Bjørn Kvamme, Marthe Austrheim, Anette Knarvik, Mojdeh Zarifi |
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| Hydrate Formation During Transport of Natural Gas Containing Water And Impurities | ||||||||
The upper limit of water content permitted in a natural gas stream during its pipeline transport
without a risk of hydrate formation is a complex issue. We propose a novel thermodynamic scheme for
investigation of different routes to hydrate formation, with ideal gas used as reference state for all components
in all phases including hydrate phase. This makes comparison between different hydrate formation routes
transparent and consistent in free energy changes and associated enthalpy change. From a thermodynamic point
of view natural gas hydrate can form directly from water dissolved in natural gas but quite unlikely due to
limitations in mass and.............
Gas hydrates, natural gas transport, rust, alternative formation routes
[1]. B. Kvamme,H. Tanaka,."Thermodynamic Stability of Hydrates for Ethane, Ethylene, and Carbon
Dioxide,".J. Phys. Chem.,Vol.99, PP.7114-71191995
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Lidinga Mobonda, Alphonse Omboua |
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Self-Regulation of the Project Great Inga for an Interconnected Electrical Network |
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In this article we present a mathematical approach which deals with the stability of power plants
from which the synchronism should be lost; the regime on the interconnected network such as dynamic regime
of linearization, the adjustment of the frequency and the regulation of power where we will take as the digital
application, the case of the project great Inga (Inga is the great hydraulic power plant located in the Democratic
Republic of Congo). The study of project great Inga planned for interconnecting several African countries.
Inga, Alternator, Regulation, Automatic, Interconnected network.
[1]. https://iiteeeestudents.wordpress.com/2011/11/14/interconnected-grid-system [2]. http://www.sciencedirect.com/science/article/pii/S037877960700017X [3]. J.F. Canard, " Impact of the generation of energy scattered in the distribution networks ", Doctoral thesis, National polytechnic institute of Grenoble, December 12th, 2000. [4]. B. Gotzig, " Research for an Optimal Diagram of Exploitation of an Electric Distribution network ", Doctoral thesis, National polytechnic institute of Grenoble, December, 1997. [5]. P. Petitclair, " Modelling and command of facts structures : application in the statcom ", Ph. D. essay, INP Grenoble, on 1997
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Habtay Ghebrewold, Goteti V. Sarma |
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Qualitative Analysis of Prey Predator System With Imigrant Prey |
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The predator prey system with immigrant prey is introduced and studied through a suitable mathematical model. Existence conditions for interior equilibrium point and their stability is studied under suitable ecological restrictions. Global stability of the system around equilibrium point is also discussed.
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[1]. R.Clark Robinson, An introduction to dynamical systems, 2004 [2]. Jawdat Alebraheem, Persistence of predators in a two predators one prey model with non periodic solution, Applied mathematical sciences, Vol 6, 2012 N0:19, 943-956 [3]. S. Gakkhar, B. Sing, R.K.Naji Dynamical behavior of two predators competing over a single prey, Biosystems, 90 , 2007, 808-817 [4]. B.Dubey, R.K.Upadhyay. Persistence and extinction of one prey two predators system, Non linear analysis: Modeling and control, 9, 2004, 307-329 [5]. H.I.Freedman, Deterministic mathematical models in population ecology, Newyork 1980
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A.Sugunakar, A.Kumar, R.Markandeya |
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Effect of Powder Mixed Dielectric Fluid on MRR And SR During Electrical Discharge Machining of RENE 80 |
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This paper mainly focussed to investigate the machining characteristics of RENE 80 Nickel Alloy during powder mixed electrical discharge machining. The experiments were conducted considering electrical parameters (pulse on time, peak current and pulse off time) at optimal combination to get maximum material removal rate by varying powders like aluminium, graphite and combination of aluminium and graphite powders and their concentrations. The experimental results reveal that improvement in material removal rate with addition of powders into dielectric fluid. The maximum material removal rate (75.08 mm3/min) was noticed with graphite powder substances at 9 g/l. Minimum surface roughness...............
Aluminium Powder Concentration, Graphite Powder Concentration, Combination of Aluminium and Graphite Powders, Material Removal Rate and Surface Roughness.
[1]. Jeswani, M.L., Effect of the addition of graphite powder to kerosene used as the dielectric fluid in electrical discharge machining. Wear 1981; 70:2:133–139. [2]. Yan, B.H. and Chen, S.L., Effects of dielectric with suspended aluminium powder on EDM, J Chinese Society of Mechanical Engineering 1993; 14: 3:307–312. [3]. Kung, K.Y., Horng, J.T. and Chiang, K.T., Material removal rate and electrode wear ratio study on the powder mixed electrical discharge machining of cobalt-bonded tungsten carbide, Int J Adv Manuf Technol 2009; 40:95–104. [4]. Anil Kumar.,Sachin Maheshwari., Chitra Sharma. and Naveen Beri., Realizing Potential of Graphite Powder in Enhancing Machining Rate in AEDM of Nickel Based Super Alloy 718,AMAE Int. J. on Production and Industrial Engineering 2010;01:01. [5]. Kuldeep Ojha., Garg. R. K. and Singh. K. K., Experimental Investigation and Modeling of PMEDM Process with Chromium Powder Suspended Dielectric Int J Applied Science and Engineering 2011; 9:2:65-81.
