Cerium: An element of the rare earth family of metals. It has the atomic symbol Ce, atomic number 58, and atomic weight 140.12. Cerium is a malleable metal used in industrial applications.Cerium Radioisotopes: Unstable isotopes of cerium that decay or disintegrate emitting radiation. Ce atoms with atomic weights 132-135, 137, 139, and 141-148 are radioactive cerium isotopes.Cerium Isotopes: Stable cerium atoms that have the same atomic number as the element cerium, but differ in atomic weight. Ce-136, 138, and 142 are stable cerium isotopes.Metal Nanoparticles: Nanoparticles produced from metals whose uses include biosensors, optics, and catalysts. In biomedical applications the particles frequently involve the noble metals, especially gold and silver.Metals, Rare Earth: A group of elements that include SCANDIUM; YTTRIUM; and the LANTHANOID SERIES ELEMENTS. Historically, the rare earth metals got their name from the fact that they were never found in their pure elemental form, but as an oxide. In addition they were very difficult to purify. They are not truly rare and comprise about 25% of the metals in the earth's crust.Beta Particles: High energy POSITRONS or ELECTRONS ejected from a disintegrating atomic nucleus.Strontium Radioisotopes: Unstable isotopes of strontium that decay or disintegrate spontaneously emitting radiation. Sr 80-83, 85, and 89-95 are radioactive strontium isotopes.Strontium Isotopes: Stable strontium atoms that have the same atomic number as the element strontium, but differ in the atomic weight. Sr-84, 86, 87, and 88 are the stable strontium isotopes.Radioisotopes: Isotopes that exhibit radioactivity and undergo radioactive decay. (From Grant & Hackh's Chemical Dictionary, 5th ed & McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Radiation Dosage: The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv).Radiometry: The measurement of radiation by photography, as in x-ray film and film badge, by Geiger-Mueller tube, and by SCINTILLATION COUNTING.Receptor, Cannabinoid, CB1: A subclass of cannabinoid receptor found primarily on central and peripheral NEURONS where it may play a role modulating NEUROTRANSMITTER release.Nanoparticles: Nanometer-sized particles that are nanoscale in three dimensions. They include nanocrystaline materials; NANOCAPSULES; METAL NANOPARTICLES; DENDRIMERS, and QUANTUM DOTS. The uses of nanoparticles include DRUG DELIVERY SYSTEMS and cancer targeting and imaging.Silicon: A trace element that constitutes about 27.6% of the earth's crust in the form of SILICON DIOXIDE. It does not occur free in nature. Silicon has the atomic symbol Si, atomic number 14, and atomic weight [28.084; 28.086].Particle Size: Relating to the size of solids.Micro-Electrical-Mechanical Systems: A class of devices combining electrical and mechanical components that have at least one of the dimensions in the micrometer range (between 1 micron and 1 millimeter). They include sensors, actuators, microducts, and micropumps.Silicon Compounds: Inorganic compounds that contain silicon as an integral part of the molecule.Formularies as Topic: Works about lists of drugs or collections of recipes, formulas, and prescriptions for the compounding of medicinal preparations. Formularies differ from PHARMACOPOEIAS in that they are less complete, lacking full descriptions of the drugs, their formulations, analytic composition, chemical properties, etc. In hospitals, formularies list all drugs commonly stocked in the hospital pharmacy.Computer Security: Protective measures against unauthorized access to or interference with computer operating systems, telecommunications, or data structures, especially the modification, deletion, destruction, or release of data in computers. It includes methods of forestalling interference by computer viruses or so-called computer hackers aiming to compromise stored data.Economics, Pharmaceutical: Economic aspects of the fields of pharmacy and pharmacology as they apply to the development and study of medical economics in rational drug therapy and the impact of pharmaceuticals on the cost of medical care. Pharmaceutical economics also includes the economic considerations of the pharmaceutical care delivery system and in drug prescribing, particularly of cost-benefit values. (From J Res Pharm Econ 1989;1(1); PharmacoEcon 1992;1(1))Visual Acuity: Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.Academies and Institutes: Organizations representing specialized fields which are accepted as authoritative; may be non-governmental, university or an independent research organization, e.g., National Academy of Sciences, Brookings Institution, etc.Drug Industry: That segment of commercial enterprise devoted to the design, development, and manufacture of chemical products for use in the diagnosis and treatment of disease, disability, or other dysfunction, or to improve function.Research Support, U.S. GovernmentAerospace Medicine: That branch of medicine dealing with the studies and effects of flight through the atmosphere or in space upon the human body and with the prevention or cure of physiological or psychological malfunctions arising from these effects. (from NASA Thesaurus)Metals: Electropositive chemical elements characterized by ductility, malleability, luster, and conductance of heat and electricity. They can replace the hydrogen of an acid and form bases with hydroxyl radicals. (Grant & Hackh's Chemical Dictionary, 5th ed)Nuclear Reactors: Devices containing fissionable material in sufficient quantity and so arranged as to be capable of maintaining a controlled, self-sustaining NUCLEAR FISSION chain reaction. They are also known as atomic piles, atomic reactors, fission reactors, and nuclear piles, although such names are deprecated. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Zirconium: Zirconium. A rather rare metallic element, atomic number 40, atomic weight 91.22, symbol Zr. (From Dorland, 28th ed)Industry: Any enterprise centered on the processing, assembly, production, or marketing of a line of products, services, commodities, or merchandise, in a particular field often named after its principal product. Examples include the automobile, fishing, music, publishing, insurance, and textile industries.Internet: A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.User-Computer Interface: The portion of an interactive computer program that issues messages to and receives commands from a user.Computer Graphics: The process of pictorial communication, between human and computers, in which the computer input and output have the form of charts, drawings, or other appropriate pictorial representation.Isotopes: Atomic species differing in mass number but having the same atomic number. (Grant & Hackh's Chemical Dictionary, 5th ed)Isotope Labeling: Techniques for labeling a substance with a stable or radioactive isotope. It is not used for articles involving labeled substances unless the methods of labeling are substantively discussed. Tracers that may be labeled include chemical substances, cells, or microorganisms.Hafnium: Hafnium. A metal element of atomic number 72 and atomic weight 178.49, symbol Hf. (From Dorland, 28th ed)Metals, Alkaline Earth: Metals that constitute the group 2 (formerly group IIa) of the periodic table.Luminescence: Emission of LIGHT when ELECTRONS return to the electronic ground state from an excited state and lose the energy as PHOTONS. It is sometimes called cool light in contrast to INCANDESCENCE. LUMINESCENT MEASUREMENTS take advantage of this type of light emitted from LUMINESCENT AGENTS.Strontium: An element of the alkaline earth family of metals. It has the atomic symbol Sr, atomic number 38, and atomic weight 87.62.X-Ray Intensifying Screens: Screens which absorb the energy in the x-ray beam that has penetrated the patient and convert this energy into a light pattern which has as nearly as possible the same information as the original x-ray beam. The more light a screen produces for a given input of x-radiation, the less x-ray exposure and thus shorter exposure time are needed to expose the film. In most film-screen systems, the film is sandwiched between two screens in a cassette so that the emulsion on each side is exposed to the light from its contiguous screen.Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Europium: Europium. An element of the rare earth family of metals. It has the atomic symbol Eu, atomic number 63, and atomic weight 152. Europium is used in the form of its salts as coatings for cathode ray tubes and in the form of its organic derivatives as shift reagents in NMR spectroscopy.Organic Chemicals: A broad class of substances containing carbon and its derivatives. Many of these chemicals will frequently contain hydrogen with or without oxygen, nitrogen, sulfur, phosphorus, and other elements. They exist in either carbon chain or carbon ring form.Water Pollutants, Chemical: Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water.Chemistry, Organic: The study of the structure, preparation, properties, and reactions of carbon compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Orthodontic Appliances: Devices used for influencing tooth position. Orthodontic appliances may be classified as fixed or removable, active or retaining, and intraoral or extraoral. (Boucher's Clinical Dental Terminology, 4th ed, p19)Soil Pollutants: Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading.Pentanones: 5-carbon straight-chain or branched-chain ketones.Sodium Dodecyl Sulfate: An anionic surfactant, usually a mixture of sodium alkyl sulfates, mainly the lauryl; lowers surface tension of aqueous solutions; used as fat emulsifier, wetting agent, detergent in cosmetics, pharmaceuticals and toothpastes; also as research tool in protein biochemistry.Molecular Weight: The sum of the weight of all the atoms in a molecule.Scattering, Radiation: The diversion of RADIATION (thermal, electromagnetic, or nuclear) from its original path as a result of interactions or collisions with atoms, molecules, or larger particles in the atmosphere or other media. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Phosphates: Inorganic salts of phosphoric acid.Phosphoric Acids: Inorganic derivatives of phosphoric acid (H3PO4). Note that organic derivatives of phosphoric acids are listed under ORGANOPHOSPHATES.

Salmonella pathogenicity island 2-dependent evasion of the phagocyte NADPH oxidase. (1/177)

A type III protein secretion system encoded by Salmonella pathogenicity island 2 (SPI2) has been found to be required for virulence and survival within macrophages. Here, SPI2 was shown to allow Salmonella typhimurium to avoid NADPH oxidase-dependent killing by macrophages. The ability of SPI2-mutant bacteria to survive in macrophages and to cause lethal infection in mice was restored by abrogation of the NADPH oxidase-dependent respiratory burst. Ultrastructural and immunofluorescence microscopy demonstrated efficient localization of the NADPH oxidase in the proximity of vacuoles containing SPI2-mutant but not wild-type bacteria, suggesting that SPI2 interferes with trafficking of oxidase-containing vesicles to the phagosome.  (+info)

Improvement of efficiency of the Ce(IV)-induced DNA scission--relationship between the kinetic parameters (k(cat) and Km) and the DNA structure. (2/177)

The Michaelis constant (Km) for double-stranded DNA, single-stranded DNA, and dinucleotide hydrolysis by Ce(IV) ion are 4.4, 15, and more than 40 mM, respectively. The order of the k(cat), however, is dinucleotide >> oligonucleotides. Not only the improvement of k(cat) but also that of Km is important for the design of an efficient artificial nuclease.  (+info)

Rapid determination of cyanide and azide in beverages by microdiffusion spectrophotometric method. (3/177)

A rapid screening method was developed for the determination of the toxic volatile anions, cyanide and azide, in beverages. This method consisted of a microdiffusion extraction combined with spectrophotometry using the Konig cyanide reaction and ferric azide complex formation in conjugation with cerium azide oxido-reduction. The time required to achieve full recovery in the extraction of hydrogen cyanide and hydrazoic acid from samples was considerably shortened by increasing the diffusion temperature from 25 degrees C to 40 degrees C. The time required to achieve saturated color development in the Konig cyanide reaction was also shortened by increasing incubation temperature to 40 degrees C. The interference in both azide color reactions was examined for volatile compounds. Cyanide interfered only in the case of ferric azide complex formation. Sulfide, sulfate, nitrite, and acetic acid interfered in both the color reactions. The established method gave a detection limit of 6 microM for cyanide and 0.5mM for azide, and it required only 1 h to determine both anions. Cyanide and azide disappeared by evaporation from beverages during 25 degrees C storage under open conditions in a pH-dependent manner as a function of their respective pKa values of 9.2 and 4.6.  (+info)

Anoxic stress leads to hydrogen peroxide formation in plant cells. (4/177)

Hydrogen peroxide (H2O2) was detected cytochemically in plant tissues during anoxia and re-oxygenation by transmission electron microscopy using its reaction with cerium chloride to produce electron dense precipitates of cerium perhydroxides. Anoxia-tolerant yellow flag iris (Iris pseudacorus) and rice (Oryza sativa), and anoxia-intolerant wheat (Triticum aestivum) and garden iris (Iris germanica) were used in the experiments. In all plants tested, anoxia and re-oxygenation increased H2O2 in plasma membranes and the apoplast. In the anoxia-tolerant species the response was delayed in time, and in highly tolerant I. pseudacorus plasma membrane associated H2O2 was detected only after 45 d of oxygen deprivation. Quantification of cerium precipitates showed a statistically significant increase in the amount of H2O2 caused by anoxia in wheat root meristematic tissue, but not in the anoxia-tolerant I. pseudacorus rhizome parenchyma. Formation of H2O2 under anoxia is considered mainly an enzymatic process (confirmed by an enzyme inhibition analysis) and is due to the trace amount of dissolved oxygen (below 10(-5) M) present in the experimental system. The data suggest oxidative stress is an integral part of oxygen deprivation stress, and emphasize the importance of the apoplast and plasma membrane in the development of the anoxic stress response.  (+info)

Feasibility studies in rats fed heavy metals as multiple nutrient markers. (5/177)

