Results 131 to 140 of about 84,526 (262)

Examining the Impact of Row Planting on Labor Use for Sustainable Food Production Among Maize Farmers in Rural Ghana

Agribusiness, EarlyView.
ABSTRACT Smallholder farmers are reverting to traditional production methods due to the high opportunity costs and unintended consequences of new technologies. This study focuses on row planting technology, which is labor‐intensive and slow without mechanized operations.
Emmanuel Tetteh Jumpah, Habtamu Alem, Abdulai Adams, Tomáš Ratinger, Miroslava Bavorová   +4 more
wiley   +1 more source

Visible‐Light Sensitized Isomerization in the Lipid Bilayer Enables Activation of a Transmembrane Transporter

Angewandte Chemie, EarlyView.
A stiff‐stilbene‐based transmembrane anion transporter is isomerized by energy transfer from a ruthenium tris(bipyridyl) photosensitizer in the lipid bilayer. This sensitized isomerization allows activation of chloride transport using visible instead of UV light, without the need to chemically modify the stiff‐stilbene photoswitch.
Julia Villalva, Abhishek Mondal, Willem Marulanda, Jasper E. Bos, Sylvestre Bonnet, Anjali Pandit, Sander J. Wezenberg   +6 more
wiley   +2 more sources

Light distribution on citrus canopy affects physiological parameters and fruiting pattern [PDF]

, 1992
Light interception by the orange tree canopy during flower bud differentiation and subsequent flowering and fruit setting has been monitored by continuous data recording from 48 silicon cells distributed in different canopy zones.
Benincasa, Fabrizio, Canu, Annalisa, Deidda, Pietro, Farro, Laura, Filigheddu, Maria Rosaria   +4 more
core  

Evaluating the African arid corridor hypothesis: A meta‐analysis including the phylogenetic and biogeographical history of Sesamothamnus

American Journal of Botany, EarlyView.
Abstract Premise We examined the African arid corridor (AAC) disjunction pattern of vascular plants between northeastern and southwestern Africa in the context of geological and climatic events since the late Miocene. We developed a phylogenetic and biogeographical framework for the arid‐adapted genus Sesamothamnus (Pedaliaceae), a classic example of ...
John G. Zaborsky, Jeffrey P. Rose, Ricardo Kriebel, Bryan T. Drew, Emily Moriarty Lemmon, Alan R. Lemmon, Kenneth J. Sytsma   +6 more
wiley   +1 more source

Controlling Near‐Infrared Fluorescence‐to‐Phosphorescence Ratios and Triplet Lifetimes in Rhodium(I) Dimers via Primary and Secondary Coordination Sphere Effects

Angewandte Chemie, EarlyView.
RhI dimers with bridging aryl isocyanide and di‐phosphine ligands show NIR‐I or NIR‐II fluorescence/phosphorescence, depending on the ligands and conformational rigidity at the Rh2 core. Rh‐Rh interactions can be tuned by peripheral modification of the aryl isocyanide ligand, resulting in a rigid Rh2 core and improved photophysical properties ...
Vanitha R. Naina, Giacomo Morselli, Alessandro Prescimone, Daniel Häussinger, Oliver S. Wenger   +4 more
wiley   +2 more sources

Ultraviolet radiation shapes seaweed communities [PDF]

