Barium Radioisotopes: Unstable isotopes of barium that decay or disintegrate emitting radiation. Ba atoms with atomic weights 126-129, 131, 133, and 139-143 are radioactive barium isotopes.Barium Sulfate: A compound used as an x-ray contrast medium that occurs in nature as the mineral barite. It is also used in various manufacturing applications and mixed into heavy concrete to serve as a radiation shield.Barium: An element of the alkaline earth group of metals. It has an atomic symbol Ba, atomic number 56, and atomic weight 138. All of its acid-soluble salts are poisonous.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.Barium Compounds: Inorganic compounds that contain barium as an integral part of the molecule.Metals, Alkaline Earth: Metals that constitute the group 2 (formerly group IIa) of the periodic table.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.Yttrium Isotopes: Stable yttrium atoms that have the same atomic number as the element yttrium, but differ in atomic weight. Y-89 is the only naturally occurring stable isotope of yttrium.Oxygen Compounds: Inorganic compounds that contain oxygen as an integral part of the molecule.Nitrogen Compounds: Inorganic compounds that contain nitrogen as an integral part of the molecule.Strontium: An element of the alkaline earth family of metals. It has the atomic symbol Sr, atomic number 38, and atomic weight 87.62.Edetic Acid: A chelating agent that sequesters a variety of polyvalent cations such as CALCIUM. It is used in pharmaceutical manufacturing and as a food additive.Cesium Radioisotopes: Unstable isotopes of cesium that decay or disintegrate emitting radiation. Cs atoms with atomic weights of 123, 125-132, and 134-145 are radioactive cesium isotopes.Cesium Isotopes: Stable cesium atoms that have the same atomic number as the element cesium, but differ in atomic weight. Cs-133 is a naturally occurring isotope.Carbonates: Salts or ions of the theoretical carbonic acid, containing the radical CO2(3-). Carbonates are readily decomposed by acids. The carbonates of the alkali metals are water-soluble; all others are insoluble. (From Grant & Hackh's Chemical Dictionary, 5th ed)Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Calcium Carbonate: Carbonic acid calcium salt (CaCO3). An odorless, tasteless powder or crystal that occurs in nature. It is used therapeutically as a phosphate buffer in hemodialysis patients and as a calcium supplement.Brachytherapy: A collective term for interstitial, intracavity, and surface radiotherapy. It uses small sealed or partly-sealed sources that may be placed on or near the body surface or within a natural body cavity or implanted directly into the tissues.Diketopiperazines: Piperazines with two keto oxygens.Parenteral Nutrition Solutions: Specialized solutions for PARENTERAL NUTRITION. They may contain a variety of MICRONUTRIENTS; VITAMINS; AMINO ACIDS; CARBOHYDRATES; LIPIDS; and SALTS.Cell-Derived Microparticles: Extracellular vesicles generated by the shedding of CELL MEMBRANE blebs.Illusions: The misinterpretation of a real external, sensory experience.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.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).Oxepins: Compounds based on a 7-membered heterocyclic ring including an oxygen. They can be considered a medium ring ether. A natural source is the MONTANOA plant genus. Some dibenzo-dioxepins, called depsidones, are found in GARCINIA plants.Cellular Phone: Analog or digital communications device in which the user has a wireless connection from a telephone to a nearby transmitter. It is termed cellular because the service area is divided into multiple "cells." As the user moves from one cell area to another, the call is transferred to the local transmitter.Mobile Applications: Computer programs or software installed on mobile electronic devices which support a wide range of functions and uses which include television, telephone, video, music, word processing, and Internet service.GTP-Binding Protein alpha Subunits, Gs: A family of heterotrimeric GTP-binding protein alpha subunits that activate ADENYLYL CYCLASES.Mitochondrial Dynamics: The continuous remodeling of MITOCHONDRIA shape by fission and fusion in response to physiological conditions.Computers, Handheld: A type of MICROCOMPUTER, sometimes called a personal digital assistant, that is very small and portable and fitting in a hand. They are convenient to use in clinical and other field situations for quick data management. They usually require docking with MICROCOMPUTERS for updates.Armadillo Domain Proteins: A family of proteins that contain several 42-amino acid repeat domains and are homologous to the Drosophila armadillo protein. They bind to other proteins through their armadillo domains and play a variety of roles in the CELL including SIGNAL TRANSDUCTION, regulation of DESMOSOME assembly, and CELL ADHESION.Repetition Priming: A type of procedural memory manifested as a change in the ability to identify an item as a result of a previous encounter with the item or stimuli.Radioactivity: The spontaneous transformation of a nuclide into one or more different nuclides, accompanied by either the emission of particles from the nucleus, nuclear capture or ejection of orbital electrons, or fission. