Papers

Journal of Ultra Scientist of Physical Sciences - B
Voulume: 20
Issue: 1
Article No. 1
Porous Density Dependent Photoluminescence from Porous Silicon
R. K. Tyagi
Physics Department, Govt. (P.G.) College, Khatima (Uttrakhand) - 262308 (INDIA)
B. D. Tyagi
CEERI, Pilani - (Rajasthan) INDIA
Pankaj Pathak
Physics Departmental, S.S.V., College, Hapur, Ghaziabad (U.P,.) 245101 (INDIA)
Abstract :

Porous silicon is obtained by electrochemical etching of single crystalline silicon with 48% hydrofluoric acid. In this work we calculate energy gap DE for different visible wavelengths in the white light spectrum by treating energy levels in the bands of porous silicon as Bohr levels. This emission of monochromatic visible wavelengths is related to porous density of porous silicon (p-si) material. These visible wavelengths are expected to be emitted from degenerate energy levels above band gap.
 

Keyword : Porous Silicon (PS), Photoluminescence, Electroluminescence, Porosity, Quantum Wires
DOI : jusps-B
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Article No. 2
Synthesis of some new quinazolin-4 (3H)-ones and their biological activities
Pankaj Kumar
Department of Chemistry, D.N. (P.G.) College, Meerut - 250 002 (INDIA) Amoli Organics, Pvt. Ltd., Turbhe, Navi Mumbai - (INDIA)
Payal Singh
Department of Pharmacology, L.I.R.M., Medical College, Meerut (INDIA)
Jai Singh
Department of Pharmacology, L.I.R.M., Medical College, Meerut (INDIA)
S.M. Sharma
Department of Pharmacology, L.I.R.M., Medical College, Meerut (INDIA)
A.K. Mishra
Department of Pharmacology, L.I.R.M., Medical College, Meerut (INDIA)
Ashok Kumar
Department of Pharmacology, L.I.R.M., Medical College, Meerut (INDIA)
Abstract :

5-Iodoanthranilic acid, 5-bromo anthranic acid, acetanthranils or benzoxazinones, 2-methyl-3-(p-methylphenyl)-6-iodo quinazolin-4(3H)-ones, 2-bromomethyl-3-(p-methylphenyl)-6- iodoquinazolin-4(3H)-ones, 2-hydrazino methyl-3-(p-methylphenyl)-6-iodoquinazolin-4(3H)-ones,1-[2'-methylene-3-(p-methylphenyl)-6-iodoquinazolin-4(3H)-onyl-4-(ochlorophenyl)-2-(2''-phenylindol-3''-yl)-2-pyrazolines have been prepared. Their structures have been established by elemental analysis. IR spectra, NMR spectra and mass spectra. All the compounds have been tested for their anti-inflammatory activity, analgesic activity, ulcerogenic activity and cyclooxygenase activity.
 

Keyword : Quinazolin-4(3H)-ones, anti-inflammatory, analgesic, ulcerogenic cyclooxygenase activities
DOI : jusps-B
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Article No. 3
Performance analysis of Cascade Type Solar Still
Rachel Oommen
Professor and Head
R. Usharani
M. Phil, Department of Physics, Avinashilingam University, Coimbatore - 43 (Tamil Nadu) INDIA
Abstract :

In the present study, a Single sloped cascade solar distillation unit with total evaporation area of 0.996 sqm was fabricated and the performance analysis has been carried out during the months of April, May, June and July in the year 2006 at solar energy laboratory of Physics Department, Avinashilingam University, Coimbatore. Temperatures of water, glass cover and step temperature were recorded at regular intervals using thermocouples. Insolation, ambient temperature, and wind velocity were also recorded on sunny as well as cloudy days The daily distillate output varies between 2000-2500ml on sunny days from 9.00AM to 4.00PM., while the solar insolation varies between 700-870 w/m2. The daily distillate output varies between 880-1900ml on cloudy days between 9.00AM to 4.00PM., while the solar insolation varies between 330-700 w/m2. The nocturnal distillate output varies between 200-500ml. The efficiency of this solar still was found to be in the range of 20-30%.

Keyword : Performance, Cascade, Solar Still
DOI : jusps-B
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Article No. 4
Study of MHD modes of Oscillations in Solar Coronal arcades
Seema Pande
Department of Physics, Kumaun Universiry, Nainital (INDIA)
Bimal Pande
Department of Physics, Kumaun Universiry, Nainital (INDIA)
Kavita Pandey
Department of Physics, Kumaun Universiry, Nainital (INDIA)
Abstract :

We have made an attempt to study magnetohydrodynamic (MHD) disturbances inside the coronal arcades by solving a pair of second-order two dimensional partial differential equations. MHD modes of oscillations of coronal arcades are investigated. It has been shown that the factors responsible for oscillatory modes give rise to the propagation of MHD waves.

Keyword : modes, Oscillations, Solar Coronal
DOI : jusps-B
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Article No. 5
Synthesis of some thiazolidinones and their Biological study
Pankaj Kumar
Department of Chemistry, D.N. (P.G.) College, Meerut - 250 002 (INDIA) Amoli Organics, Pvt. Ltd., Turbhe, Navi Mumbai - (INDIA)
Payal Singh
Department of Pharmological, L.L. R.M., Medical College, Meerut (INDIA)
Jai Singh
Department of Pharmological, L.L. R.M., Medical College, Meerut (INDIA)
A.K. Mishra
Department of Pharmological, L.L. R.M., Medical College, Meerut (INDIA)
Ashok Kumar
Department of Pharmological, L.L. R.M., Medical College, Meerut (INDIA)
Abstract :

A series of 2-Methyl-3-(4-hydroxyphenyl)-6-chloro quinazolin-4(3H)-ones (1-6), 2-bromomethyl-3-(4-hydroxyphenyl)-6-chloroquinazolin-4(3H)-ones (7-12), 2-hydrazinomethyl-3-(4-hydroxyphenyl)-6-chloroq- uinazolin-4(3H)-ones (13-18), 2-(2'-methylindol-3'-yl-imino) amino methyl-3-(4-hydroxyphenyl)-6-chloroquinazolin-4(3H)-ones (19-24), 2-[4'-oxo-5'-substituted-2'-(2''-methylindol-3''-yl) thiazolidin-1-yl]-aminomethyl-3-(4-hydroxyphenyl)-6-chloroquinazolin-4(3H)-ones (25-30) have been synthesized. The structures of these compounds have been confirmed by elemental analysis and spectral data such as IR, NMR and mass spectra. These compounds were also evaluated for their biological study such as anti-inflammatory, ulcerogenic and analgesic activities.
 

Keyword : Quinazolin-4(3H)-ones, Thiazolidinones, anti-inflammatory,, ulcerogenic, analgesic
DOI : jusps-B
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Article No. 6
Spherical shock in heat radiating atmosphere
R.P. Yadav (rpyadav93physics@yahoo.co.in)
Physics, Deptt., Govt., P.G. College, Bisalpur (Pillibhit) 262201 (INDIA)
Ratnesh Kumar
Physics, Deptt., Govt., P.G. College, Bisalpur (Pillibhit) 262201 (INDIA)
Manoj Kumar Gangwar
Physics, Deptt., Govt., P.G. College, Bisalpur (Pillibhit) 262201 (INDIA)
Abstract :

Chester - Chesnell- Whitham method has been applied to study the propagation of strong spherical shock in the heat radiating atmosphere having uniform density distribution. Neglecting the effect of overtaking disturbances the analytical expressions for shock velocity, shock strength, particle velocity and pressure have been obtained using Bhowmick conditions. The results obtained here are compared with those for non-radiating heat atmosphere.
 

Keyword : Isothermal propagation, Shock wave, Uniform density distribution
DOI : jusps-B
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Article No. 7
Performance of SIC and PIC Detectors on WCDMA Using MATLAB
Rajeev Sharma (monrajanp@rediffmail.com)
Department of ECE, Vaish College, of Engineering, Rohtak, Haryana (INDIA)
Ms. Manisha Mittal (manumanisha22@gmail.com)
Student M.E., Department of ECE, Vaish College, of Engineering, Rohtak, Haryana (INDIA)
Ms. Vaneeta (batravaneeta@yahoo.com)
Student M.E., Department of ECE, Vaish College, of Engineering, Rohtak, Haryana (INDIA)
Abstract :

The goal of Third Generation (3G) mobile communication systems is to provide users not only with the traditional circuit switched services, but also with high speed Internet access, video conferencing and multimedia applications. Universal Mobile Telecommunication System is the 3G mobile communication system specified by European Telecommunications Standards Institute. Wideband CDMA is the physical layer of UMTS Terrestrial Access Network. WCDMA employs direct-sequence code division multiple access Technology. The main limitation of this technology is multiple access interference. MAI is thus a major factor, which limits the capacity and the performance of a DSCDMA system. The conventional detector is a bank of correlators and it follows a single-user detection strategy The drawbacks of the single-user detector are that it is interference-limited and it also suffers from the near-far problem. A better detection strategy is Multi-User Detection. MUD reduces the MAI effect by jointly using information of multiple users to better detect each user. This increases the system performance as well as system capacity. Multi-user detection techniques are essential for achieving near optimal performance in communication systems. Therefore, the addition of multi-user detection capabilities to various network elements promises to be the key for enabling significant increase in capacity needed for 3G mobile systems.
I . OBJECTIVE :
The objective of the paper is to study the effects of subtractive interference cancellation detectors namely the SIC and PIC Detectors on the performance of WCDMA uplink transmi- ssion. We have implemented the WCDMA uplink end-to-end physical layer in MATLAB and compared the performance of multi-user detection with single-user detection. Factors such as the number of simultaneous users and channel estimation are taken into consideration, for three main UMTS channels namely: Indoor ChannelA, Pedestrian Channel A and Vehicular Outdoor Channel A.
II. HELPFUL HINTS :
 

