IOSR-JAP   Volume-2 ~ Issue-2 ~ Sep–Oct 2012

Paper Type	:	Research Paper
Title	:	Design and Development of Instant Power Supply
Country	:	Bangladesh
Authors	:	Ashraf Mehbub, Humayun Kabir, Jahirul Islam Khandaker, Md. Abdul Mannan Chowdhury
	:	10.9790/4861-0220104

Abstract: Instant Power Supply unit (IPS) is an electrical device that provides power when the main supply fails to operate. In the present work an attempt has been made to design and develop an instant power supply unit at the electronics laboratory of department of Physics, Jahangirnagar University. In the present circuit active and passive devices, such as diodes, transistors, capacitors, resistors etc have been used. Two transformers (One Step up and one step down) have also been used in this work. A voltage regulator (LM 338K) is used in the charger circuit so that the battery will be charged properly and will not be over charged. As a result the battery will get long life. Also the output of the device will be automatically stable. A relay circuit has been incorporated so that when the main supply is present the battery will automatically be charged and not provide any output. The main supply would come to the output of the IPS through the relay circuit. The designed circuit is operated successfully and the results obtained are satisfactory.

[1]. http://www.powercombd.com/products/72-instant-power-supply-ips.
[2]. http://en.wikipedia.org/wiki/Transformer.
[3]. http://en.wikipedia.org/wiki/Battery_%28electricity%29.
[4]. http://en.wikipedia.org/wiki/Electronic_oscillator.
[5]. Ramakant A. Gayakward, "Op-Amp and Linear Integrated Circuits" 4th edition, Pearson Education. P-279.
[6]. Rezaul Karim Mazumder, "Principles of Electronic Circuit" Banglabazar, Dhaka. P- 469.
[7]. http://www.toolingu.com/definition-460310-34129-power-circuit.html.

Paper Type	:	Research Paper
Title	:	Automation Technique for the Plunger in Liquid Cell of X-Band Microwave Bench Using Stepper Motor
Country	:	India
Authors	:	S. S. Nalwad , S. V. Vedpathak , Dr. K. U. Gore
	:	10.9790/4861-0220508

Abstract:Automation is the use of Computer controlled stepper motors. It is one of the most versatile forms of positioning systems. Generally dielectric parameters of different polar liquids, binary mixture of polar liquid with non polar liquid in different mole fraction or weight fraction are measured by using X-band Microwave bench manually. The measurements done manually are not much accurate and exact. Hence, personal computer (PC)based automatic measurement technique is used for accurate measurement of the dielectric parameters. PC based stepper motor moves the plunger in liquid cell of microwave bench & measures the distance up to fraction of mm to nanometer per step. This technique is used to give the maximum accuracy for the measurement of 𝜆𝑑. Further accuracy of this technique can be increased when the stepper motor is operated in micro stepping mode.
Keywords: Driver, Microcontroller, PC, Stepper motor, X-band Microwave bench

Journal Papers:
[1] Mandeep Singh, Rekha & Balwinder Singh International Journal of computer science & communication Vol. 1, No. 1, January-
June 2010, pp. 189-191
[2] R.H. Amenerkar, C.S. Adgaonkar, S.S. Yawale and S.P. Yawale, "Microwave properties of vanadium borate glasses",
Material Science., 25, No. 5, October 2002, pp 431-434.
Books:
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[6] Von Hippel"Dielectric materials and applications", John and Sons New York, 1954, pp 104-115..
[7] Duglas V .Hall. "Microprocessor Interfacing and Programming".McGraw-Hill.1998
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Paper Type	:	Research Paper
Title	:	Arising From a Published Source Beam, Magnetic and Gravitational Fields Other Than Particle Passes Etc... Then The Beam Is Converted Into a Magnetic Beam
Country	:	India
Authors	:	Vikrant
	:	10.9790/4861-0220914

Abstract: Light interference, diffraction and polarisatrion events etc, based on the successful delivery of the light wave can be represented nature. Other events, such as some of the light - the Photoelecticlight effect, Compton effect and the Raman effect etc, to reflect such events require Einstein quantum theory. Which acts as particles of light called a photon. Accordingly, acts like a particle beam to see if the publish. If a published ray source (E.g. - bulbs, sun, etc.) occurs, then the beam in the presence of atmospheric molecules, microscopic molecule, particle and planet etc, comes into contact changes its nature and properties.And other properties of the beam starts to appear, it seems to behave like a magnetic beam.

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Paper Type	:	Research Paper
Title	:	Femtosecond Electronic Thermal Oscillation in Electron Temperature Dynamics in Thin Gold Film
Country	:	F. M. Jasim ,M. I. Azawe
Authors	:	Iraq
	:	10.9790/4861-0221523

Abstract:High intense femtosecond laser pulse is irradiated on thin gold film. Electron temperature was evaluated using the two-temperature and the dual- phase lag models. Numerical results showed a thermal oscillation in electron temperature dynamics. To assess thermal oscillation, analytical solution of the characteristic equation for heat conduction was obtained by the Laplace transformation method and implied with the Van Neumann condition. More than one temperature locations in the surface of thin gold film were observed.
Key Words; femtosecond laser pulse, gas dynamics, laser plume expansion, thin film gold foil, two-temperature model.

