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
42
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 the manufactures did not accept the new design.
选项
答案
Bicycle manufactures were unaware of the problem.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2859840.html
相关试题推荐
Childrenlovesoildrinks___________(因为它味道很甜而且有多种口味).becauseofthesweettas
Wefindthatbrightchildrenarerarelyheldbackbymixed-abilityteaching.
Wefindthatbrightchildrenarerarelyheldbackbymixed-abilityteaching.
[originaltext]W:Iintendtobuysomefruitforthechildren,Theseapplesandba
[originaltext]W:Iintendtobuysomefruitforthechildren,Theseapplesandba
[originaltext]W:Iintendtobuysomefruitforthechildren,Theseapplesandba
[originaltext]W:Iintendtobuysomefruitforthechildren,Theseapplesandba
[originaltext]W:Iintendtobuysomefruitforthechildren,Theseapplesandba
Languagelearningbeginswithlistening.Individualchildrenvarygreatlyin
Languagelearningbeginswithlistening.Individualchildrenvarygreatlyin
随机试题
Writeanoteofabout50-60wordsbasedonthefollowingsituation:The
TrustMe,IAmaRobotRobotsafety:asrobots
[originaltext]TheDeadSeaisshrinking.LocatedbetweenIsraelandJordan,it’
[originaltext]Fivechildrenareamong11peoplewhodrownedafteramigrant
下列属于我国行政复议受案范围的是:()A、甲市公安局处理治安案件出具的调解书
吸入给药的方式不包括A.定量气雾剂吸入 B.持续雾化吸入 C.贮雾器连接压力
对看跌期权而言,下列说法正确的有()。 I.市场价格低于协定价格时看跌期权为实
油浸站用(接地)变呼吸器堵塞,负荷或温度明显变化下,呼吸器较长时间不呼吸属于(_
“应付账款”账户的期初贷方余额为8000元,本期贷方发生额为12000元
男性,48岁。2小时前参加婚宴后感上腹不适、恶心,随即呕吐大量混有食物残渣的鲜血
最新回复
(
0
)