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Journal articles on the topic 'Assist Gas'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Kim, Ryoonhan, Su-Jin Lee, Jungsoo Choi, Dongsig Shin, and Jong-Do Kim. "Effect of Process Variables for Reducing Assist Gas Pressure in 50 mm-Thick Stainless Steel Underwater Laser Cutting." Applied Sciences 12, no. 19 (2022): 9574. http://dx.doi.org/10.3390/app12199574.

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While dismantling nuclear power plants, the reactor vessel internal is cut underwater using mechanical and thermal cutting. In laser thermal cutting, assist gas must be used to remove melted metal; consequently, a large number of radioactive aerosols can be generated. To reduce the generation of aerosols, the assist gas pressure should be lowered. However, below the pressure limit, the molten metal is not well-removed from the cut surface and fails to cut. In this study, an assist gas visualization experiment was performed to find a condition for the gas to flow well inside the cut surface, ev

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2

Omoluwabi-O, Omoluwabi-O., Okeoghene Faith Okeoghene Faith, Okologume Okologume, and Wilfred Chinedu Wilfred Chinedu. "Economic Analysis of the Comparative Advantage of Retrofitting a Gas Assist Flare to an Air-Assist Flare for Smokeless Flare." International Journal of Advances in Engineering and Management 7, no. 4 (2025): 785–94. https://doi.org/10.35629/5252-0704785794.

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This research delves into exploring alternatives which have comparative economic advantage to un-automated gas-assist flare systems, whilst eliminating or mitigating the adverse consequence of the use of high-pressure gas for enhancing smokeless flaring and to optimize flare systems. According to the Ringelmann theory, unabated smoky flares based on stipulated timeliness should be recorded as flare incidents. It is this undesirability of Oil/Gas facilities to generate smoky flares that has endeared them to providing the most available flare assist systems in their facility. A gas processing fa

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3

Carpenter, Chris. "Lean Gas-Flare-Tip Technology Reduces Emissions in the Gulf of Thailand." Journal of Petroleum Technology 76, no. 04 (2024): 64–66. http://dx.doi.org/10.2118/0424-0064-jpt.

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_ This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 216098, “Revolutionizing Sustainability: Achieving Net-Zero Emissions With Lean Gas-Flare-Tip Technology Breakthrough in the Gulf of Thailand,” by Nunthachai Amarutanon, Boonyakorn Assavanives, and Kantkanit Watanakun, PTTEP, et al. The paper has not been peer reviewed. _ In the complete paper, the authors describe an extremely low-BTU (ELBTU) flare-tip technology designed to help the oil and gas industry achieve net-zero targets. The operator embarked on a joint research and development project

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4

Riveiro, Antonio, Félix Quintero, Mohamed Boutinguiza, et al. "Laser Cutting: A Review on the Influence of Assist Gas." Materials 12, no. 1 (2019): 157. http://dx.doi.org/10.3390/ma12010157.

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Assist gas plays a central role in laser fusion cutting. In this work, the aerodynamic interactions between the assist gas and the workpiece are reviewed. An insight into those phenomena that hinder the cutting quality and performance is provided. These phenomena include shock waves, choking, boundary layer separation, etc. The most relevant and promising attempts to overcome these common problems related to the gas dynamics are surveyed. The review of the current scientific literature has revealed some gaps in the current knowledge of the role of the assist gas dynamics in laser cutting. The

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5

Shuja, S. Z., and B. S. Yilbas. "Gas-assisted laser repetitive pulsed heating of a steel surface." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 212, no. 8 (1998): 741–57. http://dx.doi.org/10.1243/0954406981521484.

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The present study is carried out to investigate the effect of the assist gas jet on the thermal integration due to repetitive pulsed laser heating. Air is considered as the assist gas, which impinges coaxially with the laser beam and orthogonal to a steel surface. The low Reynolds number k-ε model is introduced, based on previous studies, to account for the turbulence. A numerical scheme using the control volume approach is employed to solve the two-dimensional axisymmetric governing equations of flow and heat conduction. The transport properties of the assist gas and of the solid substrate ar

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6

Reichenzer, Frieder, Stefan Dörr, and Alois Herkommer. "Transient simulation of laser beam propagation through turbulent cutting gas flow." Advanced Optical Technologies 8, no. 2 (2019): 129–34. http://dx.doi.org/10.1515/aot-2018-0070.

