【Native Speaker每日综合训练—34系列】【34-18】科技

triway

Obstacle
8'28''
There is an important relationship between the myths and the true geologic observations, we use 10 examples to describe it clearly.
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article2
Based on the recent researches, a loss of sleep may cause the damage of the neurons, because the SIRT3 go down while the ROS goes up, the mice in the laboratory can be an evidence that the deprivation of sleep may kill the neurons. But we don't know yet if it's adapt to the humans.

article3
people can observe much more scents than we thought before, because the statistics in 1920s is not as accurate as that now, more than one Trillion odors can be recognized by the human noses.
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article4
There are two sorts of decision making models. The first one is model-based decision which requires more concentration, more thoughts and more consideration. The second is model-free decision which is made when you are under the pressure, and when you have to decide it immediately in a rush.

billhwm

1,children natural selection people should use sample tale to explore children 's talent  
2 people can smell at least 1trillion .broken up the usual thinking that human not a good smaller by examine 26 people
3ten tale that may really exist one noah arh god want people die but noah ,noah beg for a arh thatcan save many things belong to him ,real thing is some flood in many diffrent culture,maybe happened in bla ck sea. two temple gas ,,,,,3a opera movie three people love and destroy happen in hawii ,real thing vocanal eruption 4india brige monkey some animals make it and rama run through it from india .real thing maybe now undersea india and some where have a stone brige linked
4 sleep problem napping can not recovery the damage from less sleep ,make a test use mice less 3hours can make some thing in cell high therefore other thing low,cancel cell also high   if serious make cell die

风随心动01

占个座，谢谢cherry~

铁板神猴

Speed
3'09"
2'04"
1'46"
2'41"
1'17"

Obstacle
7'00"

饼干小熊

今天文章很有意思，然后就忘了计时了....................................

ieveline

天哪。。。要是这节奏。。。
谢谢楼主！

Speaker
An example made up shows natural selection.
Young children could understand natural selection by this example.
This method could be used to explain other complex theory to children.
Speed
1--02:48
People often stay late for some reaons or even stay whole night.
Scientists use mice in the lab, make mice stay later than usual or over night to find out the effects of lack of sleep.
Study shows that lack of sleep produced a protein which reduce chamicals, which can bind to and disrupt all sorts of cellular processes.
And ROS may cause damage and eventually cell death.
2--02:01
SIRT3 appears to protect neurons from damage by ROS.
But lacking the gene for the SIRT3 protein, even lack of hours of sleep results in neuron injury from ROS
SIRT3 has functions more than protecting neruons from a late night, cancer cells have high SIRT3.
Further study should be carry on the recover from neuron loss, relaiton between sleep-deprived and attention or momery deficits, human neuron loss with long-term shift work and so on.
3--01:56
Old theory said human can only sense 10000 kinds of smell.
The figure is underestimated.
Recent study shows human nose can distinguish beween something on the order of a trillion different scents.
Test oldfactory is more difficult than test sight or hearing.
Three receptors in human eyes allows us to seen an estiated 10 million colors, 400 different smell receptors should work far geater than 10000.
4--02:56
Smell, such as the one fo a rose, is result of some unique molecules in combinaiton.
In the study, 128 combination is used.
Researchers found people can distinguish two smell which 51% identical apart.
And 126 molecules indicates participants can distinguish between at least a trillion different scent combinations.
Since many more molecules exist in the real world, the figure should be higher.
5--01:49
Model-based decision making, aka, decision making when you have time and out of pressure, take all the possibilities.
Model-free decision making, aka, decision making when you out of time and being a lot of pressure, take less of time and think less.
Obstacle--07:47
Myths reveals geological events.
Noah'Ark was used to warning people about huge flood, such as catastrophic flooding event in the Black Sea around 5k BC.
The Orcale at Delphi, the temple was ra real plece and natural gas emanting.
Atlantis is not a real place, but can be connected to a real civilization which was ruined by vocano eruptions.
Pele, Goddess of Kilauea actually describes volcanic activities.
Rama's Bridge was acutally existed in the history.

hemodata

Speaker:

Kids can learn complex scientific concept by listening to stories. An example mentioned in the postcard is that, researchers told children a fiction story about P, a animal with different kind of trunks. In the story, as environment changes, Ps with thin and tiny trunks survived because this character helps them get more food. From this story, children understand basic concept of evolution.

我发现我还是很容易说话说半句就停顿在那里，感觉就是脑子没再转，又不能脱口而出
而写字就好得多
其实好像我中文也是这个毛病，大概就是想得慢。。。看看英文怎么养成想好了再说的习惯吧==#

TINGYI-2014

第一天做题目就到这个时候了。神听力，听了四遍才理解什么意思。哎，弱爆了。
速度：
3‘13
3’16
2‘23
2’54
1‘41
11’40
今天太晚了。争取明天做记录。
楼主辛苦！

云游

really appreciated!
Speaker:Introduction of the die-out of certain animal will enable kindergarden children to better understand the concept of revolution, therefore improving the science literacy as a whole.
Time 1:2'22'' We may consider it's possible for us to offset some deficiency in sleep by sleeping for more hours in weekend, but actually, scientific research has proveded that lost in sleep would possibly reduce quantity of neurons.
Time 2:1'43'' Experiments have vindicated those effects existed in mice, and will take similar effects in human being. This result is scary and has horrified those hard-working scientists to spend more time on sleeping.
Time 3:1'37'' Out of our previous assumption, human-being can actually sense 1 trillion different cells. However, we are yet able to accurately test it by far.
Time 4:2'13'' Tests have been conducted to vindicate that human-being can distinguish different cells.
Time 5:1'20'' Model-free test may take less time and less money in a purchasing.
Obstacle: 3'41'' Mythological data may provide scientific hints on their geographic origin.

bluewind48

time2 03:09 if we lose sleep, cells could be killed.现在就没睡醒状态。。。
time3 another biologist from Duke claimed that the experiment above might not enough to make such conclusion. It will also be important to see if other cells could adjust such situation, and if the mice had dificits in attention or memory.
time4 01:52 human beings could distinguish one trillion different smells, so our noses are far more sensitive than we thought.
time5 02:50how did the experiment performed
time6 our brains might give a bad dicision when we are under pressure, because we considering all the elements involved.
这第六篇是警钟啊！可以翻了好多相关来看！原文不完整可惜打不开链接。
看来复习时候要专心，但要减轻心理压力