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: 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.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)Zinc Radioisotopes: Unstable isotopes of zinc that decay or disintegrate emitting radiation. Zn atoms with atomic weights 60-63, 65, 69, 71, and 72 are radioactive zinc 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.Radioisotope Dilution Technique: Method for assessing flow through a system by injection of a known quantity of radionuclide into the system and monitoring its concentration over time at a specific point in the system. (From Dorland, 28th ed)Strontium Radioisotopes: Unstable isotopes of strontium that decay or disintegrate spontaneously emitting radiation. Sr 80-83, 85, and 89-95 are radioactive strontium isotopes.Beta Particles: High energy POSITRONS or ELECTRONS ejected from a disintegrating atomic nucleus.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.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).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.Cyprinidae: A family of freshwater fish comprising the minnows or CARPS.Tooth: One of a set of bone-like structures in the mouth used for biting and chewing.Carps: Common name for a number of different species of fish in the family Cyprinidae. This includes, among others, the common carp, crucian carp, grass carp, and silver carp.Fishes: A group of cold-blooded, aquatic vertebrates having gills, fins, a cartilaginous or bony endoskeleton, and elongated bodies covered with scales.Gills: Paired respiratory organs of fishes and some amphibians that are analogous to lungs. They are richly supplied with blood vessels by which oxygen and carbon dioxide are exchanged directly with the environment.Radioactive Waste: Liquid, solid, or gaseous waste resulting from mining of radioactive ore, production of reactor fuel materials, reactor operation, processing of irradiated reactor fuels, and related operations, and from use of radioactive materials in research, industry, and medicine. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Water Pollution, RadioactiveWaste Management: Disposal, processing, controlling, recycling, and reusing the solid, liquid, and gaseous wastes of plants, animals, humans, and other organisms. It includes control within a closed ecological system to maintain a habitable environment.Hydrology: Science dealing with the properties, distribution, and circulation of water on and below the earth's surface, and atmosphere.Nuclear Power Plants: Facilities that convert NUCLEAR ENERGY into electrical energy.ButanesAlkenes: Unsaturated hydrocarbons of the type Cn-H2n, indicated by the suffix -ene. (Grant & Hackh's Chemical Dictionary, 5th ed, p408)Pentanoic AcidsKinetics: The rate dynamics in chemical or physical systems.Light: That portion of the electromagnetic spectrum in the visible, ultraviolet, and infrared range.Metals, Heavy: Metals with high specific gravity, typically larger than 5. They have complex spectra, form colored salts and double salts, have a low electrode potential, are mainly amphoteric, yield weak bases and weak acids, and are oxidizing or reducing agents (From Grant & Hackh's Chemical Dictionary, 5th ed)Water: A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Water Purification: Any of several processes in which undesirable impurities in water are removed or neutralized; for example, chlorination, filtration, primary treatment, ion exchange, and distillation. It includes treatment of WASTE WATER to provide potable and hygienic water in a controlled or closed environment as well as provision of public drinking water supplies.Filtration: A process of separating particulate matter from a fluid, such as air or a liquid, by passing the fluid carrier through a medium that will not pass the particulates. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Powder Diffraction: Method of using a polycrystalline powder and Rietveld refinement (LEAST SQUARES ANALYSIS) of X-RAY DIFFRACTION or NEUTRON DIFFRACTION. It circumvents the difficulties of producing single large crystals.Copper Radioisotopes: Unstable isotopes of copper that decay or disintegrate emitting radiation. Cu atoms with atomic weights 58-62, 64, and 66-68 are radioactive copper isotopes.Copper: A heavy metal trace element with the atomic symbol Cu, atomic number 29, and atomic weight 63.55.Positron-Emission Tomography: An imaging technique using compounds labelled with short-lived positron-emitting radionuclides (such as carbon-11, nitrogen-13, oxygen-15 and fluorine-18) to measure cell metabolism. It has been useful in study of soft tissues such as CANCER; CARDIOVASCULAR SYSTEM; and brain. SINGLE-PHOTON EMISSION-COMPUTED TOMOGRAPHY is closely related to positron emission tomography, but uses isotopes with longer half-lives and resolution is lower.Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Immunoconjugates: Combinations of diagnostic or therapeutic substances linked with specific immune substances such as IMMUNOGLOBULINS; MONOCLONAL ANTIBODIES; or ANTIGENS. Often the diagnostic or therapeutic substance is a radionuclide. These conjugates are useful tools for specific targeting of DRUGS and RADIOISOTOPES in the CHEMOTHERAPY and RADIOIMMUNOTHERAPY of certain cancers.Fluorine: A nonmetallic, diatomic gas that is a trace element and member of the halogen family. It is used in dentistry as flouride (FLUORIDES) to prevent dental caries.Fluorine Radioisotopes: Unstable isotopes of fluorine that decay or disintegrate emitting radiation. F atoms with atomic weights 17, 18, and 20-22 are radioactive fluorine isotopes.Fluorine Compounds: Inorganic compounds that contain fluorine as an integral part of the molecule.Animal Husbandry: The science of breeding, feeding and care of domestic animals; includes housing and nutrition.Burial: The act or ceremony of putting a corpse into the ground or a vault, or into the sea; or the inurnment of CREMAINS.Textile Industry: The aggregate business enterprise of manufacturing textiles. (From Random House Unabridged Dictionary, 2d ed)Wit and Humor as Topic: The faculty of expressing the amusing, clever, or comical or the keen perception and cleverly apt expression of connections between ideas that awaken amusement and pleasure. (From Random House Unabridged Dictionary, 2d ed)Facial Neuralgia: Neuralgic syndromes which feature chronic or recurrent FACIAL PAIN as the primary manifestation of disease. Disorders of the trigeminal and facial nerves are frequently associated with these conditions.Material Safety Data Sheets: Information or data used to ensure the safe handling and disposal of substances in the workplace. Such information includes physical properties (i.e. melting, boiling, flashing points), as well as data on toxicity, health effects, reactivity, storage, disposal, first-aid, protective equipment, and spill-handling procedures.Hazardous Substances: Elements, compounds, mixtures, or solutions that are considered severely harmful to human health and the environment. They include substances that are toxic, corrosive, flammable, or explosive.Adhesiveness: A property of the surface of an object that makes it stick to another surface.Polymers: Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).Drug Delivery Systems: Systems for the delivery of drugs to target sites of pharmacological actions. Technologies employed include those concerning drug preparation, route of administration, site targeting, metabolism, and toxicity.Biocompatible Materials: Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.Drug Carriers: Forms to which substances are incorporated to improve the delivery and the effectiveness of drugs. Drug carriers are used in drug-delivery systems such as the controlled-release technology to prolong in vivo drug actions, decrease drug metabolism, and reduce drug toxicity. Carriers are also used in designs to increase the effectiveness of drug delivery to the target sites of pharmacological actions. Liposomes, albumin microspheres, soluble synthetic polymers, DNA complexes, protein-drug conjugates, and carrier erythrocytes among others have been employed as biodegradable drug carriers.

Changes in myocardial blood flow and S-T segment elevation following coronary artery occlusion in dogs. (1/12)

The relationship between regional blood flow and epicardial S-T segment elevation was studied in 26 open-chest anesthetized dogs with left anterior coronary artery ligations. Changes in myocardial blood flow, measured with 15 plus or minus 5mu (diameter) microspheres labeled with 141-Ce, 85-Sr, and 169-Yb, were correlated with summated S-T segment elevations 15 minutes, 1 hour, and 2 hours after coronary artery occlusion. In normal areas, myocardial blood flow was 113 plus or minus 5 ml/min 100 g- minus 1 and summated S-T segment elevation was 0.3 plus or minus 0.2 mv. Fifteen minutes after coronary artery occlusion in 26 dogs, S-T segment elevation was 5.7 plus or minus 0.7 mv over the center of the infarct and myocardial blood flow was 10 plus or minus 1 ml/min 100 g- minus 1; over the border zone, myocardial blood flow was 63 plus or minus 4 ml/min 100 g- minus 1 and S-T segment elevation was 3.1 plus or minus 0.1 mv. One third of the areas with a myocardial blood flow of 10 ml/min 100 g- minus 1 or less had no S-T segment elevation. In the center and border zones of the infarct in 9 dogs, myocardial blood flow increased from 11 plus or minus 2 and 67 plus or minus 8 ml/min 100 g- minus 1 15 minutes after occlusion to 20 plus or minus 4 and 84 plus or minus 12 ml/min 100 g- minus 1, respectively, 2 hours after coronary artery occlusion. These increases were not associated with a significant reduction in summated S-T segment elevation. The results do not suggest a simple quantitative relationship between epicardial S-T segment elevation and myocardial blood flow following acute coronary artery occlusion.  (+info)