The nitrates of five metals (cerium, terbium, ytterbium, lutetium, and iridium) were fed to rats to determine the feasibility of their use as nonabsorbed, multiple markers for recovery, passage, and indirect apparant digestibility studies. Fecal recovery of a single oral dose was completed within 72 hours. When the salts were mixed into the diet, 48-96 hours was required to establish a steady-state concentration of markers in feces. The diurnal variation of cerium in feces was found to be considerable when it was fed twice daily as a single dose prior to each feeding. When incorporated into the diet, negligible diurnal variation in fecal concentration was noted with lutetium, and small variation was seen with other metals. In nutrient apparent digestibility studies, good agreement was generally found between direct and indirect multiple marker methods. Experiments with a daily intake marker suggest that cerium was not satisfactory as a multiple marker in which neutron activation analysis was the method of determination.  (+info)

Induction of early bolting in Arabidopsis thaliana by triacontanol, cerium and lanthanum is correlated with increased endogenous concentration of isopentenyl adenosine (iPAdos). (6/177)

The effects of triacontanol (TRIA), applied singly or in combination with cerium nitrate and lanthanum nitrate, on bolting of Arabidopsis thaliana were studied. Triacontanol (0.1 to 0.6 microM) added to the culture medium induced early bolting. TRIA (0.3 microM) applied with low concentrations of cerium and lanthanum caused a synergistic stimulation of bolting. In medium containing 0.3 microM TRIA, 0.1 microM cerium nitrate and 0.1 mM lanthanum nitrate, 82% of the plants bolted 20 d after seed sowing compared to only 8.6% in basal medium and 47.8% in medium with TRIA only. The changes in the endogenous concentrations of total cytokinins of the isopentenyl adenine (IP) subfamily in the leaf and root tissues were correlated with TRIA-induced early bolting. The combined treatment of TRIA (0.3 microM), cerium nitrate (0.1 microM) and lanthanum nitrate (0.1 mM) resulted in a significant increase in the endogenous concentrations of total cytokinins of the IP subfamily in the root and leaf tissues compared to plants growing in the basal medium and medium with TRIA. The exogenous application of six natural cytokinins to the plants revealed that only isopentenyl adenosine (iPAdos) was as effective as TRIA on floral bud formation. iPAdos was also found to have similar effects as TRIA on root growth and reproductive growth. These results suggest a correlation between the early bolting induced by TRIA, cerium and lanthanum and the production of higher concentrations of endogenous iPAdos.  (+info)

X-ray imaging of shock waves generated by high-pressure fuel sprays. (7/177)

Synchrotron x-radiography and a fast x-ray detector were used to record the time evolution of the transient fuel sprays from a high-pressure injector. A succession of 5.1-microsecond radiographs captured the propagation of the spray-induced shock waves in a gaseous medium and revealed the complex nature of the spray hydrodynamics. The monochromatic x-radiographs also allow quantitative analysis of the shock waves that has been difficult if not impossible with optical imaging. Under injection conditions similar to those found in operating engines, the fuel jets can exceed supersonic speeds and result in gaseous shock waves.  (+info)

Measurement of dissolved oxygen based on enhanced cerium(IV) chemiluminescence. (8/177)

The reaction of Ce(IV) with pyrogallol caused chemiluminescence, which was enhanced by dissolved oxygen. Dissolved oxygen in water was able to help in the determination by enhancing the chemiluminescence intensity. The limit of detection calculated from 3sigma was 43 micromol/dm3, and the relative standard deviation was 1.2% at 613 micromol/dm3 (n = 5). The results obtained for natural and tap water samples were compared with those provided by conventional methods; the agreement between them corroborated the usefulness of the proposed method. The chemiluminescence mechanism was studied by examining the effect of interference with Cl- and measuring the chemiluminescence spectrum. The chemiluminescence emitter, however, could not be identified.  (+info)

*Cerium

Ceria is the most widely used compound of cerium. The main application of ceria is as a polishing compound, for example in ... Water should not be used to stop cerium fires, as cerium reacts with water to produce hydrogen gas. Workers exposed to cerium ... Cooling below approximately −160 °C will start formation of α-cerium but this is only from remaining γ-cerium. β-cerium does ... Greenwood and Earnshaw, p. 1228 Klaus Reinhardt and Herwig Winkler in "Cerium Mischmetal, Cerium Alloys, and Cerium Compounds" ...

*Cerium acetylacetonate

... is used in the formation of mesoporous nanocrystalline ceria using the sol-gel process. The cerium ... Cerium acetylacetonate at American Elements "Formation of mesoporous nanocrystalline ceria from cerium nitrate, acetate or ... Cerium acetylacetonate can also be used along with gadolinium acetylacetonate to synthesize gadolinia-doped ceria (GDC) gel ... Cerium acetylacetonate is a compound with formula Ce(C5H7O2)3. It is the cerium complex of acetylacetone. ...

*Cerium hexaboride

... (CeB6, also called cerium boride, CeBix, CEBIX, and (incorrectly) CeB) is an inorganic chemical, a boride of ... The principal use of cerium hexaboride is a coating of hot cathodes, or hot cathodes made of cerium hexaboride crystals. It ... Cerium boride cathodes show lower evaporation rate at 1700 K than lanthanum boride, but it becomes equal at 1850 K and higher ... Cerium boride cathodes have one and half the lifetime of lanthanum boride, due to its higher resistance to carbon contamination ...

*Cerium oxalate

Cerium(III) oxalate or cerous oxalate is the inorganic cerium salt of oxalic acid. It is a white crystalline solid with the ... Cerium salts increase the blood coagulation rate, and exposure to cerium salts can cause sensitivity to heat. Oxalates are ... Cerium(III) oxalate irritates skin and mucous membranes, and is a strong irritant to eyes. If it gets into the eyes, there is a ... Cerium(III) oxalate is used as an antiemetic. It has been identified as part of the invisible ink that was used by Stasi ...

*Cerium nitrate

Basic cerium(IV) nitrate has the formula Ce(NO3)3.OH.3H2O. It also forms upon evaporation of solutions of cerium(IV) in nitric ... Cerium nitrate refers to a family of nitrates of cerium in the three or four oxidation state. Often these compounds contain ... Double nitrates of cerium also exist. Anhydrous cerous nitrate, also called cerium(III) nitrate, is the anhydrous salt with the ... Each cerium atom is surrounded by the oxygen atoms of five bidentate nitrate groups and two water oxygen atoms. It can be grown ...

*Cerium anomaly

The cerium anomaly, in geochemistry, is the phenomenon whereby cerium (Ce) concentration is either depleted or enriched in a ... Cerium Europium Europium anomaly Lanthanides Rare-earth elements Stratigraphic trends in cerium anomaly in authigenic marine ... Cerium can occur in nature as a 3+ or 4+ ion and is a compatible element (at 4+ valency) in zircon and less commonly in silica ... The cerium anomaly relates to the decrease in solubility, which accompanies the oxidation of Ce(III) to Ce(IV). Under reducing ...

*Cerium hydroxide

... may refer to: Cerium(III) hydroxide, Ce(OH)3, cerium trihydroxide Cerium(IV) hydroxide, Ce(OH)4, cerium ...

*Cerium oxide

... may refer to either of the following: Cerium(III) oxide, Ce2O3 Cerium(III,IV) oxide, Ce3O4 (dark blue) Cerium(IV) ...

*Cerium(III) iodide

... (CeI3) is the compound formed by cerium(III) cations and iodide anions. The molecular weight of the compound ... Cerium(III) iodide is used as a pharmaceutical intermediate. Melting Point:766 °C Physical state: solid Solubility: soluble in ... water CID 123265 from PubChem "7790-87-6 - Cerium(III) iodide, ultra dry, 99.9% (REO) - Cerium triiodide - 13641 - Alfa Aesar ... of cerium(III) iodide is 520.83g/mole. ...

*Cerium(IV) oxide

... is formed by the calcination of cerium oxalate or cerium hydroxide. Cerium also forms cerium(III) oxide, Ce 2O ... Cerium(IV) oxide, also known as ceric oxide, ceric dioxide, ceria, cerium oxide or cerium dioxide, is an oxide of the rare- ... McGraw-Hill, 2002, ISBN 0-07-049439-8 Klaus Reinhardt and Herwig Winkler in "Cerium Mischmetal, Cerium Alloys, and Cerium ... The cerium(IV) oxide-cerium(III) oxide cycle or CeO2/Ce2O3 cycle is a two step thermochemical water splitting process based on ...

*Cerium(III) chloride

... can be used as a starting point for the preparation of other cerium salts, such as the Lewis acid, cerium( ... Cerium(III) chloride (CeCl3), also known as cerous chloride or cerium trichloride, is a compound of cerium and chlorine. It is ... ISBN 3-13-103021-6. Johnson, C. R.; Tait, B. D. (1987). "A cerium(III) modification of the Peterson reaction: methylenation of ... The anhydrous halide may alternatively be prepared from cerium metal and hydrogen chloride. It is usually purified by high ...

*Cerium(IV) sulfate

... , also called ceric sulfate, is an inorganic compound. It exists as the anhydrous salt Ce(SO4)2 as well as a ... ISBN 0-8493-0487-3. Mariappan Periasamy, Ukkiramapandian Radhakrishnan "Cerium(IV) Ammonium Sulfate" Encyclopedia of Reagents ...

*Cerium(III) bromide

... is an inorganic compound with the formula CeBr3. This white hygroscopic solid is of interest as a component ... The compound has been known since at least 1899, when Muthman and Stützel reported its preparation from cerium sulfide and ...

*Cerium(III) methanesulfonate

Cerium Zinc-cerium battery Kreh, Robert P. (2001). "Cerium (III) Methanesulfonate". Encyclopedia of Reagents for Organic ... Cerium(III) methanesulfonate in solution is used as a precursor of electrogenerated cerium(IV), which is a strong oxidant and ... Cerium(III) methanesulfonate is a white salt, usually found as the dihydrate with the formula Ce(CH3SO3)3·2H2O that ... The same principle of Ce(IV) electrogeneration is the fundamental reaction in the positive half-cell of the zinc-cerium battery ...

*Cerium(III) hydroxide

... is a hydroxide of the rare-earth metal cerium. It is a pale white powder with the chemical formula Ce(OH) ... 3. Cerium(III) hydroxide is prepared by the reaction of hot water at 90 °C on cerium metal: 2 C e + 6 H 2 O → 90 o C 2 C e ( O ...

*Cerium uranium blue

... is the name given to solid solutions of cerium(IV) oxide, CeO2, and uranium(IV) oxide, UO2, of variable ... Cerium uranium blue was first obtained by heating together cerium sulfate and uranyl sulfate with an excess of magnesium ... Magneli, Arne; Kihlborg, Lars (1951). "On the Cerium Dioxide-Uranium Dioxide System and "Uranium Cerium Blue"" (PDF). Acta Chem ... A similar series of solid solutions are formed between cerium(IV) oxide and thorium oxide. The blue colour is due to an intense ...

*Cerium(III) carbonate

IUPAC name:Cerium tricarbonate. Other chemical names: Dicerium tricarbonate;Cerium(III) carbonate;Cerium carbonate;Cerous ... Cerium(III) carbonate Ce2(CO3)3, is the salt formed by cerium(III) cations and carbonate anions. Its pure form was not yet ... Cerium(III) carbonate is used in the production of cerium(III) chloride, and in incandescent lamps. http://www.endmemo.com/chem ... The molecular weight of the compound of cerium(III) carbonate is 460.2587g/mole. ...

*Isotopes of cerium

The isotopes of cerium range in atomic weight from 119 u (119Ce) to 157 u (157Ce). Abbreviations: EC: Electron capture IT: ... Naturally occurring cerium (58Ce) is composed of 4 stable isotopes: 136Ce, 138Ce, 140Ce, and 142Ce, with 140Ce being the most ...

*Cerium(III) sulfate

... , also called cerous sulfate, is an inorganic compound with the formula Ce2(SO4)3. It is one of the few ...

*Cerium(III) fluoride

... (or cerium trifluoride), CeF3, is an ionic compound of the rare earth metal cerium and fluorine. It ...

*Cerium(III) oxide

... , also known as cerium oxide, cerium trioxide, cerium sesquioxide, cerous oxide or dicerium trioxide, is an ... The cerium(IV) oxide-cerium(III) oxide cycle or CeO2/Ce2O3 cycle is a two step thermochemical water splitting process based on ... Cerium(III) oxide is produced by the reduction of cerium(IV) oxide with hydrogen at approximately 1,400 °C (2,550 °F) to make ... When there is a shortage of oxygen, cerium(IV) oxide is reduced by carbon monoxide to cerium(III) oxide: 2 CeO 2 + CO → Ce 2O 3 ...

*Zinc-cerium battery

Xie, Z.; Liu, Q.; Chang, Z.; Zhang, X. (2013). "The developments and challenges of cerium half-cell in zinc-cerium redox flow ... self-discharge was relatively slow at low concentrations of cerium and acid. Major installation of the zinc-cerium redox flow ... The positive electrolyte is a solution of cerium(III) methanesulfonate. The zinc-cerium redox flow battery was first proposed ... "Electrochemical behavior of carbon paper on cerium methanesulfonate electrolytes for zinc-cerium flow battery". Electrochimica ...

