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Time–scale dependent relations between Earth Observation based proxies of vegetation productivity 期刊论文
Geophysical Research Letters, 2021
作者:  Nora Linscheid;  Miguel D. Mahecha;  Anja Rammig;  Nuno Carvalhais;  Fabian Gans;  Jacob A. Nelson;  Sophia Walther;  Ulrich Weber;  Markus Reichstein
收藏  |  浏览/下载:27/0  |  提交时间:2021/11/23
Radiocarbon in marine methane reveals patchy impact of seeps on surface waters 期刊论文
Geophysical Research Letters, 2020
作者:  Dong Joo Joung;  Mihai Leonte;  David L. Valentine;  Katy Sparrow;  Thomas Weber;  John D. Kessler
收藏  |  浏览/下载:6/0  |  提交时间:2020/10/20
Ecosystem transpiration and evaporation: Insights from three water flux partitioning methods across FLUXNET sites 期刊论文
Global Change Biology, 2020
作者:  Jacob A. Nelson;  Oscar Pé;  rez‐;  Priego;  Sha Zhou;  Rafael Poyatos;  Yao Zhang;  Peter D. Blanken;  Teresa E. Gimeno;  Georg Wohlfahrt;  Ankur R. Desai;  Beniamino Gioli;  Jean‐;  Marc Limousin;  Damien Bonal;  Eugé;  nie Paul‐;  Limoges;  Russell L. Scott;  Andrej Varlagin;  Kathrin Fuchs;  Leonardo Montagnani;  Sebastian Wolf;  Nicolas Delpierre;  Daniel Berveiller;  Mana Gharun;  Luca Belelli Marchesini;  Damiano Gianelle;  Ladislav Š;  igut;  Ivan Mammarella;  Lukas Siebicke;  T. Andrew Black;  Alexander Knohl;  Lukas Hö;  rtnagl;  Vincenzo Magliulo;  Simon Besnard;  Ulrich Weber;  Nuno Carvalhais;  Mirco Migliavacca;  Markus Reichstein;  Martin Jung
收藏  |  浏览/下载:13/0  |  提交时间:2020/10/12
Variations in Night Side Magnetic Field Topology at Mars 期刊论文
Geophysical Research Letters, 2020
作者:  D. A. Brain;  T. Weber;  S. Xu;  D. L. Mitchell;  R. J. Lillis;  J. S. Halekas;  J. Espley;  B. M. Jakosky
收藏  |  浏览/下载:11/0  |  提交时间:2020/08/18
Southern Ocean carbon sink enhanced by sea-ice feedbacks at the Antarctic Cold Reversal 期刊论文
NATURE GEOSCIENCE, 2020, 13 (7) : 489-+
作者:  Fogwill, C. J.;  Turney, C. S. M.;  Menviel, L.;  Baker, A.;  Weber, M. E.;  Ellis, B.;  Thomas, Z. A.;  Golledge, N. R.;  Etheridge, D.;  Rubino, M.;  Thornton, D. P.;  van Ommen, T. D.;  Moy, A. D.;  Curran, M. A. J.;  Davies, S.;  Bird, M., I;  Munksgaard, N. C.;  Rootes, C. M.;  Millman, H.;  Vohra, J.;  Rivera, A.;  Mackintosh, A.;  Pike, J.;  Hall, I. R.;  Bagshaw, E. A.;  Rainsley, E.;  Bronk-Ramsey, C.;  Montenari, M.;  Cage, A. G.;  Harris, M. R. P.;  Jones, R.;  Power, A.;  Love, J.;  Young, J.;  Weyrich, L. S.;  Cooper, A.
