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Journal articles on the topic 'Particulate Jet'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Hagen, D. E., P. D. Whitefield, and H. Schlager. "Jet engine exhaust particulate characterization." Journal of Aerosol Science 26 (September 1995): S133. http://dx.doi.org/10.1016/0021-8502(95)96974-c.

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2

Boyle, Karleen A. "Evaluating Particulate Emissions from Jet Engines: Analysis of Chemical and Physical Characteristics and Potential Impacts on Coastal Environments and Human Health." Transportation Research Record: Journal of the Transportation Research Board 1517, no. 1 (1996): 1–9. http://dx.doi.org/10.1177/0361198196151700101.

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The results of this study suggest that the range of size of particulate emissions from some jet engines clusters below 1.5 µm and that the emissions contain heavy metals. Therefore, jet exhaust particulates (JEPs) have the potential to adversely affect both the environment and human health. Little is known about the particulate component of jet engine emissions. Baseline physical and chemical data on JEPs were obtained to evaluate their potential effects on the environment. Particles collected from the exhaust stream of two types of jet engines were examined using scanning electron microscopy.

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3

Manzano-Agugliaro, Francisco, and Javier Carrillo-Valle. "Conversion of an existing electrostatic precipitator casing to Pulse Jet Fabric filter in fossil power plants." DYNA 83, no. 195 (2016): 189–97. http://dx.doi.org/10.15446/dyna.v83n195.49723.

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The combustion process of power generation plants originates particulates. There are different technologies to collecting particulate such as electrostatic precipitators (ESPs) or fabric filters. Currently, these ESPs take 25 or 35 years in service and if the performance expectations of their Plants are positives, improving investments required which can adapt to the new particulate emission limits becoming more stringent. This paper analyzes an alternative means great savings in investment costs; Conversion of the existing ESP casing to a Pulse Jet fabric filter. This study also presents a re

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4

Grace, J. R., and C. J. Lim. "Permanent jet formation in beds of particulate solids." Canadian Journal of Chemical Engineering 65, no. 1 (1987): 160–62. http://dx.doi.org/10.1002/cjce.5450650126.

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5

Kartushinsky, Alexander, Efstathios E. Michaelides, Ylo Rudi, and Graham (Gus) Nathan. "RANS modeling of a particulate turbulent round jet." Chemical Engineering Science 65, no. 11 (2010): 3384–93. http://dx.doi.org/10.1016/j.ces.2010.02.037.

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6

Khandelwal, B., J. Cronly, I. S. Ahmed, C. J. Wijesinghe, and C. Lewis. "The effect of alternative fuels on gaseous and particulate matter (PM) emission performance in an auxiliary power unit (APU)." Aeronautical Journal 123, no. 1263 (2019): 617–34. http://dx.doi.org/10.1017/aer.2019.16.

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ABSTRACTThere is a growing interest in the use of alternative fuels in gas turbine engines to reduce emissions. Testing of alternative fuels is expensive when done on a large-scale gas turbine engine. In this study, a re-commissioned small gas turbine auxiliary power unit (APU) has been used to test various blends of Jet A-1, synthetic paraffinic kerosene (SPK) and diesel with as well as eight other novel fuels. A detailed analysis of performance, gaseous emissions and particulate emissions has been presented in this study. It is observed that aromatic content in general as well as the particu

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7

Wang, Rui, and Bin Chen. "Vortex-In-Cell Simulation of Free Falling Particulate Jet." Procedia Engineering 102 (2015): 1612–20. http://dx.doi.org/10.1016/j.proeng.2015.01.297.

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8

Lauk, P., J. H. Rebassa, A. Kartushinsky, S. Tisler, T. Tähemaa, and A. Polonsky. "Assemblage of turbulent jet flows through static particulate media." Proceedings of the Estonian Academy of Sciences 65, no. 3 (2016): 284. http://dx.doi.org/10.3176/proc.2016.3.05.

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9

Hubbard, Joshua A., Meng-Dawn Cheng, Lawrence Cheung, Jared R. Kirsch, Jason M. Richards, and Glenn A. Fugate. "UO2F2 particulate formation in an impinging jet gas reactor." Reaction Chemistry & Engineering 6, no. 8 (2021): 1428–47. http://dx.doi.org/10.1039/d1re00105a.

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10

UCHIYAMA, Tomomi, and Yoshinobu KITANO. "Numerical Analysis of Particulate Jet Generated by Free Falling Particles." Proceedings of the JSME annual meeting 2002.3 (2002): 315–16. http://dx.doi.org/10.1299/jsmemecjo.2002.3.0_315.

