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| 1 | Chemical composition,antioxidant and antibacterial activities of essential oil and methanol extract of Artemisia vulgaris and Gaultheria fragrantissima collected from Nepal显示文摘Objective: To identify the chemical constituents and biological activities of essential oil and crude methanol extract of Artemisia vulgaris(A.vulgaris) and Gaultheria fragrantissima(G.fragrantissima).Methods: Phytochemical screening, total phenolic and flavonoid content, antibacterial activities, anti-oxidant assay of the crude extract were carried out to identify the biological activities and phytonutrients present in the extract.Furthermore, the chemical constituents present in the essential oil and crude methanol extract were analyzed using gas chromatography mass spectroscopy and high performance liquid chromatography(HPLC) analysis.Results: Gas chromatography mass spectroscopy analysis of essential oil from the aerial part of A.vulgaris revealed 24 different compounds in it.Sabinene(11.29%), b-thujone(19.19%), chrysanthenone(4.48%), camphor(11.89%), borneol(4.44%) and germacrene D(8.42%) were the major compounds.Similarly, leaves of G.fragrantissima contained methyl salicylate(95%) and asarone(4.64%).Furthermore, methanol extract of leaves of A.vulgaris and G.fragrantissima were found rich in the total flavonoids and phenolic content.HPLC analysis of the methanol extract of leaves A.vulgaris revealed the presence of morin and luteolin, whereas rutin was found as a major flavonoids compound in the leaves of G.fragrantissima.Further, methanol extract of the A.vulgaris and G.fragrantissima showed the highest antioxidant and antibacterial properties compared to the essential oil.Conclusions: The HPLC analysis of the methanol extract of A.vulgaris shows the presence of luteolin and morin, whereas G.fragrantissima reveals the presence of rutin and a glycosylated flavonoids.Results reveal that A.vulgaris oil is the rich source of monoterpene and sesquiterpene compounds.Furthermore, A.vulgaris and G.fragrantissima are the rich source of the phenolic and flavonoids compounds and show good antioxidant and antibacterial activity. | Bishnu Prasad Pandey Rupak Thapa Anil Upreti | 2017 | Asian Pacific Journal of Tropical Medicine2017，10，10： | 8 |
| 2 | Using the discrete element method to assess the mixing of polydisperse solid particles in a rotary drum显示文摘 | Basel Alchikh-Sulaiman Meysam Alian Farhad Ein-Mozaffari Ali Lohi Simant R. Upreti | 2016 | Particuology2016，14，2： | 8 |
| 3 | Plant endemism in the Nepal Himalayas and phytogeographical implications显示文摘Nepal is located in the central part of the greater Himalayan range with a unique series of mountain chains formed by recent mountain building geological events. As one of the youngest mountains in the world it contributes to diversity of plants and also provided barriers to and corridors through which plants migrated during the ice ages. The higher altitudinal variation with the high mountains, deep river valleys and lowland plains combine with the effects of the summer monsoon and dry winter result with an extraordinary diversity of ecosystems including flora and fauna in a relatively small land area. The existing checklists for Nepal record some 6000 species of flowering plants and about 530 ferns. However, the botanical experts estimate that numbers may go up to 7000 when the poorly known remote regions are fully explored. The information on plant endemism in Nepal Himalaya is not adequately known as Nepal is still struggling to complete long awaited Flora of Nepal project. Endemic species are confined to specific areas and are the first to be affected by land use and other global changes. We sought to explore the spatial distribution of endemic plant species in Nepal in relation to the consequences associated with climatic and geologic changes over time in the region with the help of published literature. It was found that the endemism showed marked spatial variation between open moist habitat and dry inner valleys, the former with higher endemism. The updated records showed 312 flowering plant species to be endemic to Nepal with higher endemism around the elevation of 3800e4200 m at sea level. The recent human population explosion, intensified deforestation, habitat fragmentation and modern day environmental changes are posing greater threats to endemic plant in Nepal. The conservation status and threats to these peculiar species are unknown. Nevertheless, environmental degradation and high poverty rates create a potent mix of threats to biodiversity in this landscape. | Achyut Tiwari Yadav Uprety Santosh Kumar Rana | 2019 | Plant Diversity2019，41，3： | 5 |
