Results 51 to 60 of about 9,889,154 (400)

The Morphological Responses of Calendula officinalis L. “Radio” to the Foliar Application of Benzyladenine and Different Light Spectra

open access: yesAgronomy, 2021
Pot marigold is a valuable medicinal plant with great decorative value. Three combinations of light (white (W)—170 μmol m−2 s−1, white + blue (W+B)—230 μmol m−2 s−1, white + red (W+R)—230 μmol m−2 s−1) were used to analyse the influence of a diversified ...
Barbara Frąszczak   +2 more
doaj   +1 more source

Increasing the Nighttime Lighting Duration Can Hasten Flowering of Long-day Plants

open access: yesHortScience
Low-intensity (≈2 μmol·m−2·s−1) photoperiodic lighting is often delivered at night to promote flowering of long-day greenhouse ornamentals when natural daylengths are short.
Qingwu Meng, Thomas J. Kramer
doaj   +1 more source

Colored Shade Nets Affect Growth but Not Flowering of Four Greenhouse-grown Potted Ornamental Species

open access: yesHortScience, 2023
The color of horticultural shade nets is known to influence crop growth and quality because of variations in the amount and quality of light. Four ornamental plant species (celosia, begonia, gerbera, and fountain grass) were grown under aluminet, pearl ...
Harpreet Singh   +3 more
doaj   +1 more source

670 nm light mitigates oxygen-induced degeneration in C57BL/6J mouse retina [PDF]

open access: yes, 2016
BACKGROUND Irradiation with light wavelengths from the far red (FR) to the near infrared (NIR) spectrum (600 nm -1000 nm) has been shown to have beneficial effects in several disease models.
Albarracin, Rizalyn   +4 more
core   +1 more source

Filtering Light-Emitting Diodes to Investigate Amber and Red Spectral Effects on Lettuce Growth

open access: yesPlants, 2021
Red and blue light are the principal wavelengths responsible for driving photosynthetic activity, yet amber light (595 nm) has the highest quantum efficiency and amber-rich high pressure sodium lamps result in superior or comparable plant performance. On
Bo-Sen Wu   +2 more
doaj   +1 more source

Still red light for red light cameras? An update

open access: yesAccident Analysis & Prevention, 2013
The present study has replicated the results from a previous meta-analysis by Erke (2009) [Erke, A., 2009. Red light for red-light cameras? A meta-analysis of the effects of red-light cameras on crashes. Accident Analysis & Prevention 41 (5), 897-905.] based on a larger sample of RLC-studies, and provides answers to the criticisms that were raised by ...
openaire   +3 more sources

A tale of three taxes: photo-gyro-gravitactic bioconvection [PDF]

open access: yes, 2011
The term bioconvection encapsulates the intricate patterns in concentration, due to hydrodynamic instabilities, that may arise in suspensions of non-neutrally buoyant, biased swimming microorganisms. The directional bias may be due to light (phototaxis),
Bees, M., Williams, C.R.
core   +1 more source

Role of blue and red light in stomatal dynamic behaviour

open access: yesJournal of Experimental Botany, 2019
Plants experience changes in light intensity and quality due to variations in solar angle and shading from clouds and overlapping leaves. Stomatal opening to increasing irradiance is often an order of magnitude slower than photosynthetic responses, which
Jack S. A. Matthews   +2 more
semanticscholar   +1 more source

Carotenoid Production by Dunaliella salina under Red Light

open access: yesAntioxidants, 2019
The halotolerant photoautotrophic marine microalga Dunaliella salina is one of the richest sources of natural carotenoids. Here we investigated the effects of high intensity blue, red and white light from light emitting diodes (LED) on the production of ...
Yanan Xu, P. Harvey
semanticscholar   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

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