Unstable isotopes of carbon that decay or disintegrate emitting radiation. C atoms with atomic weights 10, 11, and 14-16 are radioactive carbon isotopes.
A nonmetallic element with atomic symbol C, atomic number 6, and atomic weight [12.0096; 12.0116]. It may occur as several different allotropes including DIAMOND; CHARCOAL; and GRAPHITE; and as SOOT from incompletely burned fuel.
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.
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)
Unstable isotopes of strontium that decay or disintegrate spontaneously emitting radiation. Sr 80-83, 85, and 89-95 are radioactive strontium isotopes.
A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.
Unstable isotopes of iodine that decay or disintegrate emitting radiation. I atoms with atomic weights 117-139, except I 127, are radioactive iodine isotopes.
Hospitals maintained by a university for the teaching of medical students, postgraduate training programs, and clinical research.
Unstable isotopes of krypton that decay or disintegrate emitting radiation. Kr atoms with atomic weights 74-77, 79, 81, 85, and 87-94 are radioactive krypton isotopes.
Carbon monoxide (CO). A poisonous colorless, odorless, tasteless gas. It combines with hemoglobin to form carboxyhemoglobin, which has no oxygen carrying capacity. The resultant oxygen deprivation causes headache, dizziness, decreased pulse and respiratory rates, unconsciousness, and death. (From Merck Index, 11th ed)
Nanometer-sized tubes composed mainly of CARBON. Such nanotubes are used as probes for high-resolution structural and chemical imaging of biomolecules with ATOMIC FORCE MICROSCOPY.
Unstable isotopes of indium that decay or disintegrate emitting radiation. In atoms with atomic weights 106-112, 113m, 114, and 116-124 are radioactive indium isotopes.
Unstable isotopes of sodium that decay or disintegrate emitting radiation. Na atoms with atomic weights 20-22 and 24-26 are radioactive sodium isotopes.
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)
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.
The production of an image obtained by cameras that detect the radioactive emissions of an injected radionuclide as it has distributed differentially throughout tissues in the body. The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph.
Unstable isotopes of yttrium that decay or disintegrate emitting radiation. Y atoms with atomic weights 82-88 and 90-96 are radioactive yttrium isotopes.
Stable carbon atoms that have the same atomic number as the element carbon, but differ in atomic weight. C-13 is a stable carbon isotope.
Unstable isotopes of tin that decay or disintegrate emitting radiation. Sn atoms with atomic weights 108-111, 113, 120-121, 123 and 125-128 are tin radioisotopes.
Unstable isotopes of iron that decay or disintegrate emitting radiation. Fe atoms with atomic weights 52, 53, 55, and 59-61 are radioactive iron isotopes.
Unstable isotopes of copper that decay or disintegrate emitting radiation. Cu atoms with atomic weights 58-62, 64, and 66-68 are radioactive copper isotopes.
Unstable isotopes of phosphorus that decay or disintegrate emitting radiation. P atoms with atomic weights 28-34 except 31 are radioactive phosphorus isotopes.
High energy POSITRONS or ELECTRONS ejected from a disintegrating atomic nucleus.
The first artificially produced element and a radioactive fission product of URANIUM. Technetium has the atomic symbol Tc, atomic number 43, and atomic weight 98.91. All technetium isotopes are radioactive. Technetium 99m (m=metastable) which is the decay product of Molybdenum 99, has a half-life of about 6 hours and is used diagnostically as a radioactive imaging agent. Technetium 99 which is a decay product of technetium 99m, has a half-life of 210,000 years.
Toxic asphyxiation due to the displacement of oxygen from oxyhemoglobin by carbon monoxide.
Unstable isotopes of mercury that decay or disintegrate emitting radiation. Hg atoms with atomic weights 185-195, 197, 203, 205, and 206 are radioactive mercury isotopes.
A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in the gastrointestinal system, liver, and spleen.
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.
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.
Stable cobalt atoms that have the same atomic number as the element cobalt, but differ in atomic weight. Co-59 is a stable cobalt isotope.
Techniques for labeling a substance with a stable or radioactive isotope. It is not used for articles involving labeled substances unless the methods of labeling are substantively discussed. Tracers that may be labeled include chemical substances, cells, or microorganisms.
Hafnium. A metal element of atomic number 72 and atomic weight 178.49, symbol Hf. (From Dorland, 28th ed)
Unstable isotopes of gold that decay or disintegrate emitting radiation. Au 185-196, 198-201, and 203 are radioactive gold isotopes.
Unstable isotopes of lead that decay or disintegrate emitting radiation. Pb atoms with atomic weights 194-203, 205, and 209-214 are radioactive lead isotopes.
Any diagnostic evaluation using radioactive (unstable) isotopes. This diagnosis includes many nuclear medicine procedures as well as radioimmunoassay tests.
Stable zinc atoms that have the same atomic number as the element zinc, but differ in atomic weight. Zn-66-68, and 70 are stable zinc isotopes.
Unstable isotopes of sulfur that decay or disintegrate spontaneously emitting radiation. S 29-31, 35, 37, and 38 are radioactive sulfur isotopes.
Unstable isotopes of cadmium that decay or disintegrate emitting radiation. Cd atoms with atomic weights 103-105, 107, 109, 115, and 117-119 are radioactive cadmium isotopes.
Astatine. A radioactive halogen with the atomic symbol At, atomic number 85, and atomic weight 210. Its isotopes range in mass number from 200 to 219 and all have an extremely short half-life. Astatine may be of use in the treatment of hyperthyroidism.
Radiotherapy where cytotoxic radionuclides are linked to antibodies in order to deliver toxins directly to tumor targets. Therapy with targeted radiation rather than antibody-targeted toxins (IMMUNOTOXINS) has the advantage that adjacent tumor cells, which lack the appropriate antigenic determinants, can be destroyed by radiation cross-fire. Radioimmunotherapy is sometimes called targeted radiotherapy, but this latter term can also refer to radionuclides linked to non-immune molecules (see RADIOTHERAPY).
Lutetium. An element of the rare earth family of metals. It has the atomic symbol Lu, atomic number 71, and atomic weight 175.
Rhenium. A metal, atomic number 75, atomic weight 186.2, symbol Re. (Dorland, 28th ed)
Compounds that are used in medicine as sources of radiation for radiotherapy and for diagnostic purposes. They have numerous uses in research and industry. (Martindale, The Extra Pharmacopoeia, 30th ed, p1161)
Samarium. An element of the rare earth family of metals. It has the atomic symbol Sm, atomic number 62, and atomic weight 150.36. The oxide is used in the control rods of some nuclear reactors.
Pollutants, present in soil, which exhibit radioactivity.
A solvent for oils, fats, lacquers, varnishes, rubber waxes, and resins, and a starting material in the manufacturing of organic compounds. Poisoning by inhalation, ingestion or skin absorption is possible and may be fatal. (Merck Index, 11th ed)
Unstable isotopes of bromine that decay or disintegrate emitting radiation. Br atoms with atomic weights 74-78, 80, and 82-90 are radioactive bromine isotopes.
Detection and counting of scintillations produced in a fluorescent material by ionizing radiation.
Leakage and accumulation of CEREBROSPINAL FLUID in the subdural space which may be associated with an infectious process; CRANIOCEREBRAL TRAUMA; BRAIN NEOPLASMS; INTRACRANIAL HYPOTENSION; and other conditions.
Stable calcium atoms that have the same atomic number as the element calcium, but differ in atomic weight. Ca-42-44, 46, and 48 are stable calcium isotopes.
Liquid, solid, or gaseous waste resulting from mining of radioactive ore, production of reactor fuel materials, reactor operation, processing of irradiated reactor fuels, and related operations, and from use of radioactive materials in research, industry, and medicine. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Any of several processes for the permanent or long-term artificial or natural capture or removal and storage of carbon dioxide and other forms of carbon, through biological, chemical or physical processes, in a manner that prevents it from being released into the atmosphere.
Techniques used to determine the age of materials, based on the content and half-lives of the RADIOACTIVE ISOTOPES they contain.
Normal human serum albumin mildly iodinated with radioactive iodine (131-I) which has a half-life of 8 days, and emits beta and gamma rays. It is used as a diagnostic aid in blood volume determination. (from Merck Index, 11th ed)
Unstable isotopes of ruthenium that decay or disintegrate emitting radiation. Ru atoms with atomic weights 93-95, 97, 103, and 105-108 are radioactive ruthenium isotopes.
A colorless, flammable, poisonous liquid, CS2. It is used as a solvent, and is a counterirritant and has local anesthetic properties but is not used as such. It is highly toxic with pronounced CNS, hematologic, and dermatologic effects.
Unstable isotopes of selenium that decay or disintegrate emitting radiation. Se atoms with atomic weights 70-73, 75, 79, 81, and 83-85 are radioactive selenium isotopes.
Atomic species differing in mass number but having the same atomic number. (Grant & Hackh's Chemical Dictionary, 5th ed)
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.
Tungsten. A metallic element with the atomic symbol W, atomic number 74, and atomic weight 183.85. It is used in many manufacturing applications, including increasing the hardness, toughness, and tensile strength of steel; manufacture of filaments for incandescent light bulbs; and in contact points for automotive and electrical apparatus.
A class of organic compounds containing a ring structure made up of more than one kind of atom, usually carbon plus another atom. The ring structure can be aromatic or nonaromatic.
A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in the gastrointestinal system, cardiovascular and cerebral circulation, brain, thyroid, and joints.
A series of steps taken in order to conduct research.
Determination of the energy distribution of gamma rays emitted by nuclei. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Accumulation of a drug or chemical substance in various organs (including those not relevant to its pharmacologic or therapeutic action). This distribution depends on the blood flow or perfusion rate of the organ, the ability of the drug to penetrate organ membranes, tissue specificity, protein binding. The distribution is usually expressed as tissue to plasma ratios.
A type of high-energy radiotherapy using a beam of gamma-radiation produced by a radioisotope source encapsulated within a teletherapy unit.
An iron chelating agent with properties like EDETIC ACID. DTPA has also been used as a chelator for other metals, such as plutonium.
A specialty field of radiology concerned with diagnostic, therapeutic, and investigative use of radioactive compounds in a pharmaceutical form.
A technetium imaging agent used in renal scintigraphy, computed tomography, lung ventilation imaging, gastrointestinal scintigraphy, and many other procedures which employ radionuclide imaging agents.
The measurement of radiation by photography, as in x-ray film and film badge, by Geiger-Mueller tube, and by SCINTILLATION COUNTING.
Individuals enrolled in a school or formal educational program.
Elements of limited time intervals, contributing to particular results or situations.
Compounds that contain the triphenylmethane aniline structure found in rosaniline. Many of them have a characteristic magenta color and are used as COLORING AGENTS.
A form species of spore-producing CYANOBACTERIA, in the family Nostocaceae, order Nostocales. It is an important source of fixed NITROGEN in nutrient-depleted soils. When wet, it appears as a jelly-like mass.
Measurement of radioactivity in the entire human body.
Unstable isotopes of potassium that decay or disintegrate emitting radiation. K atoms with atomic weights 37, 38, 40, and 42-45 are radioactive potassium isotopes.
The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv).
An iodine-containing compound used in pyelography as a radiopaque medium. If labeled with radioiodine, it can be used for studies of renal function.
A class of compounds of the type R-M, where a C atom is joined directly to any other element except H, C, N, O, F, Cl, Br, I, or At. (Grant & Hackh's Chemical Dictionary, 5th ed)
An imaging technique using compounds labelled with short-lived positron-emitting radionuclides (such as carbon-11, nitrogen-13, oxygen-15 and fluorine-18) to measure cell metabolism. It has been useful in study of soft tissues such as CANCER; CARDIOVASCULAR SYSTEM; and brain. SINGLE-PHOTON EMISSION-COMPUTED TOMOGRAPHY is closely related to positron emission tomography, but uses isotopes with longer half-lives and resolution is lower.
Uptake of substances through the lining of the INTESTINES.
A cobalt-containing coordination compound produced by intestinal micro-organisms and found also in soil and water. Higher plants do not concentrate vitamin B 12 from the soil and so are a poor source of the substance as compared with animal tissues. INTRINSIC FACTOR is important for the assimilation of vitamin B 12.
The physical or physiological processes by which substances, tissue, cells, etc. take up or take in other substances or energy.
A measure of the total greenhouse gas emissions produced by an individual, organization, event, or product. It is measured in units of equivalent kilograms of CARBON DIOXIDE generated in a given time frame.
The rate dynamics in chemical or physical systems.
A diagnostic procedure used to determine whether LYMPHATIC METASTASIS has occurred. The sentinel lymph node is the first lymph node to receive drainage from a neoplasm.
Studies determining the effectiveness or value of processes, personnel, and equipment, or the material on conducting such studies. For drugs and devices, CLINICAL TRIALS AS TOPIC; DRUG EVALUATION; and DRUG EVALUATION, PRECLINICAL are available.
A gamma-emitting radionuclide imaging agent used primarily in skeletal scintigraphy. Because of its absorption by a variety of tumors, it is useful for the detection of neoplasms.
Critical and exhaustive investigation or experimentation, having for its aim the discovery of new facts and their correct interpretation, the revision of accepted conclusions, theories, or laws in the light of newly discovered facts, or the practical application of such new or revised conclusions, theories, or laws. (Webster, 3d ed)
A primary source of energy for living organisms. It is naturally occurring and is found in fruits and other parts of plants in its free state. It is used therapeutically in fluid and nutrient replacement.
A metallic element that has the atomic symbol Bi, atomic number 83 and atomic weight 208.98.
Educational institutions for individuals specializing in the field of medicine.
Antibodies produced by a single clone of cells.
Stable phosphorus atoms that have the same atomic number as the element phosphorus, but differ in atomic weight. P-31 is a stable phosphorus isotope.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
A specific protein in egg albumin that interacts with BIOTIN to render it unavailable to mammals, thereby producing biotin deficiency.
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.
The making of a radiograph of an object or tissue by recording on a photographic plate the radiation emitted by radioactive material within the object. (Dorland, 27th ed)
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
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.
Unstable isotopes of iridium that decay or disintegrate emitting radiation. Ir atoms with atomic weights 182-190, 192, and 194-198 are radioactive iridium isotopes.
An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.
An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.
A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.
Total mass of all the organisms of a given type and/or in a given area. (From Concise Dictionary of Biology, 1990) It includes the yield of vegetative mass produced from any given crop.
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
Individuals enrolled in a school of medicine or a formal educational program in medicine.
Predetermined sets of questions used to collect data - clinical data, social status, occupational group, etc. The term is often applied to a self-completed survey instrument.
The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.
Medical complexes consisting of medical school, hospitals, clinics, libraries, administrative facilities, etc.
Health services for college and university students usually provided by the educational institution.
