Results 41 to 50 of about 713 (164)

Light-Triggered Carotenogenesis in Myxococcus xanthus: New Paradigms in Photosensory Signaling, Transduction and Gene Regulation

open access: yesMicroorganisms, 2021
Myxobacteria are Gram-negative δ-proteobacteria found predominantly in terrestrial habitats and often brightly colored due to the biosynthesis of carotenoids.
S. Padmanabhan   +10 more
doaj   +1 more source

Function and regulation of Vibrio campbellii proteorhodopsin: acquired phototrophy in a classical organoheterotroph.

open access: yesPLoS ONE, 2012
Proteorhodopsins (PRs) are retinal-binding photoproteins that mediate light-driven proton translocation across prokaryotic cell membranes. Despite their abundance, wide distribution and contribution to the bioenergy budget of the marine photic zone, an ...
Zheng Wang   +6 more
doaj   +1 more source

Thyroid hormone signalling genes are regulated by photoperiod in the hypothalamus of F344 rats.

open access: yesPLoS ONE, 2011
Seasonal animals adapt their physiology and behaviour in anticipation of climate change to optimise survival of their offspring. Intra-hypothalamic thyroid hormone signalling plays an important role in seasonal responses in mammals and birds. In the F344
Alexander W Ross   +4 more
doaj   +1 more source

Photoinductive imaging: a new NDE technique

open access: yesNDT International, 1989
We describe a new NDE imaging technique based on eddy current detection of thermal waves. NDE applications of thermal-wave imaging techniques using detection by photoacoustic, piezoelectric, radiometric, and optical beam deflection methods are well known [1,2].
Moulder, J.   +4 more
openaire   +3 more sources

Chlorophyll as key indicator to evaluate astaxanthin accumulation ability of Haematococcus pluvialis

open access: yesBioresources and Bioprocessing, 2019
Background Natural astaxanthin is mainly derived from Haematococcus pluvialis. In the photoinduction phase, astaxanthin accumulation ability can be significantly affected by the characteristics of H. pluvialis cells in the proliferation phase.
Lei Fang   +3 more
doaj   +1 more source

Biofabrication of gold nanoparticles by Shewanella species

open access: yesBioresources and Bioprocessing, 2017
Background Shewanella oneidensis MR-1 (MR-1) and Shewanella xiamenensis BC01 (SXM) are facultative anaerobic bacteria that exhibit outstanding performance in the dissimilatory reduction of metal ions.
Jhe-Wei Wu, I-Son Ng
doaj   +1 more source

The effect of inductive photoperiod on flower formation and phytohormones level in a long day plant Hyoscyamus niger L.

open access: yesActa Societatis Botanicorum Poloniae, 2015
The anatomical and hormonal investigations on a long day plant Hyoscyamus niger L. during the time of the generative photoinduction have been conducted.
J. Kopcewicz   +3 more
doaj   +1 more source

Novel paradigm of light and CO2 feeding to improve the ‎ co-production of ‎astaxanthin and polyunsaturated fatty acids in Haematococcus ‎pluvialis

open access: yesJournal of CO2 Utilization
This study aimed to develop an innovative paradigm of lighting and CO2 flow rate in dilution and photoinduction stages of H. pluvialis cultivation to overcome the cell number reduction and stimulate the astaxanthin and polyunsaturated fatty acids ...
Majid Azizi   +2 more
doaj   +1 more source

Genome-wide Analysis of Seasonal Reproduction in Birds

open access: yesThe Journal of Poultry Science, 2009
Many seasonal breeding animals can estimate the day length (photoperiod) and prepare for breeding in the optimal season. The Japanese quail (Coturnix japonica) is an excellent model for studying photoperiodism because of its rapid and dramatic response ...
Nobuhiro Nakao
doaj   +1 more source

Applications of Photoinductive Imaging

open access: yes, 1990
Photoinductive imaging is a unique dual-mode NDE technique that combines eddy current and thermal wave methods. The photoinductive effect, upon which this method is based, is the thermally induced change in the impedance of an eddy current probe in proximity to a conducting surface that is illuminated with a modulated light source.
Moulder, J.   +4 more
openaire   +3 more sources

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