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Biological Control of "Grubs" discovered in Nepal

Posted by Rohan Baidya on December 31, 2010 at 3:18 PM Comments comments (0)

Interpreted from: A National Daily

November. 2010


Main Story:

After a long investigation and experimentation, it is now said by the group of scientist from Regional Agro-Research Center at Dhankuta, under the charge of Nepal Agro-Research Organization, have found a new way of dealing with the insecticide restraint pest named "Chafers Grub", which is the larvae stage of "Cockchafer"(Melolontha melolontha).

 

"We've found a new biological way to control these annoying grubs" - says the Central's Veteran Scientist, Mr. Govind Temalseena. In course of investigation, it is found that, if the fungus contaminated grain, of barley, gets a contact with a grub, it will stop it's further consumption and later, there can be marks on development of fungus outnumbering, on the body of the grub, that would slowly lead it to death.

 

The grain are cooked in Autoclave and then the fungus is formed after about few weeks later. The best thing about this method is that, the fungus are diligent and yet more rapid in sense of growth to multiply themselves from one - to million on the rate of reproduction. Therefore the effect of the fungus on the soil can retain for a long time after a use. Besides, they don't have any adverse effect to other domestic creatures nor to humans as well. The dosage are rated to be from 1 to 2 Kg  per 509 m. sq. (i.e. 1 Rope-nee) of farm land.

 

"This method was practically applied about 4 years back in a farmland of Sedhuwa at Dhankuta and still on, there has been no complains of any grub, hitherto." - adds Mr. Temalseena. The center is now taking the authority of producing and providing the fungus.


Brief about the pest:

 

Cockchafer's larvae live underground, in the soil, and consume the roots of the plants. Thus, ultimately becoming an occasional pest for the farmers. They change themselves to Beetle in 3 - 4 years

 


For more: click here


Image: "Chafer's grub"


Easiest way to get the Electronic Configuration

Posted by Rohan Baidya on November 6, 2009 at 8:54 AM Comments comments (1)

We've learned the Afbau's principle but, for some who don't get it, this one may just come to be relevant.

 

Common for all, these are the capacity of every sub-shell:
{(no. of electron) on (sub-shell) [Acronym stood - as found on a search]}

  • 2 on s (spindle / sharp / spherical),
  • 6 on p (principal / peripheral),
  • 10 on d (dumbell / diffuse),
  • 14 on f (fundamental)

Now, first get this in: (the format of subshell)
 
s
s  p
s  p
s  d  p
s  d  p
s  f   d  p
s  f   d  p

then hit in the shell no. that makes

1s
2s  2p
3s  3p
4s  3d  4p
5s  4d   5p
6s  4f    5d  6p
7s  5f    6d  7p

Note:
s's shell no is from 1 - 7
p's shell no is from 2 - 7
d's shell no is from 3 - 6
f's shell no is from 4 - 5
To find the the electronic configuration of any element, you just have to remember the atomic number

For an anology:
to find the electronic configuration of
Tellurium
it's atomic no. is 52
fill in the format of the power of the sub shell so that their sum be 52.




The following made the total electron no. as 52
proof:
total number of electron in s sub shell : 2 X 5 = 10
total number of electron in d sub shell : 10 X 2 = 20
total number of electron in p sub shell : (6 X 3) + 4 = 22

(adding) : total electron in s sub shell + total electron in d sub shell + total electron in p sub shell
= 10 + 20 + 22
= 52

therefore, is the electronic configuration of Tellurium


Last Note for Disclaimers:
People do not use this in case of d-block elements or f-block because they are under influence of the d sub-shell.

  • In f-block, d always wants either to be d to the power 0 or 1
  • In d-block, d always wants either to be d to the power 10 when the electron number that was supposed to fill it in reaches near to 10 (i.e. 8 or 9)

Rain

Posted by Rohan Baidya on October 9, 2009 at 12:03 PM Comments comments (1)

It all commenced with gentle touch,

falling down in grace, from the sky.

Pitter-Patter it dropped down such,

as I looked, it splashed my eye!


I wonder where you come from,

Oh! you little adored drop of rain.

Endlessly to me you often come,

flowing down to my window pane.


Retards the time, as the day goes pale

as the show revokes with enthusiasum.

Sometimes hammers the massive hail,

while sometimes delightful precipitation.


Be frolic brother, to this moment upon,

it's time to relieve your stringent pains.

For every profound heart falls open,

when you stand outside, as it rains.


Clouds

Posted by Rohan Baidya on July 30, 2009 at 3:21 AM Comments comments (1)

Struggling the way worst, and through all the terrains.

Come from plains to hills, and surround the mountains.

It's a marvel, a beauty, of our one and only nature.

But as a traveler to a destiny, moves on to adventure.

 

It sets sail on the deep, and vast blue apex.

Some shape lenticular, while some like helix.

Some look irregular, while some with hoods.

Some over meadows, while some cover woods.


It zaps a flash, and roars the fiercesome thunder.

"Who may've created such?", the question I wonder.

They appear distinct, but the perspective is one.

Wether they split or collide, they keep moving on!


Sky so frazzled, that always made me to wonder.

While the world on distant, way out my yonder!

Sun scatters it's blare, so bright that dazzles me

but, beyond the azure, is all I ever want to see.


As I'm fascinated by the elegant beauty it posess.

but the joy of juvinile I feel, costs it to be priceless.

Time heals the wound, but the scars that it must give.

I dream aside the cerulean, for the aims I'll achieve!

What's the color of the sun?

Posted by Rohan Baidya on June 1, 2009 at 12:30 AM Comments comments (2)

The quesion may seem pretty easy to answer as it looks but it has some profound mystries.


Background

I know a lot either say, Yellow or White, Red or Orange. I would probably say, "Greenish - Blue". This may look unusual, and it is unusual. It is that, if you answer it Yellow, or white or any of them, people think that you are normal but speaking of "green or blue" make people tug their hair.


Evidence:

As you can have a look at the solar irradiance, you can see that the highest energy of light is received between the range of 469 and 555 nm which is probably the greenish blue color in which it is much more green. Like this as we have proved that the color of the sun is green but still is on a controversy.

 

Conclusion

From now on, if any smartypant geek comes and ask you, "What is the color of the sun?", then give it a tight punch on the face and say, "it's green!".



 



Auroras

Posted by Rohan Baidya on April 7, 2009 at 11:19 AM Comments comments (0)

A general notion :

Auroras are the vividly colored curtain of light seen at the polar skies.


Denominations:


Named after the "Roman Godess of Dawn" - "Aurora"
North Pole, they're named: "Aurora Borealis" ("Boreas" - Greek name for North Wind)
South Pole, they're named: "Aurora Australis" ("Australis" - Latin name for "South")


How are they formed?


Time of their display is specified with accord to the geomagnetic storms because, when and only there is a burst of solar flare on the sun's surface or CME (Coronal Mass Ejection), the solar charged particles are produced which are blown away by the solar wind.

On way, they then deflect against the earth's magnetosphere and carried to the magnetic poles, where they collide with the atoms of the gases present in the earth's atmosphere.

While the collision course, Alfven wave is relevant in the context, which is then called the theory of Aurora's formation. The molecules of the gases get electrically excited and the electrons take quantum leap - i. e. a mechanism in which electron's kinetic energy is converted into visible light.


Color's Emission:

Nitrogen emit "Blue" while Oxygen emit "Green" and some other including, Hydrogen and Helium emit "Pink". Mostly while returning from state of excitation, generally, "Red" is emitted too. 


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