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11

Uchiyama, Tomomi. "Numerical analysis of particulate jet generated by free falling particles." Powder Technology 145, no. 2 (2004): 123–30. http://dx.doi.org/10.1016/j.powtec.2004.06.004.

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12

UCHIYAMA, Tomomi, and Yoshinobu KITANO. "Numerical Analysis of Particulate Jet Generated by Free Falling Particles." Transactions of the Japan Society of Mechanical Engineers Series B 69, no. 684 (2003): 1737–45. http://dx.doi.org/10.1299/kikaib.69.1737.

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13

Zhang, Yao Wu. "Experimental Study on the Reverse Cleaning and Regeneration of Diesel Engine's Metal Mesh Filter." Applied Mechanics and Materials 416-417 (September 2013): 1834–39. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.1834.

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This paper puts forward the suitable conditions of high sulphur fuel oil in China wire mesh particle trap counter blowing regeneration technology. The regeneration process is characterized by the filter body is separated from particle combustion, solve the problem of broken filter body and burning-out, at the same time remove the not burning material in the trap. By filtering body regeneration experiment made the counter blowing regeneration scheme, design and optimization of the diesel exhaust particulate trap wire mesh filter body and counter blowing regeneration system. Finally by engine be

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14

Fushimi, Akihiro, Katsumi Saitoh, Yuji Fujitani, and Nobuyuki Takegawa. "Identification of jet lubrication oil as a major component of aircraft exhaust nanoparticles." Atmospheric Chemistry and Physics 19, no. 9 (2019): 6389–99. http://dx.doi.org/10.5194/acp-19-6389-2019.

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Abstract. Jet engine aircraft are ubiquitous and significant sources of atmospheric nanoparticles. Using size-resolved particulate samples collected near a runway of the Narita International Airport, Japan, we clearly demonstrate that organic compounds in the ambient nanoparticles (diameters: < 30 nm) were dominated by nearly intact forms of jet engine lubrication oil. This finding provides direct evidence for the importance of unburned lubrication oil as a source of aircraft exhaust nanoparticles and also has an implication for their environmental impacts near airports and in the upper tro

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15

Baechtold, Marina Samara, Aline Rocha Miquelissa, Viviane Rozeira Crivellaro, Rafaela Scariot, João César Zielak, and Tatiana Miranda Deliberador. "Treatment of peri-implantitis with surface decontamination and particulate bone graft in a smoker patient." RSBO 1, no. 4 (2018): 234. http://dx.doi.org/10.21726/rsbo.v1i4.550.

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Introduction: With the increase of implant-supported rehabilitation, the cases of patients with peri-implantitis become more frequent. Objective: To report the treatment of peri-implantitis by associating techniques of surface decontamination and particulate bone graft. Case report: The treatment was carried through curettage of the granulation tissue, mechanical bone decontamination withbicarbonate jet, chemical decontamination with tetracycline solution, and particulate graft in the place of the bone defect. Conclusion: After 45 postoperative days, the peri-implant tissues were health withou

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16

Marina Samara Baechtold, Aline Rocha Miquelissa, Viviane Rozeira Crivellaro, Rafaela Scariot, João César Zielak, and Tatiana Miranda Deliberador. "Treatment of peri-implantitis with surface decontamination and particulate bone graft in a smoker patient." RSBO 14, no. 4 (2017): 234–07. http://dx.doi.org/10.21726/rsbo.v14i4.672.

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With the increase of implant-supported rehabilitation, the cases of patients with peri-implantitis become more frequent. Objective: To report the treatment of peri-implantitis by associating techniques of surface decontamination and particulate bone graft. Case report: The treatment was carried through curettage of the granulation tissue, mechanical bone decontamination with bicarbonate jet, chemical decontamination with tetracycline solution, and particulate graft in the place of the bone defect. Conclusion: After 45 postoperative days, the peri-implant tissues were health without inflammatio

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17

Chen, Xi, Wenxia Pan, Xian Meng, Kai Cheng, Dong-Yan Xu, and Chengkang Wu. "What do we know about long laminar plasma jets?" Pure and Applied Chemistry 78, no. 6 (2006): 1253–64. http://dx.doi.org/10.1351/pac200678061253.

