INTERNATIONAL JOURNAL ON SMART SENSING AND INTELLIGENT SYSTEMS, VOL. 3, NO. 4, DECEMBER 2010 Microcontroller based Power Efficient Signal Conditioning Unit for Detection of a Single Gas using MEMS based Sensor P. Bhattacharyya*, D. Verma and D.Banerjee Department of Electronics and Telecommunication Engineering, Bengal Engineering and Science University, Shibpur- 711103, Howrah, West Bengal, India *Corresponding author: Tel.: +913326684561; fax: +913326682916 E-mail: pb_etc_besu@yahoo.com
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Our planet has a problem that it is getting warmer. Most of the scientists agree that this climate change is threatening our earth; human beings can be extinct probably in the near future. The cause and effects of this phenomenon has been studied which is greenhouse effect. The whole world is getting involved in this issue and looking for solutions. Greenhouse effect is a natural phenomenon that increases temperature of the earth’s surface (Australian government). However, according to the investigations
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Hydraulic Fracturing, also known as fracking, is a process used in nine out of 10 natural gas wells in the United States, where millions of gallons of water, sand and chemicals are pumped underground to break apart the rock and release the gas. Scientists are worried that the chemicals used in fracturing may pose a threat either underground or when waste fluids are handled and sometimes spilled on the surface. Extracting gas from shale increases the availability of this resource, but the health and environmental
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as Hybrids, Battery power, Diesel, Biodiesel, and Natural Gas, and also the factors that will impact the American people having to find resources easily, which can be difficult. Energy Act of 2005 As early as 2005 the United States knew that we could not rely on fossil fuels indefinitely and did not want to rely on foreign oil. The Energy Act of 2005 sec 301 defined what the Alternative Fuels are: Ethanol, Biodiesel, Propane, Natural Gas, Hydrogen, and Electricity are all naturally produced domestically
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and results in warmer temperature. 2. The three examples of greenhouse gasses are Carbon Dioxide, Methane and Nitrous Oxide. 3. Global Warming refers to increase in average temperatures. Greenhouse gasses have an effect on global warming. Gas such as Carbon dioxide leads to climate change over the years. Greenhouse effect can be split into two different categories. First would be the natural Greenhouse effect. This man made greenhouse works by trapping gasses which produces heat by holding
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Every place, country, city, region has its own climate. Climate plays one of the important roles in people’s life. Climate is defined as the average weather, which means variety of weather conditions as rain, snow, hail, sun, and wind over period of time about 30 years that can be measured in any particular place.( IPCC Third Assessment Report - Climate Change 2001; editor:A.P.Baede) Climate change is a variation of average weather. There are 2 causes of climate change. The first is human activity
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growth in industrialization, agriculture sector and deforestation has been argued as substantial causes of climate change. According to the environmentalists and scientists, growth of industrialization is a major reason for emission of greenhouse gas in our environment. As a result, human activities like burning fuel, building
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public health impact than fossil fuels. That source is nuclear energy." In the following viewpoint, Mario Salazar argues that the dangers of nuclear power have been greatly exaggerated while those of other energy sources have been downplayed. Using a gas leak accident in Bhopal, India, as an example, he maintains that far fewer people have been harmed by the nuclear industry than by other industries and energy sources. Disaster scenarios, he says, do not acknowledge that, like all other energy sources
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been global climate changes that have broken records from the past 1,000 years. These changes have happened from the use of atmospheric greenhouse gases and fossil fuels. Greenhouse gases are caused from heat being trapped in the atmosphere from the gas which warms the planet. Many say that it is a necessity of life in order to keep Earth living. The greenhouse gases have increased and created an unnatural source known today as “global warming”, and has created climate change. Since the Industrial
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1. Introduction Rural development is South Africa’s priority to achieving the millennium development goals (MDGs). The millennium development goals aim at cutting poverty by 50% by the year 2015. In South Africa about 40% of the country’s population resides in rural areas and they directly or indirectly depend on the land that they live in. Agriculture plays a significant role in the country’s economy, contributing in 2000 about 2.9% of GDP, 10% of formal employment and 10% of the total value of
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