Results 41 to 50 of about 13,718 (195)

Surface‐Ligand‐Dependent Excited‐State Dynamics in Aqueous CuInSe2/ZnS Quantum Dot–Chlorophyll Assemblies

open access: yesAdvanced Materials Interfaces, EarlyView.
CuInSe2/ZnS quantum dots are synthesized in water and coupled with chlorophyll to probe ligand‐controlled excited‐state interactions. Broad visible–NIR emission and high PLQY are observed. Time‐resolved measurements reveal shortened chlorophyll lifetimes, indicating dynamic quenching via Förster energy and/or charge transfer, highlighting surface ...
Özge İbiş   +3 more
wiley   +1 more source

Effect of salicylic acid on tobacco (Nicotiana rustica) plant under drought conditions [PDF]

open access: yesZīst/shināsī-i Giyāhī-i Īrān, 2015
Drought stress impact photosynthesis and stomatal conductance, and may reduce the overall production capacity of plants. Since exogenous application of salicylic acid (SA) can partially alleviatebe increased the negative effects tolerance of drought ...
Ghader Habibi   +2 more
doaj  

Influence of cadmium on photosynthesis of Brassica campestris ssp. chinensis L

open access: yes浙江大学学报. 农业与生命科学版, 2005
Effects of different concentrations of Cd on photosynthesis and chlorophyll fluorescence in Pakchoi (Brassica campestris ssp. chinensis L.) were studied in solution culture. The results showed that low concentrations of Cd (0.01, 0.1 mg/L) promoted plant
LI De-ming   +3 more
doaj   +1 more source

Photochemical efficiency in pineapple plants under saline water irrigation

open access: yesRevista Ambiente & Água, 2020
Studies determining physiological characteristics of field-grown pineapples irrigated with low-quality water are lacking. This work evaluated the photochemical efficiency of ‘Pérola’ pineapple irrigated with saline water in the semiarid region of Bahia ...
Cleiton Fernando Barbosa Brito   +5 more
doaj   +1 more source

Light Switchable Ionic Conductivity of Arylazopyrazole Modified Polysiloxanes

open access: yesAdvanced Materials Technologies, EarlyView.
We present a polysiloxane functionalized with a novel arylazopyrazole dye that undergoes reversible photoisomerization. Upon lithium bis(trifluoromethanesulfonyl)imide addition and UV irradiation, the polymer exhibits a shift in tan(d) toward higher frequencies and enhanced ionic conductivity.
Malte S. Beccard   +7 more
wiley   +1 more source

Leaf Growth, Gas Exchange and Chlorophyll Fluorescence Parameters in Response to Different Water Deficits in Wheat Cultivars

open access: yesPlant Production Science, 2011
We investigated responses of wet climate (CY17) and dry climate (XN889) Trititcum aestivum L cultivars under 85, 55 and 25% field water capacity (FC). Less decrease in grain yield, relative water content, growth, gas exchange and chlorophyll fluorescence
Xiaoli Wu, Weikai Bao
doaj   +1 more source

Non-photochemical quenching in cryptophyte alga Rhodomonas salina is located in chlorophyll a/c antennae. [PDF]

open access: yesPLoS ONE, 2012
Photosynthesis uses light as a source of energy but its excess can result in production of harmful oxygen radicals. To avoid any resulting damage, phototrophic organisms can employ a process known as non-photochemical quenching (NPQ), where excess light ...
Radek Kaňa   +3 more
doaj   +1 more source

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

open access: yesAdvanced 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   +3 more
wiley   +1 more source

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

open access: yesAdvanced 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   +4 more
wiley   +1 more source

Femtosecond Transient Absorption Spectroscopy on the Light-Adaptation of Living Plants

open access: yesEPJ Web of Conferences, 2013
The photoprotection reaction of the photosynthetic system under excessive sun light has been resolved for the first time by femtosecond absorption spectroscopy from the visible to near-infrared in intact leaves of Arabidopsis thaliana.
Holzwarth A.R., Jahns P., Müller M.G.
doaj   +1 more source

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