An analysis was made of the application Stud Welding hardware welding technologies depending on welded structures used, duration process, shape stud butt and consumables used. The use CD technology for metalware to thin-sheet panels is substantiated. essence process formation a joint described, which consists in explosive evaporation protrusion at end during discharge capacitor banks, excitatio...

To investigate the fatigue performance of stud connectors steel-concrete structures, crack propagation analysis and life calculation were carried out. Firstly, finite element model with initial based on linear elastic fracture mechanics (LEFM) was established, parameter stress intensity factors (SIFs) studs cracks different geometric sizes performed. Then, mixed-type I-type calculated, variatio...

Analysis of highly purified extracts from spinach shoots by combined gas chromatography-mass spectrometry has demonstrated the presence of six 13-C-hydroxylated gibberellins (GAs): GA(53), GA(44), GA(19), GA(17), GA(20), and GA(29). The major GAs were GA(17), GA(19), and GA(20), whereas the other three GAs occurred in trace amounts. Structural considerations suggest that the six GAs identified ...

Light-gauge steel framed (LSF) walls used in low- and mid-rise buildings are usually sheathed with gypsum plasterboard to protect the thin-walled studs fire. The structural failures of these fire mostly associated local in-plane shear or pull-through at their stud-to-gypsum sheathing screw fastener connections. reductions mechanical properties cold-formed elevated temperatures significantly red...

licorice is obtained from glycyrrhiza glabra (g. glabra) in iran. glycyrrhizin is the main constituent of g. glabra and has several pharmacological effects. it is hydrolyzed to glycyrrhetic acid (ga) in the intestine after oral administration. in this study, a novel hplc method was used to determine the concentration of ga in rat plasma after oral administration of licorice aqueous extract. the...