Creating a Multi-National Platform: Thorium Energy & Rare Earth Value
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10 NYCRR Part 16 Appendix a on Exemptions
APPENDIX 16-A TABLE 1 EXEMPTIONS Table 1-A. Radioactive Materials Item (a) Exempt concentrations. (1) Except as provided in paragraph (2) of this item, any person is exempt from the requirements of this Part to the extent that such person transfers, receives, possesses or uses products or materials containing radioactive material in concentrations not in excess of those listed in Table 2 of this Appendix. (2) No person may introduce radioactive material into a product or material knowing or having reason to believe that it will be transferred to persons exempt under paragraph (1) of this item or equivalent regulations of the United States Nuclear Regulatory Commission or any agreement State, except in accordance with specific license issued by the department or a similar license issued by the State Department of Labor, the New York City Department of Health, the United States Nuclear Regulatory Commission, any agreement State or the general license provided in item (h) of Table 6 of this Appendix. Item (b) Exempt quantities.1 (1) Except as provided in paragraphs (2) and (3) of this item, any person is exempt from the requirements of this Part to the extent that such person transfers, receives, possesses or uses radioactive material in individual quantities each of which does not exceed the applicable quantity set forth in Table 3 of this Appendix. (2) Any person who possesses radioactive material received prior to July 1, 1973, under the exemption formerly provided in section 16.101 of this Part is exempt from the requirements of this Part to the extent that such person transfers, receives, possesses or uses such radioactive material. -
Bioorganometallic Technetium and Rhenium Chemistry: Fundamentals for Applications
RadiochemistRy in switzeRland CHIMIA 2020, 74, No. 12 953 doi:10.2533/chimia.2020.953 Chimia 74 (2020) 953–959 © R. Alberto, H. Braband, Q. Nadeem Bioorganometallic Technetium and Rhenium Chemistry: Fundamentals for Applications Roger Alberto*, Henrik Braband, and Qaisar Nadeem Abstract: Due to its long half-life of 2.111×105 y, technetium, i.e. 99Tc, offers the excellent opportunity of combin- ing fundamental and ‘classical’ organometallic or coordination chemistry with all methodologies of radiochem- istry. Technetium chemistry is inspired by the applications of its short-lived metastable isomer 99mTc in molecular imaging and radiopharmacy. We present in this article examples about these contexts and the impact of purely basic oriented research on practical applications. This review shows how the chemistry of this element in the middle of the periodic system inspires the chemistry of neighboring elements such as rhenium. Reasons are given for the frequent observation that the chemistries of 99Tc and 99mTc are often not identical, i.e. compounds accessible for 99mTc, under certain conditions, are not accessible for 99Tc. The article emphasizes the importance of macroscopic technetium chemistry not only for research but also for advanced education in the general fields of radiochemistry. Keywords: Bioorganometallics · Molecular Imaging · Radiopharmacy · Rhenium · Technetium Roger Alberto obtained his PhD from the Qaisar Nadeem got his PhD from the ETH Zurich. He was an Alexander von University of the Punjab Lahore, Pakistan. Humboldt fellow in the group of W.A. He received the higher education commission Herrmann at the TU Munich and at the (HEC, Pakistan) fellowship during his PhD Los Alamos National Laboratory with and worked in theAlberto group, Department A Sattelberger. -
Historical Development of the Periodic Classification of the Chemical Elements