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)Beta Particles: High energy POSITRONS or ELECTRONS ejected from a disintegrating atomic nucleus.Alpha Particles: Positively charged particles composed of two protons and two NEUTRONS, i.e. equivalent to HELIUM nuclei, which are emitted during disintegration of heavy ISOTOPES. Alpha rays have very strong ionizing power, but weak penetrability.Food Contamination, RadioactiveNuclear Energy: Energy released by nuclear fission or nuclear fusion.Oncology Service, Hospital: The hospital department responsible for the administration and provision of diagnostic and therapeutic services for the cancer patient.Neuropeptide Y: A 36-amino acid peptide present in many organs and in many sympathetic noradrenergic neurons. It has vasoconstrictor and natriuretic activity and regulates local blood flow, glandular secretion, and smooth muscle activity. The peptide also stimulates feeding and drinking behavior and influences secretion of pituitary hormones.Cancer Care Facilities: Institutions specializing in the care of cancer patients.Pediatrics: A medical specialty concerned with maintaining health and providing medical care to children from birth to adolescence.Abdominal NeoplasmsNeoplasms: New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms.Receptors, Neuropeptide Y: Cell surface proteins that bind neuropeptide Y with high affinity and trigger intracellular changes which influence the behavior of cells.Gastroparesis: Chronic delayed gastric emptying. Gastroparesis may be caused by motor dysfunction or paralysis of STOMACH muscles or may be associated with other systemic diseases such as DIABETES MELLITUS.Pylorus: The region of the STOMACH at the junction with the DUODENUM. It is marked by the thickening of circular muscle layers forming the pyloric sphincter to control the opening and closure of the lumen.Gastric Emptying: The evacuation of food from the stomach into the duodenum.Botulinum Toxins: Toxic proteins produced from the species CLOSTRIDIUM BOTULINUM. The toxins are synthesized as a single peptide chain which is processed into a mature protein consisting of a heavy chain and light chain joined via a disulfide bond. The botulinum toxin light chain is a zinc-dependent protease which is released from the heavy chain upon ENDOCYTOSIS into PRESYNAPTIC NERVE ENDINGS. Once inside the cell the botulinum toxin light chain cleaves specific SNARE proteins which are essential for secretion of ACETYLCHOLINE by SYNAPTIC VESICLES. This inhibition of acetylcholine release results in muscular PARALYSIS.Botulinum Toxins, Type A: A serotype of botulinum toxins that has specificity for cleavage of SYNAPTOSOMAL-ASSOCIATED PROTEIN 25.Blood Glucose: Glucose in blood.Eating Disorders: A group of disorders characterized by physiological and psychological disturbances in appetite or food intake.

Serum pepsinogen and gastric cancer screening. (1/3)

Since the 1990's, the test for serum pepsinogen as a marker for chronic atrophic gastritis has been incorporated into gastric cancer screening programs, on a trial basis, to identify people at high risk for gastric cancer. The addition of the serum test to the cancer screening program has been shown to improve the detection rate of cancer and pepsinogen testing is useful in detecting early-stage gastric cancers arising from atrophic gastric mucosa, which macroscopically tend to be elevated and histologically differentiated. Furthermore, the cost for the detection of a single cancer case is much less than that for conventional screening. Thus, with the introduction of pepsinogen testing, complimenting barium X-ray, a more efficient screening system is available.  (+info)

[(76) Br]BMK-152, a nonpeptide analogue, with high affinity and low nonspecific binding for the corticotropin-releasing factor type 1 receptor. (2/3)

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Room-temperature semiconductor detectors for in vivo monitoring of internal contamination. (3/3)

In vivo monitoring of low-energy X-ray and gamma-ray emitters has always been a difficult task, primarily because of lack of accuracy and the high detection limits of classical techniques. Various types of PIN diodes (diodes with a large intrinsic zone) were tested in the Radiation Protection Department of the Studie Centrum voor Kernenergie, Centre d'etude de l'Energie Nucleaire (Mol, Belgium) in the measurement of radioactive body burden by direct methods. Current research is oriented toward the use of room-temperature diodes for the detection of low-energy photons escaping the body. In this paper, a new counting technique that involves a portable jacket containing the diodes is described. The system uses silicon diodes and is used out of shielding room in order to be near the contamination. With this method rapid analysis and long counting times are possible, stress is reduced, and medical treatment can be optimized. CdZnTe detectors were also evaluated for this measurement technique but this type of detector is better adapted for counting inside a shielding room. The improvement of the accuracy of the measurement, taking into account the effect of the ribs, is described here, as well the associated electronics necessary for this type of counting.  (+info)

ortholog of the Eg5 kinesin that plays an essential role in promoting mitotic spindle bipolarity in most animal phyla. This was surprising, because two large deletion alleles of bmk-1 are homozygous viable, and papers had been published concluding that bmk-1 is not essential in C. elegans (with the only detectable requirement being to modestly decrease the rate of P0 spindle elongation during the first embryonic mitotic cell division). However, our bmk-1(or645ts) allele was 100% embryonic-lethal at 25 degrees C, with monopolar oocyte meiotic spindles, consistent with its known role in promoting spindle bipolarity during mitosis in vertebrates. I convinced myself that the two deletion alleles were not null and we had finally discovered the essential function for bmk-1 in C. elegans. We therefore devoted a great deal of effort toward further characterizing this mutant phenotype. However, one day Rene Medema, at the Netherlands Cancer Institute, emailed me asking if they might use our ...
abuse,. (IBM) 80 or below. Used in describing the expected intelligence range of the luser. "Well, but hows this interface going to play with the room-temperature IQ crowd?" This is a much more insulting phrase in countries that use Celsius thermometers. See drool-proof paper. [Jargon File] Last updated: 1996-04-06. ...
Friese K , Aroyo M I , Schwalowsky I , Adiwidjaja G , Bismayer U , Journal of Solid State Chemistry , 165 (2002) p.136-147, The disordered high-temperature structure of (NH4)3H(SO4)2 and its relationship, to the room-temperature phase, Locality: synthetic, Sample: T = 293 K ...
