【Native Speaker每日综合训练—26系列】【26-09】科技

nancyren

Time2:1'34
Time3:1'24
Time4:1'42
Time5:1'59
Time6:2'14
Obstacle:5'12

宋可嘉2009

01.49.42
01.28.65
01.38.53
01.56.96
02.07.59
05.53.36
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wensd1111

1 A 02:05
2 A 01:32
3 A 01:41
4 A 01:55
5 A 02:23
6 A 05:57
how do exercise benefit our brain health
in human, increase 5 will promote b level, b is important to health. a in mice function the same as 5. surprising find that i present both in the brain and muscule might connect health and exercise. but how many i do each parts of the body produce and other problem is still under study.

seraph797979

part2
2,1'49
3,1'22
4,1'49
5,2'0
6,2'0

flhuihui1001

2/ 3’0
The black pebble is the evidence of comet exploding in our atmosphere. H stone was found among the yellow glass near Egypet. The glass is the impact of meteorite activity.
To know the origin, scientists conduct some test. Noble gas content extraterrestrial, tiny dimond  comet , carbon rich comet
All  comet like objective enter atmosphere and explode, cook the desert and form the yellow sand.

3/  2’46
The impact of exodus of professor in Syria are talked by IEY.
SPF scholarship are ten time than before.
Ivrine left Syria in 2011 because of his critical position about the government.
Q: academic world in Syria. A: no freedom of speech, many corruption.
Q:role of professor in Syria uprising. A: student started it, but the professor didn’t play a roll because of 1998 experience.

4/  3’28  
Q: what is your position to the government.  A: a lecture after D   arrested. Eg. J . T .
Q: why do you left Syria. A: wife is in danger.
Q: why are schools targeted? A:  afraid of professors.  
Q: number of violence against s is by regime and rebel. Rebel < regime

5/  3’27  
Q the research infrastructure in Syria after the war was damaged. Lab, stuff, students. Universities are under control.
Q refugee movements’ effect. Student cannot study abroad because they lose the document and because they cannot pay for the tuition.
Faculty life in Syria: research collaboration with Egypt are stopped. We lack the research resources.
Q: what can be done? 1. More scholarship 2. Distance-learning 3. Free Syrian universities
What if we don’t support the scientists?
The regime will soon fall. The country will be rebuilt and need intellectual power including a new educational system to bring back the culture.

6/ 3’50
A blood-filled mosquito is found by DG.
The feeding habit is inferred from anatomy or parasite, but this one is a strong evidence to infer the blood-feeding.
The fossil is found a shale sediments. Other molecule than DNA can be retained
DG’s finding support MS: isolated H from dinosaur.

OBSTACLE:  8’52
How do exercise beef up the brain?

A team find the link between the workout and brain.
Much research focus on the muscle cells producing F, then irish, then go to bloodstream and produce brown fact cells that protect against disease.
BS: mice – without P – hypertensive and have holes in the brain
BS suspect F is linked to brain benefits: F elevate B, B ---neuro. The mechanism experiment: mice with running wheel are hard to life weight. Differences of running mice: more F in hippo..
So the case of the brain is the same as the muscle. P boots F, increase BD
And irisin or other unknow mocules passes the signals from blood to brain
B: this finding doesn’t answer the question: how much benefits are from irisin from muscles, how much are from irisin produced in the brain?
The author focus on the irisin and hope to create injectable irisin for treatment for neuro diseases.