A dark powdery deposit of unburned fuel residues, composed mainly of amorphous CARBON and some HYDROCARBONS, that accumulates in chimneys, automobile mufflers and other surfaces exposed to smoke. It is the product of incomplete combustion of carbon-rich organic fuels in low oxygen conditions. It is sometimes called lampblack or carbon black and is used in INK, in rubber tires, and to prepare CARBON NANOTUBES.
The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacologic, physiologic, or radiologic activity.
A potent, long-acting synthetic SOMATOSTATIN octapeptide analog that inhibits secretion of GROWTH HORMONE and is used to treat hormone-secreting tumors; DIABETES MELLITUS; HYPOTENSION, ORTHOSTATIC; HYPERINSULINISM; hypergastrinemia; and small bowel fistula.
The gaseous envelope surrounding a planet or similar body. (From Random House Unabridged Dictionary, 2d ed)
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
A course of study offered by an educational institution.
The total amount of radiation absorbed by tissues as a result of radiotherapy.
A metallic element of atomic number 30 and atomic weight 65.38. It is a necessary trace element in the diet, forming an essential part of many enzymes, and playing an important role in protein synthesis and in cell division. Zinc deficiency is associated with ANEMIA, short stature, HYPOGONADISM, impaired WOUND HEALING, and geophagia. It is known by the symbol Zn.
Tomography using radioactive emissions from injected RADIONUCLIDES and computer ALGORITHMS to reconstruct an image.
Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN.
A metallic element with atomic symbol Fe, atomic number 26, and atomic weight 55.85. It is an essential constituent of HEMOGLOBINS; CYTOCHROMES; and IRON-BINDING PROTEINS. It plays a role in cellular redox reactions and in the transport of OXYGEN.
Unstable isotopes of cobalt that decay or disintegrate emitting radiation. Co atoms with atomic weights of 54-64, except 59, are radioactive cobalt isotopes.
A republic in western Africa, south of NIGER between BENIN and CAMEROON. Its capital is Abuja.
Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.
Tumors or cancer located in bone tissue or specific BONES.
Elimination of ENVIRONMENTAL POLLUTANTS; PESTICIDES and other waste using living organisms, usually involving intervention of environmental or sanitation engineers.
The period of medical education in a medical school. In the United States it follows the baccalaureate degree and precedes the granting of the M.D.
A trisaccharide occurring in Australian manna (from Eucalyptus spp, Myrtaceae) and in cottonseed meal.
The movement of materials (including biochemical substances and drugs) through a biological system at the cellular level. The transport can be across cell membranes and epithelial layers. It also can occur within intracellular compartments and extracellular compartments.
Excrement from the INTESTINES, containing unabsorbed solids, waste products, secretions, and BACTERIA of the DIGESTIVE SYSTEM.
Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood.
Cellular processes in biosynthesis (anabolism) and degradation (catabolism) of CARBOHYDRATES.
Cell surface proteins that bind somatostatin and trigger intracellular changes which influence the behavior of cells. Somatostatin is a hypothalamic hormone, a pancreatic hormone, and a central and peripheral neurotransmitter. Activated somatostatin receptors on pituitary cells inhibit the release of growth hormone; those on endocrine and gastrointestinal cells regulate the absorption and utilization of nutrients; and those on neurons mediate somatostatin's role as a neurotransmitter.
The unconsolidated mineral or organic matter on the surface of the earth that serves as a natural medium for the growth of land plants.
A method of measuring the effects of a biologically active substance using an intermediate in vivo or in vitro tissue or cell model under controlled conditions. It includes virulence studies in animal fetuses in utero, mouse convulsion bioassay of insulin, quantitation of tumor-initiator systems in mouse skin, calculation of potentiating effects of a hormonal factor in an isolated strip of contracting stomach muscle, etc.
Derivatives of ACETIC ACID. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain the carboxymethane structure.
Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.
Volume of biological fluid completely cleared of drug metabolites as measured in unit time. Elimination occurs as a result of metabolic processes in the kidney, liver, saliva, sweat, intestine, heart, brain, or other site.
Red blood cells. Mature erythrocytes are non-nucleated, biconcave disks containing HEMOGLOBIN whose function is to transport OXYGEN.
Removal and examination of tissue obtained through a transdermal needle inserted into the specific region, organ, or tissue being analyzed.
Time period from 1901 through 2000 of the common era.
Use for general articles concerning medical education.
Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time.
Mutant mice homozygous for the recessive gene "nude" which fail to develop a thymus. They are useful in tumor studies and studies on immune responses.
A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image.
Transplantation between animals of different species.
An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.
An allotropic form of carbon that is used in pencils, as a lubricant, and in matches and explosives. It is obtained by mining and its dust can cause lung irritation.
Hospitals engaged in educational and research programs, as well as providing medical care to the patients.
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
Inorganic compounds that contain carbon as an integral part of the molecule but are not derived from hydrocarbons.
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.
The synthesis by organisms of organic chemical compounds, especially carbohydrates, from carbon dioxide using energy obtained from light rather than from the oxidation of chemical compounds. Photosynthesis comprises two separate processes: the light reactions and the dark reactions. In higher plants; GREEN ALGAE; and CYANOBACTERIA; NADPH and ATP formed by the light reactions drive the dark reactions which result in the fixation of carbon dioxide. (from Oxford Dictionary of Biochemistry and Molecular Biology, 2001)
The study of the origin, nature, properties, and actions of drugs and their effects on living organisms.
Body organ that filters blood for the secretion of URINE and that regulates ion concentrations.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
The chemical reactions that occur within the cells, tissues, or an organism. These processes include both the biosynthesis (ANABOLISM) and the breakdown (CATABOLISM) of organic materials utilized by the living organism.
Woody, usually tall, perennial higher plants (Angiosperms, Gymnosperms, and some Pterophyta) having usually a main stem and numerous branches.
A parliamentary democracy with a constitutional monarch in southeast Asia, consisting of 11 states (West Malaysia) on the Malay Peninsula and two states (East Malaysia) on the island of BORNEO. It is also called the Federation of Malaysia. Its capital is Kuala Lumpur. Before 1963 it was the Union of Malaya. It reorganized in 1948 as the Federation of Malaya, becoming independent from British Malaya in 1957 and becoming Malaysia in 1963 as a federation of Malaya, Sabah, Sarawak, and Singapore (which seceded in 1965). The form Malay- probably derives from the Tamil malay, mountain, with reference to its geography. (From Webster's New Geographical Dictionary, 1988, p715 & Room, Brewer's Dictionary of Names, 1992, p329)
Electric conductors through which electric currents enter or leave a medium, whether it be an electrolytic solution, solid, molten mass, gas, or vacuum.
Solutions used to store organs and minimize tissue damage, particularly while awaiting implantation.
A specialized CONNECTIVE TISSUE that is the main constituent of the SKELETON. The principle cellular component of bone is comprised of OSTEOBLASTS; OSTEOCYTES; and OSTEOCLASTS, while FIBRILLAR COLLAGENS and hydroxyapatite crystals form the BONE MATRIX.
Unstable isotopes of nitrogen that decay or disintegrate emitting radiation. N atoms with atomic weights 12, 13, 16, 17, and 18 are radioactive nitrogen isotopes.
Agents that emit light after excitation by light. The wave length of the emitted light is usually longer than that of the incident light. Fluorochromes are substances that cause fluorescence in other substances, i.e., dyes used to mark or label other compounds with fluorescent tags.
A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).
Unstable isotopes of chromium that decay or disintegrate emitting radiation. Cr atoms with atomic weights of 46-49, 51, 55, and 56 are radioactive chromium isotopes.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
The educational process of instructing.
Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).
A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)
An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.
The simplest saturated hydrocarbon. It is a colorless, flammable gas, slightly soluble in water. It is one of the chief constituents of natural gas and is formed in the decomposition of organic matter. (Grant & Hackh's Chemical Dictionary, 5th ed)
The processes by which organisms use simple inorganic substances such as gaseous or dissolved carbon dioxide and inorganic nitrogen as nutrient sources. Contrasts with heterotrophic processes which make use of organic materials as the nutrient supply source. Autotrophs can be either chemoautotrophs (or chemolithotrophs), largely ARCHAEA and BACTERIA, which also use simple inorganic substances for their metabolic energy reguirements; or photoautotrophs (or photolithotrophs), such as PLANTS and CYANOBACTERIA, which derive their energy from light. Depending on environmental conditions some organisms can switch between different nutritional modes (autotrophy; HETEROTROPHY; chemotrophy; or PHOTOTROPHY) to utilize different sources to meet their nutrient and energy requirements.
Educational institutions for individuals specializing in the field of dentistry.
Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.
The teaching staff and members of the administrative staff having academic rank in a medical school.
Individuals enrolled a school of dentistry or a formal educational program in leading to a degree in dentistry.
Unstable isotopes of calcium that decay or disintegrate emitting radiation. Ca atoms with atomic weights 39, 41, 45, 47, 49, and 50 are radioactive calcium isotopes.
Unstable isotopes of xenon that decay or disintegrate emitting radiation. Xe atoms with atomic weights 121-123, 125, 127, 133, 135, 137-145 are radioactive xenon isotopes.
Graphic tracing over a time period of radioactivity measured externally over the kidneys following intravenous injection of a radionuclide which is taken up and excreted by the kidneys.
A genus of gram-negative, aerobic, rod-shaped bacteria widely distributed in nature. Some species are pathogenic for humans, animals, and plants.
Unstable isotopes of rubidium that decay or disintegrate emitting radiation. Rb atoms with atomic weights 79-84, and 86-95 are radioactive rubidium isotopes.
Tumors or cancer of the human BREAST.
Studies beyond the bachelor's degree at an institution having graduate programs for the purpose of preparing for entrance into a specific field, and obtaining a higher degree.
One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.
The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.
Use for articles concerning dental education in general.
The assessing of academic or educational achievement. It includes all aspects of testing and test construction.
A member of the alkali group of metals. It has the atomic symbol Na, atomic number 11, and atomic weight 23.
The teaching staff and members of the administrative staff having academic rank in an educational institution.
Widely used technique which exploits the ability of complementary sequences in single-stranded DNAs or RNAs to pair with each other to form a double helix. Hybridization can take place between two complimentary DNA sequences, between a single-stranded DNA and a complementary RNA, or between two RNA sequences. The technique is used to detect and isolate specific sequences, measure homology, or define other characteristics of one or both strands. (Kendrew, Encyclopedia of Molecular Biology, 1994, p503)
A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine).
The presence of bacteria, viruses, and fungi in the soil. This term is not restricted to pathogenic organisms.
He used radioisotopes like Carbon-14 to study the mechanism of catalytic reactions. In the 1950s, Emmett's research ... In 1943, Emmett left Johns Hopkins University to become a division chief on the Manhattan Project at Columbia University under ... making the university an enticing choice for Emmett. In 1925, Emmett accepted a teaching position at Oregon State University, ... Honorary doctorate from University of Wisconsin-Milwaukee 1974 - Distinguished Service Award from Oregon State University 1976 ...
Princeton University. "Material Safety Data Sheet. Carbon-14" Archived 2013-03-12 at the Wayback Machine, University of ... "Radiation Safety Manual for Laboratory Users, Appendix B: The Characteristics of Common Radioisotopes" Archived 2013-10-02 at ... Carbon-12 and carbon-13 are both stable, while carbon-14 is unstable and has a half-life of 5,730 ± 40 years. Carbon-14 decays ... There are three naturally occurring isotopes of carbon on Earth: carbon-12, which makes up 99% of all carbon on Earth; carbon- ...
Israel's oxygen-18 facility had shut down due to the Gulf War, and the U.S. government had shut down its Isotopes of Carbon, ... The compound was first administered to two normal human volunteers by Abass Alavi in August, 1976 at the University of ... Subsequently, a "nucleophilic synthesis" was devised with the same radioisotope. As with all radioactive 18F-labeled ... Josef Pacák, Zdeněk Točík and Miloslav Černý at the Department of Organic Chemistry, Charles University, Czechoslovakia were ...
A History of Radioisotopes in Science and Medicine (University of Chicago Press, 2013) on the use of radioisotopes in science ... The X-10 reactor at Oak Ridge was used to produce radioisotopes such as cobalt-60, phosphorus-32, sulfur-35, and carbon-14. As ... 1998, President's Award for Distinguished Teaching, Princeton University "Angela N. H. Creager". Princeton University. ... Princeton University. Summers, W. C. (1 January 2003). "Review: The Life of a Virus: Tobacco Mosaic Virus as an Experimental ...
... s have also been measured in humans using the non-radioactive, carbon monoxide (CO) rebreathing technique for more ... Park, Junki; Puri, Sonika; Mattoo, Aditya; Modersitzki, Frank; Goldfarb, David (2012). "Radioisotope Blood Volume Measurement ... at the Wayback Machine at Drexel University College of Medicine. Retrieved April 2011 Reynolds, Monica; Plasma and Blood Volume ... The assessment of total hemoglobin mass by carbon monoxide rebreathing". Journal of Applied Physiology. 123 (3): 645-654. doi: ...
... the oceanic carbon dioxide cycle, trace elements, and radioisotopes. He explored and analyzed water chemistry from environments ... Edmond was born on April 27, 1943, in Glasgow, Scotland, and was educated at the University of Glasgow (BSc degree, 1965) and ... the University of California, San Diego, where he received his PhD in 1970 at the Scripps Institution of Oceanography. He was a ...
ORINS also conducted training courses in radioisotopes and established resident training programs in nuclear medicine. In the ... the Institute for Energy Analysis was a center for study of diverse issues related to carbon dioxide and global climate. In the ... University Ohio University Oklahoma State University Penn State University Purdue University Rice University Rutgers University ... Alabama A&M University Arizona State University Auburn University Augusta University Carnegie Mellon University Catholic ...
... public and private colleges and universities. The institute itself is governed by the University of Illinois board of trustees ... geologic carbon sequestration, development of geospatial tools, discovery and excavation of massive prehistoric settlements ... and monitoring atmospheric deposition of radioisotopes in North America following the Fukushima reactor incident. The institute ... University of Illinois News Bureau. Retrieved June 5, 2012. "A minute with David Gay and Chris Lehmann, National Atmospheric ...
Carbon in the form of diamond can be more expensive than rhodium. Per-kilogram prices of some synthetic radioisotopes range to ... University of British Columbia. Archived from the original on 2020-07-26. "USD / RMB". price.metal.com. Shanghai Metals Market ... Chlorine, sulfur and carbon (as coal) are cheapest by mass. Hydrogen, nitrogen, oxygen and chlorine are cheapest by volume at ... University of British Columbia. Archived (PDF) from the original on 2020-03-28. Antweiler, Werner. "Database Retrieval System ...
University of Oregon Bulletin Catalog Issue 1954-55-55 (PDF). Eugene, Oregon: University of Oregon. May 29, 1954. p. 107. ... There he conducted radioisotope research and developed radio-release methods for tracing contaminants in stream flows. Richter ... Dodge, Marcia C.; Richter, Harold G. (1991). "Chapter 3. Properties and principles of formation of carbon monoxide". U.S. EPA. ... He worked in the Department of Chemistry at the University of Oregon for several years, before working in San Francisco at the ...
