http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Krishna Prasad Sharma,Suresh Prashad Bhatta,Ganga Bahadur Khatri,Avinash Pajiyar,Daya Krishna Joshi 강원대학교 산림과학연구소 2020 Journal of Forest Science Vol.36 No.1
Vegetation carbon sequestration and regeneration are the two major parameters of forest research. In this study, we analyzed the vegetation carbon stock and regeneration of community-managed pine plantation of Kathmandu, central Nepal. Vegetation data were collected from 40 circular plots of 10 m radius (for the tree) and 1m radius (for seedling) applying a stratified random sampling and nested quadrat method. The carbon stock was estimated by Chave allometric model and estimated carbon stock was converted into CO2 equivalents. Density-diameter (d-d) curve was also prepared to check the regeneration status and stability of the plantation. A d-d curve indicates the good regeneration status of the forest with a stable population in each size class. Diversity of trees was very low, only two tree species Pinus roxburghii and Eucalyptus citriodora occurred in the sample plots. Pine was the dominant tree in terms of density, basal area, biomass, carbon stock and CO2 stock than the eucalyptus . The basal area, carbon stock and CO2 stock of forest was 33±1.0 m2 ha-1, 108±5.0 Mg ha-1 and 394±18 Mg ha-1, respectively. Seedling and tree density of the plantation was 4,965 ha-1 and 339 ha-1 respectively. The forest carbon stock showed a positive relationship with biomass, tree diameter, height and basal area but no relationship with tree density. Canopy cover and tree diameter have a negative effect on seedling density and regeneration. In conclusion, the community forest has a stable population in each size class, sequestering a significant amount of carbon and CO2 emitted from densely populated Kathmandu metro city as the forest biomass hence have a potentiality to mitigate the global climate change.
Krishna Prasad Sharma,Suresh Prashad Bhatta,Ganga Bahadur Khatri,Avinash Pajiyar,Daya Krishna Joshi 강원대학교 산림과학연구소 2020 Journal of Forest Science Vol. No.
Vegetation carbon sequestration and regeneration are the two major parameters of forest research. In this study, we analyzed the vegetation carbon stock and regeneration of community-managed pine plantation of Kathmandu, central Nepal. Vegetation data were collected from 40 circular plots of 10 m radius (for the tree) and 1m radius (for seedling) applying a stratified random sampling and nested quadrat method. The carbon stock was estimated by Chave allometric model and estimated carbon stock was converted into CO2 equivalents. Density-diameter (d-d) curve was also prepared to check the regeneration status and stability of the plantation. A d-d curve indicates the good regeneration status of the forest with a stable population in each size class. Diversity of trees was very low, only two tree species Pinus roxburghii and Eucalyptus citriodora occurred in the sample plots. Pine was the dominant tree in terms of density, basal area, biomass, carbon stock and CO2 stock than the eucalyptus. The basal area, carbon stock and CO2 stock of forest was 33±1.0 m2 ha-1, 108±5.0 Mg ha-1 and 394±18 Mg ha-1, respectively. Seedling and tree density of the plantation was 4,965 ha-1 and 339 ha-1 respectively. The forest carbon stock showed a positive relationship with biomass, tree diameter, height and basal area but no relationship with tree density. Canopy cover and tree diameter have a negative effect on seedling density and regeneration. In conclusion, the community forest has a stable population in each size class, sequestering a significant amount of carbon and CO2 emitted from densely populated Kathmandu metro city as the forest biomass hence have a potentiality to mitigate the global climate change.
