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Potential suitable habitat of Buckwheat (Fagopyrum spp) under the climate change scenarios in Nepal
Dol Raj Luitel,Siwakoti Mohan,Mohan D. Joshi,Rangaswami Muniappan,Pramod K. Jha 한국작물학회 2021 Journal of crop science and biotechnology Vol.24 No.4
Buckwheat is minor crop of Nepal. Due to their multiple uses, short growing periods, high nutritional and medicinal values, wide adaptability has become popular not only to researcher but also for farmers and consumers globally. It grows in a wider range from low land Terai to higher mountains of Nepal. Maxent modelling was used to quantify the current suitable habitat and predicted future suitable area under diferent climate change scenarios, based on representative concentration pathways (RCP 4.5 and 8.5) in two diferent time periods (2050 and 2070 AD) using climatic predictive variables and species localities. The most suitable habitat area of cultivation, area loss, and gained for buckwheat were determined. The model showed that about 46% area of country is climatically suitable for buckwheat within the elevation range of 289–4441 m. Habitat suitability of buckwheat would shrink by 7.5% and 8.2% under RCPs 4.5 and by 7.6% and 8.3% under 8.5 RCPs in the year 2050 and 2070, respectively. The loss and gain area analysis also indicated that suitable area would be lost more than gained in both 2050 and 2070. These fndings are expected to support planning and policy framing for climatic resilience smart agriculture practice to meet the livelihood and food security problems in the mountains of Nepal. Due to medicinal value of buckwheat, its demands is increasing. The increasing demend of buckwheat would be fulflled by increasing production under climatically suitable area under climate change scenarios.
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A Novel Single-Phase Flying-Inductor Buck-Boost Inverter
Javad Sadeghi Chevinly,Yam P. Siwakoti,Mojtaba Forouzesh,Frede Blaabjerg 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
In this paper a new single-phase flying-inductor buck-boost inverter is proposed. The inverter operates on the principle of flying-inductor, and it has the capability to buck or boost the input voltage without increasing the number of required components. In addition, the inverter is free from electrolytic capacitors, which helps to improve reliability and lifetime of the inverter. The operating principle of the proposed inverter has been analyzed and discussed. Finally, experimental results from a 250 W prototype validates the performance of the proposed topology.
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Ethnic Variation in Consumption of Traditional Tobacco Products and Lung Cancer Risk in Nepal
Raspanti, Greg A,Hashibe, Mia,Siwakoti, Bhola,Wei, Mei,Thakur, Binay Kumar,Pun, Chin Bahadur,Milrod, Charles,Adhikari, Subodh,Lee, Yuan-Chin Amy,Sapkota, Amir Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.14
Lung cancer is the leading contributor to cancer deaths in the developing world. Within countries, significant variability exists in the prevalence of lung cancer risk, yet limited information is available whether some of the observed variability is associated with differences in the consumption pattern of local tobacco products with differing potency. We recruited 606 lung cancer cases and 606 controls from the B.P. Koirala Memorial Cancer Hospital in Nepal from 2009-2012. We estimated odds ratios (ORs) and 95% confidence intervals (CI) for lung cancer risk associated with different tobacco products, using unconditional logistic regression. Unfiltered cigarettes tended to be the most frequently used products across ethnic subgroup with about 53.7% of Brahmins, 60.1% of Chettris, and 52.3% of Rai/Limbu/Magar/others. In contrast, about 39.9% of Madishe/Tharu smokers reported using bidi compared with only 27.7% who smoked unfiltered cigarettes. Among those who only smoked one type of product, choor/kankat smokers had the highest lung cancer risk (OR 10.2; 95% CI 6.2-16.6), followed by bidi smokers (OR 5.6; 95% CI 3.6-8.7), unfiltered cigarettes (OR 4.9; 95% CI 3.4-7.2), and filtered cigarettes (OR 3.4; 95% CI 2.2-5.3). A clear dose-response relationship was observed between increased frequency of smoking and lung cancer risk across all ethnic subgroups. These results highlight the important role of traditional tobacco products on lung cancer risk in the low income countries.
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Malignant Neoplasm Burden in Nepal - Data from the Seven Major Cancer Service Hospitals for 2012
Pun, Chin Bahadur,Pradhananga, Kishore K,Siwakoti, Bhola,Subedi, Krishna,Moore, Malcolm A Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.18
In Nepal, while no population based cancer registry program exists to assess the incidence, prevalence, morbidity and mortality of cancer, at the national level a number of hospital based cancer registries are cooperating to provide relevant data. Seven major cancer diagnosis and treatment hospitals are involved, including the BP Koirala Memorial Cancer hospital, supported by WHO-Nepal since 2003. The present retrospective analysis of cancer patients of all age groups was conducted to assess the frequencies of different types of cancer presenting from January 1st to December 31st 2012. A total of 7,212 cancer cases were registered, the mean age of the patients being 51.9 years. The most prevalent age group in males was 60-64 yrs (13.6%), while in females it was 50-54 yrs (12.8%). The commonest forms of cancer in males were bronchus and lung (17.6%) followed by stomach (7.3%), larynx (5.2%) and non Hodgkins lymphoma (4.5%). In females, cervix uteri (19.1%) and breast (16.3%), were the top ranking cancer sites followed by bronchus and lung (10.2%), ovary (6.1%) and stomach (3.8%). The present data provide an update of the cancer burden in Nepal and highlight the relatively young age of breast and cervical cancer patients.
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