Results 131 to 140 of about 428,357 (308)

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

Changes in Chlorophyll a Fluorescence in Ipomoea batatas (Convolvulaceae) Genotypes Under Attack by Bedellia somnulentella (Lepidoptera: Bedelliidae)

Plants
Sweet potato, Ipomoea batatas (L.) Lam., is a major food crop in developing countries and is considered essential for the food security of low-income populations.
Maria J. S. Cabral, Rodrigo A. Pinheiro, Isabel M. Silva, William S. B. Ngamgna, Marcio Schmiele, Germano L. Demolin Leite, Muhammad Haseeb, Marcus A. Soares   +7 more
doaj   +1 more source

Epimerization of chlorophyll derivatives [PDF]

, 1992
Mazaki, Hitoshi, Scheer, Hugo, Struck, Andreas, Takahashi, Terumi, Watanabe, Tadashi   +4 more
core   +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

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

Differences in Crop Growth Rate , Chlorophyll Content Index and Nitrate Reductase in Source N of Sweet Corn [PDF]

, 2016
A research to assess the interaction of nitrogen sources and doses of N in the growth and production as well as physiological effects of corn plants has been conducted in the Faculty of Animal and Agricultural Sciences, Diponegoro University, Indonesia ...
DARMAWATI, Adriani, KUSMIYATI, Florentina, PURBAJANTI, Endang Dwi, ROESSALI, Wiludjeng, SLAMET, Widyati   +4 more
core  

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

Natural Anthraquinone‐Like Compound Extracted from Green Husk of Walnut Improves Photocatalytic H2O2 Production Catalyzed by TiO2 Nanoparticles

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
In this work, a novel biomolecule/semiconductor hybrid catalyst was prepared by loading anthraquinone‐liked juglone onto anatase TiO2. This catalyst exhibited high photocatalytic activity for H2O2 production. Hydrogen peroxide (H2O2) is a vital oxidant with broad industrial applications, and its production via photocatalysis represents a highly ...
Zengyin He, Cui Li, Mingze Ni, Shu Lin, Kezhen Qi   +4 more
wiley   +1 more source

Ground‐ and Excited‐State Mixed Valency in a 4,4′‐Bipyridine‐Bridged Bimetallic Di‐Ruthenium Complex

European Journal of Inorganic Chemistry, EarlyView.
Photoinduced mixed‐valence interactions across a 4,4′‐bpy bridge were studied. MLCT excited states in the bimetallic complex are longer‐lived than in the monometallic reference, thanks to metal–metal electronic coupling and hole delocalization, but are still shorter than the nanosecond timescale relevant for diffusional reactivity.
Ivana Ramírez‐Wierzbicki, Frank W. Heinemann, Leonardo D. Slep, Alejandro Cadranel   +3 more
wiley   +1 more source