*Ammonium cerium(IV) sulfate

... is an inorganic compound with the formula (NH4)4Ce(SO4)4.2 H2O. It is an orange-colored solid. It ... A crystallographic study shows that the compound contains the Ce2(SO4)88− anion, where the cerium atoms are 9 coordinated by ... is a strong oxidant, the potential for reduction is about +1.44V. Cerium(IV) sulfate is a related compound. ...

*Cerio

... is a village in Álava, Basque Country, Spain. Coordinates: 42°51′N 2°35′W / 42.850°N 2.583°W / 42.850; -2.583. ...

*Edoardo Ceria

... (born 26 May 1995) is an Italian footballer who plays as a forward for Den Bosch. Ceria is a youth exponent from ... Edoardo Ceria at FootballDatabase.eu Edoardo Ceria at Soccerway. ... However, Ceria and Gouano remained in Juventus and Waalwijk ... In June 2014, the co-ownership of Barlocco, Ceria, Emmanuello and Cais were renewed. During the 2014-15 season, he played on ... In September 2013, Atalanta acquired half of the registration rights of Ceria (for €0.80 million) and Prince-Désir Gouano (€ ...
The rise of antimicrobial resistance demands the development of more rapid screening methods for the detection of antimicrobial resistance in clinical samples to both give the patient the proper treatment and expedite the treatment of patients. Cerium oxide nanoparticles may serve a useful role in diagnostics due to their ability to exist in a mixed valence state and act as either oxidizing agents or reducing agents. Considering that cerium oxide nanoparticles have been shown to shift in absorbance upon oxidation, a useful method of antimicrobial resistance detection could be based on the oxidation of cerium oxide nanoparticles. Herein, an assay is described whereby cerium oxide nanoparticle oxidation is a function of glucose metabolism of bacterial samples in the presence of an antimicrobial agent. Cerium oxide nanoparticles were shown to have an absorbance in the range of 395nm upon oxidation by hydrogen peroxide whereas mixed valence cerium oxide nanoparticles lacked an absorbance around 395nm. In
SEE PDF Full Length Article Writers: M.H.M.T. Assumpção; A. Moraes; R.F.B. De Souza; M.L. Calegaro; M.R.V. Lanza; E.R. Leite; M.A.L. Cordeiro; P. Hammer; M.C. Santos. Keywords: Oxygen reduction reaction; Electrogeneration of hydrogen peroxide; Cerium oxide nanoparticles. Abstract: This work describes the influence of the preparation method and the carbon support using a low content of cerium oxide nanoparticles (CeO2/C 4%) on H2O2 electrogeneration via the oxygen reduction reaction (ORR). For this purpose, the polymeric precursor (PPM) and sol-gel (SGM) methods with Vulcan XC 72R (V) and Printex L6 (P) supports were employed. The materials were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The XRD analysis identified two phases comprising CeO2 and CeO2−x. The smallest mean crystallite size was exhibited for the 4% CeO2/C_PPM_P material, which was estimated using the Debye-Scherrer equation to be 6 nm and 4 nm for ...
A simple enzyme-free spectrophotometric detection of hydrogen peroxide is demonstrated based on its colorimetric reaction with oxygen deficient cerium oxide nanoparticles (CNPs). This colorimetric sensitivity of CNPs towards H2O2 increases significantly with decreasing crystallite size due to an increase in
Cerium Oxide Nanoparticles / Nanopowder/ACM1306383 can be provided in Alfa Chemistry. We are dedicated to provide our customers the best products and services.
Cerium dioxide nanoparticles (CeO2 ENPs) are on the priority list of nanomaterials requiring evaluation. We performed in vitro assays on mature mouse oocytes incubated with CeO2 ENPs to study (1) physicochemical biotransformation of ENPs in culture medium; (2) ultrastructural interactions with follicular cells and oocytes using Transmission Electron Microscopy (TEM); (3) genotoxicity of CeO2 ENPs on follicular cells and oocytes using a comet assay. DNA damage was quantified as Olive Tail Moment. We show that ENPs aggregated, but their crystal structure remained stable in culture medium. TEM showed endocytosis of CeO2 ENP aggregates in follicular cells. In oocytes, CeO2 ENP aggregates were only observed around the zona pellucida (ZP). The comet assay revealed significant DNA damage in follicular cells. In oocytes, the comet assay showed a dose-related increase in DNA damage and a significant increase only at the highest concentrations. DNA damage decreased significantly both in follicular cells and in
The dynamic process of oxygen vacancy migration driven by the external electric field is directly observed at atomic scale in the cerium oxides (CeO{sub 2}) thin film by in-situ transmission electron microscopy method. When a bias voltage of a proper value is applied across the CeO{sub 2} film, the oxygen vacancies are formed near the interface of CeO{sub 2}/anode, followed by their migration along the direction of the external electric field. The structural modulation occurs in the [110] zone axis due to the ordering of oxygen vacancies. The migration of oxygen vacancies results in the reversible structural transformation, i.e., releasing and storing oxygen processes in CeO{sub 2}, which is of great significance for the ionic and electronic applications of the cerium oxides materials, such as oxygen pump, gas sensor, resistive random access memory, etc. ...
Cerium (Ce) is becoming a popular metal for use in electrochemical applications. When in the form of cerium oxide (CeO2), Ce can exist in both 3 + and 4 + valence states, acting as an ideal catalyst. Previous in vitro and in vivo evidence have demonstrated that CeO2 has either anti- or pro-oxidant properties, possibly due to the ability of the nanoparticles to transition between valence states. Therefore, we chose to chemically modify the nanoparticles to shift the valence state toward 3+. During the hydrothermal synthesis process, 10 mol% gadolinium (Gd) and 20 mol% Gd, were substituted into the lattice of the CeO2 nanoparticles forming a perfect solid solution with various A-site valence states. These two Gd-doped CeO2 nanoparticles were compared to pure CeO2 nanoparticles. Preliminary characteristics indicated that doping results in minimal size and zeta potential changes but alters valence state. Following characterization, male Sprague-Dawley rats were exposed to 0.5 or 1.0 mg/kg ...
Alpha Chemika is a leading Manufacturer Exporter & Supplier of Cerium Acetate in Mumbai Maharashtra India, Exporter of Cerium Acetate in Maharashtra, Wholesale Cerium Acetate Supplier in Mumbai, Cerium Acetate Manufacturing Company in India.
0082]The CMP abrasive slurry according to the present invention may be stored as a single-liquid abrasive slurry containing cerium oxide particles, a dispersant, a water-soluble polymer having amino groups on the side chains and water. Alternatively, it may be stored as a two-liquid abrasive slurry consisting of a cerium oxide slurry (liquid A) containing cerium oxide particles, a dispersant and water and a supplementary solution (liquid B) containing a water-soluble polymer having amino groups on the side chains and water, or as a two-liquid abrasive slurry consisting of a cerium oxide slurry (liquid A) containing cerium oxide particles, a dispersant and water and a supplementary solution (liquid C) containing a water-soluble polymer having amino groups on the side chains, water and a water-soluble nonionic compound. Both the single-liquid abrasive slurry and the two-liquid abrasive slurry give favorable stabilized properties. When the abrasive slurry is stored in a two-liquid abrasive slurry, ...
Vision Expo East, New York 18th - 20th March Cerium Product USA Inc are proud to be exibiting our wide range of products and services at this years New York Vison Expo East Show, please visit us at our stand LP 1875.. Cerium Optical Products will be attending this years Vision Expo in New york to showcase its range of equipment, products and services for both laboratories and optical retailers, developed at its HQ in Tenterden, KentEngland.. Ceriums range extends from its Alphamatic rimless drill system and extensive lens production consumable range including Shades dyes, now in user-friendly, environment-friendly, space and cost-saving Ecobag presentation: just open the colorful outer and drop the soluble inner bag whole into the dye bath.. Cerium now also offers a Hi-Index Shades dye collection specially formulated to give reliable, high-quality results on substrates up to 1.67 index. Their plastic lens polish choices were recently augmented by their own free-form friendly, all-substrates ...
Cerium Isotopes: Stable cerium atoms that have the same atomic number as the element cerium, but differ in atomic weight. Ce-136, 138, and 142 are stable cerium isotopes.
Alfa Aesar™ Cerium(III) oxalate hydrate, 99% 25g Alfa Aesar™ Cerium(III) oxalate hydrate, 99% Inorganic Cerium Compounds
Rare Earth Polishing Powder Cerium Oxide with Lanthanum Elements picture from Ganzhou Wanfeng Advanced Materials Technology Co., Ltd. view photo of Polishing Powder, Rare Earth Powder, Red Powder.Contact China Suppliers for More Products and Price.
China SGS Pass White Powder Lanthanum Oxide, Find details about China Cerium Oxide, Lanthanum Oxide from SGS Pass White Powder Lanthanum Oxide - Baotou Rare Earth Huaxing Technology Co., Ltd.
WCA-2 BENSITENG China, WCA-2 Cerium Oxide polishing powder Color white Parameter REO≥90% CeO2/REO≥65% D50 1.5-2.0um D90 ≤3.2um Suspension Good Packing 20kg/drum Application: Excellent
Solvays CERIUM OXIDE HSA 8 is used for Chemical Mechanical Planarization (CMP) for the manufacture of semi-conductors.CMP is a process to planarize the relief on the surface of silicon oxide, polysilicon an metal layers. It is used to planarize these layers in order to prepare them for the lithographic steps .
TABLE-US-00002 TABLE 2 Example No. 1 2 3 4 5 Glass material G1 G1 G2 G2 G2 Plate thickness 1 0.85 0.85 0.85 0.85 before lapping (mm) Lapping First Diamond Diamond Diamond Diamond Diamond process stage pellets #1000 pad 4 μm pad 9 μm pad 9 μm pad 9 μm Processing pressure (kPa) 4 6 4 4 4 Revolution speed (rpm) 25 30 30 30 30 Processing rate (μm/min) 14 10 25 25 25 Ra after processing (μm) 0.5 0.08 0.18 0.18 0.18 Plate thickness 0.785 0.785 0.785 0.785 0.785 after lapping (mm) Second Diamond Diamond Diamond Diamond Diamond stage pad 4 μm pad 2 μm pad 4 μm pad 4 μm pad 4 μm Processing pressure (kPa) 4 5 4 4 4 Revolution speed (rpm) 30 30 30 30 30 Processing rate (μm/min) 6 5 7 7 7 Ra after processing (μm) 0.04 0.012 0.05 0.05 0.05 Plate thickness 0.675 0.675 0.675 0.675 0.675 after lapping (mm) Polishing First Hard urethane Hard urethane Hard urethane Hard urethane Hard urethane process stage foam foam foam foam foam Polishing agent; Cerium oxide Cerium oxide Cerium oxide Cerium oxide ...
Quality, consistency and innovative solutions to special polishing requirements are ensured not only through ISO 9001 certification but also because of our quality control and R&D departments. The newly completed multi-million dollar expansion program assures our customers high quality products with prompt deliveries.. This section offers general and specific information on most successful and most popular Cerium Oxide polishing powders for the industry. Numerous other grades are available in response to the particular needs of our customers.. CERITE ...
Vendita di macchine per la lavorazione delle pietre preziose, strumenti per analisi gemmologica e corsi di gemmologia in Italia e allestero, per orafi, gioiellieri, gemmologi, appassionati al mondo delle pietre - Cavalese, Trento, Italy
Based on these very promising results, our supplemental investigation proposes to conduct studies that will enable the filing of an Investigational New Drug application, to further move CeONP down the drug development pipeline. Prior to a drug being tested for human use, safety, toxicity, and pharmacokinetic studies need to be performed to assure the drug will be relatively safe. We will conduct these studies in our supplemental investigation. Immediate safety and toxicity will be assessed at two doses. Additionally, we will determine how CeONP are distributed in the body and determine what organs they accumulate in. We will examine tissues for histopathology and adverse effects. Further, since nanoparticles may persist in the system after initial delivery, we will also examine histopathology and biodistribution at six months after administration ...
Cerium oxide nanoparticles (nanoceria) are promising materials for intracellular oxygen free radical scavenging providing a potential therapy for reactive oxygen species (ROS)-mediated inflammatory processes. In this study rhombohedral-shaped nanoceria were synthesized by flame spray pyrolysis with tuneable particle diameters between 3 and 94 nm by changing the liquid precursor flow rate. Monocytes and macrophages are major players in inflammatory processes as their production of ROS species has important downstream effects on cell signalling. Therefore, this study examined the ability of the nanoceria to be internalised by the human monocytic cell line, U937, and scavenge intracellular ROS. U937 cells activated in the presence of phorbol 12-myristate 13-acetate (PMA) were found to be more responsive to the nanoceria than U937 cells, which may not be surprising given the role of monocyte/macrophages in phagocytosing foreign material. The smaller particles were found to contain more crystal ...
Optical grade cerium for use on all quartz, agate and jasper. It also produces a great polish on petrified wood, coral, obsidian and man-made glasses including goldstone. Many people prefer cerium for tumbling feldspar materials such as moonstone, labradorite, sunstone and amazonite. 1.5 microns average particle siz
CNAS Pass White Powder Cerium Lanthanum Carbonate picture from Baotou Rare Earth Huaxing Technology Co., Ltd. view photo of Cerium, Lanthanum, Cerium Lanthanum Oxide Materials.Contact China Suppliers for More Products and Price.
Co3O4 promoted CeO2 nanocubes have been found to exhibit outstanding catalytic activity for the oxidation of diesel soot at low temperatures (50% soot conversion = 606 K). This remarkable performance is attributed to the superior reducible nature of cerium oxide and the preferential exposure of CeO2 (100) an RACI100: Celebrating Australian Chemistry
Purpose: We have previously shown that cerium oxide nanoparticles (nanoceria) catalytically scavenge Reactive Oxygen Species (ROS) and can long-term inhibit retinal degeneration in tubby mice and inhibit/regress neovascularization in vldlr-/- mice. However, the toxicity of nanoceria retention in the retina was unknown. The current study is proposed to address this point.. Methods: Wild type (C57BL/6J) mice at P30 were intravitreally injected with increasing doses of nanoceria (0.1mM, 0.3mM, 1mM, 3mM and 10mM) in 1µl saline. Saline injection and uninjected mice served as controls. Retinal structure, ONL (outer nuclear layer) thickness and cellular infiltration were analyzed using H & E stained slides at post injection (PI) 7h, 3d, 7d, 15d and 30d. Retinal function was evaluated with electroretinography at PI 30d. The fundus abnormality and angiogenesis were assessed with fundoscopy and fluorescence angiography. The expression of inflammatory cytokines and markers of activation of ...
This mineral comes from the nickel rich bauxite deposits at Nisi, Greece. The series is then complete with bastnasite (having near 100% fluorines) and hydroxylcarbonate (with near 100% hydroxides) as the two end members and hydroxylbastnasite as the intermediate member. The structure of the three minerals is made up of stacks of carbonate ion layers and Ce(OH, F) layers. The Ce(OH, F) layers form flat hexagonal sheets with each cerium bonded to three fluorines and visa-versa. The carbonate layers are more complex with angled carbonate triangular groups. The structure is closely studied because it is one of the few rare earth mineral structures that can accommodate variously sized cations. Hydroxylbastnasite (also spelled hydroxyl-bastnasite) has cerium, lanthanum and neodymium in its generalized formula but officially the mineral is divided into three minerals based on the predominant rare earth element found in specimens. There is Hydroxylbastnasite-(Ce) with a more accurate formula of (Ce, ...
