手机APP下载

您现在的位置: 首页 > 在线广播 > 科学美国人 > 科学美国人技术系列 > 正文

科学美国人60秒:3D打印珊瑚能保护珊瑚礁

来源:可可英语 编辑:aimee   可可英语APP下载 |  可可官方微信:ikekenet
  


扫描二维码可进行跟读训练
  下载MP3到电脑  [F8键暂停/播放]   批量下载MP3到手机
kkr2CQWsjHhiRK

-Ph#(x=Soa,

This is Scientific American's 60-second Science, I'm Annie Sneed.
Coral reefs are among the most productive ecosystems in the world. They're also in serious danger—climate change and other threats are killing them off. But researchers have come up with an invention they think could help the reefs: 3-D-printed corals.
At the heart of reef ecosystems lies a symbiosis between corals and algae.
"Corals use light, they're photosynthesizing, so they have microscopic algae inside their tissues. And these use light to generate energy, and that energy is then transferred to the coral animal host. And that animal host, in return, transfers certain by-products to the algae, so they have a symbiosis going on."
Daniel Wangpraseurt, a coral reef scientist at the University of Cambridge.
This tight-knit bond between algae and corals is what makes reefs so incredibly productive. And because of this symbiosis, corals have evolved sophisticated skeletal and tissue structures for collecting sunlight.
"So usually, you would have this rapid light attenuation. But through the skeleton, light is pumped and guided into deeper, otherwise shaded areas. So there's a lot of tricks that corals use. And in our work, we copied some of them."

pEaK*gb;cZ~pPq

珊瑚礁.jpg
Wangpraseurt and his colleagues imaged corals to analyze their skeletal and tissue makeup. They then used a 3-D bioprinter to build an intricate structure that mimics real corals. The printed corals were made of biomaterials like cellulose and had algae embedded in them. And because the researchers were able replicate coral structure so well, the algae grew tremendously—up to 100 times more densely than they normally grow in the lab.
Wangpraseurt says their 3-D-printed creation could be used as a medium to grow algae to produce bioenergy and also as a tool for studying the coral-algae symbiosis.
"At the same time, of course, there are many other ways this technology can be further scaled and improved to create something like artificial corals in the future. So this is just the first step, where we created the animal host, but we're now continuing to further replicate this animal-algal symbiosis. And we're developing model systems. And eventually, of course, it would be nice that this can have direct applications in coral reef restoration."
Thanks for listening for Scientific American's 60-second Science. I'm Annie Sneed.

I3XT|t]~hoV[N^

6K0|N@c[K7+Vr.ataVgq&eCM-@hld~n]t!Tf|c![-.c9Z

重点单词   查看全部解释    
restoration [.restə'reiʃən]

想一想再看

n. 恢复,归还,复位

 
productive [prə'dʌktiv]

想一想再看

adj. 能生产的,有生产价值的,多产的

联想记忆
medium ['mi:diəm]

想一想再看

n. 媒体,方法,媒介
adj. 适中的,中等

联想记忆
microscopic ['maikrə'skɔpik]

想一想再看

adj. 显微镜的,极小的,微观的

 
produce [prə'dju:s]

想一想再看

n. 产品,农作物
vt. 生产,提出,引起,

联想记忆
attenuation [ə,tenju'eiʃən]

想一想再看

n. 衰减;变薄;稀释

 
invention [in'venʃən]

想一想再看

n. 发明,发明物,虚构,虚构物

 
sophisticated [sə'fistikeitid]

想一想再看

adj. 诡辩的,久经世故的,精密的,老练的,尖端的

联想记忆
genuine ['dʒenjuin]

想一想再看

adj. 真正的,真实的,真诚的

联想记忆
generate ['dʒenə.reit]

想一想再看

vt. 产生,发生,引起

联想记忆

发布评论我来说2句

    最新文章

    可可英语官方微信(微信号:ikekenet)

    每天向大家推送短小精悍的英语学习资料.

    添加方式1.扫描上方可可官方微信二维码。
    添加方式2.搜索微信号ikekenet添加即可。