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Matthieu Pilaud - Paris - artiste
Matthieu Pilaud a été formé à l'Ecole des Beaux-Arts de Paris. Sa pratique s'articule autour de la métamorphose de l'objet et de son caractère polymorphe. Ses œuvres sont construites selon un rapport tantôt sérieux, tantôt ludique, tantôt factuel à la forme et à sa composante. Son parcours est ponctué d'expositions en France et à l'étranger (Belgrade, Mumbaï, Xi'an...)
A species which is variable in flower colour and leaf spotting. Cambourne seems to have almost the full range of colour combinations.
Les euphorbes (Euphorbia L.), nom féminin, sont des plantes dicotylédones de la famille des Euphorbiacées. Elles possèdent des inflorescences particulières nommées cyathes, particularité que les euphorbes partagent seulement avec quelques genres voisins. Comme toutes les Euphorbiaceae, ce sont des plantes toxiques, qui possèdent un latex parfois très irritant. Il s'agit d'un genre extrêmement polymorphe, possédant des espèces aux tiges nues et plus ou moins fines et aux feuilles normalement développées et à développement rapide (sous-genre Esula et Chamaesyce ) ; d'autres sont, à l'opposé, succulentes, similaires aux cactus, avec des feuilles souvent très réduites et possédant de puissantes épines ou non (sous-genre Athymalus (ex Rhizanthium) et sous-genre Euphorbia). Elles sont herbacées ou ligneuses selon les espèces. Selon Pline l'Ancien1, le mot euphorbia proviendrait d’euphorbium, le nom donné par le roi et érudit berbère Juba II de Maurétanie, en l'honneur de son médecin grec Euphorbus, à la drogue médicinale faite à partir du latex de l'espèce aujourd'hui nommée Euphorbia resinifera. Il existe environ 2 000 espèces d'euphorbes, certaines tropicales et très différentes des euphorbes européennes par leur aspect général ; quelques-unes ont même la forme de cactus. Leur principal point commun est la production de latex, liquide blanc qui apparaît à la cassure et qui est très toxique. (Wiki)
[Camponotus Mayr 1861: 1,083+†29 spp (41.2-0.0 mya)]
Camponotus is an extremely large and complex, globally distributed genus. At present, nearly 500 sspp belonging to 45 sgg have been described and it could well be the largest ant genus of all. The enormous species richness, high levels of intraspecific and geographic variation and polymorphism render the taxonomy of Camponotus one of the most complex and difficult. Revisionary studies are generally confined to species groups and/or small geographical regions. These ants live in a variety of habitats and microhabitats and the sheer size of the genus makes any characterisation of their biology challenging. Nests are built in the ground, in rotten branches or twigs, or rarely into living wood and most spp possess a highly generalistic diet.
REFERENCES
Acleris emargana - Notch-wing Button 3559
Acleris effractana (Hübner, 1799) replaces Acleris emargana, a European species
Wingspan ~19mm
F#3824
RWWA-3825 BOLD DNA All matches from 96-99.2% for Acleris (formally Pyralis) emargana (Fabricius 1775) or cf. A. emargana and a couple for Acleris effractana (Hübner, 1799). DNA has shown Acleris emargana is found from Europe to Siberia, northern China, Korea and Japan and in North America. A. effractana seems to be used as the North American species contrary to DNA indicating A. emargana in NA plus A. effractana is found in Europe also. The data strongly suggests A. emargana and A. effractana are synonyms of a species which exhibits a high degree of polymorphism like certain other tortricids.
www.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxon=...
www.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxon=...
Collection Locality: Coastal SW Washington State at the edge of Willapa Bay geo:lat=46 37.273 geo:lon=-123
NWA 8785
Enstatite chondrites EL3
Northwest Africa
Found: 2014
TKW: 63,5 g / OBJ: 0,04 g
History: Purchased by Fabien Kuntz in January 2014 from a dealer in Rissani, Morocco.
Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, spherical chondrules are set in a dark, deep red-brown matrix (~40 vol.%). Minerals are orthopyroxene, forsterite, silica polymorph (with enstatite in chondrules), kamacite, troilite (some Cr-bearing), Al-Ti-bearing diopside, schreibersite and minor calcite and gypsum (probably representing altered oldhamite). No CAI were found.
