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[科学美国人60秒] 【整理】SSS 2008-07-01

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[科学美国人60秒] 【整理】SSS 2008-07-01

SSS 2008-07-01

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Tune in every weekday for quick reports and commentaries on the world of science-- it'll just take a minute.


Using beams of light to hold molecules in place or tug at them, researchers have directly measured the strength of protein chemical bonds and could tease out more cellular secrets. Cynthia Graber reports.



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【整理】SSS 2008-07-01【整理人】ZPC224

Transcript

 

This is Scientific American's 60-Second Science, I am Cynthia Graber. This'll just take a minute.

 

Imagine tweezers so fine that you could reach right into a cell and manipulate individual molecules. MIT researchers have created such a tweezer, using beams of light. The tweezer is so precise it’s been used to determine how strong the chemical bonds are between two protein molecules in a cell. The research was published in the June 30th edition of the Proceedings of the National Academy of Sciences. It builds on work published last fall, when the same scientists demonstrated that so-called optical tweezers could pick up and move cells on a microchip. Scientists wanted to investigate protein bonds to get a better understanding of the forces that give cells structure and the ability to move around. They used the light-beam tweezer to pin one type of protein in place. Another beam tugged at a second protein, which eventually broke completely away from the first. By knowing the energy necessary to break the bond, the scientists were in fact measuring the strength of that bond. Researchers say the tweezers can be applied to hundreds of other protein interactions that make up the cell’s architectural skeleton, potentially teasing out secrets of how cells work.


 

Thanks for the minute for Scientific American's 60-Second Science, I'm Cynthia Graber.

[ 本帖最后由 zpc224 于 2008-7-4 20:45 编辑 ]

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homework this is scientific american 60 seconds science.i'm Sondagraber. imagine twiser so fine that you could reach write into itself and individual molecules.and mighty reachers had created such twiser with beans of leg.the twiser so precise it be used to determine how strong the camical bonds are between two proutine molecules itself.the reseach was published in the june 30 edition of proceedings of national acadamy of sciences.it buils up last four,when same scientists demonstrated so called upticle twisters could pick up and moves up on a microchip.scientists wanted to get proutine bond to get better understanding of the forces they gave so structural in the ability to move around.they used one type of proutine in place,another proutine which broke completely away from the first.i know the energy necessory to break the bond,the scientists were infect the straint of that bond.researcher say that the twiser can be applied to hundreds of other proutine interactions that make up the sel skeleton.,patentially secrets of house work.
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  • zpc224

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ON mumu_17

 

 

This is Scientific American's 60-Second Science.I'm Sondagraber. This will just take a minute.

 

Imagine tweezers so fine that you could reach right into itself and manipulate individual molecules.MIT(Massachusetts Institute of Technology 麻省理工学院) reachers had created such a tweezer with beams of leg.The tweezer is so precise it's been used to determine how strong the chemical bonds are between two protein molecules in a cell.the reseach was published in the June 30th edition of Proceedings of National Academy of Sciences.It buils on work published last fall,when the same scientists demonstrated so called optical tweezers could pick up and move cells on a microchip.Sientists wanted to investigate protein  bonds to get a better understanding of the forces that give cells structure and the ability to move around.

 

They used the light beam tweezer to pin one type of protein in place,another beam *

at a second protein, which eventually broke completely away from the first.By knowing the energy necessory to break the bond,the scientists were in fact measuring  the

strength  of that bond.Researcher say that the tweezer can be applied to hundreds of other protein interactions that make up the cell's architectural skeleton.,potencially teasing out secrets of how cells work.

[ 本帖最后由 practice100 于 2008-7-1 21:07 编辑 ]
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  • zpc224

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on Mumu-17

this is scientific american 60 seconds science.i'm Sondagraber.

 imagine twister’s so fine that you could reach right into a cell and manipulate individual molecules.MIT reachers had created such twister using beams of light.the twiser’s so precise, it’s been used to determine how strong the chemical bonds are between two proutine molecules in a cell.the reseach was published in the june 30 edition of proceedings of national acadamy of sciences.it builds on work published last fall,when same scientists demonstrated that so called upticle twisters could pick up and moves up cells on a microchip.scientists wanted to investigate protein bonds to get better understanding of the forces that give cells structure and the ability to move around.they used the like beam twister for one type of  protein in place,another beam tug at a second protein which eventually broke completely away from the first.By knowing the energy necessory to break the bond,the scientists were in fact measuring the strength of that bond.researcher say that the twisers can be applied to hundreds of other protein interactions that make up the cell’s architectural skeleton,potentially teasing out secrets of how cells work.

