首页
登录
职称英语
Low speed bicycle crashes can badly injure—or even kill—children if they fal
Low speed bicycle crashes can badly injure—or even kill—children if they fal
游客
2023-07-22
57
管理
问题
Low speed bicycle crashes can badly injure—or even kill—children if they fall onto the ends of the handlebars. So a team of engineers is redesigning the humble handlebar in a bid to make it safer.
Kristy Arbogast, a bioengineer at the Children’s Hospital of Philadelphia in Pennsylvania, began the project with her colleagues after a study of serious abdominal injuries in children in the past 30 years showed that more than a third were caused by bicycle a accidents. "The task was to identify how the in juries occurred and come up with some countermeasures," she says.
By interviewing the children and their parents, Arbogast and her team were able to reconstruct many of the accidents and identified a common mechanism responsible for serious injuries. They discovered that most occur when children hit an obstacle at slow speed, causing them to topple over. To maintain their balance they turn the handlebars through 90 degrees—but their momentum forces them into the end of the handlebars. The bike then falls over and the other end of the handlebars hits the ground, ramming it into their abdomen.
The solution the group came up with is a handgrip fitted with a spring and damping system. The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact. The group hopes to commercialize the device, which should add only a few dollars to the cost of a bike. "But our task has been one of education because up until now, bicycle manufacturers were unaware of the problem, says Arbogast.
The team has also approached the US Consumer Product Safety Commission to try to persuade manufacturers to adopt the new design. A decision is expected later this year. [br] Why are some engineers trying to improve the handlebars?
选项
答案
They may kill children.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2859833.html
相关试题推荐
Languagelearningbeginswithlistening.Individualchildrenvarygreatlyin
Languagelearningbeginswithlistening.Individualchildrenvarygreatlyin
GoingonlineisafavoritepastimeformillionsofAmericanchildren.Almost
GoingonlineisafavoritepastimeformillionsofAmericanchildren.Almost
Manyparentsare【S1】______aboutthefactthattheirchildrenplaymanyvideo
Manyparentsare【S1】______aboutthefactthattheirchildrenplaymanyvideo
Manyparentsare【S1】______aboutthefactthattheirchildrenplaymanyvideo
Manyparentsare【S1】______aboutthefactthattheirchildrenplaymanyvideo
Manyparentsare【S1】______aboutthefactthattheirchildrenplaymanyvideo
Manyparentsare【S1】______aboutthefactthattheirchildrenplaymanyvideo
随机试题
Ifsomebodyis______,heisgivenamedalorotherhonorasanofficialreward
MuchofthedebateaboutmulticulturalismintheUKiscrass,ignorantandmi
HighinthemountainsofsouthernFrance,thesleepytownofAurillachasfe
[originaltext]M:I’vebeenworkingreallyhardinthepastsemesterandIgota
下列哪个电压不是电压互感器二次额定电压数值()A.70.7v B.100v
一个为期2年的项目已经实施了1年,在项目期间不同的项目成员进进出出,团队成员已经
下列关于婚后财产的说法错误的是()。A:我国实行的是夫妻共同财产制 B:双方没
一个人去俄罗斯旅游,他在逛街的时候发现两个很奇怪的人:一个人在前面挖坑,一个人在
(2020年真题)某投资者当日开仓买入10手3月份的沪深300指数期货合约,卖出
下列情形可以将投标报价高报的是()。A.施工条件好、工作简单、工程量大的工
最新回复
(
0
)