收藏  |  浏览/下载:14/0  |  提交时间:2020/06/29
Global Measurements of Brown Carbon and Estimated Direct Radiative Effects 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Zeng, Linghan;  Zhang, Aoxing;  Wang, Yuhang;  Wagner, Nicholas L.;  Katich, Joseph M.;  Schwarz, Joshua P.;  Schill, Gregory P.;  Brock, Charles;  Froyd, Karl D.;  Murphy, Daniel M.;  Williamson, Christina J.;  Kupc, Agnieszka;  Scheuer, Eric;  Dibb, Jack;  Weber, Rodney J.
收藏  |  浏览/下载:14/0  |  提交时间:2020/06/22
aerosol  light absorption  brown carbon  radiation forcing  black carbon  biomass burning  
Nutrients and water availability constrain the seasonality of vegetation activity in a Mediterranean ecosystem 期刊论文
Global Change Biology, 2020
作者:  Yunpeng Luo;  Tarek El‐;  Madany;  Xuanlong Ma;  Richard Nair;  Martin Jung;  Ulrich Weber;  Gianluca Filippa;  Solveig F. Bucher;  Gerardo Moreno;  Edoardo Cremonese;  Arnaud Carrara;  Rosario Gonzalez‐;  Cascon;  Yonatan Cá;  ceres Escudero;  Marta Galvagno;  Javier Pacheco‐;  Labrador;  M. Pilar Martí;  n;  Oscar Perez‐;  Priego;  Markus Reichstein;  Andrew D. Richardson;  Annette Menzel;  Christine Rö;  mermann;  Mirco Migliavacca
收藏  |  浏览/下载:14/0  |  提交时间:2020/06/01
The seismicity of Mars 期刊论文
NATURE GEOSCIENCE, 2020, 13 (3) : 205-+
作者:  Giardini, D.;  Lognonne, P.;  Banerdt, W. B.;  Pike, W. T.;  Christensen, U.;  Ceylan, S.;  Clinton, J. F.;  van Driel, M.;  Staehler, S. C.;  Boese, M.;  Garcia, R. F.;  Khan, A.;  Panning, M.;  Perrin, C.;  Banfield, D.;  Beucler, E.;  Charalambous, C.;  Euchner, F.;  Horleston, A.;  Jacob, A.;  Kawamura, T.;  Kedar, S.;  Mainsant, G.;  Scholz, J. -R.;  Smrekar, S. E.;  Spiga, A.;  Agard, C.;  Antonangeli, D.;  Barkaoui, S.;  Barrett, E.;  Combes, P.;  Conejero, V.;  Daubar, I.;  Drilleau, M.;  Ferrier, C.;  Gabsi, T.;  Gudkova, T.;  Hurst, K.;  Karakostas, F.;  King, S.;  Knapmeyer, M.;  Knapmeyer-Endrun, B.;  Llorca-Cejudo, R.;  Lucas, A.;  Luno, L.;  Margerin, L.;  McClean, J. B.;  Mimoun, D.;  Murdoch, N.;  Nimmo, F.;  Nonon, M.;  Pardo, C.;  Rivoldini, A.;  Manfredi, J. A. Rodriguez;  Samuel, H.;  Schimmel, M.;  Stott, A. E.;  Stutzmann, E.;  Teanby, N.;  Warren, T.;  Weber, R. C.;  Wieczorek, M.;  Yana, C.