Advanced Materials and Technologies: Growth Structures and Phase Formation in Industrially Room-Temperature Pulsed Laser Deposited FCC Ti-Based Nitride Coatings
Customers can only store whole blood at room-temperature for up to 24hrs before initiation of shipping; otherwise whole blood needs to be refrigerated (2-8°C) for up to 10 days. ,This test is not intended for use on samples of cord blood. ...
Ovsyannikov, S. V.; Bykov, M.; Medvedev, S. A.; Naumov, P. G.; Jesche, A.; Tsirlin, A. A.; Bykova, E.; Chuvashova, I.; Karkin, A. E.; Dyadkin, V. et al.; Chernyshov, D.; Dubrovinsky, L. S.: A Room-Temperature Verwey-type Transition in Iron Oxide, Fe5O6. Angewandte Chemie, International Edition 59, pp. 5632 - 5636 (2020 ...
About Us - Contact Us Disclaimer: All opinions expressed here are those of their authors and not of their employer. The information provided here is for educational purposes only and is not intended to provide medical advice. By accessing the web site, the visitors acknowledge that there is no physician-patient relationship between them and the authors. ...
In this paper, an innovative coaxial-type dielectric barrier discharge plasma generator is proposed to produce the large-volume and visibly uniform cold ar
A room-temperature Kerr-Lens modelocked (KLM) Cr:ZnS laser generates ,70 fs pulses duration (about eight optical cycles) with 5.6 nJ pulse energy and over 100 nm FWHM spectral width at 105-157 MHz repetition rates. The ...
Magikmold® U-740 is an economical, room-temperature curing (RTV), two-part, Shore A40 urethane rubber designed for the manufacture of flexible molds and parts.
A room-temperature superconductor is a hypothetical material that would be capable of exhibiting superconductivity at operating temperatures above 0 °C (273.15 K). While this is not strictly "room temperature", which would be approximately 20-25 °C, it is the temperature at which ice forms and can be reached and easily maintained in an everyday environment. The highest temperature known superconducting material is highly pressurized hydrogen sulfide, the transition temperature of which is 203 K (−70 °C), the highest accepted superconducting critical temperature as of 2015. By substituting a small part of sulfur with phosphorus and using even higher pressures, it has been predicted that it may be possible to raise the critical temperature to above 0 °C and achieve room-temperature superconductivity. Previously the record was held by the cuprates, which have demonstrated superconductivity at atmospheric pressure at temperatures as high as 138 K (−135 °C), and 164 K (−109 °C) under high ...
The room-temperature densification method was developed for Li2MoO4 ceramics and is based on the water-solubility of Li2MoO4. It can be used for the fabrication of Li2MoO4 ceramics instead of conventional thermal sintering. The method utilizes a small amount of aqueous phase formed by moistening the Li2MoO4 powder. The densification occurs during sample pressing as the solution incorporates the pores between the powder particles and recrystallizes. The contact points of the particles provide a high pressure zone, where solubility is increased, whereas the pores act as a suitable place for the precipitation of the solution. Any residual water is removed by post-processing typically at 120 °C. The method is suitable also for Li2MoO4 composite ceramics with up to 30 volume-% of filler material, enabling the optimization of the dielectric properties. "A room-temperature fabrication method for microwave dielectric Li2MoO4 ceramics and their applicability for antennas ...
Y. Han and S. B. Lee, "Room-Temperature Tunable Multiwavelength Erbium-Doped Fiber Laser Based on Degenerate Four-Wave Mixing Effect in Dispersion-Shifted Fiber," in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, Technical Digest (CD) (Optical Society of America, 2006), paper OWI38 ...
Methods by which synthetic adhesives can be cured at ambient temperatures are covered. The alkyl cyanoacrylates, epoxies, and MPL monomers can be cured, with little shrinkage, to obtain metal adhesive bonds which compare favorably to those obtained by high temperature modes of curing. An investigation by which novolac epoxies were rendered more flexible with accompanying increases in the temperature and salt spray resistance is described. ...
The development of solid electrolytes with superior electrical and electrochemical performances for the room-temperature operation of sodium (Na)-based batteries is at the infant stage and still remains a challenge. Herein, we, for the first time, report hybrid solid electrolytes consisting of PEO20-NaClO4-5 2017 Journal of Materials Chemistry A HOT Papers
For those who have the program running . . . Can it provide more output? Comparing results with theory would be much more straightforward if one could count only the number of mutations that have fixed, rather than all present in the population; it would also be useful to see the allele frequency spectrum. (And if it cant do those things, then it is of no interest as a population genetics tool ...
Materials scientists at Ecole polytechnique fédérale de Lausanne, or EPFL, proposes methods for storing vaccines without refrigeration for many days.
