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您的检索式：作者名="Dipak Gupta"
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| 1 | Photocatalytic reduction of organic pollutant under visible light by green route synthesized gold nanoparticles显示文摘We report a rapid method of green chemistry approach for synthesis of gold nanoparticles(AuNPs)using Lagerstroemia speciosa leaf extract(LSE). L. speciosa plant extract is known for its effective treatment of diabetes and kidney related problems. The green synthesis of Au NPs was complete within 30 min at 25°C. The same could also be achieved within 2 min at a higher reaction temperature(80°C). Both UV–visible spectroscopy and transmission electron microscopy results suggest that the morphology and size distribution of Au NPs are dependent on the pH of gold solution,gold concentration,volume of LSE,and reaction time and temperature. Comparison between Fourier transform infrared spectroscopy(FT-IR)spectra of LSE and the synthesized Au NPs indicate an active role of polyphenolic functional groups(from gallotannins,lagerstroemin,and corosolic acid)in the green synthesis and capping of Au NPs. The green route synthesized Au NPs show strong photocatalytic activity in the reduction of dyes viz.,methylene blue,methyl orange,bromophenol blue and bromocresol green,and 4-nitrophenol under visible light in the presence of Na BH_4. The non-toxic and cost effective LSE mediated Au NPs synthesis proposed in this study is extremely rapid compared to the other reported methods that require hours to days for complete synthesis of Au NPs using various plant extracts. Strong and stable photocatalytic behavior makes Au NPs attractive in environmental applications,particularly in the reduction of organic pollutants in wastewater. | Bharat C.Choudhary Debajyoti Paul Tarun Gupta Sandesh R.Tetgure Vaman J.Garole Amulrao U.Borse Dipak J.Garole | 2017 | Journal of Environmental Sciences2017，29，5： | 2 |
| 2 | Income Distri- bution and Socio-Political Instability as Determinants of Savings: A Cross- Sectional Model 显示文摘 | YANNIS VENIERIS DIPAK GUPTA | 1986 | The Journal of Political Economy1986，94，4： | 1 |
| 3 | Mapping ideas from cyberspace to realspace: visualizing the spatial context of keywords from web page search results显示文摘We introduce a new method for visualizing and analyzing information landscapes of ideas and events posted on public web pages through customized web-search engines and keywords.This research integrates GIScience and web-search engines to track and analyze public web pages and their web contents with associated spatial relationships.Web pages searched by clusters of keywords were mapped with real-world coordinates(by geolocating their Internet Protocol addresses).The resulting maps represent web information landscapes consisting of hundreds of populated web pages searched by selected keywords.By creating a Spatial Web Automatic Reasoning and Mapping System prototype,researchers can visualize the spread of web pages associated with specific keywords,concepts,ideas,or news over time and space.These maps may reveal important spatial relationships and spatial context associated with selected keywords.This approach may provide a new research direction for geographers to study the diffusion of human thought and ideas.A better understanding of the spatial and temporal dynamics of the‘collective thinking of human beings’over the Internet may help us understand various innovation diffusion processes,human behaviors,and social movements around the world. | Ming-Hsiang Tsou Ick-Hoi Kim Sarah Wandersee Daniel Lusher Li An Brian Spitzberg Dipak Gupta Jean Mark Gawron Jennifer Smith Jiue-An Yang Su Yeon Han | 2014 | International Journal of Digital Earth2014，7，4： | 1 |
| 4 | Corrigendum to “Tillage and residue management effects on soil aggregation, organic carbon dynamics and yield attribute in rice–wheat cropping system under reclaimed sodic soil” [Soil Till. Res. 136 (2014) 76–83]显示文摘 | Shreyasi Gupta Choudhury Sonal Sivastava Ranbir Singh S.K. Chaudhari D.K. Sharma S.K. Singh Dipak Sarkar | 2014 | Soil & Tillage Research2014，，： | 1 |
| 5 | Logit demand estimation under competitive pricing behavior: An Equilibrium Framework 显示文摘 | Besanko D Gupta S Dipak J | 1998 | Management Science1998，44，11： | 1 |
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