Surface combustion burners or radiant tile burners in comparison produce nitrogen oxides' levels 60-70% less. Therefore John Joyce's research into low NO x burners revolved primarily around surface combustion techniques. Another issue was the effect combustion temperatures have on the formation of NO x.
soup sandwich. A slang term used by members of the United States Army to describe a fellow soldier whose performance is unsatisfactory. This term is often shortened to just soup.. The term expresses a state of extreme uselessness, which can be understood by considering the functionality and worth of soup between two slices of bread.
A sandwich is simple to prepare with a variety of cold cuts, but the kinds you choose can make or break the nutritional value of your lunch. Certain cold cuts contain large amounts of fat, but other varieties are low in fat and supply essential nutrients.ayer on a variety of vegetables such as romaine lettuce, tomatoes, red onions, cucumbers and bell pepper strips. Top the vegetables with a slice of low-fat cheddar or pepper jack cheese to add a healthy dose of calcium to your sandwich. Slice lean cold cuts into strips and add them to a tossed green salad.