THE HISTORICAL DEVELOPMENT OF THE PERIODIC CLASSIFICATION OF THE CHEMICAL ELEMENTS by RONALD LEE FFISTER B. S., Kansas State University, 1962 A MASTER'S REPORT submitted in partial fulfillment of the requirements for the degree FASTER OF SCIENCE Department of Physical Science KANSAS STATE UNIVERSITY Manhattan, Kansas 196A Approved by: Major PrafeLoor ii |c/ TABLE OF CONTENTS t<y THE PROBLEM AND DEFINITION 0? TEH-IS USED 1 The Problem 1 Statement of the Problem 1 Importance of the Study 1 Definition of Terms Used 2 Atomic Number 2 Atomic Weight 2 Element 2 Periodic Classification 2 Periodic Lav • • 3 BRIEF RtiVJiM OF THE LITERATURE 3 Books .3 Other References. .A BACKGROUND HISTORY A Purpose A Early Attempts at Classification A Early "Elements" A Attempts by Aristotle 6 Other Attempts 7 DOBEREBIER'S TRIADS AND SUBSEQUENT INVESTIGATIONS. 8 The Triad Theory of Dobereiner 10 Investigations by Others. ... .10 Dumas 10 Pettehkofer 10 Odling 11 iii TEE TELLURIC EELIX OF DE CHANCOURTOIS H Development of the Telluric Helix 11 Acceptance of the Helix 12 NEWLANDS' LAW OF THE OCTAVES 12 Newlands' Chemical Background 12 The Law of the Octaves. .........' 13 Acceptance and Significance of Newlands' Work 15 THE CONTRIBUTIONS OF LOTHAR MEYER ' 16 Chemical Background of Meyer 16 Lothar Meyer's Arrangement of the Elements. 17 THE WORK OF MENDELEEV AND ITS CONSEQUENCES 19 Mendeleev's Scientific Background .19 Development of the Periodic Law . .19 Significance of Mendeleev's Table 21 Atomic Weight Corrections. 21 Prediction of Hew Elements . .22 Influence -
The Development of the Periodic Table and Its Consequences Citation: J
Firenze University Press www.fupress.com/substantia The Development of the Periodic Table and its Consequences Citation: J. Emsley (2019) The Devel- opment of the Periodic Table and its Consequences. Substantia 3(2) Suppl. 5: 15-27. doi: 10.13128/Substantia-297 John Emsley Copyright: © 2019 J. Emsley. This is Alameda Lodge, 23a Alameda Road, Ampthill, MK45 2LA, UK an open access, peer-reviewed article E-mail: [email protected] published by Firenze University Press (http://www.fupress.com/substantia) and distributed under the terms of the Abstract. Chemistry is fortunate among the sciences in having an icon that is instant- Creative Commons Attribution License, ly recognisable around the world: the periodic table. The United Nations has deemed which permits unrestricted use, distri- 2019 to be the International Year of the Periodic Table, in commemoration of the 150th bution, and reproduction in any medi- anniversary of the first paper in which it appeared. That had been written by a Russian um, provided the original author and chemist, Dmitri Mendeleev, and was published in May 1869. Since then, there have source are credited. been many versions of the table, but one format has come to be the most widely used Data Availability Statement: All rel- and is to be seen everywhere. The route to this preferred form of the table makes an evant data are within the paper and its interesting story. Supporting Information files. Keywords. Periodic table, Mendeleev, Newlands, Deming, Seaborg. Competing Interests: The Author(s) declare(s) no conflict of interest. INTRODUCTION There are hundreds of periodic tables but the one that is widely repro- duced has the approval of the International Union of Pure and Applied Chemistry (IUPAC) and is shown in Fig.1. -
Thermophysical Properties of the Lanthanide Sesquisulfides. III
Thermophysical properties of the lanthanide sesquisulfides. Ill. Determlnatlon of Schgttky and lattice heat-capacity contributions of y-phase Sm,S, and evaluation of the thermophysical properties of the y-phase Ln,S, subset Roey Shaviv”) and Edgar F. Westrum, Jr. Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-105.5 John. B. Gruber Department of Physics,San JoseState University, San Jose, California 95192-0106 8. J. Beaudry and P. E. Palmer Ames Laboratory, Iowa State University, Ames, Iowa SOO1I-3020 (Received 18 October 1991;accepted 10 January 1992) We report the experimental heat capacity of y-phaseSm, S, and derived thermophysical properties at selectedtemperatures. The entropy, enthalpy increments, and Gibbs energy function are 21SOR, 3063R.K, and 11.23Rat 298.15K. The experimental heat capacity is made up of lattice and electronic (Schottky ) contributions. The lattice contribution is determined for all y-phaselanthanide sesquisulfides(Ln, S, ) using the Komada/Westrum model. The differencebetween the experimental heat capacity and the deducedlattice heat capacity is analyzed