注册 登录  
 加关注
   显示下一条  |  关闭
温馨提示!由于新浪微博认证机制调整,您的新浪微博帐号绑定已过期,请重新绑定!立即重新绑定新浪微博》  |  关闭

孙广趁教育教学工作室

真实记录教育教学工作

 
 
 

日志

 
 

Getting Water From the Air(九年级阅读)  

2016-04-11 14:49:09|  分类: 九年级阅读 |  标签: |举报 |字号 订阅

  下载LOFTER 我的照片书  |
       A desert beetle, a cactus and a pitcher plant(猪笼草) have each provided inspiration for scientists who have designed a surface that uses nature’s own ways of catching water droplets and transporting them for safe storage.They believe it is ten times more effective than the most efficient water condensation (冷凝) surfaces currently in commercial use.
  The development could have dramatic implications(可能的影响) for a range of applications, from survival in dry environments to commercial processes that require rapid and efficient water condensation.
  The surface is so effective that it can draw water vapor from the air and even transport it against the influence of gravity or temperature changes. “Thermal power plants(火力发电厂), for example, rely on condensers to quickly change steam to liquid water. This design could help to speed up that process and even allow for operation at a higher temperature, significantly improving the overall energy efficiency,” said Philseok Kim of Harvard University.
  Current approaches to pulling water vapor from the air use technology that promotes either the growth of water droplets or the “shedding(滴落)” of water droplets away from the condensation area—but rarely both together.
  It is found that millimeter-sized bumps (凸块) on the back of the Namib desert beetle have evolved to encourage the condensation of water into large droplets. The scientists analyzed the shape and size of these bumps to design a similar bumpy surface. They combined this with the features of cactus spines(刺毛), which makes the movement of water down a slope as fast as possible. Finally, they added the slippery surface of a pitcher plant. This encourages the movement of water and can work against gravity if necessary.
  “Everybody is excited about bio-inspired(仿生学的)materials research,” said Joanna Aizenberg, another lead author of the study.“However, so far, we tend to mimic one natural systemat a time. Our research shows that a complex bio- inspired approach is a new, promising direction in bionics(仿生学).”
  评论这张
 
阅读(234)| 评论(1)
推荐 转载

历史上的今天

在LOFTER的更多文章

评论

<#--最新日志,群博日志--> <#--推荐日志--> <#--引用记录--> <#--博主推荐--> <#--随机阅读--> <#--首页推荐--> <#--历史上的今天--> <#--被推荐日志--> <#--上一篇,下一篇--> <#-- 热度 --> <#-- 网易新闻广告 --> <#--右边模块结构--> <#--评论模块结构--> <#--引用模块结构--> <#--博主发起的投票-->
 
 
 
 
 
 
 
 
 
 
 
 
 
 

页脚

网易公司版权所有 ©1997-2017