Gopika Suresh

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Magnetic susceptibility measurements are performed on 40 sediment samples collected from the Ponnaiyar river, Tamilnadu. Measurement of magnetic susceptibility of sediments, reflecting magnetic enhancement of top sediments due to the atmospherically deposited magnetic particles of anthropogenic origin as well as approximate determination of environmental(More)
In a hybrid system of photo voltaic and fuel cell, the fuel cell can be kept as a backup source replacing a battery. The hydrogen for the fuel cell can be produced from an electrolyser which runs by the excess solar power during the off peak hours. The hydrogen fuel can be stored in a storage tank and can be used during the absence of solar energy. The low(More)
The Automatic oil Seep Location Estimator (ASLE) described in this paper is a system that can automatically estimate the locations of potential oil seeps using SAR images. The ASLE segments dark areas in SAR images, calculates direct features related to geometry and backscatter as well as contextual features like wind speed and direction for each dark(More)
Soil is naturally occurring material that is used for the construction of structures except the surface layers of pavements. This naturally occurring soil may not suit the design requirements of ongoing project. So, soil is to be prepared to meet the requirements called soil stabilization. Stabilization is the process of blending of different soils or(More)
In the title compound, C(20)H(19)NO(5), the dihedral angle between the mean plane of the pyran ring (which has a half-chair conformation) and the benzene ring of the chromeno ring system is 7.21 (7)°. The dihedral angle between the mean plane of the chromeno ring system and the isoxazole ring is 21.78 (6)°, while the isoxazole ring forms a dihedral angle of(More)
In the title compound, C(26)H(27)ClN(3)O(3)P, the mean plane of the central pyrazole ring forms a dihedral angle of 71.37 (14)° with the chloro-phenyl ring. In the crystal, mol-ecules are linked by pairs of N-H⋯O hydrogen bonds, forming inversion dimers with R(2) (2)(10) ring motifs. The 3-phenyl ring is disordered with four C atoms occupying two sets of(More)
In the title compound, C(18)H(17)NO(4), the hy-droxy-ethanimine group is essentially coplanar with the ring to which it is attached [C-C-N-O torsion angle = 179.94 (14)°]. The mol-ecules are linked into cyclic centrosymmetric R(2) (2)(6) dimers via O-H⋯N hydrogen bonds and the crystal packing is further stabilized by C-H⋯O inter-actions.