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(Click for frequent words.) 72 radioactivity 72 radioactive materials 70 radioactive material 66 radioactive 65 radioactive iodine 64 radiation 63 radioactive particles 60 radionuclides 60 radioactive contamination 60 cesium 59 radioactive contaminants 58 radioactive byproducts 58 radioactive isotopes 58 radioactive substance 58 Radioactive substances 58 radionuclide 57 tritium 57 Radioactivity 57 Radiation 56 radiological materials 56 harmful substances 55 Radioactive material 55 radioactive cesium 55 radioactive steam 55 harmful vapors 55 nonradioactive 54 toxic gases 54 hazardous vapors 54 toxic vapors 54 radioactive fallout 54 toxic substances 54 harmful radiations 53 Radioactive contamination 53 radioactive nuclides 53 radioactively contaminated 53 radiation leakage 53 beryllium dust 53 becquerels 53 methyl chloride 53 microsieverts 53 radiactive 53 americium 53 radiological contaminants 53 Taisuke Tomikawa 53 toxic chemicals 52 bequerels 52 Highly radioactive 52 millisieverts 52 radioactive leakage 52 contaminants 52 radioactive tritium 52 toxic dioxins 52 allyl alcohol 52 solvent vapors 52 nitrobenzene 52 radioactive isotope iodine 52 Radioactive iodine 52 radioactive wastes 52 ionizing radiation 52 picocurie 52 radiation wafting 52 toxic pollutants 52 Radioactive cesium 52 terabecquerels 51 radium naturally occurring 51 swallowing radioactive iodine 51 radioiodine 51 radioactive vapor 51 pollutants 51 Caesium 51 nuclides 51 harmful contaminants 51 emitting radiation 51 iodine 51 Radioactive isotopes 51 sulfurated hydrogen 51 toxic wastes 51 zeolite mineral 51 radioactive iodide 51 toxins 51 radioactive isotope cesium 51 toxic gasses 51 dioxins 51 vinyl chloride 50 methamidophos 50 tetrachloroethene 50 mercury vapors 50 poisonous chemicals 50 hazardous substances 50 tritiated water 50 tetrachlorethylene 50 radiactivity 50 chromium VI 50 poisonous gasses 50 hazardous chemicals 50 crippled Fukushima Daiichi 50 radioactive plume 50 chemical bromate 50 radioactive cobalt 50 poisonous substances 50 naturally occurring radioactive 50 fuel rods 50 carcinogenic dioxins 50 oxidized mercury 50 dioxins furans 50 strontium cesium 49 TCE PCE 49 millisieverts mSv 49 plutonium americium 49 emits gamma rays 49 irradiators 49 arsenic mercury 49 Radiation readings 49 radiation exposure 49 benzene carcinogen 49 micro sievert 49 sodium coolant 49 microcystins 49 asbestos fibers 49 neutron radiation 49 quake stricken Fukushima 49 THMs 49 contaminant 49 radioactivity readings 49 potassium iodine 49 combustion byproducts 49 Hydrogen Sulfide 49 reactor coolant 49 carbon monoxide hydrocarbons 49 radioactive isotope 49 benzopyrene 49 radon concentrations 49 carcinogenic chemicals 49 Setbacks mount 49 Radioactive Iodine 49 airborne toxins 49 Fukushima Ibaraki Tochigi 49 Daiichi plant 49 HAAs 49 carbon tetrachloride 48 cited krypton strontium 48 PM#s 48 airborne asbestos fibers 48 unoperational caught 48 heptyl 48 combustible gases 48 naturally occurring radioactivity 48 radiological hazards 48 unlined ponds 48 benzene 48 curies 48 carcinogenic substances 48 terabecquerel 48 flammable vapors 48 mercury dioxins 48 millirem 48 engineered nanomaterials 48 seawater 48 neighboring prefectures 48 Bq kg 48 flammable corrosive 48 EtO 48 gases 48 noxious pollutants 48 PDBEs 48 PCB polychlorinated biphenyls 48 radiological 48 cesium strontium 48 dioxin 48 radiological contamination 48 mildly radioactive 48 airborne pollutants 48 toxicants 48 Asbestos fibers 48 radiations 48 flammable gases 48 gaseous chlorine 48 carcinogenic polycyclic aromatic hydrocarbons 48 millisievert limit 47 microbiological contamination 47 formaldehyde carcinogen 47 krypton gas 47 harmful toxins 47 Bromate 47 potent carcinogen 47 