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.
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.
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)
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.
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.
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.
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.
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)
An oral chrysotherapeutic agent for the treatment of rheumatoid arthritis. Its exact mechanism of action is unknown, but it is believed to act via immunological mechanisms and alteration of lysosomal enzyme activity. Its efficacy is slightly less than that of injected gold salts, but it is better tolerated, and side effects which occur are potentially less serious.
Plutonium. A naturally radioactive element of the actinide metals series. It has the atomic symbol Pu, atomic number 94, and atomic weight 242. Plutonium is used as a nuclear fuel, to produce radioisotopes for research, in radionuclide batteries for pacemakers, and as the agent of fission in nuclear weapons.
Radioactive substances which act as pollutants. They include chemicals whose radiation is released via radioactive waste, nuclear accidents, fallout from nuclear explosions, and the like.
Americium. A completely man-made radioactive actinide with atomic symbol Am, atomic number 95, and atomic weight 243. Its valence can range from +3 to +6. Because of its nonmagnetic ground state, it is an excellent superconductor. It is also used in bone mineral analysis and as a radiation source for radiotherapy.
Energy released by nuclear fission or nuclear fusion.
Devices containing fissionable material in sufficient quantity and so arranged as to be capable of maintaining a controlled, self-sustaining NUCLEAR FISSION chain reaction. They are also known as atomic piles, atomic reactors, fission reactors, and nuclear piles, although such names are deprecated. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A series of radioactive elements from ACTINIUM, atomic number 89, to and including LAWRENCIUM, atomic number 103.

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)

Cerium radioisotopes are radioactive isotopes of the element cerium that are used in various medical applications. These isotopes are typically produced by bombarding cerium targets with high-energy particles, such as protons or neutrons, in a nuclear reactor or particle accelerator. Cerium radioisotopes have a variety of uses in medicine, including: 1. Diagnostic imaging: Some cerium radioisotopes, such as cerium-144, are used as tracers in diagnostic imaging studies. These isotopes can be attached to molecules that are specific to certain organs or tissues in the body, allowing doctors to visualize the distribution of the tracer and diagnose various medical conditions. 2. Radiation therapy: Cerium radioisotopes can also be used in radiation therapy to treat cancer. For example, cerium-144 has been used in the treatment of bone metastases, a condition in which cancer has spread to the bones. 3. Nuclear medicine: Cerium radioisotopes can be used in nuclear medicine to treat a variety of conditions, including hyperthyroidism, thyroid cancer, and certain types of bone disease. These isotopes can be administered to the body in the form of a radioactive pill or injection, and they work by emitting radiation that destroys cancer cells or slows down the overactivity of certain organs. Overall, cerium radioisotopes play an important role in medical imaging and treatment, and they are widely used in hospitals and clinics around the world.

Cerium is a chemical element with the symbol Ce and atomic number 58. It is a soft, silvery-white metal that is rarely found in its pure form in nature. In the medical field, cerium is not commonly used as a treatment or medication. However, some studies have suggested that cerium may have potential therapeutic applications in the treatment of certain conditions, such as diabetes and cardiovascular disease. For example, cerium has been shown to have antioxidant properties and may help to reduce inflammation and oxidative stress in the body. However, more research is needed to fully understand the potential benefits and risks of using cerium in medicine.

Radioisotopes are isotopes of an element that emit radiation, such as alpha particles, beta particles, or gamma rays. In the medical field, radioisotopes are used in a variety of diagnostic and therapeutic applications. In diagnostic imaging, radioisotopes are used to create images of the body's internal structures. For example, a radioisotope such as technetium-99m can be injected into the bloodstream and then detected by a gamma camera to create an image of the heart, lungs, or other organs. This type of imaging is commonly used to diagnose conditions such as cancer, heart disease, and bone disorders. Radioisotopes are also used in therapeutic applications, such as radiation therapy for cancer. In this treatment, a radioisotope is introduced into the body, usually by injection or inhalation, and then targeted to a specific area of the body where it emits radiation that destroys cancer cells. Radioisotopes are also used in targeted radionuclide therapy, where a radioisotope is attached to a molecule that specifically targets cancer cells, allowing for more precise delivery of radiation. Overall, radioisotopes play a critical role in medical imaging and therapy, allowing for the diagnosis and treatment of a wide range of conditions.

