Results 101 to 110 of about 32,315 (206)

Do predators always win? Starfish versus limpets. A hands-on activity examining predator-prey interaction [PDF]

, 2011
In this article we propose a hands-on experimental activity about predator–prey interactions that can be performed both in a research laboratory and in the classroom.
Boaventura, Diana, Chagas, Isabel, Faria, Cláudia, Galvão, Cecília   +3 more
core  

Four New Sulfated Polar Steroids from the Far Eastern Starfish Leptasterias ochotensis: Structures and Activities

Marine Drugs, 2015
Three new sulfated steroid monoglycosides, leptaochotensosides A–C (1–3), and a new sulfated polyhydroxylated steroid (4) were isolated from the alcoholic extract of the Far Eastern starfish Leptasterias ochotensis.
Timofey V. Malyarenko, Olesya S. Malyarenko (Vishchuk), Natalia V. Ivanchina, Anatoly I. Kalinovsky, Roman S. Popov, Alla A. Kicha   +5 more
doaj   +1 more source

Review of the Crown-of-thorns Starfish Research Committee (COTSREC) Program [PDF]

, 1995
In December 1988, following criticism in the media of the Great Barrier Reef Marine Park Authority's handling of the crown-of-thorns starfish (COTS) issue, the then Minister for the Arts, Sport, the Environment, Tourism and Territories, Senator the ...
Ayukai, T., Engelhardt, U., Lassig, B.R., Moran, P.J.   +3 more
core  

Starfish cataract

Indian Journal of Ophthalmology, 2020
Surbhi Khurana, Parul C Gupta, Jagat Ram
openaire   +3 more sources

Oocyte Maturation in Starfish

Cells, 2020
Oocyte maturation is a process that occurs in the ovaries, where an immature oocyte resumes meiosis to attain competence for normal fertilization after ovulation/spawning. In starfish, the hormone 1-methyladenine binds to an unidentified receptor on the plasma membrane of oocytes, inducing a conformational change in the heterotrimeric GTP-binding ...
openaire   +3 more sources

Nasa schedules launch of radiation-detection satellite this month [PDF]

, 1964
Energetic Particle Explorer satellite probe of particles in Van Allen radiation ...

core   +1 more source

Rare Ophiuroid-Type Steroid 3β,21-, 3β,22-, and 3α,22-Disulfates from the Slime Sea Star Pteraster marsippus and Their Colony-Inhibiting Effects against Human Breast Cancer Cells

Marine Drugs
Two new steroid 3β,21-disulfates (1, 2) and two new steroid 3β,22- and 3α,22-disulfates (3, 4), along with the previously known monoamine alkaloid tryptamine (5) were found in the ethanolic extract of the Far Eastern slime sea star Pteraster marsippus ...
Alla A. Kicha, Timofey V. Malyarenko, Alexandra S. Kuzmich, Olesya S. Malyarenko, Anatoly I. Kalinovsky, Roman S. Popov, Dmitriy K. Tolkanov, Natalia V. Ivanchina   +7 more
doaj   +1 more source

MorphoNet 2.0: An innovative approach for qualitative assessment and segmentation curation of large-scale 3D time-lapse imaging datasets

eLife
Thanks to recent promising advances in AI, automated segmentation of imaging datasets has made significant strides. However, the evaluation and curation of 3D and 3D+t datasets remain extremely challenging and highly resource-intensive.
Benjamin Gallean, Tao Laurent, Kilian Biasuz, Ange Clement, Noura Faraj, Patrick Lemaire, Emmanuel Faure   +6 more
doaj   +1 more source

New Polyhydroxysteroid Glycosides with Antioxidant Activity from the Far Eastern Sea Star Ceramaster patagonicus

Marine Drugs
Four new glycosides of polyhydroxysteroids, ceramasterosides A, B, D, and E (1–4), and two previously known compounds, ceramasteroside C1 (5) and attenuatoside B-I (6), were isolated from an extract of a deep-sea sea star species, the orange cookie star ...
Timofey V. Malyarenko, Viktor M. Zakharenko, Alla A. Kicha, Arina I. Ponomarenko, Igor V. Manzhulo, Anatoly I. Kalinovsky, Roman S. Popov, Pavel S. Dmitrenok, Natalia V. Ivanchina   +8 more
doaj   +1 more source

Progress update of NASA's free-piston Stirling space power converter technology project [PDF]

A progress update is presented of the NASA LeRC Free-Piston Stirling Space Power Converter Technology Project. This work is being conducted under NASA's Civil Space Technology Initiative (CSTI).
Alger, Donald, Dudenhoefer, James E., Winter, Jerry M.   +2 more
core   +1 more source