CE ÎNSEAMNĂ SPICULE ÎN ENGLEZĂ?
Spicule
Spiculele sunt mici structuri de tip spike, de origine și funcție diferite, care se găsesc în multe organisme, cum ar fi spiculele copulatorii ale anumitor nematode sau boabele de pe piele ale unor broaște. În bureți, spiculele au o funcție structurală. Spiculele sunt o parte foarte importantă a multor organisme.
Definiția spicule în dicționarul Engleză
Definiția spiculei din dicționar este de asemenea numită: spiculum. o mică structură subțire ascuțită sau cristal, în special orice element calcaros sau silicos al scheletului de bureți, corali etc. O altă definiție a spiculei este o ejectare cu gaze fierbinți care se află peste 5000 de kilometri deasupra suprafeței soarelui și având un diametru de aproximativ 1000 de kilometri.
CĂRȚI ÎN ENGLEZĂ ÎN LEGĂTURĂ CU «SPICULE»
Descoperă întrebuințarea
spicule în următoarea selecție bibliografică. Cărți în legătură cu
spicule și extrase din aceasta pentru a furniza contextul de întrebuințare al acestuia în literatura Engleză.
1
Nematology: Advances and Perspectives
11( A), (B)) . Each spicule includes a head (manubrium), shaft and blade ( lamina
) , and sometimes the blade has membranous winglike extensions called the
vellum ( Maggenti, 1981) (Figs 4. 10, 4. 11 (B)). Spicules are mobilized by
protractor ...
Z. X. Chen, S. Y. Chen, Donald Ward Dickson,
2004
The most common type of inorganic skeleton is the spicule skeleton, where
individual cells, singly or in groups of up to four, form discrete spicules. These,
according to their morphology and disposition in the sponge, are termed either ...
Patricia R. Bergquist,
1978
3
The Family Trichodoridae: Stubby Root and Virus Vector Nematodes
37. head; terminal tail cuticle well thickened; spicule shaft without bristles; spicule
length 43-65 um; onchiostyle 44-73 um - Posterior precloacal supplement
posterior to spicule head; terminal tail cuticle not thickened; spicule length 62-74
um ...
4
Sponges of the New Caledonian Lagoon
Preparation. for. spicule. identification. and. histology. Usually sponge
identifications require two forms of preparation: one. a spicule preparation (for
those species with a mineral skeletonl, to determine the structure and geometry
of spicules in ...
5
Skeletal Biomineralization: Pattern, Processes, and ...
Spicules are situated in the fibrous connective tissue direcdy under the epidermis
and are surrounded by a spicule-forming cell (Rieger and Sterrer, 1975b). The
composition of these spicules is unknown. However they dissolve in glutar- ...
6
Molecular Biomineralization: Aquatic Organisms Forming ...
Spicule matrix proteins are also synthesized and secreted by PMCs; thereafter,
the proteins can be found occluded within the mineral phase. The earlier
literature on this subject can be found in the review of Decker and Lennarz (1988
).
7
Microfacies of Carbonate Rocks: Analysis, Interpretation and ...
Further morphological differentiations use the number of points or rays on the
spicule; resulting terms are often characterized by the root 'actine'. Sponge
spicules may show a central canal (Pl. 112/1). Cross sections of calcitized
spicules can ...
8
Fourth European Marine Biology Symposium
Finally, the amounts of sodium bicarbonate added in solutions 7-10 were -too
small to enable spicule production to be detected with certainty. There was
certainly no spicule production in solutions 7-9, but in 10, which only slowly
corrodes the ...
9
The Light and Smith Manual: Intertidal Invertebrates from ...
For example, an important category of spicules consists of monaxons, formed by
growth along a single axis. If growth occurs in a single direction (indicated by the
presence of one point), the spicule is a monactinal monaxon (plates 17A, ...
Sol Felty Light, James T. Carlton,
2007
10
Radiolarians in the Sedimentary Record
Radiolarians grow centrifugally (Haeckel, 1887), either radially starting from an
initial spicule in Entactinaria, or from a micro- or macrosphere in Spumellaria, or
unidirectionally along an axis, starting from the initial spicule and the so-called ...
P. De Wever, P. Dumitrica, J.P. Caulet,
2002
ȘTIRI NOI CARE INCLUD TERMENUL «SPICULE»
Află ce ziare naționale și internaționale au scris despre și cum este întrebuințat termenul
spicule în contextul următoarelor știri.
New Bone-Like Silicon Material Could Bring A Breakthrough In …
However, the researchers said the new silicon spicule material potentially could be used to create medical implants that could better suit the biological systems ... «International Business Times, Iul 15»
Bone-Like Silicon Material May Pave The Way For Implantable …
University of Chicago researchers have developed the first skeleton-like silicon spicules through chemical processes. The material shows promise in improving ... «Tech Times, Iul 15»
BLOG: Why does retinitis pigmentosa take on a bone-spicule shape?
But what of that hallmark finding, the bone spicule? We think of it classically (besides some obscure subtypes) as sine qua non for a retinitis pigmentosa (RP) ... «Healio, Iul 15»
Scientists probe the astonishing engineering of glass sponges
The sponges are able to extract silica acid from seawater and form it into microscopic six-pointed “spicules”, needle-like structures that are woven into an ... «GCR, Mai 15»
Sea Sponge's "Structural Principles" Inspire "Design Strategy"
Each spicule is covered with recurved barbs and has an internal architecture consisting of a solid core of silica surrounded by an assembly of coaxial silica ... «Discovery Institute, Apr 15»
Scientists reveal how a sea sponge gets its remarkable strength
Each spicule is about 10 cm long and covered in backward-facing barbs. Despite being no thicker than a human hair, each spicule has a remarkable load ... «physicsworld.com, Apr 15»
Sea sponges give us a lesson in engineering
The spicules, each only 50 microns in diameter, are made of a silica (glass) core surrounded by 10 to 50 concentric cylinders of glass, and are separated by an ... «RedOrbit, Apr 15»
Glass Anchors Strengthen Sponges and Enlighten Engineers
Those are the anchor spicules (also called basalia spicules), flexible and present in the thousands, whose function should be obvious from their name. They are ... «Scientific American, Apr 15»
Sea sponge stays put thanks to glass 'hair'
The secret to those tiny lifelines, called basalia spicules, lies in their internal structure. The spicules, each only 50 microns in diameter, are made of a silica ... «Futurity: Research News, Apr 15»
Sea sponge anchors are natural models of strength
The spicules, each only 50 microns in diameter, are made of a silica (glass) core surrounded by 10 to 50 concentric cylinders of glass, each separated by an ... «Nanowerk, Apr 15»