منابع مشابه
Methane in Kano-Nigeria atmosphere
ABSTRACT Methane concentrations in Kano municipality have been attributed to the burning of solid and fossil fuels and industrial processes. Using an automatic gas sampling system, methane in the Kano atmosphere was determined. Its distribution in the municipality was skewed towards high frequency of low concentration with a mean and standard deviation of 0.61? 0.39 ?g/m3. Similarly the distri...
متن کاملSensing Atmosphere
The World Health Organization reports that 2 million people die each year from the effects of air pollution, twice the number of fatalities as from automobile accidents [1]. Direct causes of air pollution related deaths include aggravated asthma, bronchitis, emphysema, lung and heart diseases, and respiratory allergies. While civic agencies address large-scale environmental health problems from...
متن کاملControlled atmosphere, modified atmosphere and modified atmosphere pack- aging for vegetables
Purpose of Review: This review is aimed at illustrating the directions in which research on controlled atmosphere (CA), modified atmosphere (MA) and modified atmosphere packaging (MAP) for fresh and fresh-cut vegetables has been focused since about 2000, and to highlight significant new findings in the field. Findings: In the last 5 years, little research with vegetables has been carried out to...
متن کاملEvolution of Earth’s Atmosphere
Although the planets Mercury, Venus, Earth, and Mars have masses within a single order of magnitude range, they possess atmospheres with extremely different properties (Table 1). These bodies may have initially possessed primordial atmospheres of solar composition whose dominant light gases (hydrogen and helium) were lost to space and replaced by outgassed water, carbon dioxide, and nitrogen (a...
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ژورنال
عنوان ژورنال: Nature
سال: 1973
ISSN: 0028-0836,1476-4687
DOI: 10.1038/242584a0