Abstract Wind turbine rotor blades are subject to highly dynamic loads and designed for life cycles of at least 20 years, which means that materials subjected high-cycle fatigue. Fatigue is a design-driving loading current future blades. Bond lines exposed multi-axial stress-state due the anisotropic thin-walled blade structure curved, tapered, twisted, airfoil-shaped geometry. To eliminate und...

Abstract In order to study the blasting vibration effect of different points tunnel bore, pilot in multi-arch was used carry out test bore. The results show that: 1) peak velocity generated by at initiation hole is different, and magnitude reverse > Intermediate Forward initiation; 2) frequency distribution range signal under three positions is: forward Reverse At same time, more conducive m...

conclusions the findings of this survey showed that shortening the duration of pre-adenotonsillectomy fasting period and hydration of patients several hours prior to the operation might be effective in decreasing postoperative pain and facilitating postoperative oral feeding initiation. nevertheless this method does not seem to prevent postoperative nausea and vomiting. results the amount of ac...

In the present work, a specific three-point bending test is applied to evaluate how roughness can impact bond strength (adherence) and mechanism of interfacial failure initiation. The study conducted using an aluminum alloy 2024-T3 as substrate DGEBA (polyepoxide bisphenol A diglycidyl ether) /DETA (diethylenetriamine) adhesive, considering different abrasive surface treatments. An optimal reac...

background & aim: the effect of the anesthetic substance given to the mother during cesarean section, and the pain experienced by the mother after the intervention practiced on the mother during cesarean section delay the mother-infant interaction and the initiation breastfeeding time. this study has been conducted to determine the effects of breastfeeding counseling given to the mothers that g...