Shotcrete often has the disadvantages of high rebound rate and serious construction loss.By optimizing the mix ratio of shotcrete, and considering the three factors of water-cement ratio, sand ratio and cementitious material content, this paper designs the orthogonal test to investigate the influence of the three factors on the rebound rate of shot
To study the dynamic characteristics of planetary reducer mechanism of shearer cutting unit under complex coal Vegetable / Fruit Wedger Parts seam condition reliability,the shearer rigid- flexible coupling model is established.The analysis and dynamic simulation of the shearer outer drum load under the extreme condition are carried out,and the load
Introduction Medical students list stigma and lack of time as reasons to avoid seeking mental health care.Many patients do not receive appropriate mental health care due to a lack of knowledge regarding available treatments among their medical providers.We created this activity to enhance medical student knowledge and well-being Inline - Protective