【研究背景】全球范围内女性吸烟趋向年轻化,吸烟会导致女性妊娠率下降、自然流产率升高、活产率下降等。但香烟烟雾暴露对卵母细胞的影响及其机制仍然未明了。本研究通过观察
A well-known pseudopotential is used to investigate the superconducting state parameters (SSP), viz., electron-phonon coupling strength, Coulomb pseudopotential
背景:结直肠癌是最常见的消化道恶性肿瘤之一。在中国则占据常见恶性肿瘤的第3到第4位,其发病率和病死率均有逐年上升的趋势。由于目前对结直肠癌的病因和发病机制尚未完全明
目的探讨康复新液对小鼠压疮创面的作用效果,通过对相关因子的表达水平测定讨论康复新液促进压疮创面愈合的作用机制。方法将88只实验小鼠进行随机分组,分别为模型对照组、阳性对照组、康复新液低剂量实验组、康复新液高剂量实验组,根据“缺血-再灌注”损伤机制,通过体外磁片加压法制备早期压疮模型,四组小鼠换药时均以无菌生理盐水清创,模型对照组采用生理盐水均匀喷洒于创面,阳性对照组使用262.5IU/cm~2贝复
Nonlinear bending of cantilever incompressible poroelastic beams subjected to a uniform load is investigated with the constraint that fluid flow is only in the
The permutation flowshop scheduling problem (PFSP) is one of the most well-known and well-studied production scheduling problems with strong industrial backgrou
背景:缺血性脑卒中作为一个重要的难治性疾病,严重影响人类健康与生活质量,其发病率、死亡率及致残率极高,近几年中国缺血性脑卒中人数以每年9%的增长率增长,在人口死因构成中居第
To bear more loads for heavy truck pistons, the shape of heavy truck piston pinhole is often designed as non-cylinder form. Current methods cannot meet the need
采用归纳法 ,逐次分段证明了多组多滞后定常线性连续系统 ,多组多滞后时变线性连续系统 ,多组多滞后非线性连续系统的比较原理 ,获得了若干简洁的充分条件 .
By inductive m