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Abstract For many laser machining applications, an assist gas is required. However, for applications with high pressure or temperature gradients, the density of the assist gas is not homogeneous. Thus, the laser propagation is influenced by the density properties within the turbulent gas. In this article, an overview and example results of the influence of a nozzle geometry on the light propagation in two dimensions are presented.

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7

ICHINOSE, Hiroaki, and Minoru YOSHIDA. "Laser Microfabrication of Metal Foil Without Assist Gas." Review of Laser Engineering 50, no. 5 (2022): 265. http://dx.doi.org/10.2184/lsj.50.5_265.

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8

Ahn, J. M., H. Y. Kim, and T. H. Kim. "Determination of Optimum Parameters Effect on Kerf Width of 316L Stainless Steel Tube in Nd:YAG Laser Cutting." Materials Science Forum 475-479 (January 2005): 277–80. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.277.

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The effects of following four factors, which are laser power, assist gas pressure, cooling rate and scanning speed on the quality characteristics of laser cut 316L stainless steel tubes have been studied. 24 full factorial design and central composite design were used to evaluate optimum condition of process parameters. Regression analysis was used to develop empirical models for the combined effects of the independent process parameters on laser cut quality. As the results, it was observed that laser power, assist gas pressure and scanning speeds did the major effects on kerf width. The small

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9

Toshihide, Hanari, Muramatsu Toshiharu, Yamashita Masanori, and Sakakibara Jun. "1135 INFLUENCE OF KERF WIDTHS TO AN ASSIST GAS FLOW IN LASER CUTTING." Proceedings of the International Conference on Jets, Wakes and Separated Flows (ICJWSF) 2013.4 (2013): _1135–1_—_1135–5_. http://dx.doi.org/10.1299/jsmeicjwsf.2013.4._1135-1_.

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10

Shizuka, Hiroo, Katsuhiko Sakai, and Yasuo Suzuki. "The Assist Effect of Nitrogen Atmosphere on MQL Cutting Performance." Key Engineering Materials 407-408 (February 2009): 321–24. http://dx.doi.org/10.4028/www.scientific.net/kem.407-408.321.

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This paper investigates the effects of using nitrogen gas on Mist cutting. In this study we tried to improve the cooling effect of mist on cutting by using N2 gas to assist cooling. As a result, tool breakage was prevented when using carbide tools and a large reduction in tool wear was confirmed when using cermet tools. Our conclusion is that N2 gas assisted mist cutting reduces oxidation wear, which means that the cutting characteristics are better than in conventional mist cutting.

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11

Low, D. K. Y., L. Li, and P. J. Byrd. "Hydrodynamic Physical Modeling of Laser Drilling." Journal of Manufacturing Science and Engineering 124, no. 4 (2002): 852–62. http://dx.doi.org/10.1115/1.1510518.

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Laser drilling is a complex process that involves material removal through both vaporization and hydrodynamic melt ejection. The process is further complicated when an assist gas is incorporated, which is often the case under most practical drilling conditions. It is the intent of this article to investigate these effects through both experiments and theoretical analysis. The analysis accounts for conduction in the solid, vaporization, vaporization-induced recoil pressure melt ejection, convection due to the melt flow as well as the effects of using an O2 assist gas, which includes the effecti

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12

Gondal, Irfan Ahmad. "Offshore renewable energy resources and their potential in a green hydrogen supply chain through power-to-gas." Sustainable Energy & Fuels 3, no. 6 (2019): 1468–89. http://dx.doi.org/10.1039/c8se00544c.

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Offshore renewable energies are proposed to generate green hydrogen through PEM electrolysis. Power-to-gas process can be used to store hydrogen gas in synergy with existing oil/gas exploration companies. Offshore CCS is thereafter used to assist in the production of synthetic natural gas entirely offshore.

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13

Maruo, Hiroshi, Isamu Miyamoto, and Yoshiaki Arata. "The role of assist gas in CO2 laser welding." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 3, no. 2 (1985): 276–83. http://dx.doi.org/10.2207/qjjws.3.276.

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14

Farooq, K., and A. Kar. "Removal of laser-melted material with an assist gas." Journal of Applied Physics 83, no. 12 (1998): 7467–73. http://dx.doi.org/10.1063/1.367509.

