Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Helmut Gottwald"'
Publikováno v:
Annals of Botany. Vol. 86 Issue 2, p421-432. 12p.
Publikováno v:
Annals of Botany. 86:421-432
The Late Cretaceous and early Tertiary sediments from the northern Peninsula region of Antarctica yield a rich assemblage of fossil wood with well preserved anatomy. Wood specimens of a previously recognized morphotype are described. The woods are ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69cea8904a8e4eafff077e30deccc703
https://doi.org/10.1006/anbo.2000.1208
https://doi.org/10.1006/anbo.2000.1208
Autor:
Helmut Gottwald, Imogen Poole
Publikováno v:
Australian Systematic Botany. 14:207
Palaeofloristic studies of the Antarctic Peninsula region are important in furthering our understanding of (i) the radiation and rise to ecological dominance of the angiosperms in the Southern Hemisphere during the Late Cretaceous and (ii) the presen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45914cf37eb497c97609b4b0a3ca6982
https://doi.org/10.1071/sb00022
https://doi.org/10.1071/sb00022
Autor:
Hubert Willeitner, Helmut Gottwald
Publikováno v:
Holz als Roh- und Werkstoff. 34:433-438
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e424e4065ab3db6f124deef868e4bdd
https://doi.org/10.1007/bf02608011
https://doi.org/10.1007/bf02608011
Autor:
Helmut Gottwald
Publikováno v:
IAWA Journal. 4:161-178
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8f93a03745efdd56120a0e02ec235a2
https://doi.org/10.1163/22941932-90000409
https://doi.org/10.1163/22941932-90000409
Autor:
Konrad G. Weil, Helmut Gottwald
Publikováno v:
Berichte der Bunsengesellschaft für physikalische Chemie. 92:60-64
Films of about 200 nm thickness were prepared by vacuum deposition of the halides onto fused silica windows, which were kept at 12 K by a closed cycle helium refrigerator. AgCl, CuCl, and TlCl films showed an structureless absorption edge which exten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0d80da5315ccc8661e3699fe69126f0
https://doi.org/10.1002/bbpc.198800012
https://doi.org/10.1002/bbpc.198800012
Publikováno v:
Zeitschrift für Naturforschung A. 40:677-682
When vapor of silver chloride is condensed with rates below 1 nm · min-1 onto a substrate at T= 10 K, a non-crystalline film grows. Typical of this film is the absence of the exciton absorption at 240 nm and the presence of a broad absorption extend
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ede6eed16640b7e3a1df178c673166e7
https://doi.org/10.1515/zna-1985-0704
https://doi.org/10.1515/zna-1985-0704
Autor:
Helmut Gottwald
Publikováno v:
IAWA Journal. 1:55-58
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce278c05b6b79014a5b1116d31f1a77e
https://doi.org/10.1163/22941932-90000805
https://doi.org/10.1163/22941932-90000805
Autor:
Helmut Gottwald, Konrad G. Weil
Publikováno v:
Zeitschrift für Naturforschung A. 43:481-484
We report on Raman spectroscopic investigations with cold condensed films of silver chloride, thallium chloride, and sodium chloride in the absence and in the presence of cocondensed metal. With films of 1000 nm -2000 nm thickness, Raman signals only
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b521eb4e5559e497225d9e27743d8568
https://doi.org/10.1515/zna-1988-0513
https://doi.org/10.1515/zna-1988-0513
Autor:
Helmut Gottwald
Publikováno v:
Holzforschung. 27:48-51
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3feb1ea81b5b170617f9b4d5ee5298a
https://doi.org/10.1515/hfsg.1973.27.2.48
https://doi.org/10.1515/hfsg.1973.27.2.48