Antimicrobial and Anticancer Activity of Metal Oxide Nanoparticles: A Review

Neera Sharma

Department of Physics, Agra College, Agra, U.P., India

E-mail: neerasharma09@yahoo.in

In this paper antimicrobial and anticancer activities of metal oxide nanoparticles are discussed. From the literature review, it is clear that metal oxide nanoparticles can be potential candidate as antimicrobial and anticancer agents. These nanoparticles are effective on both gram-positive and gram-negative bacteria and these can be used in the diagnosis and treatment of different types of cancers, without effecting healthy cells.

Keywords: Metal oxide nanoparticles, Antimicrobial activity, Anticancer activity.

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Review Article: Synthesis of Cr₂O₃ nanoparticles by Green Synthesis Method and its Applications

Neera Sharma

Department of Physics, Agra College, Agra, U.P., India

E-mail: neerasharma09@yahoo.in

In this paper green methods of synthesis of Cr₂O₃ nanoparticles are discussed. Microorganisms, plants and fungi can be used for this purpose. Green synthesis is eco-friendly and cost effective. This is one pot synthesis and uses lesser number of chemicals. This method of synthesis is faster than physical and chemical methods of synthesis of nanoparticles. Applications of Cr₂O₃ nanoparticles are also discussed in this paper.

Keywords: Cr₂O₃, Nanoparticles, Green Synthesis.

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Effect of Temperature and Nature of Bond Fission involved in the Hydrolysis of Tri-3,4-Dichloro Aniline Phosphate Ester

Dr. Amit Chaudhary

Chemistry Department, D.S. College, Aligarh, U.P., India..

Email: amitchaudhary111114@gmail.com

Kinetic study of the hydrolysis of 3,4-dichloro aniline phosphate triester have been investigated in 30% aqueous dioxan medium by performing kinetic runs in buffer solution from pH 1.24 to 7.46 at (97±0.5)°C temperature. Neutral species of the triester have been found to be reactive in this region.

Effect of temperature on the rate of hydrolysis of the triester have been studied to know the molecularity of the reaction. Comparative kinetic rate data and isokinetic relationship plot of some other phosphate triesters of known mechanism were considered to decide whether the hydrolysis of the present triester proceed with P-N or C-N bond fission.

Keywords: Hydrolysis, Dioxan medium, Triester.

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Study of Shock Wave in Non-Ideal Gas

Dr. C.V. Singh

Department of Physics, Agra College, Agra, U.P., India.

Email: drcvsinghph@Rediffenial.com

One dimensional propagating gravitating gas behind a shock wave propagating in a uniform non-ideal gas at rest is investigated. The equation of state in the suitable form for ideal gases is found to be much accurate and the equation of state for non-ideal gas is considered as given by Landau and Lifsitz.

Keywords: Shock wave, Non-ideal gas.

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Creation of a Complete Hindi Handwritten Database for Researchers

Rama Gaur^1,* and Dr. V.S. Chouhan²

^1,*Ph.D. Scholar (ECE), Jodhpur National University, Jodhpur, Rajasthan, India.

 ²Professor and Head ECE department, MBM Engineering college, Jodhpur, Rajasthan, India.

The standard database plays a vital role in handwritten character recognition. Performance of various algorithms and results obtained by researchers can be evaluated only by a benchmark database. In the field of Hindi handwritten research such database is not available. My paper is focuses on creation complete database of Hindi character and numerals. I have generated almost 100-200 samples of each character. The images are stored in JPEG format. The dimension of each character is 105X125 pixels.The size of one character is in between 12 to 25 KB. I have taken fix dimension of character to reduce the complexity for the beginners in testing their algorithms. I am sure that this database will be helpful to the future researchers.

Keywords: Character recognition, Database, Algorithms.

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Characterization of Source Rock Sediments from Test Well GGAG#699 Located in Gandhar Oil Field of Gujarat Petroliferous Basin, India, using ⁵⁷Fe Mössbauer Spectroscopy

Mridula Bohra, Sahi Ram*, S.K. Barbar and K.R. Patel

Department of Physics, Jai Narain Vyas University, Jodhpur, Rajasthan, India.

E-mail: sr_panwar@yahoo.co.in

⁵⁷Fe Mössbauer spectroscopic studies on deep subsurface sediments collected from test well GGAG#699 located in Gandhar oil field of Cambay basin, Gujarat is reported. It is found that iron if mainly present in some clay (both in high spin Fe²⁺ and Fe³⁺ state) along with fluctuating amount of pyrite and siderite. The distribution trend of iron bearing minerals can provide useful information about redox environment and in estimating the quality of source rocks in sediments.

