1) The engineer making that experiment took a lot of measurements. 2) The scientist chooses between several procedures mentioned above. 3) We give the results of the made calculations in decimals. 4) The scientist theoretically predicted complicated interaction between the components involved in the process. 5) The original idea of a discovery is often the product of one man working in a group environment. 6) The method applied increased the accuracy of the results. 7) The approach designed by the group of engineers is very nearly the same as that introduced in the thirties. 8) After a heated discussion the laboratory applied the method improved by Dr. N. 9) The procedure proposed provided the required mechanism of reaction. 10) The text includes fragments of the opinions concerning the subject under discussion. 11) At that time the problem presented increased danger of radioactive contamination and encountered opposition at most laboratories. 12) The results obtained disagreed with earlier data reported by Dr. D. 13) The hypothesis concerned synthesized materials and did not apply to natural products. 14) The discovery came at the very time when most researchers engaged in the work were about to give it up. 15) Such studies require very detailed information concerning the processes at work.