【Native Speaker每日综合训练—34系列】【34-18】科技

jokerking

spk :      children enjoy explanation and akways invent their owns, so deliberately scientific fictions(wide and skinny pilosas） can help child know more about nature selection.
spd:     2.20  we always think lack of sleep seems no harm to the brain, but scientists demonstrated lost sleep cause damage to brain and eventually kill the cells.
          2.03 cells' death due to the increse of ROS, SIRT can protect brain from the damage of ROS, but sleep deprivation will inhibit the produce of SIRT. So scientist try to slove the problem of sleep loss by increasing the content of SIRT in brain. expweriment need to be further explored.
          1.47 new research proved the number of different scents people can distinguish estimated in 1920s was definately underestimate. we are more sensitive than we originally believed.
          2.42 scientists using 128 scent molecules, mixing them in different percentages, 3 vials per volunteer to test whether or not the participants can distinguish these smell. scientists believe hunmans is really good smellers
          1.23 there are two different kinds of decision making: Model-based decision making takes more focus and thought, while model-free decision making takes less. 貌似度过~
ob :    6.15  five ancient stories from around the world and the geology that may have influenced them.  

NativeStudy菌

晓野的野 发表于 2014-4-8 19:26
窝来啦~~~~~
XD 本来想晚上做的！
好啦！不给自己的拖延找借口，俺这就补上XD ...

yeah, let's get rid of procrastination!

NativeStudy菌

TaoRs92 发表于 2014-4-8 17:03
菌菌刚刚正好在做今天的科技。谢谢提醒，辛苦啦

What an coincidence!
Anyway, it's my pleasure!

Christina54

Speaker:
Stories were made up by researchers to see if kids could understand the concept of natural selection. The parables engage kindergardeners to get the idea of evolution.
Time2:03'37''
Lost sleep will lead to the damage even death of neurons. Sleep is important since it cleans our brain cells and helps consolidate our memories. Lack of sleep may harm the ability of concentration because the locus ceruleus, which is an area f neurons in brain stem plays an important role in attention and also is sensitive to stress. In order to exam how decreased sleep would affect the brain work, researchers conduct the mice experiment.
Time3:02'40''
The experiment proved that three days of sleep deprivation caused neurons in the locus ceruleus to die and napping can't compensate for the sleep lost.  
SIR3 plays an important role in sleep since its a key protein to protect neurons from injury, but increasing SIR3 may have more effects than just protecting our neurons. Whether the locus ceruleus can recovery from neurons loss still need evidence to testify.
Time4:02'28''
New research suggests that the human nose is capable of distinguishing between something on the order of a trillion different scents.

小笨蛋0412

speed
3'00
2'39
2'22
2'42
1'19
ob
7'00
There are many myths familiar with many people. Although most of those myths are made up, a few have roots in reality.
We don't know that real events and myths which happened early.
A introduction about ten myths that geology influenced on.

cyndichiang

Time2 2'03''
Researchers did experiment to find how brain responds to the decreased sleep and they concludes that lost sleep can cause the death of neuron.

Time3 2'11''
SIRT3 is an important protein in locus that can prevent neurons from damage from ROS. Thus some scientists infer some ways to recover the lost sleep through SIRT3.

Time4 2'12''
A new finding shows that although human have weaker smell sense than dog's ,we can smell more than 10000 different scents, more than previously estimated.
Some researchers did some test to make such conclusion and they expanded these finding to optical sense and hearing sense.

Time5 2'06''
Researchers found that human can actually smell a combination of more than 100 molecules and they can also distinguish trillions of different mixtures.

Time6 1'39''
Stress can make us make poorer decisions and model-based decision takes more focus and thought, while model-free decision takes less

Obstacle: 6'29''
The passage shows us 5 myths and how geology can influence the these stories.
Noah'Ark  could be explained by the catastrophic and global flooding.
The Oracle at D : Gas can explain the site of the ancient temple
Atlanties: The real island civilization had existed but it was ruined by volcano
Pele, Goodness of K: Volcano and burning forest
Rame's Bridge: the rising sea level and tsunami may explain several submerged temples

wensd1111

1 A 02:16
2 A 01:49
3 A 01:43
4 A 02:00
5 A 01:27
6 A 05:46
the noa's ark,the flood cover the whole dry land; the atlantis, the glorious city in midterenian; the temple in Greece. the hawai , the geological activity.
historical stories and the scientific clues.