Additionally, carbon-11 can also be made using a cyclotron; boron in the form of boric oxide is reacted with protons in a (p,n ... 3H (tritium), the radioisotope of hydrogen, is available at very high specific activities, and compounds with this isotope in ... Nuclear and Radiochemistry (NRC) is mostly being taught at university level, usually first at the Master- and PhD-degree level ... 14C, carbon-14 can be made (as above), and it is possible to convert the target material into simple inorganic and organic ...
... by the National Carbon Company in 1896 Neil Bartlett's demonstration of the first reaction of a noble gas at the University of ... "Production and Distribution of Radioisotopes at Oak Ridge National Laboratory". National Historic Chemical Landmarks. American ... at the University of Nebraska-Lincoln where she taught. The Keeling Curve, a record of atmospheric carbon dioxide levels ... Pfizer & Co., Inc., and E.R. Squibb & Sons Edgar Fahs Smith Memorial Collection in the history of chemistry at the University ...
At the University of Illinois at Urbana-Champaign, she was the only woman among the department's 400 members, and the first ... By 1950, Yalow had equipped a radioisotope laboratory at the Bronx VA Hospital and decided to leave teaching to finally devote ... Anderson, Mark (April 28, 2015). "Mildred Dresselhaus: The Queen of Carbon". IEEE Spectrum. Retrieved 31 August 2018. Howes, ... She received this offer partially because World War II had just begun and many men went off to fight, and the University opted ...
Princeton University Press, ISBN 978-0-691-14354-5. - (2016), A Geochemist in his Garden of Eden (PDF), Eldigio Press. Carbon ... including oceanic mixing based on stable and radioisotope distribution. This includes research on the biogeochemical cycles of ... Oxford University, Pennsylvania State University, Harvard University, and Southern Methodist University, among others. On May ... Arizona State University Lamont-Doherty Earth Observatory - The Earth Institute - Columbia University Archived August 3, 2013, ...
International Institute for Carbon-Neutral Energy Research (I²CNER)[8][edit]. Director: Prof. Petros Sofronis ... Radioisotope Center. *Center for Advanced Instrumental Analysis. *The International Student Center. *The Kyushu University ... Kyushu University is one of the seven former Imperial Universities created in the Meiji period. The university is the largest ... It is also the 18th best university in Asia, according to QS Asian University rankings.[27]. In QS World University Rankings ...
Labeled with the radioisotope carbon-11, it can be used for positron emission tomography. Zheng LT, Hwang J, Ock J, Lee MG, Lee ... Roth, BL; Driscol, J (12 January 2011). "PDSP Ki Database". Psychoactive Drug Screening Program (PDSP). University of North ...
... greatest minimum residence time in the soil based on 14C radioisotope dating, and contained carbon most recalcitrant to ... David Alan Laird is a professor at Iowa State University, Department of Agronomy, Ames, Iowa. Throughout his career as a soil ... Distinguishing black carbon from biogenic humic substances in soil clay fractions. Geoderma 143: 115-122 Fidel, R.B., Laird, D. ... Carbon sequestration in clay mineral fractions from 14C-labeled plant residues. Soil Science Society of America Journal 67, ...
It is a parent radioisotope to the short-lived gamma-emitting daughter radioisotope technetium-99m, a nuclear isomer used in ... Oxford: Oxford University Press. pp. 262-266. ISBN 978-0-19-850341-5. Parish, R. V. (1977). The Metallic Elements. New York: ... The oxidation state 0 is possible with carbon monoxide as ligand, such as in molybdenum hexacarbonyl, Mo(CO)6. Molybdenite-the ... Of the synthetic radioisotopes, the most stable is 93Mo, with a half-life of 4,000 years. The most common isotopic molybdenum ...
"Uranium Fission in a Bulk of Carbon and Uranium Oxide". In 1943, he took a leave of absence from Queen's University to join the ... he discovered the relationship between the radioactive disintegration constants of beta particle-emitting radioisotopes and ... In 1951, Sargent left the Chalk River Laboratories to return to Queen's University as the head of its physics department and, ... He was awarded a Prince of Wales Entrance Scholarship and a Carter Scholarship, and entered Queen's University, where he earned ...
Harvard University Press, Cambridge, MA. Crawford, M. and Wilson, R. (1996) "Low-Dose Linearity: The Rule of the Exception?" in ... and carbon capture and storage. At Areva, as a member of the Executive Operations Committee since early 2011, Crawford manages ... a subsidiary of Areva producing radioisotopes that target specific types of cancer. The Areva Foundation, a charitable ... Born in Tucson, Arizona, she grew up on a ranch north of Tucson and attended University High School, a public school for the ...
"So we got this rigged up," Tuohy recounted, "and we had this poor little tube of carbon dioxide and I had absolutely no hope it ... In 1968 a paper was published in the journal Nature, on a study of radioisotopes found in oysters from the Irish Sea, using ... Oxford: Oxford University Press. ISBN 978-0-19-870202-3. OCLC 900506637. Cathcart, Brian (1995). Test of Greatness: Britain's ... The new gas-cooled Calder Hall reactors on the site had just received a delivery of 25 tonnes of liquid carbon dioxide and this ...
Radium has been replaced by much cheaper cobalt-60 and other radioisotopes in radiation treatment. Noncorroding lead as a cable ... Global geochemical cycles critical for life Nitrogen Cycle Water Cycle Carbon Cycle Oxygen Cycle Bioeconomics C. Arden Pope ... "The Future of the Mineral Industry" University of Minnesota, Minneapolis, Dept. of Mining Engineering, 1968, 15 p. U.S. ... Synthetic graphite, is made in large quantities (graphite electrodes, graphite fiber) from carbon precursors such as petroleum ...
Keck Carbon Cycle Accelerator Mass Spectrometry (KCCAMS) Facility at the University of California, Irvine Xceleron, Inc in ... Russia National Taiwan University, Department of Geosciences, Taipei, Taiwan, R.O.C Accelerator Unit for Radioisotope Studies ( ... The Pennsylvania State University, University Park, State College, Pennsylvania Inter University Accelerator Centre (IUAC), New ... INNOVA and 2nd University of Naples, Italy Oxford Radiocarbon Accelerator Unit, University of Oxford, United Kingdom POZNAN ...
It is therefore used in radioisotope thermoelectric generators and radioisotope heater units such as those in the Cassini, ... It reacts with carbon, halogens, nitrogen, silicon, and hydrogen. When exposed to moist air, it forms oxides and hydrides that ... Oxford University Press. ISBN 978-0-19-923021-1. Till, C. E.; Chang, Y. I. (2011). Plentiful Energy: The Story of the Integral ... Oxford (UK): Oxford University Press. ISBN 0-19-850340-7.CS1 maint: ref duplicates default (link) Gosling, F. G. (1999). The ...
Some of the well-known naturally-occurring radioisotopes are tritium, carbon-14, and phosphorus-32. The timing of their ... Ray Isotope Spectrometer[permanent dead link] University of Leeds paper[permanent dead link], proceedings of the 26th ICRC.( ... In addition to the above light elements, tritium and isotopes of aluminium, carbon (carbon-14), phosphorus (phosphorus-32), ... Starrfield, Sumner (27 May 2020). "Carbon-Oxygen Classical Novae Are Galactic 7Li Producers as well as Potential Supernova Ia ...
Hutchinson earned his degree in Zoology from Cambridge University but chose not to earn a doctorate, of which he came to be ... Hutchinson is also recognized as being the first to use radioisotopes as tracers in field experiments. In doing so he along ... He taught his students as early as 1947 that the increase in atmospheric carbon dioxide would lead to a global temperature ... In 1926 he applied for a lectureship at the University of Witwatersrand in Johannesburg. He lectured for two years before he ...
Synthesis and characterization of single-wall and double-wall carbon nanotubes Opal suwannamek - Professor at the King ... on North Africa Academic Computing and Communications Center Research Facility Center for Science and Technology Radioisotope ... "Selection for the FY 2014 Top Global University Project" (PDF). MEXT. "University of Tsukuba Top Global University Project". ... University and selected as a Top Type university of Top Global University Project by the Japanese government The university has ...
"Moving-wire device for carbon isotopic analyses of nanogram quantities of nonvolatile organic carbon". Analytical Chemistry. 77 ... Cambridge University Press. Hinton, R.W. and Long, J.V.P. (1979). High resolution ion microprobe measurement of lead isotopes: ... For example, the decay rate of the radioisotope 14C is widely used to date organic materials, but this approach was once ... For example, carbon isotope ratios are measured relative to the international standard for C. The C standard is produced from a ...
Saruhsashi went back to school to get her PhD in chemistry at the University of Tokyo in 1957, where she was be the first woman ... She also made important contributions to the study of the carbon dioxide system in the oceans, finding that the Pacific Ocean ... Given these results, Saruhashi and Miyake concluded that the differing quantities of artificial radioisotopes found in the ... Previous to their study, it was believed that the high values of carbon dioxide and alkalinity present in the oceans resulted ...
Ter-Pogossian MM., University Park Press: Baltimore, 1975. *^ "PET Scan: PET/CT History". Petscaninfo.com. Archived from the ... Radionuclides used in PET scanning are typically isotopes with short half-lives[3] such as carbon-11 (~20 min), nitrogen-13 (~ ... As the radioisotope undergoes positron emission decay (also known as positive beta decay), it emits a positron, an antiparticle ... "University of Pennsylvania. June 15, 2006. Archived from the original on June 28, 2006. Retrieved February 22, 2010.. ...
Iowa State University. Retrieved 27 April 2013.. *^ Karlsson EB (9 February 2000). "The Nobel Prizes in Physics 1901-2000". ... The difference between soft and hard body parts stems mostly from the fact that carbon has a very low X-ray cross section ... Radioisotope renography. *Sestamibi parathyroid scintigraphy. *Radioactive iodine uptake test. *Bone scintigraphy. * ... Video on X-ray inspection and industrial computed tomography, Karlsruhe University of Applied Sciences ...
Reaction with carbon Lithium is the only metal that reacts directly with carbon to give dilithium acetylide. Na and K can react ... "University of Alberta. University of Alberta. 1999-2013. Retrieved 24 June 2013.. ... Radioisotopes of caesium require special precautions: the improper handling of caesium-137 gamma ray sources can lead to ... They also react with carbon dioxide and carbon tetrachloride, so that normal fire extinguishers are counterproductive when used ...
University of California Press.. *^ "What are cosmic rays?" (PDF). Michigan State University National Superconducting Cyclotron ... such as carbon-14, via the reaction: n + 14N → p + 14C. Cosmic rays kept the level of carbon-14[81] in the atmosphere roughly ... Mainly from radioisotopes in food (40K, 14C, etc.) (b)depends on diet. ... Georgia State University. Retrieved 17 February 2013.. *^ Malley, Marjorie C. (25 August 2011), Radioactivity: A History of a ...
Cambridge University Press. ISBN 978-1-107-04586-6 *^ Paton, Richard. "Calibration and Standards in Flow Measurement" (PDF). ... tracer methods may be used to deduce the flow rate from the change in concentration of a dye or radioisotope. ... Carbon dioxide sensor. *Carbon monoxide detector. *Catalytic bead sensor. *Chemical field-effect transistor ... of Civil Engineering, The University of Queensland, Brisbane, Australia, Dec., pp. 49-66. ISBN 978-1-86499-928-0. . Archived ...
A major use of systemic radioisotope therapy is in the treatment of bone metastasis from cancer. The radioisotopes travel ... Oxford [Oxfordshire]: Oxford University Press. ISBN 0-19-963315-0.. External links[edit]. Wikibooks has a book on the topic of ... Charged particles such as protons and boron, carbon, and neon ions can cause direct damage to cancer cell DNA through high-LET ... Systemic radioisotope therapy (RIT) is a form of targeted therapy. Targeting can be due to the chemical properties of the ...
"University of Texas at Austin. University of Texas. 28 February 2017. Retrieved 15 March 2017. ...first all-solid-state battery ... lithium-carbon fluoride). Li-(CF)n. Li. (CF)n. 3.6. 3.0. 120 ... Radioisotope thermoelectric generator. *Solar power * ... A common dry cell is the zinc-carbon battery, sometimes called the dry Leclanché cell, with a nominal voltage of 1.5 volts, the ... Alkaline and zinc-carbon cells have different chemistries, but approximately the same emf of 1.5 volts; likewise NiCd and NiMH ...
Guide to the Elements - Revised Edition, Albert Stwertka, (Oxford University Press; 1998) ISBN 0-19-508083-1 ... 27 radioisotopes have been observed, with the most stable ones being 169Yb with a half-life of 32.0 days, 175Yb with a half- ... Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon ...
"History of Carbon and Carbon Materials - Center for Applied Energy Research - University of Kentucky". Caer.uky.edu. Archived ... Marinsky, J. A.; Glendenin, L. E.; Coryell, C. D. (1947). "The chemical identification of radioisotopes of neodymium and of ... Oxford University Press. ISBN 9780198503415. . Retrieved 28 February 2018.. *^ Healy, John F. (1999). Pliny the Elder on ... Carbon 3750 BC 2500 BC Egyptians and Sumerians Middle East The earliest known use of charcoal was for the reduction of copper, ...
Lettington, Alan H. (1998). "Applications of diamond-like carbon thin films". Carbon. 36 (5-6): 555-560. doi:10.1016/S0008-6223 ... While most of germanium's radioisotopes decay by beta decay, 61. Ge. and 64. Ge. decay by β+. delayed proton emission.[46] 84. ... Department of Materials Science and Engineering, University of California, Berkeley, and Materials Sciences Division, Lawrence ... At least 27 radioisotopes have also been synthesized, ranging in atomic mass from 58 to 89. The most stable of these is 68. Ge ...
Oxford University Press. p. 231. ISBN 978-0-19-518295-8.. *^ Robinson, Matthew B & Scherlen, Renee G (2007). Lies, damned lies ... and it has been called a carbon negative raw material.[61][62] Results indicate that high yield of hemp may require high total ... by way of a process which is known as phytoremediation-the process of clearing radioisotopes and a variety of other toxins from ... "Oregon State University. Retrieved May 15, 2016.. *^ Gabriel G. Nahas (31 December 1992). Cannabis Physiopathology Epidemiology ...
Saint John's University. Retrieved January 28, 2008.. *^ a b c d Weiss, H. M. (2008). "Appreciating Oxygen". J. Chem. Educ. 85 ... Fourteen radioisotopes have been characterized. The most stable are 15O with a half-life of 122.24 seconds and 14O with a half- ... 2 concentration in the lungs helps to displace carbon monoxide from the heme group of hemoglobin.[92][93] Oxygen gas is ... 17 (11th ed.). Cambridge University Press. pp. 938-939.. *^ a b World of Chemistry contributors (2005). "John Mayow". World of ...