Proteoglycan 2 (PRG2, also known as eosinophil major basic protein) is a protein encoded by this gene as the predominant constituent of the crystalline core of the eosinophil granule. Elevated levels of the preform of this protein are present in placenta and pregnancy serum. Here it exists as a complex with several other proteins including C3dg, pregnancy-associated plasma protein A (PAPPA), and angiotensin (AGT). PRG2 may be involved in antiparasitic defense mechanisms as a cytotoxin and helminthotoxin, and in immune hypersensitivity reactions. The protein has been directly implicated in epithelial cell damage, exfoliation and bronchospasm in allergic diseases.. This monoclonal antibody detects eosinophil major basic protein (BMK-13). This mAb may be used by researchers working in the field(s) of Downs syndrome diagnostics, asthma and cardiology.. Previously validated monoclonal antibody used for R&D purposes. PRG2 is also known as BMPG, MBP, MBP1, Eosinophil major basic protein, proteoglycan ...
Room-temperature ferromagnetism was observed in undoped and Fe2+(3+)-doped CeO2 nanocrystals. In Fe-doped samples the enhancement of ferromagnetic ordering occurs by changing the valence state of Fe ions, whereas Raman spectra demonstrated strong electron-molecular vibrational coupling and increase in oxygen vacancy concentration. Air annealing showed degradation of ferromagnetic ordering and appearance of hematite phase in Fe3+-doped sample. The observed ferromagnetic coupling in Fe-doped samples, associated with the presence of magnetic ions mediated by single charged O2- vacancies, demonstrated that valence state of dopant has a strong influence on magnetic properties of CeO2 nanoparticles ...
An analytical investigation was conducted to examine and predict the capillary dryout and rewetting behaviors occurring at the evaporator section of room-temperature heat pipes during startup. The physical model is based on the displacement of a leading-edge front of a thin liquid layer flowing on finite groove uniformly heated with a constant heat flux. Numerical solutions were obtained by a fully implicit Finite Difference Method, accounting for the movement of the liquid and a known time-variable temperature boundary condition at the liquid front. The velocity and position of the liquid front were found to vary with the applied heat flux, the initial conditions, and the thermophysical properties of the working fluid. The wall temperature distribution in the dried region was also predicted. The working fluid temperature compared well with experimental results. The analysis indicated that a partial or full dryout at the evaporator section may exist for certain heat fluxes.. Copyright © 2005 by ...
Researchers from Arizona State and Tsinghua Universities achieved a room-temperature CMOS laser using a molybdenum ditelluride monolayer over a silicon cavity.
The collision-induced absorption structure accompanying the magnetic-dipole-allowed $1.27 \mu$m band of $O_{2}$, originally observed in the laboratory by Badger, Wright, and Whitlock, has been measured at $0.03 cm^{-1}$ resolution using a Fourier-transform infrared spectrometer. Spectra were recorded at an optical pathlength of 84 m for pure $O_{2}$, at temperatures between 253 K to 293 K and pressures to 9 atm. Several spectra were also measured for room-temperature $O_{2}/N_{2}$ mixtures. These results presently being analyzed will allow comparison with recent measurements of these bands in the atmosphere by Mlawer. Clough, Brown, Stephen, Landry, Goldman, and Murcray. ...
Irradiation induced pulsations of reverse biased metal oxide/silicon structures. Fink, D.; Kiv, A.; Fuks, D.; Tabacnics, M.; de A. Rizutto, M.; de O. D. Silva, A.; Chandra, A.; Golovanov, V.; Ivanovskaya, M.; Khirunenko, L. // Applied Physics Letters;8/20/2007, Vol. 91 Issue 8, p083512 Specific electronic features have been found in structures consisting of metal oxide layers on silicon substrates upon swift heavy ion irradiation. These features are linked to the appearance of radiation-induced negative differential resistances in the structures. In the reversed bias direction... ...
The illustration on the left shows the variations of light intensity within a nanolaser. The figure on the right shows schematically a nanolaser with a metallic cavity, where the center red region confines electrons and the grey enclosure is a silver cavity. The blue layer on top is a substrate where the laser structure is grown. The orange-yellow color on top indicates the light emission. Research led by Arizona state University engineering professor Cun-Zheng Ning has produced nanolasers that can operate under a battery power at room temperatures instead of only in refrigerated conditions which opens the door to use of the lasers in many practical applications in modern electronics. ...
The possible transition to a new generation of electronic devices based on spintronics has been given a boost with a method which would let the technology function at room temperature.. A team of researchers at Aarhus University reckon that it has made a massive leap forward in making spintronics a viable technology sooner, rather than later. With current computer electronics being produced at ever lower processes scientists are looking at spintronics as a method to enable faster and more efficient processors in the future. While such a move is not vital in the short term, spintronics has been in developmental stages in many labs.. But now the scientists believe they have brought forward the use of spintronics significantly by devising a method to make it work under normal conditions.. This is down to a topological insulator material bismuth selenide which can help to regulate the flow of electrons used to record a rotational spin. Because the effect is so small it is necessary for the ...
Another use is as a carrier of strontium-90 radioisotope in radioisotope thermoelectric generators. Greenwood, Norman N.; ... Its optical properties are intermediate to calcium fluoride and barium fluoride. Strontium fluoride is used as an optical ...
133Ba and 241Am were created by the neutron activation of barium and plutonium inside the bomb. The barium was present in the ... A paper on the radioisotopes left on an island by the French nuclear bombs tests of the 20th century has been printed by the ... A recent paper reports the levels of long lived radioisotopes in the trinitite. 152Eu and 154Eu was mainly formed by the ... Many atomic batteries have been of the Radioisotope thermoelectric generator (RTG) type. The Plutonium-238 used in RTGs has a ...