as the Schottky contribution. Comparisonsare made betweenthe calorimetric Schottky contributions and those determined basedon crystal-field electronic energy levels of Ln3 + ions in the lattice and betweenthe Schottky contributions obtained from the empirical volumetric priority approach and from the Komada/Westrum theoretical approach. Predictions for the thermophysical properties of y-phaseEu, S, and y-phasePm, S, (unavailable for experimental determination) are also presented. INTRODUCTION by the volumetric scheme’ for estimation of lattice heat ca- The first‘two papersin this series’**describe the experi- pacity was found to be useful-as it was for the bixbyite mental determination and the resolution of the heat capaci- sesquioxides.’ ties of La2S3,’ Ce,S,,’ Nd2S3,’ Gd,S,,’ Pr2S3,* Tb2S3,* The main task in the analysisof the heat-capacityvalues and Dy, S, (Ref. -
Soluble Lutetium (CASRN 7439-94-3)
EPA/690/R-18/003 | August 16, 2018 | FINAL Provisional Peer-Reviewed Toxicity Values for Stable (Nonradioactive) Soluble Lutetium (CASRN 7439-94-3) U.S. EPA Office of Research and Development National Center for Environmental Assessment, Superfund Health Risk Technical Support Center (Cincinnati, OH) EPA/690/R-18/003 FINAL 08-16-2018 Provisional Peer-Reviewed Toxicity Values for Stable (Nonradioactive) Soluble Lutetium (CASRN 7439-94-3) Superfund Health Risk Technical Support Center National Center for Environmental Assessment Office of Research and Development U.S. Environmental Protection Agency Cincinnati, OH 45268 AUTHORS, CONTRIBUTORS, AND REVIEWERS CHEMICAL MANAGER Scott C. Wesselkamper, PhD National Center for Environmental Assessment, Cincinnati, OH CONTRIBUTOR Chris Cubbison, PhD National Center for Environmental Assessment, Cincinnati, OH DRAFT DOCUMENT PREPARED BY SRC, Inc. 7502 Round Pond Road North Syracuse, NY 13212 PRIMARY INTERNAL REVIEWERS Paul G. Reinhart, PhD, DABT National Center for Environmental Assessment, Research Triangle Park, NC Q. Jay Zhao, PhD, DABT National Center for Environmental Assessment, Cincinnati, OH This document was externally peer reviewed under contract to: Eastern Research Group, Inc. 110 Hartwell Avenue Lexington, MA 02421-3136 Questions regarding the content of this PPRTV assessment should be directed to the U.S. EPA Office of Research and Development’s National Center for Environmental Assessment, Superfund Health Risk Technical Support Center (513-569-7300). ii Soluble Lutetium TABLE OF CONTENTS -
Three Related Topics on the Periodic Tables of Elements
Three related topics on the periodic tables of elements Yoshiteru Maeno*, Kouichi Hagino, and Takehiko Ishiguro Department of physics, Kyoto University, Kyoto 606-8502, Japan * [email protected] (The Foundations of Chemistry: received 30 May 2020; accepted 31 July 2020) Abstaract: A large variety of periodic tables of the chemical elements have been proposed. It was Mendeleev who proposed a periodic table based on the extensive periodic law and predicted a number of unknown elements at that time. The periodic table currently used worldwide is of a long form pioneered by Werner in 1905. As the first topic, we describe the work of Pfeiffer (1920), who refined Werner’s work and rearranged the rare-earth elements in a separate table below the main table for convenience. Today’s widely used periodic table essentially inherits Pfeiffer’s arrangements. Although long-form tables more precisely represent electron orbitals around a nucleus, they lose some of the features of Mendeleev’s short-form table to express similarities of chemical properties of elements when forming compounds. As the second topic, we compare various three-dimensional helical periodic tables that resolve some of the shortcomings of the long-form periodic tables in this respect. In particular, we explain how the 3D periodic table “Elementouch” (Maeno 2001), which combines the s- and p-blocks into one tube, can recover features of Mendeleev’s periodic law. Finally we introduce a topic on the recently proposed nuclear periodic table based on the proton magic numbers (Hagino and Maeno 2020). Here, the nuclear shell structure leads to a new arrangement of the elements with the proton magic-number nuclei treated like noble-gas atoms. -