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15

MATSUMURA, Shungo, Takahiro KIWATA, and Yoshihiro YAMAGUCHI. "Flow Analysis of Assist Gas in Laser Cutting Slot." Proceedings of Mechanical Engineering Congress, Japan 2017 (2017): S0520603. http://dx.doi.org/10.1299/jsmemecj.2017.s0520603.

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16

Liu, S. J., and Y. C. Wu. "Factors Affecting the Stability of Gas Penetration in Gas Assist Injection Molded Bifurcation Parts." International Polymer Processing 15, no. 3 (2000): 297–303. http://dx.doi.org/10.3139/217.1600.

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17

Wang, Hong, Yaowu Shi, Shuili Gong, and Aiqin Duan. "Effect of assist gas flow on the gas shielding during laser deep penetration welding." Journal of Materials Processing Technology 184, no. 1-3 (2007): 379–85. http://dx.doi.org/10.1016/j.jmatprotec.2006.12.014.

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18

Udeh, A. I., I. M. Okwo, and C. E. Nwoha. "Relationship Between Intangible Assets and Value of Oil and Gas Firms in Nigeria." International Journal of Advanced Finance and Accounting 3, no. 5 (2022): 15–27. https://doi.org/10.5281/zenodo.7333480.

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<strong>ABSTRACT</strong> <em>The main objective of the study is to evaluate relationship between intangible assets and value of oil and gas firms in Nigeria. The specific objectives of the study are to, analyze the relationship between goodwill and net assets of oil and gas firms in Nigeria. Examine the relationship between software and net assets of oil and gas firms in Nigeria. Ascertain the relationship between brands/trademarks and net assets value of oil and gas firms in Nigeria. A sample of five (5) oil and gas firms listed on Nigeria Stock Exchange during the period of 2011 to 2020 wer

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19

Okamoto, Yasuhiro, Yoshiyuki Uno, and Hiroshi Suzuki. "Effect of Nozzle Shape on Micro-Cutting Performance of Thin Metal Sheet by Pulsed Nd: YAG Laser." International Journal of Automation Technology 4, no. 6 (2010): 510–17. http://dx.doi.org/10.20965/ijat.2010.p0510.

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In precision laser cutting, the generation of dross can be reduced by using a high-pressure assist gas flow. However, our previous work made it clear that, for a conventional convergent nozzle, the pressure of assist gas on a workpiece is reduced to less than half of the cylinder gas pressure because of the generation of Mach Shock Disk. Furthermore, the removal of material from the micro-kerf becomes difficult since the fluidity of molten material is low in the narrow kerf. Therefore, nozzle shapes were investigated to improve the removal of material from the micro-kerf, and their effect on t

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20

Rodden, W. S. O., S. S. Kudesia, D. P. Hand, and J. D. C. Jones. "Use of “assist” gas in the laser drilling of titanium." Journal of Laser Applications 13, no. 5 (2001): 204–8. http://dx.doi.org/10.2351/1.1404415.

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21

KAI, Shoya, and Masanori KUNIEDA. "Study on effect of assist gas in electrolyte jet machining." Journal of The Japan Society of Electrical Machining Engineers 47, no. 115 (2013): 97–103. http://dx.doi.org/10.2526/jseme.47.97.

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22

Cekic, Ahmet, Derzija Begic-Hajdarevic, Malik Kulenovic, and Alma Omerspahic. "CO2 Laser Cutting of Alloy Steels Using N2 Assist Gas." Procedia Engineering 69 (2014): 310–15. http://dx.doi.org/10.1016/j.proeng.2014.02.237.

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23

Wall, E., G. Simm, and D. Moran. "Developing breeding schemes to assist mitigation of greenhouse gas emissions." Animal 4, no. 3 (2010): 366–76. http://dx.doi.org/10.1017/s175173110999070x.

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24

AIKAWA, Chikara, Kunimitsu TAKAHASHI, Toshio KASAI, and Tomoyuki YONEYAMA. "Effect of SF6 Assist Gas on Silicon Wafer Laser Processing." Journal of the Japan Society for Precision Engineering 73, no. 10 (2007): 1132–36. http://dx.doi.org/10.2493/jjspe.73.1132.

