Sectility

Schneewelss, n. snow white (zinc white), schneidbar, a. capable of being cut, sectile, scis-sile. 

What is it about gold that makes it so attractive and so useful Gold is not very hard a knife can easily scratch pure gold and it is very heavy or even dense for a metallic mineral. Some of the other characteristics of gold are ductility, malleability and sectility, meaning it can be stretched into a wire, pounded into other shapes, and cut into slices. Gold is the most ductile and malleable element on our planet. It is a great metal for jewellery because it never tarnishes. 

Horn quicksilver—subchloride of mercury, or native ealome]—is found associutsd with the other ores of quicksilver at Idria, at Deux-Ponts, in Spain, and elsewhere. It is a yellowish or ash-grey mineral, sectile, and suhtranslucent. Sometimes it occurs as a crust, or forms granular concretions,. At other times it crystallizes in four-sided prisms. Its specific gravity is 6-4S2, whilst that of the powdered calomel of the shops is 7T4, and that of the crystallized factitious subchloride is 7-2. 

Tenacity The cohesiveness of a material or how it behaves under tension and compression. Common forms of tenacity include brittle (breaks and powders easily), malleable (material can be hammered into sheets), sectile (material can be cut into thin layers with a knife), and ductile (the material can be drawn into a wire). 

Sectility the ability of a substance to be cut or shavings taken without breaking. 

Most of the methods used to characterize the rheological behavior of butter are empirical and attempt to imitate certain sensory perceptions. They typically involve penetrometry, extrusion or sectility tests (Prentice, 1972). In these tests, the structure of the material is destroyed in order to probe its response to an applied stress or deformation. These methods mostly serve a quality control function. Their results provide an index of consistency to adjust milk-blending operations or to regulate a step in the butter-making process. While the results have practical significance, they often have no theoretical basis. Therefore, attempts have also been made to study the intrinsic properties of plastic fats. In many such cases, small deformation tests, in which the structure of the sample remains intact have been used to probe milk fat rheology. 

Dixon, B.D., Williams, T. 1977. Measurement of butter firmness by sectility testing. Aust. J. Dairy Technol. 32, 177-179. 

Hardness and apparent yield stress can be calculated from penetration test data, while sectility test data can be converted to a yield stress and a pseudo-Bingham plastic viscosity (Dixon and Williams, 1977). 

Rohm, H. 1992. Influence of sectility speed on the relationship between sensory and instrumental evaluation of edible fat firmness. Lebensm. Unters. Forsch. 194, 240-243. 

Sectility. When pared with a sharp knife, amber and copal will chip, while plastics will pare. Only a tiny scraping should be taken firom the back of an item, or from a drill hole in a bead. 

Sectility. This is destructive and cannot be recommended. Besides, it is not a useful test as both plastic and horn can also be pared with a sharp knife. 

Sectility. This is not a useftil test as horn, like tortoiseshell and plastic, can be paired with a sharp knife. 

Materials Colour zoning Inclusions Sectility In salt water UV light Burning aroma... 

Sectility The capability of being cut with a sharp knife, without breaking. See Pare. 

Most mechanical tests developed for fats are empirical in nature and are usually designed for quality control purposes, and they attempt to simulate consumer sensory perception (3, 4). These large-deformation tests measure hardness-related parameters, which are then compared with textural attributes evaluated by a sensory panel (3, 5). These tests include penetrometry using cone, pin, cylinder and several other geometries (3, 6-12), compression (13), extrusion (13, 14), spreadability (15, 16), texture profile analysis (2), shear tests (13), and sectility measurements (14). These methods are usually simple and rapid, and they require relatively inexpensive equipment (3, 4, 17). The majority of these tests are based on the breakdown of structure and usually yield single-parameter measurements such as hardness, yield stress, and spreadability, among others (4, 17-20). The relationship between these mechanical tests and the structure of a fat has, however, not been established. The ultimate aim of any materials science endeavor is to examine the relationship between structure and macroscopic properties. 

Residues from ceramic vessels and adhesives from Egyptian opus sectile... 

Pine pitch, beeswax, plant oil [46] Adhesive from Egyptian opus sectile Pt-heated filament pyrolyzer HMDS Py temperature 550°C... 

Calomel [10112-91-1] (syn., horn quicksilver) [from the Greek, kalos, beautiful, and melas, black] (ICSD 64683 and PDF 26-312) HgA M = 472.0854 84.98 wt.% Hg 15.02 wt.% Cl Coordinence Hg(5) (Halides) Tetragonal a = 447.8 pm c= 1091.0 pm (Z = 4) S.G. l4/mmm P.G. 4/mmm Uniaxial (e>) a>s 1.973 fs 2.656 Color white, yeUowish gray, gray, yellowish white, or brown. Luster adamantine, resinous. Luminescence fluorescent. Diaphanaty translucent to subtranslucent. Streak pale yellowish white. Qeavage (100), (011). Twinning (110). Fracture conchoidal, sectile. Occurrence oxidized mercury deposits. Easy fusible (m.p. 525 C). Insoluble in water. 

Petzite [Named after the chemist, W. Petz] (ICSD 27539 and PDF 44-1420) Ag,AuTe, M = 667.90294 32.30 wt.% Ag 38.21 wt.% Te 29.49 wt.% Au (Sulfides and sulfosalts) Cubic P.G. 23 Isotropic R = 45% 2.5 8700- 9140 Habit massive, granular. Color iron black or steel gray. Luster metallic. Diaphandty opaque. Streak grayish black. Fracture brittle, sectile. 

Cleavage (101), (110). Fracture sectile. Chemical highly soluble in carbon disulfide CS. Occurrence volcanic exhalations and bacterial reduaion of stUfetes in sediments. 

Sylvite (syn., sylvinite) [7447.40-7] [Named after the Dutch chemist and physician of Leyden, Sylvia de la Boe (1614-1672)] (ICSD 22156 and PDF 41-1476) KCl M = 74.551 52.45 wt.%K 47.55 wt.% a (Halides) Coordinence K(6) Cubic fls 629.31 pm Bl,cF8 (2 4) S.G. Fm3m P.G.4-32 Rock salt type Isotropic n = 1.490 2.0 1988 Habit massive, cubic euhedral crystals, fibrous. Color white, yellowish white, reddish white, bluish white, or brownish white. Luster vitreous, greasy. Diaphaneity transparent to translucent. Streak white. Geavage (100), (010), (001). Fracture uneven, brittle, sectile. Soluble in water, the soln. color the flame of a bunsen in violet. Bitter taste. Fusible (m.p. 778°C). 

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