Results 81 to 90 of about 21,000 (274)

Chromosome doubling can increase heat tolerance in Lonicera japonica as indicated by chlorophyll fluorescence imaging

Biologia Plantarum, 2011
Imaging fluorometry was applied to investigate the tolerance of Japanese honeysuckle (Lonicera japonica Thunb.) of different ploidy levels to heat stress. Seedlings of L. japonica, the diploid cv. Damaohua and the tetraploid cv.
W. D. Li, X. Hu, J. K. Liu, G. M. Jiang, O. Li, D. Xing   +5 more
doaj   +1 more source

Effects of different N treatments on the photochemical quenching of variable chlorophyll fluorescence (qP) (2015).

, 2018
Effects of different N treatments on the photochemical quenching of variable chlorophyll fluorescence (qP) (2015).
Youhong Song (579200), Lili Jing (254220), Chen Peng (429537), Wenming Wu (635670), Shiji Wang (645155), Hongjian Chen (3266916), Lin Zhang (8926), Jincai Li (2634277)   +7 more
core   +1 more source

Using Lifetime and Quenching Rate Constant to Determine Quencher Concentration

, 2022
Excited state quenching is a key step in photochemical reactions that involve energy or electron transfer. High reaction quantum yields require sufficiently high concentrations of quencher to ensure efficient quenching.
Xena, Soto, John, Swierk
core   +1 more source

Tunable‐Threshold UV Dosimetry With Programmable Luminescent Tags via Oxygen‐Mediated Room‐Temperature Phosphorescence

Advanced Materials Technologies, EarlyView.
A fully organic UV threshold dosimeter is developed by exploiting the oxygen‐sensitive room‐temperature phosphorescence of a purely organic emitter in a polymer matrix. Upon reaching a specific cumulative UV dose, photochemical oxygen depletion triggers a sharp, high‐contrast emission.
Tim Achenbach, Paul‐Anton Will, Karl Sebastian Schellhammer, Sebastian Reineke   +3 more
wiley   +1 more source

Hydrogen (H2) Recovery From Hydrogen Sulfide (H2S): Current Technologies, Challenges, and Future Outlook

Advanced Science, EarlyView.
ABSTRACT Hydrogen sulfide (H2S) can be transformed into hydrogen (H2) through several chemical and catalytic processes, offering a promising route for both waste treatment and clean H2 production. This colorless, flammable, and toxic gas is found abundantly in swamps, volcanoes, hot springs, sewages, other natural gas fields, and even in refineries and
Divyesh Cirikonda, Astrid Campos‐Mata, Sehmus Ozden, Shreyasi Chattopadhyay, Pulickel M. Ajayan   +4 more
wiley   +1 more source

Effects of drought stress on photosynthesis and photosynthetic electron transport chain in young apple tree leaves

Biology Open, 2018
In our study, the effects of water stress on photosynthesis and photosynthetic electron transport chain (PETC) were studied in several ways, including monitoring the change of gas exchange parameters, modulated chlorophyll fluorescence, rapid ...
Zhibo Wang, Guofang Li, Hanqing Sun, Li Ma, Yanping Guo, Zhengyang Zhao, Hua Gao, Lixin Mei   +7 more
doaj   +1 more source

Smart Nanotechnologies for Multimodal Neuromodulation and Brain Interfacing

Advanced Science, EarlyView.
Recent advances in smart nanotechnologies are expanding the toolbox for brain interfacing, from wireless neuromodulation and high‐resolution sensing to targeted delivery within the central nervous system. By combining responsive nanomaterials with bioinspired design, these platforms enable multimodal interactions with neurons and glia, while also ...
Tommaso Curiale, Marie Celine Lefevre, Alessio Carmignani, Maria Cristina Ceccarelli, Matteo Battaglini, Attilio Marino, Gianni Ciofani   +6 more
wiley   +1 more source

Light-induced Dissociation of an Antenna Hetero-oligomer Is Needed for Non-photochemical Quenching Induction [PDF]

, 2009
PsbS plays a major role in activating the photoprotection mechanism known as "non-photochemical quenching," which dissipates chlorophyll excited states exceeding the capacity for photosynthetic electron transport.
BETTERLE N, BALLOTTARI M, CAZZANIGA S, MOROSINOTTO, TOMAS, DE BIANCHI S, BASSI R., ZORZAN S, DALL'OSTO L   +7 more
core   +2 more sources

Non-photochemical quenching of chlorophyll fluorescence in photosynthesis. 5-hydroxy-1,4-naphthoquinone in spinach thylakoids as a model for antenna based quenching mechanisms

, 1998
In vivo mechanisms of non-photochemical quenching that contribute to energy dissipation in higher plants are still a source of some controversy. In the present study we used an exogenous oxidized quinone, 5-hydroxy-1,4-naphthoquinone to induce quenching ...
Wiebe, Scott, Bruce, Doug, Vasil'ev, Sergej   +2 more
core   +1 more source

Bidirectional Photoswitching of a Tailored Azobenzene with Red and Far‐Red Light Involving Triplet Sensitization in an Aqueous System

Advanced Science, EarlyView.
The action spectrum of a tailored azobenzene is shifted toward bio‐optical window through the chemical modification of its singlet and triplet energy levels. Consequently, the bidirectional photo‐switching of azobenzene in physiological conditions is achieved when excited by red and far‐red light, which offers greater tissue penetration.
Mila Miroshnichenko, Helen Hölzel, Edvinas Orentas, Karolis Kazlauskas, Pedro Ferreira, Fabienne Dumoulin, Carles Alcaide, Miquel Solà, Roger Bresolí‐Obach, Santi Nonell, Pankaj Bharmoria, Kasper Moth‐Poulsen   +11 more
wiley   +1 more source