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Per Halfdan Nielsen

Per Halfdan Nielsen

D-Index & Metrics

Chemistry

D-Index
44
Citations
8204
World Ranking
16742
National Ranking
135

Overview

Per Halfdan Nielsen is affiliated with the University of Copenhagen in Denmark. Their academic profile primarily centers on their association with this institution, without further public documentation of their specific research outputs or thematic focus areas.

The available information does not list any recent papers, co-authors, or specific publication venues linked to their research activities. Consequently, there is no data to detail collaborations, frequent journals, or conference participation associated with their work.

No book publications have been identified or attributed to Per Halfdan Nielsen, indicating either a focus on other types of scholarly contributions or an absence of publicly available records for such works.

Similarly, their research fields, subfields, and main topics of study are not enumerated in the records. This lack of detail precludes a comprehensive summary of their scientific interests or domain-specific expertise.

There are no recorded awards or distinctions associated with their name, which suggests either that they have not received major recognized accolades or that such information has not been documented for public reference.

Overall, Per Halfdan Nielsen's documented academic footprint is primarily defined by their institutional affiliation, with minimal disclosed details on their research output or specific scientific contributions at this time.

Best Publications

  • Infrared Spectra of Thioamides and Selenoamides.

    Kai Arne Jensen;Per Halfdan Nielsen;Lars Gunnar Sillén;E. Kulonen

  • Synthesis and Isoelectric Fractionation of Carrier Ampholytes.

    Olof Vesterberg;Charles Larsen;Per Halfdan Nielsen

  • Chapter Two - Naturally Occurring Cyclotryptophans and Cyclotryptamines

    Uffe Anthoni;Carsten Christophersen;Per Halfdan Nielsen

  • A Calorimetric Determination of the Enthalpy of Ionization of Water and the Enthalpy of Protonation of THAM at 5, 20, 25, 35, and 50 Degrees C.

    Ingmar Grenthe;Heikki Ots;Olle Ginstrup;Per Halfdan Nielsen

  • Heats of Ionization of Some Alkylammonium and Hydroxyalkylammonium Compounds.

    G. Öjelund;I. Wadsö;Berit Olofsson;Per Halfdan Nielsen

  • Mass Spectrometry of Terpenes. II. Monoterpene Alcohols.

    Erik von Sydow;Olof Samuelson;A. Holm;P. H. Nielsen

  • Albaflavenone, a sesquiterpene ketone with a zizaene skeleton produced by a streptomycete with a new rope morphology.

    Hanne Gürtler;Rita Pedersen;Uffe Anthoni;Carsten Christophersen

  • Structure of red and orange fluorescein

    Uffe Anthoni;Carsten Christophersen;Per H. Nielsen;Ask Püschl

  • Marine alkaloids, 15. Two alkaloids, flustramine E and debromoflustramine B, from the marine bryozoan Flustra foliacea.

    Pia B. Holst;Uffe Anthoni;Carsten Christophersen;Per H. Nielsen

  • Studies on the Kolbe Electrolytic Synthesis. IV. A Theoretical Investigation of the Mechanism by Standard Potential Calculations.

    Lennart Eberson;Per Halfdan Nielsen;Sven Furberg;Cherry Schiander Petersen

  • Infrared Spectra of Some Organic Compounds of Group V B Elements.

    Kai Arne Jensen;Per Halfdan Nielsen;Sven Furberg;Cherry Schiander Petersen

  • Marine alkaloids. 12. Chartellines, halogenated .beta.-lactam alkaloids from the marine bryozoan Chartella papyracea

    Uffe Anthoni;Lionel Chevolot;Charles Larsen;Per H. Nielsen

  • Acid Degradation of Lignin. II. Separation and Identification of Low Molecular Weight Phenols.

    Knut Lundquist;Tomas Sydberger;Jannik Bjerrum;Per Halfdan Nielsen

  • Crystal Structure of Cyclotetrasarcosyl.

    P. Groth;Owe Rönnquist;Jon Aarskog;Per Halfdan Nielsen

  • Seasonal variation and distribution of two phenolic compounds, rosmarinic acid and caffeic acid, in leaves and roots-rhizomes of eelgrass (Zostera Marina L.)

    Helle Ravn;Morten F. Pedersen;Jens Borum;Claude Andary

  • The Single and Double Bonds between sp2-Hybridized Carbon Atoms, as Studied by the Gas Electron Diffraction Method. III. The Molecular Structure of 1,3,5-cis-Hexatriene.

    Marit Trætteberg;S. J. Cyvin;Berit Olofsson;Per Halfdan Nielsen

  • The Crystal Structure of [(UO2)2(OH)2Cl2(H2O)4].

    Märtha Åberg;Leif Nilson;Charles Larsen;Per Halfdan Nielsen

  • Antibacterial activity of marine-derived fungi.

    Carsten Christophersen;Oscar Crescente;Jens Christian Frisvad;Lone Gram

  • Redetermined Crystal Structures of PdAs2, PdSb2, PtP2, PtAs2, PtSb2, alpha-PtBi2, and AuSb2.

    Sigrid Furuseth;Kari Selte;Arne Kjekshus;P. H. Nielsen

  • The Properties and Structures of Aqueous Sodium Caprylate Solutions. II. The Viscosities of Sodium Caprylate Solutions at 20 degrees C Measured with Capillary Viscometers.

    Per Ekwall;Pär Holmberg;G. Elisson;P. H. Nielsen

  • Quaternary ammonium compounds in the biosphere—An example of a versatile adaptive strategy

    U. Anthoni;C. Christophersen;L. Hougaard;P.H. Nielsen

Frequent Co-Authors

Carsten Christophersen
Carsten Christophersen University of Copenhagen
Alf A. Lindberg
Alf A. Lindberg Karolinska Institute
Nils Andreas Sörensen
Nils Andreas Sörensen Norwegian University of Science and Technology
Svend Erik Rasmussen
Svend Erik Rasmussen Aarhus University
Jorunn Sletten
Jorunn Sletten University of Bergen
Michael Gajhede
Michael Gajhede University of Copenhagen
Lone Gram
Lone Gram Technical University of Denmark
Jan Almlöf
Jan Almlöf University of Minnesota
Kurt V. Mikkelsen
Kurt V. Mikkelsen University of Copenhagen
Bent O. Petersen
Bent O. Petersen University of Copenhagen

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