The Periodic Table Kit Lesson Plan
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Treatment Outcome Following Use of the Erbium, Chromium:Yttrium
Treatment outcome following use IN BRIEF • Highlights that successful treatment RESEARCH of peri-implantitis is unpredictable and of the erbium, chromium:yttrium, usually involves the need for surgery. • Outlines a minimalistic treatment approach for peri-implantitis with promising results after six months. scandium, gallium, garnet laser • Suggests that the protocol described may be of use in a pilot study or controlled in the non-surgical management clinical trial. of peri-implantitis: a case series R. Al-Falaki,*1 M. Cronshaw2 and F. J. Hughes3 VERIFIABLE CPD PAPER Aim To date there is no consensus on the appropriate usage of lasers in the management of peri-implantitis. Our aim was to conduct a retrospective clinical analysis of a case series of implants treated using an erbium, chromium:yttrium, scandium, gallium, garnet laser. Materials and methods Twenty-eight implants with peri-implantitis in 11 patients were treated with an Er,Cr:YSGG laser (68 sites >4 mm), using a 14 mm, 500 μm diameter, 60º (85%) radial firing tip (1.5 W, 30 Hz, short (140 μs) pulse, 50 mJ/pulse, 50% water, 40% air). Probing depths were recorded at baseline after 2 months and 6 months, along with the presence of bleeding on probing. Results The age range was 27-69 years (mean 55.9); mean pocket depth at baseline was 6.64 ± SD 1.48 mm (range 5-12 mm),with a mean residual depth of 3.29 ± 1.02 mm (range 1-6 mm) after 2 months, and 2.97 ± 0.7 mm (range 1-9 mm) at 6 months. -
Evolution and Understanding of the D-Block Elements in the Periodic Table Cite This: Dalton Trans., 2019, 48, 9408 Edwin C
Dalton Transactions View Article Online PERSPECTIVE View Journal | View Issue Evolution and understanding of the d-block elements in the periodic table Cite this: Dalton Trans., 2019, 48, 9408 Edwin C. Constable Received 20th February 2019, The d-block elements have played an essential role in the development of our present understanding of Accepted 6th March 2019 chemistry and in the evolution of the periodic table. On the occasion of the sesquicentenniel of the dis- DOI: 10.1039/c9dt00765b covery of the periodic table by Mendeleev, it is appropriate to look at how these metals have influenced rsc.li/dalton our understanding of periodicity and the relationships between elements. Introduction and periodic tables concerning objects as diverse as fruit, veg- etables, beer, cartoon characters, and superheroes abound in In the year 2019 we celebrate the sesquicentennial of the publi- our connected world.7 Creative Commons Attribution-NonCommercial 3.0 Unported Licence. cation of the first modern form of the periodic table by In the commonly encountered medium or long forms of Mendeleev (alternatively transliterated as Mendelejew, the periodic table, the central portion is occupied by the Mendelejeff, Mendeléeff, and Mendeléyev from the Cyrillic d-block elements, commonly known as the transition elements ).1 The periodic table lies at the core of our under- or transition metals. These elements have played a critical rôle standing of the properties of, and the relationships between, in our understanding of modern chemistry and have proved to the 118 elements currently known (Fig. 1).2 A chemist can look be the touchstones for many theories of valence and bonding. -
Book by Marshall Brickman and Rick Elice Music And
BOOK BY MARSHALL BRICKMAN AND RICK ELICE MUSIC AND LYRICS BY ANDREW LIPPA BASED ON CHARACTERS CREATED BY CHARLES ADDAMS ORIGINALLY PRODUCED ON BROADWAY BY STUART OKEN, ROY FURMAN, MICHAEL LEAVITT, FIVE CENT PRODUCTIONS, STEPHEN SCHULER, DECCA THEATRICALS, SCOTT M. DELMAN, STUART DITSKY, TERRY ALLEN KRAMER, STEPHANIE P. MCCLELLAND, JAMES L. NEDERLANDER, EVA PRICE, JAM THEATRICALS/MARY LUROFFE, PITTSBURGH CLO/GUTTERMAN-SWINSKY, VIVEK TIWARY/GARY KAPLAN, THE WEINSTEIN COMPANY/CLARENCE, LLC, ADAM ZOTOVICH/TRIBE THEATRICALS BY SPECIAL ARRANGEMENT WITH ELEPHANT EYE THEATRICAL DIRECTED BY LAURA NEGRAEFF MUSIC DIRECTION BY SHAUN BZDEL & ANDREW LINSLEY CHOREOGRAPHY BY MEGHAN MCDONALD THE ADDAMS FAMILY A NEW MUSICAL is presented through special arrangement with and all authorized performance materials are supplied by Theatrical Rights Worldwide 