Keywords: Source rocks, ⁵⁷Fe Mössbauer spectroscopic study, Iron bearing minerals, Cambay basin.

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Studies of Glycine Dimethyl Urea Crystals Grown by Aqueous Solution Method

U. Rajesh Kannan^1,*, G. Narayanasamy², S. Subramanian³ and P. Selvarajan⁴

^1,*Research Scholar, Reg. no. 12116, Department of Physics, M.D.T. Hindu College, Tirunelveli, Tamilnadu, India. *Corresponding author: rajeshphymsu@gmail.com

²Asso. Prof., Department of Physics, Kamaraj College, Tuticorin, Tamilnadu, India.

³Prof  & Principal (Rtd.), Department of Physics, M.D.T. Hindu College, Tirunelveli, Tamilnadu, India.

⁴Asso. Prof., Department of Physics, Aditanar College of Arts and Science, Tiruchendur, Tamilnadu, India.

(Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, Tamilnadu, India)

Glycine dimethyl urea single crystals were grown by aqueous solution method with slow evaporation technique. Let this crystal be called as GDMU crystal. The grown crystals were characterized chemically, structurally, thermally, optically and mechanically by various studies. X-ray diffraction (XRD) analysis indicates the crystal system as monoclinic. The functional groups have been identified using Fourier transform infrared (FTIR) and FT-Raman spectral analyses. Optical transmittance studies reveal very low absorption in the entire visible region. The thermal stability of the title crystal was found by the TG/DSC analysis. Mechanical characterization was done by studying the variation of microhardness with applied load. Solubility of the material was gravimetrically analyzed. The impedance analysis was performed for the sample to understand the electrical properties. Z-scan technique was employed to confirm the third order nonlinearity of the grown crystals. Its relative SHG efficiency has been tested by Kurtz powder method and it shows 1.145 times that of potassium dihydrogen phosphate (KDP). The elements present in the sample were identified by EDAX method. Photoluminescence studies were carried out for GDMU crystal to identify the photo emission peaks and the results from the various studied were analyzed.

Keywords: Aqueous Solution method, XRD, FTIR, FT-Raman, TG/DSC analysis, Hardness, Impedance, Z-Scan Spectroscopy, Second Harmonic Generation (SHG) efficiency, EDAX, Photoluminescence.

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Weather based yield crop forecasting: Agro-Physics Approach

 Dr. Vinay kumar

 Department of physics, Janta Vedic College, Baraut, Baghpat, U.P., India

The present paper deals with use of non-linear regression analysis for developing Wheat yield forecast model for Jhansi (India). Weather indices based regression models were developed using weather indices as independent variables while character under study such as crop yield was used as dependent variable for Wheat Crop i.e. two step non-linear forecast model. Technique of forecasting using non-linear approach and using weather indices will enrich the knowledge in developing customized models on forecasting for different types of crops and for different locations. For that, trend analysis has been done through linear and non-linear approaches. In which for each weather variable two indices have been developed, one as simple total of values of weather parameter in different weeks and the other one as weighted total, weights being correlation coefficients between detrended yield and weather variable in respective weeks. Weather indices based regression models were developed using weather indices as independent variables while detrended yield (residuals) was considered as dependent variable. Time series yield data of 40 years (1970-2010) and weather data for the year 1970-71 to 2009-10 have been utilized. The models have been used to forecast yield in the subsequent three years 2008-09 to 2009-10 (which were not included in model development). The approach provided reliable yield forecast about two months before harvest.

Keywords: Forecasting, Nonlinear regression model, Weather Indices Approach, Weather variables.

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Euler’s Type Integrals Results for Matrix Argument involving Zonal Polynomial

Dr. P.K. Mishra¹, Dr. Abhijit Kulshreshtha^2,* and Dr. Vaibhav Jain³

¹Department of Mathematics, Sobhasaria Group of Institutions, Sikar, Rajasthan India.

^2,*Department of Physics, JIET Group of Institutions, Jodhpur, Rajasthan, India.

*E-mail:- abhijitjecrc@yahoo.com

³HOD, Department of Physics, DAV (PG) College, Bulandshahr, UP, India

.

In this paper some Euler’s type integrals of generalized hypergeometric function of symmetric positive definite matrix associated with zonal polynomial are discussed, then established new result in particular cases and compare with Euler’s type integral of scalar case. The integrals of Euler’s type have a wide range of applications in the theory of applicable mathematics including statistical distributions. Few known and new results are discussed as particular cases.

2010 Mathematics Subject Classifications: 33C20, 33C45, 33E20, 33C60.

Keywords: Euler’s type integral, Matrix arguments, Zonal polynomials, Hypergeometric function.

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