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“Urbanisation, pollution cause for global warming”

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The Hindu 18.12.2009

“Urbanisation, pollution cause for global warming”

Staff Reporter

Call for including disaster management in curriculum

— Photo: G. Karthikeyan

Grow trees: S.R. Ramanan, Director, Regional Meteorological Centre, Chennai, speaking at a conference in Dindigul on Thursday.

DINDIGUL: Massive urbanisation and air pollution are the major factors for the rise in temperature and global warming. Balanced growth in the development and protection of nature, particularly eco system, is the need of the hour to check rise in temperature, said S.R. Ramanan, Director (Cyclone Warning Centre), Regional Mateorological Centre, Chennai.

Talking to presspersons at the International Conference on Disaster Management and Mitigation held at P.S.N.A. College of Engineering and Technology here on Thursday, he said that development activities could not be stopped for the growth of nation. At the same time, protective measures, like growing trees and restricting use of vehicles, should be initiated seriously to protect nature and curtail rise in temperature. Industrial development and preservation of nature should go hand in hand, he advised.

Massive awareness was essential to save people, particularly in rural areas from lightning attack. Awareness alone would provide adequate safety to individuals. Many people were killed by lightning. People should not stand in an open area or under tall trees and also under a single tree. They should stay in homes at villages. Following these simple steps would certainly save precious lives.

Briefing rainfall scenario this season, the director stated that the rain was very poor in Karur, Vellore, Dharmapuri and Krishnagiri districts. Fall in rainfall would adversely scale down agriculture production. But the over all rainfall in the State was 42 cm, marginally lower than the average rain of 43.2 cm this season.

Moreover, monsoon always differed from one another. With the availability of sophisticated technology, all information about monsoon was being posted in the internet in half an hour, Mr. Ramanan said.

When the air speed was 31 kmph, it was considered as low depression, between 31-51 kmph it was called depression, 52-62 kmph deep depression, 73-87 kmph cyclone, 88-117 severe cyclone, 118-221 kmph very severe cyclone and above 222 kmph, it was described super cyclone, he added.

The solar, wind and hydel energies were clean and pollution free technologies of which solar energy was more dependable. Disaster management could be included in school and college syllabus. Later, he delivered a special lecture and interacted with students in the conference.

Last Updated on Friday, 18 December 2009 01:41
 

Plastic waste sorting equipment launched

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The Hindu 10.12.2009

Plastic waste sorting equipment launched

Special Correspondent

CHENNAI: And, now technology that helps segregate plastic based on the polymer to curb wastage during recycling or filter out the bad mangoes in the bunch to ensure that only good fruit enters the market.

The Central Electronics Engineering Research Institute (CEERI) unit in Chennai on Wednesday transferred to industry two technologies developed at its laboratories on the Taramani campus of the Council of Scientific and Industrial Research.

The plastic waste sorting system project supported by the Ministry of Environment and Forests deploys Near Infra Red (NIR) spectroscopy to identify poly-ethylene terephthelate (PET) materials before recycling. The equipment, which uses NIR rays in the 700-2,500 nano metre electromagnetic spectrum, will segregate different kinds of plastic on a scale of sensor values for each base polymer.

Apart from carrying immense social benefit, the equipment is expected to address a major issue for recycling industries — the enormous wastage when different types of plastic get mixed up during recycling of PET.

At present, the equipment can differentiate six types of plastic — poly-ethylene, poly-ethylene terephthelate, poly-propylene, poly-vinyl chloride, high density poly ethylene and poly-styrene. However, the experimental lab model sorts only PET on a throughput of 200 kg per hour. The technology was transferred to Bangalore-based Dintis Technologies.

Segregation of mangoes

CEERI also showcased a device that segregates good mangoes from the bad at the maturation stage. The x-ray imaging-based mango sorting system uses the same technique deployed at baggage screening at airports and helps detects spongy tissue or seed weevil infestation that are not apparent externally. The machine is particularly useful for traders exporting bulk quantities of exotic varieties such as the Alphonse mango.

The technology was transferred to Proteck Circuits and Systems in Chennai.

Last Updated on Thursday, 10 December 2009 05:03
 

Ambattur Municipality may ban plastic bags

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The Hindu 30.11.2009

Ambattur Municipality may ban plastic bags

K. Lakshmi

CHENNAI: The Ambattur Municipality proposes to introduce ban on use of plastic bags that are less than 20 microns thick in the area soon.

A resolution was approved by the council recently. The local body plans to sensitise people about environmental hazards and use of alternative materials such as paper bags. Members of women’s self-help groups would also be trained in making paper bags.

While a fee is proposed to be collected from owners of marriage halls to collect additional garbage, penalty would be levied on shopkeepers who sell plastic bags of low thickness. However, these measures would be implemented in February after public discussion. The municipality also plans to procure 45 iron bins.

Municipal Commissioner Ashish Kumar said all health posts, bill collection centres and municipal office would be enabled with CCTV facility to monitor the activities in two months. Moreover, electronic digital boards would also be installed in municipal office, health posts and Ambattur OT bus stand at an estimated cost of Rs.3 lakh to provide information such as contact numbers of municipality officials and services.

However, resolutions pertaining to collection of fee from mobile operators for installing mobile phone towers and rates for sewage disposal were dropped following objections from councillors.

Some of the other resolutions approved by the council include purchase of 17 hand-held billing machines for property tax collection and construction of Rs.24 lakh worth stormwater drain from Vallayapathi Street, Mogappair to Padi Kuppam Road covering a distance of one km.

Last Updated on Monday, 30 November 2009 01:46
 


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