Non-invasive quantification of liver perfusion with dynamic computed tomography and a dual-input one-compartmental model. (2/12)

Various liver diseases lead to significant alterations of the hepatic microcirculation. Therefore, quantification of hepatic perfusion has the potential to improve the assessment and management of liver diseases. Most methods used to quantify liver perfusion are invasive or controversial. This paper describes and validates a non-invasive method for the quantification of liver perfusion using computed tomography (CT). Dynamic single-section CT of the liver was performed after intravenous bolus administration of a low-molecular-mass iodinated contrast agent. Hepatic, aortic and portal-venous time-density curves were fitted with a dual-input one-compartmental model to calculate liver perfusion. Validation studies consisted of simultaneous measurements of hepatic perfusion with CT and with radiolabelled microspheres in rabbits at rest and after adenosine infusion. The feasibility and reproducibility of the CT method in humans was assessed by three observers in 10 patients without liver disease. In rabbits, significant correlations were observed between perfusion measurements obtained with CT and with microspheres (r=0.92 for total liver perfusion, r=0.81 for arterial perfusion and r=0.85 for portal perfusion). In patients, total liver plasma perfusion measured with CT was 112+/-28 ml.min(-1).100 ml(-1), arterial plasma perfusion was 18+/-12 ml.min(-1).100 ml(-1) and portal plasma perfusion was 93+/-31 ml.min(-1).100 ml(-1). The measurements obtained by the three observers were not significantly different from each other (P>0.1). Our results indicate that dynamic CT combined with a dual-input one-compartmental model provides a valid and reliable method for the non-invasive quantification of perfusion in the normal liver.  (+info)

Lung albumin accumulation is spatially heterogeneous but not correlated with regional pulmonary perfusion. (3/12)

The contribution of pulmonary perfusion heterogeneity to the development of regional differences in lung injury and edema is unknown. To test whether regional differences in pulmonary perfusion are associated with regional differences in microvascular function during lung injury, pigs were mechanically ventilated in the prone position and infused with endotoxin (Escherichia coli 055:B5, 0.15 microg. kg(-1). h(-1); n = 8) or saline (n = 4) for 4 h. Extravascular albumin accumulation and perfusion were measured in multiple approximately 0.7-ml lung regions by injecting pigs with radiolabeled albumin and radioactive microspheres, respectively. Extravascular albumin accumulation was spatially heterogeneous but not correlated with regional perfusion. Extravascular albumin accumulation was greater in dorsal than ventral regions, and regions with similar albumin accumulation were spatially clustered. This spatial organization was less evident in endotoxemic than control pigs. We conclude that there are regional differences in lung albumin accumulation that are spatially organized but not mediated by regional differences in pulmonary perfusion. We speculate that regional differences in microvascular pressure or endothelial function may account for the observed distribution of extravascular albumin accumulation.  (+info)

Pulmonary neoplasms in rats that inhaled cerium-144 dioxide. (4/12)

The lung neoplasms induced in rats by inhaled, internally deposited 144CeO2 were described and classified using histologic criteria. F344 rats were exposed once or repeatedly by inhalation to 144CeO2 and observed for their life span. There was significant life shortening only in those rats with the highest radiation doses. In these rats, there was a high percentage of squamous cell carcinomas of the lung, as well as much lower percentages of adenocarcinomas of the lung, hemangiosarcomas of the lung, and pleural mesotheliomas. At lower doses, adenocarcinomas were the most predominant tumor. These adenocarcinomas were subdivided based on their histologic pattern: alveolar, papillary, tubular, or undifferentiated. Neither the mode of exposure (single or repeated) nor the sex of the rat influenced the lung tumor incidence or tumor type. The lung neoplasms induced by this beta-emitting radionuclide are similar in nature to those induced by alpha-emitting radionuclides deposited in the lung in rats. However, the radiation-induced squamous cell carcinomas of the lung differ from those induced by heavy particle loads of nonradioactive compounds. The radiation-induced squamous cell carcinomas occur in higher incidence and have a more malignant behavior than those induced by heavy particle loads.  (+info)

Revascularisation of bone grafts in rats. (5/12)

Revascularisation of syngeneic and allogeneic intramuscular bone grafts have been studied using radioactive microspheres to measure the ingrowth of blood vessels. New bone formation and resorption were measured by 85strontium uptake and by graft weight reduction. Revascularisation, and mineralisation rate were significantly higher in syngeneic grafts than in allogeneic grafts at two, three and six weeks after implantation. The syngeneic grafts lost weight faster indicating that the allogeneic grafts resorbed more slowly. The ingrowth of new vessels is impaired in allogeneic bone, and this probably inhibits the rate of bone formation and resorption of the grafts.  (+info)

Distribution and Translocation of 141Ce (III) in Horseradish. (6/12)

BACKGROUND AND AIMS: Rare earth elements (REEs) are used in agriculture and a large amount of them contaminate the environment and enter foods. The distribution and translocation of (141)Ce (III) in horseradish was investigated in order to help understand the biochemical behaviour and toxic mechanism of REEs in plants. METHODS: The distribution and translocation of (141)Ce (III) in horseradish were investigated using autoradiography, liquid scintillation counting (LSC) and electron microscopic autoradiography (EMARG) techniques. The contents of (141)Ce (III) and nutrient elements were analysed using an inductively coupled plasma-atomic emission spectrometer (ICP-AES). RESULTS: The results from autoradiography and LSC indicated that (141)Ce (III) could be absorbed by horseradish and transferred from the leaf to the leaf-stalk and then to the root. The content of (141)Ce (III) in different parts of horseradish was as follows: root > leaf-stalk > leaf. The uptake rates of (141)Ce (III) in horseradish changed with the different organs and time. The content of (141)Ce (III) in developing leaves was greater than that in mature leaves. The results from EMARG indicated that (141)Ce (III) could penetrate through the cell membrane and enter the mesophyll cells, being present in both extra- and intra-cellular deposits. The contents of macronutrients in horseradish were decreased by (141)Ce (III) treatment. CONCLUSIONS: (141)Ce (III) can be absorbed and transferred between organs of horseradish with time, and the distribution was found to be different at different growth stages. (141)Ce (III) can enter the mesophyll cells via apoplast and symplast channels or via plasmodesmata. (141)Ce (III) can disturb the metabolism of macronutrients in horseradish.  (+info)

Intestinal circulation during inhalation anesthesia. (7/12)

This study was designed to evaluate the influence of inhalational agents on the intestinal circulation in an isolated loop preparation. Sixty dogs were studied, using three intestinal segments from each dog. Selected intestinal segments were pumped with aortic blood at a constant pressure of 100 mmHg. A mixture of 86Rb and 9-microns spheres labeled with 141Ce was injected into the arterial cannula supplying the intestinal loop, while mesenteric venous blood was collected for activity counting. A very strong and significant correlation was found between rubidium clearance and microsphere entrapment (r = 0.97, P less than 0.0001), suggesting that the shunting of 9-microns spheres through the intestines reflects the arteriovenous shunting of blood. Nitrous oxide anesthesia was accompanied by a higher vascular resistance (VR), lower flow (F), rubidium clearance (Cl-Rb), and microspheres entrapment (Cl-Sph) than pentobarbital anesthesia, indicating that the vascular bed in the intestinal segment was constricted and flow (total and nutritive) decreased. Halothane, enflurane, and isoflurane anesthesia were accompanied by a much lower arteriovenous oxygen content difference (AVDO2) and oxygen uptake than pentobarbital or nitrous oxide. Compared with pentobarbital, enflurane anesthesia was not accompanied by marked differences in VR, F, Cl-Rb, and Cl-Sph; halothane at 2 MAC decreased VR and increased F and Cl-Rb while isoflurane increased VR and decreased F. alpha-Adrenoceptor blockade with phentolamine (1 mg . kg-1) abolished isoflurane-induced vasoconstriction, suggesting that the increase in VR was mediated via circulating catecholamines.(ABSTRACT TRUNCATED AT 250 WORDS)  (+info)

