(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.
Whitish
Definition:
(a.) Somewhat white; approaching white; white in a moderate degree.
(a.) Covered with an opaque white powder.
Example Sentences:
(1) At necropsy, small whitish foci were found randomly distributed on the liver surface.
(2) The superior fascicle is whitish, dimmed and frequently thinner than the others and was classified under 4 patterns, according to its insertion.
(3) A whitish and hard tumor, 10 cm in maximum diameter, without any cirrhotic features was noted in the resected liver.
(4) However, no report to date has been made on the presence of H. pylori in the whitish exudate of peptic ulcers.
(5) The fungus could be histologically verified from a whitish yellow thick deposits on the lens in the anterior chamber after enucleation of the eye.
(6) In 52 infertile patients, laparoscopy demonstrated enlarged ovaries (maximum diameter 3.5 to 5 cm) with a smooth whitish surface and no mature follicles, corpora lutea, or other cysts.
(7) The patient initially responded to topical steroids, but developed a whitish capsular plaque through to represent possible Propionibacterium acnes endophthalmitis.
(8) Laparotomy revealed a firm, granular, whitish mass involving the pancreas.
(9) Physical examination was unremarkable except that whitish fluid could be expressed from both breasts.
(10) In patients with this disturbance, the retinal opacification and the visual disturbance are transient, but the tiny depression in the retina with its whitish border is permanent.
(11) A dystrophy of the eye fundi was observed (whitish puncta of the macula); except for the "almond shaped eyes", there was no obvious dismorphism.
(12) On endoscopy, the colour of oesophageal mucosa was normal in 28 and whitish pale in 2 cases.
(13) The tumor is elevated and characterized by a central punched-out area filled with amorphous whitish material.
(14) The lesions produced with a power of 200 mW were characterized by small whitish spots surrounded by grayish rings and retinochoroidal adhesions were produced by proliferated cells.
(15) Colonies of the mutant grown at room temperature did not show the whitish cotton-like morphology typical of the mycelial form of the parental strain.
(16) Of all sites studied by the staining method, H. pylori was detected at the highest frequency in the whitish exudate.
(17) It appeared as a uniform and smooth whitish layer with a thickness proportional to the duration of placement.
(18) The signs of his disease were exsudative retinal detachment with shifting fluid, rip of the retinal pigmentepithelium and a mass of whitish-yellowish subretinal protein.
(19) During laparotomy the liver was enlarged, hard, with multiple whitish nodules on its surgace but was otherwise normal.
(20) Three patients presented an unilateral whitish cloudiness of the corneal epithelium which reduced the vision considerably.