Results 61 to 70 of about 39,586 (243)

The Effect of Acidic and Alkaline Seawater on the F-Actin-Dependent Ca2+ Signals Following Insemination of Immature Starfish Oocytes and Mature Eggs

open access: yesCells, 2023
In starfish, the addition of the hormone 1-methyladenine (1-MA) to immature oocytes (germinal vesicle, GV-stage) arrested at the prophase of the first meiotic division induces meiosis resumption (maturation), which makes the mature eggs able to respond ...
Nunzia Limatola   +5 more
doaj   +1 more source

Membrane Engineering for Battery Systems: Bridging Design Principles and Frontier Applications

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The review emphasizes membrane separators' role in battery performance and safety, covering redox flow, lithium‐ion, and solid‐state batteries. It reviews advances in membrane materials (e.g., polymer electrolytes, hybrid composites) and ion transport mechanisms, while addressing challenges like dendrite growth and crossover losses.
Xiaoqun Zhou   +3 more
wiley   +1 more source

Evaluation of the effects of diethyl ether and methanol extracts of carpet anemone (Sarcophyton spp.) and starfish (Pentaceraster spp.) on E. coli and Bacillus subtilis bacteria

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2019
Marine environment is the main source of natural bioactive products whose chemical-structural properties are not similar with other natural products of plants and other inland organisms. The present study was carried out to evaluate antibiotic properties
M. Mansurlakuraj; K. Rezaei Tavabe; A.R. Mirvaghefi; M. Nazemi; M.A. Nematollahi; M. Jahandideh
doaj  

New Rare Triterpene Glycosides from Pacific Sun Star, Solaster pacificus, and Their Anticancer Activity

open access: yesMarine Drugs, 2023
Six previously unknown triterpene glycosides, pacificusosides L–Q (1–6), and two previously known triterpene glycosides, cucumariosides B1 (7) and A5 (8), were isolated from an alcoholic extract of Pacific sun star, Solaster pacificus.
Timofey V. Malyarenko   +8 more
doaj   +1 more source

Chromosomes of Japanese Starfishes [PDF]

open access: yesZoological Science, 2002
We developed a method for preparing starfish chromosomes from embryos. Blastulae were treated with colchicine (0.2-4.0 mg/ml), dissociated into single blastomeres by pippeting, swollen with 7% sodium citrate, and fixed with methanol: acetic acid (3:1). The fixed cells were dropped on a slide and air-dried.
Kyoko, Saotome, Mieko, Komatsu
openaire   +2 more sources

Advances in Double‐Stranded DNA Targeting Technologies

open access: yesExploration, EarlyView.
Double‐stranded DNA (dsDNA) plays a crucial role in genetic information storage and disease management, but its inherent stability limits access to internal bases. To overcome this challenge, various high‐specificity molecular targeting technologies have been developed to destabilize the DNA structure.
Zuhao Shen   +8 more
wiley   +1 more source

Ocean Warming Amplifies the Effects of Ocean Acidification on Skeletal Mineralogy and Microstructure in the Asterinid Starfish Aquilonastra yairi

open access: yesJournal of Marine Science and Engineering, 2022
Ocean acidification and ocean warming compromise the capacity of calcifying marine organisms to generate and maintain their skeletons. While many marine calcifying organisms precipitate low-Mg calcite or aragonite, the skeleton of echinoderms consists of
Munawar Khalil   +3 more
doaj   +1 more source

Rapid behavioral transitions produce chaotic mixing by a planktonic microswimmer

open access: yes, 2018
Despite their vast morphological diversity, many invertebrates have similar larval forms characterized by ciliary bands, innervated arrays of beating cilia that facilitate swimming and feeding.
Gilpin, William   +2 more
core   +1 more source

Nucleation of Pb starfish clusters on the five-fold Al-Pd-Mn quasicrystal surface [PDF]

open access: yes, 2009
The nucleation of Pb clusters on the five-fold Al-Pd-Mn quasicrystal surface has been investigated using scanning tunneling microscopy (STM) and ab initio calculations based on density-functional theory (DFT).
Fournée, V.   +9 more
core   +4 more sources

Projected Warming of the Southern Ocean Disrupts Embryonic Development and Hatch Timing in Antarctic Fish

open access: yesGlobal Change Biology Communications, EarlyView.
Embryos are particularly sensitive to thermal challenge. Antarctic fish embryos raised at projected Southern Ocean temperatures hatch during the winter, have a high incidence of morphological abnormalities, have shorter body lengths, and express genes indicative of cellular stress.
Margaret Streeter   +6 more
wiley   +1 more source

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