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Amity University is a private - Research university in India. Established by the non-profit Ritnand Balved Education Foundation in the Indian state of Uttar Pradesh; it has campuses in Ahmedabad, Bangalore, Bhubaneswar, Chandigarh, Chennai, Gurgaon, Gwalior, Greater Noida, Hyderabad, Indore, Jaipur, Kochi, Kolkata, Lucknow, Mumbai, Noida, Patna, Pune, London, Dubai, Singapore, Mauritius, New Jersey, and China. In 2014, Amity University has been named by Quacquarelli Symonds as one of Asia's top 300 universities. It is one of 17 varsities from India to be included in this list Wikipedia.

Abstarct: This paper presents an analysis of atmospheric electrical conductivity during monsoon period at a semi-urban site of Northern India. Continuous measurements of unipolar positive conductivity along with some meteorological parameters were made from June to August 2010 at Roorkee (29 52′N, 77 53′E, 275 m above sea level). The electrical conductivity for the three consecutive months was in the range of (25.2-19.5), (65-18) and (53-26) × 10-16 S/m respectively. The atmospheric electrical conductivity was positively correlated with wind speed, relative humidity and rain fall while it was found to be negatively correlated with average temperature in the monsoon period. Possible causes for the variation of atmospheric electrical conductivity in the light of meteorological parameters were discussed. © 2013 Indian Association for the Cultivation of Science. Source

This study was undertaken to investigate the influence of plant probiotic fungus Piriformospora indica on the medicinal plant C. forskohlii. Interaction of the C. forskohlii with the root endophyte P. indica under field conditions, results in an overall increase in aerial biomass, chlorophyll contents and phosphorus acquisition. The fungus also promoted inflorescence development, consequently the amount of p-cymene in the inflorescence increased. Growth of the root thickness was reduced in P. indica treated plants as they became fibrous, but developed more lateral roots. Because of the smaller root biomass, the content of forskolin was decreased. The symbiotic interaction of C. forskohlii with P. indica under field conditions promoted biomass production of the aerial parts of the plant including flower development. The plant aerial parts are important source of metabolites for medicinal application. Therefore we suggest that the use of the root endophyte fungus P. indica in sustainable agriculture will enhance the medicinally important chemical production. Source

Srivastava S.K.,Amity University
Journal of Superconductivity and Novel Magnetism | Year: 2014

The present paper describes the study of defect modes in a one-dimensional photonic crystal (1d-PC) containing a high and low temperature superconductor as a defect layer at different temperatures below the superconducting transition temperature (T c ). Since the refractive index of the superconducting material is dependent on the penetration depth, which depends on the temperature of the superconducting material, hence by changing the temperature of the superconducting material its refractive index can also be changed. Analysis of the transmission spectra of defect modes in the reflection band of 1d-PC structure shows a shift in the wavelength peak of the defect mode. The shift in peak is different for different superconducting materials and it increases with the increase in temperature whether the defect layer is high T c or low T c superconductors. We also study the presence two defect layers in a 1d-PC structure, one with high T c and other with a low T c superconductor. Further, the effect of variation in the thickness of the defect layer on the defect modes of the PC structure has also been studied In order to obtain the transmission (reflection) spectra of a 1d-PC structure with a defect, we employ the transfer matrix method (TMM). This property of the defective PC structure can be exploited in designing the temperature sensor and narrow optical filters. Further, this tunable feature of superconductor photonic crystal has technical use in the superconducting electronics and photonics. © 2013 Springer Science+Business Media New York. Source

Kumar A.,Amity University
Journal of Atmospheric and Solar-Terrestrial Physics | Year: 2013

In the present study, the Moderate Resolution Imaging Spectroradiometer (MODIS) data retrieved from Terra satellite has been used to investigate the spatial and temporal variations in aerosol particles over North Eastern region of India for the period (2001-2010). Aerosol optical depths have found to be increased >15% across North Eastern part of India during the last decade (2001-2010). During the summer season, the mean AOD values (0.60±0.07) were observed whereas during the post monsoon season, mean AOD values were observed to be 0.07±0.02. Highest annual mean increase of AOD (> 79%) has been found over Guwahati. We then studied the relationship between AOD and five other cloud parameters namely water vapor, cloud fraction, cloud top temperature, cloud top pressure and cloud optical depth over North Eastern part of India so as to provide a better understanding of aerosol-cloud interaction. © 2013 Elsevier Ltd. Source

Sarwat M.,Amity University
Methods in Molecular Biology | Year: 2012

With the emergence of more and more molecular markers as useful tools in plethora of population genetic and phylogenetic studies, choice of marker system for a particular study has become mind boggling. These marker systems differ in their advantages and disadvantages, so it is imperative to keep in mind all the pros and cons of the technique while selecting one for the problem to be addressed. Here, we have shed light on the ISSR (intersimple sequence repeat) technique, as a marker of choice if one wants to go for properties such as reliability, simplicity, cost effectiveness, and speed, in addition to assessing genetic diversity between closely related individuals. We have outlined here the whole methodology of this technique with an example of Tribulus terrestris as case study. © 2012 Springer Science+Business Media, LLC. Source

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