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4篇 您的检索式:作者名="Neha Aggarwal"
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1Palaeoenvironmental reconstruction for the Permian(lower Gondwana)succession of the Godavari Valley Coalfield in southern India based on a combined palynofacies,carbon isotope,and biomarker study显示文摘The study presents integrated palynofacies,organic carbon isotope,and biomarker data to reconstruct palaeoenviromental setting for the Permian sediments(borehole MGK-6)of the Kachinapalli block of the Godavari Valley Coalfield,southern India.The palynofacies data reveal three distinct palynofacies(A-C)as follows.Palynofacies A is dominated by abundant arborescent vegetation(glossopterids and conifers)along with structured organic matter,suggesting freshwater forest swamps in proximal settings.Palynofacies B is dominated by abundant degraded organic matter and amorphous organic matter,suggesting lakeshore/flooded palaeomires in slightly dismal settings.It has a high water level in the hinterland,which enables bacterial degradation of organic matter and establishes low-oxygenation conditions within the water column.These conditions would have provided grounds for the accumulation of either degraded or amorphous organic matter.Palynofacies C is dominated by the abundance of charcoal/opaque phytoclasts,indicating prolonged transportation or postdepositional alteration,suggesting a highly-oxidizing condition in distal settings.The bulk organic δ^(13)C range(-25.1‰ to-20.9‰)in the borehole MGK-6 is in close agreement with the global Permian records.This study also shows a weak but statistically significant correlation with the major forms of palynofacies A and C.The interlinked behaviour of bulk organic δ^(13)C and palynofacies suggests that the changes in palaeobiogeography/palaeodepositional settings were most likely driven by the change in mean annual precipitation.The biomarker study shows the presence of n-alkane from C_(15) to C_(31) with unimodal and bimodal distribution patterns,revealing the source materials as vascular plants and microbially-altered organic matter.The combined palynofacies,organic carbon isotope,and biomarker data provide vital clue to salient findings for the development of environmental conditions of Godavari Valley Coalfield during lower Gondwana sedimentation.Neha Aggarwal Runcie Paul Mathews Arif Husain Ansari Biswajeet Thakur Shailesh Agrawal 2022Journal of Palaeogeography2022,11,1:1
2Cathepsin B: Multiple roles in cancer显示文摘Neha Aggarwal Bonnie F. Sloane 20142014 (5-6)2014,,5:1
3Dynamical Casimir effect in superradiant light scattering by Bose Einstein condensate in an optomechanical cavity显示文摘We investigate the effects of dynamical Casimir effect in superradiant light scattering by Bose–Einstein condensate in an optomechanical cavity.The system is studied using both classical and quantized mirror motions.The cavity frequency is harmonically modulated in time for both the cases.The main quantity of interest is the number of intracavity scattered photons.The system has been investigated under the weak and strong modulations.It has been observed that the amplitude of the scattered photons is more for the classical mirror motion than the quantized mirror motion.Also,initially,the amplitude of scattered photons is high for lower modulation amplitude than higher modulation amplitude.We also found that the behavior of the plots are similar under strong and weak modulations for the quantized mirror motion.Sonam Mahajan Neha Aggarwal Aranya B Bhattacherjee ManMohan 2014Chinese Physics B2014,23,2:0
4Excitations of optomechanically driven Bose Einstein condensates in a cavity: Photodetection measurements显示文摘We present a detailed study to analyze the Dicke quantum phase transition within the thermodynamic limit for an optomechanically driven Bose–Einstein condensate in a cavity. The photodetection-based quantum optical measurements have been performed to study the dynamics and excitations of this optomechanical Dicke system. For this, we discuss the eigenvalue analysis, fluorescence spectrum and the homodyne spectrum of the system. It has been shown that the normal phase is negligibly affected by the mechanical mode of the mirror while it has a significant effect in the superradiant phase. We have observed that the eigenvalues and the spectra both exhibit distinct features that can be identified with the photonic, atomic and phononic branches. In the fluorescence spectra, we further observe an asymmetric coherent energy exchange between the three degrees of freedom of the system in the superradiant phase arising as a result of optomechanical interaction and Bloch–Siegert shift.Neha Aggarwal Sonam Mahajan Aranya B.Bhattacherjee Man Mohan 2014Chinese Physics B2014,23,10:0
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