wastewater effluents 47 Daiichi nuclear 47 chemicals 47 flammable solvents 47 Japan stricken Fukushima 47 organophosphate pesticide 47 microsievert 47 tritiated 47 isotope polonium 47 airborne contaminants 47 toxic hydrogen sulphide 47 becquerel 47 tritium contamination 47 radiation leaks 47 fissionable materials 47 trichlorethylene 47 rems 47 Tritium 47 hydrocarbon vapors 47 Radiation leaking 47 Fukushima 47 Fukushima No.1 47 industrial solvent trichlorethylene 47 #,#,# trichloroethane 47 radio nuclides 47 plutonium 47 Sodium cyanide 47 Tritium occurs naturally 47 iodine cesium 47 flammable methane 47 organophosphate exposure 47 overheated fuel rods 47 arsenic cadmium mercury 47 trichloroethene 47 perfluorinated chemicals 47 Abnormal radiation 47 Fecal coliform 47 formaldehyde benzene 47 colorless odorless radioactive 47 poisonous gases 47 radioactive Iodine 47 Radioactive fallout 46 ammonia nitrogen 46 E. Coli bacteria 46 disinfection byproducts 46 PFCAs 46 Bushberg 46 Spent fuel rods 46 reactor fuel rods 46 polyaromatic hydrocarbons 46 DDT dieldrin 46 Toxic chemicals 46 carcinogenic benzene 46 tetrachlorethylene PCE 46 toxic nitrobenzene 46 toxic hydrogen sulfide 46 TCE vapors 46 pesticide residues 46 pesticide methamidophos 46 radioactive depleted uranium 46 Fetal heartbeats 46 benzene vapors 46 crippled Fukushima Dai Ichi 46 crystalline silica 46 trichlorethylene TCE 46 PCBs polychlorinated biphenyls 46 perfluorooctanoic acid PFOA 46 odorless colorless gas 46 Methyl mercury 46 Ireland RPII 46 Vinyl chloride 46 Elemental mercury 46 noxious gases 46 fissionable 46 Hazardous substances 46 sulfur trioxide 46 chemical malachite green 46 flammable vapor 46 benzene arsenic 46 gamma rays emitted 46 Fukushima plant 46 tritium plume 46 tritium concentrations 46 official Kenji Kawasaki 46 polychlorinated biphenyl PCB 46 hexavalent chromium 46 Miyagi prefectures 46 radiation emitted 46 Fukushima nuclear 46 metal degreasing 46 harmful chemicals 46 particulate pollutants 46 radioactive waste 46 heptachlor 46 Bq/m3 46 bioaerosols 46 phosphine gas 46 toxic effluents 46 ultrafine particles 46 effluents 46 hexogen 46 alpha emitters 46 spent fuel rods 46 indoor radon 46 ozone depleting gases 46 contaminents 46 radioactive isotope tritium 46 Iodine counteracts 46 carbon monoxide nitrogen dioxide 46 polychlorinated biphenyls PCBs 46 radioisotopes 46 pollutants emitted 46 Fukushima Reactor 45 PAHs polycyclic aromatic hydrocarbons 45 pollutant particles 45 carcinogenic substance 45 nitrogen oxides carbon monoxide 45 Pollutants 45 Radioactive 45 trihalomethanes THMs 45 reactors 45 Inorganic arsenic 45 Ultrafine particles 45 Xinqiang River 45 cyanogen chloride 45 No.3 reactor 45 spontaneously ignite 45 long lingerer linked 45 Hydrochloric 45 untreated effluents 45 radiation poisoning 45 crystalline silica dust 45 actinides 45 TCE trichlorethylene 45 radioactive radium 45 iodine isotopes 45 millisievert 45 reactor cores 45 spokesman Hidehiko Nishiyama 45 algal toxins 45 Hydrogen Sulfide H2S 45 Flame retardants 45 dichlorvos 45 noxious gasses 45 airborne particulates 45 bioaerosol 45 Volatile Organic Compounds VOCs 45 formaldehyde preservative commonly 45 official Yoshinori Moriyama 45 Minoru Ogoda 45 estrogenic compounds 45 seawater Sakae Muto 45 toluene solvent 45 absorbs radioactive cesium 45 chlorine fumes 45 polybrominated diphenyl ethers PBDEs 45 chemical vapors 45 haloacetic acids 45 Ihor Krol 45 units Masateru Araki TEPCO 45 pesticide residue 45 chlorinated compounds 45 Hydrogen sulfide 45 organochlorine pesticides 45 poisonous carbon monoxide 45 microscopic soot particles 45 Ionizing radiation 45 PFOAs 45 gypsum pond 45 radioactive isotope Polonium 45 contaminated 45 displaces oxygen 45 disinfection byproducts DBPs 45 hexachlorobenzene 45 tsunami