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Silent and stable long laminar plasma jets can be generated in a rather wide range of working parameters. The laminar flow state can be maintained even if considerable parameter fluctuations exist in the laminar plasma jet or if there is an impact of laterally injected particulate matter and its carrier gas. The attractive special features of laminar plasma jets include extremely low noise level, less entrainment of ambient air, much longer and adjustable high-temperature region length, and smaller axial gradient of plasma parameters. Modeling results show that the laminar plasma jet length in

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18

Arul Kumar, B., and G. Kumaresan. "Abrasive Water Jet Machining of Aluminum-Silicon Carbide Particulate Metal Matrix Composites." Materials Science Forum 830-831 (September 2015): 83–86. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.83.

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Particle Reinforced Metal Matrix Composites (PRMMC's) have proved to be extremely difficult to machine using conventional manufacturing processes due to heavy tool wear caused by the presence of the hard reinforcement. This paper presents details and results of an investigation into the machinability of SiC particle reinforced aluminium matrix composites using Abrasive Water Jet Machining (AWJM). Al-SiC MMC specimens, prepared with stir casting method. The surface roughness of the composite material for these different compositions are examined and compared. The influence of the ceramic partic

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19

UCHIYAMA, Tomomi, and Masaaki NARUSE. "Three-Dimensional Vortex Simulation for Particulate Jet Generated by Free Falling Particles." Proceedings of the JSME annual meeting 2004.2 (2004): 453–54. http://dx.doi.org/10.1299/jsmemecjo.2004.2.0_453.

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20

Uchiyama, Tomomi. "Three-Dimensional Vortex Method for Particulate Jet Induced by Free Falling Particles." Hosokawa Powder Technology Foundation ANNUAL REPORT 12 (2004): 89–92. http://dx.doi.org/10.14356/hptf.02114.

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21

UCHIYAMA, Tomomi, and Masaaki NARUSE. "Three-Dimensional Vortex Simulation for Particulate Jet Generated by Free Falling Particles." Transactions of the Japan Society of Mechanical Engineers Series B 71, no. 707 (2005): 1738–45. http://dx.doi.org/10.1299/kikaib.71.1738.

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22

Uchiyama, Tomomi, and Masaaki Naruse. "Three-dimensional vortex simulation for particulate jet generated by free falling particles." Chemical Engineering Science 61, no. 6 (2006): 1913–21. http://dx.doi.org/10.1016/j.ces.2005.10.039.

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23

Boutoub, Ahmed, Hazem Ettouati, Hmaïed Benticha, and Mohamed Sassi. "Radiative transfer effects of an axisymmetric particulate jet into a cylindrical pipe." Heat and Mass Transfer 43, no. 7 (2006): 613–22. http://dx.doi.org/10.1007/s00231-006-0152-4.

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24

Jianzhong, Lin, Lin Jiang, and Zhu Libing. "Research on the particle dispersion in the particulate two-phase round jet." Applied Mathematics and Mechanics 20, no. 5 (1999): 495–502. http://dx.doi.org/10.1007/bf02463745.

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25

Chan, S. N., and J. H. W. Lee. "Particle tracking modeling of sediment-laden jets." Advances in Geosciences 39 (June 27, 2014): 107–14. http://dx.doi.org/10.5194/adgeo-39-107-2014.

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Abstract. This paper presents a general model to predict the particulate transport and deposition from a sediment-laden horizontal momentum jet. A three-dimensional (3-D) stochastic particle tracking model is developed based on the governing equation of particle motion. The turbulent velocity fluctuations are modelled by a Lagrangian velocity autocorrelation function that captures the trapping of sediment particles in turbulent eddies, which result in the reduction of settling velocity. Using classical solutions of mean jet velocity, and turbulent fluctuation and dissipation rate profiles deri

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26

Huang, P., S. L. Gong, T. L. Zhao, L. Neary, and L. A. Barrie. "GEM/POPs: a global 3-D dynamic model for semi-volatile persistent organic pollutants – Part 2: Global transports and budgets of PCBs." Atmospheric Chemistry and Physics 7, no. 15 (2007): 4015–25. http://dx.doi.org/10.5194/acp-7-4015-2007.

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Abstract. Global transports and budgets of three PCBs were investigated with a 3-D dynamic model for semi-volatile persistent organic pollutants – GEM/POPs. Dominant pathways were identified for PCB transports in the atmosphere with a transport flux peaking below 8 km for gaseous and 14 km for particulate PCB28, and peaking below 4 km for gaseous and 6 km for particulate PCB180. The inter-continental transports of PCBs in the Northern Hemisphere (NH) are dominated in the zonal direction with their route changes regulated seasonally by the variation of westerly jet. The transport pathways from

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27

Gawron, Bartosz, Tomasz Białecki, Anna Janicka, Maciej Zawiślak, and Aleksander Górniak. "Exhaust toxicity evaluation in a gas turbine engine fueled by aviation fuel containing synthesized hydrocarbons." Aircraft Engineering and Aerospace Technology 92, no. 1 (2020): 60–66. http://dx.doi.org/10.1108/aeat-11-2018-0277.

