What's the difference between monazite and samarium?
Monazite
Definition:
(n.) A mineral occurring usually in small isolated crystals, -- a phosphate of the cerium metals.
Example Sentences:
(1) The thoron flux from a dry, "infinitely thick" layer of monazite was found to be 41 Bq m-2 s-1.
(2) Gamma radiation levels had a mean value of approximately 40 nSv h-1, and monazite sand returned the highest activity concentrations of 0.16% and 3.4% for 238U and 232Th, respectively.
(3) More extensive work on monazite samples from a number of sites will be necessary before this can be stated as a general conclusion applicable to all Western Australian monazite deposits.
(4) 228Ra and 220Rn (also designated thoron in the paper), were investigated in a typical Western Australia monazite.
(5) The depth of monazite from which thoron is exhaled is limited to 40-50 mm, and within the first 10 mm is a linear function of bed thickness.
(6) The results indicate that secular equilibrium may be assumed when calculating 232Th daughter concentrations in monazite from the gross alpha activity.
(7) In a search for geochemical factors that could play a role in the pathogenesis of tropical endomyocardial fibrosis, endomyocardial tissue samples obtained from patients at necropsy or operation were analysed for major elements present in laterite and monazite, which are important soil constituents of Kerala State of India.
Samarium
Definition:
(n.) A rare metallic element of doubtful identity.
Example Sentences:
(1) The cells were then run through a high-magnetic gradient separation column utilizing an external samarium cobalt magnet.
(2) At the 48 h, the samarium-containing phagosomies were found still in both kinds of cells in the liver.
(3) New Biol., 240, 130) have located a binding site for samarium ion in the active centre.
(4) Common acute lymphoblastic leukemia (ALL) cells were targeted using CD9 and CD10 mouse monoclonal antibodies prior to attachment of magnetic particles coated with anti-mouse immunoglobulin and depleted with samarium cobalt magnets.
(5) Samarium-153 is a radionuclide which can be produced in high yield by neutron irradiation and which has nuclear properties that make it attractive for use as a radiotherapeutic agent.
(6) Enriched samarium oxide (98.2% 152Sm2O3) was irradiated in low neutron flux and high neutron flux reactors to produce 153Sm with specific activities of 14.3 GBq and 22.1 TBq mmol-1 Sm, respectively, at the time of use.
(7) Four controls, four monkeys with acrylic biteblocks and four monkeys with repelling samarium magnets embedded in biteblocks were observed for 12 weeks.
(8) Arsenic, barium, lanthanum, molybdenum, samarium and strontium were detected only rarely.
(9) PEG was used as a fluid marker; hay particles were labelled with cerium or samarium and the samples were determined by neutron activation analysis.
(10) Nutrient markers were oxides of samarium, scandium, ytterbium, and europium.
(11) The cells are isolated within 5 min after a 5-min incubation at 4 degrees C. Magnetic separation of rosettes with a strong cobalt-samarium magnet eliminates all the laborious centrifugation steps necessary with conventional procedures.
(12) In this study, we aimed at observing the route by which samarium enters the liver cells and the process of the formation of samarium aggregates.
(13) The behavior of single 250-mg doses of a multiparticulate form of erythromycin base (ERYC(R)), each including five pellets radiolabeled with neutron-activated samarium-153, was observed by gamma scintigraphy in seven male subjects under fasting and nonfasting conditions.
(14) Radiolabeling of tablets was achieved by the incorporation of samarium-152 oxide during manufacture, followed by neutron activation of the tablet to produce the gamma-emitting isotope samarium-153.
(15) Thirty-five patients with disseminated skeletal metastases from a variety of tumor types underwent clinical trial of samarium-153 ethylenediaminetetramethylene phosphonate (153Sm-EDTMP) on a day-patient basis.
(16) Of the four Ln3+ ions tested lanthanum (La3+) was the strongest inhibitor; erbium (Er3+) and lutetium (Lu3+) were only weakly active, while samarium (Sm3+) had intermediate potency.
(17) From 15 min to 2 h both Kupffer cells and hepatocytes endocytosed samarium-containing particles and formed phagosomes, in which the ingested particles were progressively concentrated.
(18) This time-resolved immunofluorometric assay for human follitropin involves use of europium- or samarium-labeled monoclonal antibodies, with an average incorporation ratio of 3 mol of Eu3+ or Sm3+ per mole of antibody.
(19) The rosetted Langerhans cells were removed by a cobalt-samarium magnet.
(20) The failure was attributed, after long investigation, to hydrogen adsorption by the samarium-cobalt magnets.