Zinc radioisotopes are radioactive isotopes of the element zinc that are used in medical applications. These isotopes are typically produced by bombarding zinc targets with high-energy particles, such as protons or neutrons, in a nuclear reactor or particle accelerator. There are several different zinc radioisotopes that are used in medicine, including: * 67Zn: This isotope is used in positron emission tomography (PET) scans to image the brain and other organs. It is taken up by cells in the body and emits positrons, which can be detected by a PET scanner to create detailed images of the tissue. * 64Zn: This isotope is used in nuclear medicine to diagnose and treat certain types of cancer. It is taken up by cancer cells and can be used to image the tumor or to deliver radiation therapy to the cancer cells. * 70Zn: This isotope is used in research to study the metabolism and function of zinc in the body. It can be administered to animals or humans and then monitored to see how the zinc is distributed and used in the body. Zinc radioisotopes are typically administered to patients through injection or inhalation, and the amount of radiation exposure is carefully controlled to minimize any potential risks. They are an important tool in medical imaging and cancer treatment, and are used by healthcare professionals around the world.

Cerium isotopes are radioactive forms of the element cerium that are used in the medical field for various diagnostic and therapeutic purposes. Cerium-144 is a synthetic radioisotope that is used in nuclear medicine for imaging bone and soft tissue. It is produced by bombarding a target with high-energy protons, and is then used in diagnostic procedures such as bone scans to detect bone metastases, fractures, and other bone abnormalities. Cerium-144 is also used in radiation therapy for the treatment of certain types of cancer, such as prostate cancer. It is administered as a radioactive implant in the prostate gland, where it emits low-energy beta particles that destroy cancer cells while minimizing damage to surrounding healthy tissue. Cerium-144 has several advantages over other radioisotopes used in nuclear medicine, including a relatively long half-life of 182 days, low toxicity, and low energy emissions that minimize radiation exposure to patients and medical staff.

In the medical field, "Metals, Rare Earth" typically refers to a group of elements that are commonly used in medical devices and implants. These metals include titanium, stainless steel, cobalt-chromium alloys, and tantalum, among others. Rare earth metals, such as neodymium and samarium, are also used in some medical devices, such as MRI machines and dental implants. These metals are chosen for their biocompatibility, strength, and durability. They are often used in orthopedic implants, such as hip and knee replacements, dental implants, and spinal implants, as well as in cardiovascular devices, such as stents and pacemakers. However, it is important to note that some metals, such as nickel and cobalt, can cause allergic reactions in some patients. Therefore, medical professionals must carefully consider the patient's medical history and potential allergies before selecting a metal for a medical device or implant.

Auranofin is a medication that is used to treat rheumatoid arthritis. It is a gold-containing compound that works by reducing inflammation and slowing the progression of joint damage. Auranofin is usually taken orally in the form of a tablet. It is also sometimes used to treat psoriasis, a skin condition that causes red, scaly patches on the skin. Auranofin is generally well-tolerated, but it can cause side effects such as nausea, diarrhea, and an increased risk of infection. It is important to take Auranofin exactly as prescribed by your doctor, and to let your doctor know if you experience any side effects while taking this medication.

Plutonium is a radioactive element that is not naturally occurring in the environment. It is a synthetic element that is produced in nuclear reactors and is used as a fuel in nuclear weapons and as a component in nuclear power plants. In the medical field, plutonium has been studied for its potential use in cancer treatment. It has been shown to be effective in killing cancer cells, but it is also highly toxic and can cause serious health problems if not handled properly. As a result, the use of plutonium in medicine is limited and is only done in specialized research settings under strict safety protocols.

