Results 31 to 40 of about 1,092 (169)

Kinetic Resolution with a Polymer-Supported Resolving Agent

open access: yesCHIMIA, 1981
When contacting an insoluble copolymer functionalized by (+)-alpha-methylbenzylamine with a resin-swelling solvent containing racemic mandelic acid, the fixation of acid in the solid phase is observed to be partial and stereoselective.
J.-M. Coisne, J. Pecher
doaj   +1 more source

Return migration to fresh water and overwintering locations used by sympatric anadromous populations of Arctic char (Salvelinus alpinus) and Dolly Varden (Salvelinus malma malma)

open access: yesJournal of Fish Biology, EarlyView.
Abstract Anadromous Arctic char (Salvelinus alpinus) and northern form Dolly Varden (Salvelinus malma malma) are highly valued by Indigenous communities in northern Canada. Rapid, ongoing environmental changes are affecting populations of both of these iteroparous species, and understanding variability in life‐history tactics is essential for ...
Rosie Smith   +8 more
wiley   +1 more source

Low regularity well-posedness for the one-dimensional Dirac-Klein-Gordon system

open access: yesElectronic Journal of Differential Equations, 2006
Local well-posedness for Dirac-Klein-Gordon equations is proven in one space dimension, where the Dirac part belongs to $H^{-frac{1}{4}+epsilon}$ and the Klein-Gordon part to $H^{frac{1}{4}-epsilon}$ for 0 less than epsilon less than 1/4, and global ...
Hartmut Pecher
doaj  

Hybrid lernen mit H5P: Eine Analyse des Inhaltstyps „Dehnung und Verdoppelung“ im Vergleich mit Schulbuchmaterial

open access: yesMedienimpulse
H5P (HTML5 Package) ist ein Open-Source-Format zur Erstellung interaktiver, browserbasierter Lerninhalte und wird zunehmend in schulischen Kontexten genutzt.
Helmut Pecher
doaj   +1 more source

Surgical tagging of Atlantic mackerel (Scomber scombrus): electroanaesthesia and survival in captivity and the field

open access: yesJournal of Fish Biology, EarlyView.
Abstract Electroanaesthesia using electric fish handling gloves induced rapid and reversible sedation of Atlantic mackerel (Scomber scombrus) during surgical tagging without observable adverse effects on behaviour or tag retention. In the laboratory, survival analyses revealed that longer handling times and smaller body sizes significantly reduced ...
Caliyena R. Brown   +4 more
wiley   +1 more source

Metagenomic Insights Into the Diversity of Halophilic Microorganisms Indigenous to the Karak Salt Mine, Pakistan

open access: yesFrontiers in Microbiology, 2020
Hypersaline regions are terrestrial analogs of the Earth’s primitive ecosystem and extraterrestrial environment. The salt range in Pakistan is considered among a few of the ancient salt deposits in the subcontinent.
Leena Mavis Cycil   +7 more
doaj   +1 more source

"Tinea Nigra" no Amazonas [PDF]

open access: yesActa Amazonica, 1971
Sinopse Os autores descrevem um caso de Tinea Nigra localizado sôbre um hemangioma plano, na palma da mão direita de uma paciente que tinha, concomitantemente, Estrófula alimentar.
Ozório José de Menezes Fonseca   +1 more
doaj   +1 more source

Effects of Increased Water Salinity and Temperature on the Development of Rainbow Trout Fry Syndrome (RTFS) Caused by Flavobacterium psychrophilum

open access: yesJournal of Fish Diseases, Volume 49, Issue 2, February 2026.
ABSTRACT Flavobacterium psychrophilum, the etiological agent of Rainbow Trout Fry Syndrome (RTFS) and Bacterial Coldwater Disease (BCWD), causes varying degrees of disease and mortality in salmonid aquaculture worldwide. Because its treatment relies on the use of antimicrobials, alternative interventions are of environmental and economic interest.
Valentina L. Donati   +2 more
wiley   +1 more source

Linking oceanic variability, euphausiid hotspot persistence, and marine predator distribution along Canada's west coast

open access: yesEcological Applications, Volume 36, Issue 1, January 2026.
Abstract Understanding patterns of habitat use across trophic levels and the physical drivers of multispecies aggregations is essential to inform ecosystem‐based management. To achieve this, we quantified the spatial distribution and co‐occurrence of hotspots (defined using the Getis‐Ord statistic) for euphausiids and nine of their commercially ...
Rhian Evans   +6 more
wiley   +1 more source

They're Out There, You Know: Sea Turtle Sightings and Strandings in Canadian Pacific Waters

open access: yesEcology and Evolution, Volume 16, Issue 1, January 2026.
A comprehensive summary of all known sea turtle occurrences in Canadian Pacific (British Columbia, BC) waters from 1931 to 2024, including demographics, spatiotemporal distribution, and pathologic findings. The dataset contains sightings of 247 sea turtles from four species, including the first five records of olive ridley sea turtles (Lepidochelys ...
Lisa Spaven   +7 more
wiley   +1 more source

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