Total cerebral ischemia: a new model system for the study of post-cardiac arrest brain damage. (8/12)

The pathophysiology of post-cardiac arrest brain damage is not well understood. Many of the model systems presently used to study global ischemia have serious limitations. A new model system for total cerebral ischemia (TCI), using aortic and inferior vena caval occlusion balloons, is described. This model system produces verifiable TCI and avoids surgical invasion of the thorax or the use of vasoactive drugs. It does not impede cerebral venous return and protects the cardiopulmonary system from damage. This model system can be used to study the efficacy of various therapeutic interventions following a standardized CNS global ischemic insult.  (+info)

*List of MeSH codes (D01)

... calcium radioisotopes MeSH D01.496.123.328 --- carbon radioisotopes MeSH D01.496.156.300 --- cerium radioisotopes MeSH D01.496. ... calcium radioisotopes MeSH D01.496.749.154 --- carbon radioisotopes MeSH D01.496.749.185 --- cerium radioisotopes MeSH D01.496. ... cobalt radioisotopes MeSH D01.496.360.400 --- gallium radioisotopes MeSH D01.496.381.550 --- gold radioisotopes MeSH D01.496. ... iron radioisotopes MeSH D01.496.532.500 --- mercury radioisotopes MeSH D01.496.586.520 --- nitrogen radioisotopes MeSH D01.496. ...

*Isotopes of cerium

There are 35 radioisotopes that have been characterized, with the most stable being 144Ce, with a half-life of 284.893 days; ... 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 ...

*Bioremediation of radioactive waste

... cerium-144, plutonium-240, americium-241, neptunium-237 and various radioisotopes of thorium and radium. By contrast, it ... Radioisotopes can be transformed directly through changes in valence state by acting as acceptors or by acting as cofactors to ... The radioisotope interact with binding sites of metabolically active cells and is used as terminal electron acceptor in the ... Several radioisotopes of strontium, for example, are recognized as analogs of calcium and incorporated within Micrococcus ...

*Systems for Nuclear Auxiliary Power

SNAP-1 was not deployed, but was designed to use cerium-144 in a Rankine cycle, with mercury as the heat transfer fluid; it ... The Systems Nuclear Auxiliary Power (SNAP) program was a program of experimental radioisotope thermoelectric generators (RTGs) ... NASA Radioisotope Power Systems SNAP-19: Pioneer F & G, Final Report, Teledyne Isotopes, 1973 [DEAD URL] "REPORT ON THE ...

*Isotopes of praseodymium

Thirty-eight radioisotopes have been characterized with the most stable being 143Pr, with a half-life of 13.57 days and 142Pr, ... The primary decay products before 141Pr are element 58 (cerium) isotopes and the primary products after are element 60 ( ...

*Fission products (by element)

The strontium radioisotopes are very important as strontium is a calcium mimic which is incorporated in bone growth and ... A great deal of the lighter lanthanides (lanthanum, cerium, neodymium, and samarium) are formed as fission products. It is ... It is the most significant radioisotope left in the area around Chernobyl. IAEA map Caesium-134 is found in spent nuclear fuel ...

*Plutonium(IV) oxide

Jeffrey A. Katalenich Michael R. Hartman Robert C. O'Brien Steven D. Howe (Feb 2013). "Fabrication of Cerium Oxide and Uranium ... The isotope decays by emitting α-particles, which then generate heat (see radioisotope thermoelectric generator). There have ...

*Lanthanum(III) bromide

Cerium activated lanthanum bromide is the recent inorganic scintillator which has a combination of high light yield and the ... LaBr3 introduces an enhanced set of capabilities to a range of gamma spectroscopy radioisotope detection and identification ... Recent advances in scintillator material have resulted in the development of cerium activated lanthanum bromide (LaBr3) ...

*Pentetic acid

DTPA forms complexes with thorium(IV), uranium(IV), neptunium(IV), and cerium(III/IV). In August, 2004 the US Food and Drug ... Technetium-99m is chelated with DTPA for ventilation perfusion (V/Q) scans and radioisotope renography nuclear medicine scans. ... and Cerium(III/IV) with DTPA" Inorganic Chemistry 2012, volume 51, 7741-7748. doi:10.1021/ic300757k ""FDA Approves Drugs to ...

*RaLa Experiment

Other radioisotopes, present as impurities, have a long enough half-life to present a potential problem even decades after the ... The half-life of La-140 is 40.224 hours; it undergoes beta decay to stable cerium-140. It was prepared from barium-140, a ... The worst affected zones are fenced off; detectable levels of radioisotopes are present in the soil, insects and trees in the ... After a test, dispersed La-140 rapidly decays into stable cerium-140, reducing the radiation hazard for the operators after ...

*Neodymium

In all, 31 radioisotopes of neodymium have been detected as of 2010[update], with the most stable radioisotopes being the ... Its abundance in the Earth's crust is about 38 mg/kg, which is the second highest among rare-earth elements, following cerium. ... In these minerals neodymium is rarely dominant (as in the case of lanthanum), with cerium being the most abundant lanthanide; ...

*Caesium chloride

When enriched in radioisotopes, such as 137CsCl or 131CsCl, caesium chloride is used in nuclear medicine applications such as ... The extract is treated with antimony chloride, iodine monochloride, or cerium(IV) chloride to give the poorly soluble double ... In the production of radioactive sources, it is normal to choose a chemical form of the radioisotope which would not be readily ... This is a drawback for its radioactive form which urges a search for more stable radioisotope materials. Commercial sources of ...

*Lutetium

The oxides are dissolved in nitric acid that excludes one of the main components, cerium, whose oxide is insoluble in HNO3. ... To date, 32 synthetic radioisotopes of the element have been characterized, ranging in mass from 149.973 (lutetium-150) to ... Cerium-doped lutetium oxyorthosilicate (LSO) is currently the preferred compound for detectors in positron emission tomography ... "Evaluation of cerium doped lutetium oxyorthosilicate (LSO) scintillation crystals for PET". IEEE Transactions on Nuclear ...

*Ytterbium

The oxide is reduced to metal by heating with lanthanum, aluminium, cerium or zirconium in high vacuum. The metal is purified ... 27 radioisotopes have been observed, with the most stable ones being 169Yb with a half-life of 32.0 days, 175Yb with a half- ...

*Ligand binding assay

It works through crystal lattice beads, which are coated with ligand coupling molecules and filled with cerium ions. These give ... IP can also be used in conjunction with biosynthetic radioisotope labeling. Using this technique combination, one can determine ...

*Isotope

Among the 41 even-Z elements that have a stable nuclide, only two elements (argon and cerium) have no even-odd stable nuclides ... Scientists estimate that the elements that occur naturally on Earth (some only as radioisotopes) occur as 339 isotopes ( ... Some isotopes/nuclides are radioactive, and are therefore referred to as radioisotopes or radionuclides, whereas others have ... Nuclear medicine and radiation oncology utilize radioisotopes respectively for medical diagnosis and treatment. Abundance of ...

*Terbium

Thirty-six radioisotopes have been characterized, with the heaviest being terbium-171 (with atomic mass of 170.95330(86) u) and ... The oxides are dissolved in nitric acid that excludes one of the main components, cerium, whose oxide is insoluble in HNO3. ... lightest being terbium-135 (exact mass unknown). The most stable synthetic radioisotopes of terbium are terbium-158, with a ...

*Europium

If cerium is the dominant lanthanide, then it is converted from cerium(III) to cerium(IV) and then precipitated. Further ... Besides the natural radioisotope 151Eu, 35 artificial radioisotopes have been characterized, the most stable being 150Eu with a ...

*Erbium

The oxides are dissolved in nitric acid that excludes one of the main components, cerium, whose oxide is insoluble in HNO3. The ... 29 radioisotopes have been characterized, with the most stable being 169 Er with a half-life of 7005812160000000000♠9.4 d, 172 ... Mosander, C. G. (1843). "On the new metals, Lanthanium and Didymium, which are associated with Cerium; and on Erbium and ... about cerium and lanthanum], Förhandlingar vid de Skandinaviske naturforskarnes tredje möte (Stockholm) [Transactions of the ...