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Tushar Puri, Jaspreet Singh, Hemant Kaushal |
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Prototyping of Indian Electronic Voting Machine |
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The Voting System of a country consists of certain regulations which define how the preference of
people is collected and how outcome of the polling process is indicating the will of people. To implement such a
system in the largest democracy in the world is a cumbersome task. An indigenous Electronic Voting Machine
was introduced by the Election Commission of India to overcome the issues with manual voting which was
slower and inefficient. In this paper the Indian Electronic Voting Machine's Protocol for voting is implemented
on a field programmable gate array. The ASIC based design is known to be faster than a microcontroller based
design................
Prototyping, Indian Electronic Voting Machine, Verilog HDL, FPGA, Application Specific
Integrated Circuit .
[1]. Public Notice :PN/ECI/41/2009 INDIA, Election Commission of India(2009). Electronic Voting Machines-regarding. [2]. D. Ashok Kumar and T. Ummal Sariba Begum "Electronic voting machine — A review" Pattern Recognition, Informatics and Medical Engineering (PRIME), 2012,IEEE Conference 21-23 March 2012 [3]. Hari K. Prasad , J. Alex Halderman , Rop Gonggrijp , "Security Analysis of India's Electronic Voting Machines" appeared in Proc. 17th ACM Conference on Computer and Communications Security , July 2010 [4]. Sahibzada Muhammad Ali, Chaudhary Arshad Mehmood,Ahsan Khawja, "Micro-Controller Based Smart Electronic Voting Machine System" IEEE Conference 21-22 March 2013 [5]. Davide Balzarotti, Greg Banks, Marco Cova,"An Experience in Testing the Security of Real-World Electronic Voting Systems" IEEE Transactions On Software Engineering, Vol. 36, No. 4, July/August 2010
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Mitsuru Sato, Shinichi Yoshimura, Minako Hosono, Kazuhiko Yamashita, Shuichi Ino |
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Development of A New Portable Rescue Tool Using Metal Hydride Alloys |
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This paper addresses the development of a new rescue tool for saving survivors buried in the
debris of a collapsed building caused by a large-scale natural disaster. Because access to the public energy
supplies as well as the seriously stricken area are frequently cut off just after the occurrence of a large natural
disaster, a new rescue tool powered by metal hydride (MH) is being proposed. The tool achieves a large lifting
force solely utilizing thermal energy; in addition, it is effective for confined space entry and rescues without the
need for electricity or fuel. The lifting tool that was designed and experimentally produced was comprised a
robust telescopic cylinder having 50 mm of lifting stroke and 6500 N of lifting output force per 0.1 MPa of
internal pressure, an airtight MH container, and a portable heat source employing calcium oxide.................
Rescue tool, Metal hydride, Calcium oxide, Natural disaster, Initial rescue work
[1]. Y. Kawata, "The great Hanshin-Awaji earthquake disaster: damage, social response, and recovery",
Journal of Natural Disaster Science, Vol. 17, No. 2, pp. 1-12, 1995. [2]. M.A. DeLuchi, "Hydrogen vehicles: an evaluation of fuel storage, performance, safety, environmental impacts, and cost", International Journal of Hydrogen Energy, Vol. 14, No. 2, pp. 81–130, 1989. [3]. F. Michel, H. Fieseler, G. Meyer, and F. Theißen, "On-board equipment for liquid hydrogen vehicles", International Journal of Hydrogen Energy, Vol. 23, No. 3, pp. 191–199, 1998. [4]. N.L. Rosi, J. Eckert, M. Eddaoudi, D.T. Vodak, J. Kim, M. O'Keeffe, and O.M. Yaghi, "Hydrogen storage in microporous metal-organic frameworks", Science, Vol. 300, No. 5622, pp. 1127–1129, 2003. [5]. A.C. Dillon, K.M. Jones, T.A. Bekkedahl, C.H. Kiang, D.S. Bethune, and M.J. Heben, "Storage of hydrogen in single-walled carbon nanotubes", Nature, Vol. 386, pp. 377–379, 1997.
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Noha Ahmed Abd El Aziz |
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Nile River: A Fitness TrailPromoting Physical Activity In Cairo City |
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Nowadays, governments are challenged by dramaticincreases in the frequency of chronic diseases,obesity and sedentary lifestyles caused majorly by physical inactivity.In order tolessensuchcomplications, urban designers and architectsstrivetocreateopenspaces and streets that encourage walking, bicycling, and other forms of active recreation.This paper aimsatevaluating "Ahl Misr" Promenadecreated at the Nile River banks, Cairo city,Egypt,in terms ofthe vision guiding the design, design features, environmental aspects, promenade management, and funding channels. The study concentrates on exploring the extent to which the trail succeeded in offering venues for cycling.................
Fitness Trails, Environmental Design, PlaceMaking, "Ahl Misr" Promenade
[1]. ATLAS(2017). Environmental Sustainability in Context, UK [5]. Cohen, D., McKenzie, T., Sehgal, A., Williamson, S., Golinelli, D., and Lurie, N. (2007). Contribution of Public Parks to Physical Activity. Am J Public Health, 97(3):509-14.
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