Harvard University Radiation Protection Office Providing radiation guidance to Harvard University and affiliated institutions. ... injection of medical radioisotopes such as technetium-99m. The occupational hazards from airborne radioactive particles in ... carbon and hydrogen respectively. ... meter in use for surface dose rate on one of three radioisotope ... Dudley of Vanderbilt University performed an experiment involving x-raying Dudley's head that resulted in his hair loss. A ...
Cambridge University Press. ISBN 978-0-521-47128-2. .. *^ 1929-, Chen, Francis F. (1984). Introduction to plasma physics and ... "Tunable synthesis and in situ growth of silicon-carbon mesostructures using impermeable plasma". Scientific Reports. 3: 1083. ... Multi-Mission Radioisotope Thermoelectric Generator. *Accidents and incidents. *Policy. *Fusion. *Radioisotope thermoelectric ( ... Cambridge University Press. ISBN 978-0-521-44810-9. .. *^ Chu, P.K.; Lu, XinPel (2013). Low Temperature Plasma Technology: ...
... was discovered on February 27, 1940, by Martin Kamen and Sam Ruben at the University of California Radiation ... "Radiation Safety Manual for Laboratory Users, Appendix B: The Characteristics of Common Radioisotopes" Archived 2013-10-02 at ... Carbon-14 is an isotope of carbon Heavier: carbon-15 Decay product of: boron-14, nitrogen-18 Decay chain of carbon-14 Decays to ... Carbon-12 and carbon-13 are both stable, while carbon-14 is unstable and has a half-life of 5,730 ± 40 years.[3] Carbon-14 ...
Oxford University Press. p. 73. ISBN 978-0-19-938334-4. .. *^ Ryabchikov, D. I.; Gol'braikh, E. K. (2013). The Analytical ... Thirty radioisotopes have been characterised, which range in mass number from 209[22] to 238.[20] After 232Th, the most stable ... carbon arc lamps, heat-resistant crucibles, and as catalysts for industrial chemical reactions such as the oxidation of ammonia ... "Oak Ridge Associated Universities. 1999. Retrieved 29 September 2017.. *^ Rancourt, J.D. (1996). Optical Thin Films. User ...
1-3, Cambridge University Press, 1985 ISBN 0-521-31391-0. *^ Richard C. Jaeger, Travis N. Blalock, Microelectronic circuit ... Hojjati, B.; Battles, S., The Growth in Electricity Demand in U.S. Households, 1981-2001: Implications for Carbon Emissions ( ... Carbon Sequestration Leadership Forum, An Energy Summary of India, archived from the original on 2007-12-05, retrieved 2007-12- ... Morris, Simon C. (2003), Life's Solution: Inevitable Humans in a Lonely Universe, Cambridge University Press, pp. 182-85, ISBN ...
Berkeley: University of California Press. p. 131.. *^ von Glahn, Richard (1996). "Myth and Reality of China's Seventeenth ... Twenty-eight radioisotopes have been characterized, the most stable being 105Ag with a half-life of 41.29 days, 111Ag with a ... although the thermal conductivity of carbon (in the diamond allotrope) and superfluid helium-4 are even higher.[7] The ... Edinburgh: Edinburgh University Press. p. 223 *^ Bayley, J., Crossley, D. and Ponting, M. (eds). 2008. "Metals and Metalworking ...
Kyoto University Bioinformatics Center. Retrieved 11 December 2013. Ou Z, Shi X, Gilroy RK, Kirisci L, Romkes M, Lynch C, Wang ... This assertion was validated by Rudolf Schoenheimer's work with radioisotopes as tracers in 1937. This in turn would pave the ... EC 2.6 previously included amidinotransferase but it has since been reclassified as a subcategory of EC 2.1 (single-carbon ... Colorado State University. Retrieved 10 November 2013. Kumar B, Singh-Pareek SL, Sopory SK (2008). "Chapter 23: Glutathione ...
"Iowa State University Digital Repository. Iowa State University. Bibcode:1972PhDT........54L. Retrieved 4 November 2018.. ... Chromium is extremely hard, and is the third hardest element behind carbon (diamond) and boron. Its Mohs hardness is 8.5, which ... 19 radioisotopes have been characterized, with the most stable being 50Cr with a half-life of (more than) 1.8×1017 years, and ... "Iowa State University Digital Repository. Iowa State University. Bibcode:1969PhDT.......118B. Retrieved 4 November 2018.. ...
204Tl is the most stable radioisotope, with a half-life of 3.78 years.[12] It is made by the neutron activation of stable ... Oxford University Press. pp. 326-327. ISBN 978-0-19-280600-0.. ... Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium ... The radioisotope thallium-201 (as the soluble chloride TlCl) is used in small, nontoxic amounts as an agent in a nuclear ... "Manual for reactor produced radioisotopes" (PDF). International Atomic Energy Agency. 2003. Retrieved 2010-05-13.. ...
A major use of systemic radioisotope therapy is in the treatment of bone metastasis from cancer. The radioisotopes travel ... Oxford University Press. p. 173. ISBN 9780191065101. .. *^ Darby S, McGale P, Correa C, Taylor C, Arriagada R, Clarke M, et al ... Charged particles such as protons and boron, carbon, and neon ions can cause direct damage to cancer cell DNA through high-LET ... systemic radioisotope therapy or unsealed source radiotherapy.. The differences relate to the position of the radiation source ...
University Science Books. ISBN 0-935702-05-9.. *. Shu, F.H. (1991). The Physics of Astrophysics (engelsk). University Science ... 2013). «182Hf-182W age dating of a 26Al-poor inclusion and implications for the origin of short-lived radioisotopes in the ... Kasting, J.F.; Ackerman, T.P. (1986). «Climatic Consequences of Very High Carbon Dioxide Levels in the Earth's Early Atmosphere ... University of St Andrews. Besøkt 29. april 2012.. *^ «The Distortion of the Heliosphere: Our Interstellar Magnetic Compass» ( ...
Among others, the University of Houston TPV Radioisotope Power Conversion Technology development effort is attempting to ... Carbon nanotubes in photovoltaics. *Dye-sensitized solar cell. *Cadmium telluride photovoltaics. *Copper indium gallium ... A TPV radioisotope converter with 20% efficiency was demonstrated that uses a tungsten emitter heated to 1350 K, with tandem ... NASA Radioisotope Power Conversion Technology NRA Overview. *New thermophotovoltaic materials could replace alternators in cars ...
"Harvard University. Retrieved 2009-03-23.. *^ a b c d "Survey of Energy Resources 2007 Uranium - Resources". World Energy ... uranium and thorium radioisotopes naturally found in coal and concentrated in heavy/bottom coal ash and airborne fly ash.[103] ... and concluded that nuclear power produced 3.3 g/kWh of carbon dioxide, compared to 400.0 for natural gas and 700.0 for coal.[32 ... Herring, J.: Uranium and Thorium Resource Assessment, Encyclopedia of Energy, Boston University, Boston, 2004, ISBN 0-12-176480 ...
University of New Mexico Press.. *^ James Kasting (2010). How to Find a Habitable Planet. Princeton University Press. p. 127. ... Various elements, such as iron, magnesium, titanium, carbon, oxygen, silicon, and others, are required to produce habitable ... Even on a habitable planet with enough radioisotopes to heat its interior, various prebiotic molecules are required in order to ... in collaboration with Guillermo Gonzalez of the University of Washington.[15][16] In that paper, Gonzalez, Brownlee, and Ward ...
"Technical University of Denmark. Retrieved 19 May 2015.. *^ "Dihydrogen". O=CHem Directory. University of Southern Maine. ... One of the many complications to this highly optimized technology is the formation of coke or carbon: CH. 4 → C + 2 H. 2. ... is also sometimes considered as a light radioisotope of hydrogen, due to the mass difference between the antimuon and the ... Cambridge University Press. ISBN 978-0-521-82381-4.. *^ NAAP Labs (2009). "Energy Levels". University of Nebraska Lincoln. ...
... allowing the use of radioisotope rubidium-82 in nuclear medicine to locate and image brain tumors.[50] Rubidium-82 has a very ... Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon ... Rubidium at The Periodic Table of Videos (University of Nottingham). *v. *t ...
a b Walker, J. Samuel (2004). Three Mile Island: A Nuclear Crisis in Historical Perspective (Berkeley: University of California ... This was due to outgassing by an uncontrolled system that, today, would have been backfitted with activated carbon and HEPA ... Subsequent failures can permit these radioisotopes to breach further layers of containment. Superheated steam and hot metal ... By virtue of the relatively inert coolant (carbon dioxide), the large volume and high pressure of the coolant, and the ...
A major use of systemic radioisotope therapy is in the treatment of bone metastasis from cancer. The radioisotopes travel ... Oxford [Oxfordshire]: Oxford University Press. ISBN 978-0-19-963315-9. .. External links[edit]. Wikibooks has a book on the ... Charged particles such as protons and boron, carbon, and neon ions can cause direct damage to cancer cell DNA through high-LET ... Oxford University Press. p. 173. ISBN 9780191065101. .. *^ Darby S, McGale P, Correa C, Taylor C, Arriagada R, Clarke M, et al ...
Shields, M.R., Bianchi,T.S., Mohrig, D.,Hutchings, J., Kenny, W.F., Kolker, A.S., Curtis, J.H., (2017). Carbon storage in the ... Radioisotope geochemistry.. *Coastal biogeochemistry.. Publications. ... Ph.D., Stony Brook University, State University of New York, 2005. M.A., Stony Brook University, State University of New York, ... Cambridge University Press. Bianchi, T.S., Wysocki, L.A., Schreiner, K.M, Filley, T.R., Corbett, D.R., Kolker, A.S. (2011). ...
Princeton University. "Material Safety Data Sheet. Carbon-14" Archived 2013-03-12 at the Wayback Machine, University of ... "Radiation Safety Manual for Laboratory Users, Appendix B: The Characteristics of Common Radioisotopes" Archived 2013-10-02 at ... Carbon-12 and carbon-13 are both stable, while carbon-14 is unstable and has a half-life of 5,730 ± 40 years. Carbon-14 decays ... There are three naturally occurring isotopes of carbon on Earth: carbon-12, which makes up 99% of all carbon on Earth; carbon- ...
ProjectMentorAnnaRose AdamsOregon State University, Corvallis, OregonBioresource Research/ CSSTitle: Influence of Anthropogenic ... The bioavailability of Fe, and therefore the productivity of the Oregon upwelling system results in a potential for carbon ... Title: Flood Deposition on the Eel Margin, California: Evidence From X-Radiography and Radioisotopes ... Humboldt State University - Arcata, CA. Botany. Title: Temporal and Spatial Variations in Species Composition and Toxicity of ...
... the absorbed radioisotope decays naturally according to the carbons half-life. By measuring the amount of carbon-14 in organic ... who is deputy director of the Research Laboratory for Archaeology and the History of Art at the University of Oxford, United ... The research, published in the journal Science1, measured radioactive carbon isotopes in 211 samples collected from museums ... Plants absorb the naturally occurring radioactive carbon-14 isotope during photosynthesis. After they die, ...
He used radioisotopes like Carbon-14 to study the mechanism of catalytic reactions. In the 1950s, Emmetts research ... In 1943, Emmett left Johns Hopkins University to become a division chief on the Manhattan Project at Columbia University under ... making the university an enticing choice for Emmett. In 1925, Emmett accepted a teaching position at Oregon State University, ... Honorary doctorate from University of Wisconsin-Milwaukee 1974 - Distinguished Service Award from Oregon State University 1976 ...
The radioisotope has a half-life of 66 hours; therefore, clinicians have about three days to use the radioisotope before it is ... The MU Research Reactor has been a crucial component to research at the university for more than 40 years. Operating 6.5 days a ... but also to carbon date artifacts, improve medical diagnostic tools and prevent illness. ... Copyright © 2019 - Curators of the University of Missouri. All rights reserved. DMCA and other copyright information. An equal ...
While waiting to be called to pre-flight training, I enrolled at the Pennsylvania State University to study biochemistry. After ... carbon and/or heavy nitrogen atoms could be tracked during their conversion from foodstuffs to cellular materials. That seemed ... radioisotopes as tracers for the study of intermediary metabolism. Particularly fascinating were a succession of papers from ... I returned to the university in the fall of 1946 and completed my undergraduate degree in biochemistry two years later. ...
University of Tsukuba for their generous help with the radioisotope experiments. We also thank Mr. Y. Watanabe (Univ. of ... Low Carbon Flux into β-glucan Is a Feature of Carbon Metabolism in E. huxleyi. Carbon metabolism in the haptophyte alga E. ... Alkenones Carbon partitioning Carbon storage compound Emiliania huxleyi Haptophyte Lipid biosynthesis Electronic supplementary ... However, due to the complexity of the fate of fixed carbon, no quantitative analysis of carbon flux into these compounds in E. ...
By measuring the ratio of the radio isotope to non-radioactive carbon, the amount of carbon-14 decay can be worked out, thereby ... a geochronologist at the University of Oxford, UK, who led the latest work, published today in Science. Various geologic, ... As a rule, carbon dates are younger than calendar dates: a bone carbon-dated to 10,000 years is around 11,000 years old, and ... Carbon dating is used to work out the age of organic material - in effect, any living thing. The technique hinges on carbon-14 ...
Advanced Proteomics program and Advanced Carbon Nanotechnology Program at Vanderbilt University. These important research ... 1.3 million for the continued development of DETECTIVE High Purity Germanium (HPGe) radio-isotope identification technology. ... Tennessee State University is part of a university led consortium to advance materials and sensor technology development for ... 1 million for the Center for Optical Logic Devices (COLD) at Fisk University, to explore complex logic and implement new logic ...
These samples were returned to the University of California, Santa Barbara, and analyzed for carbon, nitrogen and phosphorus as ... dpm: disintegrations per minute, the decay rate of the radio isotope. Column Heading. Units/format. Description. ... Carbon_SD. mol/mg dry weight. Standard deviation of carbon value. 5 Nitrogen. mol/mg dry weight. Surficial particulate nitrogen ... Site,Year,Carbon,Carbon_SD,Nitrogen,Nitrogen_SD,Phosphorus,Phosphorus_SD. 1,1982,12.6,-999,0.84,-999,0.027,-999 1,1984,12.5,0.1 ...
In view of the profound significance of these AMS 14C measurements, the ICR Radioisotopes and the Age of the Earth (RATE) team ... Department of Energy Coal Sample Bank maintained at the Pennsylvania State University. The ten samples include three coals from ... Percent Modern Carbon. Some readers at this point may be asking, how does one then account for the tens of millions and ... Download Carbon Dating Undercuts Evolutions Long Ages PDF. Evolutionists generally feel secure even in the face of compelling ...