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Purpose The purpose of this paper is to examine the toxicological impacts of exhaust generated during the combustion process of aviation fuel containing synthesized hydrocarbons. Design/methodology/approach Tests on aircraft turbine engines in full scale are complex and expensive. Therefore, a miniature turbojet engine was used in this paper as a source of exhaust gases. Toxicity was tested using innovative BAT–CELL Bio–Ambient Cell method, which consists of determination of real toxic impact of the exhaust gases on the human lung A549 and mouse L929 cells. The research was of a comparative na

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28

Kurzawska, Paula, and Remigiusz Jasiński. "Overview of Sustainable Aviation Fuels with Emission Characteristic and Particles Emission of the Turbine Engine Fueled ATJ Blends with Different Percentages of ATJ Fuel." Energies 14, no. 7 (2021): 1858. http://dx.doi.org/10.3390/en14071858.

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The following article focuses on sustainable aviation fuels, which include first and second generation biofuels and other non-biomass fuels that meet most of environmental, operational and physicochemical requirements. Several of the requirements for sustainable aviation fuels are discussed in this article. The main focus was on researching the alcohol-to-jet (ATJ) alternative fuel. The tests covered the emission of harmful gaseous compounds with the Semtech DS analyzer, as well as the number and mass concentration of particles of three fuels: reference fuel Jet A-1, a mixture of Jet A-1 and 3

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29

Schro¨der, F., A. Petzold, and B. Ka¨rcher. "Ultrafine particulate jet aircraft emissions depending on fuel sulfur content and contrail processing." Journal of Aerosol Science 29 (September 1998): S561—S562. http://dx.doi.org/10.1016/s0021-8502(98)00312-7.

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30

Findanis, Nicholas, and Matthew Southam. "Control and Management of Particulate Emissions using Improved Reverse Pulse-Jet Cleaning Systems." Procedia Engineering 49 (2012): 228–38. http://dx.doi.org/10.1016/j.proeng.2012.10.132.

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31

Hagen, D., P. Whitefield, J. Paladino, M. Trueblood, and H. Lilenfeld. "Particulate sizing and emission indices for a jet engine exhaust sampled at cruise." Geophysical Research Letters 25, no. 10 (1998): 1681–84. http://dx.doi.org/10.1029/97gl03504.

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32

Hagen, D. E., P. D. Whitefield, and H. Schlager. "Particulate emissions in the exhaust plume from commercial jet aircraft under cruise conditions." Journal of Geophysical Research: Atmospheres 101, no. D14 (1996): 19551–57. http://dx.doi.org/10.1029/95jd03276.

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33

Mazel', Yu A., Yu A. Golubev, and V. S. Lapshin. "Combined unit for removal of particulate matter and free water from jet fuel." Chemistry and Technology of Fuels and Oils 24, no. 3 (1988): 129–30. http://dx.doi.org/10.1007/bf00729965.

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34

Jasinski, Remigiusz. "Estimation of particles emissions from a jet engine in real flight." E3S Web of Conferences 100 (2019): 00029. http://dx.doi.org/10.1051/e3sconf/201910000029.

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The article presents the results of particles measurements from a jet engine. Engine parameters were analysed during the actual flight and an attempt was made to map it in stationary tests. Research results were supported by correlation analysis. Based on measurements of particulate matter it was found that the most favourable conditions for particle formation occur during taxiing. Mass distributions were presented and emission factors were determined for three basic phases: taxiing, take-off and approach. The applied research methodology was based on the latest guidelines and was expanded to

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35

LIU, Y., and M. A. F. KENDALL. "NUMERICAL STUDY OF A TRANSIENT GAS AND PARTICLE FLOW IN A HIGH-SPEED NEEDLE-FREE BALLISTIC PARTICULATE VACCINE DELIVERY SYSTEM." Journal of Mechanics in Medicine and Biology 04, no. 04 (2004): 559–78. http://dx.doi.org/10.1142/s0219519404001132.