Rounding up Lutetium Lars Öhrström Suspects That As Time Goes By, We May See More of Lutetium — the Last of the Lanthanoids
in your element Rounding up lutetium Lars Öhrström suspects that as time goes by, we may see more of lutetium — the last of the lanthanoids. e’ll always have Paris” Rick says motexafin (based on the ‘texaphyrins’), a “ to Ilsa in their final goodbye on sub-class of porphyrin-like macrocycles Wthe foggy airstrip of Casablanca with five instead of four nitrogen atoms in in the eponymous film. However, the an approximately planar ring. Motexafin question among chemists about the element lutetium, which features Lu3+ and two lutetium, named after Lutetia, as the French acetate counter-ions coordinated on either capital was known in Roman times, is not so side of the macrocycle, is potentially a good much about having it (it is more abundant photosensitizer in dynamic phototherapy than silver in the Earth’s crust), but rather and has been going through phase I trials where to place it on the map. against prostate cancer2. With its valence electron configuration Uses of the naturally occurring element [Xe]4f 146s25d1, element 71 seems to belong are otherwise scarce, but its isotope Lu-177 is to group 3, but we often see it placed at successfully used in experimental and clinical BRITTA LANGEN, BRITTA SWEDEN UNIVERSITY OF GOTHENBURG, the very end of the lanthanoid series. Its treatments against some severe cancers by downstairs neighbour lawrencium, for which Illustration of a radiolabelled somatostatin hooking it up to a tetraazacyclododecane- experimental data are much more difficult to analogue built using PyMOL (https://pymol.org) tetraacetate (DOTA) ligand grafted to obtain, is in the same ambiguous situation. -
Discovery of Cesium, Lanthanum, Praseodymium and Promethium Isotopes
Discovery of Cesium, Lanthanum, Praseodymium and Promethium Isotopes E. May, M. Thoennessen∗ National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA Abstract Currently, forty-one cesium, thirty-five lanthanum, thirty-two praseodymium, and thirty-one promethium, isotopes have been observed and the discovery of these isotopes is discussed here. For each isotope a brief synopsis of the first refereed publication, including the production and identification method, is presented. ∗Corresponding author. Email address: [email protected] (M. Thoennessen) Preprint submitted to Atomic Data and Nuclear Data Tables May 20, 2011 Contents 1. Introduction . 2 2. Discovery of 112−152Cs.................................................................................. 3 3. Discovery of 117−153La.................................................................................. 11 4. Discovery of 121−154Pr.................................................................................. 20 5. Discovery of 128−158Pm................................................................................. 27 6. Summary ............................................................................................. 35 References . 36 Explanation of Tables . 44 Table 1. Discovery of cesium, lanthanum, praseodymium and promethium isotopes. See page 44 for Explanation of Tables 45 1. Introduction The discovery of cesium, lanthanum, praseodymium and promethium isotopes is discussed as -
Lutathera, INN-Lutetium (177Lu) Oxodotreotide
ANNEX I SUMMARY OF PRODUCT CHARACTERISTICS 1 This medicinal product is subject to additional monitoring. This will allow quick identification of new safety information. Healthcare professionals are asked to report any suspected adverse reactions. See section 4.8 for how to report adverse reactions. 