首页
登录
职称英语
A fledgling firm. EcoLean, in Sweden, has developed a new packaging material
A fledgling firm. EcoLean, in Sweden, has developed a new packaging material
游客
2025-04-27
36
管理
问题
A fledgling firm. EcoLean, in Sweden, has developed a new packaging material. Unlike conventional substance, it takes very little energy to produce, is made up mostly of a natural material in abundant supply and, when exposed to sunlight, disappears in a matter of hours. It could go a long way toward easing the problems of a litter-strewn world. The brain behind EcoLean is chemist Ake Rosen.
A monument to Rosen’s inspiration can be found in the forecourt of EcoLean s main plant in Helsingborg in southern Sweden. It is a giant egg. Eggshells, it happens, are 95 percent calcium carbonate. And when it comes to eggs, they are a perfect packaging material- though a little too brittle. Rosen, however, found a way to improve on nature’s formula. The other 5 percent of eggshells consists of a crucial "binding agent" that keeps the chalk from turning into dust and toughens the shells. Instead of using the natural protein as a binding agent, Rosen used polylefins(聚烯烃), a type of plastic derived from natural gas. After experimenting with the proportions, Rosen hit upon a Lean Material that consists of up to seventy percent chalk and thirty percent polylefins.
Lean Material looks and feels like conventional plastic, but it isn’t. According to Rosen’s tests, EcoLean asserts that it can be as strong as glass or as pliable as rubber, and it could be a viable, and cheaper, substitute for plastic, cardboard or aluminum packaging. For conservationists, the material has numerous benefits. Even though it consists in part of plastic, which costs energy to produce, polyolefins are pretty low on the eco-hate list. They degrade into carbon and oxygen. Besides, less plastic means using less oil, the essential component in plastic and a nonrenewable resource. Chalk, the main ingredient, is abundant (and cheap) on every continent in the world.
But Lean Material’s most remarkable charm is apparent only when it is ready for the garbage. Bottles, yogurt tubs or candy wrappers made of Lean Material would all he degradable. Leave them sitting on the picnic table and in a month or two sunlight will have reduced them to sand. Or, once in the incinerator the resulting ash will be rich in carbonates, good for making the soil less acidic. As a bonus, the material also has no "memory. "
Stamp
on a Lean Material bottle and it stays crushed, taking up less space in landfill. (399 words) [br] "Stamp" in the last paragraph may probably means______.
选项
A、an indication of postage
B、the act of bringing the foot down onto something forcibly
C、a mark like a seal
D、a label
答案
B
解析
这里的stamp是“踩”之意。
转载请注明原文地址:https://tihaiku.com/zcyy/4055512.html
相关试题推荐
Advanceinfoodpreservationgaveconsumersindevelopedcountriesaccessto___
Packagingisdesignedsoastoencourageimpetuousshopping.A、extravagantB、care
ThegeneralmaterialDNAcontainscodedinformationforthesynthesisofprotein
Afledglingfirm.EcoLean,inSweden,hasdevelopedanewpackagingmaterial
Afledglingfirm.EcoLean,inSweden,hasdevelopedanewpackagingmaterial
Edisontestedmorethanonethousandmaterialstoseeiftheycould_____electric
Everyonewhoheardthestoryfounditincredible.A、irresistibleB、immaterialC、u
Inthe1960s,medicalresearchersThomasHolmesandRichardRahedevelopeda
Anewmaterial_____,wehavegoodreasontobeoptimistic.A、developedB、beingdev
Thus______betweenthedevelopedanddevelopingcountries.A、arosethedivisionB
随机试题
[originaltext]M:Today,we’veProfessorMcKayonourMorningTalkShow.Goodmo
Fear______usasweapproachedtheoldcastlewhichwasbelievedtobeghost-haun
当企业经营周转资金出现缺口,可以申请的贷款是()。A.项目贷款 B.固定资
水钠潴留作用最弱的糖皮质激素是A、泼尼松 B、泼尼松龙 C、甲泼尼松龙 D
中药变色通常与()无关。A.湿度 B.空气中氧的作用 C.阴凉干燥
认为“学校的教学应以活动为核心”的课程论是()。A.学科中心课程论 B.社会
玄参的主治病证有A.咽喉肿痛 B.温热病热入营分 C.痈肿疮毒 D.瘰疬痰
属于工程建设定额按照投资的费用性质分类的是( )A.建筑工程定额 B.设备安
(2020年真题)下列财产中,可用于设立抵押权的是()。A.土地所有权 B.被
自行式起重机进行选用时应注意()。A.起重机的站车位置与起重机的幅度无关 B
最新回复
(
0
)