The Radiation Chemistry of Polysaccharides
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Synthesis of Terephthalic Acid Via Diels-Alder Reactions with Ethylene and Oxidized Variants of 5-Hydroxymethylfurfural
Synthesis of terephthalic acid via Diels-Alder reactions with ethylene and oxidized variants of 5-hydroxymethylfurfural Joshua J. Pacheco and Mark E. Davis1 Chemical Engineering, California Institute of Technology, Pasadena, CA 91125 Contributed by Mark E. Davis, May 7, 2014 (sent for review April 16, 2014) Terephthalic acid (PTA), a monomer in the synthesis of polyethylene can react to form PX in a one-pot Diels-Alder dehydration re- terephthalate (PET), is obtained by the oxidation of petroleum- action (7). This reaction has received much attention recently, derived p-xylene. There is significant interest in the synthesis of and it is catalyzed by homogeneous Lewis acids and a wide va- renewable, biomass-derived PTA. Here, routes to PTA starting riety of heterogeneous Brønsted acid-containing solids (7–12). from oxidized products of 5-hydroxymethylfurfural (HMF) that can Although nearly 100% PX yields from the Diels-Alder de- be produced from biomass are reported. These routes involve Diels- hydration reaction can be achieved, the reduction step to convert Alder reactions with ethylene and avoid the hydrogenation of HMF HMF to DMF requires expensive metal catalysts and a hydrogen to 2,5-dimethylfuran. Oxidized derivatives of HMF are reacted with source, making this route challenging to commercially imple- ethylene over solid Lewis acid catalysts that do not contain strong ment (13). Therefore, the discovery of routes to PTA from HMF Brønsted acids to synthesize intermediates of PTA and its equally that avoid any hydrogenation steps could be useful. important diester, dimethyl terephthalate (DMT). The partially oxi- An oxidation route to PTA that has previously been consid- dized HMF, 5-(hydroxymethyl)furoic acid (HMFA), is reacted with ered is the Diels-Alder dehydration reaction of ethylene with the high pressure ethylene over a pure-silica molecular sieve containing fully oxidized HMF, 2,5-furandicarboxylic acid (FDCA). -
Report of the Advisory Group to Recommend Priorities for the IARC Monographs During 2020–2024
IARC Monographs on the Identification of Carcinogenic Hazards to Humans Report of the Advisory Group to Recommend Priorities for the IARC Monographs during 2020–2024 Report of the Advisory Group to Recommend Priorities for the IARC Monographs during 2020–2024 CONTENTS Introduction ................................................................................................................................... 1 Acetaldehyde (CAS No. 75-07-0) ................................................................................................. 3 Acrolein (CAS No. 107-02-8) ....................................................................................................... 4 Acrylamide (CAS No. 79-06-1) .................................................................................................... 5 Acrylonitrile (CAS No. 107-13-1) ................................................................................................ 6 Aflatoxins (CAS No. 1402-68-2) .................................................................................................. 8 Air pollutants and underlying mechanisms for breast cancer ....................................................... 9 Airborne gram-negative bacterial endotoxins ............................................................................. 10 Alachlor (chloroacetanilide herbicide) (CAS No. 15972-60-8) .................................................. 10 Aluminium (CAS No. 7429-90-5) .............................................................................................. 11 -
Type of Ionising Radiation Gamma Rays Versus Electro