Geochemistry: Olivine (Fa0.2-1.0, Cr2O3 = 0.01-0.28 wt.%, mean 0.15±0.09 wt.%, N = 18), orthopyroxene (Fs0.1-14.9Wo0.1-2.6, N = 17), diopside (Fs0.4-0.5Wo42.9-42.1, Al2O3 6.9-7.5 wt.%, TiO2 1.2-1.0 wt.%, N = 2), metal (Si 0.7 wt.%, Ni 7.1 wt.%, Co 0.5 wt.%, N = 2). Oxygen isotopes (K. Ziegler, UNM): analyses of four acid-washed subsamples by laser fluorination gave, respectively, δ17O 3.180, 2.880, 2.996, 2.922; δ18O 6.042, 5.707, 5.820, 5.849; Δ17O -0.010, -0.133, -0.077, -0.166 (all per mil).
Classification: Enstatite chondrite (EL3). Matrix is unusually abundant for an enstatite chondrite.
Specimens: 12.86 g including one polished thin section at PSF; main mass with Kuntz.
Champignon : d'abord identifié comme géoglosse glabre (geoglossum glabrum), n'est-ce pas plutôt xylaire polymorphe ?
The 56 Full Sized Morphs Are:
01 Blaze a Trail | 02 Pearly King Morph | 03 The Messenger Morph | 04 The Power of Morphing Communication | 05 Morph Over, There's Room for Two! | 06 Morph into the Piñataverse | 07 Morpheus | 08 Apart Together | 09 London Parklife | 10 On Guard | 11 Mr Create | 12 Morph's Inspirational Dungarees | 13 Cactus Morph | 14 Forget-Me-Not | 15 Gingerbread Morph I 16 Totally Morphomatic! | 17 Dance-off Morph I 18 The Bard I 19 Mondrian Morph | 20 Morph Whizz Kidz Argonaut | 21 It's Raining Morphs! Halleujah! | 22 Messy Morph | 23 I Spy Morph | 24 Astromorph | 25 Make Your Mark | 26 Roll With It | 27 Morph and Friends Explore London | 28 Tartan Trailblazer | 29 London Collage | 30 Peace Love and Morph | 31 Midas Morph | 32 Freedom | 33 Good Vibes | 34 Tiger Morph | 35 Maximus Morpheus Londinium | 36 Chocks Away! | 37 Morph! It's the Wrong Trousers! | 38 Diverse-City | 39 Apples and Pears | 40 Morphlowers Please! | 41 Cyborg Morph | 42 Pride Morph | 43 The London Man | 44 Looking After the Ocean | 45 Rock Star! | 46 Wheelie | 47 Gentlemorph | 48 Polymorphism | 49 Whizz Bang! | 50 Stay Frosty | 51 Mmmmmmmoprh! | 52 Swashbuckler | 53 Morph Target | 54 Canary Morph | 55 Morph the Yeoman Guard | 56 Fish Ahoy!
The 23 Mini Morphs Are:
01 Neville | 02 Messy Morph | 03 Meta-MORPH-osis | 04 Morley the Morph - Ready to Board | 05 Near and Far | 06 Bright Ideas | 07 Creativity Rocks! | 08 Growing Together | 10 Many Hands Make Valence | 11 Mr. Tayo Shnubbub 'The Wellbeing Hero' | 12 Captain Compass I 13 Hands-On & Hands-Up | 14 This is Us | 15 The Adventures of Morph | 16 Our School | 17 Riverside Spirit | 18 Morpheby | 19 GRIT | 20 Happiness is an Inside Job | 21 Growing Together in Learning and in Faith | 22 Look for the Light I 23 Bringing Great Energy and Spirit to Make Things Happen
NWA 8785
Enstatite chondrites EL3
Northwest Africa
Found: 2014
TKW: 63,5 g / OBJ: 0,04 g
History: Purchased by Fabien Kuntz in January 2014 from a dealer in Rissani, Morocco.
Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, spherical chondrules are set in a dark, deep red-brown matrix (~40 vol.%). Minerals are orthopyroxene, forsterite, silica polymorph (with enstatite in chondrules), kamacite, troilite (some Cr-bearing), Al-Ti-bearing diopside, schreibersite and minor calcite and gypsum (probably representing altered oldhamite). No CAI were found.
Geochemistry: Olivine (Fa0.2-1.0, Cr2O3 = 0.01-0.28 wt.%, mean 0.15±0.09 wt.%, N = 18), orthopyroxene (Fs0.1-14.9Wo0.1-2.6, N = 17), diopside (Fs0.4-0.5Wo42.9-42.1, Al2O3 6.9-7.5 wt.%, TiO2 1.2-1.0 wt.%, N = 2), metal (Si 0.7 wt.%, Ni 7.1 wt.%, Co 0.5 wt.%, N = 2). Oxygen isotopes (K. Ziegler, UNM): analyses of four acid-washed subsamples by laser fluorination gave, respectively, δ17O 3.180, 2.880, 2.996, 2.922; δ18O 6.042, 5.707, 5.820, 5.849; Δ17O -0.010, -0.133, -0.077, -0.166 (all per mil).