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A unique biolistic method of vaccination is operated by accelerating particulate vaccines with a high-speed gas jet generated by a convergent-divergent conical nozzle to sufficient momentum to penetrate the outer layer of human skin. The targeted cells elicit an immunological response. In this paper, Computational Fluid Dynamics (CFD) is utilized to simulate the operation of a prototype biolistics delivery system. The key features of transient gas dynamics and gas-particle interaction are discussed.

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36

Neuber, Gregor, Carlos E. Garcia, Andreas Kronenburg, et al. "Joint experimental and numerical study of silica particulate synthesis in a turbulent reacting jet." Proceedings of the Combustion Institute 37, no. 1 (2019): 1213–20. http://dx.doi.org/10.1016/j.proci.2018.06.074.

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37

Mann, Garrett W., Steven J. Eckels, and Byron W. Jones. "Analysis of particulate size distribution and concentrations from simulated jet engine bleed air incidents." HVAC&R Research 20, no. 7 (2014): 780–89. http://dx.doi.org/10.1080/10789669.2014.950922.

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38

TAKANA, Hidemasa, Kazuhiro OGAWA, Tetsuo SHOJI, and Hideya NISHIYAMA. "506 Advancement of Micro/Nano Particulate Supersonic Jet Process Assisted by Electrostatic Force(2)." Proceedings of the Fluids engineering conference 2007 (2007): _506–1_—_506–4_. http://dx.doi.org/10.1299/jsmefed.2007._506-1_.

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39

TAKANA, Hidemasa, Kazuhiro OGAWA, Tetsuo SHOJI, and Hideya NISHIYAMA. "506 Advancement of Micro/Nano Particulate Supersonic Jet Process Assisted by Electrostatic Force(1)." Proceedings of the Fluids engineering conference 2007 (2007): _506—a_. http://dx.doi.org/10.1299/jsmefed.2007._506-a_.

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40

Chang, Haoming, Yao-Jhen Yang, Chun-Ming Hsu, Cheng-Che Hsu, I.-Chun Cheng, and Jian-Zhang Chen. "Atmospheric-Pressure-Plasma-Jet Particulate TiO2Scattering Layer Deposition Processes for Dye-Sensitized Solar Cells." ECS Journal of Solid State Science and Technology 3, no. 10 (2014): Q177—Q181. http://dx.doi.org/10.1149/2.0021410jss.

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41

Seekkuarachchi, Isuru N., Kuniaki Tanaka, and Hidehiro Kumazawa. "Dispersion mechanism of nano-particulate aggregates using a high pressure wet-type jet mill." Chemical Engineering Science 63, no. 9 (2008): 2341–66. http://dx.doi.org/10.1016/j.ces.2008.01.004.

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42

Lee, Seung Young, Jiwon In, Myong-Soo Chung, and Sea C. Min. "Microbial decontamination of particulate food using a pilot-scale atmospheric plasma jet treatment system." Journal of Food Engineering 294 (April 2021): 110436. http://dx.doi.org/10.1016/j.jfoodeng.2020.110436.

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43

Vander Wal, Randy L., Victoria M. Bryg, and Chung-Hsuan Huang. "Chemistry characterization of jet aircraft engine particulate matter by XPS: Results from APEX III." Atmospheric Environment 140 (September 2016): 623–29. http://dx.doi.org/10.1016/j.atmosenv.2016.05.039.

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44

Longmire, Ellen K., and John K. Eaton. "Structure of a particle-laden round jet." Journal of Fluid Mechanics 236 (March 1992): 217–57. http://dx.doi.org/10.1017/s002211209200140x.

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The interaction of solid particles with the temporal features of a turbulent flow has direct relevance to problems in particle and spray combustion and the processing of particulate solids. The object of the present study was to examine the behaviour of particles in a jet dominated by vortex ring structures. An axisymmetric air jet laden with 55 μm glass particles was forced axially with an acoustic speaker to organize the vortex ring structures rolling up in the free shear layer downstream of the nozzle exit. Visualization studies of forced and unforced flow with Reynolds number of the order

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45

Jasiński, Remigiusz, Paula Kurzawska, and Radosław Przysowa. "Characterization of Particle Emissions from a DGEN 380 Small Turbofan Fueled with ATJ Blends." Energies 14, no. 12 (2021): 3368. http://dx.doi.org/10.3390/en14123368.