1180 Avenue of the Americas, Suite 640, New York, NY 10036. www.theatricalrights.com It is with gratitude and humility that Saskatoon Summer Players acknowledges that we create and perform on Treaty Six Territory which is the traditional territory of many First Nations and is the homeland of the Metis. In particularly difficult times such as these, we are thankful for the support of the businesses and granting organizations who stand with arts organizations like Saskatoon Summer Players to ensure that the show goes on. We offer our sincere thanks to these organizations. This production would not have been possible without the generous support of our community partners. They have helped us when we needed access to space, equipment, and expertise. We are eternally grateful for their generosity and for their commitment to making theatre happen in our community at this difficult time. -
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 -
Tracer Applications of Noble Gas Radionuclides in the Geosciences
To be published in Earth-Science Reviews Tracer Applications of Noble Gas Radionuclides in the Geosciences (August 20, 2013) Z.-T. Lua,b, P. Schlosserc,d, W.M. Smethie Jr.c, N.C. Sturchioe, T.P. Fischerf, B.M. Kennedyg, R. Purtscherth, J.P. Severinghausi, D.K. Solomonj, T. Tanhuak, R. Yokochie,l a Physics Division, Argonne National Laboratory, Argonne, Illinois, USA b Department of Physics and Enrico Fermi Institute, University of Chicago, Chicago, USA c Lamont-Doherty Earth Observatory, Columbia University, Palisades, New York, USA d Department of Earth and Environmental Sciences and Department of Earth and Environmental Engineering, Columbia University, New York, USA e Department of Earth and Environmental Sciences, University of Illinois at Chicago, Chicago, IL, USA f Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, USA g Center for Isotope Geochemistry, Lawrence Berkeley National Laboratory, Berkeley, USA h Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland i Scripps Institution of Oceanography, University of California, San Diego, USA j Department of Geology and Geophysics, University of Utah, Salt Lake City, USA k GEOMAR Helmholtz Center for Ocean Research Kiel, Marine Biogeochemistry, Kiel, Germany l Department of Geophysical Sciences, University of Chicago, Chicago, USA Abstract 81 85 39 Noble gas radionuclides, including Kr (t1/2 = 229,000 yr), Kr (t1/2 = 10.8 yr), and Ar (t1/2 = 269 yr), possess nearly ideal chemical and physical properties for studies of earth and environmental processes. Recent advances in Atom Trap Trace Analysis (ATTA), a laser-based atom counting method, have enabled routine measurements of the radiokrypton isotopes, as well as the demonstration of the ability to measure 39Ar in environmental samples. -
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. -
The Addams Family” Information Night
“The Addams Family” Information Night May 22 – 7:30 p.m. @ Christ Church (1700 Mazo Crescent, Mississauga) Book by MARSHALL BRICKMAN and RICK ELICE Music and Lyrics by ANDREW LIPPA Based on Characters Created by Charles Addams THE ADDAMS FAMILY features an original story, and it’s every father’s nightmare. Wednesday Addams, the ultimate princess of darkness, has grown up and fallen in love with Lucas Beineke, a sweet, smart young man from a respectable family – a man her parents (Mal and Alice) have never met. And if that weren’t upsetting enough, Wednesday confides in her father and begs him not to tell her mother. Now, Gomez Addams must do something he’s never done before – keep a secret from his beloved wife, Morticia. Meanwhile, Fester will not allow the Family Ancestors back into the crypt until love triumphs. Things get worse when the rest of the household (Grandma, Lurch, Pugsley) get involved in a “Full Disclosure” of more zany misadventures. Everything will change for both families on this one fateful night. Original music includes: “When You’re an Addams”, Tango de Amor”, The Moon” and, of course, “The Addams Family Theme song”. Join us, for a creepy, spooky and all together “ooky” good time. We really are a scream, The Addams Family! Presented in cooperation with Theatrical Rights Worldwide Producers Rita Ferguson, Christine McMahon, Susan Wray Toogood Artistic Director Rob Gorican Choreographer Bob Riddell Music Director Jenny Peace Stage Manager John Dalgleish Set Designer Bruce Brown Costumes Alex Amini Lights Jim Smagata Props Chris Filippelli Sound Greg Salisbury pg. -