Keyword : Universal Mobile Telecommunication System, UMTS, ETSI, European Telecommunications Standards Institute, Terrestrial Access, Multiple Access Interference.
DOI : jusps-B
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Article No. 8
Chemical analysis of ground water collected from different areas of Narwar block (Shivpuri, M.P.) (India)
K.P.S. Chauhan
Department of Chemistry, S.M.S., Govt., Model Science College, Gwalior M.P. - 474002 (INDIA)
D.S. Kadam
Division Ground Water Survey, Gwalior (M.P.) INDIA
Naveen Kumar Singh
Division Ground Water Survey, Gwalior (M.P.) INDIA
Abstract :

The quality of ground water depends on the ion, which are dissolved in ground water. The major ions which are responsible to maintain the quality of ground water are carbonate (CO32-.) and bicarbonate(HCO3-1), Chloride (Cl-1), sulphate (SO4-2), nitrate (NO3-1), phosphate (PO4-3), fluoride (F-1). These ions are present in anionic form. The cation and anion must be equal to maintain the quality of water cation such as Ca2+, Mg2+,Na+ and K+ are also present in ground water in form of hardness and salinity. 10 water samples are collected from Narwar Block (Shivpuri District) for post mansoon season (2004). The ionic concentration is expressed in mg/L.
 

Keyword : pH, Total alkality, Total hardness, calcium hardness, Magnesium hardness Na+
DOI : jusps-B
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Article No. 9
Study of impact of discharge of hospital effluent on the quality of lake water at Bhopal (India)
Monika Jain (mona_raj_2004@yahoo.com)
Maulana Azad National Institute of Technology, (MANIT) , Bhopal (INDIA)
Praveen Jain
Institute of Basic Science and Information Technology, M.P. Bhoj (Open) University, Bhopal (INDIA)
Nidhi Jain
Department of Pharmacy, RKDF, College, Ganj Basoda (INDIA)
Abhay Pandey
Department of Chemistry, Govt. SGS PG College, Ganj Basoa (INDIA)
Abstract :

Bhopal, the capital of M.P. has twenty five lakes from which upper lake, lower lake and shahpura lake are more important lakes. There are almost 115 hospitals and nursing homes in Bhopal and Many hospitals are going to be setup here, which will increase the pollution load on water bodies. The hospital effluent and sewage contribute the source of pollution in lake water. The physical and chemical parameters have been analyzed. The results show that the hospital effluent deteriorates the quality of lake water significantly. Present study reveals the effect of discharge of untreated hospital effluent into the lake.

Keyword : discharge of hospital , effluent, quality of lake, water
DOI : jusps-B
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Article No. 10
Structural, Electrical and Magnetic studies of Pyrite and related mineral
R.K. GEDAM (rajugendam40@yahoo.co.in
Department of Physics, Institute of Science, Nagpur - 440 001 (MS) INDIA
D.K. KULKARNI (dkknag@rediffmail.com)
Retired Prof. & Head of Department of Physics, Institute of Science, Nagpur (MS) INDIA
Abstract :

In the present work, the sample of the pyrite and aresenopyrite mineral were collected from Malanjkhand open pit mines of Balaghat district of Madhya Pradesh and Bhimsen Kila Pahar block of Bhandara district Maharashtra State to study the structural and physical studies of the samples in Laboratory. The samples has been characterized by X-ray diffraction technique and revealed that the first sample was possesses cubic crystal structure with pyrite structure and preferred orientation along (311) plane with the space group Pa3 and point group 2/m3. The value of lattice parameter a for the pyrite sample is found to be 5.417 ºA and the second sample was possesses monocline structure with arsenopyrite along (210) plane with space group P21/c and point group 2/m. The value of lattice parameter a, b and c are found to be 5.741 ºA, 5.668 ºA and 5.770 ºA respectively. The d.c. electrical resistivity measurement have been carried out over temperature range of 300° to 800°K. The temperature dependence of electrical resistivity exhibited activation energies. The magnetic susceptibility value are found to be 96.91 x 10-8m3kg-1 and 11.09 x 10-8m3kg-1 (S.I. unit). These values were compared with the standard data and showed that the samples are having cubic and monoclinic structure, semiconductor behavior and paramagnetic which become ferromagnetic after applied external field.
 

Keyword : Electrical resistivity, pyrite, magnetic, structure mineral.
DOI : jusps-B
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