one of the mostly used enhanced oil recovery methods is the injection of water or gas under pressure to maintain or reverse the declining pressure in a reservoir. several parameters should be optimized in a fluid injection process. the usual optimizing methods evaluate several scenarios to find the best solution. since it is required to run the reservoir simulator hundreds of times, the process...

The total solar eclipse that occurred over the Arctic region on 20 March 2015 was seen as a partial eclipse over much of Europe. Observations of this eclipse were used to investigate the high time resolution (1 min) decay and recovery of the Earth's ionospheric E-region above the ionospheric monitoring station in Chilton, UK. At the altitude of this region (100 km), the maximum phase of the ecl...

One of the mostly used enhanced oil recovery methods is the injection of water or gas under pressure to maintain or reverse the declining pressure in a reservoir. Several parameters should be optimized in a fluid injection process. The usual optimizing methods evaluate several scenarios to find the best solution. Since it is required to run the reservoir simulator hundreds of times, the process...

In order to assess the thermo-hydraulic modelling capabilities of various geothermal simulators, a comparative test suite was created, consisting set cases designed with conditions relevant low-enthalpy range operations within European HEATSTORE research project. an effort increase confidence in usage each simulator, used as benchmark by 10 simulators diverse origin, formulation, and licensing ...

Space-based telescopes offer unparalleled opportunities for characterising exoplanets, Solar System bodies and stellar objects. However, observatories in low Earth orbits (e.g. Hubble, CHEOPS, Twinkle an ever increasing number of cubesats) cannot always be continuously pointed at a target due to obscuration. For exoplanet observations consisting transit, or eclipse, spectroscopy this causes gap...

Can you name a science event that will engage 100 million people? I can: total eclipse of the Sun. NASA surveys found many people saw 2017 Great American Eclipse, either in person or online. In 2023 and 2024, two solar eclipses be visible throughout US, we have great opportunity to enable students others enjoy rare spectacle (Fig. 1). This article is help prepare yourself, students, friends, ne...

The petroleum industry operates under great uncertainty. Achieving an efficient approach to quantify uncertainty in oil production models is of key importance supporting decision-makers find suitable strategies for mitigating risks and maximizing profit. Uncertainty quantification commonly performed based on the Monte Carlo this a very time-consuming process by using physics-based developed res...

purpose: to assess various aspects of integrating a virtual reality (vr) simulator in the training of ophthalmology residents methods: in this qualitative study, some aspects of the vr eyesi simulator as a health technology were assessed. data was collected using a multiple-choice questionnaire and several deep interviews addressed to users and administrators of simulator training. face and con...

We report here the results of studies documenting the contamination of a cigarette-appearing smoking article labeled Eclipse with glass fibers, fragments, and particles. Eclipse, a product of the R. J. Reynolds Tobacco Company (RJR), was commercialized in June of 1996. Eclipse is unlike conventional cigarettes in that, like its predecessor Premier, it is designed to heat and not burn tobacco. T...