收藏  |  浏览/下载:11/0  |  提交时间:2020/05/13
Constraints on the shallow elastic and anelastic structure of Mars from InSight seismic data 期刊论文
NATURE GEOSCIENCE, 2020, 13 (3) : 213-+
作者:  Lognonne, P.;  Banerdt, W. B.;  Pike, W. T.;  Giardini, D.;  Christensen, U.;  Garcia, R. F.;  Kawamura, T.;  Kedar, S.;  Knapmeyer-Endrun, B.;  Margerin, L.;  Nimmo, F.;  Panning, M.;  Tauzin, B.;  Scholz, J. -R.;  Antonangeli, D.;  Barkaoui, S.;  Beucler, E.;  Bissig, F.;  Brinkman, N.;  Calvet, M.;  Ceylan, S.;  Charalambous, C.;  Davis, P.;  Van Driel, M.;  Drilleau, M.;  Fayon, L.;  Joshi, R.;  Kenda, B.;  Khan, A.;  Knapmeyer, M.;  Lekic, V.;  McClean, J.;  Mimoun, D.;  Murdoch, N.;  Pan, L.;  Perrin, C.;  Pinot, B.;  Pou, L.;  Menina, S.;  Rodriguez, S.;  Schmelzbach, C.;  Schmerr, N.;  Sollberger, D.;  Spiga, A.;  Staehler, S.;  Stott, A.;  Stutzmann, E.;  Tharimena, S.;  Widmer-Schnidrig, R.;  Andersson, F.;  Ansan, V.;  Beghein, C.;  Boese, M.;  Bozdag, E.;  Clinton, J.;  Daubar, I.;  Delage, P.;  Fuji, N.;  Golombek, M.;  Grott, M.;  Horleston, A.;  Hurst, K.;  Irving, J.;  Jacob, A.;  Knollenberg, J.;  Krasner, S.;  Krause, C.;  Lorenz, R.;  Michaut, C.;  Myhill, R.;  Nissen-Meyer, T.;  Ten Pierick, J.;  Plesa, A. -C.;  Quantin-Nataf, C.;  Robertsson, J.;  Rochas, L.;  Schimmel, M.;  Smrekar, S.;  Spohn, T.;  Teanby, N.;  Tromp, J.;  Vallade, J.;  Verdier, N.;  Vrettos, C.;  Weber, R.;  Banfield, D.;  Barrett, E.;  Bierwirth, M.;  Calcutt, S.;  Compaire, N.;  Johnson, C. L.;  Mance, D.;  Euchner, F.;  Kerjean, L.;  Mainsant, G.;  Mocquet, A.;  Rodriguez Manfredi, J. A.;  Pont, G.;  Laudet, P.;  Nebut, T.;  De Raucourt, S.;  Robert, O.;  Russell, C. T.;  Sylvestre-Baron, A.;  Tillier, S.;  Warren, T.;  Wieczorek, M.;  Yana, C.;  Zweifel, P.
收藏  |  浏览/下载:20/0  |  提交时间:2020/05/13
Synthesis of rare sugar isomers through site-selective epimerization 期刊论文
NATURE, 2020: 403-+
作者:  Jackson, Hartland W.;  Fischer, Jana R.;  Zanotelli, Vito R. T.;  Ali, H. Raza;  Mechera, Robert;  Soysal, Savas D.;  Moch, Holger;  Muenst, Simone;  Varga, Zsuzsanna;  Weber, Walter P.;  Bodenmiller, Bernd
收藏  |  浏览/下载:15/0  |  提交时间:2020/07/03

Glycans have diverse physiological functions, ranging from energy storage and structural integrity to cell signalling and the regulation of intracellular processes(1). Although biomass-derived carbohydrates (such as d-glucose, d-xylose and d-galactose) are extracted on commercial scales, and serve as renewable chemical feedstocks and building blocks(2,3), there are hundreds of distinct monosaccharides that typically cannot be isolated from their natural sources and must instead be prepared through multistep chemical or enzymatic syntheses(4,5). These '  rare'  sugars feature prominently in bioactive natural products and pharmaceuticals, including antiviral, antibacterial, anticancer and cardiac drugs(6,7). Here we report the preparation of rare sugar isomers directly from biomass carbohydrates through site-selective epimerization reactions. Mechanistic studies establish that these reactions proceed under kinetic control, through sequential steps of hydrogen-atom abstraction and hydrogen-atom donation mediated by two distinct catalysts. This synthetic strategy provides concise and potentially extensive access to this valuable class of natural compounds.


Various rare sugars that cannot be isolated from natural sources are synthesized using light-driven epimerization, a process which may find application in other synthetic scenarios.