In the medical field, radioactive pollutants refer to any substances that contain radioactive isotopes and are present in the environment at levels that may pose a risk to human health. These pollutants can come from a variety of sources, including nuclear power plants, medical facilities, and the natural decay of radioactive elements in the earth. Radioactive pollutants can be inhaled or ingested, and can cause a range of health problems, including cancer, genetic mutations, and damage to the immune system. Exposure to high levels of radioactive pollutants can be particularly dangerous, as it can lead to acute radiation sickness and death. In medical settings, radioactive pollutants may be used for diagnostic and therapeutic purposes, such as in nuclear medicine and radiation therapy. However, proper handling and disposal of these substances are essential to prevent accidental exposure and minimize the risk of harm to patients and medical staff.

Americium is a radioactive element that is not commonly used in the medical field. It is a synthetic element with the atomic number 95 and the symbol Am. Americium has a half-life of about 432 years, which means that it takes that amount of time for half of the atoms of the element to decay into other elements. There are a few potential medical applications of americium, but they are not widely used. One possible use is in the treatment of certain types of cancer. Americium-241, a radioactive isotope of americium, has been used in some experimental cancer treatments, although it has not been approved for general use. Another potential use of americium in medicine is as a source of radiation for imaging studies. However, this use is also not widely used, and other types of radiation, such as X-rays and gamma rays, are more commonly used for imaging in the medical field.

Actinoid Series Elements are a group of elements in the periodic table that are located in the f-block, between actinium and lawrencium. These elements are highly radioactive and have unique chemical and physical properties. They are not commonly used in the medical field, but some of them have potential applications in nuclear medicine and radiation therapy. For example, actinium-225 is a promising isotope for targeted alpha therapy, a type of cancer treatment that uses alpha particles to destroy cancer cells. Thorium-227 is another actinoid isotope that is being studied for its potential use in cancer treatment.

