(n.) A metallic element, intermediate in value between silver and gold, occurring native or alloyed with other metals, also as the platinum arsenide (sperrylite). It is heavy tin-white metal which is ductile and malleable, but very infusible, and characterized by its resistance to strong chemical reagents. It is used for crucibles, for stills for sulphuric acid, rarely for coin, and in the form of foil and wire for many purposes. Specific gravity 21.5. Atomic weight 194.3. Symbol Pt. Formerly called platina.
Example Sentences:
(1) The results demonstrated that K2PtCl4 was bound to a greater degree than CDDP in this system with 3-5 and 1-2 platinum atoms respectively, bound per transferrin molecule.
(2) • This article was amended on 1 September 2014 because an earlier version described Platinum Property Partners as a buy-to-let mortgage lender.
(3) The potential loss of NH3 in such platinum complexes may lead to additional products over time.
(4) Platinum deer mice are conspicuously pale, with light ears and tail stripe.
(5) The diameters of regenerating crypts were measured at various times after X-rays and cis-platinum given either alone or in combination.
(6) Cis-platinum treatment is considered to be effective and useful for gynecological cancer.
(7) Analyses of mitotic activities and chromosome aberrations in lymphocytes of human peripheral blood have been utilized to evaluate 24-hour cytotoxic and genetic effect of various concentrations (0, 12, 60, 120, 240, 360 mumol l-1) of ethylmalonate platinum (EM-Pt) in vitro.
(8) Excretion into urine within 24 hours was in the range of 54.2% to 92.2% of the administered platinum.
(9) The time dependency of the antitumour activity of (-)-(R)-2-aminomethylpyrrolidine(1,1-cyclobutanedicarboxylato++ +)platinum(II) monohydrate (DWA2114R) was examined in mice inoculated i.p.
(10) Primary therapy consisted of surgery, usually unilateral oophorectomy, and cis-platinum-based VAB chemotherapy.
(11) Methods have been reviewed for alkylating agents, platinum compounds, antitumour antibiotics, antimetabolites, alkaloids, suramin, 1-hydroxy-3-amino-propylidene-1,1-bisphosphonate and tamoxifen.
(12) We conclude that the major difference between these two lines was the glutathione-related detoxification of platinum.
(13) In order to determine possible risk factors and to assess the value of platinum microcoils added to polyvinyl alcohol particles in preoperative embolization of cerebral arteriovenous malformations in adults, we reviewed our experience with this procedure.
(14) A mixed platinum (II) complex with tert-butylamine and doxorubicin (coordinated via the amino-group) has been synthesized and tested for antitumor activity.
(15) Unlike cisplatin, bis(platinum) complex binding does not unwind supercoiled DNA.
(16) F-Pt in serum remained more than 90% of total platinum following IP CBDCA until 12 hours after administration.
(17) These data suggest that carrier ligand effects seen in resistant cell lines may be due, in part, to differences in accumulation of platinum, repair of Pt-DNA adducts, and tolerance of Pt-DNA adducts.
(18) To obtain pharmacokinetic data on anticancer drugs, we measured concentrations of plasma and tumor tissue for Cis-platinum, Adriamycin and Bleomycin in operated patients and xenografts.
(19) The effect of various fuel additives on the ability of platinum-palladium catalytic converters to remove the carbon monoxide and hydrocarbon components of automotive exhaust has been examined.
(20) Afferent nerve activity is recorded with a monopolar platinum wire electrode from filaments of the mesenteric nerves that run between the artery and vein supplying the segment.
Silver
Definition:
(n.) A soft white metallic element, sonorous, ductile, very malleable, and capable of a high degree of polish. It is found native, and also combined with sulphur, arsenic, antimony, chlorine, etc., in the minerals argentite, proustite, pyrargyrite, ceragyrite, etc. Silver is one of the "noble" metals, so-called, not being easily oxidized, and is used for coin, jewelry, plate, and a great variety of articles. Symbol Ag (Argentum). Atomic weight 107.7. Specific gravity 10.5.
(n.) Coin made of silver; silver money.
(n.) Anything having the luster or appearance of silver.
(n.) The color of silver.
(a.) Of or pertaining to silver; made of silver; as, silver leaf; a silver cup.
(a.) Resembling silver.
(a.) Bright; resplendent; white.
(a.) Precious; costly.
(a.) Giving a clear, ringing sound soft and clear.
(a.) Sweet; gentle; peaceful.
(v. t.) To cover with silver; to give a silvery appearance to by applying a metal of a silvery color; as, to silver a pin; to silver a glass mirror plate with an amalgam of tin and mercury.
(v. t.) To polish like silver; to impart a brightness to, like that of silver.
(v. t.) To make hoary, or white, like silver.
(v. i.) To acquire a silvery color.
Example Sentences:
(1) Another Guardian podcast, Days in the Life, won silver in the same category.
(2) Sulphides, which possibly form on silver alloys, showed cytotoxicity.
(3) We repeat our call for them to do so at the earliest opportunity, and to share those findings so that we can take any appropriate actions.” In the BBC programme the 29-year-old Rupp, who won 10,000m silver at the London 2012 Olympics behind Farah, was accused of having taken testosterone and being a regular user of the asthma drug prednisone, which is banned in competition.
(4) Using a silver staining technique (AgNOR technique), we have investigated the nucleolar organizer-associated proteins (NORs) in formalin-fixed paraffin embedded conjunctival specimens of 15 intraepithelial squamous carcinomas, 10 hyperplastic-dysplastic samples and 10 control epithelial fragments; the mean number of intranuclear black dots was determined for each case.
(5) By contrast, SAP-35, the major surfactant-associated glycoprotein of molecular weight = 35,000, and other higher molecular weight proteins were not detected in significant quantities in the CLSE or surfactant-TA replacement surfactants, either by highly sensitive silver stain analysis or by immunoblot using monospecific antisera generated against bovine SAP-35.
(6) Average number of metaphase Ag-NOR chromosomes (calculated per diploid chromosome set) in haploid parthenogenones exceeded that in the control; in some cases all NORs were stained by silver.
(7) They continuously produced heteropolymeric G6PD and showed strictly additive patterns of silver staining of both parental sets of nucleolar organizing chromosomes.
(8) The nerve endings in the heart of fishes were studied using silver impregnation techniques.
(9) The silver impregnated axons of these cells converge to a paired centrosuperficial tract forming terminal enlargements at the ventrolateral surface of the spinal cord.
(10) On the upside, this year's monsoon will lead to bumper agricultural production, and the cheaper rupee also comes with a thick silver lining.
(11) Some proteins stained with silver can be directly transfer, almost all proteins can be transferred comparably to non-stained controls.
(12) Treatment of the nucleoli with 80 mM Tris-HCl (pH 7.5) -- 0.15 M NaCl did, however, eliminate silver binding.
(13) 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.
(14) The ammoniacal silver method, which identifies basic proteins, gives a positive reaction in cytoplasmic granules of rat peritoneal mast cells.
(15) In this study we confirmed this finding in two cases of PSP by using Bodian silver staining and immunohistochemistry with antibody to human tau protein.
(16) The problem, said Dr Kinsey, was that Shakespeare's "sceptred isle ... set in a silver sea" is now set in a sea of rubbish.
(17) Several hundred polypeptides were resolved as seen by silver staining.
(18) The Bielschowski silver stain revealed intracellular, argentophilic deposits, which were birefringent when stained with Congo red and viewed in polarized light.
(19) Since no evaluation of the relative merits of electro and chemical cautery has been reported, a prospective randomized study was conducted to assess the effectiveness of electro-cautery and cautery with silver nitrate.
(20) 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.