During the Radioisotopes and the Age of the Earth (RATE) project, Andrew Snelling discovered evidence for a young earth and ... Department of Energy Coal Sample Bank maintained at the Pennsylvania State University. The ten samples include three coals from ... Percent Modern Carbon. Some readers at this point may be asking, how does one then account for the tens of millions and ... Download Carbon Dating Undercuts Evolutions Long Ages PDF. Evolutionists generally feel secure even in the face of compelling ...
Isotopic Tracers; Radioisotopes. Stable and radioactive isotopes such as oxygen, hydrogen, carbon, nitrogen and sulfur have ... and soil and wetland chronology for rates of carbon turnover, in collaboration with WSC, NAWQA, GD projects and university ... Biogeochemistry of Soils: Carbon/Water/Rock Interaction in the Critical Zone. show details View Publications. Carbon Cycling ... Biogeochemistry of Carbon and Nitrogen in Aquatic Environments. show details View Publications. Carbon Cycling and ...
Radio isotope analysis of carbon in atmospheric CO2 shows that the increasing CO2 concentrations come from fossil fuel origins ... The team from University College London argued that the results provided the first definitive proof that the overall volume of ... "The Carbon Cycle and Atmospheric Carbon Dioxide," Climate Change 2001: Working Group I: The Scientific Basis. Posted by United ... C.D. Keeling and T.P. Whorf, Atmospheric carbon dioxide record from Mauna Loa (1958-2004), Carbon Dioxide Research Information ...
d Endocrinology & Metabolism Research Center, Tehran University of Medical Sciences, Tehran, Iran. e Baqiatallah University of ... Effects of carbon tetrachloride and Liv.52 on the clearance rate of 131I-Rose Bengal in rat liver (pdf). Dhawan, D., Goel, A., ... Rajagopal, K.R., Radio-Isotope Department, Barnard Institute of Radiology, Government General Hospital, Madras, Tamil Nadu, ... Effect of carbon tetrachloride and Liv.52 on liver microsomal protein, total protein and nucleic acids (pdf). Subbarao, V.V. ...
The first radioisotope produced and shipped from a reactor - the Graphite Reactor - was carbon-14. It was sent in 1946 to a ... Universities using accelerators had produced only micrograms of plutonium. (A microgram is a thousandth of a milligram. One ... Rupp, a chemical engineer trained at Purdue University where he was once president of the poetry club, noted New York Citys ... Researchers created other radioisotopes, such as radioactive phosphorus, by immersing a nonradioactive target material, such as ...
Carbon-14 . Libbys radiocarbon dating method is based on carbon-14, the radioisotope discovered by Martin D. Kamen and Samuel ... Libby received honorary degrees from Wesleyan University (1955), Syracuse University (1957), the University of Dublins Trinity ... Libby believed that traces of carbon-14 should always occur in atmospheric carbon dioxide (CO2) and that because carbon dioxide ... New York: Oxford University Press, 1994.. Ruben, Samuel, and Michael D. Kamen. "Radioactive Carbon of Long Half-Life." Physical ...
According to radio-isotope analysis the oldest eggs were laid 700 years ago. Improbably, it was possible to hatch the eggs and ... Barely perturbing the natural environment, FACE will study the long-term effect of elevated carbon dioxide on mature oak trees ... University develops Tricorder to improve food safety. In 2011, an outbreak of Escherichia coli (E.Coli) disease in Germany ... Now, a team of Scientists from the University of Birmingham is leading the emerging field of synthetic biological research to ...
Developed by the Australian National University, Carbon Cage Nanoparticles can safely deliver radioactive substances to ... for the past six years to develop an injectable form of the Carbon Cage Nanoparticles that can carry therapeutic radioisotopes ... Carbon Cage Nanoparticles are sub-micron size particles of graphitic carbon that encapsulate a metallic core. The technology is ... Carbon Cage Nanoparticles carry a high internal payload of radioactive material while the outer carbon shell is chemically ...
Carbon-11, Nitrogen-13, and Oxygen-15 Chemistry: An Introduction to Chemistry with Short-Lived Radioisotopes2015In: The ... University of Gothenburg, Gothenburg, Sweden. Nekoueishahraki, Bijan University of Gothenburg, Gothenburg, Sweden. Brath, ... 7.18 Addition Reactions with Formation of Carbon-Carbon Bonds: (v) The Oxidative Heck Reaction2014In: Comprehensive Organic ... The carbon-11 isotope is most widely produced by the proton bombardment of nitrogen-14 in a gas phase cyclotron target. 11CO2 ...
Provided by University of Missouri-Columbia Citation: Nuclear CSI: Noninvasive procedure could identify criminal nuclear ... Using carbon nanotubes to strengthen graphene-based membranes used for desalination. Jun 14, 2019 ... scientists from across the campus use the 10-megawatt facility to not only provide crucial radioisotopes for clinical settings ... by Molly Peterson, University of Missouri-Columbia John Brockman and his team have developed procedures that will better ...
... radioisotopes, including carbon-11 and nitrogen-13, administered to leaves of intact tomato plants, they were able to "see" the ... A team led by Timothy Stemmler of Wayne State University and Amy Rosenzweig of Northwestern University used an x-ray ... Microbes Work Together to Process Dissolved Organic Carbon Marine dissolved organic matter (DOM) contains as much carbon as the ... An example of the impact of IMG-ACT is at the University of California, Los Angeles, where all life science majors use the IMG- ...
Major Uses of Radioisotopes in the United States - Ohio University Dept of Laboratory and Radiatio Safety. ... The carbon style dosimeters will still operate.. Gamma: If there is an indication of radioactivity, it is most likely gamma or ... The carbon style dosimeters will still operate.. Gamma: If there is an indication of radioactivity, it is most likely gamma or ... Carbon-14 Major research tool. Helps in research to ensure that potential drugs are metabolized without forming harmful by- ...
Carbon Radioisotopes. Chromatography, Thin Layer. Gossypium / metabolism*. Hydrolysis. Kinetics. Membrane Lipids / metabolism. ... Department of Biological Sciences, University of North Texas, Denton 76203, USA.. Export Citation: APA/MLA Format Download ... 0/Carbon Radioisotopes; 0/Membrane Lipids; 0/Palmitic Acids; 0/Phosphatidylethanolamines; 0/Phospholipids; 57-10-3/Palmitic ...
Yates KK, Robbins LL (1999) Radioisotope tracer studies of inorganic carbon and Ca in microbially derived CaCO3. Geochim ... 1.Department of Environmental Science and EngineeringJatiya Kabi Kazi Nazrul Islam UniversityMymensinghBangladesh ... In: Proceedings of the Institute of Natural Sciences, Nihon University, pp 1-17Google Scholar ... carbon dioxide generates as well as precipitates CaCO3 by microbial metabolism. Bio-cementation technology is used to make ...
... using the tracer carbon-14 (also discovered at Berkeley). Today, radioisotope tracers are a fundamental tool of biology. ... Ernest Lawrence about the time he came to the University of California at Berkeley in 1928.. ... From Radioisotopes to Medical. Imaging, History of Nuclear Medicine. Written at Berkeley. September 9, 1996. By Jeffery Kahn, [ ... Hamilton realized that radioisotopes with a short half-life -- a property which allows them to be used without medical side ...
Three million years ago, in the Pliocene era, the atmosphere contained as much carbon dioxide as it does today; temperatures ... 5) Dipesh Chakrabarty, "The Anthropocene? Some Rifts in Contemporary Thinking on Climate Change", paper given at the University ... A feature of the Anthropocene era is the presence of entirely new substances, created since 1945, including radioisotopes, ... The globalisation of the petrochemical industry has produced a "palaeontology of plastic", according to University of Leicester ...
Carbon Radioisotopes. Chromatography, High Pressure Liquid. Chromatography, Thin Layer. Coffee / classification, metabolism*. ... Department of Biology, Faculty of Science, Ochanomizu University, Tokyo, Japan.. Export Citation: APA/MLA Format Download ...
  • Carbon-14 (14C), or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons. (wikipedia.org)
  • Carbon-14 goes through radioactive beta decay: 14 6C → 14 7N + e− + ν e By emitting an electron and an electron antineutrino, one of the neutrons in the carbon-14 atom decays to a proton and the carbon-14 (half-life of 5,700 ± 40 years) decays into the stable (non-radioactive) isotope nitrogen-14. (wikipedia.org)
  • Plants absorb the naturally occurring radioactive carbon-14 isotope during photosynthesis. (natureasia.com)
  • Molybdenum-99, the parent isotope of technetium-99m, is the most widely used radioisotope for the diagnosis and treatment of cancer. (missouri.edu)
  • The technique hinges on carbon-14, a radioactive isotope of the element that, unlike other more stable forms of carbon, decays away at a steady rate. (scientificamerican.com)
  • By measuring the ratio of the radio isotope to non-radioactive carbon, the amount of carbon-14 decay can be worked out, thereby giving an age for the specimen in question. (scientificamerican.com)
  • Libby is best known as the developer of the radiocarbon dating technique for determining the age of artifacts based on the radioactive isotope carbon-14 (ordinary carbon is primarily carbon-12), for which he was awarded the Nobel Prize in Chemistry in 1960. (encyclopedia.com)
  • In attempting to tackle these questions I have also developed interests in stable isotope geochemistry, geochronology (radiocarbon, short-lived radioisotopes, tephra) and carbon and nutrient dynamics. (exeter.ac.uk)
  • The half-life of a radioactive isotope describes the amount of time that it takes half of real life applications of carbon dating isotope in a sample to decay. (advertmania.com)
  • Researchers from NOAA and the University of Colorado have devised a breakthrough method for estimating national emissions of carbon dioxide from fossil fuels using ambient air samples and a well-known isotope of carbon that scientists have relied on for decades to date archaeological sites. (eurekalert.org)
  • Carbon-14, or 14C, a very rare isotope of carbon created largely by cosmic rays, has a half-life of 5,700 years. (eurekalert.org)
  • Radioisotopes is a naturally or artificially produced radioactive isotope of an element. (longpondwoodsnh.com)
  • It helps with a particular type of radiocarbon dating, which relies on measuring the concentration of carbon-14, a radioactive isotope with a half life of about 5,700 years. (thenakedscientists.com)
  • My research group at LSU seeks to provide answers to some of these fundamental questions related to ocean carbon biogeochemistry and environmental quality through field based observations, natural isotope tracers and laboratory microcosm experiments. (lsu.edu)
  • After returning he began to develop the new technique of radiocarbon dating, which relies on detecting the residue of a radioactively unstable form (isotope) of carbon (carbon-14) in organic materials. (teara.govt.nz)
  • Arrange carbon as a parent isotope 14c remaining is the pharaohs among other methods of carbon. (phxescort.com)
  • However, the isotope of determining carbon-14 is the basic building block of a technique used to estimate the university of biological. (phxescort.com)
  • Because scientists know polonium's radioactive decay rate, they can use the isotope as a timer to observe how quickly various forms of particulate carbon leave the ocean's surface. (cuny.edu)
  • The isotope Carbon is used in radiocarbon dating. (jankossencontemporary.com)
  • carbon dating (radiocarbon dating) Method of determining the age of organic materials by measuring the amount of radioactive decay of an isotope of carbon, carbon (C 14). (jankossencontemporary.com)
  • The carbon isotope is formed naturally from nitrogen atoms in the atmosphere's upper layer (the stratosphere and the top of the troposphere). (jankossencontemporary.com)
  • Radiocarbon dating (also referred to as carbon dating or carbon dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon. (jankossencontemporary.com)
  • Radioactive isotope used in carbon dating - if you are a middle-aged man looking to have a good time dating man half your age, this article is for you. (best-adult-dating-services.com)
  • Carbon-14, 14c, or radiocarbon, is a radioactive isotope of carbon discovered on february 27, 1940, by martin kamen and sam ruben. (best-adult-dating-services.com)
  • Libby estimated that the radioactivity of exchangeable carbon-14 would be about 14 disintegrations per minute (dpm) per gram of pure carbon, and this is still used as the activity of the modern radiocarbon standard. (wikipedia.org)
  • for example, in peatland landscapes, radiocarbon can indicate that carbon which was previously stored in organic soils is being released due to land clearance or climate change. (wikipedia.org)
  • There are a lot of things made of carbon, so radiocarbon dating has wide applications. (advertmania.com)
  • Now scientists led by Kevin Uno at Columbia University have proved that you can get accurate dates on relatively recent material by doing radiocarbon dating from the bomb curve itself. (thenakedscientists.com)
  • Absolute age of determining the ages of radiocarbon carbon-14 in the lab manual. (insightlyweb.com)
  • Director of arizona, at the university of oxford radiocarbon dating sites on your computer and hookups? (insightlyweb.com)
  • Radiocarbon dating lab kits, research at the university of arizona, alaska, the grasp of radiocarbon dating. (insightlyweb.com)
  • Kanimozhi had any other ams, can provide the university of radiocarbon laboratories and breeding. (insightlyweb.com)
  • The original paper on radiocarbon dating, published by Willard Libby in 1949, gave very little detail and used a method based on counting solid carbon-14. (teara.govt.nz)
  • After several months of frustrating work they developed a technique using carbon dioxide gas, which provided radiocarbon age measurements to better than plus or minus 50 years - a major achievement for that time. (teara.govt.nz)
  • In 1968 he was awarded a DSc by Victoria University of Wellington for this and his radiocarbon work. (teara.govt.nz)
  • Radiocarbon Web-Info - Extensive information concerning the radiocarbon dating method from Tom Higham, Radiocarbon Laboratory, University of Waikato, New Zealand. (whatuseek.com)
  • Element carbon 14 or radiocarbon, and c-14. (phxescort.com)
  • It decays over time-in other dating - radiometric dating of radiocarbon dating with decay of carbon-14 decay of carbon-14 levels to date fossils. (phxescort.com)
  • Carbon dating, also known as radiocarbon dating, is a method of estimating the age of carbon-bearing materials up to 60, years old. (jankossencontemporary.com)
  • The method of radiocarbon dating itself is the product of research at the university of chicago by j. 5 billion years old, based on radioisotope dating techniques. (best-adult-dating-services.com)
  • Radiocarbon dating compares the amount of normal carbon with the amount of radioactive carbon in a sample. (best-adult-dating-services.com)
  • Radiocarbon dating compares the present ratio of carbon-14 to carbon-12 to determine how long ago the living thing died. (best-adult-dating-services.com)
  • By measuring the amount of carbon-14 in organic remains, scientists can determine how long ago they were living. (natureasia.com)
  • Operating 6.5 days a week, 52 weeks a year, scientists from across the campus use the 10-megawatt facility to not only provide crucial radioisotopes for clinical settings globally, but also to carbon date artifacts, improve medical diagnostic tools and prevent illness. (missouri.edu)
  • 2 Since most of the scientists involved assumed the standard geological time scale was correct, the obvious explanation for the 14 C they were detecting in their samples was contamination from some source of modern carbon with its high level of 14 C. Therefore they mounted a major campaign to discover and eliminate the sources of such contamination. (icr.org)
  • Now, a team of Scientists from the University of Birmingham is leading the emerging field of synthetic biological research to bring a Star Trek inspired 'tricorder' detector a step closer to reality with an initial focus on food safety. (birmingham.ac.uk)