MY9700883 A National Seminar on Application of Electron Accelerators, 4 August 1994 INTRODUCTION TO RADIATION CHEMISTRY OF POLYMER Khairul Zaman Hj. Mohd Dahlan Nuclear Energy Unit What is Radiation Chemistry? Radiation Chemistry is the study of the chemical effects of ionising radiation on matter. The ionising radiation flux in a radiation field may be expressed in terms of radiation intensity (i.e the roentgen). The roentgen is an exposure dose rather than absorbed dose. For radiation chemist, it is more important to know the absorbed dose i.e. the amount of energy deposited in the materials which is expressed in terms of Rad or Gray or in electron volts per gram. The radiation units and radiation power are shown in Table 1 and 2 respectively. Type of Ionising Radiation Gamma rays and electron beam are two commonly used ionising radiation in industrial process. Gamma rays, 1.17 and 1.33 MeV are emitted continuously from radioactive source such as Cobalt-60. The radioactive source is produced by bombarding Cobalt-59 with neutrons in a nuclear reactor or can be produced from burning fuel as fission products. Whereas, electrons are generated from an accelerator to produce a stream of electrons called electron beam. The energy of electrons depend on the type of machines and can vary from 200 keV to 10 MeV. Gamma Rays versus Electron Beam Gamma rays are electromagnetic radiation of very short wavelength about 0.01 A (0.001 nm) for a lMeV photon. It has a very high penetration power. Whereas, electrons are negatively charge particles which have limited penetration power. -
Effect of Intake of Food Hydrocolloids of Bacterial Origin on the Glycemic Response in Humans: Systematic Review and Narrative Synthesis
nutrients Review Effect of Intake of Food Hydrocolloids of Bacterial Origin on the Glycemic Response in Humans: Systematic Review and Narrative Synthesis Norah A. Alshammari 1,2, Moira A. Taylor 3, Rebecca Stevenson 4 , Ourania Gouseti 5, Jaber Alyami 6 , Syahrizal Muttakin 7,8, Serafim Bakalis 5, Alison Lovegrove 9, Guruprasad P. Aithal 2 and Luca Marciani 2,* 1 Department of Clinical Nutrition, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia; [email protected] 2 Translational Medical Sciences and National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and University of Nottingham, Nottingham NG7 2UH, UK; [email protected] 3 Division of Physiology, Pharmacology and Neuroscience, School of Life Sciences, Queen’s Medical Centre, National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre, Nottingham NG7 2UH, UK; [email protected] 4 Precision Imaging Beacon, University of Nottingham, Nottingham NG7 2UH, UK; [email protected] 5 Department of Food Science, University of Copenhagen, DK-1958 Copenhagen, Denmark; [email protected] (O.G.); [email protected] (S.B.) 6 Department of Diagnostic Radiology, Faculty of Applied Medical Science, King Abdulaziz University (KAU), Jeddah 21589, Saudi Arabia; [email protected] 7 Indonesian Agency for Agricultural Research and Development, Jakarta 12540, Indonesia; Citation: Alshammari, N.A.; [email protected] Taylor, M.A.; Stevenson, R.; 8 School of Chemical Engineering, University of Birmingham, Birmingham B15 2TT, UK Gouseti, O.; Alyami, J.; Muttakin, S.; 9 Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK; [email protected] Bakalis, S.; Lovegrove, A.; Aithal, G.P.; * Correspondence: [email protected]; Tel.: +44-115-823-1248 Marciani, L. -
Mechanistic Studies of the Desorption Ionization
Mechanistic studies of the desorption ionization process in fast atom bombardment mass spectrometry by Jentaie Shiea A thesis submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Chemistry Montana State University © Copyright by Jentaie Shiea (1991) Abstract: The mechanisms involved in Desorption Ionization (DI) continue to be a very active area of research. The answer to the question of how involatile and very large molecules are transferred from the condensed phase to the gas phase has turned out to involve many different phenomena. The effect on Fast Atom Bombardment (FAB) mass spectra of the addition of acids to analyte bases has been quantitatively investigated. Generally, the pseudomolecular ion (M+H+) intensity increased with the addition of acid, however, decreases in ion intensity were also noted. For the practical use of FAB, it is important to clarify the reasons for this acid effect. By critical evaluation, a variety of different explanations were found. However, contrary to other studies, no unambiguous example was found in which the effect of "preformed ions" could adequately explain the observed results. The mechanistic implications of these findings are briefly discussed. The importance of surface activity in FAB has been pointed out by many researchers. A systematic study was conducted, involving the addition of negatively charged surfactants to samples containing small organic and inorganic cations. An enhancement of the positive ion spectra of these analytes was observed. The study of mass transport processes of two surfactants was performed by varying the analyte concentration and matrix temperature in FAB. The study of the desorption process in SIMS by varying the viscosity of the matrix solutions shows that such studies may help to bridge the mechanisms in solid and liquid SIMS and, in the process, increase our understanding of both techniques. -