There are 35 radioisotopes that have been characterized, with the most stable being 144Ce, with a half-life of 284.893 days; ... Isotopes of cerium, Cerium, Lists of isotopes by element). ... The isotopes of cerium range in atomic weight from 119 u (119Ce ... Naturally occurring cerium (58Ce) is composed of 4 stable isotopes: 136Ce, 138Ce, 140Ce, and 142Ce, with 140Ce being the most ... "Standard Atomic Weights: Cerium". CIAAW. 1995. Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04 ...
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 ... Detailed reports on the release of radioisotopes from the site were published in 1989 and 1995, with the latter report updated ... The remaining quantity of any radioisotope, and therefore the activity of that isotope, after 7 decay half-lives have passed, ...
Radioisotope thermoelectric generators use the heat of radioactive decay to produce electricity.[citation needed] SNAP-1 was a ... test platform that was never deployed, using cerium-144 in a Rankine cycle with mercury as the heat transfer fluid. Operated ... "Home". NASA Radioisotope Power Systems. Archived from the original on 7 August 2012. Retrieved 31 March 2018. "SNAP-19: Pioneer ... Deap Sea Radioisotope -Fueled Thermoelectric Generator Power Supply System. Quarterly Report No. 9, July 1, 1968 - September 30 ...
... 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 ...
... 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. ... iron radioisotopes MeSH D01.496.749.540 - krypton radioisotopes MeSH D01.496.749.560 - lead radioisotopes MeSH D01.496.749.590 ... xenon radioisotopes MeSH D01.496.749.960 - yttrium radioisotopes MeSH D01.496.749.980 - zinc radioisotopes MeSH D01.496.807.800 ...
Cette raison a engagé M. Mosander à donner au nouveau métal le nom de Lantane." (The oxide of cerium, extracted from cerite by ... Thirty-eight other radioisotopes have been synthesized. All of these isotopes have half-lives under a day (and most under a ... It is always preceded by cerium and lanthanum and usually also by neodymium. The Pr3+ ion is similar in size to the early ... This last step excludes one of the main components, cerium, whose oxide is insoluble in HNO3. Care must be taken when handling ...
In those days, the first separation was into two main groups, the cerium earths (scandium, lanthanum, cerium, praseodymium, ... Parts per million in earth's crust, e.g. Pb=13 ppm Promethium has no stable isotopes or primordial radioisotopes; trace ... 206). The structure is similar to that of fluorite or cerium dioxide (in which the cations form a face-centred cubic lattice ... The sodium double sulfates of the cerium group are poorly soluble, those of the terbium group slightly, and those of the ...
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. In Africa ... After ten half life cycles have passed over 99.96% of any radioisotope is stable. For Ru-106 this is 3,735.9 days or about 10 ... It is the most significant radioisotope left in the area around Chernobyl. Barium is formed in large amounts by the fission ...
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 ( ...
The oxides are dissolved in nitric acid that excludes one of the main components, cerium, whose oxide is insoluble in HNO3. The ... and one radioisotope, 152Gd, with the isotope 158Gd being the most abundant (24.8% natural abundance). The predicted double ... Thirty-three radioisotopes of gadolinium have been observed, with the most stable being 152Gd (naturally occurring), with a ... Using gadolinium as a dopant for materials like cerium oxide (in the form of gadolinium-doped ceria) gives an electrolyte ...
33 radioisotopes of neodymium have been detected as of 2022[update], with the most stable radioisotopes being the naturally ... Cerium is the most common rare-earth metal, followed by neodymium, and then lanthanum. The world's production of neodymium was ... Cette raison a engagé M. Mosander à donner au nouveau métal le nom de Lantane." (The oxide of cerium, extracted from cerite by ... The Nd3+ ion is similar in size to the early lanthanides of the cerium group (those from lanthanum up to samarium and europium ...
The scintillator material cerium activated lanthanum bromide (LaBr3:Ce) was first produced in 2001. LaBr3:Ce-based radiation ... LaBr3 introduces an enhanced set of capabilities to a range of gamma spectroscopy radioisotope detection and identification ...
