Nielsen

N.Nielsen, P-scan system for ultrasonic weld inspection . The Danish Welding Institute, 1980. 

S.A. Nielsen, J.T. Rheinlander, K.K. Borum, H.E. Gundtoft - Riso National Laboratory, Denmark. 

Nielsen, S.A. and Bj0rn0, L. (1997). Bistatic circular array imaging with gated ultrasonic signals. Acoustical Imaging, Vol. 23 (In press). 

Nielsen, S.A. Borum, K.K. and Gundtoft, H.E (1995). Verifying an ultrasonic reconstruction algorithm for non-destructive tomography. Proc. of 1st World Congress on Ultrasonics, Berlin, Vol. 1, 446-450. 

Gundtoft, H. E., Agerup, C. C. and Nielsen, T. A New Ultrasonic Inspection System for Non-destructive Examination of Precision Tubes", NDT International August 1977,... 

T. Sevel, NH. Pedersen, C.E. Weinell, B. Lind-Nielsen, North Sea Flow Measurements Workshop, 1996, Peebles, Scotland... 

McTague J P, Nielsen M and Passell L 1979 Neutron scattering by adsorbed monolayers Crit. Rev. Solid State Sc/8 125-56... 

Aldol additions and ester condensations have always been and still are the most popular reactions for the formation of carbon-carbon bonds (A.T. Nielsen, 1968). The earbonyl group acts as an a -synthon, the enoi or enolate as a d -synthon. Both reactions will be treated together here, and arguments, which are given for aldol additions, are also valid for ester condensations. Many famous name reactions belong to this category ). The products of aldol additions may be either /J-hydroxy carbonyl compounds or, after dehydration, or, -unsaturated carbonyl compounds. 

J. R. Rostmp-Nielsen, Steam Reforming Catalysts Teknisk Fodag A/S, Copenhagen, 1975. 

D. M. Nielsen, ed.. Practical Handbook of Ground-Water Monitoring, Lewis Pubhshers, Inc., Chelsea, Mich., 1991. 

A. Nielsen, M Investigation on Promoted Iron Catalysts for the Synthesis ofAmmonia,] A. GjeUemps Eodag, Copenhagen, Denmark, 1968, p. 12. 

L. E. Nielsen, Mechanical Properties of Polymers and Composites, Vol. 1, Marcel Dekker, New York, 1974. 

---