(n.) A minute mineral form like those common in glassy volcanic rocks and some slags, not having a definite crystalline outline and not referable to any mineral species, but marking the first step in the crystallization process. According to their form crystallites are called trichites, belonites, globulites, etc.
Example Sentences:
(1) Although the crystallite widths were similar in both AI and normal enamel, the AI teeth showed areas where the crystallite order and continuity appeared disrupted.
(2) Dual aspects, crystallite size and lattice imperfection related to the crystallinity were analyzed by the process of Variance and Fourier analysis based on the X-ray diffraction line profiles.
(3) A corresponding gradient of PA reaction product was observed on the opposing enamel crystallites.
(4) These prior studies were interpreted to show that the crystallites must be within the hole zones.
(5) The amount of adhering platelets was minimum for the surfaces of the copolymers having a crystallite thickness of 6.0-6.5 nm and a long period of 12-13 nm.
(6) The surface area of the crystallites forming inside the protein increases until the molecule is half full, and then declines.
(7) Dimeric SLS, on the other hand, accounts for the majority of the crystallites seen in preparations of collagen types II and V. Dimeric SLS from both collagen types II and V reveal overlap zones at the carboxy-terminal ends of the collagen molecules.
(8) It is shown that the organic structure of the biomineral effects the properties of inorganic crystallites by means of the spatial geometric factor.
(9) Electron microscopy has revealed that chitin from a representative selection of insect orders (plus one crustacean and one arachnid) is localized in crystallites about 2.8 nm across.
(10) The orderly formation of rod and interrod enamel containing precisely-oriented hydroxyapatite crystallites requires a high degree of cellular cooperation.
(11) These microfibers have a diameter of 80 A and may consist of chitin crystallites surrounded by a matrix coat.
(12) Although no changes in serum chemistry, bone chemistry, or bone histology could be found, the young castrated animals versus controls showed less density of bone mineral as determined by the density fractionation technique and smaller crystallite size of mineral particles as determined by x-ray diffraction line-broadening analysis.
(13) The palladium-silver alloy had inhomogeneous crystallites.
(14) We therefore conclude that the early crystallites still contain lattice defects, which are annealed out to some degree with crystal growth.
(15) Although reconstituted fibres from solutions of skin and cartilage collagen are similar, the segment-long spacing crystallites formed with pepsin-solubilized cartilage collagen present a symmetrical and dimeric form corresponding to the lateral aggregation of two monomers with an overlap (90nm) of the C-terminal ends.
(16) The crystallite size is also affected by the presence of 32P.
(17) By adjustment of various parameters affecting crystallite size in thin metal replica films used for contrasting biological macromolecules for electron microscopy, improvements in the level of image information retrieved are demonstrated.
(18) Using electron microscopic microprobe analysis, it was shown that the peripheral mineralized region, consisting mainly of closely packed needles, often contained 100% more mineral substance than the central, mineralized collagen zone, which consisted mainly of plate-like crystallites.
(19) The investigation of the degree of interpenetration between the two component phases of whewellite kidney stones, the protein matrix and calcium oxalate monohydrate crystallites, is extended by a technique of microchemical analysis, employing X-ray photoelectron spectroscopy (XPS).
(20) Cartilage crystallites, except those of the epiphysis, are more rough-grained in the old than in the young animals.
Grain
Definition:
(v. & n.) See Groan.
(n.) A single small hard seed; a kernel, especially of those plants, like wheat, whose seeds are used for food.
(n.) The fruit of certain grasses which furnish the chief food of man, as corn, wheat, rye, oats, etc., or the plants themselves; -- used collectively.
(n.) Any small, hard particle, as of sand, sugar, salt, etc.; hence, any minute portion or particle; as, a grain of gunpowder, of pollen, of starch, of sense, of wit, etc.
(n.) The unit of the English system of weights; -- so called because considered equal to the average of grains taken from the middle of the ears of wheat. 7,000 grains constitute the pound avoirdupois, and 5,760 grains the pound troy. A grain is equal to .0648 gram. See Gram.
(n.) A reddish dye made from the coccus insect, or kermes; hence, a red color of any tint or hue, as crimson, scarlet, etc.; sometimes used by the poets as equivalent to Tyrian purple.
(n.) The composite particles of any substance; that arrangement of the particles of any body which determines its comparative roughness or hardness; texture; as, marble, sugar, sandstone, etc., of fine grain.