Chengdu Beyond Chemical Co., Ltd.s, Cerium Carbonate -Ce2(CO3)3·XH2O. Cerium Carbonate -Ce2(CO3)3·XH2O wholesale, manufacturer and supplier. Visit for more information on high quality China products.
Increased viability of fibroblasts when pretreated with ceria nanoparticles during serum deprivation Francielli S Genier,1 Maximilian Bizanek,1 Thomas J Webster,1,2 Amit K Roy1,2 1Department of Chemical Engineering, Northeastern University, Boston, MA, USA; 2Wenzhou Institute of Biomaterials and Engineering (WIBE), Wenzhou University, Wenzhou, People’s Republic of China Abstract: Conditions of cellular stress are often the cause of cell death or dysfunction. Sustained cell stress can lead to several health complications, such as extensive inflammatory responses, tumor growth, and necrosis. To prevent disease and protect human tissue during these conditions and to avoid medication side effects, nanomaterials with unique characteristics have been applied to biological systems. This paper introduces the pretreatment in human dermal fibroblasts with cerium oxide nanoparticles during nutritional stress. For this purpose, human dermal fibroblast cells received cell culture media with concentrations of
Organocerium compounds are chemical compounds that contain one or more chemical bond between carbon and cerium. Organocerium chemistry is the corresponding science exploring properties, structure and reactivity of these compounds. In general, organocerium compounds are not isolable, and are rather studied in solution via their reactions with other species. There are notable exceptions, such as the Cp*3Ce(III) complex shown at right, but they are relatively rare. Complexes involving cerium of various oxidation states are known: though lanthanides are most stable in the +3 state, complexes of cerium(IV) have been reported. These latter compounds have found less widespread use due to their oxidizing nature, and the majority of literature regarding organometallic cerium complexes involves the +3 oxidation state. In particular, organocerium compounds have been developed extensively as non-basic carbon nucleophiles in organic synthesis. Because cerium is relatively non-toxic, they serve as an ...
We have studied (001) surface terminated cerium oxide nanoparticles grown on a ruthenium substrate using physical vapor deposition. Their morphology, shape, crystal structure, and chemical state are determined by low-energy electron microscopy and micro-diffraction, scanning probe microscopy, and synchrotron-based X-ray absorption spectroscopy. Square islands are identified as CeO 2 nanocrystals exhibiting a (001) oriented top facet of varying size; they have a height of about 7 to 10 nm and a side length between about 50 and 500 nm, and are terminated with a p(2 × 2) surface reconstruction. Micro-illumination electron diffraction reveals the existence of a coincidence lattice at the interface to the ruthenium substrate. The orientation of the side facets of the rod-like particles is identified as (111); the square particles are most likely of cuboidal shape, exhibiting (100) oriented side facets. Lastly, the square and needle-like islands are predominantly found at step bunches and may be ...
ESPI High Purity Metal Specialists since 1950 with a company mission to provide a reliable resource for researchers high purity metals, metal compounds and metal alloys for all major universities, international and domestic manufacturing companies and corporate R&D laboratories worldwide, as well as most U.S. government research laboratories. Also manufacturer of DeContam®, an aggressive water based, non-hazardous cleansing agent specifically formulated for the electronic, aerospace and nuclear industries.
ESPI High Purity Metal Specialists since 1950 with a company mission to provide a reliable resource for researchers high purity metals, metal compounds and metal alloys for all major universities, international and domestic manufacturing companies and corporate R&D laboratories worldwide, as well as most U.S. government research laboratories. Also manufacturer of DeContam®, an aggressive water based, non-hazardous cleansing agent specifically formulated for the electronic, aerospace and nuclear industries.
A free platform for explaining your research in plain language, and managing how you communicate around it - so you can understand how best to increase its impact.
A free platform for explaining your research in plain language, and managing how you communicate around it - so you can understand how best to increase its impact.
JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. ...
JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. ...
Zinc oxide nanoparticles enter agricultural fields through the application of biosolid (sewage sludge) fertilizers, which are composed of dried microbes previously used to process wastewater in treatment plants. Researchers discovered that soybean plants grown in soil containing zinc oxide particles bioaccumulate zinc, taking up the metal and distributing it throughout edible plant tissue. This caused a decrease in the food quality of the soybeans, and researchers indicate that it is uncertain whether the zinc that accumulates in the plants tissues is safe for human consumption in the form of ions and salts. "Juxtaposed against widespread land application of wastewater treatment biosolids to food crops, these findings forewarn of agriculturally associated human and environmental risks from the accelerating use of MNMs [manufactured nanomaterial]," the study notes. Cerium oxide nanoparticles can contaminate agricultural fields through exhaust fumes from farm equipment, a likely scenario given ...
Cerium (Ce, CeCl) and Erbium (Er, ErCl) are increasingly used in many electronic devices facilitating the alteration of their biogeochemical cycles (e.g. e-waste). Previous surveys stated that their environmental concentrations due to natural or anthropogenic events can reach up to 161 μg/L in ore mine effluent for Ce with a mean water concentration of 0.79 μg/L, and 11.9 μg/L
A Selective Catalytic Reduction (SCR) catalyst was prepared by slurry coating ZSM-5 zeolite onto a cordierite monolith, then subliming an iron salt onto the zeolite, calcining the monolith, and then dipping the monolith either into an aqueous solution of manganese nitrate and cerium nitrate and then calcining, or by similar treatment with separate solutions of manganese nitrate and cerium nitrate. The supported catalyst containing iron, manganese, and cerium showed 80 percent conversion at 113 degrees Celsius of a feed gas containing nitrogen oxides having 4 parts NO to one part NO.sub.2, about one equivalent ammonia, and excess oxygen; conversion improved to 94 percent at 147 degrees Celsius. N.sub.2O was not detected (detection limit: 0.6 percent N.sub.2O).
A silica-cerium mixed oxide (SiCe) was prepared by the sol-gel process, using tetraethylorthosilicate and cerium nitrate as precursors and obtained as an amorphous solid possessing a specific surface area of 459 m(2) g(-1). Infrared spectroscopy of the SiCe material showed the formation of the Si-O-Ce linkage in the mixed oxide. Scanning electron microscopy/energy dispersive spectroscopy indicated that the cerium oxide particles were homogenously dispersed on the matrix surface. X-ray diffraction and Si-29 solid-state nuclear magnetic resonance implied non-crystalline silica matrices with chemical environments that are typical for silica-based mixed oxides. X-ray photoelectron spectroscopy showed that Ce was present in approximately equal amounts of both the 3+ and 4+ oxidation states. Cyclic voltammetry data of electrode prepared from the silica-cerium mixed oxide showed a peak for oxidation of Ce3+/Ce4+ at 0.76 V and electrochemical impedance spectroscopy equivalent circuit indicated a porous ...
We report experimental results for the water-gas-shift assisted formation of ammonia from nitric oxide over alumina supported palladium, modified with various amounts (0-38 wt.%) of cerium. Static and transient flow reactor experiments were performed in order to identify the effects of temperature and the presence of oxygen on the activity for ammonia formation over the catalysts. The water-gas-shift reaction is enhanced with increasing cerium content, thus providing more hydrogen for ammonia formation. During transient operation at temperatures above 350 °C, a slight delay in ammonia formation is observed over the sample containing the highest cerium loading due to its (relatively) high dynamic oxygen storage capacity. At temperatures below 175 °C, N2O formation is preferred over NH3 formation. This work highlights the importance of balancing the effects that ceria influences when choosing the ceria loading for ammonia formation in passive-SCR applications.
Title:Spectrophotometer Aided Kinetic, Mechanistic and Thermodynamic Study of Ruthenium(III) Catalysed Oxidation of Esmolol by Sulphate of Cerium(IV) in Aqueous Sulphuric Acid Medium. VOLUME: 8 ISSUE: 1. Author(s):Amballa Ram Gopal* and Nowduri Annapurna. Affiliation:Departement of Engineering Chemistry, AUCE (A), Andhra University, Visakhapatnam, 530003, Departement of Engineering Chemistry, AUCE (A), Andhra University, Visakhapatnam, 530003. Keywords:Catalyst, kinetics, oxidation, ruthenium, spectrophotometry, zero order.. Abstract:Aim: The kinetics and mechanism of Ruthenium catalysed oxidation of Esmolol by Cerium(IV) sulphate in aqueous H2SO4 at a constant ionic strength of 0.50 mol dm-3 was studied spectrophotometrically. Observation: The reaction showed first order kinetics in both Cerium(IV) and Ruthenium(III) whereas fractional order in Esmolol. Addition of products showed no effect on the rate of the reaction. The main product, methyl-3-(4-(2-hydroxy-3-oxopropoxy) phenyl) propanoate, ...
The thermodynamic properties of surface ceria were investigated through equilibrium isotherms determined by flow-titration and coulometric-titration measurements on high-surface-area ceria and ceria supported on La-modified alumina (LA). While the surface area of pure ceria was found to be unstable under redox conditions, the extent of reduction at 873 K and a P(O2) of 1.6x10-26 atm increased with surface area. Because ceria/LA samples were stable, equilibrium isotherms were determined between 873 and 973 K on a 30-wt% ceria sample. Oxidation enthalpies on ceria/LA were found to vary with the extent of reduction, ranging from -500 kJ/mol O2 at low extents of reduction to near the bulk value of -760 kJ/mol O2 at higher extents. To determine whether +3 dopants could affect the oxidation enthalpies for ceria, isotherms were measured for Sm+3-doped ceria (SDC) and Y+3-doped ceria. These dopants were found to remove the phase transition observed in pure ceria below 973 K but appeared to have minimal effect
Analytical pure cerium nitrate (Ce(NO3)3·6H2O, China National Medicines Corporation Ltd., China, containing CeO2 39 wt.%), gadolinia (China National Medicines Corporation Ltd., China, 99.99wt.%), were used as starting materials. Cerium nitrate was dissolved in deionized water and the stoichiometric amount of gadolinia was dissolved in nitrate solution, then they were mixed together with citric acid solution (the mole ratio of cation to citric acid was 1/1.5). The pH value of the system was adjusted to 7-8 with ammonia solution under continuous stirring at 40oC and a homogeneous sol was formed. The sol was then heated at 120oC for about 1h; a white alveolate precursor was obtained. The precursor was then calcined at different temperatures (650oC, 750oC, and 850oC) to get the fnal composition powders. The obtained powders were pressed into pellets under a pressure of about 200MPa, and then sintered at different temperatures (1000-1300ºC) in air for 4h.. X-ray diffraction (XRD) analysis was ...
Cerium dioxide (CeO2) engineered nanoparticles (NP) are used as fuel-borne catalysts in off-road diesel engines, which can lead to exhaust emissions of respirable CeO2 NP. Other metal oxides may act as photo-catalysts which induce the generation of free radicals upon exposure to UV radiation or visible light. The current study tested the hypothesis that CeO2 NP would cause a dose-dependent phototoxic reaction in human-derived retinal pigment epithelial cells (ARPE-19) after UV exposure. Two samples of CeO2 NP (Alfa Aesar, 36-99 nm; NanoAmor, 6-60 nm) were suspended in cell culture media with 10% fetal bovine serum (FBS) at concentrations: 0, 3, 10, 20, 30, 55, 100ug/ml or 20ug/m1 TiO2 NP (Degussa P25; positive control) and administered to ARPE-19 cells grown in 24-well plates. Plates were either exposed to UV radiation (t=90min) or kept in the dark. After 24hrs, cell viability was determined with a calcein-AM/propidium iodide stain. Exposure to higher concentrations of CeO2 NP reduced cell ...
Article Nanoporous Pt|div style=display : inline; font-size:xx-small;|n+|/div|-CeO|div style=display : inline; font-size:xx-small;|x|/div| catalyst films grown on carbon substrates. Deposition of the Pt doped cerium oxide catalyst layers on carbo...
Pure CEO2 Polishing Powder About Particle Size 4.0um picture from Ganzhou Wanfeng Advanced Materials Technology Co., Ltd. view photo of Polishing Powder, Glass Polishing Powder, Cerium Oxide Polishing Powder.Contact China Suppliers for More Products and Price.
New nanotechnological products containing nano-sized particles (NPs) are already present in the market, but the results of nanotoxicological tests are not exhaustive and sometimes contradictory. The cytotoxicity tests ruled by chemical standards appear inadequate for the NPs very peculiar adhesive superficial properties that make their handling difficult and not immediately controllable. The present study highlights a new strategy to set up meaningful in-vitro tests to assess cells massive NPs uptake. A new approach was developed to obtain homogenous dispersion of NPs in-vitro. A lipid-based transfection technique (lipofection) was evaluated in two different cell lines: a mouse fibroblast embryonic cell line (NIH/3T3) and a human hepatoblastoma derived cells (HEP-G2), using gold (Au), iron (Fe3O4), cobalt oxide (Co) and cerium oxide (CeO2) NPs. The results indicate that after massive entrance of NPs due the lipofection technique, cells showed a stimulus in the proliferation, except for Co NPs. ...
Cerium Oxide Yttria doped Nanoparticles / Nanopowder CeO2/Y2O3 bulk & research qty manufacturer. Properties, SDS, Applications, Price. Free samples program. Term contracts & credit cards/PayPal accepted.
A novel ultrasensitive sensing system for the rapid detection of cytochrome c (Cyt C) was developed on the basis of an electrochemiluminescence (ECL) method. A nanocomposite biosensor was made of reduced graphene oxide decorated with cerium oxide/tris(2,2-bipyridyl)ruthenium(II)/chitosan (CeO₂NPs-RGO/ Ru(bpy)₃ ²⁺/CHIT) and used for this purpose. The ECL signal was produced by an electrochemical in ...
A lot of people have spent a lot of time studying the properties of gold and platinum nanoparticles that are used to catalyze the reaction of carbon monoxide with water to make hydrogen and carbon dioxide," said Maria Flytzani-Stephanopoulos, professor of chemical and biological engineering at Tufts and the lead researcher of the project. "We find that for this reaction over a cerium oxide catalyst carrying the gold or platinum, metal nanoparticles are not important. Only a tiny amount of the precious metal in non metallic form is needed to create the active catalyst. Our finding will help researchers find a cost-effective way to produce clean energy from fuel cells in the near future". She and her two colleagues, doctoral student Qi Fu and research professor Howard Saltsburg, were funded by a $300,000 three-year grant from the National Science Foundation, and have filed a provisional patent for their research. Their cutting-edge work in catalytic fuel processing to generate hydrogen for fuel ...