*Index of chemistry articles

... radioisotope Radium Radon Radon fluoride Raman spectroscopy Raoult's law Redox Reduction Reflux Reversible reaction Rhazes ... CAS registry number Cassterite catalyst Cationic caustic soda Celadonite Celestine Celsius central nervous system Cerium ... Svante Arrhenius Syenite Sylvite synthetic radioisotope systematic element name Tabun Talc Talcum Tantalite Tantalum Tanzanite ...

*Zinc

Xie, Z.; Liu, Q.; Chang, Z.; Zhang, X. (2013). "The developments and challenges of cerium half-cell in zinc-cerium redox flow ... 65 Zn, which has a half-life of 243.66 days, is the least active radioisotope, followed by 72 Zn with a half-life of 46.5 hours ... The zinc-cerium redox flow battery also relies on a zinc-based negative half-cell. A widely used zinc alloy is brass, in which ... n 30Zn + e− → n 29Cu The most common decay mode of a radioisotope of zinc with mass number higher than 66 is beta decay (β−), ...

*Stable nuclide

Cerium-136 (2E) Cerium-138 (2E) Cerium-140 (SF) Cerium-142 (A, 2B) Praseodymium-141 (SF) Neodymium-142 (SF) Neodymium-143 (A) ... Primordially present radioisotopes are easily detected with half-lives as short as 700 million years (e.g., 235U). This is the ... Many naturally occurring radioisotopes (another 51 or so, for a total of about 339) exhibit still shorter half-lives than 68 ...

*Samarium

All the remaining radioisotopes have half-lives that are less than 2 days, and the majority of these have half-lives that are ... doi:10.1016/0022-5088(85)90294-2. Lock, J. M. (1957). "The Magnetic Susceptibilities of Lanthanum, Cerium, Praseodymium, ... Finlay, I. G.; Mason, M. D.; Shelley, M. (2005). "Radioisotopes for the palliation of metastatic bone cancer: a systematic ... and three extremely long-lived radioisotopes, 147Sm (half-life t1/2 = 1.06×1011 years), 148Sm (7×1015 years) and 149Sm (>2×1015 ...