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25

Gimbel, A. A., E. Flores, A. Koo, G. García-Cardeña, and J. T. Borenstein. "Development of a biomimetic microfluidic oxygen transfer device." Lab on a Chip 16, no. 17 (2016): 3227–34. http://dx.doi.org/10.1039/c6lc00641h.

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A microfluidic respiratory assist device is demonstrated, with blood gas transfer as a function of the size and number of transfer layers demonstrated, along with anti-coagulation and gas exchange properties of a confluent endothelial lining of the blood compartment.

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26

Liu, Shih-Jung, and I.-Ta Chang. "Surface Roughness at the Melt/Gas Transition Sites of Gas-Assist Injection Molded Thermoplastic Composites." Journal of Reinforced Plastics and Composites 21, no. 3 (2002): 217–31. http://dx.doi.org/10.1177/0731684402021003107.

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27

Mon, Thet Thet, Khairul F. Muhamad, Asnul H. Ahmad, and Zazuli Mohid. "Experimental Micromachining of Silicon with Nd-YAG Laser." Applied Mechanics and Materials 83 (July 2011): 244–48. http://dx.doi.org/10.4028/www.scientific.net/amm.83.244.

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This research centers on experimental laser-micromachining of silicon using solid state pulsed Nd:YAG laser. The laser is equipped with 3-axis controllers with resolution of 1 µm. The main objective is to find out the possibility of using this laser machining system to fabricate a micro feature on silicon. Simple straight lines were generated on silicon surface. The two process parameters – the laser traverse speed and pulse energy- were considered in the experimental design. Two forms of experiments were carried out: (1) processing with air assist gas and (2) processing without the assist gas

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28

Ley, S. Jill. "The Thoratec Ventricular Assist Device: Nursing Guidelines." AACN Advanced Critical Care 2, no. 3 (1991): 529–44. http://dx.doi.org/10.4037/15597768-1991-3017.

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The Thoratec ventricular assist device (VAD) offers a final hope for survival in patients with severe cardiogenic shock unresponsive to conventional therapy. In select patients, these pneumatically activated prosthetic ventricles maintain organ perfusion pending recovery of the native heart or cardiac transplant. A detailed review of Thoratec VAD operation, its impact on the circulatory pathway and hemodynamic monitoring, and troubleshooting guidelines specific to these patients are presented. A nursing diagnosis framework assists with the identification and management of problems such as impa

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29

Wu, Chao, Kang Song, Shaohua Li, and Hui Xie. "Impact of Electrically Assisted Turbocharger on the Intake Oxygen Concentration and Its Disturbance Rejection Control for a Heavy-duty Diesel Engine." Energies 12, no. 15 (2019): 3014. http://dx.doi.org/10.3390/en12153014.

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The electrically assisted turbocharger (EAT) shows promise in simultaneously improving the boost response and reducing the fuel consumption of engines with assist. In this paper, experimental results show that 7.8% fuel economy (FE) benefit and 52.1% improvement in transient boost response can be achieved with EAT assist. EAT also drives the need for a new feedback variable for the air system control, instead of the exhaust recirculation gas (EGR) rate that is widely used in conventional turbocharged engines (nominal system). Steady-state results show that EAT assist allows wider turbine vane

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30

Pinchin, J., and A. B. Mitchell. "SEISMIC AVO STUDIES ASSIST IN THE MAPPING OF A PERMIAN GAS SAND AT KERNA FIELD, COOPER BASIN." APPEA Journal 31, no. 1 (1991): 244. http://dx.doi.org/10.1071/aj90018.

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Kerna is a gas field within the south-central part of the Cooper Basin, 12 km southwest of the Dullingari Field and adjacent to the border of South Australia and Queensland. The trap is a domal anticline containing gas structurally trapped within the Early Permian Patchawarra Formation. The overlying Permian Epsilon Formation, above intervening shale, also contains gas, which may be stratigraphically trapped or restricted by permeability barriers around the southern and western flanks of the field.Seismic reflection amplitudes can be used to map the extent of the Epsilon gas sand. Seismic mode

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31

Zhang, Yuan Shan, Zhi Yong Yang, Guo Sheng Wu, and Jing Zhang. "Mechanical Design of Power Assist Exoskeleton Suit NES-3 Based on Backstay Cable." Applied Mechanics and Materials 40-41 (November 2010): 1016–21. http://dx.doi.org/10.4028/www.scientific.net/amm.40-41.1016.