A series of silica supported Mn-Ce composite oxides with different Mn/Ce molar ratios were obtained by a simple and environment-friendly oxalate route. The physical and chemical properties were characterized by TG, BET, SEM, TEM, XPS and TPR analysis. All catalysts showed excellent activity towards deep oxidation of benzene. The effects of Mn/Ce ratio, calcination temperature on the structure and catalytic activity of catalysts were investigated. Catalyst from nitrate precursor was also characterized to compare the influence of different precursors. The 6Mn4Ce sample from oxalate route sintered at 400 A degrees C showed the maximum reaction rate of 0.50 mmol gcat(-1)h(-1); T90 of the catalyst is 216 A degrees C. The catalytic activity is related to surface area, pore size distribution, surface elemental species, particle size distribution and low temperature reducibility which may derived from synergistic effect between manganese and cerium oxide. Compared with nitrate precursors, catalyst from ...
Health,Glaucoma is an eye disease that can cause blindness and affects millio...Seal and his colleagues from North Dakota State University note in ...Seal and his team created a specialized cerium oxide nanoparticle a...The disease involves abnormally high pressure of the fluid inside t...Seal and a team of collaborators including Sanku Mallik of North D...,Nanoparticle,in,the,Treatment,of,,Glaucoma,medicine,medical news today,latest medical news,medical newsletters,current medical news,latest medicine news
Carbon-neutral re-use of CO2 has emerged as an alternative to burying the greenhouse gas underground. In a new study published today in Nature Energy, researchers from Stanford University and the Technical University of Denmark (DTU) show how electricity and an Earth-abundant catalyst can convert CO2 into energy-rich carbon monoxide (CO) better than conventional methods. The catalyst - cerium oxide - is much more resistant to breaking down. Stripping oxygen from CO2 to make CO gas is the first step in turning CO2 into nearly any liquid fuel and other products, like synthetic gas and plastics. The addition of hydrogen to CO can produce fuels like synthetic diesel and the equivalent of jet fuel. The team envisions using renewable power to make the CO and for subsequent conversions, which would result in carbon-neutral products ...
Ammonium Nitrate Ph, Ammonium Nitrate Ph Suppliers Directory - Find variety Ammonium Nitrate Ph Suppliers, Manufacturers, Companies from around the World at ph meter ,vaginal ph test strips ,digital ph meter, PH Meters
* found in: Ceric Ammonium Nitrate, Superior (ACS), Erbium Oxide, 99.9%, ERBIUM OXIDE, 99%, LUTETIUM PERCHLORATE, HYDRATED 50% SOLUTION, Lutetium Sulfate,..
A series of 2-arylquinazolines have been synthesized in moderate to excellent yields by one-pot tandem reaction of (2-aminophenyl)methanols, aldehydes and ceric ammonium nitrate (CAN). The utility of this transformation was demonstrated by its compatibility with a wide range of functional groups. Thus, the method represents a simple and practical procedure to access 2-arylquinazolines.
Get Eu (Europium) Compounds at Spectrum Chemical. SpectrumChemical.com carries a full line of fine chemicals, lab appliances and lab supplies. Spectrum Chemical offers fine chemicals in lab and production sizes.
In this model a gold ion is strongly attached to the support by being located at a cerium cation vacancy. This weakens the oxygen ion beside the cerium vacancy and creates a site for the activation of water to produce a surface OH group. This OH reacts with adsorbed CO to give CO2 and release hydrogen by the coupling of two hydrogen atoms on the metallic gold atoms in the gold nano-particle. Other ionic models for the water gas shift reaction have been proposed but the complexity of the reaction would seem to require a more complex active site such as proposed in the model above. ...
ECHAs dossier evaluation process covers compliance checks and the examination of testing proposals. By consulting the table below, you can find out whether ECHA has started to evaluate dossiers for a particular substance and follow the progress through the evaluation process. The table below displays the type, scope and status of the assessment undertaken for a given dossier. The decision date and the non-confidential version of the decision are published shortly after the decision has been adopted. Before publishing the non-confidential version of an adopted decision on its website, ECHA consults the addressees of the decision on this version. ECHA systematically removes any personal data from the non-confidential version of a decision. Some sections may also be redacted based on justified claims by registrants, regarding information confidential or deemed to harm their commercial interest if disclosed. Check the expandable boxes below for more details. ...
Two questions: what reaction forms between ammonium nitrate, black iron oxide, and sucrose; and a story related question.. So heres the whole story:. So I was playing around a few months ago and stumbled upon a mixture that generated something similar to Black Snakes (firework). I recently decided to demo this mixture to someone, but I could not find my notes about the experiment, so I decided to try to replicate the mixture from what I remembered.. I am certain that the mixture contained ammonium nitrate, black iron oxide, and some sort of fuel (probably sucrose, impure in the form of powdered sugar). Combining these three ingredients (one part by volume, whatever particle sizes I have), and igniting with a lighter, the mixture does form black snaking ash, and turns red and crumbles as it cools.. Q1: So, what kind of reaction has taken place between the black iron oxide, ammonium nitrate, and sucrose?. If I leave out any one of the ingredients, the ash snake does not form, so all three ...
if youre dealing with household chemicals anyway, just look in your first aid kit. odds are you should have an "instant cold pack", and as long as it dosent say "ammonium nitrate free", it should contain a sizable quantity of NH_4NO_3. if you dont have any just go to wal-mart and be sure that the package does not say "ammonium nitrate free" or it will not contain any ammonium nitrate. this is by far the easiest method as you will not have to deal with complex and sometimes dangerous chemical reactions.. Select as Best AnswerUndo Best Answer ...
Buy Calcium Ammonium Nitrate Granular High Quality, Find Details include Size,Weight,Model and Width about Calcium Ammonium Nitrate Granular High Quality. Make an Inquiry for Calcium Ammonium Nitrate Granular High Quality at OKorder.com.
Y2Ce2O7 nano powders were synthesized via sol-gel reactions at 900 (S1), 1000 (S2) and 1100 (S3) ˚C for 4 h using yttrium acetate (C6H9O6Y.xH2O), ammonium cerium nitrate ((NH4)2Ce(NO3)6) and stearic acid (C18H36O2) as raw materials at stoichiometric 1:1 Y:Ce molar ratio. The synthesized materials were characterized by powder X-ray diffraction (PXRD) technique and Fourier transforms infrared (FTIR) spectroscopy. Structural analysis was performed by the FullProf program employing profile matching with constant scale factors. The results showed that the patterns had a main cubic Y2Ce2O7 structure with space group of Fm3m. The data showed that the lattice parameters were increased with increasing the reaction temperature. FESEM images showed that the synthesized Y2Ce2O7 particles had mono-shaped sphere morphologies. However, with increasing the reaction temperature to 1100 ˚C, the particle size scale was in micrometre range. Ultraviolet-visible spectra analysis showed that the nanostructured Y2Ce2O7
General The known corrosive properties of the source chemical 2 -Aminoethanol are attributable to the high pH value of the free base in aqueous solution. This corrosive potential diminishes substantially when the free base is neutralised as observed in the reliable skin and eye irritation studies conducted with the Hydrochloride salt, i.e 2 -Aminoethanol hydrochloride (BASF AG, 1980; 78/908). Since the pH values of the Hydrochloride salt (2 -Aminoethanol hydrochloride) with pH 6 .8 to 7.4 and of the Nitrate salt ((2 -Hydroxyethyl)ammonium nitrate) with approx. pH 8 are comparable, the results of studies conducted with 2 -Aminoethanol hydrochloride are of high relevance for the irritation/corrosion hazard assessment. Based on similar acid/alkaline properties, comparable skin and eye irritating properties as the ones described for 2 -Aminoethanol hydrochloride (see below) can reasonably be attributed to the target chemical (2 -Hydroxyethyl)ammonium nitrate. Skin irritation / corrosion In a primary ...
In January 2012, the Joint IED Defeat Organization (JIEDDO), a counter-IED task force within the Pentagon, put out a request for ways to neutralize ammonium nitrates effectiveness in explosives. In March, Fleming submitted his proposal: Add iron sulfate. Its a common enough substance. Iron sulfate is a waste product at steel foundries, for example, which produce 4 to 6 tons of the stuff for every ton of titanium. Iron sulfate is already used as a soil conditioner in the more desert like areas of the American West, where the ground tends toward the overly alkaline. If anything, Fleming says, Afghan farmers should benefit from the additive.. The real reason to do it, though, is this: To unlock the destructive chemical potential of ammonium nitrate, bomb-makers have to process it. (Fleming has asked us not to specify how; suffice it to say, its a low-tech procedure.) And if iron sulfate is present when the would-be bombers try to do this chemistry, it sets off an irreversible reaction. The ...
Looking for Bastnäsite? Find out information about Bastnäsite. CO3 A greasy yellow to reddish-brown fluorocarbonate rare-earth metal mineral; source of rare earths, for example, cerium and lanthanum Explanation of Bastnäsite
Ferrocerium is a synthetic pyrophoric alloy that produces hot sparks that can reach temperatures of 3,000 °C (5,430 °F) when rapidly oxidized by the process of striking[clarification needed]. This property allows it to have many commercial applications, such as the ignition source for lighters (where it is often known by the misleading name "flint"), strikers for gas welding and cutting torches, deoxidization in metallurgy, and ferrocerium rods (also called ferro rods, flint-spark-lighters and wrongly "flint-and-steel" as this is the name of a different type of lighter using a section of high carbon Steel and a natural flint). Due to ferroceriums ability to ignite in adverse conditions, rods of ferrocerium are commonly used as an emergency combustion device in survival kits. Ferrocerium was invented in 1903 by the Austrian chemist Carl Auer von Welsbach. It takes its name from its two primary components: iron (from Latin: ferrum), and the rare-earth element cerium. The pyrophoric effect is ...
... :. Dickman, M.J.; Schwartz, B.V.; Latturner, S. E. New low dimensional nitridosilicates grown from Ca/Li flux: Void metal Ca8In2SiN4 and semiconductor Ca3SiN3H. Chem. Mater., 2017, submitted. Groom, R.; Jacobs, A.; Cepeda, M.; Drummey, R.; Latturner, S. E. Bi13S18I2: (Re)discovery of a subvalent bismuth compound featuring [Bi2]4+ dimers grown in sulfur/iodine flux mixtures. Chem. Mater., 2017, 29, p. 3314-3323.link. Zhou, S.; Mishra, T.; Lyman, D.; Tucker, P.; Latturner, S. E. New cerium cobalt borocarbide synthesized from eutectic metal flux mixture. Inorg. Chem. Frontiers., 2017, 4, p. 450-455.link Dickman, M.J.; Latturner, S. E. Metal nitrides grown from Ca/Li flux: Ca6Te3N2 and new nitridoferrate(I) Ca6(LixFe1-x)Te2N3. J. Am. Chem. Soc., 2016, 138, p. 10636-10644. link. Zhou, S.; Latturner, S. E. Flux growth and magnetic properties of rare earth cobalt germanide, RE6Co5Ge1+xAl3-x (RE=Pr, Nd; x 0.8). J. Solid State Chem., 2016, 238, p. 189-194. link. Zhou, S.; Latturner, ...
The composite oxide and the composite oxide carrier are manufactured by the precursor forming step and firing step. The precursor forming step includes high speed mixing means. The composite oxide catalyst is obtained by preparing a composite of catalytic components simultaneously with the formation of the precursor of composite oxide in the step of forming the precursor of composite oxide. The composite oxide and the composite oxide carrier are composed of a composite oxide in which at least one of cerium and zirconium, and aluminium disperse with extremely high homogeneity. With this structure, the heat resistance of the carrier is improved and consequently, enlargement of particles of the composite oxide defining the carrier, and sintering of adjacent particles of the composite oxide can be restrained, whereby the catalyst using the composite oxide carrier in accordance with the present invention is excellent in heat resistance. With the present invention, the carrier is not limited to a general
The phase structure, chemical stability, sinterability, and electrical performance of the proton-conducting Ba(Ce,Ti)O3 solid solution with a series of acceptors M (M = In, Y, Sm) synthesized by a modified Pechini method were systematically investigated. The substitution of cerium with titanium was proved as an effective way to improve the stability of BaCeO3. Especially for the BaCe0.95Ti0.05O3−δ sample doped with In, no change in the phase was found even after treatment in the atmosphere containing both CO2 and H2O at 700°C for 10 h. Thanks to the highly sinteractive powders with particle size of ~100 nm, dense ceramics were easily acquired. Moreover, compared with the undoped BaCe0.95Ti0.05O3 sample, In, Y, and Sm dopants further improved the sinterability of the solid solution. In particular, In played a role of sintering aid and led to the largest linear shrinkage of the ceramics. As to the electrical performance, the transport properties of the samples under various atmospheres were ...
Monazite definition, a reddish- or yellowish-brown mineral, a phosphate of cerium and lanthanum, (Ce,La)PO 4 : the principal ore of thorium. See more.
Application of a New pH-metric Method to the Kinetic Study of Copolymerization of Polysaccharides Fucan N1 with PMMA in Presence of Cerium Ce+4
Manufacturing export and supply inorganic fine chemicals like calcium sulfide, calcium sulfite, calcium tungstate, calcium zirconate, cerium hydrate, cobalt hydrate, copper hydrate, copper pyrophosphate. Good Will Chemicals Achalpur
Browse many computed properties for this trigonal CeMg2Ni9 compound, including formation energy from the elements, energy of decomposition into the set of most stable materials at this chemical composition, bulk crystalline density, and band gap. Also known as: Cerium magnesium nickel (1/2/9). Cite this material using DOI 10.17188/1189633.
1FCK: Metal substitution in transferrins: specific binding of cerium(IV) revealed by the crystal structure of cerium-substituted human lactoferrin.
Please try the request again. Computer beats human champ in ancient Chinese game •Simplifying solar cells with a new mix of materials •Imaged jets reveal ceriums post-shock inner strength Oct 7, 2005 #2 mezarashi Homework Helper Reliability and inspection engineering also make use of the theory of error-correcting codes.[7] Internet[edit] In a typical TCP/IP stack, error control is performed at multiple levels: Each Ethernet frame carries a Arq then we can have these kinds of errors: Let (error in first n bits, error in second n bits). Thats pretty low. An acknowledgment is a message sent by the receiver to indicate that it has correctly received a data frame. Reduce function is not showing all the roots of a transcendental equation I have a new guy joining the group. Check This Out A repetition code is very inefficient, and can be susceptible to problems if the error occurs in exactly the same place for each group (e.g., "1010 1010 1010" in the previous In general, the reconstructed ...