"Cerium". price.metal.com. Shanghai Metals Market. 3 February 2020. Archived from the original on 2020-02-03. "Promethium". ... The price listing for radioisotopes is not exhaustive. 2000s commodities boom Density for 0 °C, 101.325 kPa. For individual ... Per-kilogram prices of some synthetic radioisotopes range to trillions of dollars. While the difficulty of obtaining ... 25 USD/kg cerium - 30 USD/kg praseodymium - 70 USD/kg neodymium - 30 USD/kg samarium - 80 USD/kg europium - 1600 USD/kg ...
Like cerium and praseodymium, terbium can also form a +4 oxidation state, although it is unstable in water. However, it is ... Thirty-six radioisotopes have been characterized, with the heaviest being terbium-171 (with an atomic mass of 170.95330(86) u) ... The oxides are dissolved in nitric acid that excludes one of the main components, cerium, whose oxide is insoluble in HNO3. ... fluoride or cerium(IV) fluoride. It can be obtained by reacting terbium(III) chloride or terbium(III) fluoride with fluorine ...
Cette raison a engagé M. Mosander à donner au nouveau métal le nom de Lantane." (The oxide of cerium, extracted from cerite by ... Lanthanum telluride (La3Te4) is considered to be applied in the field of radioisotope power system (nuclear power plant) due to ... In the periodic table, it appears to the right of the alkaline earth metal barium and to the left of the lanthanide cerium. ... Cerium-doped lanthanum bromide and lanthanum chloride are the recent inorganic scintillators, which have a combination of high ...
In total, 32 radioisotopes have been characterised, which range in mass number from 207 to 238. After 232Th, the most stable of ... In the periodic table, it lies to the right of actinium, to the left of protactinium, and below cerium. Pure thorium is very ... These rely on the fact that 232Th is a primordial radioisotope, but 230Th only occurs as an intermediate decay product in the ... Complete drying of the precipitate must be avoided, as air may oxidise cerium from the +3 to the +4 oxidation state, and the ...
Later 90Sr and 137Cs are the main radioisotopes, being succeeded by 99Tc. In the case of a release of radioactivity from a ... After two to three years, cerium-144/praseodymium-144, ruthenium-106/rhodium-106, and promethium-147 are responsible for the ... After about four months, cerium-141, zirconium-95/niobium-95, and strontium-89 represent the largest share of radioactive ... but a considerable number of the radioisotopes have half-lives longer than a day. The radioactivity in the fission product ...
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 ...
... -cerium and plutonium-cerium-cobalt alloys are used as nuclear fuels. Plutonium-uranium, with about 15-30 mol.% ... It is therefore used in radioisotope thermoelectric generators and radioisotope heater units such as those in the Cassini, ... Cerium is used as a chemical simulant of plutonium for development of containment, extraction, and other technologies. ... Plutonium-244 has been found in interstellar space and it has the longest half-life of any non-primordial radioisotope. The ...
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 ...
The scintillating glass fibers operate by combining 6Li and Cerium ions into the glass composition. Since 6Li has a high cross- ... portable instruments called Radioisotope Identification Devices (RIIDs). With newer high-resolution scintillators, RIIDs have ... The ionization produced is transferred to the cerium ions which results in an emission of photons with wavelength 390 to 600 nm ... The CLYC crystal uses 95% enriched 6Li and doped with cerium ions. This detector produces monoenergetic pulses above 3 MeV for ...
Space Radioisotope Power Systems Safety (Webarchive template wayback links, Articles with short description, Short description ... 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 ...
The oxides are dissolved in nitric acid that excludes one of the main components, cerium, whose oxide is insoluble in HNO3. ... To date, 39 synthetic radioisotopes of the element have been characterized, ranging in mass number from 149 to 189; the most ... Cerium-doped lutetium oxyorthosilicate is currently the preferred compound for detectors in positron emission tomography (PET ... "Evaluation of cerium doped lutetium oxyorthosilicate (LSO) scintillation crystals for PET". IEEE Transactions on Nuclear ...
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 less chemically mobile radioisotope materials. Commercial ...
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- ...
ISBN 978-0-19-515026-1. Radioisotope Power Systems Committee, National Research Council U.S. (2009). Radioisotope power systems ... The sulfate is slightly soluble, like the other cerium group sulfates. Cell parameters have been calculated for its octahydrate ... Nuclides were produced in 1941 which were not radioisotopes of neodymium or samarium, and the name "cyclonium" was proposed, ... Duggirala, Rajesh; Lal, Amit; Radhakrishnan, Shankar (2010). Radioisotope Thin-Film Powered Microsystems. Springer. p. 12. ISBN ...