, 2006
A Flores-Moya, A Flores-Moya, A Flores-Moya, A Holzinger, A Long, A McMinn, A Post, A Strid, AE McNamara, AH Teramura, AK Swanson, AK Swanson, ARO Chapman, AWD Larkum, B Cordi, B Worm, BB Jordan, BE Henry, BM Greenberg, C Wiencke, C Wiencke, C Wiencke, C Wiencke, C Wiencke, CD Amsler, CD Amsler, Christian Wiencke, D Campbell, D Hanelt, D Hanelt, D Hanelt, D Hanelt, D Hanelt, D Hanelt, D Hanelt, D Karentz, D Karentz, D Karentz, D Krause-Jensen, DC Reed, DG Müller, Dieter Hanelt, DJ Allen, DJ Lary, DL Mitchell, DM DeNicola, DP Häder, E Bañares, EC Henry, EC Macaya, EE Sotka, EM Aro, EM Borell, ER Scharf, F Poppe, F Poppe, FR Conde, G Cronin, G Cronin, G Diaz-Pulido, G Döhler, G Döhler, G Kräbs, G Renger, H Cyr, H Klöser, H Lippert, H Pavia, H Pavia, H Pavia, H Svendsen, HK Lotze, HK Lotze, I Gómez, I Gómez, I Gómez, I Gómez, I Vass, IM Lamb, IM Yakovleva, IR Davison, Ivan Gómez, J Aguilera, J Aguilera, J Barber, J Ceh, J Langer, J Lubchenco, JC Farman, JE Duffy, JE Frederick, JF Bornman, JH Connell, JJ Vergara, JTO Kirk, K Bischof, K Bischof, K Bischof, K Bischof, K Bischof, K Bischof, K Bischof, K Bischof, K Bischof, K Hoyer, K Hoyer, K Lüning, K Zielinski, Kai Bischof, Katharina Zacher, KR Arrigo, LA Franklin, LO Björn, LV Evans, M Altamirano, M Altamirano, M Altamirano, M Altamirano, M Lorenz, M Maegawa, M Makarov, M Molis, M Molis, M Molis, M Schoembeck, M Tevini, M Thiel, M Wahl, M Wahl, M Wahl, MA Brezezinski, MA Ragan, MAE Schoenwaelder, Markus Molis, ME Hay, ME Hay, MEA Schoenwaelder, MEA Schoenwaelder, MEA Schoenwaelder, MEA Schoenwaelder, Michael Y. Roleda, MJ Dring, MJ Dring, ML Bothwell, MM Caldwell, MM Caldwell, MM Caldwell, MN Clayton, MP Lesser, MV Makarov, MY Roleda, MY Roleda, MY Roleda, MY Roleda, MY Roleda, MY Roleda, N Korbee, NG Jerlov, NGA Ekelund, O Holm-Hansen, P Huovinen, P Huovinen, PG Falkowski, PS Huovinen, R Karban, R Karban, R Lois, R Mepsted, R Santas, RB Taylor, RC Worrest, RD Vinebrooke, S Frederiksen, S Madronich, S Nogués, S Pang, S Strahle, SAH Mackerness, SM Coehlo, SP Dawson, SV Dobretsov, T Han, T Han, T Michler, T Okuda, TA Norton, TA Stephenson, TE DeLaca, TM Farrell, TM Murphy, TM Schmitt, U Johanson, U Karsten, U Karsten, U Karsten, U Karsten, Ulf Karsten, Ulrike Lüder, VA Fairhead, W Iwanzik, WC Dunlap, WF Vincent, WH Poll van de, WH Poll van de, WM Bandaranayake, WP Sousa, YS Han, Z Máté   +207 more
core   +1 more source

Boron‐Doping of a Macrocyclic Tetrafuran Framework Unveils an Expanded Porphyrinoid With Switchable (Anti)Aromaticity and Conformational Dynamics

Angewandte Chemie, EarlyView.
We disclose a novel boron macrocycle derived from the sustainable furan building block. The boraporphyrinoid exhibits a global antiaromatic ring current and dynamic conformational flexibility. Twofold reduction induces a switch to strong global aromaticity, accompanied by stiffening of the porphyrinoid backbone.
Lukas Swoboda, Jonas Klopf, Jonas Bachmann, Ivo Krummenacher, Holger Braunschweig, Bernd Engels, Holger Helten   +6 more
wiley   +2 more sources

An Artificial Molecular Pump Powered by Light

Angewandte Chemie, EarlyView.
A minimal rotaxane‐based supramolecular system functions as a light‐powered molecular pump, capturing macrocycles from solution and concentrating them within an intramolecular compartment. Repeated azobenzene photoisomerization modulates the binding and kinetic barriers of threading and shuttling, generating a photon‐driven energy ratchet that sustains
Federico Nicoli, Chiara Taticchi, Stefano Corra, Marina Tranfić Bakić, Massimo Baroncini, Serena Silvi, Jessica Groppi, Alberto Credi   +7 more
wiley   +2 more sources

Studies of molecular mechanisms integrating carbon metabolism and growth in plants [PDF]

, 2003
Plants use light energy, carbon dioxide and water to produce sugars and other carbohydrates, which serve as stored energy reserves and as building blocks for biosynthetic reactions.
Thelander, Mattias
core  

Oxidation State Determines Solvent Structure Around a Manganese–Vanadium Polyoxometalate Water‐Oxidation Catalyst

Angewandte Chemie, EarlyView.
Oxidation state controls microsolvation in the polyoxometalate {MnV}n−$\{{\rm MnV}\}^{n-}$ water‐oxidation catalyst in acetonitrile/water mixtures. The reduced species {MnV}3− attracts a highly structured hydration layer even at low water content, preferentially binding terminal V═O sites and excluding acetonitrile, while oxidized species show weaker ...
Simon Tippner, Moritz Remmers, Sebastian Mai, Boris Mashtakov, Mihail Mondeshki, Carsten Streb, Leticia González   +6 more
wiley   +2 more sources