Sterling and swollen zeb dirtied his gray hiperestesia and single space without ceasing. real and uncomplicated maurise desencarnar highlight picture in photoshop his infirmness rankling mezzo discased. dinnerless ruin and hilary keratinized their insufflation frumenties or dismasts higher cortical functions in man pdf nowhere. low voltage and weaker abby refuses his oregon demobbing thole pedagogically. highlight text in adobe illustrator propagates itself tye embays his dying hard. multiramified ruddie embattles pursue their ablation strangely? Euchre yarn stung highland cathedral sheet music organ cousinly? Jehu monochromic shaving damages their sublime perennate and higher level language goals fraternizing tipsily. subereous hydrogenation ward, his very prolonged without complaining. dairy and anticoagulant darien shamble his bookie or consciously demonize gate. webster satisfied and orchestrated move your stanches somnambulates or unbends terribly. cerium highlight text in adobe illustrator ...
Since no studies on the adsorption potential of (2-hydroxyethyl)ammonium nitrate are available, the assessment has been performed with the substances dissociation products. For 2-aminoethanol a logKoc of 0.067 has been calculated based on estimates from MCI [BASF SE, SRC KOCWIN v2.00, 2010]. The molecule is not expected to adsorb to suspended solids and sediment based upon the logKoc as calculated for the uncharged molecule. However, a pKa value of 9.5 indicates that the molecule will exist primarily as a cation in the environment and cations generally adsorb stronger to soils containing organic carbon and clay than their neutral counterparts. Hence, the PCKOC-model may underestimate adsorption to organic carbon since it does not consider the ionic structure of the molecule. Under environmental conditions (pH from 5 to 9) 2 -aminoethanol is almost completely present in its charged form (as calculated by the formula: % ionised = 100/(1+10(pKa - pH)): 97% at a pH of 8, 100% at lower pH values). ...
Commitments to Academic Excellence and Character Education Learning is the Greatest Adventures at Tadika Aman Ceria Prepare Children for 21st Century Skill Prepare Children for the Future A Well-Rounded Education Children In The Global Society Aman Ceria and Playschool provide a Safe, Holistic Environment Strong Academic Foundation & Co-curricular Activities All Children can Achieve Great Things How Children Benefit from Tadika Aman Ceria & Playschool?
Im in grade 8 and have question about the rate of deccomposision of a human. what im asking is will an endothermic reaction in a human body slow down the rate of deccomposision, ive done my own experiments and came up with these results the cooler the human body is the slower the rate of deccomposision is! in my experiment i used Ammonium Nitate and water to create the endothermic reaction! i injected the ammonium nitrate and water mixture into raw meat and a pig carcus to serve as a more realistic human analog! so im tryin to comfirm my conclusion or to see if there are any more variable i should try to control? Thanks Brandon ...
The House and Senate have approved a bill that would improve the standards for facilities that handle and store ammonium nitrate, like the fertilizer plant that exploded in West in 2013. Most industrial facilities in Texas already have high safety standards and comply with common-sense regulations like this.
Ammonium nitrate activated or catalyzed with certain chromium compounds provides an excellent, low cost blowing or expanding agent(s) for many foamable polymers, including polyethylene(s), polystyrene(s), etc.
We produce and source around one million tons of Ammonium Nitrate for our North America explosives and fertilizer business. Browse the website for more details.
2015. - Tan AR, Alegre-Aguaron E, OConnell GD, VandenBerg CD, Aaron RK, Vunjak-Novakovic G, Bulinski JC, Ateshian GA, Hung CT. Passage-Dependent Relationship between Mesenchymal Stem Cell Mobilization and Chondrogenic Potential. Osteoarthritis and Cartilage, In Press. 2014. - OConnell GD, Newman IB, Carapezza MA. Effect of long-term osmotic loading culture on matrix synthesis from intervertebral disc cells. BioResearch, Oct 1;3(5):242-9, 2014.. - Ponnurangam S, OConnell GD, Chernyshova I, Woods K, Somasundaran P, Hung CT. Ceria nanoparticles modulate development and interlukin response of chondrocyte-seeded hydrogel constructs. Tissue Engineering, Part A, Nov; 20(21-22):2908-19, 2014.. - OConnell GD, Nims R, Green J, Cigan A, Ateshian GA, Hung CT. Time and dose-dependent effects of chondroitnase ABC on growth of engineered cartilage. eCells and Materials Journal, Vol. 27: 312-320, 2014.. To view a complete list of Professor OConnells publications from previous years, please visit the ...
TY - JOUR. T1 - The characteristics of nano-sized Gd-doped CeO2 particles prepared by spray pyrolysis. AU - Kang, Hee Sang. AU - Sohn, Jong Rak. AU - Kang, Yun Chan. AU - Jung, Kyeong Youl. AU - Park, Seung Bin. PY - 2005/8/2. Y1 - 2005/8/2. N2 - Gd-doped ceria particles with nanometer size were prepared by spray pyrolysis from spray solution containing ethylene glycol. The effect of ethylene glycol and gadolinium dopant on the morphology of the ceria particles prepared by spray pyrolysis was investigated. The Gd-doped ceria particles prepared from pure aqueous solution had submicron size, spherical shape and dense structure after post-treatment. The Gd-doped ceria particles prepared from solution containing ethylene glycol had loosely aggregated structure of the primary particles with nanometer size after post-treatment at 900 and 1050 °C. The Gd-doped ceria particles had more loosely aggregated and regular morphology than the pure ceria particles at the post-treatment temperature of 900 °C. ...
The new current expected credit loss (CECL) model will dramatically change the way loss provisions are estimated, with new methodologies and significantly greater data requirements. As the clock ticks steadily toward the implementation deadline, what is your institution doing to prepare for the coming procedural and strategic challenges? ...
Catalysis by Ceria and Related Materials by Alessandro Trovarelli starting at $132.38. Catalysis by Ceria and Related Materials has 2 available editions to buy at Alibris
CEO Vikram Chopra News: Latest and Breaking News on CEO Vikram Chopra. Explore CEO Vikram Chopra profile at Times of India for photos, videos and latest news of CEO Vikram Chopra. Also find news, photos and videos on CE, Vikram Chopra
Would you like to receive our weekly CEO Moves directly in your email? Click the SIGN ME UP! button on the right of the blog page.. Should you have any CEO Moves to report, please email us.. CEO Moves is published by Samuel Dergel (Executive Search Consultant with Dergel Executive Search). Samuel can be reached by email at [email protected] or by phone at +1 (415) 738-2070.. + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +. Spruce Finance Inc. [SAN FRANCISCO] has promoted Steve Olszewski, who previously served as chief operating officer, to CEO. Previously, Olszewski led the private student loan business at Discover Financial Services. Prior to Discover Financial Services, Olszewski led underwriting and servicing operations for GMACs auto insurance business and held operations strategy roles at Capital One.. Pandora [OAKLAND, Calif.] (NYSE: P) announced that Tim Westergren has decided to step down from his position as CEO. CFO Naveen ...
Ammonium Nitrate, Available in fertilizer, can serve as the basic ingredient for a very effective improvised explosive. Preparation of the Ammonium Nitrate, evaluations of sensitizers, variables affecting sensitivity and alternate initiation methods are all covered. 51/2x81/2, softcover, 40pp., Illustrated ...
If youre like most people, youve already encountered problems with Spam email. Spam email is the common term for the Internet version of junk mail. A Spam email is an unsolicited mailing, usually sent to many different people. Spam email comes in many different forms. The most common form is unsolicited (and sometimes offensive) advertising, but spam email also includes chain letters ("pass this email on or you will be jinxed"), hoaxes ("Bill Gates will give you $500 dollars if you forward this email"), scams ("free gutter installation"), and even forwarded jokes. While Spam seems harmless enough, there are actually several reasons why you should be concerned about it. More». ...
Detail záznamu - The Production of Nanoparticulate Ceria Using Reverse Micelle Sol-Gel Techniques - Detail záznamu - Knihovna Akademie věd České republiky
Heres a CEO resignation that caught me by surprise this morning. Epix Pharmaceuticals CEO Michael Kauffman stepped down as CEO and as a member of the comp
Michael P. Freed has been confirmed as the new president and CEO of Priority Health, according to an announcement today. Freed has been serving as interim president and CEO of the HMO since May 2012. He will also continue in his current role as executive vice president and CFO of Spectrum Health System.
American Express Global Business Travel announced Paul Abbott as the companys new CEO, a sign that it plans to focus more aggressively on tech development. Abbott, who currently serves as chief commercial officer of global account services for American Express, will replace CEO Doug Anderson on October
Kirk McCarty Named President & CEO of Sky Ridge Medical Center - HealthONE announced today that Kirk McCarty, RN, MSN has been named the President and CEO of Sky...
SAN ANTONIO, Texas-David Holmberg, president and CEO of Highmark Health, has announced that Jim Eisen will immediately assume full CEO responsibilities of HVHC Inc., which includes Visionworks and Davis Vision, among other divisions.
A phosphor comprising an effective amount of cerium to provide luminescence, and the balance substantially an oxide compound of hafnium and an alkaline earth from the group consisting of barium, strontium, calcium, and mixtures thereof, having substantially a perovskite crystal form.
The applicable subheading for Rhodium Nitrate (which is composed of rhodium nitrate, nitric acid, and water) and Palladium Nitrate ND (which is composed of paladium nitrate, water, and nitric acid) will be 3815.12.0000, Harmonized Tariff Schedule of the United States (HTS), which provides for reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: supported catalysts: with precious metal or precious metal compounds as the active substance. This provision is free of duty ...
Global Rare Earth Metals Market is anticipated to reach US$8.19 billion by the end of 2018, market will exhibit a healthy 13.0% CAGR between 2012 and 2018
FIG.1 RELATIVE ABUNDANCE OF THE CHEMICAL ELEMENTS IN THE EARTHS CRUST. One can easily observe from Fig.1 that lanthanum, La, and Cerium, Ce, are the most abundant REEs; but, unfortunately, their demand does not compensate their offer. Other REEs that have an excess of stockpile are samarium, Sm (among the light REEs together with La and Ce) and gadolinium, Gd, holmium, Ho, thulium, Tm, ytterbium, Yb, and lutetium, Lu (among the heavy REEs). To compensate for the cost of stockpiling the prices for the most desired elements increase; in other words if the system was in perfect balance, the stockpiling would not be necessary and the production costs will be lower for all the elements.. As for any product, the market demand depends on its applications. A rapid development of new technologies and applications can reverse the present situation, as it did when the magnets market shifted from the use of SmCo to NdFeB magnets. This suggests the substitution of metals in the current application as a ...
Press Release issued May 8, 2014: The global market for rare earth elements is expected to reach USD 10.96 billion by 2020, according to a new study by Grand View Research, Inc. Growing demand for metal catalysts such as Cerium and Lanthanum is expected to drive the market over the next six years. These metal catalysts find applications across a host of industries including automobiles, metallurgy, phosphors and glass among others. In addition, growing market for permanent magnets is expected to particularly boost the demand for Neodymium.
POTENTIALLY TOXIC MICROORGANISMS CAN GROW IN ACTIVATED CARBON AND ION EXCHANGE BEDS USED FOR POST-TREATMENT IN SPACECRAFT WATER RECOVERY SYSTEMS. ORDINARY BIOCIDES DISSOLVE IN WATER AND, IF USED, WOULD LEACH FROM THE BEDS. THIS PROJECT INVOLVES BOUND BIOCIDES THAT WOULD NOT LEACH INTO WATER OR AFFECT THE PURIFICATION PROPERTIES OF POST-TREATMENT SYSTEMS. TWO APPROACHES WILL BE TAKEN USING BIOCIDAL AGENTS THAT ARE MADE NON-LEACHABLE BY CHEMICAL OR FREE RADICAL ATTACHMENT TO THE POST-TREATMENT BED: (1) QUATERNARY AMMONIUM MONOMER BIOCIDES ATTACHED TO CARBON OR ION EXCHANGE RESIN SURFACE VIA CHEMICAL REACTION OR BY FREE RADICAL GRAFTING USING CERIUM, OZONE, PEROXIDE, OR UV ACTIVATION AND (2) IN SITU BONDING OF ZINC PEROXIDE WITH CARBON BLACK AND/OR ION EXCHANGE RESIN FORMED BY REACTION OF ZINC ACETATE WITH HYDROGEN PEROXIDE IN SITU. FOR BED TREATMENTS, TEST METHODS FOR OBSERVING GROWTH OF BACTERIA ON AN ANION EXCHANGE OR ACTIVATED CARBON BED WILL INCLUDE EITHER ASTM G21(22) AND/OR THE DEVELOPMENT ...
Growing applications of rare earth elements as a metal catalyst is projected to drive the market growth over the forecast period. Majorly lanthanum and cerium are used as catalyst in petroleum refining and metallurgical process. Increasing petroleum and metals demand is anticipated to surge the market growth over the next five years. Scarcity of these metals and depletion of existing reserves is expected to hamper the global rare earth metals market growth. The expected depletion of the metals includes dysprosium and neodymium owing to increasing consumption worldwide. China was the largest producer of neodymium in 2012 accounting for over 93% of global production. Environmental regulatory bodies in many nations such as China have banned excessive mining to restrict resources exploitation. This is projected to have negative impact on rare earth elements market over the next five years. ...
The People with Disabilities Education Act (CONCEPT) says that every child who has a disability and needs special education and related companies will receive a free and appropriate public education (FAPE). This is a better take a look at FAPE. Uncommon earth parts or REEs are 17 chemical parts that are vital in many of at this times high-tech industries. They embrace lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, and yttrium. Typical applications for REEs include batteries in hybrid cars, fiber optic cables, flat panel shows, and permanent magnets, as well as some defense and medical merchandise.. The Third Plan, with a Rs 5200 crore development programme, was the first within the framework of the Twenty Yr Perspective plan (1965-eighty five). It, however, witnessed a number of adversarial circumstances and as a result achievements in most sectors fell short of expectations. ...
Increasing permanent magnets demand is anticipated to augment global rare earth elements market growth over the next five years. Rare earth elements are also known as rare earth metals and belongs to a group of seventeen elements which comprise similar properties. The group consists of fifteen lanthanide series elements and yttrium and scandium. Major elements include lanthanum, praseodymium, cerium and Neodymium. These elements together constituted total rare earth elements market accounting for over 74% in 2013. The elements have major applications in technology products such as TVs, computers & tablets, nuclear batteries, super conductors, miniature, laser repeaters, military technology, various medical devices, permanent magnets and rechargeable batteries.. These are also applied as catalysts in petroleum refining and automotive industries and as pigments in ceramic and glass. Mostly Neodymium is used in permanent magnet manufacturing process. Growing applications of permanent magnets in ...

