Results 171 to 180 of about 480,960 (375)

A hitchhiker's guide to modern, practical cyanobacterial taxonomy

open access: yesJournal of Phycology, EarlyView.
Abstract There has been an explosion of new Cyanobacterial taxa described within the last two decades. Cyanobacteria exhibit incredible ecological versatility and morphological variability, and thousands of species have already been described using “traditional” approaches (e.g., morphological features).
Petr Dvořák   +12 more
wiley   +1 more source

The Effect of Deep Brain Stimulation on Sleep and Cognition in Patients With Parkinson's Disease

open access: yesJournal of Sleep Research, EarlyView.
ABSTRACT Sleep–wake disturbances and cognitive decline are among the most common nonmotor symptoms of Parkinson's disease (PD). Deep brain stimulation (DBS) can successfully alleviate motor symptoms. However, the impact on sleep–wake disturbances and cognitive decline, and their interaction, is yet unclear.
Monique E. H. Valk‐Geuke   +5 more
wiley   +1 more source

The polar-ring galaxies NGC 2685 and NGC 3808B (VV 300) [PDF]

open access: yes
Polar-ring galaxies (PRG) are among the most interesting examples of interaction between galaxies. A PRG is a galaxy with an elongated main body surrounded by a ring (or a disk) of stars, gas, and dust rotating in a near-polar plane (Schweizer, Whitmore,
Reshetnikov, V. P., Yakovleva, V. A.
core   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty   +7 more
wiley   +1 more source

Observations of peculiar galaxies in clusters of galaxies

open access: yesThe Astronomical Journal, 1982
G. D. Bothun, R. A. Schommer
openaire   +1 more source

Unravelling Hidden Trophic Interactions Among Sea Urchin Juveniles and Macroinvertebrates by DNA Amplification

open access: yesMolecular Ecology, EarlyView.
ABSTRACT Rocky reefs may shift between two distinct stable states: productive algal forests, characterised by high abundance and biodiversity of macrofauna, and impoverished barrens, dominated by overgrazing sea urchins. Barren states may persist despite the recovery of adult sea urchin predators, suggesting additional stabilising mechanisms.
Alberto Sutera   +7 more
wiley   +1 more source

Large‐Scale Integrative Taxonomy of the Smallest Insects Reveals Astonishing Temperate Diversity (Hymenoptera: Chalcidoidea: Mymaridae)

open access: yesMolecular Ecology, EarlyView.
ABSTRACT Fairyflies (Hymenoptera: Chalcidoidea: Mymaridae) are a diverse but taxonomically understudied group of parasitoid wasps that attack the eggs of other insects. Being among the very smallest of all insects, they are often ignored in biodiversity surveys despite being one of the most abundant microhymenoptera in many habitats.
Catherine Hébert, Colin Favret
wiley   +1 more source

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