It may point to Mayak's aborted attempt to manufacture a capsule of highly radioactive component cerium-144, for the SOX ... 27 December 1993 - Incident at radioisotope plant where the replacement of a filter resulted in the release into the atmosphere ... Today the plant makes tritium and radioisotopes, not plutonium.[citation needed] In recent years, proposals that the plant ... 17 July 1993 - Accident at radioisotope plant, resulting in the destruction of the absorption column and release into the ...
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 ...
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 ...
All remaining radioisotopes have half-lives that are less than 2 days, and most these have half-life less than 48 seconds. ... doi:10.1016/0022-5088(85)90294-2. Lock, J. M. (1957). "The Magnetic Susceptibilities of Lanthanum, Cerium, Praseodymium, ... The radioisotope samarium-153 is the active component of the drug samarium (153Sm) lexidronam (Quadramet), which kills cancer ... Finlay, I. G.; Mason, M. D.; Shelley, M. (2005). "Radioisotopes for the palliation of metastatic bone cancer: a systematic ...
... using cerium surrogates) using a modified sol-gel process. In 2017, he demonstrated the production of plutonium-238 dioxide sol ... Radioisotopes. *Sol-Gel. Education. *PhD in Nuclear Engineering, University of Michigan-Ann Arbor ...
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RADIOISOTOPE DIAGNOSTIC ALGORITHM FOR THE RELAPSE AND METASTASES DETECTION IN THE IODINE-NEGATIVE DIFFERENTIATED THYROID CANCER ... AIMS: The in vivo targeted diagnostic applications of biosynthetic Cerium oxide nanoparticles (CeO2-NPs), prepared by applying ... The biodistribution of CeO2-NPs were determined by directly labeled nanoparticles with Technetium-99â ¯m (99mTc) radioisotope ( ...
Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium ... Radioisotope Power Systems Committee, National Research Council U.S. (2009). Radioisotope power systems: an imperative for ... The ground state term symbol is 5I4.[12] The sulfate is slightly soluble, like the other cerium group sulfates. Cell parameters ... Promethium belongs to the cerium group of lanthanides and is chemically very similar to the neighboring elements.[8] Because of ...
ACCELERATORS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CADMIUM ISOTOPES, CERIUM ISOTOPES, CESIUM ISOTOPES, ... COUNTING TECHNIQUES, CYCLIC ACCELERATORS, CYCLOTRONS, DAYS LIVING RADIOISOTOPES, ELECTRON CAPTURE RADIOISOTOPES, EVEN-ODD ... SECONDS LIVING RADIOISOTOPES, THALLIUM ISOTOPES, YEARS LIVING RADIOISOTOPES ... 139Ce, 109Cd and 137Cs sources were prepared for a number of users of radioisotopes. A new method for determining the activity ...
Cattle ; Cerium isotopes ce-144 ; Cesium isotopes cs-137 ; Deer ; Iodine isotopes i-131 ; Manganese isotopes mn-54 ; Nevada ... Radioactive fallout--Nevada ; Dairy cattle--Nevada ; Animals ; Plants ; Radioisotopes in the body ; Tissues--Analysis ; Nevada ...
Radioisotope scanning IVP Angiogram Venogram Hysterosalpingogram 3350.0 EKG, ECG, electrocardiogram, treadmill, stress testing ... CERIUM 06165 CERUBIDINE 06170 CERUMENEX 06180 CETACAINE 06185 CETACORT 06190 CETAMIDE 06210 CETAPHIL 06215 CETAPRED 06255 CHAP ... CERIUM OXALATE 51012 CERULETIDE DIETHYLAMINE 51015 CETALKONIUM CHLORIDE 51016 CETEARETH 51017 CETEARYL OCTANOATE 51018 ...
This graph shows the total number of publications written about "Potassium Isotopes" by people in this website by year, and whether "Potassium Isotopes" was a major or minor topic of these publications ...
Cerium Radioisotopes. *Cesium Radioisotopes. *Chromium Radioisotopes. *Cobalt Radioisotopes. *Copper Radioisotopes. *Elements, ... Unstable elements with atomic numbers greater than 83 that exist in nature solely as radioisotopes. ...
Plutonium-cerium and plutonium-cerium-cobalt alloys are used as nuclear fuels.[42] ... Used on its own in radioisotope thermoelectric generators. 239Pu alpha to 235U 24100 1.9 0.022 The principal fissile isotope in ... Cerium is used as a chemical simulant of plutonium for development of containment, extraction, and other technologies.[35] ... Twenty-one plutonium radioisotopes have been characterized. The most stable are Pu-244, with a half-life of 80.8 million years ...