  • This Master Research Collaboration Agreement with SingHealth is a milestone in the development of Sirtex's Carbon Cage Nanoparticle technology and brings together a leading group of physician scientists from the National Cancer Centre of Singapore with a strong track record of transitioning new technologies into the clinic. (fiercepharma.com)
  • Now, scientists at the University of Missouri have developed procedures that will better identify individuals exposed to uranium within one year. (phys.org)
  • Ferrieri, and his international team of researchers, including scientists from the University of Bern in Switzerland, Brookhaven National Laboratory in New York and the U.S. Department of Agriculture, used radioisotopes to trace essential nutrients and hormones as they moved through live corn plants. (missouri.edu)
  • So these scientists employed a different dating technique using radioisotopes of uranium and thorium. (kcur.org)
  • New carbon capture membrane boasts carbon dioxide highways (Mar. 20, 2016) - A new, highly permeable carbon capture membrane developed by scientists from the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Be. (chemistry2011.org)
  • Uploaded by Real life applications of carbon dating - HowStuffWorksIn the movies, scientists use "carbon dating" to determine the age of ancient artifacts and dinosaur. (advertmania.com)
  • Accurately calculating emissions of carbon dioxide from burning fossil fuels has challenged scientists for years. (eurekalert.org)
  • Scientists discover 'supramolecule' that could help reduce nuclear, agricultural waste (Oct. 13, 2016) - Indiana University researchers have reported the first definitive evidence for a new molecular structure with potential applications to the safe stora. (chemistry2011.org)
  • Nano-Spike Catalysts Convert Carbon Dioxide Directly Into Ethanol (Oct. 13, 2016) - In a new twist to waste-to-fuel technology, scientists at the Department of Energy's Oak Ridge National Laboratory have developed an electrochemical. (chemistry2011.org)
  • An oversight in a radioisotope dating technique used to date everything from meteorites to geologic samples means that scientists have likely overestimated the age of many samples, according to new research from North Carolina State University. (heritagedaily.com)
  • To conduct radioisotope dating, scientists evaluate the concentration of isotopes in a material. (heritagedaily.com)
  • In August 1948, as a result of a cabinet decision to establish a group of scientists in the DSIR to undertake nuclear research, Rafter was sent to study at the Massachusetts Institute of Technology and Columbia University, New York, and to visit nuclear establishments in the US, Canada and England. (teara.govt.nz)
  • Throughout this period Rafter zealously encouraged New Zealand scientists to use radioisotopes, visiting Wellington, Palmerston North and Napier hospitals to discuss the use of phosphorus-32 in the treatment of blood cancers and iodine-131 for the diagnosis and treatment of thyroid cancers. (teara.govt.nz)
  • Nuclear instrument called an object, most notably carbon-14 atom disintegrates fine instruments are used by scientists have long recognized that have taken place. (phxescort.com)
  • WASHINGTON, DC - The Department of Energy's (DOE's) Office of Science has selected 49 scientists from across the nation -- including 22 from DOE's national laboratories and 27 from U.S. universities -- to receive significant funding for research as part of DOE's Early Career Research Program. (eurekalert.org)
  • Radiometric dating of carbon-14, usually based on the scientists measured the earth chronometers, then, radium. (clinicaspacioazul.com)
  • Scientists have long known that the ocean is a carbon sink. (cuny.edu)
  • Scientists like Professor Gillian Stewart (GC/Queens College, Earth and Environmental Sciences ) are finding novel ways to address these uncertainties and understand how the phenomenon will be affected by the accumulation of carbon in the atmosphere. (cuny.edu)
  • So, scientists can estimate the age of the fossil by looking at the level of decay in its radioactive carbon. (jankossencontemporary.com)
  • The course will be held at the Geoscience Institute of Federal University of Bahia, from 25th to 29th June 2019, attending around 30 undergraduate, graduate students and scientists of Earth Sciences, specially of Geochemistry, Oceanography, Geology and Petroleum Engineer. (pro.br)
  • Carbon-14 decays into nitrogen-14 through beta decay. (wikipedia.org)
  • After they die, the absorbed radioisotope decays naturally according to the carbon's half-life. (natureasia.com)
  • Once they die, the radioactivity slowly dies away as that stock of carbon-14 decays. (thenakedscientists.com)
  • They demonstrated that carbon-11 decays by positron emission to the stable nuclide 11 B [ Eq. (1) ]. (intechopen.com)
  • and carbon-14, which occurs in trace amounts, making up about 1 or 1.5 atoms per 1012 atoms of carbon in the atmosphere. (wikipedia.org)
  • A gram of carbon containing 1 atom of carbon-14 per 1012 atoms will emit ~0.2 beta particles per second. (wikipedia.org)
  • This resemblance is used in chemical and biological research, in a technique called carbon labeling: carbon-14 atoms can be used to replace nonradioactive carbon, in order to trace chemical and biochemical reactions involving carbon atoms from any given organic compound. (wikipedia.org)
  • Carbon-14 is produced in the upper layers of the troposphere and the stratosphere by thermal neutrons absorbed by nitrogen atoms. (wikipedia.org)
  • The rate of 14C production can be modelled, yielding values of 16,400 or 18,800 atoms of 14C per second per square meter of the Earth's surface, which agrees with the global carbon budget that can be used to backtrack, but attempts to measure the production time directly in situ were not very successful. (wikipedia.org)
  • Particularly fascinating were a succession of papers from Western Reserve University that showed how compounds labeled with isotopic carbon and/or heavy nitrogen atoms could be tracked during their conversion from foodstuffs to cellular materials. (nobelprize.org)
  • A key technical advance, which occurred about 25 years ago, involved the ability to measure the ratio of 14 C atoms to 12 C atoms with extreme precision in very small samples of carbon, using an ion beam accelerator and a mass spectrometer. (icr.org)
  • Carbon-14 is formed when neutrons from cosmic radiation collide with nitrogen atoms in our atmosphere forming protons and. (best-adult-dating-services.com)
  • Radioisotopes are atoms which have an unstable nucleus, meaning they will undergo radioactive decay. (best-adult-dating-services.com)
  • As a project during the senior year, I studied a group of papers that dealt with the application of newly available radioisotopes as tracers for the study of intermediary metabolism. (nobelprize.org)
  • In a series of tests, the team injected radioisotope tracers in healthy and rootworm-infested corn plants. (missouri.edu)
  • Today, radioisotope tracers are a fundamental tool of biology. (lbl.gov)
  • Radioisotopes (radioactive isotopes or radionuclides or radioactive nulcides) are used in two major ways: either for their radiation alone (irradiation, nuclear batteries) or for the combination of chemical properties and their radiation (tracers, biopharmaceuticals). (longpondwoodsnh.com)
  • This course is aimed to provide the fundamental concepts of the radioisotopes and its application in studies of environmental processes, with a strong component on their use as geochronological tracers. (pro.br)
  • In agricultural applications, radioisotopes are usually used as tracers. (maxi-file.com)
  • Plants fix atmospheric carbon during photosynthesis, so the level of 14C in plants and animals when they die approximately equals the level of 14C in the atmosphere at that time. (wikipedia.org)
  • Melvin Calvin's Berkeley team resolved the riddle of photosynthesis, discovering the path of carbon as it travels through a plant, using the tracer carbon-14 (also discovered at Berkeley). (lbl.gov)
  • Microbes transform DOM into carbon dioxide during a process known as respiration- basically the opposite of photosynthesis carried out by phytoplankton. (nasa.gov)
  • The first biological application of carbon-11 was published by Ruben in 1939 who investigated photosynthesis in plants using [ 11 C]carbon dioxide [ 2 ]. (intechopen.com)
  • Plants take in atmospheric carbon dioxide by photosynthesis, and are ingested by animals. (jankossencontemporary.com)
  • The primary natural source of carbon-14 on Earth is cosmic ray action on nitrogen in the atmosphere, and it is therefore a cosmogenic nuclide. (wikipedia.org)
  • Marine records, such as corals, have been used to push farther back in time, but these are less robust because levels of carbon-14 in the atmosphere and the ocean are not identical and tend shift with changes in ocean circulation. (scientificamerican.com)
  • in 3015 the atmosphere will contain 30% of the carbon dioxide it does today. (mondediplo.com)
  • This alien world is the only other planetary body around the sun with a dense atmosphere that is rich in nitrogen and carbon like our own. (scientificamerican.com)
  • This technology is going to radically impact the world with regard to carbon dioxide released into the atmosphere ," Lombard said. (chemistry2011.org)
  • We're addressing the middle link -- capturing carbon dioxide in the atmosphere . (chemistry2011.org)
  • The nuclear bomb tests of the 1950s and 1960s, for example, threw lots of hot neutrons into the atmosphere that almost doubled carbon-14 levels. (thenakedscientists.com)
  • Photosynthetic fixation of CO 2 in surface ocean into different forms of organic carbon effectively removes CO 2 from atmosphere. (lsu.edu)
  • However a large fraction of this organic carbon fixed by phytoplankton in the ocean gets released back into the water column and atmosphere as CO 2 and other inorganic forms of carbon via respiration and microbial decomposition. (lsu.edu)
  • Rafter strongly supported the resulting project to monitor carbon dioxide in the atmosphere at Baring Head, near Wellington. (teara.govt.nz)
  • Building on the atmosphere produces a team of carbon-bearing materials. (clinicaspacioazul.com)
  • But no one doubts that business as usual release of fossil carbon into the atmosphere mainly as the greenhouse gas Carbon Dioxide spells big trouble for humanity and the planet Earth, including eventual massive sea level rise and highly disruptive changes in the Earth's climatology that will make a mess of many things including our food supply. (scienceblogs.com)
  • There are some carbon particles in the atmosphere. (jankossencontemporary.com)
  • Carbon is formed in the upper atmosphere when cosmic rays interact with nitrogen. (jankossencontemporary.com)
  • While carbon occurs in the atmosphere and living organisms, it is almost completely absent from rocks. (jankossencontemporary.com)
  • At high geomagnetic latitudes, the carbon spreads evenly throughout the atmosphere and reacts with oxygen to form carbon dioxide. (jankossencontemporary.com)
  • Carbon dating is a variety of radioactive dating which is applicable only to matter which was once living and presumed to be in equilibrium with the atmosphere, taking in carbon. (best-adult-dating-services.com)
  • Now, nuclear researchers at the University of Missouri are exploring alternate materials that could be used to help recycle the metals used to produce radioisotopes more efficiently and with less waste. (missouri.edu)
  • The researchers believed that by chemically combining the three metals with sulfides, they could effectively produce radioisotopes while making the metal easier to reuse. (missouri.edu)
  • Researchers created other radioisotopes, such as radioactive phosphorus, by immersing a nonradioactive target material, such as melted sulfur in aluminum cans, in the sea of neutrons inside the reactor. (oakridger.com)
  • Under this agreement researchers from Singapore General Hospital (SGH) and National Cancer Centre Singapore (NCCS) will explore the potential of a new technology known as Carbon Cage Nanoparticles to develop a new generation of cancer therapies. (fiercepharma.com)
  • Now, researchers at the University of Missouri , using advanced nuclear methods, have determined the mechanisms corn plants use to combat the western corn rootworm, a major pest threatening the growth of the vital food source. (missouri.edu)
  • Donner Lab researchers used radioisotopes of inert gases to study decompression sickness and other maladies. (lbl.gov)
  • Our specialized equipment and the unique expertise of our staff allow us to offer personalized support that meets the research needs of researchers at the CHUM Research Centre as well as those of our industry- and university-based clients. (chumontreal.qc.ca)
  • Our services are available to researchers from universities, hospitals and for projects in partnership with the industry. (chumontreal.qc.ca)
  • The post-doc will have a leadership role in the use of radioisotopes of organic carbon across arctic freshwater research and will have the opportunity to work with a wide range of researchers across universities and government agencies. (ucar.edu)
  • A microelectromechanical silicon chip developed by researchers from the A*STAR Institute of Microelectronics, Singapore, in collaboration with colleagues from the National University of Singapore, offers a feasible solution for in vivo diagnostics . (chemistry2011.org)
  • Under the program, university-based researchers will receive at least $150,000 per year to cover summer salary and research expenses. (eurekalert.org)
  • Researchers had previously used other elements but Stewart found polonium-210 interesting because it is the only non-manmade radioisotope that naturally accumulates in living things. (cuny.edu)
  • To date the geochronology of radioactivity have even carbon from the half-life of years old. (advertmania.com)
  • Radionuclides also termed as radioisotopes are elements that possess radioactivity. (omicsonline.org)
  • He has been involved in teaching and mentoring at university level since 1994, being in charge of courses such as: Radiation physics, Environmental radioactivity and Applications of radiotracers in oceanography. (pro.br)
  • Compared with other algae, the low carbon flux into β-glucan is a unique feature of carbon metabolism in E. huxelyi . (springer.com)
  • 2013 ). According to recent genomic studies, the newly acquired genes from host protists contribute to the carbon metabolism of secondary algae. (springer.com)
  • 2011 ). In addition, the carbon metabolism of E. huxleyi is distinct from that of primary endosymbiotic algae as it yields unique photosynthetic products, such as long-chain unsaturated ketones known as alkenones, water-soluble β-glucan, and acid polysaccharides (Rontani et al. (springer.com)
  • as principles, carbon dioxide generates as well as precipitates CaCO 3 by microbial metabolism. (springer.com)
  • The assumption that the metabolism of Sevin involves an initial hydrolysis and then further decomposition of the fragments was not supported by carbon-14 studies. (osti.gov)
  • This form of mixotrophy differs from mixotrophic metabolism in bacterial species, which generally involves uptake dissolved carbon molecules. (jove.com)
  • Concurrently, radioisotope incorporation methods were used to estimate heterotrophic bacterial productivity and metabolism. (edu.au)
  • Sources of terrestrial organic carbon in the Mississippi River plume region: Evidence for the importance of coastal marsh inputs. (tulane.edu)
  • The overall objective of this project is to determine the role of chemical processes associated with dissolved organic carbon (DOC) on the transport and reactivity of both naturally occurring and anthropogenic compounds. (usgs.gov)
  • Thus the availability of organic carbon can directly and indirectly impact various biogeochemical processes in the ocean like formation of hypoxia, increase in ocean acidification, release of various redox sensitive elements and contaminants from the sediments. (lsu.edu)
  • Kuanbo Z., Maiti, K. Dai, M., Kao, S., Buesseler, K. (2016) Does adsorption of dissolved organic carbon and thorium onto membrane filters affect the carbon to thorium ratios, a primary parameter in estimating export carbon flux? (lsu.edu)
  • Collected sediments were generally homogenous mud which contained much more mixture of silt and clay compared to sand and relatively low content of organic carbon (i.e. less than 5% at all sampling stations). (elsevier.com)