| 4 | 基于简易微波方法制备高性能MoS2/石墨烯纳米复合材料用于高效析氢反应(英文)显示文摘用于析氢反应(HER)的低成本、高效能催化剂对于推进基于清洁氢气的能源工业非常重要.二维二硫化钼(MoS2)具有显著的催化性能,因而已被人们广泛深入研究.然而,大多数现有的合成方法耗时、复杂且效率较低.本文通过超快(60秒)微波引发的方法生产MoS2/石墨烯催化剂.石墨烯的高比表面积和导电性为MoS2纳米片的生长提供了有利的导电网络和快速电荷转移动力.文中制备的MoS2/石墨烯纳米复合材料在酸性介质中对HER表现出优异的电催化活性,具有62 mV的低起始电位,高阴极电流和43.3mV/dec的Tafel斜率.除了优异的催化活性外, MoS2/石墨烯还具有较长的循环稳定性,在250 mV的过电位下阴极电流密度高达1000 mA cm^-2.此外, MoS2/石墨烯催化剂在30–120°C范围内具有出色的HER活性和36.51 kJ mol^-1的低活化能,提供了潜在的大批量生产和制备的机会. | Shatila Sarwar Amit Nautiyal Jonathan Cook 袁一斐 李俊豪 Sunil Uprety Reza Shahbazian-Yassar 王瑞刚 Minseo Park Michael J.Bozack 张新宇 | 2020 | Science China Materials2020，63，1： | 4 |
| 5 | Setting priorities for conservation of medicinal plants –– a case study in the Indian Himalaya显示文摘 | Uppeandra Dhar Ranbeer S Rawal Jyoti Upreti | 2000 | Biological Conservation2000，，1： | 2 |
| 6 | Concentration of trace elements in arable soil after long-term application of organic and inorganic fertilizers显示文摘 | Dharam Uprety Michal Hejcman Ji?ina Száková Eva Kunzová Pavel Tlusto? | 2009 | Nutrient Cycling in Agroecosystems2009，，3： | 2 |
| 7 | Evaluation and Exploitation of Retrieval Algorithms for Estimating Biophysical Crop Variables Using Sentinel-2,Venus,and PRISMA Satellite Data显示文摘This paper is devoted to the development and testing of the optimal procedures for retrieving biophysical crop variables by exploiting the spectral information of current multispectral optical satellite Sentinel-2 and Venus and in view of the advent of the new Sino-EU hyperspectral satellite(e.g.,PRISMA,EnMAP,and GF-5).Two different methodologies devoted to the estimation of biophysical crop variables Leaf area index(LAI)and Leaf chlorophyll content(Cab)were evaluated:non-kernel-based and kernel-based Machine Learning Regression Algorithms(MLRA);Sentinel-2 and Venus data comparison for the analysis of the durum wheat-growing season.Results show that for Sentinel-2 data,Gaussian Process Regression(GPR)was the best performing algorithm for both LAI(R 2=0.89 and RMSE=0.59)and Cab(R 2=0.70 and RMSE=8.31).Whereas,for PRISMA simulated data the Kernel Ridge Regression(KRR)was the best performing algorithm among all the other MLRA(R 2=0.91 and RMSE=0.51)for LAI and(R 2=0.83 and RMSE=6.09)for Cab,respectively.Results of Sentinel-2 and Venus data for durum wheat-growing season were consistent with ground truth data and confirm also that SWIR bands,which are used as tie-points in the PROSAIL inversion,are extremely useful for an accurate retrieving of crop biophysical parameters. | Raffaele CASA Deepak UPRETI Angelo PALOMBO Simone PASCUCCI Hao YANG Guijun YANG Wenjiang HUANG Stefano PIGNATTI | 2020 | Journal of Geodesy and Geoinformation Science2020，3，4： | 2 |
| 8 | Effects of chromium on the immune system显示文摘 | Shrivastava R Upreti R K Seth P K | 2002 | FEMS Immunol Med Microbiol2002，34，1： | 1 |
| 9 | Regulation of transcription through light-activation and light-deacti- vation of triplex-forming oligonucleotides in mammalian ceils 显示文摘 | Govan J Uprety R Hemphill J | 2012 | Chem Biol2012，7，： | 1 |
| 10 | Can Vanadium Be Substituted into LiFePO4 ? 显示文摘 | Omenya F Chernova N Upreti S | 2011 | Chemistry of Materials2011，23，： | 1 |
| 11 | Mechanism of 3,4-methylenedioxymethamphetamine(MDMA,ecstasy)-mediated mitochondrial dysfunction in rat liver显示文摘 | Moon K H Upreti V V Yu L R | 2008 | Proteomics2008，8，18： | 1 |
| 12 | Spectrum ofneurological manifestations of idiopathic hypoparathyroid-ism and pseudohypoparathyroidism 显示文摘 | Bhadada S K Bhansali A Upreti V | 2011 | Neurol India2011，59，4： | 1 |
| 13 | Suboptimal chlorine treatment of drinking water leads to selection of multidrug-resistant Pseudomonas acruginosa显示文摘 | Richa Shrivastava R K Upreti SR Ain | 2004 | Ecotoxicology and Environmental Safety2004，58，： | 1 |
| 14 | Effects of elevated CO2 and moisture stress on Brassicajuncea显示文摘 | Rabha B K Uprety D C | 1998 | Photosynthetica1998，35，： | 1 |
| 15 | Imaging of pancreatic serous cystadenocarcinoma 显示文摘 | Bano S Upreti L Puri SK | 2011 | Jpn J Radiol2011，29，10： | 1 |
| 16 | Chemical and biological extraction of metals present in E waste: A hybrid technology 显示文摘 | PANT D JOSHI D UPRETI M K KOTNALA R K | 2012 | Waste Management2012，32，： | 1 |
| 17 | Efficacy and safety of autolo- gous bone marrow derived hematopoietic stem cell transplantation in patients with type 2 DM:a 15 months follow-up study 显示文摘 | Bhansali A Upreti V Walia R | 2014 | Indian J Endocrinol Metab2014，18，6： | 1 |
| 18 | Causative agents of urinary tract infections in children and their antibiotic sensitivity pattern:a hospital based study显示文摘 | Rai GK Upreti HC Rai SK | 2008 | Nepal Med CoUJ2008，10，2： | 1 |
| 19 | Effect of elevated CO2 and nitrogen nutrition on photosynthesis, growth and carbon -nitrogen balance in Brassica juncea显示文摘 | Uprety D C Mahalaxmi V | 2000 | Journal of Agronomy & Crop Science2000，，184： | 1 |
| 20 | Efficacy of autologous bone marrow-derived stem cell transplantation in patients with type 2 diabetes rnellitus显示文摘 | Bhansali A Upreti V Khandelwal N | 2009 | Stem Ceils Dev2009，18，10： | 1 |
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