... includes the study of both natural and man-made radioisotopes. All radioisotopes are unstable isotopes of ... Gamma radiation requires an appreciable amount of heavy metal radiation shielding (usually lead or barium-based) to reduce its ... Radiochemistry also includes the study of the behaviour of radioisotopes in the environment; for instance, a forest or grass ... for example the action of cosmic rays on the air is responsible for the formation of radioisotopes (such as 14C and 32P), the ...
Beryllium-7, beryllium-10, and calcium-41 are trace radioisotopes; calcium-48 and barium-130 have very long half-lives and thus ... Calcium and barium are weakly radioactive: calcium contains about 0.1874% cacium-41, and barium contains about 0.1062% barium- ... such as barium nitrate. These in turn are thermally decompressed into barium oxide, which eventually yields pure barium after a ... Barium has some use in vacuum tubes to remove gases, and barium sulfate has many uses in the petroleum industry, as well as ...
Like calcium and barium, as well as the alkali metals and the divalent lanthanides europium and ytterbium, strontium metal ... "Radioisotopes That May Impact Food Resources" (PDF). Epidemiology, Health and Social Services, State of Alaska. Retrieved 14 ... The metal itself has a limited use as a getter, to remove unwanted gases in vacuums by reacting with them, although barium may ... It is softer than calcium and harder than barium. Its melting (777 °C) and boiling (1655 °C) points are lower than those of ...
Some of these radioisotopes are tritium, carbon-14 and phosphorus-32. Here is a list of radioisotopes formed by the action of ... The barium was present in the form of the nitrate in the chemical explosives used while the plutonium was the fissile fuel used ... This radioisotope can be released from the nuclear fuel cycle; this is the radioisotope responsible for the majority of the ... In addition some natural radioisotopes are present. A recent paper reports the levels of long-lived radioisotopes in the ...
Radioisotopes of francium would presumably be dangerous as well due to their high decay energy and short half-life, but none ... Redko, M. Y.; Huang, R. H.; Jackson, J. E.; Harrison, J. F.; Dye, J. L. (2003). "Barium azacryptand sodide, the first alkalide ... Radioisotopes of caesium require special precautions: the improper handling of caesium-137 gamma ray sources can lead to ... Radioisotope Brief: Cesium-137 (Cs-137). U.S. National Center for Environmental Health The Radiological Accident in Goiânia. ...
Beryllium-7, beryllium-10, and calcium-41 are trace radioisotopes; calcium-48 and barium-130 have very long half-lives and thus ... Barium has some use in vacuum tubes to remove gases,[50] and barium sulfate has many uses in the petroleum industry,[4] as well ... Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium ... Of the six alkaline earth metals, beryllium, calcium, barium, and radium have at least one naturally occurring radioisotope; ...
On occasion, the radioisotope is a simple soluble dissolved ion, such as an isotope of gallium(III). Most of the time, though, ... barium-140 and europium-154) and activation products (chromium-51 and cobalt-58). These may be imaged using SPECT in order to ... SPECT is more widely available, because the radioisotope used is longer-lasting and far less expensive in SPECT, and the gamma ... In the nuclear power sector, the SPECT technique can be applied to image radioisotope distributions in irradiated nuclear fuels ...
... barium radioisotopes MeSH D01.496.749.090 --- bromine radioisotopes MeSH D01.496.749.108 --- cadmium radioisotopes MeSH D01.496 ... calcium radioisotopes MeSH D01.496.123.328 --- carbon radioisotopes MeSH D01.496.156.300 --- 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. ...
... is a barium neutron activation product, the barium in the Trinity device coming from the slow explosive lens employed in the ... Salted bomb Table of nuclides Manual for reactor produced radioisotopes from the International Atomic Energy Agency Neeb, Karl ... as a result of production of neutron-rich radioisotopes. Some atoms require more than one neutron to become unstable, which ...
137Cs beta decays to barium-137m (a short-lived nuclear isomer) then to nonradioactive barium-137, and is also a strong emitter ... The longest-lived radioisotopes are 135Cs with a half-life of 2.3 million years, 137Cs with a half-life of 30.1671 years and ... Caesium (55Cs; or cesium) has 40 known isotopes, making it, along with barium and mercury, the element with the most isotopes. ... into the stable isotope barium-135. Caesium-135 is one of the 7 long-lived fission products and the only alkaline one. In ...
Some early evidence for nuclear fission was the formation of a short-lived radioisotope of barium which was isolated from ... as it was then standard radiochemical practice to use a barium sulfate carrier precipitate to assist in the isolation of radium ...
Some early evidence for nuclear fission was the formation of a short-lived radioisotope of barium which was isolated from ... ³H, Tritium, the radioisotope of hydrogen, is available at very high specific activities, and compounds with this isotope in ... A short review of the biochemical properties of a series of key long lived radioisotopes can be read on line. 99Tc in nuclear ... In addition, they bombarded aluminium and magnesium with neutrons to make new radioisotopes. Radiochemistry is the chemistry of ...
Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium ... Radioisotopes of caesium require special precautions: the improper handling of caesium-137 gamma ray sources can lead to ... Similar solutions are formed by the heavy divalent alkaline earth metals calcium, strontium, barium, as well as the divalent ... All of the alkali metals except lithium and caesium have at least one naturally occurring radioisotope: sodium-22 and sodium-24 ...
