Results 51 to 60 of about 315,978 (276)

Effects of Environmental and Non-Environmental Factors on Dynamic Photosynthetic Carbon Assimilation in Leaves under Changing Light

open access: yesPlants, 2023
Major research on photosynthesis has been carried out under steady light. However, in the natural environment, steady light is rare, and light intensity is always changing.
Yu-Ting Li, Hui-Yuan Gao, Zi-Shan Zhang
doaj   +1 more source

The deuterium abundance in QSO absorption systems: a mesoturbulent approach [PDF]

open access: yes, 2000
A new method, based on simulated annealing technique and aimed at the inverse problem in the analysis of intergalactic or interstellar complex spectra of hydrogen and metal lines, is outlined.
Levshakov, Sergei A.
core   +2 more sources

Speed of light-induced stomatal movement is not correlated to initial or final stomatal conductance in rice

open access: yesPhotosynthetica, 2022
In nature, plants are often confronted with wide variations in light intensity, which may cause a massive carbon loss and water waste. Here, we investigated the response of photosynthetic rate and stomatal conductance to fluctuating light among ten rice ...
Z. XIONG   +5 more
doaj   +1 more source

Perception of Lighting Fluctuation in Office Lighting Environment

open access: yesJournal of Light & Visual Environment, 2003
The non-periodic fluctuation of artificial lighting in offices was investigated to clarify the threshold at which the fluctuation is perceived. The experiments showed that fluctuation ratio of 0.92-1.06, i.e. 7% of the fluctuation, is not perceived when the observers tried to be conscious of the fluctuation.
Tomoaki SHIKAKURA   +2 more
openaire   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Fluctuating light experiments and semi-automated plant phenotyping enabled by self-built growth racks and simple upgrades to the IMAGING-PAM

open access: yesPlant Methods, 2019
Background Over the last years, several plant science labs have started to employ fluctuating growth light conditions to simulate natural light regimes more closely.
Dominik Schneider   +5 more
doaj   +1 more source

Monte Carlo Radiative Transfer Simulations on the Influence of Surface Waves on Underwater Light Fields [PDF]

open access: yes, 2010
A Monte Carlo model has been developed for calculating the penetration of light into the ocean. For monochromatic light (490 nm) the spatial exact allocation of the scattered parts of underwater light is described in terms of the variation of particle ...
Hieronymi, Martin, Macke, Andreas
core  

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

The effects of different daily irradiance profiles on Arabidopsis growth, with special attention to the role of PsbS

open access: yesFrontiers in Plant Science, 2023
In nature, light is never constant, while in the controlled environments used for vertical farming, in vitro propagation, or plant production for scientific research, light intensity is often kept constant during the photoperiod.
Christo Schiphorst   +7 more
doaj   +1 more source

Fluctuations of CMBR in accelerating universe [PDF]

open access: yes, 2006
The influence of the observed relict vacuum energy on the fluctuations of CMBR going through cosmological matter condensations is studied in the framework of the Einstein-Strauss-de Sitter vakuola model.
Schee, J., Stuchlík, Z.
core   +3 more sources

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