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11 results for “malachite”
Figure 1. Response curves for percent acetyl-coenzyme A in Detecting the effect of ACCase-targeting herbicides on ACCase activity utilizing a malachite green colorimetric functional assay
Figure 1. Response curves for percent acetyl-coenzyme A carboxylase (ACCase) activities of resistant and susceptible Digitaria ciliaris biotypes in response to the increasing concentrations of the ACCase-targeting herbicides, sethoxydim, clethodim,fluazifop-p-butyl, and pinoxaden.The response was modeled based on the log rate of ACCase-targeting herbicides to create equal spacing between rates using least-squares fit regression of ACCase activity to the non-treated check. Means are represented by differing symbols for each biotype, and regression equation models are represented by differing line types for each biotype. Vertical bars represent the standard errors of the means (n = 6). Digitaria ciliaris biotypes: R1 and R2, resistant; S, susceptible. The concentration of ACCase-targeting herbicides required to cause 50% inhibition of ACCase activity (IC50) was calculated from concentration-response curves. CI, confidence interval.
X-ray and ion irradiation effects on azurite, malachite and alizarin pictorial models
<p>XPS was used to analyze X-ray effects on pellets of azurite, malachite and alizarin pure pigments and on azurite and alizarin tempera paint mock-ups, where the pigments were mixed with egg yolk. X-ray radiation damage was assessed by comparing successive high-resolution spectra acquired on the same spot. The spectra of the pure pigments show low radiation sensitivity and reactivity under the selected X-ray irradiation conditions, although some differences among them were detected. Whereas alizarin does not experience surface chemical changes during the prolonged irradiation experiment, a slow progressive chemical reduction of azurite and malachite (copper-based pigments), together with the formation of cuprite, is observed. On the other side, tempera paint mock-ups are sensitive to X-rays and alterations of the egg yolk binding medium are displayed in a shorter time scale than the induced chemical modifications of the pure pigments. Besides, XPS allows to determine that the azurite pigment and the binder interact chemically. Azurite is partially reduced in the tempera paint from the beginning of the irradiation experiment and the subsequent X-ray exposure induces further reduction.</p>
X-ray and ion irradiation effects on azurite, malachite and alizarin pictorial samples
<p>XPS was used to analyze X-ray effects on pellets of azurite, malachite and alizarin pure pigments and on azurite and alizarin tempera paint mock-ups, where the pigments were mixed with egg yolk. X-ray radiation damage was assessed by comparing successive high-resolution spectra acquired on the same spot. The spectra of the pure pigments show low radiation sensitivity and reactivity under the selected X-ray irradiation conditions, although some differences among them were detected. Whereas alizarin does not experience surface chemical changes during the prolonged irradiation experiment, a slow progressive chemical reduction of azurite and malachite (copper-based pigments), together with the formation of cuprite, is observed. On the other side, tempera paint mock-ups are sensitive to X-rays and alterations of the egg yolk binding medium are displayed in a shorter time scale than the induced chemical modifications of the pure pigments. Besides, XPS allows to determine that the azurite pigment and the binder interact chemically. Azurite is partially reduced in the tempera paint from the beginning of the irradiation experiment and the subsequent X-ray exposure induces further reduction</p>
FIG. 3 in Palaeophylolestes distinctus n. gen., n. sp., a new malachite damselfly (Odonata: Zygoptera: Synlestidae) from the Paleocene Menat locality (France)
FIG. 3. — Forewings of selected extant representatives of the Synlestidae Tillyard, 1917: A, Synlestes weyersii Selys Longchamps, 1868 (male; based on photograph by John Tann [Sydney, Australia], CC BY 2.0); B, Megalestes gyalsey Gyeltshen, Kalkman & Orr, 2017 (male; based on Payra et al. 2021: fig. 2F, approximate scale); C, Phylolestes ethelae Christiansen, 1947 (male; based on Garrison et al. 2010: fig. 527). Scale bars: 5 mm.
FIG. 2. — Palaeophylolestes distinctus n. gen., n in Palaeophylolestes distinctus n. gen., n. sp., a new malachite damselfly (Odonata: Zygoptera: Synlestidae) from the Paleocene Menat locality (France)
FIG. 2. — Palaeophylolestes distinctus n. gen., n. sp., holotype specimen (BDL 2002), drawings of wings, isolated (see Fig. 1 for their respective locations; faded vein portions reconstructed); A, B, first pair (located on the left side of the complete specimen); A, forewing; B, hindwing; C, D, second pair (located on the right side of the complete specimen); C, forewing; D, hindwing. Scale bar: 5 mm.
FIG. 1. — Palaeophylolestes distinctus n. gen., n in Palaeophylolestes distinctus n. gen., n. sp., a new malachite damselfly (Odonata: Zygoptera: Synlestidae) from the Paleocene Menat locality (France)
FIG. 1. — Palaeophylolestes distinctus n. gen., n. sp., holotype specimen (BDL 2002), overview; A, drawing; B, photograph (embedding matrix used as white reference). Scale bar: 5 mm.
Malachite and azurite BIRUG 1961
BIRUG 1961: Specimen of azurite (blue) and malachite (green). Despite their different colours, azurite is chemically very similar to malachite; these two minerals comprise the two basic copper (II) carbonate minerals. Because azurite is unstable in open air it is often pseudomorphically replaced by malachite through the addition of water and loss of carbon dioxide. As both minerals occur through weathering of copper ore, they can be used in prospecting as a strikingly colourful surface indicator of the presence of copper ores. The name "azurite" stems from the Persian "lazhward", meaning "blue"; this is the same root as that of the word "azure". "Malachite" derives its name from the Greek "malāchē" meaning "mallow", due to the mineral's perceived similarity to the leaves of the mallow plant. This specimen is part of the Museum's McLean Collection and was digitised with an Artec Spider 3D scanner by Courtney Szanto. Source: Objaverse 1.0 / Sketchfab
Cave Malachite
Specimen and video from Super Minerals on FB. Source: Objaverse 1.0 / Sketchfab
FIGURE 1 in Protomauroania mikhailovi-a new species of malachite beetles (Coleoptera Dasytidae) in Rovno amber
FIGURE 1. Protomauroania mikhailovi sp. n., holotype SIZK, no. L-589: (1) upperside (1); underside (2); head pronotum, upperside (3); lateral view, right (4); head, frontal (5); pronotum, lateral view (8). Scale bars 1–4 – 0.5 mm, 5, 6 – 0.2 mm.
Azurite Malachite
Azurite Malachite for video 140 Pictures, Canon EOS 80D, 35mm, F/16, ISO 100, Agisoft Metashape, Windows 10 Source: Objaverse 1.0 / Sketchfab
Bodhgayā, Bihār. Malachite nodule.
<p>Bodhgayā, Bihār. Malachite nodule. British Museum 1892,1103.73, presented by Alexander Cunningham.</p>
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