Krishna Nath,이춘환,Susheel Kumar,Roshan Sharma Poudyal,양영남,Rupak Timilsina,박유신,Jayamati Nath,Puneet Singh Chauhan,Bijaya Pant 한국유전학회 2014 Genes & Genomics Vol.36 No.1
Superoxide dismutase (SOD) isoenzymes areessential for scavenging excess reactive oxygen species inliving organisms. So far, expression pattern of SOD isoenzymesgenes along leaf development plus their sub-cellularlocalization and physical interaction network have notyet been clearly elucidated. Using multiple bioinformaticstools, we predicted the sub-cellular localizations of SODisoforms and described their physical interactions in rice. Using in silico approaches, we obtained several evidencesfor existence of seven SOD genes and a SOD copperchaperone gene. Their transcripts were differentiallyexpressed along with different developmental stage of riceleaf. Finally, we performed quantitative real time-polymerasechain reaction (qRT-PCR) to validate in silico differential expression pattern of SOD genes experimentally. Expression of two cytosolic cCuZn-SODs was highduring the whole vegetative stage. Two plastidic Fe-SODswere found and their expression levels were very low andstarted to increase from the late vegetative stage. Theirexpression patterns were very similar to each other, indicatingthe formation of heterodimer. However, theirexpression patterns are different from those for ArabidopsisFe-SODs. The expression of pCuZn-SOD was very high inthe early developmental stage, but qRT-PCR results weredifferent, which remains for further study. From the resultson the differential expression of SOD genes, we canunderstand the role of each SOD gene and even predicttheir role under certain circumstances based on in silicoanalysis.
( Bimala Sharma ),( Bishnu Raj Tiwari ),( Gyanendra Bikram Shah ),( Krishna Gurung ),( Mamita Khaling Rai ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1
Aims: The study aimed to assess the seroprevalence and risk perception of hepatitis B virus (HBV) and hepatitis C virus (HCV) among voluntary blood donors in the Western Region of Nepal. Methods: A total of 13,079 voluntary blood donors aged 18- 60 years attending from July, 2016 to June, 2017 were enrolled in the study. Perceived risk of HBV and HCV was measured by Likert-type scale: ‘no risk’, ‘little’, ‘moderate’, ‘high’ and ‘very high’ risk, ranging from 1 to 5. Blood samples were analyzed for the presence of HBsAg and HCV antibodies by ELISA at Western Regional Blood Transfusion Service Center. Proportion, mean, chi-square test and independent samples t-test were applied for statistical analysis. Results: Of the total, 83.8% participants were males; 88.2% were married; and mean age of the participants was 30.0 years. Seroprevalece of HBV was 0.3% in the total samples; 0.3% among males and 0.2% among females; and 0.5% among unmarried donors. Seroprevalece of HCV was 0.1% in the total; 0.1% among males and one case among females; 0.2% among unmarried; and 0.2% among those who ever pierced tattoo. No significant difference was observed in the seroprevalence of HBV and HCV among those who reported having multiple sexual partners and single sexual partner; and among Tattoo piercing and non-piercing respondents (P>0.05). Mean risk perception of HBV was slightly greater (x¯, 2.75; SD, ±1.24) than that of HCV (x¯, 2.68; SD, ±1.22). The mean risk perception of both types did not differ significantly across gender, age, marital status; and having multiple sexual partners and tattoo piercing practices (P>0.05). Conclusions: The study revealed low seroprevalence and low risk perception of HBV and HCV among voluntary blood donors in Western Nepal. Although the seroprevalence is low among voluntary blood donors, there might be higher prevalence of HBV and HCV in the community.
Nath, Krishna,Elizabeth, John,Poudyal, Roshan Sharma,Ko, Su Yeon,Lim, Woon Ki,Lee, Choon-Hwan Korean Society of Photoscience 2013 Rapid communication in photoscience Vol.2 No.1
The photosystem II (PSII) light harvesting complex (LHC) consists of a variety of pigment protein complexes which are involved in structural organization and regulation of photosynthetic unit. These LHC proteins encoded by a group of Lhcb genes are essential for the structural integrity of PSII supercomplex, the channeling the excitation energy to the reaction center of PSII and its redistribution to photosystem I by state transitions. Numerous studies with the help of recent technological advancements have enabled a significant progress in our understanding on the structure of PSII-LHCII supercomplexes and their mobilization under various light conditions. Here, we present a mini-review on the latest concepts and models depicting the structure of PSII-LHCII supercomplexes and the role of Lhcb proteins in their supra-molecular organization. Also we will review on the current understandings and remaining problems involved in the mobilization of the supercomplexes during state transitions and during high light illumination for controlling light energy distribution between the two photosystems.