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The fine particulate matter (PM) emitted from jet aircraft poses a serious threat to the environment and human health which can be mitigated by using biofuels. This paper aims to quantify PM emissions from a small turbofan fueled with the alcohol to jet (ATJ) synthetic kerosene and its various blends (5%, 20%, and 30% of ATJ) with Jet A-1 fuel. Emissions from a turbofan engine (DGEN 380) with a high bypass ratio, applicable in small private jets, were studied. Among the four fuels tested, the PM-number emission index (EIN) was the lowest for the ATJ 30% blend. EIN for ATJ 30% dropped from 1.1

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46

Yin, Zhaoqin, and Huijie Liu. "Numerical simulation of nanoparticles diffusion and coagulation in a twin-jet via a TEMOM method." International Journal of Numerical Methods for Heat & Fluid Flow 24, no. 6 (2014): 1312–20. http://dx.doi.org/10.1108/hff-04-2013-0143.

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Purpose – The purpose of this paper is to study nanoparticles diffusion and coagulation processes in a twin-jet. Design/methodology/approach – Large eddy simulation (LES) and Taylor-series expansion moment method (TEMOM) are employed to deal with a nanoparticle-laden twin-jet flow. Findings – The numerical results show that the interaction of the two jets and turbulence eddy structures rolling-up, paring and shedding in flow sharply affects particles number concentration. Particle diameter grows quickly at the interfaces of jets. Coagulation shows more obvious effect at initial stage than that

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47

Zhukov, Vladimir P., Dmitriy А. Osipov, Vadim E. Mizonov, and Tomasz Wyleciał. "MODELING AND CALCULATION OF GRINDING AND CLASSIFICATION OF MIXTURE OF DISSIMILAR COMPONENTS IN CLOSED MILLING CIRCUIT." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 62, no. 9 (2019): 102–9. http://dx.doi.org/10.6060/ivkkt.20196209.5934.

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It is shown that the developed earlier model of joint grinding of dissimilar particulate solids based on the discrete models of the Boltzmann equation does not take into account the possible size and density classification of particles and the operating of technological equipment in a closed milling circuit. It is substantiated that the problem of improving the efficiency of separation of mixture components, based on the analysis of their treatment in a closed milling circuit is an actual problem in the field. Theoretical investigations were based on the discrete models of the Boltzmann equati

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48

Saitoh, Katsumi, Koichiro Sera, Koyomi Nakazawa, and Osamu Nagafuchi. "Elemental analysis of particles emitted from aircraft using in-vacuum PIXE." International Journal of PIXE 29, no. 03n04 (2019): 89–97. http://dx.doi.org/10.1142/s0129083519500190.

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To comprehend the elemental characterization of the particles emitted from an aircraft, we performed element analysis using in-vacuum PIXE for particles emitted from the carbon disc brakes and tires in addition to the exhaust particles produced by the jet engine. As for the elemental characteristics of aircraft source particulate matter, engine reversers mainly consisted of Al, Si, Ca, and Fe, and also included Ti, Cr, Mo, and W. The disc brakes mainly contained Si, Ca, and Fe, and also contained S, K, Ti, Cr, Ni, and Cu. In tires, Na, Al, Si, Ca, Fe, and Zn were mainly found, and S, K, and Ti

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49

Song, Xin-Yi, Qing-Chang Lu, and Zhong-Ren Peng. "Spatial Distribution of Fine Particulate Matter in Underground Passageways." International Journal of Environmental Research and Public Health 15, no. 8 (2018): 1574. http://dx.doi.org/10.3390/ijerph15081574.

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The unfavorable locations of underground infrastructures and poor ventilation facilities can result in the deterioration of enclosed air quality. Some researchers have studied air quality and ventilation measures in different types of underground buildings. However, few studies have investigated the pollution in pedestrian passageways connecting underground structures. Hence, in this paper, we attempted to investigate the spatial distribution of fine particulate matter (PM2.5) in underground passageways. First, measurements were designed and conducted in a pedestrian passageway beneath the Sha

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50

Hamatani, G., and M. Ramulu. "Machinability of High Temperature Composites by Abrasive Waterjet." Journal of Engineering Materials and Technology 112, no. 4 (1990): 381–86. http://dx.doi.org/10.1115/1.2903346.

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An experimental investigation was conducted on the machinability of particulate reinforced ceramic TiB2/SiC and metal SiC/Al matrix composites by an abrasive water jet. Both piercing and slot cutting experiments were conducted to determine the influence abrasive waterjet machining has on the material. Machining performance was reported by both cut quality as measured by taper and machined surface characteristics. Based on these preliminary experiments, abrasive waterjet machining seems to be a satisfactory machining method for both metal and ceramic matrix composites.

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