Cerium has a much smaller neutron absorption cross section than the other lanthanides like samarium, europium, and neodymium. ... All of the remaining radioisotopes have half-lives that are less than two days, and the majority of these have half-lives that ... Way back when, ORNL looked at overloading the salt with cerium trifluoride, then cooling the salt and causing the lanthanides ... and three extremely long-lived radioisotopes, 147Sm (1.06 × 1011y), 148Sm (7 × 1015y) and 149Sm (,2 × 1015y), with 152Sm being ...
Cerium, lanthanum, neodymium, and praseodymium, commonly in the form of a mixed oxide known as mischmetal, are used in steel ... Common Uses: Precursor in Plutonium production; used in devices for detecting high-energy (MeV) neutrons; radioisotope thermal ...
Hedrick VE, Halliday TM, Davy BM, Zoellner JM, Jahren AH. A Single-Carbon Stable Isotope Ratio Model Prediction Equation Can Estimate Self-Reported Added Sugars Intake in an Adult Population Living in Southwest Virginia. Nutrients. 2021 Oct 28; 13(11 ...
Curium isotopes can be used as a fuel in radioisotope thermoelectric generators (RTGs) to power spacecraft and other remote ... Cerium. 59. Pr. Click on the image to learn more!. Praseodymium. 60. Nd. Click on the image to learn more!. ...
Cr-50 is used for the production of the radioisotope Cr-51 which is used for measuring blood volume and red blood cell survival ...
LaBr3 introduces an enhanced set of capabilities to a range of gamma spectroscopy radioisotope detection and identification ... 3 Crystals Activated with Cerium[C]// 0.. ...
While γ rays from the decay of the former radioisotope have been observed throughout the Galaxy, 22Na remains untraceable. Its ... Oxynitrides of cerium are expected to have many useful properties but have not been synthesized so far. We identified possible ... While γ rays from the decay of the former radioisotope have been observed throughout the Galaxy, 22Na remains untraceable. Its ... "Oxynitrides of cerium are expected to have many useful properties but have not been synthesized so far. We identified possible ...
Li-7 is also used for the production of the medical research radioisotope Be-7. Li-6 is used in thermonuclear weapons and the ... Li-6 can also be used for the production of the radioisotope H-3, which is used in biochemistry research. ...
... cerium, and yttrium) [232]. Their unique luminescence and magnetic properties make them the metals of choice for the next ... Theranostics through Utilizing Cherenkov Radiation of Radioisotope Zr-89 with a Nanocomposite Combination of TiO2 and MnO2. ACS ... Radionuclide I-131 Labeled Albumin-Paclitaxel Nanoparticles for Synergistic Combined Chemo-radioisotope Therapy of Cancer. ...
INDISSOLUBLY CONVERGENT MANGLER COMMENSURABLY POSTCONTUSIONAL DROSOPHILAE BABYSAT COLLAGE PAPULAR JITTERS PRETTIED CERIUM ... FLATULENTLY FANATICALLY COLUMNATE KNEEPAN DECROWNS OUTMANEUVERS UNGUENTARY NANOWATT INTERNATIONALIZATIONS TROTTING RADIOISOTOPE ... PHOTORECEPTIVE INTRAVENOUSLY DETERMINABLE DEPRECIATIVELY OVERROASTS POMEGRANATES ANECDYSIS LOUNGY UNSAYING RADIOISOTOPES ...
Radioisotope study of fructose adsorption at the alumina/electrolyte interface. Paweł Falkowski, Mikołaj Szafran, Ewa Skwarek, ... Arsenate removal on the ion exchanger modified with cerium(III) ions. Sebastian Dudek, Dorota Kołodyńska ...
  • In this study, an effective and efficient separation method for separating praseodymium from cerium was designed, optimized, and successfully implemented. (nstri.ir)
  • Cerium, lanthanum, neodymium, and praseodymium, commonly in the form of a mixed oxide known as mischmetal, are used in steel making to remove impurities and in the production of special alloys. (knowinsiders.com)
  • In 1938, during a nuclear experiment conducted at Ohio State University , a few radioactive nuclides were produced that certainly were not radioisotopes of neodymium or samarium, but there was a lack of chemical proof that element 61 was produced, and the discovery was not generally recognized. (wikipedia.org)
  • Cr-50 is used for the production of the radioisotope Cr-51 which is used for measuring blood volume and red blood cell survival. (webelements.com)
  • Li-7 is also used for the production of the medical research radioisotope Be-7. (shef.ac.uk)
  • Li-6 can also be used for the production of the radioisotope H-3, which is used in biochemistry research. (shef.ac.uk)
  • Unstable isotopes of cerium that decay or disintegrate emitting radiation. (nih.gov)
  • Ce atoms with atomic weights 132-135, 137, 139, and 141-148 are radioactive cerium isotopes. (nih.gov)
  • K are found in all potassium, and it is the most common radioisotope in the human body. (wiki2.org)