Chemical Behavior of Iodine-131 During the SRE Fuel Element
Chemical Behavior of Iodine- 13 1 during SRE Fuel Element Damage in July 1959 Response to Plaintiffs Expert Witness Arjun Makhijani by Jerry D. Christian, Ph.D. Prepared for in re Boeing Litigation May 26,2005 Background of Jerry D. Christian Education: B. S. Chemistry, University of Oregon, 1959. Ph. D. Physical Chemistry, University of Washington, 1965 - Specialty in Chemical Thermodynamics and Vaporization Processes of Halogen Salts. (Iodine is a halogen.) Postdoctoral: National Research Council Senior Research Associate, NASA Ames Research Center, Moffett Field, CAY1972-1974. Career Summary: Scientific Fellow, Retired from Idaho National Engineering and Environmental Laboratory (INEEL), September 2001. Scientific Fellow is highest achievable technical ladder position at INEEL; charter member, appointed in January 1987. Consultant and President of Electrode Specialties Company since retirement. Affiliate Professor of Chemistry, University of Idaho; I teach a course in nuclear fuel reprocessing. Referee for Nuclear Technology and Talanta journals; I review submitted technical manuscripts for the editors for scientific and technical validity and accuracy.* I have thirty nine years experience in nuclear waste and fuel processing research and development. Included in my achievements is development of the highly successful classified Fluorine1 Dissolution Process for advanced naval fuels that was implemented in a new $250 million facility at the ICPP in the mid-1980s. Career interests and accomplishments have been in the areas of nuclear -
Of the Periodic Table
of the Periodic Table teacher notes Give your students a visual introduction to the families of the periodic table! This product includes eight mini- posters, one for each of the element families on the main group of the periodic table: Alkali Metals, Alkaline Earth Metals, Boron/Aluminum Group (Icosagens), Carbon Group (Crystallogens), Nitrogen Group (Pnictogens), Oxygen Group (Chalcogens), Halogens, and Noble Gases. The mini-posters give overview information about the family as well as a visual of where on the periodic table the family is located and a diagram of an atom of that family highlighting the number of valence electrons. Also included is the student packet, which is broken into the eight families and asks for specific information that students will find on the mini-posters. The students are also directed to color each family with a specific color on the blank graphic organizer at the end of their packet and they go to the fantastic interactive table at www.periodictable.com to learn even more about the elements in each family. Furthermore, there is a section for students to conduct their own research on the element of hydrogen, which does not belong to a family. When I use this activity, I print two of each mini-poster in color (pages 8 through 15 of this file), laminate them, and lay them on a big table. I have students work in partners to read about each family, one at a time, and complete that section of the student packet (pages 16 through 21 of this file). When they finish, they bring the mini-poster back to the table for another group to use. -
Chalcogenide-Bound Erbium Complexes: Paradigm Molecules for Infrared Fluorescence Emission
5130 Chem. Mater. 2005, 17, 5130-5135 Chalcogenide-Bound Erbium Complexes: Paradigm Molecules for Infrared Fluorescence Emission G. A. Kumar and Richard E. Riman* Department of Ceramic & Material Engineering, The State UniVersity of New Jersey, 607 Taylor Road, Piscataway, New Jersey 08854-8065 L. A. Diaz Torres and O. Barbosa Garcia Centro de InVestigaciones en Optica, Leon Gto., Mexico City 37150, Mexico Santanu Banerjee, Anna Kornienko, and John G. Brennan Department of Chemistry and Chemical Biology, Rutgers, The State UniVersity of New Jersey, 607 Taylor Road, Piscataway, New Jersey 08854-8087 ReceiVed April 11, 2005. ReVised Manuscript ReceiVed June 23, 2005 The near-infrared luminescence properties of the nanoscale erbium ceramic cluster (THF)14Er10S6- Se12I6 (Er10, where THF ) tetrahydrofuran) and the molecular erbium thiolate (DME)2Er(SC6F5)3 (Er1, where DME ) 1,2-dimethoxyethane) were studied by optical absorption, photoluminescence, and 4 4 vibrational spectroscopy. The calculated radiative decay time of 4 ms for the I13/2 f I15/2 transition is comparable to the reported values for previously reported organic complexes. The recorded emission 4 4 spectrum of the I13/2 f I15/2 transition was centered at 1544 nm with a bandwidth of 61 and 104 nm for Er10 and Er1, respectively, with stimulated emission cross sections of 1.3 × 10-20 cm2 (Er10) and 0.8 × 10-20 cm2 (Er1) that are comparable to those of solid-state inorganic systems. Lifetime measurements of the 1544 nm decay showed a fluorescence decay time of the order of 3 ms for Er10 that, together with the radiative decay time, yielded a quantum efficiency above 78%, which is considered to be the highest reported value for a “molecular” erbium compound. -
Audition Notice for the Village Youth Theater's Production Of
Audition Notice for the Village Youth Theater’s Production of Book by: Marshall Brickman Book by: Rick Elice Music & Lyrics by: Andrew Lippa Produced with permission from TRW Audition Date: Saturday, March 24, Two Sessions. Check in starting at 9:00 a.m., auditions begin at 9:30, Or, Check in starting at noon, auditions begin at 12:30. Callbacks will be held EITHER Saturday, March 24, starting about 2:00 OR Monday, March 26 from 4 – 6. We will announce on Saturday, March 24 when callbacks will be held. Audition/Callback Location: The Playhouse of the Village Players, 34660 Woodward Ave., Birmingham. Audition Requirements: All actors should recite a one-minute monologue that demonstrates your acting skills. Memorization is preferred as that will allow you perform without holding a sheet of paper. Music Cuts - Audition music cuts are attached to this notice. Be prepared to sing the cuts for the roles in which you are interested. Cuts are as follows (songs, role and start and stop markings are indicated): Chorus Only – The Addams Family Theme All Leads (be familiar with harmonies) – Crazier Than you Wednesday – Crazier Than You Lucas – Crazier Than You Gomez – Happy Sad Fester – The Moon and Me Morticia – Just Around the Corner Alice – Waiting Puglsey – What If All Auditioners - One Normal Night Wednesday – Pulled Show Dates – June 21 – 24, Two shows on Saturday, June 23. Matinee on Sunday, June 24. Additionally, all cast members and one family member must stay to strike on Sunday, June 24. Family members are also required to volunteer for two shows or dress rehearsals. -
Isotopic Composition of Fission Gases in Lwr Fuel
XA0056233 ISOTOPIC COMPOSITION OF FISSION GASES IN LWR FUEL T. JONSSON Studsvik Nuclear AB, Hot Cell Laboratory, Nykoping, Sweden Abstract Many fuel rods from power reactors and test reactors have been punctured during past years for determination of fission gas release. In many cases the released gas was also analysed by mass spectrometry. The isotopic composition shows systematic variations between different rods, which are much larger than the uncertainties in the analysis. This paper discusses some possibilities and problems with use of the isotopic composition to decide from which part of the fuel the gas was released. In high burnup fuel from thermal reactors loaded with uranium fuel a significant part of the fissions occur in plutonium isotopes. The ratio Xe/Kr generated in the fuel is strongly dependent on the fissioning species. In addition, the isotopic composition of Kr and Xe shows a well detectable difference between fissions in different fissile nuclides. 1. INTRODUCTION Most LWRs use low enriched uranium oxide as fuel. Thermal fissions in U-235 dominate during the earlier part of the irradiation. Due to the build-up of heavier actinides during the irradiation fissions in Pu-239 and Pu-241 increase in importance as the burnup of the fuel increases. The composition of the fission products varies with the composition of the fuel and the irradiation conditions. The isotopic composition of fission gases is often determined in connection with measurement of gases in the plenum of punctured fuel rods. It can be of interest to discuss how more information on the fuel behaviour can be obtained by use of information available from already performed determinations of gas compositions.