Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Michael Wohlfarth"'
Publikováno v:
Journal of Information Technology. :026839622211143
Recent high-profile antitrust cases and policy proposals have put a spotlight on the relationship between firms’ access to big data and sustained competitive advantages in digital markets. In Europe, concerns about data-driven market power have led
Publikováno v:
Management Science. 65:1678-1699
Social logins, such as “Log in with Facebook,” improve a website’s user experience and therefore enjoy great popularity among content providers (CPs) and users alike. Moreover, they also enable the social network and the CPs to share data, whic
Autor:
Michael Wohlfarth
Publikováno v:
Business & Information Systems Engineering. 61:551-574
Data portability allows users to transfer data between competing online services. As data gets increasingly valuable for online services and users alike, the enforcement of data portability within the European Union by the General Data Protection Reg
Autor:
Louisa Specht-Riemenschneider, Nikola Werry, Susanne Werry, Simon Apel, Malte Beyer-Katzenberger, Margarita Bidler, Linda Bienemann, Micha Brechtel, Lothar Determann, Tobias Dienlin, Martin Ebers, Jochen Eimer, Jörn Erbguth, Victoria Fast, Lava Gaff, Anne Britta Haas, Anton Haberl, Anka Hakert, Anke Hofmann, Michael Intveen, Wolfgang Kerber, Karsten Krupna, Franz Lehner, Dimitrios Linardatos, Sebastian Louven, Marina Lutz, Jan Henrik Pesek, Alisa Rank-Haedler, Charlotte Röttgen, Gunnar Sachs, Bernd Schmidt, Daniel Schnurr, Kay Schröder, Jan H. Schumann, Tobias Steudner, Lorenz Volbers, Thomas Widjaja, Michael Wohlfarth, Ling Yu
Was ist Datenrecht? Internet der Dinge, Big Data, Künstliche Intelligenz, Blockchain, Clouds, internationale Datentransfers: Der rechtliche Umgang mit Daten im digitalen Zeitalter zählt zu den facettenreichsten Herausforderungen unserer Generation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81ed40d2ce14362a1dd6ef5f55219f83
https://doi.org/10.37307/b.978-3-503-18783-6
https://doi.org/10.37307/b.978-3-503-18783-6
Autor:
Michael Wohlfarth, Jan Krämer
Publikováno v:
Telecommunications Policy. 42:154-171
The increased economic importance of digital services has profoundly changed the power structure in telecommunications and media markets. Although these services sometimes directly compete with traditional telecommunications services, the regulatory
Autor:
Heiko Rischer, Reto Brun, Michael Wohlfarth, Hélène Kopff, Harald Meimberg, Günther Heubl, Gerhard Bringmann, Michael Dreyer, Hamid A. Hadi
Publikováno v:
Bringmann, G, Dreyer, M, Kopff, H, Rischer, H, Wohlfarth, M, Hadi, H, Brun, R, Meimberg, H & Heubl, G 2005, ' ent-dioncophylleine A and related dehydrogenated naphthylisoquinoline alkaloids, the first Asian dioncophyllaceae-type alkaloids, from the “new” plant species Ancistrocladus benomensis ', Journal of Natural Products, vol. 68, no. 5, pp. 686-690 . https://doi.org/10.1021/np049626j
Three new fully dehydrogenated naphthylisoquinoline alkaloids, the 7,1‘-coupled ent-dioncophylleine A (3a), the likewise 7,1‘-coupled 5‘-O-demethyl-ent-dioncophylleine A (4), and the 7,8‘-linked dioncophylleine D (5), have been isolated from
Publikováno v:
Bringmann, G, Wohlfarth, M, Rischer, H, Schlauer, J & Brun, R 2002, ' Extract screening by HPLC coupled to MS-MS, NMR, and CD : A dimeric and three monomeric naphthylisoquinoline alkaloids from Ancistrocladus griffithii ', Phytochemistry, vol. 61, no. 2, pp. 195-204 . https://doi.org/10.1016/S0031-9422(02)00217-0
Three new monomeric naphthylisoquinoline alkaloids, ancistrogriffines A, B, and C, and the first dimer of a 7,8′-coupled naphthylisoquinoline, ancistrogriffithine A, have been detected by phytochemical online screening of plant extracts of Ancistro
Autor:
Gerhard Bringmann, Stefanie Diem, Markus Heubes, Markus Herderich, Jan Schlauer, Michael Wohlfarth, Wael Saeb, Heiko Rischer
Publikováno v:
Bringmann, G, Wohlfarth, M, Rischer, H, Heubes, M, Saeb, W, Diem, S, Herderich, M & Schlauer, J 2001, ' A photometric screening method for dimeric naphthylisoquinoline alkaloids and complete
structural eludication of a dimer in crude plant extracts, by the LC−MS/LC−NMR/LC−CD Triad ', Analytical Chemistry, vol. 73, no. 11, pp. 2571-2577 . https://doi.org/10.1021/ac001503q
structural eludication of a dimer in crude plant extracts, by the LC−MS/LC−NMR/LC−CD Triad ', Analytical Chemistry, vol. 73, no. 11, pp. 2571-2577 . https://doi.org/10.1021/ac001503q
An efficient evaluation procedure for the chemical screening and on-line structural elucidation of dimeric naphthylisoquinoline alkaloids has been developed. The method is based on the lead tetraacetate oxidation of the central binaphthalene core of
Publikováno v:
Tetrahedron. 56:5871-5875
The synthesis of jozipeltine A (5), the 6′-coupled constitutionally symmetric dimer of the highly antimalarial naphthylisoquinoline alkaloid dioncopeltine A (4), is described. After selective protection of two of the four OH- and NH-functionalities
Revised Structure of Antidesmone, an Unusual Alkaloid from Tropical Antidesma Plants (Euphorbiaceae)
Autor:
Gerhard Bringmann, Andrea Porzel, Michael Wohlfarth, Heiko Rischer, Jürgen Schmidt, Jan Schlauer, Günter Adam, Alexander Buske, Jörg Mühlbacher
Publikováno v:
Bringmann, G, Schlauer, J, Rischer, H, Wohlfarth, M, Mühlbacher, J, Buske, A, Porzel, A, Schmidt, J & Adam, G 2000, ' Revised structure of antidesmone, an unusual alkaloid from tropical Antidesma plants (Euphorbiaceae) ', Tetrahedron, vol. 56, no. 23, pp. 3691-3695 . https://doi.org/10.1016/S0040-4020(00)00289-1
The structure of antidesmone, an alkaloid from Antidesma membranaceum Müll. Arg. and A. venosum E. Mey. (Euphorbiaceae), was revised to be (S)-4,8-dioxo-3-methoxy-2-methyl-5-n-octyl-1,4,5,6,7,8-hexahydroquinoline [(S)-2], not the isoquinoline deriva