Applications Received During 1 to 28 February, 2019
Applications received during 1 to 28 February, 2019 The publication is a list of applications received during 1 to 28 February, 2019. The said publication may be treated as a notice to every person who claims or has any interest in the subject matter of Copyright or disputes the rights of the applicant to it under Rule 70 (9) of Copyright Rules, 2013. Objections, if any, may be made in writing to copyright office by post or e-mail within 30 days of the publication. Even after issue of this notice, if no work/documents are received within 30 days, it would be assumed that the applicant has no work / document to submit and as such, the application would be treated as abandoned, without further notice, with a liberty to apply afresh. S.No. Diary No. Date Title of Work Category Applicant 1 1599/2019-CO/SW 01-02-2019 Play My Opinion ( i Phone Application) Computer Software Sanjay K Gupta 2 1600/2019-CO/L 01-02-2019 Black Literary/ Dramatic Hema Mathy Bernatsha 3 1601/2019-CO/L 01-02-2019 CAMP Literary/ Dramatic VISHNU IS 4 1602/2019-CO/L 01-02-2019 LAB MANUAL DESIGN AND ANALYSIS OF Literary/ Dramatic BHUSHAN BAWANKAR, Dr. M. M.Raghuwanshi ALGORITHM 5 1606/2019-CO/L 01-02-2019 GANIT CLASS 9 Literary/ Dramatic VIDYA PRAKASHAN MANDIR PVT LTD 6 1607/2019-CO/L 01-02-2019 GANIT CLASS 10 Literary/ Dramatic VIDYA PRAKASHAN MANDIR PVT LTD 7 1608/2019-CO/L 01-02-2019 SALONWAALE Literary/ Dramatic TRUNK LORD TECHNOLOGIES PRIVATE LIMITED 8 1609/2019-CO/L 01-02-2019 GANIT CLASS 11 Literary/ Dramatic VIDYA PRAKASHAN MANDIR PVT LTD 9 1610/2019-CO/L 01-02-2019 GANIT 12 Literary/ Dramatic VIDYA PRAKASHAN MANDIR PVT LTD 10 1611/2019-CO/A 01-02-2019 BLACK GOLD (BLACK HENNA) Artistic ASHOK KUMAR SETHI, TRADING AS: ABHINAV EXPORT CORPORATION. -
Sugar Utilization by Yeast During Fermentation
Journal of IndustriaI Microbiology, 4 (I989) 315-324 Elsevier 315 SIM00189 Sugar utilization by yeast during fermentation Tony D'Amore, Inge Russell and Graham G. Stewart Research Department, Labatt Brewing Company Limited, London, Ontario, Canada Received 8 August 1988 Accepted 16 December 1988 Key words: Sugar uptake; Yeast; Brewer's wort SUMMARY When glucose and fructose are fermented separately, the uptake profiles indicate that both sugars are utilized at similar rates. However, when fermentations are conducted in media containing an equal concentra- tion of glucose and fructose, glucose is utilized at approximately twice the rate of fructose. The preferential uptake of glucose also occurred when sucrose, which was first rapidly hydrolyzed into glucose and fructose by the action of the enzyme invertase, was employed as a substrate. Similar results were observed in the fer- mentation of brewer's wort and wort containing 30% sucrose and 30% glucose as adjuncts. In addition, the high levels of glucose in the wort exerted severe catabolite repression on maltose utilization in the Saccharo~ myces uvarum (carlsbergensis) brewing strain. Kinetic analysis of glucose and fructose uptake in Saccharo- myces cerevisiae revealed a Km of 1.6 mM for glucose and 20 mM for fructose. Thus, the yeast strain has a higher affinity for glucose than fructose. Growth on glucose or fructose had no repressible effect on the uptake of either sugar. In addition, glucose inhibited fructose uptake by 60% and likewise fructose inhibited glucose uptake by 40%. These results indicate that glucose and fructose share the same membrane transport compo- nents. INTRODUCTION transport systems [2,3]. -
A Possible Emergent Cause of Honey Bee Mortality? Lara Zirbes, Bach Kim Nguyen, Dirk C