crippled Fukushima 45 carcinogenic fibers 45 cyanides 45 Radioactive particles 45 milli sieverts 45 ozone particulate matter 45 TTHM 45 polonium 45 reproductive toxicants 45 krypton 45 crippled Fukushima nuclear 45 Junichi Matsumoto 45 Mihama plant 45 Chromium VI 45 mercury vapor 45 Andreeva Bay 45 Fukushima Dai ichi 45 aerosolize 45 tritium radioactive 45 Sulphur dioxide 45 poisonous fumes 45 nitrogen trifluoride 45 carcinogen benzene 45 carcinogenic chemical 45 toxic pollutant 45 dichloroethylene 45 fecal coliforms 45 fungus spores 45 Daini plant 45 tremolite asbestos 45 Iodine tablets 45 Hydrogen sulphide 45 transuranic elements 45 acrolein 45 E.Coli bacteria 45 #,# butadiene 45 hydrogen cyanide HCN 45 dioxane 45 chlorinated solvent 44 Pathogenic bacteria 44 harmful gasses 44 calcium sulfate component 44 trihalomethane 44 iodine uptake 44 reactor 44 carbon monoxide 44 harmful pollutants 44 nitrogen dioxide 44 TiO2 nanoparticles 44 TEPCO 44 thallium 44 carbon monoxide sulfur dioxide 44 Songhua 44 radioactive fuel rods 44 arsenic 44 Edano 44 leaked tritium 44 saxitoxin 44 sieverts 44 odorous gases 44 bio accumulative 44 stricken Fukushima nuclear 44 Polychlorinated biphenyls PCBs 44 official Jun Tsuruoka 44 particulate matter emitted 44 spew radiation 44 tritium contaminated 44 iodine pills 44 uranium hexaflouride 44 hydrocarbons carbon monoxide 44 groundwater contaminants 44 Fukushima Daiichi nuclear 44 arsenic benzene 44 DBPs 44 poison gases 44 poisonous chlorine 44 Songhua river 44 amphibole asbestos 44 enterococcus bacteria 44 Cesium 44 chlorine 44 degreasing solvent 44 briny wastewater 44 millirems 44 dioxin TCDD 44 invisible odorless tasteless 44 perfluorinated compounds 44 picocuries per 44 substances 44 arsenic contaminated 44 particulates 44 artificial sweetener saccharin 44 residual chlorine 44 Legionella bacteria 44 hydrazine hazardous 44 arsenide 44 Phosgene 44 storage igloos 44 mercury 44 microscopic particle 44 Techa River 44 radionuclide contamination 44 droplet nuclei 44 implications Rogozin 44 chemical mixtures 44 alpha particles 44 DDT PCBs 44 ingested inhaled 44 sievert 44 remote blackwater streams 44 carcinogenic fumes 44 cesium chloride 44 electromagnetic radiation EMR 44 Board AERB 44 solvent toluene 44 synthetic musks 44 Transuranic waste 44 Iodine 44 salt caverns aquifers 44 Radon naturally occurring 44 Fukushima reactor 44 Ichi nuclear 44 radionuclide detection 44 Chernobyl 44 sodium iodide 44 atmospheric pollutants 44 Ozone disinfection produces 44 Co TEPCO 44 Fukushima Ibaraki 44 Radionuclides 44 mSv 44 Norio Kanno chief 44 cadmium mercury 44 fission reactions 44 Radioactive waste 44 ethyl acrylate 44 inhaled ingested 44 dichloroethene 44 Ionising radiation 44 sulfolane 44 fine particulates 44 chlorine byproducts 44 toxic mercury vapor 44 Sulfur dioxide emissions 44 Sakae Muto 44 leaking radioactivity 44 benzene compounds 44 hydrogen sulfide 44 trichloramine 44 official Naoki Kumagai 44 mercury emitted 44 ammonia NH3 44 zirconium cladding 44 E.coli bacteria 44 dichloroethane 44 depleted uranium 44 Nitrogen trifluoride 44 particulate opacity mercury 44 Dai ichi nuclear 44 Trichloroethylene TCE 44 radioactive strontium 44 red sludge 44 mercury cadmium 43 gaseous pollutants 43 radioactive isotope polonium 43 arsenic cadmium 43 benzene toluene xylene 43 absorbs neutrons 43 ichi nuclear plant 43 Fuel rods 43 hydrogen sulphide 43 mercury selenium 43 noxious chemicals 43 .