1. NAME OF THE MEDICINAL PRODUCT Lutathera 370 MBq/mL solution for infusion 2. QUALITATIVE AND QUANTITATIVE COMPOSITION One mL of solution contains 370 MBq of lutetium (177Lu) oxodotreotide at the date and time of calibration. The total amount of radioactivity per single dose vial is 7,400 MBq at the date and time of infusion. Given the fixed volumetric activity of 370 MBq/mL at the date and time of calibration, the volume of the solution is adjusted between 20.5 mL and 25.0 mL in order to provide the required amount of radioactivity at the date and time of infusion. Lutetium (177Lu) has a half-life of 6.647 days. Lutetium (177Lu) decays by β- emission to stable Hafnium (177Hf) with the most abundant β- (79.3%) having a maximum energy of 0.497 MeV. The average beta energy is approximately 0.13 MeV. Low gamma energy is also emitted, for instance at 113 keV (6.2%) and 208 keV (11%). Excipient with known effect Each mL of solution contains 0.14 mmol (3.2 mg) of sodium. For the full list of excipients, see section 6.1. 3. PHARMACEUTICAL FORM Solution for infusion. Clear, colourless to slightly yellow solution. 4. CLINICAL PARTICULARS 4.1 Therapeutic indications Lutathera is indicated for the treatment of unresectable or metastatic, progressive, well differentiated (G1 and G2), somatostatin receptor positive gastroenteropancreatic neuroendocrine tumours (GEP-NETs) in adults. -
Periodic Table 1 Periodic Table
Periodic table 1 Periodic table This article is about the table used in chemistry. For other uses, see Periodic table (disambiguation). The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic numbers (numbers of protons in the nucleus), electron configurations , and recurring chemical properties. Elements are presented in order of increasing atomic number, which is typically listed with the chemical symbol in each box. The standard form of the table consists of a grid of elements laid out in 18 columns and 7 Standard 18-column form of the periodic table. For the color legend, see section Layout, rows, with a double row of elements under the larger table. below that. The table can also be deconstructed into four rectangular blocks: the s-block to the left, the p-block to the right, the d-block in the middle, and the f-block below that. The rows of the table are called periods; the columns are called groups, with some of these having names such as halogens or noble gases. Since, by definition, a periodic table incorporates recurring trends, any such table can be used to derive relationships between the properties of the elements and predict the properties of new, yet to be discovered or synthesized, elements. As a result, a periodic table—whether in the standard form or some other variant—provides a useful framework for analyzing chemical behavior, and such tables are widely used in chemistry and other sciences. Although precursors exist, Dmitri Mendeleev is generally credited with the publication, in 1869, of the first widely recognized periodic table. -
China's Rare Earths Industry and Its Role in the International Market
U.S.-China Economic and Security Review Commission Staff Backgrounder China’s Rare Earths Industry and its Role in the International Market Lee Levkowitz, Policy Analyst Nathan Beauchamp-Mustafaga, Research Intern November 3, 2010 Introduction China produces 97 percent of the world’s rare earth elements, a key component in a large assortment of advanced military and civilian technologies. Increasing global demand and Chinese reductions in export quotas over the past six years have led to international concerns about future supply shortages. Although the United States currently is seeking alternative sources for rare earths, the Government Accountability Office has stated that it may take up to 15 years before the United States is able to rebuild its U.S.-sourced rare earth supply chain.1 In addition, China’s monopoly over rare earths has led to fears of China using its dominance as leverage to influence other nations’ foreign policies. The following backgrounder seeks to provide an overview of China’s rare earth industry and how it affects the United States. What Are Rare Earth Elements? Rare earth elements are a collection of 17 elements that are critical to civilian and military high technology applications. * Rare earth elements are distributed globally, with 36 percent of known reserves located in China, and 13 percent located in the United States. 2 Although reserves are abundant, it is difficult to find them in sufficient concentrations where they can be profitably mined and processed.3 After discovering a potential site to mine