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| 1 | Seasonal Inhomogeneity of Soot Particles over the Central Indo-Gangetic Plains,India:Influence of Meteorology显示文摘Black carbon(BC) particles play a unique and important role in earth's climate system.BC was measured(in-situ) in the central part of the Indo-Gangetic Plains(IGP) at Varanasi,which is a highly populated and polluted region due to its topography and extensive emission sources.The annual mean BC mass concentration was 8.92 ± 7.0 μg m^(-3),with 34%of samples exceeding the average value.Seasonally,BC was highest during the post-monsoon and winter periods(approximately 18 μg m^(-3)) and lower in the premonsoon/monsoon seasons(approximately 6 μg m^(-3)).The highest frequency(approximately 46%) observed for BC mass was in the interval from 5 to 10 μg m^(-3).However,during the post-monsoon season,the most common values(approximately 23%) were between 20 and 25 μg m^(-3).The nighttime concentrations of BC were approximately twice as much as the daytime values because of lower boundary layer heights at nighttime.The Angstrom exponent was significantly positively correlated(0.55) with ground-level BC concentrations,indicating the impact of BC on the columnar aerosol properties.The estimated mean absorption Angstrom exponent was 1.02 ± 0.08 μg m^(-3),indicating that the major source of BC was from fossil fuel combustion.Significant negative correlations between BC mass and meteorological parameters indicate a pronounced effect of atmospheric dynamics on the BC mass in this region.The highest mean BC mass concentration(18.1 ± 6.9 μg m^(-3)) as a function of wind speed was under calm wind conditions(38%of the time). | SINGH B.P. TIWARI S. HOPKE Philip K. SINGH R.S. BISHT D.S. SRIVASTAVA A.K. SINGH R.K. DUMKA U.C. SINGH A.K. RAI B.N. SRIVASTAVA Manoj K. | 2015 | Journal of Meteorological Research2015，29，6： | 3 |
| 2 | Contamination of liquid milk and butter with pesticide residues in the Ludhiana district of Punjab state, India显示文摘 | R.S. Battu Balwinder Singh B.K. Kang | 2003 | Ecotoxicology and Environmental Safety2003，，3： | 1 |
| 3 | Synthesis and Characterization of Chemically Deposited Nanocrystalline CdSe Thin Film显示文摘 | AjayaKumar Singh SoumyaR. Deo GautamSheel Thool R.S. Singh Y.R. Katre Ashish Gupta | 2011 | Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry2011，，10： | 1 |
| 4 | Luminescence, lifetime and quantum yield studies of YVO 4 :Ln 3+ (Ln 3+显示文摘 | N. Shanta Singh R.S. Ningthoujam M. Niraj Luwang S. Dorendrajit Singh R.K. Vatsa | 2009 | Chemical Physics Letters2009，，4： | 1 |
| 5 | Phenolic composition, antioxidant and antimicrobial activities of free and bound phenolic extracts of Moringa oleifera seed flour显示文摘 | R.S. Govardhan Singh Pradeep S. Negi C. Radha | 2013 | Journal of Functional Foods2013，，4： | 1 |
| 6 | Closed-form solutions for two anti-plane collinear cracks in a magnetoelectroelastic layer显示文摘 | B.M. Singh J. Rokne R.S. Dhaliwal | 2008 | European Journal of Mechanics / A Solids2008，，3： | 1 |
| 7 | Characteristics of yeast lectins and their role in cell–cell interactions显示文摘 | R.S. Singh Ranjeeta Bhari Hemant Preet Kaur | 2011 | Biotechnology Advances2011，，6： | 1 |
| 8 | Ecological features of Aconitum balfourii (Bruhl) Muk.-an endangered medicinal plant in the northwest Himalaya显示文摘Aconitum balfourii (Bruhl) Muk. (Ranunculaceae) is an endangered medicinal plant. Natural populations were surveyed in the northwest Himalaya for population estimation and evaluation of elite germplasm. Vegetation sampling of quadrats was conducted using the vertical belt transect method in areas supporting A. balfourii. Plant density and relative dominance of A. balfourii were low compared with other alpine species. Threat status was determined on a site-by-site basis as well as for entire western Himalaya. A. balfourii was generally classified as endangered on the basis of geographic distribution and critically endangered on the basis of abundance. We found the natural geographic distribution of A. balfourii to be diminishing due to habitat destruction. Immediate corrective management measures are needed for sustainable utilization and long-term conservation of the species in the wild. | Bhuwendra Singh R.S. Chauhan Rajiv K. Vashistha M. C. Nautiyal P. Prasad | 2012 | Journal of Forestry Research2012，23，1： | 0 |
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