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Exoskeleton suit is a kind of human-machine robot, which combines the human’s intelligence with the power of mechanism. NES-3 is a pure motor actuated power assist exoskeleton suit. A special mechanical design using backstay cable for transmission system is proposed in the paper. The design can depart the motor from its control object which make the leg of NES-3 is very light and reduces the power cosumption of the operator. An extend gas spring is used in the hip joint to conquer the rotation torque of the load. A compress gas spring is used in the knee joint which can make the knee joint ben

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32

Liu, S. J., C. Y. Ho, J. H. Chang, and S. W. Hung. "Optimization of the Weldline Strength in Gas-assist Injection Molded Thermoplastic." International Polymer Processing 14, no. 2 (1999): 191–95. http://dx.doi.org/10.3139/217.1534.

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33

YOSHIDA, Kotaro, Naoto TANAKA, Syogo IZUMIDA, Chiharu ISHII, and Kyota TAKAMI. "Verification for Effectiveness of Assist Suit via Analysis of Expired Gas." Proceedings of the Bioengineering Conference Annual Meeting of BED/JSME 2018.30 (2018): 2D10. http://dx.doi.org/10.1299/jsmebio.2018.30.2d10.

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34

Mezzani, Alessandro, Massimo Pistono, Piergiuseppe Agostoni, et al. "Exercise gas exchange in continuous-flow left ventricular assist device recipients." PLOS ONE 13, no. 6 (2018): e0187112. http://dx.doi.org/10.1371/journal.pone.0187112.

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35

Giorleo, L., E. Ceretti, and C. Giardini. "Ti Surface Laser Polishing: Effect of Laser Path and Assist Gas." Procedia CIRP 33 (2015): 446–51. http://dx.doi.org/10.1016/j.procir.2015.06.102.

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36

Caccamo, M. A., R. K. Hames, A. Hamel, B. Nelson, R. John, and P. M. Eckman. "275 Left Ventricular Assist Device Speed Optimization Utilizing Gas Exchange Analysis." Journal of Heart and Lung Transplantation 30, no. 4 (2011): S97. http://dx.doi.org/10.1016/j.healun.2011.01.282.

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37

Shimozato, Yuya, Sou Saito, Hidehisa Yoshida, Takayoshi Kamada, and Masao Nagai. "A New Braking Assist System Based on Driver's Gas Pedal Operation." Proceedings of the Transportation and Logistics Conference 2003.12 (2003): 211–14. http://dx.doi.org/10.1299/jsmetld.2003.12.211.

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38

von Segesser, LK, M. Pasic, M. Tönz, M. Lachat, B. Leskosek, and MI Turina. "Use of an intravascular gas exchanger: is low systemic heparinization safe?" Perfusion 8, no. 6 (1993): 449–58. http://dx.doi.org/10.1177/026765919300800603.

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Extracorporeal membrane oxygenation (ECMO) is a cumbersome procedure. Alternatively, mechanical lung assist can be realized with an intravascular gas exchanger (IVOX). To assess the degree of initial anticoagulation required during intravascular lung assist, we evaluated two regimens of systemic heparinization in 10 bovine experiments. The animals were randomly assigned to two groups with either full systemic heparinization (heparin loading dose 300 IU/kg bodyweight; activated coagulation time (ACT) > 480 s) or low systemic heparinization (heparin loading dose 100 IU/kg bodyweight; ACT >

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39

Ryoken, Haruki, Isao Sakaguchi, Takeshi Ohgaki, et al. "Effect of Al-Doping into Zinc Oxide Films Prepared by Pulsed Laser Deposition Method with Various Oxidation Assists." Key Engineering Materials 301 (January 2006): 75–78. http://dx.doi.org/10.4028/www.scientific.net/kem.301.75.

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The defect structure of undoped and Al-doped ZnO films deposited by pulse laser deposition was investigated to understand the charge compensation mechanism in those films. Particularly, the effect of oxidation assist, i.e., O2 gas or oxygen radicals, on the defect structure of the resultant films was examined. The examination indicated that the defect structure of undoped ZnO was not affected by the oxidation assist, whereas the properties of Al-doped ZnO obviously varied with the method of oxidation assist. An analyses of oxygen diffusion in these films revealed that Al-doping enhanced format

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40

He, Dong Jue, Tadahiko Shinshi, and Takahiro Nakai. "Development of a Lens Driving Maglev Actuator for Laser Beam Off-Axis Cutting and Deep Piercing." Key Engineering Materials 523-524 (November 2012): 774–79. http://dx.doi.org/10.4028/www.scientific.net/kem.523-524.774.

