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RISS 인기검색어
- 검색키워드
- 저자 : Jagannath Roy (검색결과 3 건)
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The synthesis and applications of TiO2 nanoparticles derived from phytochemical sources
Jagannath Roy 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.106 No.-
Nano sized materials have gathered significant attention during the last few decades due to their uniquechemical, physical, electrical, optical and mechanical properties. Titanium dioxide (TiO2) is non-toxic andhas good corrosion resistance, high chemical and thermal stability. TiO2 has a wide range of applicationsincluding as photocatalysts, in solar cells, self-cleaning surfaces, wastewater treatment and as an antimicrobialagent. A number of methods have been implemented for the synthesis of TiO2 nanoparticles andamong these, so-called ‘green’ approaches, for example those that employ renewable resources and/orrequire low energy input, are attractive because they can be cost-effective, less hazardous and environmentallysustainable. This review explores recent advances in the synthesis of TiO2 nanoparticles derivedfrom phytochemical sources and benchmarks their performance in a range of applications against nano-TiO2 produced by more conventional methods.
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Sharma, Jagannath Dev,Kalita, Manoj,Barbhuiya, Jamil Ahmed,Lahon, Ranjan,Sharma, Arpita,Barman, Debanjana,Kataki, Amal Chandra,Roy, Barsha Deka Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.15
Background: The global burden of cancer is continuously increasing. According to recent report of the National Cancer Registry Programme (NCRP) on time trends it is estimated that future burden of cancer cases for India in 2020 will be 1,320,928. It is well known that knowledge of the incidence of cancer is a fundamental requirement of rational planning and monitoring of cancer control programs. It would help health planners to formulate public health policy if relevant ethnic groups were considered. North East-India alone contains over 160 Scheduled Tribes and 400 other sub-tribal communities and groups, whose cancer incidence rates are high compared to mainland India. As since no previous study was done focusing on ethnicity, the present investigation was performed. Materials and Methods: In this paper PBCR-Guwahati data on all cancer registrations from January 2009 to December 2011 for residents of the Kamrup Urban District, comprising an area of 261.8 sq. km with a total population of 900,518, including individual records with information on sex, age, ethnicity and cancer site are provided. Descriptive statistics including age adjusted rates (AARs) were taken as provided by NCRP. For comparison of proportional incidence ratios (PIR) the Student's t test was used, with p<0.05 considered as statistically significant. Results and Conclusions: Differences in leading sites of Kamrup Urban District since from the beginning of the PBCR-Guwahati were revealed among different ethnic groups by this study. The results should help policy makers to formulate different strategies to control the level of burden as well as for treatment planning. This study also suggests that age is an important factor of cancer among different ethnic populations as well as for overall population of Kamrup District of Assam.
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Hazarika, Munlima,Iqbal, Asif,Krishnatreya, Manigreeva,Sharma, Jagannath Dev,Bhuyan, Chidananda,Saikia, Bhargab Jyoti,Roy, Partha Sarathi,Das, Rashmi,Nandy, Pintu,Kataki, Amal Chandra Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.7
There is paucity of data on non Hodgkin's lymphoma (NHL) from our population in North-East India. In this retrospective study, patients were consecutively followed-up to see the clinic-pathological pattern of NHL, various responses, and pattern of relapses to first line treatment with chemotherapy. All patients in the present study received standard regimen of cyclophosphamde, doxorubicin, vincristine, prednisolone (CHOP) with or without rituximab (R-CHOP) as per our institutional protocol as first line therapy. Our study has shown that, in our adult population, the majority of NHL cases present with stage II and stage III disease and extra nodal involvement, B-cell lymphomas and diffuse large cell lymphomas being the most common subtypes. International prognostic index was a significant factor for varied responses to treatment. The majority of relapses after complete remission occurred in the first year.
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