3. Solvent use

Cement Trees, 1989.

Monitoring of solvents, precursors and essential chemicals and assessment

It is, however, soluble in organic solvents.

If we built a 20 story building out of cement and concrete, the process would result in the manufacturing of that cement and 1,200 tonnes of carbon dioxide.

Architecture is not based on concrete and steel and the elements of the soil.

And then you get down to the petroleum distillates, which are the solvents, hundreds of them.

There are pieces of cement along the trail of the explosion

We've got lots of people, pollution, cars, concrete, lots of concrete.

They built a concrete home, but the family kept the key to their house in Nazareth.

These coefficients are a measure of the difference in solubility of the compound in these two phases.

And what happens first is the solvents break into the oil, the lipid membrane, they let the surfactants in there.

The occupiers have decided to implement the Israeli style ghettos of imprisoning people in concrete walls.

It is miscible with virtually all solvents and is a weak base, as is typical for amines.

The activities in question are energy conversion (combustion and fugitive emissions of fuels), industrial processes, use of solvents, farming and wastes.

For a mixture of 4 1 cement to water, it could be said that the ratio of cement to water is 4 1, that there is 4 times as much cement as water, or that there is a quarter (1 4) as much water as cement..

Pyriform silk glands make the attachment cement that's the silk that's used to adhere silk lines to a substrate.

The first concrete blocks were manufactured in 1868 with a very simple idea modules made of cement of a fixed measurement that fit together.

In cities, pollen particles fall on concrete and asphalt rather than being absorbed by the soil.

So every time you see a concrete jungle like that, what you've got to do is find open spaces.

When this tissue is fixed and stained to be better viewed under a microscope, the lipid is usually dissolved by the solvents used to prepare the sample.

It was built entirely by hand off bamboo scaffolding, people carrying these baskets of concrete on their heads, dumping them in the forms.

It was a powerful cement derived from pozzolana, and soon supplanted marble as the chief Roman building material and allowed many daring architectural forms.

In order to accomplish this, the existing facade had to be demolished, the new area cemented, and the metallic structure covered in brick built, always with the same technique and look.

In the physical sciences, a partition coefficient (P) or distribution coefficient (D) is the ratio of concentrations of a compound in a mixture of two immiscible phases at equilibrium.

Grout is generally a mixture of water, cement, sand, often color tint, and sometimes fine gravel (if it is being used to fill the cores of concrete blocks).

Microplates can be stored at low temperatures for long periods, may be heated to increase the rate of solvent evaporation from their wells and can even be heat sealed with foil or clear film.

An Rf value will always be in the range 0 to 1 if the substance moves, it can only move in the direction of the solvent flow, and cannot move faster than the solvent.

Practice Various methods are used to achieve the level of oxygen depletion needed, such as a hanging, suffocation with a plastic bag over the head, self strangulation such as with a ligature, gas or volatile solvents, chest compression, or some combination of these.

Increasing span lengths increases the usable unencumbered floorspace in buildings diminishing the number of joints leads to lower maintenance costs over the design life of a building, since joints are the major focus of weakness in concrete buildings.

Pressure sensitive tape, known also in various countries as PSA tape, adhesive tape, self stick tape, sticky tape, or just tape, is an adhesive tape that will stick with application pressure, without the need for solvent, heat, or water for activation.

Iraq, for instance, is now plunged in darkness after it had built a nuclear reactor in the 80s. They are now using a local invention and have returned to building homes out of gypsum instead of cement so that they could adapt to their environment.