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In laser beam cutting and laser piercing process, the machining speed and quality are very sensitive to the flow of assist gas and laser beam focusing position. In order not only to improve the cutting speed and the removal capability of the molten material and to save the consumption of the gas flow in laser beam cutting, but also to realize high speed piercing of high aspect-ratio holes, a magnetic-levitated (maglev) lens driving actuator was proposed and fabricated. The actuator can drive the lens to achieve real-time positioning control of the relative radial displacement between the lens

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41

Rossaint, R., K. Slama, K. Lewandowski, et al. "Extracorporeal Lung Assist with Heparin-Coated Systems." International Journal of Artificial Organs 15, no. 1 (1992): 29–34. http://dx.doi.org/10.1177/039139889201500106.

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Extracorporeal lung assist (ELA) has been recommended for the treatment of ARDS if conventional therapy fails. However, the need for nearly complete anticoagulation is a major risk factor for hemorrhagic complications. We describe our experience with 13 ARDS patients treated with ELA using heparin-coated systems (Carmeda). Maintaining partial thromboplastin time and activated clotting time within or close to the normal range, even major surgery (20 thoracotomies and 2 laparotomies) could be performed without undue bleeding complications related to anticoagulation during extracorporeal support.

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42

Calzada-Orihuela, Gustavo, Gustavo Urquiza-Beltrán, Jorge A. Ascencio, and Gerardo Reyes-Salgado. "Implementing Genetic Algorithms to Assist Oil and Gas Pipeline Integrity Assessment and Intelligent Risk Optimization." International Journal of Organizational and Collective Intelligence 7, no. 4 (2017): 63–82. http://dx.doi.org/10.4018/ijoci.2017100104.

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Oil and gas industry, worldwide, needs to monitor, control and assess the elements that are involved in the general oil transportation and production processes. However, these processes are not risk free. The project proposes an intelligent support system that provides optimized projections for effective risk management. The project focuses on the development of a set of Genetic Algorithms (GAs), a branch of AI systems that assists to optimize the usage and distribution of resources. GAs will reduce the latent risks and potential dangers as much as possible. The main purpose is to minimize the

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43

Mon, Thet Thet, Yap Tze Chuen, Noriah Bidin, and Mahadzir. "On Generation of Micro-Feature on Silicon with an Industrial Laser." Materials Science Forum 773-774 (November 2013): 661–69. http://dx.doi.org/10.4028/www.scientific.net/msf.773-774.661.

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Generation of a micro feature on mono-crystalline silicon surface using an industrial laser is presented. The main objective is to investigate the capability of the industrial laser, Nd:YAG, in generating a micro-feature on silicon surface. The unpolished silicon surface was irradiated with the Nd:YAG laser beam of controlled pulse width and power. In phase 1, the irradiations were done without incorporating an assist gas into the process. In phase 2, the compressed air maintaining its pressure at 4 bars, was supplied as an assist gas during laser irradiation. Design of experiment was adopted

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44

Alajmi, Amer, Fnyees Alajmi, Ahmed Alrashidi, Naser Alrashidi, and Nor Mariah Adam. "Application of Ultrasonic Atomization on a Micro Jet Engine Using Biofuel for Improving Performance." Processes 9, no. 11 (2021): 1963. http://dx.doi.org/10.3390/pr9111963.

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Jet engines are commonly used in aeronautical applications, and are one of the types of gas turbine engines. The circulation of air releases heat energy to expand the volume of hot fluids and impact the turbine wheel to generate power of hot gases. The present study investigates the potential of using ultrasonic atomization technology to assist in the combustion process. An experimental rig was set up to determine the performance of jet engines using ultrasonic droplets. A gas analyzer was used to measure various greenhouse emissions of exhaust gas. The performance of the engine was tested und

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45

Stephen, Chidozie Duru. "Regression Formulas for the Prediction of Optimum Tank Capacities of Gas Carrier Ships from Exiting Ships Data." Advances in Engineering Design Technology 4, no. 3 (2022): 31–40. https://doi.org/10.5281/zenodo.7491631.