*Hydrogen

... cerium(IV) oxide-cerium(III) oxide cycle, zinc zinc-oxide cycle, sulfur-iodine cycle, copper-chlorine cycle and hybrid sulfur ... is also sometimes considered as a light radioisotope of hydrogen, due to the mass difference between the antimuon and the ...
Canine left ventricular wall metabolites (ATP, creatine phosphate, glycogen, glucose, glucose-6-phosphate, and lactate) were assessed in the ischemic region of the wall after 17 minutes of ligation of the left anterior descending coronary artery at its midlevel. Variations in the degree of lactate accumulation were found between different sites in the same ischemic region and between the outer and the inner left ventricular wall at the same site. High levels of lactate were associated with S-T segment elevation in the epicardial electrocardiogram, but no lactate accumulation or only mild lactate accumulation was found at isoelectric sites. Lactate accumulation at isoelectric sites was higher in the outer wall than it was in the inner wall; the opposite tendency was observed at sites of S-T segment elevation. In addition to high lactate levels, sites of S-T segment elevation demonstrated a more pronounced depletion of ATP and creatine phosphate, indicating not only a marked anaerobic glycolysis ...
dpG antibodies were fractionated on a cellulose-double-stranded DNA column. The flow-through fraction bound denatured DNA but not double-stranded DNA (dsDNA). The dpG-eluted fraction bound dsDNA preferentially. The results show that proteins can recognise dpG in DNA by different mechanisms, some involving DNA unwinding.. ...
Diffusion-weighted noble gas pulmonary magnetic resonance imaging (MRI) provides in vivo images with a contrast uniquely sensitive to molecular displacement at cellular and sub-cellular length scales. We estimated the external airway radius (R) and internal airway radius (r) of the alveolar dimensions to evaluate potential differences in acinar duct morphometries in healthy older never-smokers and compared those with a group of ex-smokers. The acinar duct and alveolar MRI morphometry results were within the physiologically-valid range of parameters. Estimated values of internal (r) and external (R) airway radius as well as alveolar sheath (h) and mean linear intercept (Lm) for individual subjects were similar with low variance. Results showed that MRI measurements of lung air space size in healthy older never-smokers were elevated compared to previous results reported in younger never-smokers, and lower than in age-matched ex-smokers (p|.05). Specifically, older never-smokers had significantly lower
Lymphatic "blood regulator," hematopoesis, prothrombin, hemophilia, ductus thoracicus, connection: intestinal circulation, vascular tonus, lymph tracts, sexual organs, lymph & white blood count, lymphatic build-up & defensive mechanisms.. [toothbooks]. ...
Lymphatic "blood regulators," hematopoesis, prothrombin, hemophilia, ductus thoracicus, connection: intestinal circulation, vascular tonus, lymph tracts, sexual organs, lymph & white blood count, lymphatic build-up & defensive mechanisms.. [toothbooks]. ...
Provided that maintains the intestinal circulation results can you mix suboxone and ultram in this type 2 75 5976. Glitazones lower to patients can be considered when it synthesize new cOX The main effect. The object of the uK showed that widespread resistance does not reversible pathology. About 95% or antihistamines and about a number of 24-40 h. 4 399 previously useful for thrombosis, with central importance of dose of mild analgesic what does propranolol do to the body combinations. Increased parasympa- thetic tone and how to induce hepatic cYP450 showed that many gram-negative. Glitazones bind to its effect, lH following cellular functions of the critical life-saving at risk factor. In addition, emtricitabine and circulatory collapse, urinary tract. However, iodide nor- mal ventricular dysfunction, so ventricular ejection fraction of pancreatitis, human forearm vasculature. The active as the acute renal tubular reabsorption from acetate is deficient diet. Ocular irritation, 25 2073 showed ...
Research. With this project we seek to develop a tool for non-invasive quantification of the α7 subtype of nicotinic acetylcholine receptors (α7 nAChR) expressed in brain to better understand the involvement of this ligand-gated Ca2+ channel in the biology of brain cancers. Based on ex vivo data, a close connection between changes in the density and functionality of α7 nAChR with various neurological disorders and most types of cancer has been assumed. But the visualization of these alterations in vivo by clinically relevant imaging technologies such as PET is still challenging due to limitations in receptor-binding radiotracers.. Accordingly, we are working on the design, synthesis, radiolabeling, and preclinical evaluation of 18F-labelled α7 nAChR PET radiotracers. In the past years, we have learned a great deal on the suitability of small molecules substituted with a 1,4-diazabicyclo-[3.2.2]nonane, such as [18F]DBT-10 or [18F]NS10743, for detection of α7 nAChR expressed in brain of ...
An apparatus for measuring the concentration of selected solute in a solution. This apparatus is particulary suitable for measuring the concentration of blood components, such as blood late Maillard products. A beam of exposing light is imaged through a wall of a containment vessel onto a region of the sample adjacent to this wall to induce from said selected solute emission of light that includes at least one emission peak that can be used to calculate the concentration of this solute. At least one detector is positioned to maximize the strength of detected signal, if other components of this solution strongly absorb the emitted light. The exposing light is directed such that the detected signal is maximized as a function of the path of this exposing light. A particular embodiment is a low-cost, non-invasive blood Maillard products concentration detector. In this embodiment, the containment vessel is preferably one of the patients fingers. At least two additional detected signals are monitored and
...PHILADELPHIA - By comparing two species of ants Shelley Berger PhD ...Ants the new model system used in this study organize themselves int...Berger who directs Penns Epigenetics program and colleagues believe...In a study published in Science this week Berger her Penn col...,Genome,comparison,of,ants,establishes,new,model,species,for,molecular,research,biological,biology news articles,biology news today,latest biology news,current biology news,biology newsletters
Based on the methods of (Daum et al., 1982) and (Hewitt et al., 2012), we have established the use of Candida albicans as a new model system to study mitochondrial biogenesis. This dimorphic yeast provides an excellent system to investigate the coordination of mitochondrial biogenesis with other cellular networks including cellular metabolism and the cell cycle. Unlike the model lab yeast Saccharomyces cerevisiae, which has been widely used in the mitochondrial biogenesis field, C. albicans is not subject to the Crabtree effect, hence grows aerobically in glucose when oxygen is present. Therefore the control of mitochondrial biogenesis in C. albicans is more typical of eukaryotic cells. C. albicans has a fully sequenced genome and there are many published tools for genetic manipulation facilitating Systems Biology approaches. The isolation of mitochondria as described in this protocol produces a more simplified system that can be interrogated using the standard tools of molecular biology. In addition
Currently, there are limited methods available for longitudinal and non-invasive in vivo assessment of the transport kinetics of carrier-based therapeutics, such as those relying on liposomes. A viable strategy to non-invasively track the carrier in vivo is to employ the same carrier loaded with contrast-enhancing agents such as iodine and gadolinium. If these agents are retained within the carrier, they may act as surrogates for therapeutic molecules and allow for non-invasive tracking of the carrier in vivo using computed tomography (CT) and magnetic resonance (MR) imaging devices. If a correlation can be found between the change in signal intensities measured with CT and/or MR and the actual agent concentration detected in vivo, then this method has the potential to be successfully adopted for non-invasive quantification of pharmacokinetics and biodistribution studies. In this way, not only can the same animal be sampled over multiple time points, avoiding animal-to-animal variations, but the total
Chiara Bardella, Osama Al-Dalahmah, Daniel Krell, Pijus Brazauskas, Khalid Al-Qahtani, Marketa Tomkova, Julie Adam, Sébastien Serres, Helen Lockstone, Luke Freeman-Mills, Inga Pfeffer, Nicola Sibson, Robert Goldin, Benjamin Schuster-Böeckler, Patrick J. Pollard, Tomoyoshi Soga, James S. McCullagh, Christopher J. Schofield, Paul Mulholland, Olaf Ansorge, Skirmantas Kriaucionis, Peter J. Ratcliffe, Francis G. Szele, Ian Tomlinson. Expression of Idh1R132H in the Murine Subventricular Zone Stem Cell Niche Recapitulates Features of Early Gliomagenesis. Cell, 2016, Volume 30, Issue 4, p578-594.. Emir U, Larkin S, de Pennington N, Voets N, Plaha P, Stacey R, Al-Qahtani K, Mccullagh J, Schofield C, Clare S, Jezzard P, Cadoux-Hudson T & Ansorge O. Non-invasive quantification of 2-hydroxyglutarate in human gliomas with IDH1 and IDH2 mutations. Cancer Research 2016, 1;76)1):43-9.. Uche FI, Drijfhout FP, McCullagh J, Richardson A, Li WW. Cytotoxicity Effects and Apoptosis Induction by ...
... METTLER TOLEDO announced attendance at the Partec/Powtech/WCPT6 on ...(PRWEB) April 15 2010 -- METTLER TOLEDO recently announced its partic...,Track,Particle,Distribution,in,Real,Time,,biological,advanced biology technology,biology laboratory technology,biology device technology,latest biology technology
Marie-Odile is the former President of France Alzheimer, a position she held from 2010 to 2015. Previously, she served as Vice President (2008) and Administrator (2006).. She is also the former carer of her mother, who lived with Alzheimers disease. During that time, Marie-Odile created an association of family caregivers of people with Alzheimers disease in Aix-en-Provence. She joined France Alzheimers Bouches-du-Rhône chapter in 2003 and has been the chapter President since 2004.. Marie-Odile was elected to the Alzheimer Europe Board in October 2014.. Association France Alzheimer ...
For many tumours there is a lack of randomised data from which we can guide systemic treatments. Although gene expression profiling along with proteomics has led to advances in diagnosis, classification and prognosis, our ability to target many cancers has been further limited due to a lack of therapeutic options. The use of patient-derived xenograft (PDX) models in the setting of a rare malignancy is discussed here by Kamili et al, with the successful establishment of new model systems.
There are four active projects in my lab, all devoted to taking advantage of the ecological and behavioral diversity of the microbial world. One is studying interactions between gut microbes and their hosts, using a new model system, planaria (flatworms) as the experimental animals. The second is a bioremediation project, isolating bacteria which catabolize gasoline as their source of carbon and energy, and using those bacteria alone or in combination to render gasoline contaminated soil safe for normal use. The third project uses bacteriophage (bacteria-specific viruses) as an antibacterial agent for the skin disease acne, targeting the bacterial species that causes serious acne lesions. The final project is working with bacteriophage specific for food-borne pathogens, developing kitchen-based protocols to decontaminate produce like lettuce or alfalfa sprouts which are not cooked before consuming. ...
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.
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.
N-Nitrosodibutylamine and its θ-hydroxylated metabolite N-nitrosobutyl(4-hydroxybutyl)amine (NB4HBA) induce tumors in the urinary bladder of different animal species through their common urinary metabolite N-nitrosobutyl(3-carboxypropyl)amine (NB3CPA), resulting from the oxidation of the alcoholic group of NB4HBA to a carboxylic group.. NB4HBA disappearance from blood, the formation of its main metabolites, NB3CPA and NB4HBA-glucuronide (NB4HBA-G), and their urinary excretion, were investigated in rats after an i.v. dose of 1 mg/kg (5.7 µmol/kg).. NB3CPA and NB4HBA-G formation was readily detectable 2 min after treatment and levels were still measurable at 120 and 30 min, respectively. The parent compound disappeared from blood 90 min after injection. The NB4HBA blood concentration-time profile was adequately described by a one-compartmental linear model. NB4HBA half-life was 8 min, total body clearance and renal clearance were 86.1 and 0.22 ml/min/kg, respectively. The 0-96-h urinary ...
TABLE-US-00012 TABLE 8 Corn ESD Analysis A Sonic 80% A Sonic 100% A Sonic 100% A Sonic 100% A Control Amp. & 420 Watts Amp. & 412 Watts Amp. & 490 Watts Amp. & 530 Watts ESD W/BP W/NO BP W/BP W/HBP Class F(n) F(n) % F(n) F(n) % F(n) F(n) % F(n) F(n) % F(n) F(n) % 0.00 0 0.00% 0 0.00% 0 0.00% 0 0.00% 0 0.00% 1.00 3 0.17% 6 0.37% 18 1.09% 3 0.18% 5 0.29% 2.00 32 1.80% 48 2.99% 66 4.01% 27 1.58% 48 2.76% 3.00 164 9.22% 307 19.13% 157 9.54% 194 11.33% 222 12.77% 4.00 214 12.03% 329 20.50% 220 13.37% 281 16.40% 241 13.87% 5.00 180 10.12% 217 13.52% 224 13.62% 268 15.65% 278 16.00% 6.00 178 10.01% 191 11.90% 227 13.80% 238 13.89% 228 13.12% 7.00 163 9.16% 111 6.92% 209 12.71% 162 9.46% 194 11.16% 8.00 134 7.53% 81 5.05% 132 8.02% 108 6.30% 126 7.25% 9.00 121 6.80% 66 4.11% 102 6.20% 68 3.97% 101 5.81% 10.00 111 6.24% 59 3.68% 58 3.53% 56 3.27% 74 4.26% 11.00 82 4.61% 34 2.12% 44 2.67% 47 2.74% 51 2.93% 12.00 58 3.26% 45 2.80% 30 1.82% 40 2.34% 38 2.19% 13.00 56 3.15% 31 1.93% 25 1.52% 39 2.28% 26 ...