Primordial radioisotope Believed to undergo β+β+ decay to 132Xe with a half-life over 300×1018 years Theoretically capable of ... Naturally occurring barium (56Ba) is a mix of six stable isotopes and one very long-lived radioactive primordial isotope, ... Barium-114 is predicted to undergo cluster decay, emitting a nucleus of stable 12C to produce 102Sn. However this decay is not ... barium-130, recently identified as being unstable by geochemical means (from analysis of the presence of its daughter xenon-130 ...
used in radioisotope thermoelectric generators (RTGs) and radioisotope heater units as an energy source for spacecraft ... Barium-133 9694 TBq/kg (262 Ci/g) 10.7 years 81.0, 356.0 ... Radioisotopes are also a method of treatment in hemopoietic ... "Radioisotopes in Industry". World Nuclear Association.. *. Martin, James (2006). Physics for Radiation Protection: A Handbook. ... most commonly used medical radioisotope, used as a radioactive tracer Iodine-129 53. 76. 15,700,000 y. β−. 194 Cosmogenic. ...
These include barium swallow, barium meal, barium follow-through, and barium enema.[2] The barium swallow, barium meal, and ... Barium meal and barium follow-through[edit]. For barium meal or barium follow-through examinations, a 6-hour period of fasting ... Depending on the organs to be examined, barium radiographs can be classified into barium swallow, barium meal, barium follow- ... Radioisotope renography. *Sestamibi parathyroid scintigraphy. *Radioactive iodine uptake test. *Bone scintigraphy. * ...
Later 90Sr and 137Cs are the main radioisotopes, being succeeded by 99Tc. In the case of a release of radioactivity from a ... xenon and barium. The threat becomes smaller with the passage of time. Locations where radiation fields once posed immediate ... but a considerable number of the radioisotopes have half-lives longer than a day. The radioactivity in the fission product ...
A lot of barium is formed by the fission process, a short lived barium isotope was confused with radium by some early workers. ... The strontium radioisotopes are very important as strontium is a calcium mimic which is incorporated in bone growth and ... It is the most significant radioisotope left in the area around Chernobyl. IAEA map Caesium-134 is found in spent nuclear fuel ... Because the chemistry of barium and radium the two elements could be coseparated by for instance a precipitation with sulfate ...
Any alpha-emitting radioisotope will suffice, but usually a high specific activity alpha-emitter is chosen, such as radium (Ra- ... To their surprise, they found barium residue, a clear indication that they had instead fissioned uranium nuclei. This discovery ...
Small amounts of barium impurities give the compound a rose color. It is soluble in water, though less so than barium chloride ... More recently discovered radioisotopes, such as cobalt-60 and caesium-137, are replacing radium in even these limited uses ... Radium has a density of 5.5 g/cm3, higher than that of barium, again confirming periodic trends; the radium-barium density ... The remaining residue was then treated with sodium carbonate to convert the barium sulfate into barium carbonate carrying the ...
Shortly after, the process was improved; barium was removed chemically, by double precipitation from a solution as barium ... Other radioisotopes, present as impurities, have a long enough half-life to present a potential problem even decades after the ... The improved process that separated lanthanum from the barium chloride solution had the advantage that barium could be "milked ... Barium was isolated in a purpose-built hot laboratory in Oak Ridge and shipped in a lead pig to Los Alamos, where it was used ...
Posicam used barium fluoride for the scintillation detector and was primarily used by researchers interested in cardiac imaging ... In 2013, Positron entered into a supply agreement with iThemba Labs for radioisotopes, and later the same year, Positron ... Positron acquired Manhattan Isotope Technology (MIT), a processor and manufacturer of radioisotopes based in Lubbock, TX, in ... Positron is headquartered in Westmont, Illinois and holds three facilities: a radioisotope manufacturing facility in Lubbock, ...
The term titanates usually refers to titanium(IV) compounds, as represented by barium titanate (BaTiO3). With a perovskite ... Eleven radioisotopes have been characterized, the most stable being 44Ti with a half-life of 63 years; 45Ti, 184.8 minutes; ...
Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium ... 27 radioisotopes have been observed, with the most stable ones being 169Yb with a half-life of 32.0 days, 175Yb with a half- ...
Beryllium-7, beryllium-10, and calcium-41 are trace radioisotopes; calcium-48 and barium-130 have very long half-lives and thus ... Barium has some use in vacuum tubes to remove gases,[50] and barium sulfate has many uses in the petroleum industry,[4] as well ... Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium ... Of the six alkaline earth metals, beryllium, calcium, barium, and radium have at least one naturally occurring radioisotope; ...
BARIUM COMPOUNDS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BODY; CARBOXYLIC ACIDS; CHELATING AGENTS; DAYS ... MAT.; EDTA; RESPONSE MODIFYING FACTORS; STRONTIUM ISOTOPES; METABOLISM; YTTRIUM ISOTOPES; BARIUM NITRATES; MICE; RADIONUCLIDE ... MINUTES LIVING RADIOISOTOPES; NITRATES; NITROGEN COMPOUNDS; NUCLEI; ODD-EVEN NUCLEI; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANS; ... OXYGEN COMPOUNDS; RADIOISOTOPES; RODENTS; STRONTIUM COMPOUNDS; VERTEBRATES; 560172* - Radiation Effects- Nuclide Kinetics & ...