Classification: Enstatite chondrite (EL3). Matrix is unusually abundant for an enstatite chondrite.
Specimens: 12.86 g including one polished thin section at PSF; main mass with Kuntz.
The Meadow Brown, Maniola jurtina, is a butterfly found in European meadows, where its larvae feed on grasses, such as Sheep's Fescue.
Similar are the Gatekeeper (which prefers to rest with its wings open) and Small Heath (which is smaller).
There is marked sexual dimorphism in this species. Males are less colorful, with smaller eyespots and much reduced orange areas on the upper forewings. They are also much more active and range far about, while females fly less and often may not away from the area where they grew up.
A variable number of smaller eyespots is usually found on the hindwing underside - up to six on each wing. The factors that govern polymorphism in this trait are not resolved, although several theories have been proposed. On the other hand, the evolutionary significance of the upperwing eyespots is more obvious: The more active males have a markedly more cryptic upperside pattern, whereas the females have more often opportunity to present their eyespots in a sudden display of colors and patterns that presumably make some predators hesitate so that the butterfly has better chances of escaping.
(Wikipedia)
C'est un lézard de forme élancée, espèce extrêmement polymorphe, avec une variabilité extraordinaire de l'écaillure, une coloration très variable, brun, gris ou même verdâtre. La face ventrale est claire, jaune, bleu ou rougeâtre. La gorge est mouchetée de noir. Le mâle mesure 20 cm, exceptionnellement 25 cm, la femelle 18 cm. On ne peut pas déterminer son sexe tant qu'il n'a pas atteint la maturité. La queue de ce lézard casse facilement (autotomie), lui permettant ainsi d'échapper à des prédateurs. En effet, l'extrémité « perdue » continue à s'agiter ce qui constitue un leurre vis-à-vis de l'attaquant. Une queue de remplacement repousse progressivement mais elle est dépourvue d'écailles, et elle est uniformément gris sombre. Parfois elle peut repousser double. On peut observer ce lézard toute l'année dans le sud de la France.
A species which is variable in flower colour and leaf spotting. Cambourne seems to have almost the full range of colour combinations.
Graphite with pyrite nodule from Ceylon (Sri Lanka).
A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 5900 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.
Elements are fundamental substances of matter - matter that is composed of the same types of atoms. At present, 118 elements are known (four of them are still unnamed). Of these, 98 occur naturally on Earth (hydrogen to californium). Most of these occur in rocks & minerals, although some occur in very small, trace amounts. Only some elements occur in their native elemental state as minerals.
To find a native element in nature, it must be relatively non-reactive and there must be some concentration process. Metallic, semimetallic (metalloid), and nonmetallic elements are known in their native state.
The element carbon principally occurs in its native state as the minerals graphite (C) and diamond (C). Graphite is the common & far less valuable polymorph of carbon. Graphite has a metallic luster and a silvery-gray color. It is very soft (H = 1), has a slick, greasy feel, and readily marks paper. Graphite does have cleavage, but it is not apparent at the hand specimen scale. The ability of graphite to mark paper, its softness, and its greasy feel are all a consequence of cleavage sheets easily slipping over each other on a microscopic scale.
Locality: unrecorded / undisclosed site in Ceylon / Sri Lanka (attributed to "Colombo")
A butterfly is a mainly day-flying insect of the order Lepidoptera, the butterflies and moths. Like other holometabolous insects, the butterfly's life cycle consists of four parts: egg, larva, pupa and adult. Most species are diurnal. Butterflies have large, often brightly coloured wings, and conspicuous, fluttering flight. Butterflies comprise the true butterflies (superfamily Papilionoidea), the skippers (superfamily Hesperioidea) and the moth-butterflies (superfamily Hedyloidea). All the many other families within the Lepidoptera are referred to as moths.
Butterflies exhibit polymorphism, mimicry and aposematism. Some, like the Monarch, will migrate over long distances. Some butterflies have evolved symbiotic and parasitic relationships with social insects such as ants. Some species are pests because in their larval stages they can damage domestic crops or trees; however, some species are agents of pollination of some plants, and caterpillars of a few butterflies (e.g., Harvesters) eat harmful insects. Culturally, butterflies are a popular motif in the visual and literary arts.
