Saturday, November 23, 2013

Henry 헨리_1-4-3 (I Love You)



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Government to release four residential sites estimated to yield 2,350 housing units in November 2013

Government to release four residential sites estimated to yield 2,350 housing units in November 2013

Date issued : 18 Nov 2013

To provide developers and home-buyers with more choices for private housing, the Housing & Development Board (HDB) and the Urban Redevelopment Authority (URA) will be releasing four residential sites for sale in November 2013 under the Government Land Sales (GLS) Programme for the second half of 2013 (2H2013).

The residential site at Upper Paya Lebar Road and two Executive Condominium sites at Canberra Drive and Anchorvale Crescent are launched for sale today under the Confirmed List. The Executive Condominium site at Choa Chu Kang Drive is made available for application today on the Reserve List.

Together, these four sites can yield about 2,350 residential units.

More details on the land parcels can be found in Annex 1 (PDF 50KB). Location plans are attached in Annex 2 (PDF 508KB).

Other Details

The closing dates for the tender for the land parcels are as follows:


Upper Paya Lebar Road    : 14 January 2014
Canberra Drive     : 28 January 2014
Anchorvale Crescent    : 13 February 2014




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Plants 'do maths' to control overnight food supplies

Plants 'do maths' to control overnight food supplies

By Helen BriggsBBC News



Arabidopsis Arabidopsis thaliana: A model plant for scientific experiments

Plants have a built-in capacity to do maths, which helps them regulate food reserves at night, research suggests.

UK scientists say they were "amazed" to find an example of such a sophisticated arithmetic calculation in biology.

Mathematical models show that the amount of starch consumed overnight is calculated by division in a process involving leaf chemicals, a John Innes Centre team reports in e-Life journal.

Birds may use similar methods to preserve fat levels during migration.

The scientists studied the plant Arabidopsis, which is regarded as a model plant for experiments.

'Astonished'

Overnight, when the plant cannot use energy from sunlight to convert carbon dioxide into sugars and starch, it must regulate its starch reserves to ensure they last until dawn.

Experiments by scientists at the John Innes Centre, Norwich, show that to adjust its starch consumption so precisely, the plant must be performing a mathematical calculation - arithmetic division.

Continue reading the main story
“Start Quote

This is the first concrete example in biology of such a sophisticated arithmetic calculation”

Prof Martin HowardJohn Innes Centre, Norwich

"They're actually doing maths in a simple, chemical way - that's amazing, it astonished us as scientists to see that," study leader Prof Alison Smith told BBC News.

"This is pre-GCSE maths they're doing, but they're doing maths."

The scientists used mathematical modelling to investigate how a division calculation can be carried out inside a plant.

During the night, mechanisms inside the leaf measure the size of the starch store. Information about time comes from an internal clock, similar to the human body clock.

'Sophisticated'

The researchers proposed that the process is mediated by the concentrations of two kinds of molecules called "S" for starch and "T" for time.

If the S molecules stimulate starch breakdown, while the T molecules prevent this from happening, then the rate of starch consumption is set by the ratio of S molecules to T molecules. In other words, S divided by T.

"This is the first concrete example in biology of such a sophisticated arithmetic calculation," said mathematical modeller Prof Martin Howard, of the John Innes Centre.

The scientists think similar mechanisms may operate in animals such as birds to control fat reserves during migration over long distances, or when they are deprived of food when incubating eggs.

Commenting on the research, Dr Richard Buggs of Queen Mary, University of London, said: "This is not evidence for plant intelligence. It simply suggests that plants have a mechanism designed to automatically regulate how fast they burn carbohydrates at night. Plants don't do maths voluntarily and with a purpose in mind like we do."

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Om Mani Padme Hum

Om Mani Padme Hum

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