Search results for: V.S. Murty

Items from 1 to 11 out of 11 results

chapter

Modelling of lunar crater ejecta extent for highland and mare using Mini-RF data

Ami J. Desai, Shiv Mohan, Sripada V.S. Murty

2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) > 1158 - 1161

IGARSS 2016 - 2016 IEEE International Geoscience and Remote Sensing Symposium

Previously using radar it was for the first time established that it is possible to quantify lunar ejecta in terms of spatial extent and can be characterized into fine and coarse based on radar backscatter effects. We also described that ejecta extent consistently increases with increase in crater diameter and is best related using power law equations. Here we describe utility of SAR to measure spatial...

article

Mineralogy of young lunar mare basalts: Assessment of temporal and spatial heterogeneity using M3 data from Chandrayaan-1

Indhu Varatharajan, Neeraj Srivastava, Sripada V.S. Murty

Icarus > 2014 > 236 > Complete > 56-71

A comparative assessment of the mineralogy of young basalts (∼1.2Ga to ∼2.8Ga) from the western nearside, Moscoviense basin, and the Orientale basin of the Moon has been made using Level 2 Moon Mineralogy Mapper (M ³ ) data from the Chandrayaan-1 mission. Spectral data characteristics of the individual units have been generated from fresh small craters to minimize the complications due to...

article

Structural and magnetic properties of ErPrFe ₁ ₇ _- _x M _x (M=Ga, Si; x=0-3.5)

J.C. Ingersoll, G. Markandeyulu, V.S. Murty, K.V.S. Rama Rao

Journal of Alloys and Compounds > 2003 > 354 > 1-2 > 29-34

The alloys ErPrFe ₁ ₇ _- _x Ga _x and ErPrFe ₁ ₇ _- _x Si _x (x=0-3.5) have been prepared and their structure and magnetization have been investigated. Powder X-ray diffraction patterns show that these compounds crystallize in hexagonal Th ₂ Ni ₁ ₇ (2:17) structure. The lattice parameters are found to increase as the Ga concentration...

chapter

Design of a language-independent parallel string matching unit for NLP

V.S. Murty, P.C. Reghu Raj, S. Raman

2003 IEEE International Workshop on Computer Architectures for Machine Perception > 7 pp. - 155

2003 IEEE International Workshop on Computer Architectures for Machine Perception

In natural language processing applications, string matching is the main time-consuming operation due to the large size of lexicon. Data dependence is minimal in string matching operations, and hence it is ideal for parallelization. A dedicated hardware for string matching that uses memory interleaving and parallel processing techniques can relieve the host CPU from this burden, thereby making the...

article

ESR spectroscopic studies on free radical quenching action of finger millet (Eleusine coracana)

G. Sripriya, K. Chandrasekharan, V.S. Murty, T.S. Chandra

Food Chemistry > 1996 > 57 > 4 > 537-540

The free radical quenching action of finger millet (Eleusine coracana) on 1,1'-diphenyl-2-picrylhydrazyl (5.407x10 ¹ ⁷ spins/ml ^- ¹ ) and hydroxyl (0.6015x10 ¹ ⁵ spins /ml ^- ¹ ) radicals was studied by electron spin resonance (ESR) spectrometry. A 10 ml concentrate of the methanol extract was prepared using 25 g of the cereal grains and all analysis...

article

ESR of Tl ² ⁺ ions in alkali natrates

K. Chandrasekharan, V.S. Murty

Solid State Communications > 1996 > 97 > 8 > 709-711

ESR spectra of paramagnetic thallium centers in γ-irradiated powders of thallium doped alkali nitrates are studied at 77 K. Tl ² ⁺ centers are formed due to γ-irradiation at 77K. Principal g- and A-values are calculated. In RbNO ₃ , two chemically inequivalent sites are observed at 77 K. The s- and p-character of Tl ² ⁺ have been calculated.

article

ESR investigation of the phosphorous-rhenium center in γ-irradiated phosphate-doped ammonium perrhenate

B. Anusuya, V.S. Murty, K. V. S. Rama Rao, S. Subramanian

Journal of Molecular Structure > 1995 > 372 > 1 > 41-47

Single crystals of ammonium perrhenate (NH ₄ ReO ₄ ) doped with PO ³ ^- ₄ and γ-irradiated at RT (300 K) give rise to paramagnetic centers which could be recorded both at RT and 77K. The radical has been identified as a pseudo V _k center, namely a PO ² ^- ₄ radical associated with ReO ^- ₄ . The g-tensor and the hyperfine A-tensor...

article

Radiation-induced paramagnetic silver centers in LiNaSO ₄

K. Chandrasekharan, V.S. Murty

Physica B: Physics of Condensed Matter > 1995 > 215 > 2-3 > 243-248

The results of ESR investigations carried out on γ-irradiated Ag-doped lithium sodium sulphate (LiNaSO ₄ ) at LNT (77 K) are reported here. Two different centres of Ag (Ag ⁰ , Ag ² ⁺ ) have been observed at 77 K. In the case of Ag ² ⁺ the parameters are g _x _x = 2.071 ± 0.001, g _y _y = 2.102 ± 0.001,g _z _z = 2.402 ± 0.001,...

article

ESR study of Ag2+ in CsNO3

K. Chandrasekharan, V.S. Murty

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy > 1995 > 51 > 4 > 731

article

ESR study of Ag ² ⁺ ions in KNO ₃

K. Chandrasekharan, V.S. Murty

Physica B: Physics of Condensed Matter > 1995 > 205 > 3-4 > 349-352

ESR studies on γ-irradiated silver-doped potassium nitrate at LNT indicated the presence of Ag ² ⁺ centres. Principal values of g- and A-tensors are obtained. Admixture coefficients of d-orbitals have been calculated. On warming the sample the signals due to Ag ² ⁺ centres disappeared at 140 K.

article

New rhenium centers in ammonium and potassium perrhenates

B. Anusuya, V.S. Murty, K.V.S. Rama Rao

Journal of Molecular Structure > 1995 > 344 > 1-2 > 135-142

Single crystals of ammonium perrhenate (NH ₄ ReO ₄ ) and potassium perrhenate (KReO ₄ ) when γ-irradiated at 77 K gave new paramagnetic centers. The paramagnetic centers formed at 77 K are identified as ReO ₃ and O ^- in both the samples. However, when temperature variation studies were carried out, it was found that these centers dissociate into Re-O and O...

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