Results 181 to 190 of about 105,447 (290)

First Insights on Photoreceptor Organ Ultrastructure in Marine Chaetonotida (Gastrotricha): Species of Xenotrichula and Draculiciteria (Xenotrichulidae)

Acta Zoologica, EarlyView.
ABSTRACT Marine gastrotrichs inhabit sediments with limited available light, yet evidence suggests that photoreceptor organs are present throughout the phylum Gastrotricha. Here, we confirm this proposition with ultrastructural descriptions of photoreceptive organs in two species of Xenotrichulidae (Order Chaetonotida) that lack pigmented ocelli ...
Thiago Quintão Araújo, Rick Hochberg
wiley   +1 more source

Environmental changes and their effects on carbon isotope distribution in Lake Plateliai over the past 130 years: insights from sediment organic fractions and diatom assemblages. [PDF]

PLoS One
Barisevičiūtė R, Karosienė J, Kasperovičienė J, Paškauskas R, Jefanova O, Szwarczewski P, Ežerinskis Ž, Butkus L, Šapolaitė J, Mažeika J.   +9 more
europepmc   +1 more source

Palaeoenvironmental evolution of the Baltic Sea basin during the Last Interglacial (Eemian, Mikulino stages): a review

Boreas, EarlyView.
This review presents an investigation of the evolution of the Baltic Sea basin and its connections through the Eemian Stage, based upon sequences of marine and associated deposits from the White Sea to the Southwest Baltic, via the Karelian channel. Pollen analyses, foraminiferal and ostracod analyses provide the evolution of relative sea‐level change,
Philip L. Gibbard, Karen L. Knudsen
wiley   +1 more source

Diatom Analysis in Drowning: A Critical Review of Reliability, Contamination, and Medico-Legal Interpretation. [PDF]

Cureus
Al-Najjar AS, Shata FN, Ba Mhel O, Gutob Y, Alhazmi M, Alharbi Z, Choghari RA, Qashar AA, Basudan B, Aljohani N, Al-Juhani A.   +10 more
europepmc   +1 more source

Late Holocene moisture variability in Arctic Alaska from chitin δ18O

Boreas, EarlyView.
Amplified warming in the Arctic has resulted in reduced sea‐ice extent, which can impact regional climate dynamics. Elucidating past moisture variability in response to changing temperatures and sea‐ice conditions can offer insight into how anthropogenic climate change may impact Arctic areas such as the Alaskan North Slope in the future. We contribute
Briana A. Edgerton, Melissa L. Chipman
wiley   +1 more source

An alternative technique for organelle genome recovery in diatoms using culture-independent, minimal-cell whole genome amplification. [PDF]

PeerJ
Chang ACG, Amaral MWW, Keepers K, Ikudaisi C, Greenwood M, Li J, Hamsher SE, Miller SR, Kociolek JP.   +8 more
europepmc   +1 more source

Red era: Dyeing yak hair fibres red with in situ generated silver nanoparticles using silver nitrate and a flavonoid‐containing plant extract

Coloration Technology, EarlyView.
Abstract Plants and their extracts have been used for dyeing fabrics, skin and hair for thousands of years and have been experiencing a revival in the last years due to increasing health risks arising from oxidative hair dye precursors. We developed a novel two‐step method to dye keratin fibres based on in situ formed silver nanoparticles including a ...
Julia K. Hachmann, Jule M. Sauler, Charlotte Ruhmlieb, Volkmar Vill, Fabian Straske   +4 more
wiley   +1 more source

Dual Fluorescence-Lipid Endpoints Resolve Species- and Metal-Specific Toxicity Patterns in Marine Diatoms. [PDF]

Toxics
Lee H, Han T, Park J.
europepmc   +1 more source

Phycocyanobilin biosynthesis in Galdieria sulphuraria requires isomerization of phycoerythrobilin synthesized by bilin reductases

The FEBS Journal, EarlyView.
The biosynthesis of bilins, tetrapyrroles essential for light harvesting and sensing, is performed by specific enzymes (FDBRs). In Galdieria sulphuraria, both phycobiliprotein types bind phycocyanobilin, despite lacking the canonical synthesizing gene PCYA. Instead, PEBA and PEBB are encoded, producing phycoerythrobilin, proposed to be later isomerized
Federica Frascogna, Nathan C. Rockwell, Jana Hartmann, Julie M. Mudler, Nicole Frankenberg‐Dinkel   +4 more
wiley   +1 more source

Some Bioactive Natural Products from Diatoms: Structures, Biosyntheses, Biological Roles, and Properties: 2015-2025. [PDF]

Mar Drugs
Stonik VA, Stonik IV.
europepmc   +1 more source