Results 21 to 30 of about 6,219,327 (281)

A CRISPR/Cas12a-based DNAzyme visualization system for rapid, non-electrically dependent detection of Bacillus anthracis

open access: yesEmerging Microbes and Infections, 2022
As next-generation pathogen detection methods, CRISPR-Cas-based detection methods can perform single-nucleotide polymorphism (SNP) level detection with high sensitivity and good specificity.
Dongshu Wang   +8 more
doaj   +1 more source

CHANGES IN THE COLOUR OF BUTTERFLIES [PDF]

open access: yesThe Canadian Entomologist, 1902
While studying the specializations of the wing in the Papilionides, the general results of which are published in the Proc. Am. Philosophical Society, Jan., 1899, I found that Iphiclides, Ajax, Marcellus, etc., differed so strongly from the type of Turnus as to be generically separable. Ajax is, in fact, allied to species having a greenish or yellowish
openaire   +2 more sources

Colour change and camouflage in juvenile shore crabs Carcinus maenas

open access: yesFrontiers in Ecology and Evolution, 2014
Camouflage is perhaps the most widespread anti-predator defense in nature, with many different types thought to exist. Of these, resembling the general color and pattern of the background (background matching) is likely to be the most common.
Martin eStevens   +2 more
doaj   +1 more source

Visual evoked potentials to colour change of a moving bar

open access: yesFrontiers in Human Neuroscience, 2014
In our previous study we found that it takes less time to detect colour change in a moving object compared to colour change in a stationary one (Kreegipuu et al., 2006, Vision Research 46(11), 1848-1855).
Carolina eMurd   +10 more
doaj   +1 more source

Neural correlates of colour categories [PDF]

open access: yes, 2007
This study used an electrophysiological marker of visual detection to investigate adults' processing of colour difference. Event-related potentials were collected from the identical colour (green: G0) presented as the frequent or infrequent stimulus ...
Davidoff, Jules B.   +3 more
core   +1 more source

The influence of formulating a damping solution on dot gain

open access: yesMokslas: Lietuvos Ateitis, 2010
Difference in dot gain using various additives to the damping solution was investigated on two offset web presses. Dot gain was measured using a densitometer and calculated considering CIE L*a*b* coordinates.
Povilas Mikalainis   +2 more
doaj   +1 more source

Analysis of the Colour Change in Composite Resins When Exposed to Colouring Agents Possible to Be Found in the Oral Cavity

open access: yesMedical Sciences Forum, 2023
Currently, composite resins are widely used as aesthetic restorative materials. The success of any aesthetic restoration depends on the stability of the material’s colour.
Sara Salgueiro   +4 more
doaj   +1 more source

Transcriptomic analysis identifies differentially expressed genes in purple tender shoots and green mature leaves of Zijuan tea

open access: yesCzech Journal of Food Sciences, 2022
Purple shoots of tea germplasm Zijuan (Camellia sinensis var. asssamica) have high anthocyanin content and gradually turn green with continued growth and development.
Bin Jiang   +6 more
doaj   +1 more source

Light fastness of printing inks: A review

open access: yesJournal of Graphic Engineering and Design, 2018
Light fastness, in its broadest sense, is the resistance of colours to fading under the influence of a light source. Light fastness is one of the most important physical, and therefore visual, properties sought in both pigments and in the inks ...
Cem Aydemir, Semiha Yenidoğan
doaj   +1 more source

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