  • In the dry valley aquatic food web, protists that fix inorganic carbon (autotrophy) are the major producers of organic carbon for organotrophic organisms 4, 2 . (jove.com)
  • RubisCO catalyzes the rate limiting step in the Calvin Benson Bassham (CBB) cycle, the major pathway by which autotrophic organisms fix inorganic carbon and provide organic carbon for higher trophic levels in aquatic and terrestrial food webs 12 . (jove.com)
  • Dissolved organic carbon (DOC) concentrations reflected the strong stratification and seasonal variation of other lake parameters. (edu.au)
  • Barely perturbing the natural environment, FACE will study the long-term effect of elevated carbon dioxide on mature oak trees and surrounding fauna and flora. (birmingham.ac.uk)
  • Much of this is associated with climate change, such as effects of elevated carbon dioxide concentrations, increasing temperatures or extreme weather conditions. (bangor.ac.uk)
  • In addition, this candidate will have a foundational knowledge of carbon biogeochemistry in freshwaters, understands the application of stable and radio-isotopes to carbon cycling in aquatic systems, is familiar with remote sensing techniques, and is willing to become an integral component in a larger research effort. (ucar.edu)
  • Under the guidance of Dr. David Butman the successful candidate will engage directly with collaborators from the U.S. Geological Survey, and Florida State University (R. Spencer) to carry out field campaigns within the Yukon River Basin in interior Alaska during the summer of 2016 and 2017. (ucar.edu)
  • Khan NT (2017) Radioisotopes and Their Biomedical Applications. (omicsonline.org)
  • It's worth noting that the issues raised here do not apply to carbon dating, which does not utilize isotopic ratios. (heritagedaily.com)
  • He and his team contributed much to international understanding of the carbon cycle, and New Zealand's present atmospheric chemistry research, in particular its expertise in trace gas isotopic techniques, stems from his foresight and encouragement. (teara.govt.nz)
  • Other commonly used isotopic clocks are both carbon 14 is melted, is determined where they discovered the french physicist, we sketched in minerals. (clinicaspacioazul.com)
  • Despite such unique features, there is no detailed information on the patterns of carbon allocation into these compounds. (springer.com)
  • Alkenones are structurally unique lipids characterized by the presence of extremely long-chain carbon compounds (C 37 -C 40 ) with two to four trans -double bonds and a keto -group in each molecule (Rontani et al. (springer.com)
  • Although carbon-11-labeled compounds were created shortly after the development of the cyclotron by bombarding boron-10 with deuterons, the boron-10(d,n) reaction, the production of longer-lived carbon-14 by the nitrogen-14(n,p) reaction in the nuclear reactor at ORNL was instrumental in establishing its widespread use throughout the field of biology. (nap.edu)
  • Carbon compounds have limitless uses. (jankossencontemporary.com)
  • In 1955, Emmett moved back to Johns Hopkins University, albeit in a different department, as the William R. Grace Professor of Chemistry. (wikipedia.org)
  • After receiving his BS degree in 1931, he continued his university work at Berkeley, studying under physical chemists Gilbert Newton Lewis, dean and chairman of the College of Chemistry, and Wendell M. Latimer. (encyclopedia.com)
  • Simultaneously, he also worked under Harold C. Urey, the 1934 Nobel chemistry laureate, at Columbia University to develop methods for separating uranium isotopes by gaseous diffusion for production of the bomb. (encyclopedia.com)
  • In October 1945 Libby became professor of chemistry in the Department of Chemistry and the Institute for Nuclear Studies (now the Enrico Fermi Institute for Nuclear Studies) at the University of Chicago (1945- 1959). (encyclopedia.com)
  • At age thirty-six he became the youngest full professor at Chicago, where he carried out the work resulting in his winning the 1960 Nobel Prize in Chemistry "for his method to use carbon-14 for age determination in archaeology, geology, geophysics, and other branches of science. (encyclopedia.com)
  • Outstanding Research Award, Department of Chemistry and Biochemistry, University of San Diego. (sccwrp.org)
  • Invited speaker at the University of San Diego, Department of Chemistry and Biochemistry Summer Research Symposium. (sccwrp.org)
  • He was educated at Marist Brothers' School, St Patrick's College, Wellington, and Victoria University College, where he graduated BSc in 1935 and MSc in chemistry in 1938. (teara.govt.nz)
  • Carbon-11 is one of the most useful radionuclides for PET chemistry, since its introduction into a biologically active molecule dose not modify the biochemical properties of the compound. (intechopen.com)
  • Argonne Radioisotopes Have Potential for Medical Diagnosis and Treatment (Nov. 16, 2016) - are essential to nuclear medicine. (chemistry2011.org)
  • Secondary tropical forests absorb carbon at higher rate than old-growth forests (Feb. 10, 2016) - At the climate talks in Paris, all attention was focused on how humanity can reduce climate change by reducing carbon emissions, or by increasing carb. (chemistry2011.org)
  • There are 2,089 foreign students (As of 2016 [update] ) enrolled in the University. (wikipedia.org)
  • Sampling will include organic and inorganic carbon concentrations, dissolved gas fluxes, as well as stable and radioisotope sampling and preparation in an effort to investigate the movement of carbon from terrestrial to aquatic systems across a changing permafrost landscape. (ucar.edu)
  • In groundwater applications typically DIC (dissolved inorganic carbon DIC. (advertmania.com)
  • Inorganic carbon sources include carbon dioxide, limestone, and dolomite. (jankossencontemporary.com)
  • Moss stable isotopes (carbon-13, oxygen-18) and testate amoebae reflect environmental inputs and microclimate along a latitudinal gradient on the Antarctic Peninsula. (exeter.ac.uk)
  • A cyclotron could produce radioisotopes like radiophosphorus (P32) and carbon 14, but Hughes and Kamen agreed that a tracer program needed stable isotopes such as nitrogen-15 and Carbon-13 (Kamen, Dark Politics, Radiant Science: memoir of the nuclear age, 1985, pp. 191-192). (wustl.edu)
  • I used nitrogen and carbon stable isotopes to show that cadmium, in contrast to copper, could be magnified along certain freshwater food webs. (usgs.gov)
  • Changing the amount of a and is to radiometric dating stable carbon 14 c and electrons. (insightlyweb.com)
  • How does radiometric dating contains two options as carbon dating? (insightlyweb.com)
  • Radiometric dating with a technique used to determine the radiometric dating has been one of millions of radioisotopes. (phxescort.com)
  • noun A form of radiometric dating used to determine the age of organic remains in ancient objects, such as archaeological specimens, on the basis of the half-life of carbon-14 and a comparison between the ratio of carbon-12 to carbon-14 in a sample of the remains to the known ratio in living organisms. (wordnik.com)
  • Learn about different types of radiometric dating, such as carbon dating. (best-adult-dating-services.com)
  • People who ask about carbon-14 (14 c) dating usually want to know about the radiometric[1] dating methods that are claimed to give millions and billions of years-carbon dating can only give thousands of years. (best-adult-dating-services.com)
  • For some reason, which I have not yet figured out, at least one person per week has been asking me about the Carbon-14 Radiometric Dating Technique. (lookformedical.com)
  • Prior to looking at the many flaws in the Carbon-14 Dating Technique, it should be noted that no radiometric technique is reliable. (lookformedical.com)
  • Developed by the Australian National University, Carbon Cage Nanoparticles can safely deliver radioactive substances to specific cancer sites deep within the body. (fiercepharma.com)
  • A feature of the Anthropocene era is the presence of entirely new substances, created since 1945, including radioisotopes, fluorinated gases and the products of biotechnology and nanotechnology. (mondediplo.com)
  • Substances that take part in biochemical processes in the body are labeled with radioisotopes (radioactive forms of elements, such as carbon-11, nitrogen-13, or oxygen-15). (daviddarling.info)
  • Incorporation of radioisotopes to biologically active substances is introduced into body in order to observe the functioning of an organ functioning or a metabolic path way etc. (omicsonline.org)
  • In a paper published in the journal the Proceedings of the National Academy of Sciences , they report the first-ever national scale estimate of fossil-fuel derived carbon dioxide (CO2) emissions obtained by observing CO2 and its naturally occurring radioisotope, carbon-14, from air samples collected by NOAA's Global Greenhouse Gas Reference Network. (eurekalert.org)
  • Three isotopes of carbon occur naturally. (jankossencontemporary.com)
  • Carbon dating analyzing the relative abundance of particular naturally-occurring radioisotopes is of vital importance in determining the age of rocks and other materials that are of interest to geologists, anthropologists, hydrologists, and archaeologists, among others. (best-adult-dating-services.com)
  • Prior to joining SCCWRP, her research focused on the environmental fate and effects of nanocopper from pressure-treated lumber in aqueous systems, as well as contaminant interactions and biological effects of single-walled carbon nanotubes in benthic estuarine systems. (sccwrp.org)
  • The different isotopes of carbon do not differ appreciably in their chemical properties. (wikipedia.org)
  • noun physics, archaeology, paleontology A method of estimating the age of an artifact or biological vestige based on the relative amounts of the different isotopes of carbon present in a sample . (wordnik.com)
  • Two other isotopes of carbon are and. (jankossencontemporary.com)
  • It was chosen because it was the lowest point in a decades-long decrease in atmospheric carbon dioxide, measurable by traces found in Artic ice cores. (lareviewofbooks.org)
  • Carbon-14 was discovered on February 27, 1940, by Martin Kamen and Sam Ruben at the University of California Radiation Laboratory in Berkeley, California. (wikipedia.org)
  • At the time, the California Institute of Technology was paying PhD students nearly double what other programs were offering, making the university an enticing choice for Emmett. (wikipedia.org)
  • In 1926 Libby graduated from high school, and the following year he entered the University of California at Berkeley. (encyclopedia.com)
  • Ernest Lawrence about the time he came to the University of California at Berkeley in 1928. (lbl.gov)
  • Lund university and invented new insight into low and st joseph's-bangalore, tennessee, mumbai, safest icer 50: swiss gemmological institute of california, who is still underway. (insightlyweb.com)
  • Element 94 was first synthesized in 1940 by a team led by Glenn T. Seaborg and Edwin McMillan at a University of California, Berkeley laboratory. (phys.org)
  • From University of California at Santa Cruz. (infinit.net)
  • According to the World Nuclear Association, more than 10,000 hospitals worldwide use radioisotopes in medicine. (missouri.edu)
  • On 8 December 1941, the day after the Japanese attacked Pearl Harbor, Libby's sabbatical Guggenheim Fellowship at Princeton University was interrupted, and in 1942 he joined the Metallurgical Laboratory at the University of Chicago to work on the top secret Manhattan Project to develop a nuclear bomb, remaining there until 1945. (encyclopedia.com)
  • Technegas has been widely used in Nuclear Medicine as an inhalable aerosol of Carbon Cage Nanoparticles containing a radiologically detectable radioisotope for the diagnosis of blood clots in the lungs. (fiercepharma.com)
  • Moreover, they traveled together to facilities at McMaster University and University of Iowa to troubleshoot the mass spectrometer that they built (Kamen, Dark Politics, Radiant Science: memoir of the nuclear age, 1985, pp. 192-193). (wustl.edu)
  • Be sure to indicate if your radioisotope is in solution (medical cocktail) or in a device (nuclear gauge, handheld lead analyzer, etc. (elitewritings.net)
  • April 19th, 2018 - Advantages And Disadvantages Of Radioisotopes In A Health B Agriculture C Industries D Defense' 'DISADVANTAGES OF RADIOISOTOPES IN NUCLEAR MEDICINE May 1st, 2018 - 1 The major demerit of using radioisotopes in nuclear medicine is that it has a negative impact on health Tissues are The major demerit of using radioisotopes in nuclear medicine is that it has a negative impact on health. (longpondwoodsnh.com)
  • Tens of millions of nuclear medicine procedures are performed each year, and demand for radioisotopes … Search for more papers by this author. (longpondwoodsnh.com)
  • disadvantages of radioisotopes in nuclear medicine. (longpondwoodsnh.com)
  • Following on from these successes, Rafter encouraged the DSIR and the university colleges to lobby the government for a build-up of nuclear science research in New Zealand. (teara.govt.nz)
  • Various geologic, atmospheric and solar processes can influence atmospheric carbon-14 levels. (scientificamerican.com)
  • These results provide important new clues on the fundamentals used by microbes to mediate important environmental processes such as carbon cycling and contaminant transformation and suggest intriguing new approaches to direct generation of electricity in microbial fuel cell systems. (ornl.gov)
  • 1992). The use of radioisotopes is unique in that it provides a method for measuring biochemical processes in vivo, especially in cases in which the process is easily saturated, since radiation makes it possible to detect and localize quantities as small as only a few thousand radiolabeled molecules. (nap.edu)
  • Utilization of artificial and natural radioisotopes to study environmental processes. (lsu.edu)
  • Anna, Jessica M. , University of Pennsylvania, Philadelphia, PA, "Tracking Photochemical and Photophysical Processes for Solar Energy Conversion via Multidimensional Electronic and Vibrational Spectroscopic Methods," selected by the Office of Basic Energy Sciences. (eurekalert.org)
  • Various geologic, atmospheric and solar processes Best Online Hookup Site 30 Somethings influence atmospheric carbon levels. (ciclano.host)
  • In this study, we applied a radioisotope assay modified for filtered samples 13 to monitor maximum carboxylase activity as a proxy for carbon fixation potential and metabolic versatility in the Lake Bonney enrichment cultures. (jove.com)
  • The first carbon-11 experiment on humans was performed by Tobias in 1945 who studied the fixation of [ 11 C]carbon monoxide by red blood cells [ 4 ]. (intechopen.com)
  • Carbon Cage Nanoparticles are sub-micron size particles of graphitic carbon that encapsulate a metallic core. (fiercepharma.com)
  • It is an object of this invention to prepare radioactive particles consisting of carbonaceous matrices having firmly bound radioisotopes dispersed therein. (google.com)
  • Up to 30 percent by weight of radioisotope ions can be incorporated into the particles. (google.com)
  • Polonium can latch on to carbon particles at the ocean's surface, and can accumulate in living organisms like plankton. (cuny.edu)
  • She set out for the Mediterranean, where there was an ongoing project on the biological pump, and collected samples to see if she could use polonium-210 and lead-210 to track sinking carbon particles. (cuny.edu)
  • Pure carbon is considered non-toxic, although inhalation of fine particles, such as soot, can damage lung tissue. (jankossencontemporary.com)
  • Radioisotopes that emit low-penetrating alpha particles and that have a relatively long half-life have found use in domestic settings such as smoke detectors. (best-adult-dating-services.com)
  • Organisms in the surface waters trap carbon and transport it to the ocean depth. (cuny.edu)
  • There is a small amount of radioactive carbon-14 in all living organisms because it enters the food chain. (best-adult-dating-services.com)
  • Because organisms stop taking in carbon-14 at death, the age of the material can be precisely determined by this ratio of carbon isotopes. (best-adult-dating-services.com)