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<em>This paper present 18 regression equations for the computation of optimum gas tank capacity for a wide range of gas carrier vessels. This presentation is to ensure that the optimum total gas carrying capacity of a projected or existing gas carrier vessel with known principal dimensions is adequately computed. The method is authenticated by comparing the tank capacities it predicts,  with that of 15 randomly selected existing gas carrier ships. The method presented is important to assure that a projected design of this type of ship meet owner’s requirement regarding total gas tan

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46

Smitt, Chris, D. Ife, Joanne Vanderzalm, Peter Dillion, and Shaun Davidge. "Aquifer recharge to assist in the management of produced CSG water." APPEA Journal 52, no. 2 (2012): 692. http://dx.doi.org/10.1071/aj11106.

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Santos is producing natural gas and expanding its CSG operations in the Surat and Bowen Basins, Queensland for the Gladstone Liquefied Natural Gas (GLNG) project. During the project, it has been estimated that a total of ∼340 GL of associated water could be produced from gas extraction in three CSG fields. Beneficial re-use of this water is a high priority and one option involves treating the water and re-injecting it into the water supply aquifers in the Great Artesian Basin. In the past 100 years, groundwater pressures in the Gubberamunda Sandstone aquifer, Roma’s main town water supply, hav

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Rauf, A., A. Hussain, R. Akhter, W. A. Farooq, and M. Aslam. "Role of Combustion Energy in Laser Cutting of Austenitic Stainless Steel." Key Engineering Materials 442 (June 2010): 81–87. http://dx.doi.org/10.4028/www.scientific.net/kem.442.81.

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Cutting of austenitic stainless steel of 0.5mm and 2mm thickness with CO2 laser has been carried out using oxygen, nitrogen and compressed air as assist gases. It has been observed that when oxygen is used as assist gas, the contribution of combustion energy was found to be 60 to 80 % more as compared to the other two types of assist gases. The cutting speed for 0.5 mm sheet was about 11 times where as for 2 mm stainless steel it was around 16 times. The role of combustion energy were theoretically calculated and compared with experimental results and found to be in good agreement.

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Al Amin, Mohamed Sultan, Halim Isa, Idral Febrian, Taufik, Z. Nuradilah, and A. M. Nor. "Application of Quality Function Deployment to Design a Liquefied Petroleum Gas Trolley." Applied Mechanics and Materials 761 (May 2015): 698–702. http://dx.doi.org/10.4028/www.scientific.net/amm.761.698.

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In Malaysia, the liquefied petroleum gas (LPG) is widely used for domestic purposes. The delivery men who are in charge of delivering the LPG cylinders to the customers are exposed to the ergonomic risk factors associated with excessive force due to the heavy steel cylinders. There are devices used to assist the delivery task, however, the devices are not efficient to be used in non-elevated apartments. Due to this reason, this study aims to design an LPG cylinder trolley. Quality Function Deployment was integrated to design the LPG cylinder trolley, so that it can fulfill the delivery man's r

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Kishimoto, S., S. Akamatsu, H. Song, J. Nomoto, H. Makino, and T. Yamamoto. "Carbon monoxide gas sensing properties of Ga-doped ZnO film grown by ion plating with DC arc discharge." Journal of Sensors and Sensor Systems 3, no. 2 (2014): 331–34. http://dx.doi.org/10.5194/jsss-3-331-2014.

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Abstract. The carbon monoxide (CO) gas sensing properties of low-resistance heavily Ga-doped ZnO thin films were evaluated. The ZnO films with a thickness of 50 nm were deposited at 200 °C by ion plating. The electrical properties of the ZnO films were controlled by varying the oxygen assist gas flow rate during deposition. The CO gas sensitivity of ZnO films with Au electrodes was investigated in nitrogen gas at a temperature of 230 to 330 °C. CO gas concentration was varied in the range of 0.6–2.4% in nitrogen gas. Upon exposure to CO gas, the current flowing through the film was found to de

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El-Ferzli, G. T., N. Ambalavanan, A. Bulger, and J. B. Philips. "137 A NOVEL GAS EXCHANGE ASSIST DEVICE IN JUVENILE ACUTE LUNG INJURY." Journal of Investigative Medicine 54, no. 1 (2006): S280.3—S280. http://dx.doi.org/10.2310/6650.2005.x0008.136.

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