Pentax K10D - 1/125 - f/11 - 200 mm - ISO: 200.
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Papilionoidea
Family: Nymphalidae
Subfamily: Satyrinae
Tribe: Satyrini.
La "loba" es una mariposa común en los prados europeos, donde sus larvas se alimentan de hierba. Hay un marcado dimorfismo sexual en esta especie. Los machos son menos coloridos, conmanchas más pequeñas y áreas anaranjadas muy reducidas en la parte superior de las alas. Son también mucho más activos y se alejan más r, mientras que las hembras vuelan menos y no pueden desplazarse muy lejos del área donde crecieron.Un número variable de pequeñas manchas claras más pequeñas aparecen generalmente en las superficies inferiores de las alas. Éstas pueden llegar a ser hasta 12 en algún ejemplar individual, con 6 en cada ala. Los factores que gobiernan éste polimorfismo no se han resuelto aun. En el caso se las manchas superiores la explicación puede ser más sencilla: Los machos más activos tienen un dibujo más completo, mientras que las hembras exhiben sus colores repentinamente como herramienta de disuasión momentánea de los depredadores.
The Meadow Brown (Maniola jurtina) is a butterfly found in European meadows, where its larvae feed on grasses. There is marked sexual dimorphism in this species. Males are less colorful, with smaller eyespots and much reduced orange areas on the upper forewings. They are also much more active and range far about, while females fly less and often may not away from the area where they grew up. A variable number of smaller eyespots are usually found on the hindwing undersides. These may number up to 12 per individual butterfly, with up to 6 on each wing. The factors that govern polymorphism in this trait are not resolved, although a number of theories have been proposed (Stevens 2005). On the other hand, the evolutionary significance of the upperwing eyespots is more obvious: The more active males have a markedly more cryptic upperside pattern, whereas the females have more often opportunity to present their eyespots in a sudden display of colors and patterns that presumably make neophobic predators hesitate so that the butterfly has better chances of escaping.
Thanks Wikipedia
(crack surface)
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A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 6000 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.
The sulfide minerals contain one or more sulfide anions (S-2). The sulfides are usually considered together with the arsenide minerals, the sulfarsenide minerals, and the telluride minerals. Many sulfides are economically significant, as they occur commonly in ores. The metals that combine with S-2 are mainly Fe, Cu, Ni, Ag, etc. Most sulfides have a metallic luster, are moderately soft, and are noticeably heavy for their size. These minerals will not form in the presence of free oxygen. Under an oxygen-rich atmosphere, sulfide minerals tend to chemically weather to various oxide and hydroxide minerals.
Marcasite is an iron sulfide mineral, FeS2, which is the same chemical formula as pyrite. Different minerals having the same chemical formula are called polymorphs. Other examples of polymorphs are graphite-diamond (both C) and calcite-aragonite (both CaCO3). Pyrite and marcasite both have a metallic luster, a brassy gold color, and a dark gray to black streak. They both lack cleavage, and they have the same hardness (H = 6 to 6.5). Marcasite tends to have a paler brass color than pyrite. Some marcasites are almost silvery-colored.
How does one visually distinguish marcasite from pyrite? Apart from color, marcasite crystals are typically plates, or sharp & pointed, and marcasite tends to twin, resulting in cockscomb masses (www.mindat.org/photo-408969.html). Marcasite also more readily breaks down into whitish powder (FeSO4).
Pyrite can convert to marcasite naturally, and vice versa. Pyrite concretions may have preserved needle-shaped crystals of marcasite, but the marcasite is gone. X-ray analysis may be needed to determine which polymorph is present.
Stratigraphy: possibly / probably derived from the Ohio Shale (Upper Devonian)
Locality: central Ohio, USA
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Photo gallery of marcasite:
–carretón común, mancaperros–
= M. hispida Gaertn.
= M. lappacea Desr.
= M. polymorpha subsp. polycarpa (Willd.) Romero Zarco
Vegetación arvense, ruderal y viaria, 0–1500 m.a. Subcosmopolita. Presente en todo el territorio.
Fig. 1. Bands produced by two 10-bp Operon primers on a subset of 29 R 2 lines chosen from 436 lines. Primers were OPD-02 (a), and OPU-09 (b). Key: M = 1-kb ladder, C: Hwaseongbyeo, R 2 : 29 R
2 lines. Bands showing polymorphism between R 2 line and Hwaseongbyeo are shown by lines on the right.
books.google.com.ph/books/irri?id=331tQMnExkEC&pg=PA4...
Part of the image collection of the International Rice Research Institute (IRRI)