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发现可以给手机充电的细菌

时间:2006-09-05 16:00来源:互联网 提供网友:wdyllff   字体: [ ]
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Bacteria Discovered To Recharge Cell Phone
  
     

   A microbe called Rhodoferax Ferrireducens,found in the mud at Oyster1 Bay,Virginia,has been discovered to transfer electrons directly onto an electrode as it metabolizes sugar into electricity."You can harvest enough electricity to power a cell phone battery for about four days from a sugar cube,"researcher Derek Lovley says."A cup of sugar contains enough power to light a 60-watt light bulb for about 17 hours."This process is accomplished2 at an astonishing 80% efficiency and produces only carbon dioxide gas as a byproduct.Previous similar reactions progressed at only 1% efficiency and required toxic3 metallic4 mediator5 chemicals to assist,avoided here because the bacteria grows happily as a slime colony directly on the electrode plates.The bioreaction was found to work not only with glucose6
  but also with the fruit sugar fructose,with sucrose
  (found in sugar cane7 and sugar beet)and even xylose,a sugary byproduct of wood and straw.In addition,the bacterium8 is rugged9 and stable,able to grow at temperatures ranging from four to 30℃,with 25℃the optimum.If engineering obstacles can beovercome and manufacturing techniques devised,a power cell based on this process could one day be as compact as household batteries.


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1 oyster w44z6     
n.牡蛎;沉默寡言的人
参考例句:
  • I enjoy eating oyster; it's really delicious.我喜欢吃牡蛎,它味道真美。
  • I find I fairly like eating when he finally persuades me to taste the oyster.当他最后说服我尝尝牡蛎时,我发现我相当喜欢吃。
2 accomplished UzwztZ     
adj.有才艺的;有造诣的;达到了的
参考例句:
  • Thanks to your help,we accomplished the task ahead of schedule.亏得你们帮忙,我们才提前完成了任务。
  • Removal of excess heat is accomplished by means of a radiator.通过散热器完成多余热量的排出。
3 toxic inSwc     
adj.有毒的,因中毒引起的
参考例句:
  • The factory had accidentally released a quantity of toxic waste into the sea.这家工厂意外泄漏大量有毒废物到海中。
  • There is a risk that toxic chemicals might be blasted into the atmosphere.爆炸后有毒化学物质可能会进入大气层。
4 metallic LCuxO     
adj.金属的;金属制的;含金属的;产金属的;像金属的
参考例句:
  • A sharp metallic note coming from the outside frightened me.外面传来尖锐铿锵的声音吓了我一跳。
  • He picked up a metallic ring last night.昨夜他捡了一个金属戒指。
5 mediator uCkxk     
n.调解人,中介人
参考例句:
  • He always takes the role of a mediator in any dispute.他总是在争论中充当调停人的角色。
  • He will appear in the role of mediator.他将出演调停者。
6 glucose Fyiyz     
n.葡萄糖
参考例句:
  • I gave him an extra dose of glucose to pep him up.我给他多注射了一剂葡萄糖以增强他的活力。
  • The doctor injected glucose into his patient's veins.医生将葡萄糖注入病人的静脉。
7 cane RsNzT     
n.手杖,细长的茎,藤条;v.以杖击,以藤编制的
参考例句:
  • This sugar cane is quite a sweet and juicy.这甘蔗既甜又多汁。
  • English schoolmasters used to cane the boys as a punishment.英国小学老师过去常用教鞭打男学生作为惩罚。
8 bacterium BN7zE     
n.(pl.)bacteria 细菌
参考例句:
  • The bacterium possibly goes in the human body by the mouth.细菌可能通过口进入人体。
  • A bacterium is identified as the cause for his duodenal ulcer.一种细菌被断定为造成他十二指肠溃疡的根源。
9 rugged yXVxX     
adj.高低不平的,粗糙的,粗壮的,强健的
参考例句:
  • Football players must be rugged.足球运动员必须健壮。
  • The Rocky Mountains have rugged mountains and roads.落基山脉有崇山峻岭和崎岖不平的道路。
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TAG标签:   有声杂志  手机充电  细菌
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