It is well-known that practical vibro-impact systems are often influenced by random perturbations and external excitation forces,making it challenging to carry
春分过后天气转暖,该如何养生呢?有些养生误区,必须远离.rn误区一:放任春困rn春天到了,老年人的睡眠时间也应调整了一下.春季犯困常见,从养生方面来说,白天一犯困就睡觉,这不
Understanding three-dimensional(3D)in situ stress field is of key importance for estimating the stability of large deep underground cavern groups near valleys.H
Microbially induced calcite precipitation(MICP)is a recently developed technique for microbiological ground improvement that has been applied for mitigating var
“最美不过夕阳红,温馨又从容……”每天,都会从我家传出洪亮而雄浑的歌声——这是我耄耋之年的老父亲在练声呢.rn父亲在教育岗位上工作了35年,乍一退下来,难以割舍的校园情
为掌握10 kV居民区配电变压器振动在建筑中的衰减规律,将实测的变压器振动加速度转化为激励力,作用于剪力墙和框架建筑上,采用有限元法仿真研究变压器振动在建筑中的衰减特性
The influence of pavement vibration on tire adhesion is of great significance to the structure design of vehicle and pavement.The adhesion between tire and road
To effectively reduce the field concentration around a hole or crack,an anti-plane shear problem of a nano-elliptical hole or a nano-crack pasting a reinforceme
Based on the nonlinear constitutive equation,a piezoelectric semiconductor(PSC)fiber under axial loads and Ohmic contact boundary conditions is investigated.The
4月11日是“世界帕金森病日”.帕金森病是一种运动障碍性疾病,老年人多见,平均发病年龄为60岁左右.在我国,帕金森病已成为继肿瘤、心脑血管病之后中老年人的“第三大杀手”.