OBJECTIVE To investigate the safety of electroacupuncture plus oxytocin for uterine contraction of puerperants. METHODS 276 puerperants with difficult labor were randomly divided into a medication group, treated with intravenous dripping of oxytocin, and an acupuncture plus medication group, in the medication group, intravenous dripping of oxytocin was given, and in the other group, acupunctu...

the aim of the present study was to investigate the influence of nozzle configurations on spray drift and explain the influences using several atomization characteristics (length of spray sheet, spray angle, velocity distribution of flow field, fluctuation of velocity, and droplet size). nozzles manufactured by one company (lechler gmbh, germany) were tested by spraying local tap water in a win...

A liquid forced through an orifice into an immiscible fluid ultimately breaks into drops due to surface tension. Drop formation can occur right at the orifice in a dripping process. Alternatively, the inner fluid can form a jet, which breaks into drops further downstream. The transition from dripping to jetting is not understood for coflowing fluid streams, unlike the case of drop formation in ...

The final stages of pinchoff and breakup of dripping droplets of near-inviscid Newtonian fluids are studied experimentally for pure water and ethanol. High-speed imaging and image analysis are used to determine the angle and the minimum neck size of the cone-shaped extrema of the ligaments attached to dripping droplets in the final microseconds before pinchoff. The angle is shown to steadily ap...

The loss of permeability affects the reduction ferrous burden in cohesive zone a blast furnace (BF). Vanadia–titania magnetite (VTM) various chemical compositions have different metallurgical properties. and softening-melting-dripping properties kinds VTM were investigated. results showed that core sinter or pellet is indirectly reduced to wustite (Fe,Ti)Ox, periphery contains interlinked metal...

In this study, in-situ bulk polymerization was investigated for obtaining flame retardant polystyrene (PS). The halogenated and phosphoric compounds were used as flame retardant additives and Perkadox 30 was used as a synergist. The flammability of the PS was evaluated by thermogravimetric analyzer (TGA), limiting oxygen index (LOI) and UL-94 tests. The results show that polymerization process ...