 

 

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  • zpc224

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on 4#  4#已经改的挺好了

This is scientific American 60 -second science.I'm Sondagraber.This'll just take a minute.
Imagine tweezer’s so fine that you could reach right into a cell and manipulate individual molecules.MIT reachers had created such twiser using beams of light.The tweezer’s so precise, it’s been used to determine how strong the chemical bonds are between two protein molecules in a cell.The reseach was published in the june 30th edition of proceedings of national acadamy of sciences.It builds on work published last fall,when same scientists demonstrated that so-called optical twisters could pick up and move / cells on a microchip.scientists wanted to investigate protein bonds to get a better understanding of the forces that give cells structure and the ability to move around.They used the light beam twieezer for one type of  protein in place,another beam tug at a second protein which eventually broke completely away from the first.By knowing the energy necessory to break the bond,the scientists were in fact measuring the strength of that bond.Researchers say that the twisers can be applied to hundreds of other protein interactions that make up the cell’s architectural skeleton,potentially teasing out secrets of how cells work.

[ 本帖最后由 wfyiqpl1 于 2008-7-1 21:34 编辑 ]
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  • zpc224

lily

homework

This is SCIENCE AMERICAN 60 seconds science,I'm ... This all just take a minute . Imagine twrisser so fine that you could reach to a cell malaclate individual melleques. In s.p. researchers is too precise , it's been used to determine how strong the chemical bonzard between two protein maleques and cell. The reasearch was published in the June 30th of addition of precedings of National Academy of sciences. It builds on work published last fall when the same Sciential demonstrated the so called optical twrissors could pick up and more cells on the MIcheal chip. Scientist want to investgate protein bones to get better ability to move around. They use life bean twrissor of one type of protein and place. Another been top done the second protein which eventually brought competely away from the first. Knowing the energy necessery the strinct of that bound researchers say the twrissors can be appliced to hundreds of protein in directions that make up the cells arctectial skeleton. Potentially teesing out secrets of cell's work. Thanks for the minute for SCIENCE AMERICAN,I'm....
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  • zpc224

终有一天,你们会听见我的音乐~ 响彻世界                      YUI,我要超过你的

on wfyiqpl1

This is scientific American 60 -second science. I'm Sondagraber. This'll just take a minute.


Imagine tweezer’s so fine that you could reach right into a cell and manipulate individual molecules. MIT
researchers have created such a tweezer using beams of light. The tweezer’s so precise. It’s been used to determine how strong the chemical bonds are between two protein molecules in a cell. The research was published in the June 30th edition of proceedings of the national academy of sciences. It builds on work published last fall, when the same scientists demonstrated that so-called optical tweezers could pick up and move cells on a microchip. Scientists wanted to investigate protein bonds to get a better understanding of the forces that give cells structure and the ability to move around. They used the light beam tweezer for one type of protein in place, another beam tug at a second protein which eventually broke completely away from the first. By knowing the energy necessary to break the bond, the scientists were in fact measuring the strength of that bond. Researchers say /that/ the tweezers can be applied to hundreds of other protein interactions that make up the cell’s architectural skeleton, potentially teasing out secrets of how cells work.

