of organic chemicals. An example of each of these processes is given in Figure 2. One process is cracking. Incatalyticcracking, as the name implies, petroleum fractions of higher molecular weight than gasoline can be heated with acatalystand cracked into smaller molecules. This material can then...
One rainy afternoon Betty 【1】 (seat)on the stairs of a temple in Nepal, before which lay a muddy square. People had to walk on 【2】 artificial path made by a line of bricks 【3】 (get) to the other side. A friend of 【4】 complained all the way while 【5】 (step)on the...
“We shouldn’t be in the business of doing successive DPAs [deferred prosecution agreements] or NPAs [nonprosecution agreements] one after the other after the other,” said Marshall Miller, principal associate deputy attorney general at the Justice Department, speaking at the American Bar ...
Aluminumis one of the few metals that is made stronger through the oxidation process. Oxidation is the process that causes rusting, so for most other metals this is a cause of deterioration. So, what is anodized metal? It is the strengthening process aluminum goes through is called anodizing,...
Alkane molecules are rather unreactive (except for being very flammable), but alkenes react with many other substances. When a drop of bromine is added to an alkene, for example, the deep orange color of the bromine immediately disappears as the bromine adds across the double bond to form a...
The result is too often the familiar “law of unintended consequences.” What’s gained in one area is lost elsewhere as the result of other unanticipated interactions. For example, adding more efficient active energy systems tends to reduce the amount of energy used, and therefore lowers its ...
19.A system according to claim 13, wherein the one or more hydrogen selective membrane(s) comprise(s) a metal alloy selected from the group consisting of palladium alloys and lead alloys on a support selected from porous asymmetrical supports comprising an intermetallic barrier, and porous ceramic...
Currently biological denitration technology is still at the initial stage of research. On the one hand, there are difficulties in the denitration microorganism cultivation and industrial application; on the other hand, NO is the major constituent of NOx in flue gas and is basically insoluble in...