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 ...
A quasilinear analysis of the relativistic electron cyclotron maser instability is presented. A background plasma is assumed to support the wave motion, while the instability is driven by a tenuous population of energetic electrons possessing a loss-cone feature. The analysis makes use of an efBcient moment method. In this approach, evolution equations for the moments of particle distribution function are derived from the particle kinetic equation. Then, a self-similar model of the loss-cone electron distribution function is imposed. Simultaneously, the wave kinetic equation is solved. The resulting fully self-consistent set of equations that governs the evolution of the particles and unstable waves is solved numerically under physical parameters that represent typical solar microwave burst sources ...
Lignosulphonates are by‐products from the sulphite pulping process for the manufacture ofspecialty dissolving pulps and paper. During the liberation of the cellulose, the lignin isfractionated and solubilised through covalent addition of sulphonic acid groups at variouspositions in the structure. The formed sulphonated lignin, lignosulphonate is then furtherisolated and refined.. The amphiphilic nature of lignosulphonates has enabled them to be used as additives to varioussuspensions to improve their dispersion and stability. The by far largest utilisation oflignosulphonates is as dispersants in concrete. Here, lignosulphonates act by dispersing cementparticles to prevent flocculation, un‐even particle distribution and reduced strengthdevelopment. The dispersion is achieved through steric and electrostatic repulsion of the cementparticles by the lignosulphonate polymer. This behaviour is intimately linked with the overallsize and amount of charged groups in the dispersing polymer. ...
Sudden Death: The abrupt cessation of all vital bodily functions, manifested by the permanent loss of total cerebral, respiratory, and cardiovascular functions.
2-Methoxyestradiol (2ME), an endogenous metabolite of 17β-estradiol, has been previously reported to possess antiangiogenic and antitumor properties. Herein, we demonstrate that the effects of this antiangiogenic steroid can be readily assayed in live zebrafish, introducing a convenient and robust new model system as a screening tool for both single cell and collective cell migration assays. Using the in vitro mammalian endothelial cell line EA.hy926, we first show that cell migration and angiogenesis, as estimated by wound assay and tube formation respectively, are antagonized by 2ME. In zebrafish (Danio rerio) larvae, dose-dependent exposure to 2ME diminishes (1) larval angiogenesis, (2) leukocyte recruitment to damaged lateral line neuromasts and (3) retards the lateral line primordium in its migration along the body. Our results indicate that 2ME has an effect on collective cell migration in vivo as well as previously reported anti-tumorigenic activity and suggests that the molecular mechanisms
Alfa Aesar™ Cerium(III) oxalate hydrate, 99% 25g Alfa Aesar™ Cerium(III) oxalate hydrate, 99% Inorganic Cerium Compounds
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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
This study was undertaken to assess the contribution of Doppler echocardiography to the quantification of aortic valve regurgitation. Ultrasound examination was performed by recording aortic arch blood flow from the suprasternal notch. A non-invasive index of valve regurgitation was obtained by calculating the ratio between the maximal amplitude of forward flow during systole and the amplitude of retrograde flow during diastole measured at the onset of the R wave of the electrocardiogram. This index was compared with semiquantitative data derived from supravalvular aortography in 93 patients. In pure aortic regurgitation (67 patients) the results showed a high correlation coefficient between Doppler and angiographic estimates. In cases of associated aortic valve stenosis there were problems in the accurate estimation of systolic blood flow which led to global overestimation in general of the degree of regurgitation and considerable lack of precision in individual patients. But in general Doppler ...
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 ...
0109] Into a 600 ml glass beaker with a magnetic stir bar was introduced 500 ml of high purity (HP) water. A 1.605 gm quantity of DL-arginine was dissolved in this volume and the solution was heated to about 40° C., thereby forming an alkaline solution. An aqueous solution containing a 10.0 gm quantity of Ce(NO3)36(H2O) was added under high shear mixing conditions provided by a Silverson L4RT high shear mixer operated at about 5000 RPM, resulting in a pale orange colored solution of about pH 7.9. The molar ratio of DL-arginine to cerium ion was 0.4. Then a 10 ml solution containing 1.2 gm of 50% H2O2 (0.75 molar ratio of H2O2 to cerium ion) was added slowly to the cerium and arginine solution mixture, which lowered the pH to about 3.4, and formed a turbid dark brown/orange suspension. The pH was further adjusted to about 2 by the addition of 1N HNO3, thereby forming a clear orange liquid. The reaction product was then stirred with a magnetic stir bar for 1 hour at 40° C. After cooling ...
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 ...
Novel findings of the current study include: 1) significant increase in fractional myocardial dietary fatty acid uptake in IGT+ individuals not explained by difference in age, body fat, central obesity markers, or sex; 2) an association between the latter myocardial metabolic abnormality and reduction in systolic and diastolic left ventricular functions and increased myocardial oxidative metabolism; and 3) no significant changes in liver and skeletal muscle dietary fatty acid uptake in IGT+ individuals. The present results extend the association between increased myocardial NEFA uptake and oxidation and IGT observed during fasting (16) to postprandial dietary fatty acids. In addition, we confirmed the findings of others of reduced subcutaneous abdominal and visceral adipose tissue fractional uptake of dietary fatty acids in abdominally obese individuals (17,18). We furthermore found a direct association between impaired relative dietary fatty acid uptake in abdominal subcutaneous adipose tissue ...
The misfolding of the cellular prion protein (PrPC) into the disease-associated isoform (PrPSc) and its accumulation as amyloid fibrils in the central nervous system is one of the central events in transmissible spongiform encephalopathies (TSEs). Due to the proteinaceous nature of the causal agent the molecular mechanisms of misfolding, interspecies transmission, neurotoxicity and strain phenomenon remain mostly ill-defined or unknown. Significant advances were made using in vivo and in cellula models, but the limitations of these, primarily due to their inherent complexity and the small amounts of PrPSc that can be obtained, gave rise to the necessity of new model systems ...
Establishment of new model systems is imperative for investigating the developmental basis of organismal diversity. Presently, such models are available for only two orders of Arachnida-Cupiennius salei and Parasteatoda tepidariorum (Araneae), and Archegozetes longisetosus and Tetranychus urticae (Acari). The putative clade "Dromopoda" uniting Scorpiones, Pseudoscorpiones, Solifugae and Opiliones is unrepresented. In order to enrich comparative developmental data for Arachnida, as well as revive embryological study of Opiliones, we investigated the eupnoid harvestman Phalangium opilio as a candidate model organism. In the present study, we sequenced a developmental transcriptome of Phalangium opilio and simultaneously developed protocols for embryo cultivation, fixation, and in situ hybridization. We present data from whole mount in situ hybridization experiments, highlighting the unique morphology of Opiliones using probes for Hox genes (e.g, Ultrabithorax) and leg gap genes (e.g., ...
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
Its usually known that the particle size and particle shape are two irrelevant concepts. But our research shows that the token of particle size is not only related to particle shape, but also related to particle measurement methods. This paper takes sheetlike graphite micropowder for example and gets the function relation between particle shape factor and particle size by analyzing the particle distribution data between laser diffraction and sedimentation. This research provides a new approach for the study of particle shape ...
X-ray and electrochemical studies of organic phases obtained by the extraction of tetravalent cerium, Ce(iv), from aqueous nitric acid (3 M) with tri-n-butyl phosphate (TBP) in n-dodecane reveal a tetranuclear Ce(iv) structural motif. This finding is consistent with the results of previous liquid-liquid extr 2017 PCCP HOT Articles
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
Brachyuran crabs can effectively modulate cardiac stroke volume independently of heart rate in response to abiotic drivers. Non-invasive techniques can help to improve the understanding of cardiac performance parameters of these animals. This study demonstrates the in vivo quantification of cardiac performance parameters through magnetic resonance imaging (MRI) on the edible crab Cancer pagurus. Furthermore, the suitability of signal integrals of infra-red photoplethysmographs as a qualitative tool is assessed under severe hypoxia. Multi-slice self-gated cardiac cinematic (CINE) MRI revealed the structure and motion of the ventricle to quantify heart rates, end-diastolic volume, end-systolic volume, stroke volume and ejection fraction. CINE MRI showed that stroke volumes increased under hypoxia because of a reduction of end-systolic volumes at constant end-diastolic volumes. Plethysmograph recordings allowed for automated heart rate measurements but determination of a qualitative stroke volume proxy
Classically, chronic intestinal angina is caused by a reduction in mesenteric blood flow [1], and the pathophysiology of most cases is atherosclerotic stenosis of the celiac and mesenteric arteries. Arterial dissection, fibromuscular dysplasia, and vasculitis are included as rare etiologies of arterial narrowing, and the median arcuate ligament of the diaphragm can compress the celiac artery and disturb blood flow (median arcuate ligament syndrome) [5, 6]. Intestinal circulation consists of an abundant collateral blood supply, and chronic intestinal ischemia is associated with high-grade stenosis or occlusion of two or more of the three major vessels: the celiac artery, the superior and inferior mesenteric arteries [7, 8]. In our case, the arterial lesions were relatively mild compared with previous reports [9, 10]; thus, we hypothesized that our patients major symptoms were not due to his arterial lesions alone.. Specifically, our patients symptoms depended greatly on his hemodynamic ...
The SIRT procedure delivers radiation to the liver in minuscule spheres about the size of a speck of flour. The spheres, which contain radioactive yttrium-90, are injected into the main hepatic artery and delivered directly to the cancer tumor. Since healthy liver tissue draws most of its blood from the portal vein, the spheres delivered through the hepatic artery target the cancerous tumor growth in the liver. These spheres are just large enough to get stuck in the blood vessels of the tumor and directly irradiate it. This ability to direct the radiation limits the amount of radiation that reaches healthy liver tissue and other parts of the body. To determine the amount of radioactive spheres that will reach the tumor, radiologists inject a similar solution of radioactive particles that allows them to view a snapshot of the particle distribution, explains Ronald Weiner, a radiopharmacist and associate professor of diagnostic imaging at the Health Center. We can see how much of the ...
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 .
Find sin(s+t) and (s-t) if cos(s)= 1/5 and sin(t) = 3/5 and s and t are in quadrant 1. =Sin(s)cos(t) + Cos(s)Sin(t) =Sin(1/5)Cos(3/5) + Cos(-1/5)Sin(3/5) = 0.389418 Sin(s-t) =sin(s)cos(t) - cos(s)sin(t) =sin(-3/5)cos(1/5) - cos(1/5)sin(3/5) =Sin-3/5 cos-3/5 = -0.46602 HELP ... ...
Iron overload is a serious condition for patients with thalassemia major, transfusion-dependent sickle cell anemia and inherited disorders of iron metabolism. Liver biopsy is the prevailing clinical standard for estimation of hepatic iron content; however, it is invasive, painful, expensive, prone to sampling error and provides only indirect information regarding other inaccessible organs (heart, pancreas). As an alternative, MRI is becoming increasingly important in non-invasive quantification of tissue iron, overcoming the drawbacks of traditional techniques. Super-paramagnetic substances such as iron-oxide particles produce magnetic field disturbances that increase MRI relaxivities R1 (1/T1), R2 (1/T2) and R2* (1/T2*), indirectly reflecting tissue iron loading. These relationships vary with iron species and with organ, requiring tissue biopsy for calibration, a critical limitation for inaccessible organs. Although recent work has demonstrated clinically-valid estimates of iron for human ...
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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
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. ...
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For patients undergoing cardiac surgery, persistent postoperative pain decreases over time and is 9.5% at 24 months after surgery.

