Results 21 to 30 of about 6,377,683 (294)
Sensors, 2023 The light intensity and color temperature of natural light periodically change and promote the circadian entrainment of the human body. In addition, the color temperature cycle of natural light that is unique to each region is formed by its location and ...
Seung-Taek Oh +2 more
doaj +1 more source
A Variable-Cycle Traffic Light Queue
, 2023 In this paper we look at queueing phenomena occurring at a traffic light. As opposed to the well-known and well-researched Fixed-cycle Traffic Light, we consider a traffic light with variable lengths for the red and green periods. More specifically we apply a method that allows the red and green periods to be according to a stochastic distribution.
Freek Verdonck +2 more
openaire +3 more sources
Picosecond events in the photochemical cycle of the light-driven chloride-pump halorhodopsin [PDF]
, 1985 The early events in halorhodopsin after light excitation are studied with picosecond time resolution. Absorption and fluorescence measurements show that the electronically excited state of the incorporated retinal has a lifetime of 5 ps. Within that time
Hegemann, P. +5 more
core +2 more sources
Early picosecond events in the photo cycle of Bacteriorhodopsin [PDF]
, 1986 The primary processes of the photochemical cycle of light-adapted bacteriorhodopsin (BR) were studied by various experimental techniques with a time resolution of 5 × 10-13 s. The following results were obtained.
Koelling, E. +5 more
core +2 more sources
Journal of Photochemistry and Photobiology, 2022 Foraminifera are essential contributors to the marine carbon and nitrogen cycle. A small group of foraminifera hosts symbiotic microalgae and kleptoplasts and irradiance is a key variable influencing their metabolism.
Michael Lintner +5 more
doaj +1 more source
Influence of Medium Frequency Light/Dark Cycles on the Cultivation of Auxenochlorella pyrenoidosa
Applied Sciences, 2020 Light (wavelength, intensity, and light/dark cycle) have been considered as one of the most important parameters for microalgae cultivation. In this paper, the effect of medium frequency intermittent light on Auxenochlorella pyrenoidosa (formerly ...
Zhijie Chen, Bosheng Su
doaj +1 more source
The velocity of light intensity increase modulates the photoprotective response in coastal diatoms. [PDF]
PLoS ONE, 2014 In aquatic ecosystems, the superimposition of mixing events to the light diel cycle exposes phytoplankton to changes in the velocity of light intensity increase, from diurnal variations to faster mixing-related ones.
Vasco Giovagnetti +4 more
doaj +1 more source
The Effect of LEDs on Biomass and Phycobiliproteins Production in Thermotolerant Oscillatoria sp.
Applied Sciences, 2022 This study evaluates the role of different LED lights (white, blue/red), intensity (µmol m−2 s−1), and photoperiod in the production of biomass and phycocyanin-C, allophycocyanin and phycoerythrin (C-PC, APC, and PE respectively) from a novel ...
Jefferson E. Contreras-Ropero +8 more
doaj +1 more source
Green light for the cell cycle [PDF]
The EMBO Journal, 2005 In recent years, considerable progress has been made in unraveling the control mechanisms operating on the plant cell cycle and most of the key regulators have now been identified, including cyclin-dependent kinases (CDKs), cyclins, CDK-inhibitory proteins, the WEE kinase and proteins of the retinoblastoma-related protein (RBR)/E2F/DP pathway.
openaire +2 more sources
Translation Invariance-Based Deep Learning for Rotating Machinery Diagnosis
Shock and Vibration, 2020 Discriminative feature extraction is a challenge for data-driven fault diagnosis. Although deep learning algorithms can automatically learn a good set of features without manual intervention, the lack of domain knowledge greatly limits the performance ...
Wenliao Du +5 more
doaj +1 more source