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  • zpc224

实现无障碍英语沟通

homework

This is Scientific American's 60-Second Science.I'm Synthegraber. This will just take a minute. Imagine tweezers so fine that you could reach right into itself and manipulate individual molecules.MIT(Massachusetts Institute of Technology) reachers have created such a tweezer using beams of leg.The tweezer is so precise it's been used to determine how strong the chemical bonds are between two protein molecules in a cell.The reseach was published in the June 30th edition of Proceedings of National Academy of Sciences.It buils on work published last fall,when the same scientists demonstrated so called optical tweezers could pick up and move cells on a microchip.Sientists wanted to investigate protein bonds to get a better understanding of the forces that give cells structure and the ability to move around. They used the light beam tweezer to pin one type of protein in place,another beam tied dedicated protein, which eventually broke completely away from the first.By knowing the energy necessory to break the bond, the scientists were in fact measuring the strength of that bond. Researchers say that the tweezer can be applied to hundreds of other protein interactions that make up the cell's architectural skeleton,potencially teasing out secrets of how cells work. [ 本帖最后由 lxwsdrz9999 于 2008-7-2 08:33 编辑 ]
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普特听力大课堂
This is scientific American 60 seconds science.I am Sondagraber.This will just take a minute. Imagine tweezer so fine that you could reach right into a cell and manipulate individual molecules. MIT researchers had created such tweezer using beams of light.The tweezer is so precise,it's been used to determine how strong the chemical bonds are between two protein molecules in a cell.The research was published in the june 30th edition of proceeedings of national acadamy of sciences.It builds on work published last fall,when same scientists demonstrated that so called optical tweezers could pick up and move cells on a microchip.Scientists wanter to investigate protein bonds to get a beeter understanding of the force that give cells structure and the ability to move around.They used the light beam tweezer for one type of protein in place,another beam tug at a second protein which eventually broke completely away from the first.By knowing the energy necessory to break the bond,the scientists were in fact measuring the strength of that bond.Researchers say that the tweezers can be applied to hundreds of other protein interactions that make up the cell's architectural skeleton,potentiallly teasing out secrets of how cells work.
好栏目推荐之美国口语俚语
Imagine tweezers so fine that you could reach right into a cell and manipulate individual molecules. And MIT researchers had created such a tweezer using beams of light. The tweezer's so precise, it's been used to determine how strong the chemical bonds are between protein molecules in a cell. The research was published in the June 30th edition of the Proceedings of Natinoal Academy of Sciences. It builds on work published last fall when the same scientist demonstrated that so called optical tweezers could pick up and move cells on a microchip. Scientists wanted to investigate protein bonds to get a better understanding of the forces that give cells structure and the ability to move around. They use the light beam tweezer to pin one type of protein in place, another beam tug at a second protein which eventually broke away from the first. By knowing the energy neccessary to break the bond, scientists were in fact measuring the strength of that bond. Researchers say the tweezer can be applied to hundreds of other protein interactions that make up the cell's architectural skeleton, potentially testing out secrets of how cells work.

on XKX

This is Scientific American's 60-Second Science, I am Cynthia Graber. This'll just take a minute.

 

Imagine tweezers so fine that you could reach right into a cell and manipulate individual molecules.M.I.T. researchers have created such a tweezer,using beams of light.The tweezer's so precise it's been used to determine how strong the chemical bonds are between two protein molecules in a cell.The research was published in the June 30th edition of the Proceedings of the National Academy of Sciences.It builds on work published last fall when the same scientists demonstrated that so called optical tweezers could pick up and move cells on a microchip.Scientists wanted to investigate protein bonds to get a better understanding of the forces that give cells structure and the ability to move around.They use the light beam tweezer to pin one type of protein in place.Another beam tugged at a second protein which eventually broke completely away from the first.By knowing the energy necessary to break the bond,the scientists were in fact measuring the strength of that bond.Researchers say /the tweezers can be applied to hundreds of other protein interactions that make up the cell's architectural skeleton.Potentially teasing out secrets of how cells work.

 

Thanks for the minute for Scientific American's 60-Second Science, and I'm Cynthia Graber.

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  • zpc224

坚持下去,享受下去...
That man is coming back again...

This is scientific American 60 seconds science, I am Sandagraber, this will just take a minute.

 

Imagine tweezer so fine that you could reach into yourself and manipulate individual molecules. MIT researchers have created such a tweezer using beams of light, the tweezer is so precise that it has been used to determine how strong the chemical bonds are between protain molecules are built. The research was published in Gene 30th edition in preceeding National Academy of Sciences, it builds on work published last fall when the same scientist demonstrate so called optical tweezers could pick up and move itself on the mocrochip. Scientists want to investigate protein bonds to get a better understanding of the force that give itself structure and the ability to move around. They use the light-beam tweezer to pin one type of protein in place, another been tugged at a second protein which eventually broke completely away from the first. By knowing the energy necessary to break the bond, the scientists were in fact measuring the strength of that bond. Researchers say that the tweezers can be applied to hundreds of other protein's interactions that make up the cell's architectural skeleton, potentially teasing out secret of how cells work.

 

Thanks for the minute for Scientific American 60 seconds science, I'm Sandagrader. 

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homework

Imagine tweezers are so fine that you could reach right into a cell and manipulate individual molecules. MIT researchers have created such a tweeser, using beams of light. The tweezer is so precise it has been used to determine how strong the chemical bonds are between two protein molecules in the cell. The research was published in the June 30th edition of the preceedings of the National acadamy of sciences. It builds on work published last fall when the same scientist demostrated that so-called “optical tweezers” could pick up a move cells on a micro... Scientists wanted to investigate protein bonds to get a better understanding of the forces that give cell structure and the ability to move round. They used the light beam tweezer to .. one type of protein in place and other been.... at second protein, which eventually broke completely away from the first. Bying knowing the energy necessary to break the bond, the scientists were in fact measuring the strength of that bonds. Researchers say the tweezers can been applied to hundreds of other protein interactions that make up the cells’ architectural skeletons-- protentially teasing out secrets of how cells work.
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