Adding rubber particles to concrete can improve its brittleness, but it also significantly reduces its compressive strength.In order to maintain the compressive strength of concrete unchanged and enhance its tensile strength and toughness, waste steel fibers are added to rubber concrete (RC).This not only achieves the reuse of solid waste materials
This study introduced a new design of a low-cost customized Gradeschool Footwear A-scan Non Destructive Testing (NDT) unit using microcontroller-based scanning motion.the scanning unit from previous research has limitations in scanning envelope area and ability of detection.It can only detect large defects.To solve the limitations mentioned above,
It is well established that the basis for flagellar and ciliary movements is ATP-dependent sliding between adjacent doublet microtubules.However, the mechanism for converting microtubule sliding into flagellar and ciliary movements has long remained unresolved.The author has developed new sperm models Champagne Stoppers that use bull spermatozoa di
Abstract: For transverse isotropic fast formations, the evaluation method of the least horizontal principal stress by using logging data is an important unresolved issue.An innovative method is proposed to solve this problem by derivation of five independent stiffness coefficients (C11, C33, C44, C66 and C13) in this kind of formation.Based on the