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排序方式: 共有193条查询结果,搜索用时 130 毫秒
191.
G. Amarendra B.K. Panigrahi S. Abhaya Christopher David R. Rajaraman K.G.M. Nair C.S. Sundar Baldev Raj 《Applied Surface Science》2008,255(1):139-141
The void swelling behavior of heavy ion irradiated D9 steel has been investigated using variable low energy positron beam. The normalized defect-sensitive S-parameter shows up a large increase in the depth region corresponding to the maximum radiation damage as a function of irradiation temperature. From the variation of S-parameter as a function of irradiation temperature, the peak swelling temperature has been deduced and the results are discussed. 相似文献
192.
Anita Gharekhan Ashok N. Oza M. B. Sureshkumar Asima Pradhan Prasanta K. Panigrahi 《Pramana》2010,75(6):1281-1286
Fluorescence characteristics of human breast tissues are investigated through wavelet transform and principal component analysis
(PCA). Wavelet transform of polarized fluorescence spectra of human breast tissues is found to localize spectral features
that can reliably differentiate different tissue types. The emission range in the visible wavelength regime of 500–700 nm
is analysed, with the excitation wavelength at 488 nm using laser as an excitation source, where flavin and porphyrin are
some of the active fluorophores. A number of global and local parameters from principal component analysis of both high- and
low-pass coefficients extracted in the wavelet domain, capturing spectral variations and subtle changes in the diseased tissues
are clearly identifiable. 相似文献
193.
Sorna Prava Barik Kamal L. Panigrahi Manoranjan Samal 《The European Physical Journal C - Particles and Fields》2018,78(11):882
We discuss semiclassical quantization of circular pulsating strings in \( \text {AdS}_3 \times \text {S}^3 \) background with and without the Neveu-Schwarz–Neveu-Schwarz (NS–NS) flux. We find the equations of motion corresponding to the quadratic action in bosonic sector in terms of scalar quantities and invariants of the geometry. The general equations for studying physical perturbations along the string in an arbitrary curved spacetime are written down using covariant formalism. We discuss the stability of these string configurations by studying the solutions of the linearized perturbed equations of motion. 相似文献