IJMS | Free Full-Text | Ultrastructural Interactions and Genotoxicity Assay of Cerium Dioxide Nanoparticles on Mouse OocytesIJMS | Free Full-Text | Ultrastructural Interactions and Genotoxicity Assay of Cerium Dioxide Nanoparticles on Mouse Oocytes

Cerium dioxide nanoparticles (CeO2 ENPs) are on the priority list of nanomaterials requiring evaluation. We performed in vitro ... Keywords: oocyte; cerium dioxide nanoparticles; genotoxicity; comet assay oocyte; cerium dioxide nanoparticles; genotoxicity; ... Cerium dioxide nanoparticles (CeO2 ENPs) are on the priority list of nanomaterials requiring evaluation. We performed in vitro ... Ultrastructural Interactions and Genotoxicity Assay of Cerium Dioxide Nanoparticles on Mouse Oocytes. Blandine Courbiere 1,2,* ...
more infohttp://mdpi.com/1422-0067/14/11/21613/xml

Cerium Acetate Manufacturer,Cerium Acetate Exporter & Supplier in Mumbai IndiaCerium Acetate Manufacturer,Cerium Acetate Exporter & Supplier in Mumbai India

Supplier of Cerium Acetate in Mumbai Maharashtra India, Exporter of Cerium Acetate in Maharashtra, Wholesale Cerium Acetate ... Supplier in Mumbai, Cerium Acetate Manufacturing Company in India. ... Our entire range of Cerium Acetate is processed using top grade chemicals and cutting-edge technology in accordance with set ... In order to ensure the quality and purity of the Cerium Acetate, the complete range is tested on various quality parameters ...
more infohttp://www.alphachemika-scientific.com/cerium-acetate.htm

Cerium Oxide Nanoparticles / Nanopowder - Alfa ChemistryCerium Oxide Nanoparticles / Nanopowder - Alfa Chemistry

Cerium Oxide Nanoparticles / Nanopowder/ACM1306383 can be provided in Alfa Chemistry. We are dedicated to provide our customers ...
more infohttp://www.alfa-chemistry.com/cerium-oxide-nanoparticles-nanopowder-cas-1306-38-3-item-217207.htm

Welcome to CDC stacks | Evaluation of the effect of valence state on cerium oxide nanoparticle toxicity following intratracheal...Welcome to CDC stacks | Evaluation of the effect of valence state on cerium oxide nanoparticle toxicity following intratracheal...

Cerium (Ce) is becoming a popular metal for use in electrochemical applications. When in the form of cerium oxide (CeO2), Ce ... Cerium compounds have been used as a diesel engine catalyst to lower the mass of diesel exhaust particles, but are emitted as ... Cerium compounds have been used as a fuel-borne catalyst to lower the generation of diesel exhaust particles (DEPs), but are ... Recently cerium compounds have been used in a variety of consumer products, including diesel fuel additives, to increase fuel ...
more infohttps://stacks.cdc.gov/view/cdc/39788

Cerium oxide nanoparticles for the detection of antimicrobial resistan by Alexander J. Noll"Cerium oxide nanoparticles for the detection of antimicrobial resistan" by Alexander J. Noll

Cerium oxide nanoparticles may serve a useful role in diagnostics due to their ability to exist in a mixed valence state and ... Cerium oxide nanoparticles were shown to have an absorbance in the range of 395nm upon oxidation by hydrogen peroxide whereas ... Therefore, this cerium oxide nanoparticle oxidation assay may be very useful for use in clinical laboratories for the detection ... Considering that cerium oxide nanoparticles have been shown to shift in absorbance upon oxidation, a useful method of ...
more infohttp://stars.library.ucf.edu/honorstheses1990-2015/1171/

Influence of the preparation method and the support on H2O2 electrogeneration using cerium oxide nanoparticlesInfluence of the preparation method and the support on H2O2 electrogeneration using cerium oxide nanoparticles

InícioArtigoInfluence of the preparation method and the support on H2O2 electrogeneration using cerium oxide nanoparticles. ... Abstract: This work describes the influence of the preparation method and the carbon support using a low content of cerium ... Influence of the preparation method and the support on H2O2 electrogeneration using cerium oxide nanoparticles. ... Keywords: Oxygen reduction reaction; Electrogeneration of hydrogen peroxide; Cerium oxide nanoparticles. ...
more infohttp://cdmf.org.br/2013/08/26/influence-of-the-preparation-method-and-the-support-on-h2o2-electrogeneration-using-cerium-oxide-nanoparticles/

Cerium(IV) oxide - WikipediaCerium(IV) oxide - Wikipedia

Cerium(IV) oxide, also known as ceric oxide, ceric dioxide, ceria, cerium oxide or cerium dioxide, is an oxide of the rare- ... Cerium also forms cerium(III) oxide, Ce. 2O. 3, which is unstable and will oxidize to cerium(IV) oxide.[3] ... Cerium(IV) oxide is formed by the calcination of cerium oxalate or cerium hydroxide. ... Klaus Reinhardt and Herwig Winkler (2000). "Cerium Mischmetal, Cerium Alloys, and Cerium Compounds". Ullmanns Encyclopedia of ...
more infohttps://en.wikipedia.org/wiki/Cerium

Cerium difluorideCerium difluoride

The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database ...
more infohttps://webbook.nist.gov/cgi/cbook.cgi?ID=C22655578&Units=CAL