Subscriber access provided by Université de Liège Review Hydroxymethylfurfural: a possible emergent cause of honey bee mortality? Lara Zirbes, Bach Kim Nguyen, Dirk C. de Graaf, Bruno De Meulenaer, Wim Paul Reybroeck, Eric Haubruge, and Claude Saegerman J. Agric. Food Chem., Just Accepted Manuscript • DOI: 10.1021/jf403280n • Publication Date (Web): 15 Oct 2013 Downloaded from http://pubs.acs.org on October 21, 2013 Just Accepted “Just Accepted” manuscripts have been peer-reviewed and accepted for publication. They are posted online prior to technical editing, formatting for publication and author proofing. The American Chemical Society provides “Just Accepted” as a free service to the research community to expedite the dissemination of scientific material as soon as possible after acceptance. “Just Accepted” manuscripts appear in full in PDF format accompanied by an HTML abstract. “Just Accepted” manuscripts have been fully peer reviewed, but should not be considered the official version of record. They are accessible to all readers and citable by the Digital Object Identifier (DOI®). “Just Accepted” is an optional service offered to authors. Therefore, the “Just Accepted” Web site may not include all articles that will be published in the journal. After a manuscript is technically edited and formatted, it will be removed from the “Just Accepted” Web site and published as an ASAP article. Note that technical editing may introduce minor changes to the manuscript text and/or graphics which could affect content, and all legal disclaimers and ethical guidelines that apply to the journal pertain. ACS cannot be held responsible for errors or consequences arising from the use of information contained in these “Just Accepted” manuscripts. -
Pullulan Handling/Processing 1 2 Identification of Petitioned Substance
United States Department of Agriculture Agricultural Marketing Service | National Organic Program Document Cover Sheet https://www.ams.usda.gov/rules-regulations/organic/national-list/petitioned Document Type: ☐ National List Petition or Petition Update A petition is a request to amend the USDA National Organic Program’s National List of Allowed and Prohibited Substances (National List). Any person may submit a petition to have a substance evaluated by the National Organic Standards Board (7 CFR 205.607(a)). Guidelines for submitting a petition are available in the NOP Handbook as NOP 3011, National List Petition Guidelines. Petitions are posted for the public on the NOP website for Petitioned Substances. ☒ Technical Report A technical report is developed in response to a petition to amend the National List. Reports are also developed to assist in the review of substances that are already on the National List. Technical reports are completed by third-party contractors and are available to the public on the NOP website for Petitioned Substances. Contractor names and dates completed are available in the report. Pullulan Handling/Processing 1 2 Identification of Petitioned Substance 3 Chemical Names: CAS Number: 4 5-[[3,4-dihydroxy-6-(hydroxymethyl)-5-[[3,4,5- 9057-02-7 5 trihydroxy-6-(methoxymethyl)oxan-2-yl] 6 methoxymethyl]oxan-2-yl]methoxymethyl]-6- EC/EINECS Number: 7 (hydroxymethyl)oxane-2,3,4-triol (IUPAC) 232-945-1 8 9 Other Name: Other Codes: 10 Pullulan [National Formulary] PubChem CID: 92024139 11 Polymaltotriose EPA Chem. Sub. Inventory Nos.: 1224323-71-0, 12 152743-43-6; 58252-16-7; 58391-35-8 13 Trade Name: INS No. -
Der Clunier Die Zeitschrift Der KMV Clunia Feldkirch Register
Der Clunier Die Zeitschrift der KMV Clunia Feldkirch Register Zusammengestellt von Mag. Michael Mittelstaedt Impressum: Das vorliegende Register wurde herausgegeben vom Erscheinungsort: Feldkirch, im April 2010 Inhalt: Mag. Michael Mittelstaedt v/o Souffleur, Rg, FlP, SO, EKG 2 Inhalt: Vorwort der Redaktion ............................................................................................................... 4 Vorwort des Autors .................................................................................................................... 5 Geschichte „Der Clunier“ ........................................................................................................... 6 Sachregister .............................................................................................................................. 12 fegister ...................................................................................................................................... 35 Verbindungen ......................................................................................................................... 177 a) Verbindungen nach Namen ........................................................................................ 177 b) Verbindungen nach Orten .......................................................................................... 189 Anzeigenregister ..................................................................................................................... 193 Zeitschriftenverzeichnis ........................................................................................................ -
