Sentences with phrase «of uranium dioxide»

After testing many alternatives, the chemists found an organic molecule that clamps down — like Pac - Man — on one of uranium dioxide's oxygen atoms.

At left (a) is the uranium rod (in red) with a mixture of uranium dioxide and uranium hydride growing on the surface (yellow and orange).

The fuel rods in most cases consist of uranium dioxide pellets encased in zirconium alloy tubes or cladding.

Not exact matches

Radioactive uranium in the form of UO (2)(2 +) was trapped directly by the silicon dioxide support.

Ourrespiratory agent is oxygen, a by - product of plant photosynthesis.Oxygen is rare below ground, and microbiologists have found subsurfaceorganisms that breathe an astounding variety of alternatives: ferriciron, sulfate, nitrate, nitrite, uranium, and carbon dioxide.

The gas - phase results are consistent with the spontaneous hydrolysis of PaO2 + in aqueous solution, this in contrast to heavier actinide dioxides of uranium, neptunium, and plutonium; the heavier actinide dioxides form stable hydrates in both solution and gas phase.

This behavior reveals that different chemistry occurs when a water molecule is added to protactinium versus the heavier actinide dioxide cations of uranium, neptunium, and plutonium.

«We've now proven that it is possible to distinguish between uranium dioxide and uranium hydroxide, and to resolve the size and shape of the materials inside the package with phenomenal precision,» Scott said.

Like older models, they will use uranium fission to heat water and drive a turbine, but these reactors will be smaller, simpler to build, and each will add more than 1100 megawatts of capacity to the region's power grid when they come online in 2016 or 2017 — without emitting carbon dioxide.

The potassium - atom mouth of an organic molecule grabs one of the oxygen atoms (red) in uranium dioxide.

The end result is the production of carbon dioxide gas and a layer of uranium coating the cathode (22).

In addition, a relatively small amount of uranium can produce a relatively large amount of energy, helping the overall energy cycle of an online nuclear plant to release no more carbon dioxide per kilowatt - hour than solar power, which must account for the manufacturing of photovoltaic cells.

Opponents of nuclear power have started a counteroffensive to Dr. Lovelock's call for a new nuclear age, arguing that mining uranium and building nuclear plants releases huge amounts of carbon dioxide, and that the danger from accidents or terrorism is too great.