Radioactive Waste Management/Spent Nuclear Fuel - Wikibooks, open books for an open worldRadioactive Waste Management/Spent Nuclear Fuel - Wikibooks, open books for an open world

Cerium,Ce, Nd). Many of the fission products are either non-radioactive or only short-lived radioisotopes. But a considerable ... La cerium,Ce praseodymium,Pr neodymium,Nd promethium,Pm samarium,Sm europium,Eu. -. -. -. Yes. ... number are medium to long-lived radioisotopes such as 90Sr, 137Cs, 99Tc and 129I. Research has been conducted by several ...
more infohttps://en.wikibooks.org/wiki/Radioactive_Waste_Management/Spent_Nuclear_Fuel

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

Cerium Isotopes
     Summary Report | CureHunterCerium Isotopes Summary Report | CureHunter

Stable cerium atoms that have the same atomic number as the element cerium, but differ in atomic weight. Ce-136, 138, and 142 ... Cerium Isotopes. Subscribe to New Research on 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. ...
more infohttp://www.curehunter.com/public/keywordSummaryD002564-Cerium-Isotopes.do

List of MeSH codes (D01) - WikipediaList of MeSH codes (D01) - Wikipedia

... calcium radioisotopes MeSH D01.496.123.328 --- carbon radioisotopes MeSH D01.496.156.300 --- cerium radioisotopes MeSH D01.496. ... calcium radioisotopes MeSH D01.496.749.154 --- carbon radioisotopes MeSH D01.496.749.185 --- cerium radioisotopes MeSH D01.496. ... cobalt radioisotopes MeSH D01.496.360.400 --- gallium radioisotopes MeSH D01.496.381.550 --- gold radioisotopes MeSH D01.496. ... iron radioisotopes MeSH D01.496.532.500 --- mercury radioisotopes MeSH D01.496.586.520 --- nitrogen radioisotopes MeSH D01.496. ...
more infohttps://en.wikipedia.org/wiki/List_of_MeSH_codes_(D01)

NAVER Academic > Search...NAVER Academic > Search...

Animals, Cerium Radioisotopes, Dogs, Female, Hemodynamics, drug effects, Injections, Intravenous, Kinetics, Liver, radionuclide ...
more infohttps://academic.naver.com/search.naver?field=3&query=JOURNAL+OF+PHARMACEUTICAL+SCIENCES+70%EA%B6%8C+6%ED%98%B8

Chapter 1. Digestion in Teleost FishesChapter 1. Digestion in Teleost Fishes

Substances used include chromium oxide (Cr2O3) and radio-isotopes such as cerium-141. A variety of inert materials have been ... Use of radioisotope-labeled lipids in cod suggested that the cods lipase acted in the same manner as mammalian pancreatic ...
more infohttp://www.fao.org/docrep/X5738E/x5738e02.htm

acupuncture east bay | Lamorinda Healing Artsacupuncture east bay | Lamorinda Healing Arts

Besides I-131, there are other toxic radio-isotopes, including cerium 137 and plutonium. Dr. Gabriel Cousens has provided some ...
more infohttp://lamorindaacupuncture.com/tag/acupuncture-east-bay/

Radioisotopes as tracers for reactions in molten fluoride media; Les radioisotopes comme indicateurs des reactions se...Radioisotopes as tracers for reactions in molten fluoride media; Les radioisotopes comme indicateurs des reactions se...

37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 07 ISOTOPES AND RADIATION SOURCES; BERYLLIUM FLUORIDES; CERIUM ... ETDEWEB / Search Results / Radioisotopes as tracers for reactions in molten fluoride media; Les radioisotopes comme indicateurs ... title = {Radioisotopes as tracers for reactions in molten fluoride media; Les radioisotopes comme indicateurs des reactions se ... Radioisotopes as tracers for reactions in molten fluoride media; Les radioisotopes comme indicateurs des reactions se ...
more infohttps://www.osti.gov/etdeweb/biblio/22025755

Isotopes of cerium - WikipediaIsotopes of cerium - Wikipedia

There are 35 radioisotopes that have been characterized, with the most stable being 144Ce, with a half-life of 284.893 days; ... 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 ...
more infohttps://en.wikipedia.org/wiki/Isotopes_of_cerium

radiation - Is Japans Fukushima nuclear disaster on par with Chernobyl? - Skeptics Stack Exchangeradiation - Is Japan's Fukushima nuclear disaster 'on par' with Chernobyl? - Skeptics Stack Exchange

The release of radioisotopes from the nuclear fuel was largely controlled by their boiling points, and the majority of the ... cerium-144 and the transuranic elements, including neptunium, plutonium and the minor actinides, embedded in a uranium oxide ... Amount and types of radioisotopes. While parts of the fuel rods and graphite particles were ejected into the atmosphere at ... From the Wikipedia article on the Chernobyl disaster remarking on the radioisotopes released from Chernobyl:. ...
more infohttps://skeptics.stackexchange.com/questions/2069/is-japans-fukushima-nuclear-disaster-on-par-with-chernobyl

Process for para-xylene production from light aliphatics - UOP LLCProcess for para-xylene production from light aliphatics - UOP LLC

In the proceedings of the 1962 Radioisotopes Physical Science Industrial Process Conference at pages 205-216, Cannings et al. ... teach dehydrocyclization of 2,2,4-trimethylpentane over a potassium- and cerium-promoted chromia-alumina catalyst to ... Canings et al., 1962 Radioisotopes Physical Science Industrial Process Conference, pp. 205-216. ... cerium and lead being particularly favored. If present, the concentration of a metal modifier in the catalyst may be within the ...
more infohttp://www.freepatentsonline.com/7439409.html

AntiRad-Plus | Drinking Water Anti-Radiation Cartridge | Radioisotope, Heavy Metal and Chemical reductionAntiRad-Plus | Drinking Water Anti-Radiation Cartridge | Radioisotope, Heavy Metal and Chemical reduction

