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Author: Wilfrid Jan Publisher: Le Service ISBN: Category : Air Languages : en Pages : 90
Book Description
Total lead emissions into the atmosphere is 1978 were estimated at 14 534 tonnes. The largest contributor was, as in the 1970 inventory, the gasoline-powered motor vehicle for on-road uses, which accounted for 63.0% of the total. However the magnitude of lead emissions form this sector has declined since 1970 (form 12780 tonnes to 9 154 tonnes) as a result othe increased use of lead-free gasoline and the implementation of regulation of fuel additives in gasoline by Envisonment Canada. Production of primary copper and nickel accounted for 16.0%, and mining, milling and contrating of lead-bearing ores for a further of 6.6% of the lead emissions in 1978.
Author: Wilfrid Jan Publisher: Le Service ISBN: Category : Air Languages : en Pages : 90
Book Description
Total lead emissions into the atmosphere is 1978 were estimated at 14 534 tonnes. The largest contributor was, as in the 1970 inventory, the gasoline-powered motor vehicle for on-road uses, which accounted for 63.0% of the total. However the magnitude of lead emissions form this sector has declined since 1970 (form 12780 tonnes to 9 154 tonnes) as a result othe increased use of lead-free gasoline and the implementation of regulation of fuel additives in gasoline by Envisonment Canada. Production of primary copper and nickel accounted for 16.0%, and mining, milling and contrating of lead-bearing ores for a further of 6.6% of the lead emissions in 1978.
Author: Stephen W Adkins Publisher: CABI ISBN: 1780645252 Category : Science Languages : en Pages : 339
Book Description
This book explores the most important aspects of the biology, ecology and management of what is one of the world's worst weeds. Originally regarded as a major weed in Australia and India, Parthenium weed is now widespread in around 48 countries in Africa, Asia and the South Pacific, and has the potential to spread to new countries in Africa, Asia and Europe. This book, which is a collective effort by 27 members of the International Parthenium Weed Network, addresses research and knowledge gaps for different countries. It examines the weed's mode of spread, its impact on agricultural production, its effect on the environment and on human health, and its management using biological control, as well as cultural, physical and chemical approaches. It also considers the coordination of the weed's management, possible uses for Parthenium weed, its present distribution and how this is impacted by climate change. This book includes: A detailed analysis of Parthenium weed biology. Experiences with Parthenium weed worldwide. An explanation of practical management options. This book will be of interest to graduate students and researchers in universities and institutes, in the fields of plant ecology, botany, agriculture, conservation and restoration ecology.
Author: Wilfrid Jan
Author: Wilfrid Jan
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Author: Canada. Environmental Protection Directorate
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Author: Canada
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Author: 
Author: Canada. Air Pollution Control Directorate
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Author: Stephen W Adkins