  • Physicist Arthur Hughes, an expert on X-rays who was a consulting physicist to the radiology department, took him in hand when he arrived at Washington University in April 1945 (Kamen, 1985, p. 188). (wustl.edu)
  • There's generally an uncertainty of a few decades on samples younger than 10,000 years, and you need various fiddle factors in there to get a reliable answer, not least because of human activity skewing carbon-14 concentrations. (thenakedscientists.com)
  • They were members of George Boyd's group, which pioneered the use of ion-exchange chromatography for separating radioisotopes. (oakridger.com)
  • Thus radioisotopes could be used for numerous biomedical purposes such as cancer and tumour treatment, imaging, biochemical assays, biological labelling, sterilization, clinical diagnostics, radioactive dating etc. (omicsonline.org)
  • Biochemical assays are used to detect the presence and absence of radioisotopes. (omicsonline.org)
  • Optimum temperature for radioisotope incorporation was close to in-situ temperature in most cases, confirming the adaption of in-situ bacteria to the low water temperatures. (edu.au)
  • On March 3, prior to the incorporation of national universities in April 2004, the Committee of Public Relations agreed on a new university logo and color that symbolize Kyushu University under the new structure. (wikipedia.org)
  • The research, published in the journal Science 1 , measured radioactive carbon isotopes in 211 samples collected from museums around the world to determine their age. (natureasia.com)
  • The study] hasn't changed the timescales radically - what it has done is remove some of the uncertainty - and it has ruled out some possibilities that have been seriously considered," explained Christopher Ramsey, who is deputy director of the Research Laboratory for Archaeology and the History of Art at the University of Oxford, United Kingdom. (natureasia.com)
  • Jurisson and her team have continued the research through the summer and are examining other metals to produce other radioisotopes that may have similar properties. (missouri.edu)
  • The MU Research Reactor has been a crucial component to research at the university for more than 40 years. (missouri.edu)
  • For the remainder of his life, Emmett was a visiting research professor at Portland State University, undertaking new research areas, giving seminar talks, and teaching advanced courses in catalysis. (wikipedia.org)
  • On December 1, 2009, the University of East Anglia similarly announced an investigation into Phil Jones, its director of Climate Research. (sourcewatch.org)
  • In April 2010 Virginia's Attorney General Ken Cuccinelli asked the University of Virginia to produce "a sweeping swath of documents relating to Mann's receipt of nearly half a million dollars in state grant-funded climate research" conducted from 1999-2005, when Mann was employed by the university. (sourcewatch.org)
  • If at some time a heavenly angel should ask what the Laboratory in the hills of East Tennessee did to enlarge man's life and make it better, I daresay the production of radioisotopes for scientific research and medical treatment will surely rate as a candidate for first place. (oakridger.com)
  • Research published in the December 3 issue of Science and led by DOE scientist Derek Lovley of the University of Massachusetts, Amherst, describes a new mechanism by which the bacterium Geobacter metallireducens consumes ethanol, an important intermediate compound in oxygen free soils and sediments, in cooperation with a second organism Geobacter sulfureducens . (ornl.gov)
  • Ferrieri's work highlights the capabilities of the MURR, a crucial component to research at the university for more than 40 years. (missouri.edu)
  • Khazeni's research focuses on solid adsorbents, which capture carbon dioxide and store it for transport or storage. (chemistry2011.org)
  • Through his research on these zeolitic imidazolate frameworks, or ZIFs, Khazeni has synthesized a new subclass of ZIF that incorporates a ring carbonyl group in its organic structure , giving it a vastly greater affinity and selectivity for separating and adsorbing carbon dioxide and a more chemically and thermally stable structure . (chemistry2011.org)
  • Research Associate (postdoctoral) (0148) position is available at the University of Washington to conduct field and lab based research as part of a NASA funded effort to investigate carbon dynamics in arctic and boreal ecosystems. (ucar.edu)
  • My research interests focus on carbon and nutrient (especially nitrogen) cycling in ecosystems. (bangor.ac.uk)
  • Oak Ridge National Laboratory (ORNL) played a pioneering role in the development of the first full-scale operating reactor prototype and the initial production of radioisotopes for applications in medical and biological research (Mirzadeh et al. (nap.edu)
  • Other reactor-produced radioisotopes continue to play a major role in research, and recent advances in many fields (such as molecular biology, including the Human Genome Project) could not have been accomplished without the use of 32 P. In addition, many of the isotopes useful for therapeutic applications, such as strontium-89 for the palliation of metastatic bone pain, are produced in reactors. (nap.edu)
  • Graduate Research Assistant, Duke University. (sccwrp.org)
  • My research group focuses on understanding the fate and transport of different forms of carbon in coastal and deep ocean. (lsu.edu)
  • Carnegie Mellon is a private research university with a distinctive mix of programs in engineering, computer science, robotics, business, public policy, fine arts and the humanities. (botmag.com)
  • The first air sample analyzed for carbon-14 as part of research into a new method of estimating fossil fuel emissions from ambient air was collected here in 2003. (scitechdaily.com)
  • The primary goal is to understand where the carbon dioxide goes and how fast the transport process is," says Yi Tang (Ph.D. '19, Earth and Environmental Sciences), who worked closely with Stewart on this research. (cuny.edu)
  • It is considered one of the most prestigious research-oriented universities in Japan. (wikipedia.org)
  • Rate is an acronym applied to a research project investigating radioisotope dating sponsored by the institute for creation research and the creation research society. (best-adult-dating-services.com)
  • The Tree-Ring Society and the Laboratory of Tree-Ring Research at the University of Arizona partnered with the University Libraries to re-digitize back issues for improved searching capabilities and long-term preservation. (ciclano.host)
  • Preserved leaves in the cores - "they look fresh as if they've fallen very recently", Bronk Ramsey says - yielded 651 carbon dates that could be compared to the calendar dates of the sediment they were found in. (scientificamerican.com)
  • This data set reports lake sediment texture and porosity, carbon (C), nitrogen (N), and phosphorus (P) content of surficial sediments, 210Pb-derived nutrient accumulation rates in sediments, and burial rates of C, N, and P in sediments at eleven locations in Lake Calado, Amazonas, Brazil. (ornl.gov)
  • This book provides information on how humans have altered carbon cycling, sediment dynamics, CO2 budgets, wetland dynamics, and nutrients and trace element cycling at the land-margin interface. (cambridge.org)
  • A common method of carbon dioxide capture is absorption, which captures molecules in a liquid medium. (chemistry2011.org)
  • A hybrid metal and organic structure called a zeolitic imidazolate framework adsorbs carbon dioxide molecules to its structure of metal ions and organic linkers. (chemistry2011.org)
  • Radioisotope is used for biological labelling of cells or entities for identification or tracing specific molecules in an organism. (omicsonline.org)
  • A llison, Thomas K. , SUNY Stony Brook University, Stony Brook, NY, "Ultrafast Dynamics of Molecules on Surfaces Studied with Time?Resolved XUV Photoelectron Spectroscopy," selected by the Office of Basic Energy Sciences. (eurekalert.org)
  • Or, separate it out as a layer of pure carbon dioxide gas around our planet, and it would be about a meter thick - and growing thicker by about a millimetre every fortnight. (gizmodo.com.au)
  • This delay was a consequence of easy access to reactor-produced carbon-14 from the 1950s, which superseded the use of cyclotron-produced carbon-11. (intechopen.com)
  • The more accurate carbon clock should yield better dates for any overlap of humans and Neanderthals, as well as for determining how climate changes influenced the extinction of Neanderthals. (scientificamerican.com)
  • If you have a better estimate of when the last Neanderthals lived to compare to climate records in Greenland or elsewhere, then you'll have a better idea of whether the extinction was climate driven or competition with modern humans," says Paula Reimer, a geochronologist at Queen's University in Belfast, UK. (scientificamerican.com)
  • Reviewing the continued campaign by climate change skeptics , David McKnight, an associate professor at the University of New South Wales (Australia), notes that there several reasons why companies such as Exxon have had some success playing the global warming denial card. (sourcewatch.org)
  • Working with colleagues from the Universities of Aberdeen , Swansea and Plymouth , the PATAGON project aims to develop a new regional network of proxy archives and create quantitative climate reconstructions for southern South America spanning the last ~2000 years, based on the multi-proxy palaeoecological (plant macrofossils, testate amoebae) and geochemical analysis of the Sphagnum -dominated peat deposits of southern Patagonia. (exeter.ac.uk)
  • Looking to determine the calendar age of an analog and study climate change the inventories of carbon 14. (insightlyweb.com)
  • Now pursuing a master's degree in statistics at San Jose State University, Tang is delving into statistical aspects of environmental science - an area that can address issues from climate change to food security. (cuny.edu)
  • Looking for the help make carbon atom in addition to date _____ date the big date fossils contained within those rocks, canada. (insightlyweb.com)
  • Colorado, university of fossils that have shown that routinely to meet eligible single man who. (insightlyweb.com)
  • Carbon-14 dating fossils that could irradiate a. (clinicaspacioazul.com)
  • Third, many dating methods that don't involve radioisotopes-such as helium diffusion, erosion, magnetic field decay, and original tissue fossils-conflict with radioisotope ages by showing much younger apparent ages. (best-adult-dating-services.com)
  • Worse still, sometimes they want to know how evolutionists use Carbon-14 to date dinosaur fossils! (lookformedical.com)
  • In addition to my work on metal trophic transfer, I refined an approach that involves the use stable metal isotopes (rather than radioisotopes) to describe accumulation and loss dynamics in freshwater invertebrates. (usgs.gov)
  • Graduate Teaching Assistant, University of South Carolina. (sccwrp.org)
  • Cedric is a graduate student at the University of South Carolina. (nasa.gov)
  • Other forms of carbon include fullerenes, graphene, carbon nanofoam, glassy carbon, and Q-carbon which is magnetic and fluorescent. (jankossencontemporary.com)
  • Radio carbon dating - It is widely used by archaeologists to date articles composed of organic material e.g wood. (nedukemsblogsit.com)
  • Radioisotopes are widely used for a number of purposes following are some major applications of radioisotope. (omicsonline.org)
  • S 35 P 32 and I 125 are widely used radioisotopes used for labelling [ 2 ]. (omicsonline.org)
  • Carbon-12 and carbon-13 are both stable, while carbon-14 is unstable and has a half-life of 5,730 ± 40 years. (wikipedia.org)
  • Hamilton realized that radioisotopes with a short half-life -- a property which allows them to be used without medical side effects -- were needed. (lbl.gov)
  • Carbon-14 has a half-life of 5,730 ± 40 years-i.e., half the amount of the radioisotope present at any given. (advertmania.com)
  • This decaying property of radioisotopes is called half-life. (omicsonline.org)
  • Carbon and carbon are stable, while carbon is radioactive, with a half-life of around years. (jankossencontemporary.com)
  • The amount of carbon gradually decreases through radioactive beta decay with a half-life of 5, years. (jankossencontemporary.com)
  • Learn about carbon dating and find out what the carbon-14 half-life is. (best-adult-dating-services.com)
  • A half-life measured in thousands of years can suffice ( see carbon-14 dating). (best-adult-dating-services.com)
  • Radioactive half-life (continued) after this reading this section you will be able to do the following: describe carbon dating and how half-life information is used. (best-adult-dating-services.com)
  • Compared to some of the other radioactive isotopes we have discussed, carbon-14's half-life of 5,730 years is. (best-adult-dating-services.com)
  • This post-doc will begin to develop better algorithms for airborne and space-based remote sensing techniques to estimate carbon cycling in freshwaters across the arctic. (ucar.edu)
  • While the link between fossil CO2 emissions and atmospheric 14C has been known for many decades, the construction of a national-scale emission estimate based on atmospheric 14C required the simultaneous development of precise measurement techniques and an emissions estimation framework, largely spearheaded over the past 15 years by NOAA scientist John Miller and University of Colorado scientist Scott Lehman. (eurekalert.org)
  • Radioactive carbon-14 decay could be used to estimate the age of organic materials. (omicsonline.org)
  • Which radioactive dating to estimate the product of chicago by the imbalance makes carbon. (phxescort.com)
  • Carbon Cage Nanoparticles carry a high internal payload of radioactive material while the outer carbon shell is chemically inert and possesses ideal properties for the attachment of cancer-targeting agents or coatings that can impart stealth-like properties to the nanoparticles. (fiercepharma.com)
  • Sirtex has been working closely with the prestigious Australian National University for the past six years to develop an injectable form of the Carbon Cage Nanoparticles that can carry therapeutic radioisotopes for the treatment of cancer and has in-licensed this technology from the Australian National University. (fiercepharma.com)
  • While non-toxic to humans, carbon nanoparticles are deadly to fruit flies. (jankossencontemporary.com)
  • The resulting neutrons (1n) participate in the following n-p reaction: n + 14 7N → 14 6C + p The highest rate of carbon-14 production takes place at altitudes of 9 to 15 km (30,000 to 49,000 ft) and at high geomagnetic latitudes. (wikipedia.org)
  • MURR also is home to a PETrace cyclotron that is used to produced other radioisotopes for medical diagnostic imaging. (missouri.edu)
  • 11C]Carbon dioxide (11CO2), produced by cyclotron, is the most common and versatile primary labeling precursor in the production of 11C-labeled radiopharmaceuticals. (intechopen.com)
  • says Dragonfly's principal investigator Elizabeth Turtle, a planetary scientist at the Johns Hopkins University Applied Physics Laboratory (APL). (scientificamerican.com)
  • Yokohama City University scientist Takanori Takebe and his colleagues used human skin cells that were first reprogrammed to turn them into iPS or induced pluripotent stem cells. (thenakedscientists.com)
  • Most useful for age of carbon with 27 protons and search over any carbon. (phxescort.com)
  • Through another method -- adsorption -- the carbon dioxide physically bonds to a microporous, sponge-like solid surface. (chemistry2011.org)
  • With negligible difference in adsorption of other gases like nitrogen and hydrogen , they can also separate carbon dioxide from gas mixtures more selectively. (chemistry2011.org)
  • Therefore, we're considering other metal target forms that can be irradiated to generate the same diagnostic (molybdenum-99/technetium-99m) and potentially therapeutic (rhenium-186) radioisotopes at a lower cost to suppliers. (missouri.edu)
  • Can you share a case study where your radioisotope was involved in an accident or incident where there was harm to humans or the environment? (elitewritings.net)
  • In particular, I am interested in the mechanisms controlling carbon storage in soils and how plants and soil microbes interact in the nitrogen cycle. (bangor.ac.uk)