Results 91 to 100 of about 3,145,782 (320)

Existing antioxidant levels are more important in acclimation to supplemental UV-B irradiation than inducible ones: Studies with high light pretreated tobacco leaves [PDF]

, 2012
Greenhouse grown tobacco plants were exposed to supplemental ultraviolet irradiation (280-400 nm, UV-B centered) for 6 days and changes in their photosynthesis (gas exchange and electron transport) and general and specific antioxidant activities were ...
Hideg, Éva, Majer, Petra
core   +1 more source

Ultrahigh‐Yield, Multifunctional, and High‐Performance Organic Memory for Seamless In‐Sensor Computing Operation

Advanced Functional Materials, EarlyView.
Molecular engineering of a nonconjugated radical polymer enables a significant enhancement of the glass transition temperature. The amorphous nature and tunability of the polymer, arising from its nonconjugated backbone, facilitates the fabrication of organic memristive devices with an exceptionally high yield (>95%), as well as substantial ...
Daeun Kim, Jaehyoung Ko, Namju Kim, Quynh H. Nguyen, Hoyeon Lee, Joohwan Eo, Seongeon Jin, Ji Eon Kwon, Seung‐Yeol Jeon, Youngdo Jeong, Dongseok Kwon, Sung Gap Im, Sanghan Lee, Byung Chul Jang, Yongho Joo   +14 more
wiley   +1 more source

CHEMICALLY MODIFIED PHOTOSYNTHETIC BACTERIAL REACTION CENTERS: CIRCULAR DICHROISM, RAMAN RESONANCE, LOW TEMPERATURE ABSORPTION, FLUORESCENCE AND ODMR SPECTRA AND POLYPEPTIDE COMPOSITION OF BOROHYDRIDE TREATED REACTION CENTERS FROM Rhodobacter sphaeroides R26 [PDF]

, 1988
Reaction centers from Rhodobacter sphaeroides have been modified by treatment with sodium borohydride similar to the original procedure [Ditson et al., Biochim. Biophys. Acta 766, 623 (1984)], and investigated spectroscopically and by gel electrophoresis.
Angerhofer A., Angerhofer A., Beck J., Breton J., Clayton R. K., Crestfield A. M., Feher G., Hoff A., Holten D., Lutz M., Lutz M., Ogrodnik A., Reed D. W., Robert B., Steiner R.   +14 more
core   +1 more source

Charge‐Induced Morphing Gels for Bioinspired Actuation

Advanced Functional Materials, EarlyView.
This study introduces a novel electroactive actuation mechanism that enables the gel material to generate substantial and reversible shape‐changing while preserving topological and isochoric (volumetric) equivalence. The resultant morphing behaviors can mimic the movements of muscle‐driven organelles in nature, including cilia‐like beating and ...
Ciqun Xu, Saba Firouznia, Charl F. J. Faul, Majid Taghavi, Jonathan Rossiter   +4 more
wiley   +1 more source

Multimodal Structural Color Graphics Based on Colloidal Photonic Microdome Arrays

Advanced Functional Materials, EarlyView.
A hybrid photonic system combining colloidal crystals and microscale domes is designed to achieve four switchable optical states via the interplay of Bragg reflection and TIR interference. The graphics composed of the photonic microdome arrays provide tunable, angle‐sensitive structural coloration and concealed‐to‐revealed transitions, offering a ...
Jun‐Gu Kang, Hwan‐Young Lee, Chaerim Son, Hyeonbin Jo, Shin‐Hyun Kim   +4 more
wiley   +1 more source

When Black and White make Green: the Surprising Interplay of Structure and Pigments

CHIMIA, 2019
: The natural world is teeming with color, which originates either from the wavelength-dependent absorp- tion of light by pigments or from scattering from nanoscale structures, or both.
Tianqi Sai, Bodo D. Wilts, Alba Sicher, Ullrich Steiner, Frank Scheffold, Eric R. Dufresne   +5 more
doaj   +1 more source

A quantum mechanical analysis of the light-harvesting complex 2 from purple photosynthetic bacteria. Insights into the electrostatic effects of transmembrane helices

, 2010
We perform a quantum mechanical study of the peptides that are part of the LH2 complex from Rhodopseudomonas acidophila, a non-sulfur purple bacteria that has the ability of producing chemical energy from photosynthesis.
Bryant, Cogdell, Cogdell, Cogdell, Cramer, Damjanović, Fabio Pichierri, Glaser, He, Herek, Hoff, Hol, Hu, Isaacs, Kjellberg, Klamt, Koepke, Linnanto, Nicholls, Papiz, Pichierri, Pichierri, Pichierri, Pichierri, Prince, Roszak, Scholes, Stewart, Stewart, Stewart, Stewart, Ullmann, van Oijen   +32 more
core   +1 more source

Phytohormone-mediated interkingdom signaling shapes the outcome of rice-Xanthomonas oryzae pv. oryzae interactions [PDF]

, 2015
Background: Small-molecule hormones are well known to play key roles in the plant immune signaling network that is activated upon pathogen perception. In contrast, little is known about whether phytohormones also directly influence microbial virulence ...
De Vleesschauwer, David, He, Ya-Wen, Höfte, Monica, Kojima, Mikiko, Sakakibari, Hitoshi, Venturi, Vittorio, Xu, Jing, Zhou, Lian   +7 more
core   +2 more sources

Block Copolymers: Emerging Building Blocks for Additive Manufacturing

Advanced Functional Materials, EarlyView.
This review addresses how block copolymer (BCP) physics and rheology have led to the widespread use of BCPs in advanced additive manufacturing techniques, with particular emphasis on the untapped potential of these nanostructured materials toward achieving multi‐scale architected materials with unique, programmable material properties.
Alice S. Fergerson, Hemish B. Thakkar, Jiaen Wu, Emily C. Davidson   +3 more
wiley   +1 more source

Production, biological characterization, and applications of natural pigments from filamentous fungi [PDF]

Brazilian Journal of Biology
Natural dyes are gaining prominence as safer, bioactive alternatives to synthetic colorants, with microbial production offering efficient and cost-effective methods.
A. A. Alyami, A. H. Alabdalall, H. Chakroun, S. A. Aldakeel, A. M. Albarrag, E. Kotb, F. Al-Zahrani   +6 more
doaj   +1 more source