A novel ultrasonic vibration enhanced friction stir welding (UVeFSW) process was employed to join the rolled 2195 aluminium-lithium alloy of 4 mm thickness.The Books effects of superimposing ultrasonic on the macro metallograph,microhardness and tensile properties of welded joints were compared and analyzed.The effect of process parameters on the w
Abstract Background Most embryos that spontaneously abort during early pregnancy are found to have Knee Sleeves chromosomal abnormalities.The purpose of this study is to explore the factors involved in chromosome aberrations during embryogenesis.Methods A case-case study was performed to compare the risk factors for spontaneous abortion with and wi
Bedform fields from the Piedras River mouth (Huelva, SW Spain) have been studied using side-scan sonar techniques, combined with visual scuba-dives, and direct geometric Chai Tea measuring.The dominant flow regime has been determined from the results in these tidal environments, where erosive processes dominate during ebb, transporting sand as a be
Doughnuts are one of the most popular sweet foods for people of all ages around the Oil Warmers world.Although made from simple ingredients such as flour, sugar, eggs, yeast, milk powder, salt, water, and margarine, however producing doughnuts requires special techniques to produce good-quality doughnuts.It needs more energy, even physically and el
Historically, fire incidents in high-rise buildings reveal that Fire and Rescue Services frequently rely on the stay-put tactic (i.e., occupants of high-rise buildings should remain in their apartments) during an inferno.Recent fire occurrences in Books high-rise buildings reveal that there are two opposing viewpoints on the stay-put tactic.First,