Results 151 to 160 of about 284,321 (307)

Asymmetric Reduction of Unactivated Alkenes

Chemistry – A European Journal, EarlyView.
Unactivated alkenes rank among the most inert functional groups in synthesis and their selective reduction remains challenging. This Review charts the evolution from classical metal‐catalyzed hydrogenation to radical hydrogen atom transfer (HAT) and emerging biocatalytic concepts, highlighting how complementary mechanistic strategies, including the ...
Nico D. Fessner, Sebastian Roth, Richard Niese, Michael Müller   +3 more
wiley   +1 more source

Relaxation Dynamics of Chlorophyll b in the Sub-ps Ultrafast Timescale Measured by 2D Electronic Spectroscopy. [PDF]

Int J Mol Sci, 2020
Fresch E, Collini E.
europepmc   +1 more source

Mimicking The Photosynthetic Special Pair With Aluminum(III) Porphyrin Homodimer – Fullerene (C60) Supramolecular Assemblies Capable of Long‐Lived Charge Separation

Chemistry – A European Journal, EarlyView.
The axial‐bonding of aluminum(III) porphyrins was used to create two covalently linked special‐pair mimics to probe charge‐transfer between a porphyrin dimer and a C60 unit for artificial photosynthesis. Although excitonic coupling between the porphyrins is weak, incorporation of a second porphyrin markedly increases both the yield and lifetime of the ...
Stefan Charon, Jatan K. Sharma, Niloofar Zarrabi, Peyton Ellis, Paul A. Karr, Art van der Est, Francis D'Souza, Prashanth K. Poddutoori   +7 more
wiley   +1 more source

Optimization of a reactor for biostimulant production with emphasis on the economic aspects of hydrolysis

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Biostimulants are increasingly used in agriculture to promote plant growth, improve stress tolerance, and support sustainable farming practices. One common method of production is chemical hydrolysis of protein‐rich waste, such as tannery by‐products, offering an economical and eco‐friendly alternative to conventional raw materials.
Karel Kolomazník, Lubomír Šánek, Petr Dostálek, Clara Desroches   +3 more
wiley   +1 more source

Consequence of Diverse Nitrogen Levels on Leaf Pigments in Five Rice Genotypes Under Field Emergent Circumstances

International Journal of Bio-Resource and Stress Management, 2010
The paper assesses the effect of dissimilar nitrogen levels on chlorophyll a, b, a/b, a+b and carotenoids content in assorted rice genotypes growing in field situation. The experiment was conducted throughout kharif season in 2008 and 2009.
Hukum Singh, Amit Verma, M. Krishnamoorthy, Alok Shukla   +3 more
doaj  

Chlorophyll b degradation by chlorophyll b reductase under high-light conditions

Chlorophyll b degradation by chlorophyll b reductase under high-light conditions
The light-harvesting chlorophyll a/b binding protein complex of photosystem II (LHCII) is the main antenna complex of photosystem II (PSII). Plants change their LHCII content depending on the light environment. Under high-light conditions, the content of LHCII should decrease because over-excitation damages the photosystem.
openaire  

Green Chemistry im Chemieunterricht: eine farbstoffsensibilisierte Solarzelle mit sicheren und leicht verfügbaren Materialien

CHEMKON, EarlyView.
Farbstoffsensibilisierte Solarzellen (Dye‐sensitized Solar Cells, DSSCs) stellen einen biomimetischen Ansatz zur Umwandlung von Sonnenlicht in elektrische Energie dar, der sich am Funktionsprinzip der Photosynthese orientiert. Trotz ihres seit den frühen 1990er‐Jahren bekannten Konzepts existieren bislang nur wenige experimentelle Zugänge, die zugleich
Kristin Sellmann, Stasa Sekularac, Carsten Streb, Annabel Pauly   +3 more
wiley   +1 more source

Correction to: Why is chlorophyll b only used in light-harvesting systems? [PDF]

J Plant Res, 2019
Kume A, Akitsu T, Nasahara KN.
europepmc   +1 more source

High atmospheric pressure rescues plant growth under humidity stress: A model for climate‐resilient deep underground agriculture

Deep Underground Science and Engineering, EarlyView.
High atmospheric pressure (120 kPa) in deep underground counteracts humidity‐induced physiological stress in plants, stabilizing water balance and enhancing antioxidative defenses. This synergy boosts biomass despite elevated humidity, demonstrating sustainable deep underground agriculture potential under climate uncertainty.
Yuxin He, Linglu Xu, Xiao Tan, Wenhua Zhuang, Naiwen Li, Chao Liu, Bo Tan   +6 more
wiley   +1 more source

Why is chlorophyll b only used in light-harvesting systems? [PDF]

J Plant Res, 2018
Kume A, Akitsu T, Nasahara KN.
europepmc   +1 more source