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
2024-02-23
52
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] In which of the following ways does the handgrip work?
选项
答案
It reduces the dangerous forces in bicycle accidents.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3476103.html
相关试题推荐
ItisnotunusualforChinesechildrentogetmoneyfromtheirparents,gran
ItisnotunusualforChinesechildrentogetmoneyfromtheirparents,gran
ItisnotunusualforChinesechildrentogetmoneyfromtheirparents,gran
ItisnotunusualforChinesechildrentogetmoneyfromtheirparents,gran
ItisnotunusualforChinesechildrentogetmoneyfromtheirparents,gran
ItisnotunusualforChinesechildrentogetmoneyfromtheirparents,gran
ItisnotunusualforChinesechildrentogetmoneyfromtheirparents,gran
ItisnotunusualforChinesechildrentogetmoneyfromtheirparents,gran
Morethanthree-quartersofthechildrenweinterviewedsaidthey’resometim
Morethanthree-quartersofthechildrenweinterviewedsaidthey’resometim
随机试题
PASSAGEONE[br]WherewilltheG8’srealresolvebetestedaccordingtoSchiffe
Whathappenedtothewoman?[br][originaltext]M:Howareyoufeelingnow?W:N
Ifwecan______thisrecession,wewillbeingoodshape.A、breakthroughB、got
Theshopsheusuallydidhershopping______everySaturdayhasbeenpulleddown
OnPublicSpeakingI.People’sfrequentresponsetogivi
驾驶机动车驶入居民小区时,为了警告出入口处车辆及行人,应连续鸣喇叭。()
超声测量胎儿股骨长度,怎样才能避免较大的测量误差A.采用线阵式超声探头 B.采
( )不仅是对工程外表质量进行检查,同时也是对部分使用功能和使用安全所作的一次全
Thechangeinthatvillagewasmiraculou
患者女,65岁。无牙颌,全口总义齿修复5年,近来感义齿不合适,口角疼痛。检查见双
最新回复
(
0
)