Results 41 to 50 of about 150,649 (280)

La construction de la valeur économique d’une revue en chimie

Revue Française des Sciences de l’Information et de la Communication, 2017
Dans le domaine de la chimie, la facturation de l’article à l’auteur est devenue depuis quelques années la modalité principale d’open access. Le montant des frais (appelés Article Processing Charges ou APC) varie de quelques centaines à quelques milliers
Marianne Noel
doaj   +1 more source

Coagulative Granular Hydrogels with an Enzyme Catalyzed Fibrin Network for Endogenous Tissue Regeneration

Advanced Healthcare Materials, EarlyView.
Coagulative granular hydrogels are composed of packed thrombin‐functionalized microgels that catalyze the conversion of fibrinogen into a secondary fibrin network, filling the interstitial voids. This bio‐inspired approach stabilizes the biomaterial to match the robustness of bulk hydrogels without compromising injectability, mimicking the initial ...
Zhipeng Deng, Camila B. Tovani, Simona Bianco, Gianni Comandini, Aya Elghajiji, Mina Aleemardani, Roxana Moscalu, Jeremie Zappia, Bianca Fernandes, Olivia Annett, Chrissy L. Hammond, Jason Wong, Dave J. Adams, Fabrizio Scarpa, Michael R. Whitehouse, Annela M. Seddon, James P. K. Armstrong   +16 more
wiley   +1 more source

Programming Palladium Cage Geometry through Ligand Redox Modulation

Angewandte Chemie, EarlyView.
A neutral redox‐active exTTF ligand (L) forms a Pd2L4 cage, whereas its oxidized form (Lox) yields a Pd2(Lox)2 macrocycle. Lox further assembles with a dibenzothiophene derivative (L′) into Pd2(Lox)(L′)2 and Pd4(Lox)4(L′)4 architectures. Reduction of Pd2(Lox)2 and Pd2(Lox)(L′)2 restores the parent Pd2L4 cage, enabling redox controlled nuclearity ...
Jennifer Bou Zeid, Jean Nicolas, Maksym Dekhtiarenko, David Canevet, Magali Allain, Vincent Carré, Frédéric Aubriet, Laura Neukirch, Elie Benchimol, Marc Sallé, Guido H. Clever, Sébastien Goeb   +11 more
wiley   +2 more sources

Le contexte : reconversion de la chimie vers la chimie verte

Oléagineux, Corps gras, Lipides, 2012
Chemical industry is a key sector on the world industrie with a twolrd urnover that reached 1 871 billions of euros in 2009 and with an annual turnove in France of 77 billions in 2010.
Bewa Hilaire, Le Ravalec Virginie
doaj   +1 more source

Fontenelle et la chimie : la recherche d’une « loi fondamentale » pour la chimie

Methodos, 2012
In this paper, my aim is to reexamine Fontenelle’s position as to chemistry. Before he became the Secretary of the Académie Royale des Sciences of Paris, Fontenelle knew chemistry quite badly and he ridiculed it in his personal works; but as the ...
Luc Peterschmitt
doaj   +1 more source

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

Advanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis, Filip Aniés, Yiyang Yu, Mohammed Ghadiyali, Hendrik Faber, Zhanibek Bizak, Youssef Kabri, Pavlos Tzourmpakis, Suman Mandal, Linqu Luo, Temur Maksudov, Mohamad Insan Nugraha, Harold F. Mazo‐Mantilla, Patrice Vanelle, Julie Broggi, Khaled N. Salama, Udo Schwingenschlögl, Martin Heeney, Atif Shamim, Thomas D. Anthopoulos   +19 more
wiley   +1 more source

FORMAREA COMPETENŢELOR PRIN ABORDAREA AXIOLOGICĂ A PROBLEMELOR DE CHIMIE

Studia Universitatis Moldaviae: Stiinte ale Educatiei, 2013
În articol sunt examinate aspecte ce vizează implementarea curriculei la chimie în scopul formării competenţelor specifice de a rezolva probleme la chimie prin prisma abordării lor axiologice, urmărindu-se şi scopul formării la elevi a sistemului de ...
USM ADMIN
doaj  

Observation of magnetic circular dichroism in Fe L_{2,3} x-ray-fluorescence spectra [PDF]

, 1993
We report experiments demonstrating circular dichroism in the x-ray-fluorescence spectra of magnetic systems, as predicted by a recent theory. The data, on the L_{2,3} edges of ferromagnetic iron, are compared with fully relativistic local spin density ...
A. Lebugle, B. L. Gyorffy, B. T. Thole, C. F. Hague, C. T. Chen, D. P. Craig, G. Schütz, G. van der Laan, H. Ebert, H. Ebert, J-M. Mariot, J. L. Erskine, N. V. Smith, P. J. Durham, P. Strange, P. Strange, P. Strange, P. Strange, S. Imada, S. P. Collins, W. Heitler   +20 more
core   +1 more source

Nanocrystal Quality–Controlled Scintillation in Porous YAG:Ce Aerogels

Advanced Optical Materials, EarlyView.
High‐temperature thermal treatment of YAG:Ce nanoscintillator aerogels increases light yield under ionizing radiation by up to eightfold without affecting timing performance. Additionally, low‐temperature atmospheric treatments reversibly modify the cerium oxidation state, revealing strong defect sensitivity and offering new strategies to optimize ...
Pavlo Mai, Yannis Cheref, Raphael Marie‐Luce, Frédéric Lerouge, Julien Houel, Gilles Ledoux, Alice Perret, Francesca Cova, Mauro Fasoli, Benoit Sabot, Frédéric Chaput, Christophe Dujardin   +11 more
wiley   +1 more source

Solvent‐Induced Covalent Bond Softening Boosts Battery Voltage

Angewandte Chemie, EarlyView.
The strong attractive interaction between the nucleophilic center of the solvent and the electrophilic region of the covalently bonded cathode fragment triggers charge transfer. This results in the electron population in the antibonding orbital of the covalent bond, leading to bond weakening and elongation, and consequently increasing the cathode ...
Yanyan Wang, Zhijie Wang, Mengzi Geng, Chunzhen Yang, Guangchao Li, Jean‐Marie Tarascon, Biao Zhang   +6 more
wiley   +2 more sources