Results 51 to 60 of about 70,856 (253)

World's fastest 10 000‐m breakthrough: The XY‐22 well redefines deep‐earth access in the Tarim Basin

open access: yesDeep Underground Science and Engineering, EarlyView.
The Tarim Basin in northwestern China hosts one of the world's deepest petroleum systems, exemplified by the XY‐22 ultra‐deep well (bottom depth: 11 116 m; ~220°C, ~145 MPa). This study integrates tectonic mapping, geological cross‐sections, ultraviolet fluorescence microscopy, and optical photothermal infrared (OPTIR) spectroscopy to characterize ...
Qingwen Tan   +4 more
wiley   +1 more source

Embryonic development of the Mediterranean starfish Hacelia attenuata

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Starfish play essential ecological roles as predators and ecosystem regulators; however, detailed developmental descriptions exist for only a handful of species, none of which are from the Mediterranean Sea. Results In this study, we provide the first full account of the development of the Mediterranean starfish Hacelia attenuata ...
Silvia Caballero‐Mancebo   +3 more
wiley   +1 more source

Identification and differential regulation of microRNAs during thyroid hormone-dependent metamorphosis in Microhyla fissipes

open access: yesBMC Genomics, 2018
Background Anuran metamorphosis, which is obligatorily initiated and sustained by thyroid hormone (TH), is a dramatic example of extensive morphological, biochemical and cellular changes occurring during post-embryonic development.
Lusha Liu   +4 more
doaj   +1 more source

The evolutionary ecology of metamorphosis [PDF]

open access: yes, 2019
Almost all animal species undergo metamorphosis, even though empirical data show that this life-history strategy evolved only a few times. Why is metamorphosis so widespread and why has it evolved?
de Roos, A.M.   +3 more
core   +2 more sources

Compensatory responses to food limitation at metamorphosis in a marine invertebrate: is there temperature modulation? [PDF]

open access: yes, 2020
Under climate change, increased temperatures combined with food limitation may be critical for species with complex life cycles, if high growth rates characterise the larval development.
Luis Giménez   +4 more
core   +1 more source

MIT/TFE family transcription factors, Mitf and Tfec, redundantly promote pigment cell differentiation and retinal epithelium pigmentation in teleosts

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Transcription factors of the MIT/TFE family—mitfa, mitfb, and tfec—play essential roles in specifying pigment cells derived from neural crest cells in vertebrates. In teleosts, which possess multiple pigment cell types, these factors exhibit partially redundant but largely distinct functions across different pigment lineages.
James Lister   +13 more
wiley   +1 more source

Fused deposition modeling process parameter optimization on the development of graphene enhanced polyethylene terephthalate glycol

open access: yesScientific Reports
This study investigates the production of graphene-enhanced polyethylene terephthalate glycol (G-PETG) components using fused deposition modeling (FDM) and evaluates their mechanical properties, contributing to the advancement of additive manufacturing ...
S. Raja   +6 more
doaj   +1 more source

GABA is an inhibitory neurotransmitter in the neural circuit regulating metamorphosis in Ilyanassa obsoleta [PDF]

open access: yes, 2013
The marine mud snail, Ilyanassa obsoleta, displays a biphasic life cycle. The initial phase consists of weakly swimming larval animals with ciliated feeding structures on the head, the velar lobes.
Biscocho, Dhani   +1 more
core  

Human pressure, habitat heterogeneity and species traits jointly determine the level of dark diversity in coastal fish communities

open access: yesEcography, EarlyView.
Understanding how anthropogenic pressures and environmental gradients shape coastal fish communities is a central question in biogeography and marine conservation. Yet, the set of species expected to occur at a site given ecological conditions but being absent – the so‐called dark diversity – has received far less attention than observed species, even ...
Loïc Sanchez   +23 more
wiley   +1 more source

Wood flour / ceramic reinforced polylactic acid based 3D–printed functionally grade structural material for integrated engineering applications: A numerical and experimental characteristic investigation

open access: yesInternational Journal of Lightweight Materials and Manufacture
Recently, efforts have been done to capitalize on the potential of multidisciplinary research in order to produce unique features in polymer technology.
Arunkumar Thirugnanasamabandam   +5 more
doaj   +1 more source

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