Orientation of the eruption fissures and composition of the lavas of the Miyakejima volcano is indicative of the competitive processes of the regional tectonic stress and the local stress generated by the activity of a magma plumbing system beneath the volcano. We examined the distributions and magmatic compositions of 23 fissures that formed within the last 2800 years, based on a field survey ...

High-magnesian andesite occurs at Hachimantai, northern Honshu, Japan. Disequilibrium zoning features indicate that the phenocryst minerals were derived from three different magmas. Chemical compositions and zoning profiles are accounted for by two-stage magma mixing: the first mixing occurred between a crystal-free basalt magma and a more differentiated olivine basalt magma; the second stage o...

Submarine volcanic eruptions can be destructive for marine environments and resources. Magma mixing is considered to an important trigger eruptions. Determining the magma residence time from eruption conducive assessing stability of magmatic systems, especially beneath seafloor where in situ volcano monitoring inaccessible. Here, we estimated timescale Iheya Ridge, Okinawa Trough, which charact...

To study the effect of galactic cosmic rays on aerosols and clouds, the Cosmics Leaving OUtdoor Droplets (CLOUD) project was established. Experiments are carried out at a 26.1 m3 tank at CERN (Switzerland). In the experiments, the effect of ionizing radiation on H2SO4 particle formation and growth is investigated. To evaluate the experimental configuration, the experiment was simulated using a ...

This research paper presents a highly significant study on new type of static mixer, using advanced numerical simulations to assess its mixing efficiency. The mixer's unique T-shaped design with spherical chamber and side entrances deviates from traditional designs, resulting in smooth fluid-flow reduced risk blockages. mixer employs hydrodynamic pumps create vortex, enhancing mixing. Numerical...

optical rehabilitation of the patient with aphakia who cannot tolerate contact lenses present a therapeutic challenge. in the absence of capsular support, anterior chamber lenses have been widely used. on the other hand intraocular lens implantation of scleral sutured posterior chamber intraocular lens during penterating keratoplasty or insufficient iris support is recommended. the purpose of t...

Supersonic ejector energy flow devices are extensively used in various applications, such as pumping, mixing, compression, etc. The conventional single-stage (SSE) design approaches inefficient for modelling an efficient because of their inefficiency minimizing mixing losses the chamber, thermodynamic shock constant area diffuser, and utilization redundant discharged momentum at exit first stag...

A new instrument for the on-line determination of ammonia was developed. Since ammonia is a rather sticky compound, sampling losses were minimised with a new sampling device where the ammonia was transferred to the liquid phase only 5 mm after the inlet tip. The liquid phase was then analyzed by long pathlength absorption spectrophotometry using the Berthelot reaction with phenol and hypochlori...

The throat diameter is one of the main parts jetpump, a mixing chamber which has function low-speed secondary fluids with high-speed primary fluids. purpose this study was to determine effect jetpump variation 7,9,11 mm and discharge 10,15,20 L / minute on suction pressure pump efficiency. highest test results were variations in 11 20 net 3.8 minute, an average 23.8 -0.25 efficiency value by 50...