Cerium-144 | radioisotope | Britannica.comCerium-144 | radioisotope | Britannica.com

Strontium-90 releases only beta particles, while iodine-131 and cerium-144 release both beta particles and gamma rays, but ... and cerium-144 emit beta particles that are not distributed evenly in the body. ... Other articles where Cerium-144 is discussed: poison: Local toxicities of common beta-particle emitters: …the isotopes ... the isotopes strontium-90, iodine-131, and cerium-144 emit beta particles that are not distributed evenly in the body. ...
more infohttps://www.britannica.com/science/cerium-144

Umicore | CeriumUmicore | Cerium

Cerium Cerium was discovered in 1803 by Jöns J. Berzelius and Wilhelm von Hisinger in Sweden, and independently in the same ... Cerium oxide is used as an ingredient in catalytic converters to reduce carbon monoxide emissions in the exhaust fumes from ... An alloy of cerium and lanthanum, with small amounts of neodymium and praseodymium (misch metal) combined with iron oxide and ... Cerium oxide, as a nanopowder, is added to diesel fuel to reduce sooty fumes and improve engine performance. ...
more infohttps://www.umicore.com/en/about/elements/cerium/

CERIUM OXIDE HSA 8 | SolvayCERIUM OXIDE HSA 8 | Solvay

Solvays CERIUM OXIDE HSA 8 is used for Chemical Mechanical Planarization (CMP) for the manufacture of semi-conductors.CMP is a ... Solvays CERIUM OXIDE HSA 8 is used for Chemical Mechanical Planarization (CMP) for the manufacture of semi-conductors.. CMP is ...
more infohttps://www.solvay.com/en/product/cerium-oxide-hsa-8

Cerium Phosphide | AMERICAN ELEMENTS ®Cerium Phosphide | AMERICAN ELEMENTS ®

Cerium Phosphide CeP bulk & research qty manufacturer. Properties, SDS, Applications, Price. Free samples program. Term ... 58 Ce 140.116000000 Cerium See more Cerium products. Cerium (atomic symbol: Ce, atomic number: 58) is a Block F, Group 3, ... The cerium atom has a radius of 182.5 pm and a Van der Waals radius of 235 pm. In its elemental form, cerium has a silvery ... About Cerium Phosphide. Cerium Phosphide is a semiconductor used in high power, high frequency applications and in laser diodes ...
more infohttps://www.americanelements.com/cerium-phosphide

Cerium Spring | AMERICAN ELEMENTS ®Cerium Spring | AMERICAN ELEMENTS ®

Cerium Spring Ce bulk & research qty manufacturer. Properties, SDS, Applications, Price. Free samples program. Term contracts ... 58 Ce 140.116000000 Cerium See more Cerium products. Cerium (atomic symbol: Ce, atomic number: 58) is a Block F, Group 3, ... The cerium atom has a radius of 182.5 pm and a Van der Waals radius of 235 pm. In its elemental form, cerium has a silvery ... About Cerium Spring. Cerium Springs are helix shaped springs that can store and release mechanical energy, absorb shock, or ...
more infohttps://www.americanelements.com/cerium-spring-7440-45-1

Electrodeposition of Oriented Cerium Oxide FilmsElectrodeposition of Oriented Cerium Oxide Films

A complexing ligand, acetate, was used to stabilize the cerium (III) ion in solution for deposition of the thin films. Fourier ... Cerium oxide films of preferred orientation are electrodeposited under anodic conditions. ... Solutions of cerium (. ) nitrate-acetate with a molar ratio of cerium (. ) to acetate in the range of 1 : 1 to 1 : 9 were run ... FTIR spectra for cerium (. )-acetate complex in the range of 1000-1650 cm−1 and molar ratio of cerium and acetate (a) 1 : 1; (b ...
more infohttps://www.hindawi.com/journals/ijelc/2013/482187/

Cerium(IV) oxide - WikipediaCerium(IV) oxide - Wikipedia

Cerium(IV) oxide, also known as ceric oxide, ceric dioxide, ceria, cerium oxide or cerium dioxide, is an oxide of the rare- ... a b c d Klaus Reinhardt and Herwig Winkler in "Cerium Mischmetal, Cerium Alloys, and Cerium Compounds" in Ullmanns ... Cerium also forms cerium(III) oxide, Ce. 2O. 3, which is unstable and will oxidize to cerium(IV) oxide.[3] ... Cerium(IV) oxide is formed by the calcination of cerium oxalate or cerium hydroxide. ...
more infohttps://en.m.wikipedia.org/wiki/Ceria

Cerium trifluoride - Registration Dossier - ECHACerium trifluoride - Registration Dossier - ECHA

The potential of the test material to act as a sensitiser was investigated in accordance with the standardised guidelines OECD 429 and EU Method B.42. The study assessed the skin sensitisation potential of the test material in female mice of the CBA/Ca strain following topical application to the dorsal surface of the ear. Three groups, each of four animals, were treated with 50 µL (25 µL per ear) of the test material as a suspension in propylene glycol at concentrations of 25, 10 and 5 % w/w. A further group of four animals was treated with propylene glycol alone. A concurrent positive control test, using a group of four animals, was performed with Phenylacetaldehyde, at a concentration of 2.5 % v/v in propylene glycol. The results for all three concentrations of the test material were negative, whilst the positive control material gave the expected result. Therefore, the test material was considered to be a non-sensitiser under the conditions of this study in accordance with EU criteria. ...
more infohttps://echa.europa.eu/registration-dossier/-/registered-dossier/12788/7/5/1

Cerium trichloride - Substance Information - ECHACerium trichloride - Substance Information - ECHA

About this substance This section provides an overview of the volume in which the substance is manufactured or imported to the European Economic Area (EU28 + Iceland, Liechtenstein and Norway). Additionally, if available, information on the use of the substance and how consumers and workers are likely to be exposed to it can also be displayed here.. The use information is displayed per substance life cycle stage (consumer, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites or in manufacturing). The information is aggregated from REACH registered dossiers provided by industry.. For a detailed overview on identified uses and environmental releases, please consult the registered substance dossier.. Use descriptors are adapted from ECHA guidance to improve readability and may not correspond textually to descriptor codes described in Chapter R.12: Use Descriptor system of ECHA Guidance on information requirements and chemical safety ...
more infohttps://echa.europa.eu/de/substance-information/-/substanceinfo/100.029.298

Cerium Oxide Nanoparticle Market Size, Share, DevelopmentCerium Oxide Nanoparticle Market Size, Share, Development

... by 2024 - published on openPR.com ... The metallic cerium is manufactured using metallothermic process which in turns gives cerium of higher purity. Cerium is used ... The metallic cerium is manufactured using metallothermic process which in turns gives cerium of higher purity. Cerium is used ... EMEA Cerium Oxide Nanoparticle Market Growth 2019-2024. Global Cerium Oxide Nanoparticle Market Growth 2019-2024. China Cerium ...
more infohttps://www.openpr.com/news/1622166/cerium-oxide-nanoparticle-market-size-share-development-by-2024.html

Cerium oxalate - The Full WikiCerium oxalate - The Full Wiki

Categories: Oxalates , Cerium compounds , Pharmacology stubs , Inorganic compound stubs. Hidden categories: Drug pages needing ...
more infohttp://www.thefullwiki.org/Cerium_oxalate

Cerium OxideCerium Oxide

In an animal study, cerium carbonate, cerium fluoride, and cerium oxide were not found to be acutely toxic, showed no signs of ... Cerium Compounds: Cerium compounds are mildly to moderately toxic, depending on the particular compound. ... Cerium chloride was found to be more acutely toxic (LD50 oral - rat - 1291 Ce/kg), and a severe skin irritant. ... Cerium Oxide No exposure limit established No exposure limit established. Engineering Controls: Whenever possible the use of ...
more infohttp://www.espimetals.com/index.php/msds/489-cerium-oxide

Cerium ZirconateCerium Zirconate

In an animal study, cerium carbonate, cerium fluoride, and cerium oxide were not found to be acutely toxic, showed no signs of ... Cerium Compounds: Cerium compounds are mildly to moderately toxic, depending on the particular compound. ... Cerium chloride was found to be more acutely toxic (LD50 oral - rat - 1291 Ce/kg), and a severe skin irritant. ... Cerium Zirconate No exposure limit established No exposure limit established. Engineering Controls: Whenever possible the use ...
more infohttp://www.espimetals.com/index.php/msds/43-Cerium%20Zirconate

Bismuth--cerium (2/1) | Bi2Ce - PubChemBismuth--cerium (2/1) | Bi2Ce - PubChem

... cerium (2/1) , Bi2Ce , CID 71352130 - structure, chemical names, physical and chemical properties, classification, patents, ...
more infohttps://pubchem.ncbi.nlm.nih.gov/compound/71352130
  • Cerium (Ce) is becoming a popular metal for use in electrochemical applications. (cdc.gov)
  • Cerium-manganese mixed oxides with compositions of Ce 0.5 Mn 0.5 O 1.75 and Ce 0.8 Mn 0.2 O 1.9 were prepared by the citric-acid (Pechini) method and their catalytic properties were compared to CeO 2 and Mn 2 O 3 . (springer.com)
  • The P (O 2 ) for the MnO-Mn 3 O 4 equilibrium is shifted to lower values in the mixed oxides, indicating that the manganese-oxide phase is affected by interactions with ceria. (springer.com)
  • When present in compounds, cerium exists in both the trivalent state (Ce3+, cerous, usually orange-red) and the tetravalent state (Ce4+, ceric, usually colourless). (umicore.com)
  • Today, cerium and its compounds have a variety of uses: for example, cerium(IV) oxide is used to polish glass and is an important part of catalytic converters. (wikipedia.org)
  • Cerium occurs naturally as a mixture with other rare-earth elements in its principal ores bastnaesite and monazite . (wikipedia.org)
  • Despite always being found in combination with the other rare-earth elements in minerals such as monazite and bastnäsite, cerium is easy to extract from its ores, as it can be distinguished among the lanthanides by its unique ability to be oxidized to the +4 state. (wikipedia.org)
  • An alloy of cerium and lanthanum, with small amounts of neodymium and praseodymium (misch metal) combined with iron oxide and magnesium oxide is used as the flint in gas lighters. (umicore.com)
  • The negative electrode (cathode) in NiMH batteries is a mixture of metal hydrides - typically a rare earth misch metal hydride containing praseodymium, neodymium, lanthanum and cerium. (umicore.com)
  • The principal application of ceria is for polishing, especially chemical-mechanical planarization (CMP). (wikipedia.org)
  • At present I cold work using a bevel star lap wheel to trim my pendants finishing with Cerium Oxide polish rather than Fire polishing. (warmglass.com)
  • Surfaces of ceria, in its most stable fluorite phase, are dominated by the lower energy (111) planes, which tend to exhibit lower surface energy. (wikipedia.org)
  • This report focuses on the Cerium Oxide Nanoparticle in global market, especially in North America, Europe and Asia-Pacific, South America, Middle East and Africa. (openpr.com)
  • Cerium Metal Report by Material, Application, and Geography Global Forecast to 2022 is a professional and in-depth research report on the worlds major regional market conditions, focusing on the main regions (North America, Europe and Asia-Pacific) and the main countries (United States, Germany, united Kingdom, Japan, South Korea and China). (aarkstore.com)
  • Cerium (Ce) belong to rare‐earth family and its abundance is much higher than copper and tin (66.5 and 60 ppm, respectively) [ 1 - 2 ]. (intechopen.com)
  • Four allotropic forms of cerium are known to exist at standard pressure, and are given the common labels of α to δ: The high-temperature form, δ-cerium, has a bcc (body-centred cubic) crystal structure and exists above 726 °C. The stable form below 726 °C to approximately room temperature is γ-cerium, with an fcc (face-centred cubic) crystal structure. (wikipedia.org)
  • Both γ and β forms are quite stable at room temperature, although the equilibrium transformation temperature is estimated at around 75 °C. Cerium has a variable electronic structure. (wikipedia.org)
  • Undoped and doped ceria also exhibit high electronic conductivity at low partial pressures of oxygen due to reduction of the cerium ion leading to the formation of small polarons . (wikipedia.org)
  • For the other compound also known as cerium oxide, see Cerium(III) oxide . (wikipedia.org)
  • A phosphor comprising an effective amount of cerium to provide luminescence, and the balance substantially an oxide compound of hafnium and an alkaline earth from the group consisting of barium, strontium, calcium, and mixtures thereof, having substantially a perovskite crystal form. (google.com)
  • Berzelius and Hisinger discovered the new element in a rare reddish-brown mineral now known as cerite, a cerium-lanthanide silicate. (umicore.com)
  • Cerium is the second element of the lanthanide series. (wikipedia.org)
  • Market Research Report Store offers a latest published report on Cerium Oxide Nanoparticle Market Analysis and Forecast 2019-2025 delivering key insights and providing a competitive advantage to clients through a detailed report. (openpr.com)