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- 검색키워드
- 저자 : Durgaprasad (검색결과 3 건)
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Datta, Karabi,Roy, Asoke,Nanda, Durgaprasad,Das, Ila,Guha, Subhas,Ghosh, Dipanwita,Sikdar, Samar,Biswas, Jaydip Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.20
The rising trend of breast cancer both in developed and developing countries is a real threat challenging all efforts to screening, prevention and treatment aspects to reduce its impact. In spite of modern preventive strategies, the upward trend of breast cancer has become a matter of great concern in both developed and developing countries. Chittaranjan National Cancer Institute is a premier regional cancer institute in eastern region of India catering to a large number of cancer patients every year. A pilot case control study of fifty breast cancer patients and 100 matched controls was conducted during 2013 to evaluate the effects of habitual factors like working in night shift, not having adequate sleep, and not sleeping in total darkness on breast cancer of women. The study revealed that not sleeping in total darkness was associated with higher odds of outcome of breast cancer of women. This positive correlation can play a vital role in formulation of preventive strategies through life style modification.
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Suman Paik,N. Naveen Kumar,B. K. Dutta,R. Tewari,P. V. Durgaprasad 대한금속ᆞ재료학회 2023 METALS AND MATERIALS International Vol.29 No.2
This article investigates the deformation behaviour and fracture characteristics of copper single crystals by uniaxial tensileexperiments and compares the results with crystal plasticity simulations. Quasi-static tensile tests were carried out toinclude different stress–strain states by varying the crystal orientation with respect to specimen axis after determining theinitial orientation by Electron Backscatter Diffraction. The different ductile modes of failure of single crystals due to shearafter loading were examined. Thereafter, by employing the scanning electron microscopy and theoretical slip trace analysis,orientations of slip traces of deformed crystals were determined. Experimental results were then rationalised by performingcrystal plasticity finite element simulations, presuming cross-slip and associated dislocation dissociation into partials playan influential role on the orientation dependence of the material. A continuum ductile damage criterion was coupled withplasticity on capturing the slip localisation caused by material softening. Comparison between experimentally measuredand numerically obtained stress–strain data, texture evolution and fracture angles were subsequently evaluated. An evaluationhas also been made by comparing the identities of active slip modes attained from experiments with that of determinedfrom simulations.
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Suman Paik,N. Naveen Kumar,B. K. Dutta,R. Tewari,P. V. Durgaprasad 대한금속·재료학회 2023 METALS AND MATERIALS International Vol.29 No.3
This article investigates the deformation behaviour and fracture characteristics of copper single crystals by uniaxial tensileexperiments and compares the results with crystal plasticity simulations. Quasi-static tensile tests were carried out toinclude different stress–strain states by varying the crystal orientation with respect to specimen axis after determining theinitial orientation by Electron Backscatter Diffraction. The different ductile modes of failure of single crystals due to shearafter loading were examined. Thereafter, by employing the scanning electron microscopy and theoretical slip trace analysis,orientations of slip traces of deformed crystals were determined. Experimental results were then rationalised by performingcrystal plasticity finite element simulations, presuming cross-slip and associated dislocation dissociation into partials playan influential role on the orientation dependence of the material. A continuum ductile damage criterion was coupled withplasticity on capturing the slip localisation caused by material softening. Comparison between experimentally measuredand numerically obtained stress–strain data, texture evolution and fracture angles were subsequently evaluated. An evaluationhas also been made by comparing the identities of active slip modes attained from experiments with that of determinedfrom simulations.
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