... from barium (Ba) carbonate. Uses of the Cs-131 purified by the method include cancer research and treatment, such as for the ... Radioisotope dispersed in a matrix for brachytherapy. US6608277. Jun 11, 2002. Aug 19, 2003. Bard Acquisition Sub. Inc.. ... in a first solution comprising an acid which reacts with the barium to form a soluble barium salt, whereby the barium and Cs- ... in a first solution comprising an acid which reacts with the barium to form a soluble barium salt, whereby the barium and Cs- ...
Barium Radioisotopes. Unstable isotopes of barium that decay or disintegrate emitting radiation. Ba atoms with atomic weights ... Barium Enema. X-RAY examination of LOWER GASTROINTESTINAL TRACT. Imaging is done while a BARIUM COMPOUND (e.g., BARIUM SULFATE ... Barium vs. BariumFerumoxsil. The purpose of this study is to determine whether Barium or BariumFerumoxsil is better for fecal ... BaB2O3F2: A New Barium Fluorooxoborate with a Unique (_"∞" ^"2" )"B2O3F-" Layer and Short Cutoff Edge.. 08:00 EDT 1st April ...
Barium X-ray : You drink a liquid (barium), which coats the esophagus, stomach, and small intestine and shows up on X-ray. This ... Radioisotope gastric-emptying scan (gastric scintigraphy): You eat food that contains a very small amount of radioisotope (a ... test is also known as an upper GI (gastrointestinal) series or a barium swallow. ...
Barium-contrast upper gastrointestinal series or gastric pH probe; radioisotope milk scan ... Barium-contrast upper gastrointestinal series or gastric pH probe; radioisotope milk scan ...
Radioisotopes; The catalytic metals; The electronic metals; Germanium; Tantalum; Caesium; Barium, beryllium, thallium and the ...
Radioisotopes and radioopaque agents include gallium, technetium, indium, strontium, iodine, barium, and phosphorus. ...
Barium enema. CT colography. Red cell radioisotope-labelled scanning. Selective angiography 17 ... Why are Barium enemas and CT colographies not as good as colonoscopy? ...
used in radioisotope thermoelectric generators (RTGs) and radioisotope heater units as an energy source for spacecraft ... Barium-133 9694 TBq/kg (262 Ci/g) 10.7 years 81.0, 356.0 ... Radioisotopes are also a method of treatment in hemopoietic ... "Radioisotopes in Industry". World Nuclear Association.. *. Martin, James (2006). Physics for Radiation Protection: A Handbook. ... most commonly used medical radioisotope, used as a radioactive tracer Iodine-129 53. 76. 15,700,000 y. β−. 194 Cosmogenic. ...
56, Ba, Barium, group=2, period=6, block=s, series=4, mass=137.327, eleneg=0.89, eleaffin=0.14462, covrad=1.98, atmrad= ... Five other radioisotopes exist. Discovered in 1863 by Reich and Richter.) e[Sn].description = ( Silvery malleable ... Some of the radioisotopes are even more toxic.) e[Ba].description = ( Silvery-white reactive element, belonging to group 2 ... Eighteen radioisotopes have been produced, but all have very short half-lives. Found only in nuclear decay waste. Pm-147 ...
Radioisotopes of refractory elements such as strontium5,6,7, barium and lanthanides were monitored only in rare occasions8. ...
Upper GI study and barium enema:. o May be of benefit when the mass involves the intestine. A 2 year old healthy male presents ... Radioisotope cholescintigraphy (HIDA) scan:. o Liver, gallbladder. • Voiding cystourethrography or intravenous urography:. o ...
Another use is as a carrier of strontium-90 radioisotope in radioisotope thermoelectric generators. Greenwood, Norman N.; ... Its optical properties are intermediate to calcium fluoride and barium fluoride. Strontium fluoride is used as an optical ...
... www.tricorderproject.org/blog/dr-jansen-or-how-i-stopped-worrying-and-learned-to-love-the-barium/ ... OpenCT, an extremely low resolution scanner using this sensor and a radioisotope source: http:// ...
Barium is sometimes used as a contrast agent; it is not absorbed orally and thus does not affect breastfeeding. ... Radioisotopes. Use of radioisotopes sometimes requires temporary weaning. The length of time will depend upon the type of ... Home ▸ Breastfeeding ▸ Can I Breastfeed if...? ▸ Illness, Surgery & Medical Procedures ▸ Use of Radioisotopes (and other ... It can be dated, frozen and used after 5+ half-lives of the radioisotope have passed (after 5 half-lives, 96.9% of the ...
Barium and radioisotopes exposure can also affect test results. The bone density in the spine and hip are the most frequently ...
Barium beefsteak meal. During this test, the patient eats a meal containing barium, allowing the radiologist to watch the ... Radioisotope gastric-emptying scan. During this test, the patient eats food containing a radioisotope, which is a slightly ... The amount of time it takes for the barium meal to be digested and leave the stomach gives the doctor an idea of how well the ... The dosage of radiation from the radioisotope is very small and not harmful, but allows the radiologist to see the food in the ...
Imaging modalities (barium studies, ultrasound, CT, MRI, radioisotope scan, ERCP, EUS, capsule endoscopy) ... This will include upper GI endoscopy, sigmoidoscopy, colonoscopy, barium studies, ultrasound, CT, MRI, radioisotope scan, ERCP ...
