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The article reports on the need for a long-term solutions to the sudden shortage to technetium-99M in the U.S. It states that patients in the U.S. received about 2.3 million doses of diagnostic radiopharmaceuticals annually in the past few years. The American Medical Isotopes Production Act if passed would mandate that within seven years of the bill's passing, there would be a U.S.-produced supply of critical medical isotopes.

The article offers information on Geotraces, a research program which aims to understand how the broad array of trace elements and isotopes in the ocean behave and how their behavior ultimately affects the global carbon cycle and climate. Chemical oceanographers need to characterize distributions of trace elements and isotopes in the ocean to establish a baseline for future comparison before human activities elicit further changes.

Reports on the emergence of biomedical and environmental applications for accelerator mass spectroscopy (AMS). Role of AMS in nutrition research; Measurement of the ratio between radioisotopes and stable isotopes; Removal of interferences with the same nominal mass-to-charge ratio as the radioisotope of interest.

Presents information on the language of isotope effects. Information on isotopes; Reference to a paper published in 1947; Details on what the paper said about isotopes; Identification of how isotopes coexist wit different elements; How it affects the natural world. INSETS: A man of many talents;A woman with a quick mind.

The article focuses on the technology of positron emission tomography (PET) which can help doctors and researchers capture detailed three-dimensional images of molecular processes occurring in the human body. A positron-emitting isotope or radiotracer is injected into patients or animals and record the radiation emitted with a PET scanner. Chemists design tracers containing fluorine-18 to mimic or target molecules or tissues in the body.

The article discusses the benefits of isotope clumping in study of Earth's environment and paleoclimate. Topics discussed include use of mass spectrometers in research works related to isotope clumping, difference in isotope clumping and isotope chemistry; a study by researchers Shuhei Ono and Daniel A. Stolper regarding models for microbial methane production. INSET: ISOTOPE CLUMPING 101.

A letter to the editor is presented in response to the article "Celebrating the Isotope" by George B. Kauffman in the December 2, 2013 issue.

Cites several data on the chemical elements einsteinium and fermium. Atomic masses; Radioactivity of the isotopes of both elements; Description of the appearance of both elements.

The article focuses on a report, which highlights that emission rates of helium has exceed by orders of magnitude the rate at which conventional wisdom indicates that isotope is created via decay of uranium and thorium in the crust of Earth.

The article presents information that the U.S. Government Accountability Office is seeking clarification from the U.S. Department of Energy regarding the setting of prices for the isotopes.

The article focuses on a study which produced medical imaging isotope technetium-99m from hospital cyclotrons. Researchers developed a method to produce technetium-99m that involved the preparation of solid targets of molybdenum-100 and bombardment with protons generated in a cyclotron. They concluded that their method provides hope to address medical imaging isotope shortages.

The article focuses on the different types of items of forensic or economic interest, whose origins can be pinpointed thorough isoscape analysis.

The article reports that House Energy and Commerce Committee submitted the H.R. 3276 Bill on October 14, 2009 regarding the supply of molybdenum-(Mo) 99 in U.S. for medical isotopes. The bill permits the domestic production of Mo along with the elimination of exporting process for uranium within seven years. Moreover, the bill entails a 163 million dollars fund to support the Department of Energy (DOE) in carrying out domestic production of Mo without the utilization of uranium.

The article offers news briefs related to laboratory technology. A 15 million dollar-contract was awarded to PerkinElmer Inc. for its rubidium atomic-frequency standards by the ITT Corp. Systems Divisions. Rigaku Corp. has unveiled its NEX CG, a new benchtop energy dispersive X-ray fluorescence spectrometer. Los Gatos Research has introduced its second-generation Liquid Water Isotope Analyzer that is base on cavity-enhanced laser measurements.

The article focuses on the water vapor isotope data, a valuable tool for an accurate climate modeling. An international research team led by Christian Frankenberg of the Netherlands Institute for Space Research collected the first water vapor isotope data obtained in the lower troposphere, where the majority of water vapor is found, with the use of satellite-based absorption spectroscopy. The researchers generated a global map revealing variations in atmospheric water vapor.

The article focuses on a study which shows that billion years old sulfur isotope signature in rocks might not have been caused by an oxygen-poor atmosphere. It notes that the 2.4 billion-year-old geological boundary has always been used to mark Earth's shift to an oxygen-rich atmosphere. It also discusses geochemistry professor Hiroshi Ohmoto and colleagues' study which suggests that the isotope signature were created by chemisorption processes and could be produced in an oxygenated environment.

The article discusses the asymmetric reaction produced by carbon isotope chirality. According to the study of Kenso Soai and colleagues of Tokyo University of Science in Japan, the addition of zinc alkoxide made from an isotopically substituted alcohol would result to the pyrimidyl alkanol product's enantiomeric excess. Accordingly, the excess would then become amplified due to asymmetric autocatalysis.

The article highlights the results of a chemical isotope analysis which reveal that the vast majority of beef and chicken served in fast-food eateries is raised on a diet of corn, and that corn oil is frequently used to cook fries. The isotope survey is the first study to demonstrate corn's central role in burgers and fries.

The article reports on the shortage of medical isotopes in Europe. According to the European Association of Nuclear Medicine, nuclear medicine clinics can no longer carry out a large part of their diagnostic and therapeutic activities due to the shortage of isotopes. The isotopes are used in over 80 percent of routine nuclear-imaging tests for procedures, including cardiac blood-flow imaging and bone scanning.

The article reports on the results of a study conducted by geochemist Thure E. Cerling and ecologist James R. Ehleringer which reveals that the isotope ratios of human hair correlate with the isotope ratios of local tap water and can be used to track where people have been. The information on isotope values in drinking water could be useful in forensic, anthropological and archaecological studies.

The article reports that a team of researchers at the National Superconducting Cyclotron Laboratory at Michigan State University have expanded the neutron drip lines of magnesium and aluminum by adding neutron-rich isotopes. A description of the experimental setup and measurement method is presented. According to the article, neutron drip line is the limiting number of neutrons that can be bound within an atomic nucleus.

The article features the new nuclear magnetic resonance spectroscopy technique which is useful to measure the dynamics of highly mobile amino acid in proteasome cavity. Invented by postdoc Remco Sprangers and biochemistry professor Lewis E. Kay of the University of Toronto, this technique involves two aspects including isotope-labeling scheme and transverse relaxation optimized spectroscopy.

Measures rutherfordium fluoride (Rf) distribution coefficients by a rapid chromatographic method. Examination of the relativistic molecular orbital calculations of isotopes; Analysis of the distribution coefficient for Rf on the ion-exchange column; Cause of electron configurations and oxidation states of heavier elements.

Focuses on the development of transactinides, a superheavy elements. Properties of superheavy nuclei; Measurement of the element's stability; Methods of accommodating the fraction-of-a-minute lifetimes of the available dubnium isotopes.

Cites several data on the chemical element hydrogen. Origin; Atomic mass; Appearance; Enumeration of hydrogen isotopes.

Focuses on the use of a stable-isotope labeling method for detecting toxic methylmercury in fish. Accumulation of organic and inorganic mercury by algae; Advisories about human consumption of fish; Plans to test the approach in lakes.