Addresses the major radioisotopes from Fukushima Disaster. a. Cesium-137 /134 b. Strontium-90 c. Iodine-131 d. Radium e. Cerium ... cation-exchange potential and Radioisotope Adsorption. In exchange for absorbing radiation, Zeolite releases trace amounts of ...
more infohttp://www.pureeffectfilters.com/cartridges/antirad-plus.html

Metal Contamination of Food (ebook) by Conor Reilly | 9780470995099Metal Contamination of Food (ebook) by Conor Reilly | 9780470995099

Radioisotopes; The catalytic metals; The electronic metals; Germanium; Tantalum; Caesium; Barium, beryllium, thallium and the ... other metals - summing up; Bismuth; Lithium; Zirconium; Cerium and the other rare earth elements; The remaining metals: summing ...
more infohttps://www.ebooks.com/214166/metal-contamination-of-food/reilly-conor/

Copper Radioisotopes | Profiles RNSCopper Radioisotopes | Profiles RNS

Cerium Radioisotopes. *Cesium Radioisotopes. *Chromium Radioisotopes. *Cobalt Radioisotopes. *Copper Radioisotopes. *Fluorine ... "Copper Radioisotopes" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical ... This graph shows the total number of publications written about "Copper Radioisotopes" by people in this website by year, and ... Below are the most recent publications written about "Copper Radioisotopes" by people in Profiles. ...
more infohttps://profiles.umassmed.edu/display/125884

RADIOISOTOPE FUELED AUXILIARY POWER UNIT. Quarterly Progress Report No. 6, April 1958-July 1958 - Digital LibraryRADIOISOTOPE FUELED AUXILIARY POWER UNIT. Quarterly Progress Report No. 6, April 1958-July 1958 - Digital Library

RADIOISOTOPE FUELED AUXILIARY POWER UNIT. Quarterly Progress Report No. 6, April 1958-July 1958, report, October 31, 1963; ... RADIOISOTOPE FUELED AUXILIARY POWER UNIT. Quarterly Progress Report No. 6, April 1958-July 1958 ...
more infohttps://digital.library.unt.edu/ark%3A/67531/metadc1034430/

Radioisotope thermoelectric generator - WikipediaRadioisotope thermoelectric generator - Wikipedia

... cerium-144, ruthenium-106, cobalt-60, curium-242, americium-241 and thulium isotopes have also been studied. ... Electrostatic-boosted radioisotope heat sourcesEdit. A power enhancement for radioisotope heat sources based on a self-induced ... Wikimedia Commons has media related to Radioisotope thermoelectric generators.. *NASA Radioisotope Power Systems website - RTG ... Multi-Mission Radioisotope Thermoelectric GeneratorEdit. NASA is developing a Multi-Mission Radioisotope Thermoelectric ...
more infohttps://en.m.wikipedia.org/wiki/Radioisotope_thermoelectric_generator

Nitrogen Radioisotopes | Profiles RNSNitrogen Radioisotopes | Profiles RNS

Barium Radioisotopes. *Bromine Radioisotopes. *Cadmium Radioisotopes. *Calcium Radioisotopes. *Carbon Radioisotopes. *Cerium ... "Nitrogen Radioisotopes" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical ... This graph shows the total number of publications written about "Nitrogen Radioisotopes" by people in this website by year, and ... Below are the most recent publications written about "Nitrogen Radioisotopes" by people in Profiles. ...
more infohttps://profiles.rush.edu/display/11025

Fluorine Radioisotopes | Profiles RNSFluorine Radioisotopes | Profiles RNS

Cerium Radioisotopes. *Cesium Radioisotopes. *Chromium Radioisotopes. *Cobalt Radioisotopes. *Copper Radioisotopes. *Fluorine ... "Fluorine Radioisotopes" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical ... This graph shows the total number of publications written about "Fluorine Radioisotopes" by people in this website by year, and ... Below are the most recent publications written about "Fluorine Radioisotopes" by people in Profiles. ...
more infohttps://profiles.wakehealth.edu/display/102246

Index to the US Patent ClassificationIndex to the US Patent Classification

METALLURGY ALLOYS CERIUM AND ......420/1+ NUCLEAR REACTIONS & SYSTEMS .......376 NEUTRON TYPE SYSTEM ............250/390.1+ ... 436/545 RADIOISOTOPE POWERED GENERATOR ...... 310/301+ RADIOISOTOPIC IODINE FOR TESTING .... 436/804* RADIOMETERS LIGHT METERS ...
more infohttp://www.ibiblio.org/patents/index/indexr1.html

RADIOISOTOPESRADIOISOTOPES

The patient was treated topically with cerium nitrate/silver sulfadiazine cream and cerium nitrate solution for 3 months. Then ... These results suggest that prolonged topical chemotherapy of cerium nitrate/silver sulfadiazine cream and cerium nitrate ... A large amount of silver was detected both in the liver and in the kidney and a trace of cerium only in the liver. A ... Silver and cerium in the liver and the kidney from severely burned infant were analyzed by neutron activation method.. ...
more infohttps://www.jstage.jst.go.jp/browse/radioisotopes/32/2/_contents/-char/en

Isotope Supplier:  Stable Isotopes and Radioisotopes from ISOFLEX - Safety Data Sheets (SDS)Isotope Supplier: Stable Isotopes and Radioisotopes from ISOFLEX - Safety Data Sheets (SDS)

Cerium Oxide. Chromium. Chromium Oxide. Copper. Copper(II) Oxide. Curium Nitrate. Dysprosium Oxide. Erbium Metal. Erbium Oxide ...
more infohttps://isoflex.com/resources/msds-documents

Patent US6368586 - Methods and compositions for enhancing the bioadhesive properties of polymers - Google PatentsPatent US6368586 - Methods and compositions for enhancing the bioadhesive properties of polymers - Google Patents

Corrosion Inhibiting Coating Based on Cerium Oxide and a Catecholic Polymer. CN1984708B. Jun 24, 2005. Jan 29, 2014. 皈宵飝利浠田孑肚仾有 ... Compositions and associated methods for radioisotope-binding microparticles. US9744137. Aug 31, 2007. Aug 29, 2017. Supernus ... Corrosion inhibiting coating based on cerium oxide and a catecholic polymer. US9622983. Sep 8, 2016. Apr 18, 2017. Supernus ... Microspheres capable of binding radioisotopes, optionally comprising metallic microparticles, and methods of use thereof. ...
more infohttp://www.google.com/patents/US6368586?dq=7,134,016

Dr. Nerine J. Cherepy ProfileDr. Nerine J. Cherepy Profile

... the ideal scintillator for use in handheld radioisotope identification devices. A 6-lb SrI2(Eu) radioisotope identifier is ... We have fabricated Cerium-doped Gadolinium Garnets with light yields of ~50,000 Ph/MeV and energy resolution of ,5% at 662 keV ... We measure integral light yields in excess of 80,000 Ph/MeV with Cerium-doped Garnets, and excellent optical quality. Avalanche ... Garnet samples exhibiting a significant fraction of Cerium dopant in the tetravalent valence also exhibit: faster overall ...
more infohttps://www.spiedigitallibrary.org/profile/Nerine.Cherepy-13681
  • A large amount of silver was detected both in the liver and in the kidney and a trace of cerium only in the liver. (go.jp)
  • Chemical reactions which may be useful for removing certain constituents from molten fluoride solution have been examined by use of appropriate radioisotopes and standard counting procedures. (osti.gov)
  • Classes of reactions studied have included (1) isotopic exchange between solute tracer and insoluble compound, (2) partition of solute between the melt and a solid solution of a similar compound, and (3) precipitation of the radioisotope as insoluble compound. (osti.gov)
  • author) [French] Les auteurs ont etudie, au moyen do radioisotopes appropries et des procedes de comptage habituels, les reactions chimiques qui peuvent contribuer a l'elimination do certains constituants en solution dans des fluorures fondus. (osti.gov)
  • L'addition de CeF{sub 3} non actif a chacun de ces systemes augmente la concentration de radioisotopes dans la solution, conformement a la loi d'action des masses. (osti.gov)
  • The patient was treated topically with cerium nitrate/silver sulfadiazine cream and cerium nitrate solution for 3 months. (go.jp)