133Ba and 241Am were created by the neutron activation of barium and plutonium inside the bomb. The barium was present in the ... A paper on the radioisotopes left on an island by the French nuclear bombs tests of the 20th century has been printed by the ... A recent paper reports the levels of long lived radioisotopes in the trinitite. 152Eu and 154Eu was mainly formed by the ... Many atomic batteries have been of the Radioisotope thermoelectric generator (RTG) type. The Plutonium-238 used in RTGs has a ...
Barium Strontium Cobalt Ferrite Ba-Sr-Co-Fe-O bulk & research qty manufacturer. Properties, SDS, Applications, Price. Free ... Co-60, a commercially important radioisotope, is useful as a radioactive tracer and gamma ray source. The origin of the word ... 56 Ba 137.327000000 Barium See more Barium products. Barium (atomic symbol: Ba, atomic number: 56) is a Block S, Group 2, ... Barium Strontium Cobalt Ferrite Synonyms. Barium Strontium Cobalt Iron Oxide, barium-strontium-cobalt-ferrite, BSCF, Ba1−ySryCo ...
Radiochemistry includes the study of both natural and man-made radioisotopes. All radioisotopes are unstable isotopes of ... Gamma radiation requires an appreciable amount of heavy metal radiation shielding (usually lead or barium-based) to reduce its ... Radiochemistry also includes the study of the behaviour of radioisotopes in the environment; for instance, a forest or grass ... for example the action of cosmic rays on the air is responsible for the formation of radioisotopes (such as 14C and 32P), the ...
Barium Strontium Titanate (BST) Nanoparticles / Nanopowder BaO4SrTi bulk & research qty manufacturer. Properties, SDS, ... Radioactive isotopes of strontium have been used in radioisotope thermoelectric generators (RTGs) and for certain cancer ... 56 Ba 137.327000000 Barium See more Barium products. Barium (atomic symbol: Ba, atomic number: 56) is a Block S, Group 2, ... Barium Strontium Titanate (BST) Nanoparticles / Nanopowder Synonyms. Barium strontium titanium oxide, Barium strontium ...
Barium Strontium Titanate) BaSrTiO4 bulk & research qty manufacturer. Properties, SDS, Applications, Price. Free samples ... Radioactive isotopes of strontium have been used in radioisotope thermoelectric generators (RTGs) and for certain cancer ... 56 Ba 137.327000000 Barium See more Barium products. Barium (atomic symbol: Ba, atomic number: 56) is a Block S, Group 2, ... BST (Barium Strontium Titanate) Synonyms. Barium strontium titanium oxide, Barium strontium dititanate, Ba-SrTi, Ba-Srtat, Ba- ...
  • Inorganic compounds that contain barium as an integral part of the molecule. (bioportfolio.com)
  • Nonradioactive caesium compounds are only mildly toxic, but the pure metal's tendency to react explosively with water means that caesium is considered a hazardous material, and the radioisotopes present a significant health and ecological hazard in the environment. (wikipedia.org)
  • In addition to the eight toxic metals-arsenic, barium, cadmium, chromium, mercury, lead, selenium and silver-analytes included the underlying hazardous constituents (UHC) antimony, beryllium, nickel, and thallium which could not be eliminated from analysis by process knowledge. (unt.edu)
  • To their surprise, they found barium residue, a clear indication that they had instead fissioned uranium nuclei. (wikipedia.org)
  • Well-known examples are uranium and thorium, but also included are naturally occurring long-lived radioisotopes, such as potassium-40. (wikipedia.org)
  • Then, in December 1938, Otto Hahn and Fritz Strassmann at Hahn's laboratory in Berlin-Dahlem bombarded uranium with slowed neutrons, and discovered that barium had been produced, and therefore that the uranium nucleus had been split. (wikipedia.org)
  • The dosage of radiation from the radioisotope is very small and not harmful, but allows the radiologist to see the food in the stomach and how quickly it leaves the stomach, while the patient lies under a machine. (nyhq.org)
  • 2. The method according to claim 1 wherein step (b) comprises adding the first solution to a second solution comprising ammonium carbonate, under conditions of rate of addition and mixing sufficient to precipitate the barium as a solid, whereby the Cs-131 remains dissolved in the combined solution of the first and second solutions. (google.com)
  • The barium atom has a radius of 222 pm and a Van der Waals radius of 268 pm. (americanelements.com)
  • Next, the capsule is irradiated for the optimum time period, determined by the half-life of the desired radioisotope, the absorption cross section of the target atom, and the growth of possible undesired impurities. (persianblog.ir)
  • Traditionally the images produced with barium contrast are made with plain-film radiography, but computed tomography is also used in combination with barium contrast, in which case the procedure is called CT enterography . (wikipedia.org)
  • After fasting for 12 hours, you will drink a thick liquid called barium, which coats the inside of the stomach, making it show up on the x-ray. (verywellhealth.com)
  • 2005. Uncertainty of inductively coupled plasma mass spectrometry based measurements: An application to the analysis of urinary barium, cesium, antimony, and tungsten. (cdc.gov)
  • This is a study in which the patient is given small amounts of a liquid containing barium to drink with a bottle, spoon, or cup. (nyhq.org)
  • A soft, easily oxidized metallic element that ignites spontaneously in air when finely divided, used in pharmaceuticals and in radioisotope form for bone imaging. (dictionary.com)