smoke 2 case study

Jun 21st, 2015
Studypool Tutor
Alfred University
Price: $30 USD

Tutor description

Smoking is a risk factor of a number of oral diseases; the extent to which tobacco products influence dental aesthetics has not been widely investigated. The aim of this study was to determine satisfaction with own tooth colour of smokers and non-smokers and to investigate whether smokers have higher levels of self-assessed tooth discolouration compared to non-smokers

Word Count: 6301
Showing Page: 1/19
Engineering Contractors in the Chemical Industry. The Development of Ammonia Processes, 1910-1940.In 1924, Bruno Waeser, a German observer of the chemical industry, remarked: "Im Vergleich zu dem, was die Stickstoffindustrie heute darstellt, war sie 1913/14 noch ein recht kmmerliches Pflnzchen!"1 Indeed, the nitrogen fertiliser industry grew tremendously in these years. BASF's development of an ammonia synthesis process was a crucial innovation that made this growth possible. Ammonia, a chemical compound of nitrogen and hydrogen, is the crucial intermediate for the production of nitrogen fertilisers. BASF's successful development of a large scale ammonia synthesis process opened up an entirely new technological field and had a far-reaching commercial impact on the company. It is one of the most important innovations of the twentieth-century chemical industry. In 1924, when Waeser made his remarks, several other companies besides BASF had developed ammonia processes. Some of these firms were engineering contractors, companies that specialised in the engineering and construction of chemical plants. These contractors built many plants and the nitrogen fertiliser industry took off.The development of BASF's ammonia process is one of the best documented innovation successes of the chemical industry.2 Surprisingly little has been written on the processes that were developed in the wake of this breakthrough however. Sometimes these alternative technologies are characteri

Review from student

Studypool Student
" AMAZING as always! "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1820 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors