Minerals, Critical Minerals
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
TR-499: Indium Phosphide (CASRN 22398-80-7) in F344/N Rats And
NTP TECHNICAL REPORT ON THE TOXICOLOGY AND CARCINOGENESIS STUDIES OF INDIUM PHOSPHIDE (CAS NO. 22398-80-7) IN F344/N RATS AND B6C3F1 MICE (INHALATION STUDIES) NATIONAL TOXICOLOGY PROGRAM P.O. Box 12233 Research Triangle Park, NC 27709 July 2001 NTP TR 499 NIH Publication No. 01-4433 U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES Public Health Service National Institutes of Health FOREWORD The National Toxicology Program (NTP) is made up of four charter agencies of the U.S. Department of Health and Human Services (DHHS): the National Cancer Institute (NCI), National Institutes of Health; the National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health; the National Center for Toxicological Research (NCTR), Food and Drug Administration; and the National Institute for Occupational Safety and Health (NIOSH), Centers for Disease Control and Prevention. In July 1981, the Carcinogenesis Bioassay Testing Program, NCI, was transferred to the NIEHS. The NTP coordinates the relevant programs, staff, and resources from these Public Health Service agencies relating to basic and applied research and to biological assay development and validation. The NTP develops, evaluates, and disseminates scientific information about potentially toxic and hazardous chemicals. This knowledge is used for protecting the health of the American people and for the primary prevention of disease. The studies described in this Technical Report were performed under the direction of the NIEHS and were conducted in compliance with NTP laboratory health and safety requirements and must meet or exceed all applicable federal, state, and local health and safety regulations. Animal care and use were in accordance with the Public Health Service Policy on Humane Care and Use of Animals. -
Discovering Amorphous Indium Phosphide Nanostructures with High-Temperature Ab Initio Molecular Dynamics
Discovering Amorphous Indium Phosphide Nanostructures with High-Temperature ab Initio Molecular Dynamics The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation Zhao, Qing, Lisi Xie, and Heather J. Kulik. “Discovering Amorphous Indium Phosphide Nanostructures with High-Temperature Ab Initio Molecular Dynamics.” The Journal of Physical Chemistry C 119.40 (2015): 23238–23249. As Published http://dx.doi.org/10.1021/acs.jpcc.5b07264 Publisher American Chemical Society (ACS) Version Author's final manuscript Citable link http://hdl.handle.net/1721.1/105155 Terms of Use Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Discovering Amorphous Indium Phosphide Nanostructures with High-Temperature Ab Initio Molecular Dynamics Qing Zhao1,2, Lisi Xie1, and Heather J. Kulik1,* 1Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 2Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 ABSTRACT: We employ high-temperature ab initio molecular dynamics (AIMD) as a sampling approach to discover low-energy, semiconducting, indium phosphide nanostructures. Starting from under-coordinated models of InP (e.g. a single layer of InP(111)), rapid rearrangement into a stabilized, higher-coordinate but amorphous cluster is observed across the size range considered (In3P3 to In22P22). These clusters exhibit exponential decrease in energy per atom with system size as effective coordination increases, which we define through distance-cutoff coordination number assignment and partial charge analysis. The sampling approach is robust to initial configuration choice as consistent results are obtained when alternative crystal models or computationally efficient generation of structures from sequential addition and removal of atoms are employed. -
COMBINED LIST of Particularly Hazardous Substances
COMBINED LIST of Particularly Hazardous Substances revised 2/4/2021 IARC list 1 are Carcinogenic to humans list compiled by Hector Acuna, UCSB IARC list Group 2A Probably carcinogenic to humans IARC list Group 2B Possibly carcinogenic to humans If any of the chemicals listed below are used in your research then complete a Standard Operating Procedure (SOP) for the product as described in the Chemical Hygiene Plan. Prop 65 known to cause cancer or reproductive toxicity Material(s) not on the list does not preclude one from completing an SOP. Other extremely toxic chemicals KNOWN Carcinogens from National Toxicology Program (NTP) or other high hazards will require the development of an SOP. Red= added in 2020 or status change Reasonably Anticipated NTP EPA Haz list COMBINED LIST of Particularly Hazardous Substances CAS Source from where the material is listed. 6,9-Methano-2,4,3-benzodioxathiepin, 6,7,8,9,10,10- hexachloro-1,5,5a,6,9,9a-hexahydro-, 3-oxide Acutely Toxic Methanimidamide, N,N-dimethyl-N'-[2-methyl-4-[[(methylamino)carbonyl]oxy]phenyl]- Acutely Toxic 1-(2-Chloroethyl)-3-(4-methylcyclohexyl)-1-nitrosourea (Methyl-CCNU) Prop 65 KNOWN Carcinogens NTP 1-(2-Chloroethyl)-3-cyclohexyl-1-nitrosourea (CCNU) IARC list Group 2A Reasonably Anticipated NTP 1-(2-Chloroethyl)-3-cyclohexyl-1-nitrosourea (CCNU) (Lomustine) Prop 65 1-(o-Chlorophenyl)thiourea Acutely Toxic 1,1,1,2-Tetrachloroethane IARC list Group 2B 1,1,2,2-Tetrachloroethane Prop 65 IARC list Group 2B 1,1-Dichloro-2,2-bis(p -chloropheny)ethylene (DDE) Prop 65 1,1-Dichloroethane -
The London School of Economics and Political Science Mining
The London School of Economics and Political Science Mining Enterprises and Regional Economic Development: An Exploratory Analysis of the Sustainable Development Model Nicolas Di Boscio Thesis submitted to the London School of Economics for the degree of Doctor of Philosophy London, March 2010 Declaration I certify that this thesis is solely my own work other than where I have clearly indicated that it is the work of others. The copyright of this thesis rests with the author. Quotation from it is permitted, provided that full acknowledgement is made. This thesis may not be reproduced without the prior written consent of the author. I warrant that this authorization does not, as far as I know, infringe the rights of any third party. I wish to extend my thanks to Rio Tinto for the data and material provided and for their support throughout the investigation. As a Rio Tinto employee at the time of writing, I declare that no attempt to interfere with this work or to influence the results of this research has been made by the company or any of its employees. All the views and conclusions put forward are solely my own and do not necessarily represent those of the corporation. 1 Table of contents Abstract ....................................................................................................................... 11 Introduction ................................................................................................................ 12 Chapter 1 - New developments in growth theory .................................................. -
Annual Report 2020
In pursuit of progress since Annual report 2020 report Annual Annual report 2020 In pursuit of progress since Annual report 2020 report Annual Annual report 2020 CONTENTS ANNUAL REPORT STRATEGIC REPORT 2 Five-year summary 3 Group overview 4 From the chairman 6 From the chief executive 8 From the editor 9 Business review: the year in detail 13 The Economist Educational Foundation 15 The Economist Group and environmental sustainability 17 Corporate governance: the Wates Principles, our Section 172(1) statement and our guiding principles REPORT AND ACCOUNTS GOVERNANCE 22 Directors 23 Executive team 24 Trustees, board committees 25 Directors’ report 28 Directors’ report on remuneration 31 Financial review CONSOLIDATED FINANCIAL STATEMENTS 35 Independent auditor’s report to the members of The Economist Newspaper Limited 38 Consolidated income statement 39 Consolidated statement of comprehensive income 40 Consolidated balance sheet 41 Consolidated statement of changes in equity 42 Consolidated cashflow statement 44 Notes to the consolidated financial statements COMPANY FINANCIAL STATEMENTS 94 Company balance sheet 95 Company statement of changes in equity 96 Notes to the company financial statements NOTICES 108 Notice of annual general meeting 1 STRATEGIC REPORT Five-year summary 2020 2019 2018 2017 2016 £m £m £m £m £m Income statement—continuing business* Revenue 326 333 329 303 282 Operating profit 31 31 38 43 47 Profit after taxation 21 25 28 39 37 Profit on sale of CQ-Roll Call, Inc - 43 - - - Profit on sale of Economist Complex - - - - -
Working Paper No. 163
Working Paper No. 163 Liberation technology: Mobile phones and political mobilization in Africa by Marco Manacorda and Andrea Tesei | April 2016 1 Afrobarometer Working Papers Working Paper No. 163 Liberation technology: Mobile phones and political mobilization in Africa by Marco Manacorda and Andrea Tesei | April 2016 Marco Manacorda is a professor at Queen Mary University of London, a CEP (LSE) research associate, and a CEPR research fellow. Email: [email protected]. Andrea Tesei is a lecturer at Queen Mary University of London and a CEP (LSE) research associate. Email: [email protected]. Abstract Can digital information and communication technology (ICT) foster mass political mobilization? We use a novel geo-referenced dataset for the entire African continent between 1998 and 2012 on the coverage of mobile phone signal together with geo-referenced data from multiple sources on the occurrence of protests and on individual participation in protests to bring this argument to empirical scrutiny. We find that mobile phones are instrumental to mass mobilization during economic downturns, when reasons for grievance emerge and the cost of participation falls. Estimated effects are if anything larger once we use an instrumental variable approach that relies on differential trends in coverage across areas with different incidence of lightning strikes. The results are in line with insights from a network model with imperfect information and strategic complementarities in protest provision. Mobile phones make individuals more responsive to both changes in economic conditions – a mechanism that we ascribe to enhanced information – and to their neighbours’ participation – a mechanism that we ascribe to enhanced coordination. -
US Schedule for Internet V2
Draft as of March 23, 2007 Subject to legal review for accuracy, clarity and consistency. Annex 3.3 - - Industrial/Textile Schedule for the United States Tariff Elimination US 8 digit Description MFN RATE Schedule 03011000 Live ornamental fish Free I 03019100 Live trout Free I 03019200 Live eels Free I 03019300 Live carp Free I 03019900 Live fish, other than trout, eel, carp or ornamental fish Free I 03021100 Trout, fresh or chilled, excluding fillets, other meat portions, livers and roes Free I Pacific, Atlantic and Danube salmon, fresh or chilled, excluding fillets, other 03021200 meat portions, livers and roes Free I Salmonidae other than trout or Pacific, Atlantic & Danube salmon, fresh or 03021900 chilled, excluding fillets, other meat portions, livers & roes Free I Halibut and Greenland turbot, fresh or chilled, excluding fillets, other meat 03022100 portions, livers and roes Free I 03022200 Plaice, fresh or chilled, excluding fillets, other meat portions, livers and roes Free I 03022300 Sole, fresh or chilled, excluding fillets, other meat portions, livers and roes 1.1 cents/kg A Flat fish, nesi, fresh or chilled, excluding fillets, other meat portions, livers 03022900 and roes Free I Albacore or longfinned tunas, fresh or chilled, excluding fillets, other meat 03023100 portions, livers and roes Free I Yellowfin tunas, fresh or chilled, excluding fillets, other meat portions, livers 03023200 and roes Free I Skipjack or stripe-bellied bonito, fresh or chilled, excluding fillets, other meat 03023300 portions, livers and roes Free -
Undermining the Rights and Safety of Workers
Dirty Metals Undermining the Rights and Safety of Workers Mineworker in South Africa / n October 9, 2003, the south face of the Grasberg gold mine in West Papua, Indonesia, collapsed. OEight workers died and five others were injured. Government investigators turned up evidence that in the days leading up to the accident, seismic data had led mine operators to suspect that slippage was immi- nent, and that key machinery—but not workers—had been moved from below the unstable zone. These were not the first deaths at the Grasberg mine, the largest open-pit gold mine in the world. In May 2000, a landslide at the mine’s waste dump claimed four lives, prompting environmentalists and government Photo: ICEM officials to question the safety of recent production increases.46 In 1983, the chief safety engineer of an unnamed South Rock falls, tunnel collapses, fires, heat exhaustion, and African mining corporation told the Economist that “produc- other dangers claim the lives of over 15,000 miners every tion is more important than safety.” No one in a similar posi- year. (Miners in the notoriously dangerous coal mines of tion would go on record with such a statement today. And it China may account for up to half of these deaths.) is true that over the past 20 years, health and safety condi- According to the International Labour Organization (ILO), tions have improved in large-scale corporate operations in deaths within the mining sector as a whole (both metals most countries. Between 1984 and 2001, for instance, the and coal) account for 5 percent of all worker deaths on the average annual death rate in South African gold mines fell job, even though the sector employs just under 1 percent of from 1.23 per 1,000 workers to 1.05 per 1,000, while the all workers worldwide. -
Study of Phosphorus Behaviour in Levitated Silicon-Iron Droplets
STUDY OF PHOSPHORUS BEHAVIOUR IN LEVITATED SILICON-IRON DROPLETS by Katherine Le A thesis submitted in conformity with the requirements for the degree of Master of Applied Science Department of Materials Science and Engineering University of Toronto © Copyright by Katherine Le 2016 ii Study of Phosphorus Behaviour in Levitated Si-Fe Droplets Katherine Le Master of Applied Science Department of Materials Science and Engineering University of Toronto 2016 Abstract While the treatment of relatively inexpensive ferrosilicon alloys is a potential refining route in order to generate solar grade silicon, phosphorus is one of the more difficult impurities to remove by conventional processing. In this project, electromagnetic levitation was used to investigate the dephosphorization of ferrosilicon alloy droplets exposed to H2-Ar gas mixtures under various experimental conditions including, refining time, temperature (1450°C-1720°C), H2-Ar gas concentrations and flow rate, iron alloying content, and initial phosphorus concentration. Reaction rates increased with higher refining times, temperatures, and H2 gas concentrations. With unknown parameters associated with the kinetics of gas phase reactions, the approach involved comparison of apparent activation energies derived for the chemical reaction and gas diffusion steps of the dephosphorization process. The phosphorus removal rate is thought to be controlled by the interfacial reaction step; further work is required to confirm this conclusion. iii Acknowledgements I would like to express my gratitude and respect to my supervisor, Prof. Alex McLean for the opportunity to work on this research. I am thankful for his guidance, wisdom and encouragement throughout the course of my studies. He is a truly inspiring person, and a great enabler of new learning opportunities. -
Press Release
The Economist Intelligence Unit 20 Cabot Square London E14 4QW Telephone 020 7576 8000 Fax 020 7576 8500 www.eiu.com Press release Press enquiries Joanne McKenna: +44 (0)20 7576 8188 or [email protected] For immediate release: Asking better questions of data boosts performance, says Economist Intelligence Unit report An ability to ask better questions of data is central to driving better business outcomes, according to In search of insight and foresight: Getting more out of big data, an Economist Intelligence Unit report, sponsored by Oracle and Intel. According to a global EIU survey for this report, the vast majority of executives agree that asking better questions of data has already improved their organisation’s performance and will continue to lift it in the coming years. Nevertheless, many companies struggle to use data to gain insight into their business—and foresight into how best to move it forward. Lessons from successful firms reveal that achieving insight and foresight requires crafting savvy questions that test smart hypotheses, both of which are best fostered by open corporate cultures that prize data and its exploration. Other key findings include: • Focusing on a business outcome is crucial, yet a struggle for most companies. Defining, agreeing on and gearing data analyses towards clear, specific and relevant business objectives is difficult for many companies and a critical obstacle to translating data into insights, results and competitive advantage. Executives overwhelmingly consider predictions (70%) the most critical type of data insight for C-level decisions, followed by insights into trends (43%). • The main challenges are people-related. -
Binary and Ternary Transition-Metal Phosphides As Hydrodenitrogenation Catalysts
Research Collection Doctoral Thesis Binary and ternary transition-metal phosphides as hydrodenitrogenation catalysts Author(s): Stinner, Christoph Publication Date: 2001 Permanent Link: https://doi.org/10.3929/ethz-a-004378279 Rights / License: In Copyright - Non-Commercial Use Permitted This page was generated automatically upon download from the ETH Zurich Research Collection. For more information please consult the Terms of use. ETH Library Diss. ETH No. 14422 Binary and Ternary Transition-Metal Phosphides as Hydrodenitrogenation Catalysts A dissertation submitted to the Swiss Federal Institute of Technology Zurich for the degree of Doctor of Natural Sciences Presented by Christoph Stinner Dipl.-Chem. University of Bonn born February 27, 1969 in Troisdorf (NRW), Germany Accepted on the recommendation of Prof. Dr. Roel Prins, examiner Prof. Dr. Reinhard Nesper, co-examiner Dr. Thomas Weber, co-examiner Zurich 2001 I Contents Zusammenfassung V Abstract IX 1 Introduction 1 1.1 Motivation 1 1.2 Phosphides 4 1.2.1 General 4 1.2.2 Classification 4 1.2.3 Preparation 5 1.2.4 Properties 12 1.2.5 Applications and Uses 13 1.3 Scope of the Thesis 14 1.4 References 16 2 Characterization Methods 1 2.1 FT Raman Spectroscopy 21 2.2 Thermogravimetric Analysis 24 2.3 Temperature-Programmed Reduction 25 2.4 X-Ray Powder Diffractometry 26 2.5 Nitrogen Adsorption 28 2.6 Solid State Nuclear Magnetic Resonance Spectroscopy 28 2.7 Catalytic Test 33 2.8 References 36 3 Formation, Structure, and HDN Activity of Unsupported Molybdenum Phosphide 37 3.1 Introduction -
Red-Light Leds for Next-Generation Displays 6 July 2020
Red-light LEDs for next-generation displays 6 July 2020 indium gallium nitride (InGaN) semiconductors. Integrating two material systems is difficult. "Creating RGB displays requires the mass transfer of the separate blue, green and red LEDs together," says KAUST researcher Zhe Zhuang. An easier solution would be to create different-colored LEDs all on a single semiconductor chip. Optimizing the geometry, fabrication and electrical contacts is vital to maximizing the efficiency of the LED. Credit: Zhuag et al. Novel red LEDs are more temperature stable than those made using the conventional semiconductor of choice. In efforts to optimize the performance of light- emitting diodes (LEDs), King Abdullah University of Science and Technology researchers are looking at every aspect of the design, fabrication and operation of these devices. Now, they have succeeded in fabricating red LEDs, based on the The team developed an InGaN red LED structure where naturally blue-emitting semiconductor indium the output power is more stable than that of InGaP red gallium nitride, that are as stable as those based LEDs. Credit: Zhe Zhuang on indium gallium phosphide. LEDs are optical sources made from semiconductors that offer improvements on Since InGaP semiconductors are unable to emit conventional visible-light sources in terms of blue or green light, the only solution to making energy saving, smaller size and longer lifetimes. monolithic RGB micro-LEDs is to use InGaN. This LEDs can emit across the spectrum, from the material has the potential to shift its emission from ultraviolet to blue (B), green (G), red (R) and into blue to green, yellow and red by introducing more the infrared.