(n.) The direction, arrangement, or appearance of the fibers in wood, or of the strata in stone, slate, etc.
(n.) The fiber which forms the substance of wood or of any fibrous material.
(n.) The hair side of a piece of leather, or the marking on that side.
(n.) The remains of grain, etc., after brewing or distillation; hence, any residuum. Also called draff.
(n.) A rounded prominence on the back of a sepal, as in the common dock. See Grained, a., 4.
(a.) Temper; natural disposition; inclination.
(a.) A sort of spice, the grain of paradise.
(v. t.) To paint in imitation of the grain of wood, marble, etc.
(v. t.) To form (powder, sugar, etc.) into grains.
(v. t.) To take the hair off (skins); to soften and raise the grain of (leather, etc.).
(n.) To yield fruit.
(n.) To form grains, or to assume a granular ferm, as the result of crystallization; to granulate.
(n.) A branch of a tree; a stalk or stem of a plant.
(n.) A tine, prong, or fork.
(n.) One the branches of a valley or of a river.
(n.) An iron first speak or harpoon, having four or more barbed points.
(n.) A blade of a sword, knife, etc.
(n.) A thin piece of metal, used in a mold to steady a core.
Example Sentences:
(1) First, it has diverted grain away from food for fuel, with over a third of US corn now used to produce ethanol and about half of vegetable oils in the EU going towards the production of biodiesel.
(2) It is possible that the formation of a mycetoma grain may limit a patient's exposure to antigens which confer specificity, an explanation which may also account for the variability in antibody responses seen.
(3) Preserving alfalfa as silage and feeding in a TMR to cows in early lactation resulted in greater milk production via increased DMI or improved feed efficiency compared with preserving alfalfa as hay and feeding grain separately.
(4) Results indicate that the rachitogenic factor in rye is not present in the ash portion of the grain, that it can be largely overcome by water extraction and penicillin supplementation, and that an organic solvent extraction has no effect.
(5) Light microscope autoradiography revealed the development of specific silver grains in the medial layer of epineurial and perineurial arteries in sections of sciatic nerve exposed either to [3H]DHA or [3H]QNB.
(6) The 180-acre imperial palace appears to send ripples through the surrounding urban grain like a rock thrown into a pond, forming the successive layers of ring-roads.
(7) The impact of pollen on the respiratory mucosa was modeled by studying the process by which solutes are eluted from pollen grains.
(8) One part fresh pollen grains is uniformly mixed with nine parts of the solution and left at room temperature for at least 5 hr.
(9) With [3H]proline as precursor, the grain densities were greater over surface epithelium than over submucosal gland.
(10) We have recently demonstrated in vitro a potential biological mechanism which could occur in vivo upon inhaling airborne graon dust, thereby constituting a potential inflammatory insult to the respiratory tracts of grain workers.
(11) In addition, livestock-rearing can use up to 200 times more water a kilogram of meat compared to a kilo of grain.
(12) Dietary recommendations for cancer prevention advise reduced intake of fat; increased intake of fruits, vegetables, and grains; and moderate intake of alcohol and salt-cured, salt-pickled, and smoked foods.
(13) Most cases are diagnosed histologically by identification of an actinomycotic grain in the center of the abscess or by cytologic features on Papanicolaou smears.
(14) The labelling intensity (as estimated by the number of silver grains per unit of cytoplasmic area) was maximum in cells having dense-cored vesicles whose mean diameter was between 130 and 170 nm, but decreased for cells with mean diameter of dense cores smaller than 130 nm, or larger than 170 nm.
(15) Comparison of autoradiograms with Nissl-stained sections allowed precise correlation of autoradiographic grain distribution with cytoarchitecture.
(16) "Nonthyroidectomy" cells had few silver grains over RER; most were over secretory granules and Golgi areas.
(17) After 2,6 and 24 hours there is a progressive increase of silver grains on the extracellular space most of them concentrated over thick collagen fibrils.
(18) The grain distribution over luteal cells and arteriolar smooth muscle was reduced (p less than 0.001) after coincubation with excess unlabeled LTC4 but not with excess unlabeled LTA4, LTB4, LTD4, LTE4, prostaglandin (PG)E2, PGF2 alpha or PGI2.
(19) The pollen sterility (up to 30% of grains) is due to the abortive spore development.
(20) The resolution of radioautography with 59Fe was determined with a line source and the distance from the hot line within which half of the grains fell (HD value) was 1650 A.