(n.) A bright green variety of amphibole occurring usually in fibrous or columnar masses.
Example Sentences:
(1) A study was conducted to estimate the exposure-response relationship for tremolite-actinolite fiber exposure and radiographic findings among 184 men employed at a Montana vermiculite mine and mill.
(2) Fibrous actinolite was found in unexpanded Montana vermiculite ore at a maximum concentration of 2.0%.
(3) In the control group, predominant fibers were tremolite or actinolite.
(4) Actinolite was also found in the Virginia vermiculite ore but at a lower concentration and mostly as cleavage fragments with low length-to-width ratios.
(5) Health effects have been documented among American vermiculite workers who mined and processed vermiculite contaminated with amphibole asbestos, viz., tremolite-actinolite.
(6) By contrast, tremolite and actinolite constituted the majority of uncoated fibers in these cases.
(7) A dose of 0.25 mg actinolite or UICC chrysotile induced tumours of the peritoneum in more than 50% of the animals.
(8) Polyvinyl-pyridine-N-oxide prolonged the tumour latency after injection of actinolite.
(9) The mean length for bodies formed on chrysotile was 35 micron, and for bodies formed on tremolite or actinolite, 36 micron.
(10) Analysis of lung mineral content revealed background levels of chrysotile but an elevated level of tremolite and actinolite asbestos.
(11) The three groups did not differ significantly with respect to lung burden of chrysotile or tremolite and actinolite, but Group III had a lung burden of amosite and crocidolite that was three orders of magnitude greater than in Groups I and II, with no overlap.
(12) The major types of core fibres of ferruginous bodies were found to be asbestos, including amosite, crocidolite, chrysotile and the tremolite-actinolite series, but a small number of fibres of materials other than asbestos were also detected.
(13) The vermiculite ore and concentrate of a mine and mill near Libby, Montana, was found to be contaminated with fibrous tremolite-actinolite.
(14) The latter had a geometric mean length of 3.7 microns, a value considerably longer than we have found for tremolite and actinolite from Quebec chrysotile miners but roughly the same as the mean length of amosite and crocidolite in workers with occupational amphibole exposure.
(15) Fibrous dusts (chrysotile, glass fibers, nemalite, palygorscite, and gypsum) and granular dusts (actinolite, biotite, hematite, pectolite, sanidine, and talcum) were injected intraperitoneally into rats.
(16) The types of asbestos fibers were chrysotile, amosite, crocidolite, actinolite and tremolite.
(17) Mineralogic analysis of four cases showed that 46 of 72 (64%) bodies isolated and examined contained chrysotile cores, and 21 of 72 (29%) bodies contained cores of the amphiboles tremolite and actinolite.
(18) No tremolite or actinolite fibers of length greater than 8 microns microns and width less than 0.25 micron were observed.
(19) On the other hand, tremolite and actinolite fibers constituted non-beaded club-like type II or type IV bodies and tended to have a larger diameter than that of amosite or anthophyllite fibers (p less than 0.005).
(20) Persistent glass fibres were less effective than actinolite having a similar fibre size distribution.
Mineral
Definition:
(v. i.) An inorganic species or substance occurring in nature, having a definite chemical composition and usually a distinct crystalline form. Rocks, except certain glassy igneous forms, are either simple minerals or aggregates of minerals.
(v. i.) A mine.
(v. i.) Anything which is neither animal nor vegetable, as in the most general classification of things into three kingdoms (animal, vegetable, and mineral).
(a.) Of or pertaining to minerals; consisting of a mineral or of minerals; as, a mineral substance.
(a.) Impregnated with minerals; as, mineral waters.
Example Sentences:
(1) It is suggested that the Japanese may have lower trabecular bone mineral density than Caucasians but may also have a lower threshold for fracture of the vertebrae.
(2) The absorption of ingested Pb is modified by its chemical and physical form, by interaction with dietary minerals and lipids and by the nutritional status of the individual.
(3) There will be no statutory inquiry or independent review into the notorious clash between police and miners at Orgreave on 18 June 1984 , the home secretary, Amber Rudd, has announced.
(4) There was however no difference in the cross-sectional studies and no significant deleterious effect detected of tobacco use on forearm bone mineral content.
(5) From these results, it was suggested that the inhibitory effect of Cd on in vitro calcification of MC3T3-E1 cells may be due to both a depression of cell-mediated calcification and a decrease in physiochemical mineral deposition.
(6) The effect of dietary fibre digestion in the human gut on its ability to alter bowel habit and impair mineral absorption has been investigated using the technique of metablic balance.
(7) The greatest advantages of spinal QCT for noninvasive bone mineral measurement lie in the high precision of the technique, the high sensitivity of the vertebral trabecular measurement site, and the potential for widespread application.
(8) The model has been used to evaluate mineral changes from the use of fluoride dentifrices and rinses, chewing gum, and food sequencing.
(9) These data indicate improved bone mineralization as compared with previously reported data from very-low-birth-weight neonates.
(10) Gladstone's speech was not made in Parliament, but to a crowd of landless agricultural workers and miners in Scotland's central belt, Gove pointed out.
(11) Artificially produced mineral waters which are identical to natural ones are also applied.
(12) The method of mineral estimation using phalanges is described and its reproducibility was tested on 17 parameters.
(13) Secondary structural features of bovine amelogenin, a hydrophobic protein of developing enamel implicated in ename mineralization, are derived using 2D NMR spectroscopy in solution and molecular mechanics-dynamics studies.
(14) Reduced mineral absorption is fairly well documented and has sound theoretical support from basic chemistry.
(15) Microbiological analyses of sediments located near a point source for petrogenic chemicals resulted in the isolation of a pyrene-mineralizing bacterium.
(16) Years of education completed and poverty status did not significantly affect folate concentrations; however, the prevalence of low folate concentrations among users of vitamin or mineral supplements was significantly lower than it was among nonusers in selected subgroups.
(17) Unsupplemented human breast milk may not provide sufficient calcium and phosphorus for the rapidly growing preterm infant to match the accumulation that should have taken place in utero and to permit normal bone mineralization.
(18) In some areas of the ligament, extracellular plasma membrane-invested matrix vesicles and thick wall-bound matrix giant bodies with or without mineralized deposits were present.
(19) My grandfather was a coal miner and Nana was rather plump and bossy.
(20) These diets were: diet C consisting of commercial Rat Chow: diet CG, the same diet diluted with 70% glucose calories, diet A, a simulated "American" diet made up of 25 widely used foods, diet AS, the same diet supplemented with small amounts of 25 vitamins and minerals.