Zobrazeno 1 - 10
of 25
pro vyhledávání: '"C K Varshney"'
Autor:
Chandra Singh Negi, C. K. Varshney
Publikováno v:
Environment Conservation Journal, Vol 4, Iss 1-3 (2003)
This paper deals with the effect of urban air pollution on oxygen evolution by common tropical avenue tree species growing along three important traffic corridors in the capital city of Delhi. Oxygen evolution was measured using Clark-type Hansatech
Externí odkaz:
https://doaj.org/article/b2bde000400e43279b7f1770f570592f
Publikováno v:
Journal of Applied and Natural Science. 2:13-16
In the present investigation on the effect of nitrogen treatments on emission of isoprene from Ficus glomerata has been evaluated. Four sets of plants were treated with following four doses of nitrogen in the form of ammonium nitrate solution (i) 10
Publikováno v:
Journal of Fruit and Ornamental Plant Research. 72:35-48
Effect of Ozone Exposure on Growth, Yield and Isoprene Emission from Tomato (Lycopersicon esculentum L.) Plants Effect of ozone on three different growth phase of tomato (Lycopersicon esculentum cv. Pusa ruby) crop namely, Early Vegetative Phase (EVP
Autor:
C K Varshney
Publikováno v:
Proceedings of Indian National Science Academy, Vol 34, Iss 1B (2015)
Autecology of Aristida adscensionis Linn
Autor:
C. K. Varshney, Abhai Pratap Singh
Publikováno v:
Environmental Monitoring and Assessment. 122:145-151
Tropical and sub tropical regions are regarded as dominant source of biogenic volatile organic compounds emission (BVOC). However, measurement studies from these regions are limited and largely confined to South Africa and Amazonia. Consequently, glo
Autor:
C. K. Varshney, Abhai Pratap Singh
Publikováno v:
The Environmentalist. 23:127-136
Nitrogen oxide is an important gaseous air pollutant. It plays a major role in atmospheric chemistry, particularly in the formation of secondary air pollutants such as ozone, peroxyacyl nitrate (PAN), nitrate aerosols, and contributes to environmenta
Autor:
Arun K. Attri, C. K. Varshney
Publikováno v:
Tellus B; Vol 51, No 3 (1999)
The source of carbon in biogenic methane comes from the active carbon pool. Transformation of carbon into methane, through biogenic cycling of carbon implies that the global warming (GW) contributed by biogenic methane inherits the GW of CO 2 . For a
Autor:
C. K. Varshney, Indrani Mitra
Publikováno v:
International Journal of Environmental Studies. 49:13-21
Ethylene emission, ascorbic acid content, peroxidase and superoxide dismutase activity were measured in four tropical tree species. Six month old saplings of Morus alba Linn., Azadirachta indica A. Juss., Melia azadirach Linn, and Syzygium jambolina
Autor:
Indrani Mitra, C. K. Varshney
Publikováno v:
Landscape and Urban Planning. 25:85-93
Roadside hedges planted primarily for aesthetic purposes attenuate noise, improve the micro-climate and effectively reduce particulate pollution. The particulate abatement capacity (PAC) of three commonly grown hedge species, Bougainvillea spectabili
Autor:
Maneesha Aggarwal, C. K. Varshney
Publikováno v:
Environmental Monitoring and Assessment. 25:41-49
Measurements of ozone in the urban environment of Delhi were carried out at ground level and heights of 23m, 51m, 117m and 153m at four different sites synoptically during 1989-90. A considerable ozone build up was observed all over Delhi and a signi