12-14 September, 2011, Lucknow - Earth Science India

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National Conference on Science of Climate Change and Earth’s Sustainability: Issues and Challenges ‘A Scientist-People Partnership’ 12-14 September, 2011, Lucknow A GREEN CHEMICAL APPROACH PHARMACOLOGICAL EVALUATION OF SOME 1, 3, 4- OXADIAZOLE DERIVATIVES Khushboo Jain 1* , Bharat Parashar 2 and V.K. Sharma 1** 1 Microwave Chemistry Laboratory, Department of Chemistry, University College of Science, M.L.Sukhadia University, Udaipur (Rajasthan). 2 Department of Pharmaceutical Sciences, Manav Bharati University, Solan. H.P. email: * jkhushboo102@gmail.com, ** dr.vinodkumars@yahoo.com The solvent-free organic reactions assisted by microwaves in particular, have gained special attention in recent years. The use of microwave irradiation in organic synthesis can increase the purity of the resulting products, enhance the chemical yield and shorten the reaction time. Solvent-free reaction leads to a clean, eco-friendly and economic technology. Reactions on solid support without using solvent usually with open vessel in domestic microwave ovens are currently in use for synthetic chemist to create eco-friendly atmosphere. In view of these facts, we present herein a rapid and efficient method for the synthesis 1, 3, 4-oxadiazoles derivatives in solvent-free conditions under microwave irradiation using silica gel as solid support. Reaction of isonicotinohydrazide with different aromatic aldehydes under the microwave irradiation gives Schiff’s bases. These Schiff’s bases were converted into 1, 3, 4-oxadiazole derivatives by treating with acetic anhydride under the microwave irradiation. The structures of the compounds were confirmed by elemental analysis, IR, 1 HNMR and Mass spectral data. The synthesized compounds were screened for antimicrobial, analgesic and anti-inflammatory activities. ON SOME QUALITATIVE ASPECTS OF STOCHASTIC MODEL ON A DIFFERENTIABLE MANIFOLD: AN ATMOSPHERIC SCENARIO Pijush Basak and Arnab Gupta Narula Institute of Technology, 81 Nilgunj Road, Agarpara, Kolkata 700109 email: pljushbasak@rediffmail.com, arnab.math08@gmail.com Droughts and floods are two opposite scenario in atmospheric science. Ornstein- Uhlenbeck process is the stochastic model representing droughts and floods. The main emphasize in this paper is to study the Stochastic Differential Equation of droughts and 62
National Conference on Science of Climate Change and Earth’s Sustainability: Issues and Challenges ‘A Scientist-People Partnership’ 12-14 September, 2011, Lucknow floods on a differentiable n-manifold (M). The Stochastic Differential Equation (SDE) in a differentiable manifold has been studied by many scientists viz., P. Levy, F. Perrin. The existence and uniqueness theorem of SDE in an n-dimensional Euclidean space has been established by K.Ito. In his paper, Ito has defined an n-dimensional manifold M, a Hausdorff space with second countability axiom and with coordinate neighborhoods, each homeomorphic to the interior of a sphere of n-dimensional Euclidean space and also defined a continuous random motion in M as a M-valued function π (t, w) of t and w to which is measurable in w to for each t and continuous in t for each w. The obvious question arises whether a random motion is defined in such a space Al. It is possible to define a random motion on a differentiable manifold (a locally compact space) and it may be noted that if the manifold is connected (it is always locally connected) then it is a metric space also. Now there arises an obvious problem if we switch on from a locally compact metric space to an n-manifold which is compact, connected and Hausdorff. Generally, a differentiable n-manifold cannot be defined by a single chart; rather on an n-manifold more than one chart exists. Naturally, under a change of basis more than one vector fields would occur corresponding to each chart and the latter one depends on the former. Thus the present paper establishes the qualitative study viz., existence and uniqueness theorem. VEGETATION AND CLIMATE HISTORY FROM KUSUMELLI SWAMP, SEHORE DISTRICT, MADHYA PRADESH SINCE EARLY HOLOCENE Poonam Verma and M.R. Rao Birbal Sahni Institute of Palaeobotany, 53, University Road, Lucknow-226007. email: verma.poonam07@gmail.com The present study deals with the reconstruction of vegetation and climate since Early Holocene through pollen analysis from two profiles of Kusumelli Swamp Sehore district, Madhya Pradesh. Based on changing relative frequencies of major arboreal and non arboreal taxa, three pollen zones (KDC-1 to KDC-3 and KDT-1 to KDT-3) of vegetation and corresponding climate fluctuations have been recognized from KDC core of 1.5m and KDT trench of 1m respectively. KDC zone-1 exhibits diverse floristic and dense augmentation of flora. Madhuca indica, Buchanania lanza, Butea monosperma, Shorea robusta, Terminalia sp., Tectona grandis, etc are major deciduous trees. In addition, few dry deciduous taxa i.e. Holoptelea sp., Lannea sp., Diospyros sp., Flacourtia sp., Acacia sp. and Meliaceae also encountered. The floristic suggests a mixed tropical deciduous forest developed in 63
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12-14 September, 2011, Lucknow - Earth Science India

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