Анотація:

The article discusses the influence of briquetting/compaction parameters. This includes the effects of pressure and temperature on material density and the thermal conductivity of biomass compacted into briquette samples. Plant biomass mainly consists of lignin and cellulose which breaks down into simple polymers at the elevated temperature of 200 °C. Hence, the compaction pressure, compaction temperature, density, and thermal conductivity of the tested material play crucial roles in the briquetting and the torrefaction process to transform it into charcoal with a high carbon content. The test

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Roodposhti, Hashem Ranjy, Mohammad Kazem Hafizi, and Mohammad Reza Soleymani Kermani. "Ground Penetrating Radar for Water Content and Compaction Evaluation: A Laboratory Test on Construction Material." Journal of Environmental and Engineering Geophysics 25, no. 2 (2020): 169–79. http://dx.doi.org/10.2113/jeeg19-035.

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Анотація:

With the aid of ground penetrating radar (GPR), it is possible to evaluate physical properties of a constructed base layer in engineered structures (pavement, land consolidation projects, etc.) non-destructively, quickly, and accurately. High spatial variations of subsurface water content and deficient compaction can lead to unexpected damage and structural instability. In this research, we established a relationship between the dielectric constant, water content, and compaction, whereby, an interactive relationship between these parameters is presented. To achieve this, large-scale laboratory

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