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Paper Type	:	Research Paper
Title	:	Seismic Activity and Seismotectonic Correlation with Reference to Northeast India.
Country	:	India
Authors	:	Pulama Talukdar, N.C. Barman
	:	10.9790/4861-0222429

Abstract:Northeast India and its surrounding regions are seismically one of the six most active regions of the world which has experienced 19 large (M ≥ 7) including 3 great earthquakes (M ≥ 8). The region has five major tectonic domains having its own evolutionary history and characteristics. Seismicity and seismotectonic correlation of the region is studied by earthquake distribution pattern in different magnitude and depth relating to each tectonic domain dividing the area into five blocks. It has been observed that the Main Central Thrust (MCT) and Main Boundary Thrust (MBT) along the line of collision between the Indian and Eurasian plate are predominant site of shallow earthquake events of the area to the north whereas Indo-Burma belt is the prime area of intermediate earthquakes evidencing the continuous subduction of Indian plate to the Burmese to the east. Besides intra plate activity in Shillong plateau and Mikir Hills is also shaking the region. The epicentral concentration around Kopili lineament clearly shows that this is the most active lineament of Assam valley.
Key Words; Fault, Lineament, Seismicity, Seismotectonic, Thrust.

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Preparedness, Oct. 13-14, Roorkee,19967
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Paper Type	:	Research Paper
Title	:	Hyperspherical Three Body Calculations For The Exotic He 6  Hypernucleus
Country	:	Egypt
Authors	:	M. A .Allam
	:	10.9790/4861-0223036

Abstract:Hyperspherical three body calculations are performed to study and review the various properties of the exotic double  hyper nucleus  6He. The  6He hyper nucleus is considered as a three body system consisting of two  hyperons coupled to an  core. Different -  and  -  realistic and phenomenological potentials are used in the calculations. Using the hyperspherical formalism, a complete symmetric and mixed symmetric wave functions are introduced. Contributions from partial waves are also taken into account in the calculations. The Fabre optimal subset is adopted to obtain fast and good convergence for the calculated binding energy using the renormalized Numerov method. The obtained results are then compared with recent experimental value as well as those calculated using other methods. The calculated  6He binding energies are in good agreement with the new experimental one reported by Nagara event. PACS numbers: 21.30. + y, 21.10.+dr,27.20.+n
Key Words; Hyper spherical three body calculations.-  and  -  realistic and phenomenological potentials, Double  hyper nucleus  6He.

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Paper Type	:	Research Paper
Title	:	Impact of shock wave on a body moving at Supersonic speed
Country	:	India
Authors	:	Neeraj Jasher, Nirav Patel & Blesson Prakash
	:	10.9790/4861-0223742

Abstract:Determining how much force will an aircraft or any forward moving body have to face when it travels at a velocity of more than the velocity of sound. The core of this research is to find out how much pressure air can exert after the formation of the shock wave, subsequently calculating force.
Key Words; 1. Drag: It is the air resistance caused due to the forward motion of any object such as aircrafts. 2. Shock wave: It is the thin layer of air caused when any object (aircraft in our case) exceeds the speed of sound (330m/s at sea level). Due to shock wave drag increases rapidly. 3. Mach number: It is the ratio of the velocity of any object with respect to speed of sound.

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Paper Type	:	Research Paper
Title	:	Approximate Solution of Schrodinger Equation for Modified Poschl-Teller plus Trigonometric Rosen-Morse Non-Central Potentials in Terms of Finite Romanovski Polynomials
Country	:	Indonesia
Authors	:	A. Suparmi, C. Cari, J. Handhika, C. Yanuarief, H. Marini
	:	10.9790/4861-0224351

Abstract:The energy eigenvalues and eigenfunctions of Schrodinger equation for Modified Poschl-Teller potential plus trigonometric Rosen-Morse non-central potential are investigated approximately in terms of finite Romanovski polynomial. The approximation has been made to solve the radial Schrodinger equation. The approximate bound state energy eigenvalues are given in a closed form and corresponding radial and eigenfunctions are obtained in terms of Romanovski polynomials. The polar eigenfunctions are obtained in terms of Romanovski polynomials. The trigonometric Rosen-Morse potential is considered to be perturbation factor to the modified Poschl-Teller potential since it causes the decrease of the length of angular momentum vectors.
Key Words; Approximate Solution, Schrodinger Equation, Modified Poschl-Teller Potential, Trigonometric Rosen Morse Non-Central Potential, FiniteRomanovski Polynomials

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