NGO Directory
National Foundation for Health Progress and Research Development Centre Culturel d'Hussein-Day Africa 16000 Alger Algeria Phone: (213-21)2 31 655 Fax: (213-21) 23 1644 E-mail: [email protected] Contact: Mostefa KHIATI Title: President Founded in: 1990 ECOSOC : Special consultative status Drug Control Activities and Methods of Intervention: Prevention, education, counselling, research, training Repeated awareness raising campaigns Other Areas: Health, prevention of HIV/AIDS, solidarity, training National Foundation for Medical Research Cultural Centre of El-Biar Room 36 Africa El Biar, Algiers Algeria Phone: (213-2) 502 991 Fax: (213-2) 503 675 E-mail: Contact: Prof. Mustapha ACHOUI Title: President Founded in: 1980 ECOSOC : None Drug Control Activities and Methods of Intervention: Prevention, research and rehabilitation of drug abusers. Training of psychologists in prevention and rehabilitation techniques. Organizing and developing training systems. Target groups contacted with a few monographs. Other Areas: Research on various different medical cases. Page: 1 Movimento Nacional Vida Livre M.N.V.L. Av. Comandante Valodia No. 283, 2. And.P.24. Africa C.P. 3969 Angola, Rep. Of Luanda Phone: (244-2) 443 887 Fax: E-mail: Contact: Dr. Celestino Samuel Miezi Title: National Director, Professor Founded in: 1989 ECOSOC : Drug Control Activities and Methods of Intervention: Prevention, education, treatment, counselling, rehabilitation, training, and criminology To combat drugs and its consequences through specialized psychotherapy and detoxification Other Areas: Health, psychotherapy, ergo therapy Maison Blanche (CERMA) 03 BP 1718 Africa Cotonou Benin Phone: (229) 300850/302816 Fax: (229) 30 04 26 E-mail: Contact: Prof. Rene Gilbert AHYI Title: President Founded in: 1988 ECOSOC : None Drug Control Activities and Methods of Intervention: Prevention, treatment, training and education. -
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SUMMARY PROCEEDINGS 1968 ©International Monetary Fund. Not for Redistribution This page intentionally left blank ©International Monetary Fund. Not for Redistribution INTERNATIONAL MONETARY FUND SUMMARY PROCEEDINGS OF THE TWENTY-THIRD ANNUAL MEETING OF THE BOARD OF GOVERNORS SEPTEMBER 30-OCTOBER 4, 1968 WASHINGTON, D. C. ©International Monetary Fund. Not for Redistribution This page intentionally left blank ©International Monetary Fund. Not for Redistribution CONTENTS PAGE Introductory Note xi Address by the President of the United States of America, Lyndon B. Johnson 1 Opening Address by the Chairman of the Boards of Gover- nors, the Governor for Ceylon, U. B. Wanninayake 7 Presentation of the Twenty-Third Annual Report by the Chairman of the Executive Board and Managing Direc- tor of the International Monetary Fund, Pierre-Paul Schweitzer 19 Discussion of Fund Policy at Second Joint Session Statements by the Governors for Indonesia—Ali Wardhana 30 Korea—Jong Ryul Whang 34 Malaysia—Ismail bin Mohamed Ali 36 Canada—Edgar J. Benson 40 India—Morarji R. Desai 45 United States—Henry H. Fowler 48 Germany—Karl Schiller 63 France—Frangois-Xavier Ortoli 69 Zambia—E. H. K. Mudenda 77 Italy—Emilio Colombo 79 Japan—Makoto Usami 89 Algeria—Cherif Belkacem 94 V ©International Monetary Fund. Not for Redistribution VI CONTENTS PAGE Discussion of Fund Policy at Fund Session Statements by the Governors for Spain—Faustino Garcia Monco 103 Venezuela—Benito Raul Losada 105 Austria—Wolfgang Schmitz Ill Ceylon—William Tennekoon 114 Malta—Giovanni Felice 117 Australia—William McMahon 119 United Kingdom—Roy Jenkins 125 Congo, Democratic Republic of—Albert Ndele .... 131 Netherlands—J. Zijlstra 135 Ethiopia—Menasse Lemma 139 Nepal—Yadav Prasad Pant 141 Libya—Khalil Bennani 143 New Zealand—R.