腰背痛(low back pain,LBP)是一类严重影响患者生活质量的常见病症,可导致患者运动功能障碍,甚至丧失生活自理能力。每年由腰背痛所产生的直接或间接经济损失数额巨大。据统计,仅1998年,美国因腰背痛治疗的总医疗支出较上一年增...腰背痛(low back pain,LBP)是一类严重影响患者生活质量的常见病症,可导致患者运动功能障碍,甚至丧失生活自理能力。每年由腰背痛所产生的直接或间接经济损失数额巨大。据统计,仅1998年,美国因腰背痛治疗的总医疗支出较上一年增加了263亿美元[1],每年用于支付腰背部损伤性疼痛的劳动赔偿费用占年度总赔偿额度的2%[2]。展开更多
Vegetation provides potential erosion controland slope protection ,through its hydrological and me chanicalinteraction ofplants withlocalclimate and soil.Thetheoreticalunderstanding ofthese vege tative effectsis the b...Vegetation provides potential erosion controland slope protection ,through its hydrological and me chanicalinteraction ofplants withlocalclimate and soil.Thetheoreticalunderstanding ofthese vege tative effectsis the base ofslope eco - engineering .In the pastfew decades,theimportance of vege tation in protecting slopes has been stressed by many researchers.The greater awarenessthat vegeta tion can play a range ofrolesin slope protection has madeitincreasingly a valuabletoolin naturalen vironmentalprotection and civilengineering .and this knowledge hasled to aincreasing application ofvegetation types world - wide .Thoughitisstilla kind ofyoungtechniques,anincreasing amountofexperience ofslope eco - engineering of vegetation is gathering from the past practices,and thelagernumber ofsuccessful examples ofits applicationsis showing its greatfuture .展开更多
文摘腰背痛(low back pain,LBP)是一类严重影响患者生活质量的常见病症,可导致患者运动功能障碍,甚至丧失生活自理能力。每年由腰背痛所产生的直接或间接经济损失数额巨大。据统计,仅1998年,美国因腰背痛治疗的总医疗支出较上一年增加了263亿美元[1],每年用于支付腰背部损伤性疼痛的劳动赔偿费用占年度总赔偿额度的2%[2]。
文摘Vegetation provides potential erosion controland slope protection ,through its hydrological and me chanicalinteraction ofplants withlocalclimate and soil.Thetheoreticalunderstanding ofthese vege tative effectsis the base ofslope eco - engineering .In the pastfew decades,theimportance of vege tation in protecting slopes has been stressed by many researchers.The greater awarenessthat vegeta tion can play a range ofrolesin slope protection has madeitincreasingly a valuabletoolin naturalen vironmentalprotection and civilengineering .and this knowledge hasled to aincreasing application ofvegetation types world - wide .Thoughitisstilla kind ofyoungtechniques,anincreasing amountofexperience ofslope eco - engineering of vegetation is gathering from the past practices,and thelagernumber ofsuccessful examples ofits applicationsis showing its greatfuture .