(n.) An oxide of iron (Fe3O4) occurring in isometric crystals, also massive, of a black color and metallic luster. It is readily attracted by a magnet and sometimes possesses polarity, being then called loadstone. It is an important iron ore. Called also magnetic iron.
Example Sentences:
(1) Silicone coated magnetite of nanometeric size was incorporated in the drug bearing microspheres.
(2) However, two developments during the past decade have changed this perception dramatically, the first being the discovery that many organisms, including humans, biochemically precipitate the ferrimagnetic mineral magnetite (Fe3O4).
(3) The results of this experiment show that the "biological magnetite" is distinctly different from hemosiderin and has characteristic properties when subjected to a magnetic field.
(4) Viable spermatozoa were isolated from magnetite-complexed spermatozoa, but the motility of the isolated spermatozoa deteriorated rapidly during the subsequent capacitation period.
(5) Magnetite (Fe3O4) particles 0.1-0.5 microns in diameter doped with either 99mTc or 111In have been prepared and characterized by electron microscopy and Mössbauer spectroscopy.
(6) The water relaxation ability of ferromagnetic, albumin-coated magnetite (Fe3O4) particles has been investigated.
(7) So far, identification of magnetite in tissue has been mainly based on magnetometry.
(8) By conjugating a monoclonal IgM antibody of CD8-specificity to magnetite-containing polymer particles, we have developed a rapid and simple one-step procedure for positive selection of T8 cells.
(9) A magnetic immobilized lactase has been prepared using magnetite as the magnetic material.
(10) Hydrolytic polymerization of iron(III) occurs in many reactions in vivo, for example, the formation of bacterial magnetite in magnetotactic organisms, biomineralization of iron and the synthesis of the metallic core of the iron-storage protein ferritin.
(11) X-ray diffraction patterns show that the mature denticles of three extant chiton species are composed of the mineral lepidocrocite and an apatite mineral, probably francolite, in addition to magnetite.
(12) The latter structures consist of nanometer-sized magnetite (Fe3O4) cores which are enwrapped by a phospholipid bilayer.
(13) We found significant quantities of single-domain magnetite in connective tissue from the ethmoid region of the skull of adult (4-year-old) sockeye salmon.
(14) The adhesion of cells of Salmonella typhimurium to albite, biotite, felspar, magnetite and quartz was correlated to the presence of fimbriae and degree of hydrophobicity and charge of the bacterial surface.
(15) We suggest that tissue from within the ethmoid region of the skull in pelagic fishes is the only site yet identified where magnetite suitable for use in magnetoreception is concentrated.
(16) This report describes the preparation and characterization of synthetic ferritin-like particles produced by precipitation of magnetite from a mixture of ferrous and ferric ions in the presence of dextran.
(17) The polyvinylamine-magnetite pellicle shielded the external plasma membrane face to proteolysis by papain and pronase.
(18) First, a method to produce a stable condition of hydrostatic pulmonary edema was developed and verified by CT. Second, dose-response curves for coated magnetite preparations were constructed by giving edematous rats varied doses of these preparations and measuring signal intensity changes of various organs by sodium MRI in a 31-cm-bore 1.9-T magnet.
(19) By the smolt stage, the amount of magnetite present in the front of the skull is sufficient to provide the fish with a magnetoreceptor capable of detecting small changes in the intensity of the geomagnetic field.
(20) The carrier consists of human serum albumin microspheres, average of 1 micrometer in diameter, in which a magnetizable material (magnetite) and a prototype drug (doxorubicin) are entrapped.
(n.) The native form of a metal, whether free and uncombined, as gold, copper, etc., or combined, as iron, lead, etc. Usually the ores contain the metals combined with oxygen, sulphur, arsenic, etc. (called mineralizers).
(n.) A native metal or its compound with the rock in which it occurs, after it has been picked over to throw out what is worthless.
(n.) Metal; as, the liquid ore.
Example Sentences:
(1) Three long-time and two ore three respectively shorter observations of scoliotics with syringomyelia are presented and the pertinent literature is discussed including the complex etiopathogenesis.
(2) His views were backed up by a recent survey in newspaper Il Sole 24 Ore , which listed Sicily as the worst region in Italy in quality-of-life rankings, and Palermo as the worst within the region.
(3) But Zhang described $9m of that as legitimate profit from an iron-ore deal, adding: "There are plenty of reasons to argue against the rest of the amount."
(4) Forrest noted Fortescue’s rivals Rio Tinto and BHP Billiton had a break-even price of about US$30 a tonne, and the latter announced plans on Tuesday to slash costs at its WA iron ore mines to US$16 a tonne.
(5) These could include prize iron ore mines in the Pilbara region of Western Australia.
(6) Fibrous actinolite was found in unexpanded Montana vermiculite ore at a maximum concentration of 2.0%.
(7) The main works in the mine were classified as mining, dressing of ores, refining, and clerical work.
(8) Hair arsenic analysis in people living in two locations near an ore smelter and a refinery indicated high-levels compared to those of individuals residing in nonpolluted areas.
(9) In the study area, Cu and Zn emanate from sewage and boat slips (antifouling paints), while Zn probably also originates from coolant water from an electricity power generating station and iron ore exporting facilities.
(10) Microorganisms were studied by capillary microscopy in the surface layer of ooze and in the bottom layer of water in the ore field of the lake Krasnoye.
(11) For example, a post-consumer automotive catalyst has a concentration of platinum group metals (like platinum, palladium and rhodium) more than 100 times higher than in natural ores.
(12) In addition to the financial costs due to lost output and repairs at the mine, which accounts for about 10% of Brazil’s iron ore exports, BHP and Vale are expected to face steep fines as well as lawsuits at a time when iron ore prices are at their lowest point in a decade.
(13) In order to provide drainage, the catheter should be advanced under fluoroscopic control into one of the major radicles ore preferably into the distal common duct beyond the point of obstruction.
(14) Strikes are also under way at gold and iron ore mines and production of 2,000 cars was lost after a wildcat strike at the Toyota plant in Durban.
(15) Facebook Twitter Pinterest The Fortescue Solomon iron ore mine in the Valley of the Kings.
(16) The hazards covered are: accidents, dust (including poisoning by certain ores), high temperature and humidity, noise and vibration, toxic gases, and miscellaneous other hazards.
(17) Forrest described the job cuts, from a workforce of about 4,500, as “personally tragic” and “heartbreaking”, but said the iron ore company was still making profits, with a break-even price of about US$39 a tonne.
(18) An elaborated model for the mining of ores, the applicability to underground workers and the comparability of loading quantities, based on the dosage measurement, are described.
(19) A ustralians are routinely being told that hefty mining taxes would hinder the country’s largest exports of coal and iron ore.
(20) While the iron ore sector went from representing 1.1% of GDP to its current share of 3.9%, the coal industry went from 1.1% of GDP to now representing about 1.4%.