# rem 43 perfluorinated compounds PFCs 43 Fukushima Daiichi 43 Mihama nuclear 43 Pesticide residues 43 inflammable chemicals 43 toxic residues 43 protein albumin 43 Gamma rays 43 cadmium mercury hexavalent 43 microbiological organisms 43 deadly methyl isocyanate 43 chemical perfluorooctanoic acid 43 toxic polychlorinated biphenyls 43 Bq l 43 radioactive thorium 43 degreasing agent 43 persistent bio accumulative 43 ammonia vapor 43 radon 43 Dioxane 43 Volatile Organic Compounds 43 toxic fumes 43 μSv h 43 absorb neutrons 43 combustion gases 43 Carbon monoxide CO 43 crippled Daiichi 43 naturally occurring radium 43 radioactive nuclei 43 Tokaimura 43 outgas 43 mercury chromium 43 quake crippled Fukushima 43 arsine 43 inhaling chlorine 43 Volatile organic compounds 43 fava beans imported 43 sulfur dioxide 43 inflammable substances 43 isotopes 43 sulfuric acids 43 chlorine disinfectant 43 legionella bacteria 43 sulfated chondroitin sulfate 43 PPCPs 43 carcinogens mutagens 43 hazardous waste 43 endotoxins 43 kiloton atomic bomb 43 methylene chloride 43 cyclohexane 43 curium 43 airborne soot 43 hazardous solvents 43 spewed benzene 43 Kola NPP 43 biohazardous waste 43 inorganic arsenic 43 absorbing radioactive iodine 43 liquefied ammonia 43 methyl isocyanate gas 43 Iitate 43 tritium radioactive isotope 43 Mercaptan 43 arsenic cadmium chromium 43 Yubileinaya mine 43 bacteria enterococci 43 foul smelling odor 43 PM# particles 43 occupationally exposed 43 attracting vermin 43 lime slurry 43 PCBs dioxins 43 airborne pollutant 43 drilling muds 43 aerosol particles 43 damaged Fukushima Daiichi 43 Perchlorates 43 liquefied chlorine 43 Demand BOD 43 polluted groundwater 43 #,# Dioxane 43 Chernobyl fallout 43 phosphine 43 contamination 43 carcinogenic pollutants 43 Amur river 43 Radiological Protection Institute 43 oVOCs 43 TBBPA 43 Fukushima Daichi 43 Hazardous wastes 43 cockroach allergens 43 pleural cavity 43 Hidehiko Nishiyama 43 chemical residues 43 foul smelling gases 43 stricken Fukushima Daiichi 43 official Masataka Yoshizawa 43 overheated Fukushima Dai 43 depleted uranium DU 43 No.2 reactor 43 Ken Buesseler 43 flammable substances 43 hazardous wastes 43 persistent bioaccumulative 43 poisonous methyl isocyanate 43 poisons 43 pollutant 43 swallowed inhaled 43 MOX fuel 42 chromium polybrominated biphenyl PBB 42 sulfuric acid mist 42 hunted boar 42 benzene nitrobenzene 42 sulfur dioxide emitted 42 ozone depleting substance 42 vapors 42 Fukushima nuke 42 No.4 reactor 42 toxic byproducts 42 harmful gases 42 Polonium 42 picocuries 42 hydrogen sulfide gases 42 diesel particulates 42 naturally occurring arsenic 42 hazardous material 42 Tetrachloroethylene 42 volcanic ashes 42 ug l 42 chemical slops 42 spokeswoman Tressa Tillman 42 Plutonium 42 electromagnetic radiations 42 hexachlorobenzene HCB 42 toxin 42 suspected carcinogen 42 ecologically sensitive wetlands 42 albumin protein 42 Masato Abe 42 vapor 42 Hydrogen fluoride 42 mercury potent neurotoxin 42 Counterfeit cigarettes 42 cosmic radiation 42 organophosphorous 42 Oskarshamn nuclear 42 perfluorooctane sulfonate PFOS 42 E.coli bacterium 42 potassium iodine pills 42 Zohrehvand 42 PCBs 42 thyroid glands 42 mutagenic chemicals 42 BfS 42 Enterococcus bacteria 42 chemical perchlorethylene 42 enriched uranium HEU 42 AERB 42 PWRs 42 radioactive thallium 42 FMD virus 42 infectious droplets 42 unchlorinated water 42 phosphogypsum 42 pollutions 42 bacterias 42 potassium iodine tablets 42 specialist Maria Duazo 42 depleted uranium weaponry 42 transuranic 42 hydrofluorocarbons HFCs perfluorocarbons PFCs 42 genotoxic substance 42 chromium chloride 42 Perchloroethylene 42 raw untreated sewage 42 cyanogenic glycosides 42 hex chrome 42 chemical #,# butanediol 42 coli bacteria 42 Effluents 42 biological toxin 42 Ethylene oxide 42 spokesman Yasunori Okazaki 42 scatter radioactive 42 respirable 42 Fine particulates 42 Embalming fluid 42 PBDE chemicals 42 respiratory irritants 42 Americium 42 sarcosine 42 chlorinated solvents 42 residual radioactivity 42 Seveso 42 inert nitrogen 42 aromatic hydrocarbons 42 sulfuric gases 42 hazardous 42 carcinogen dioxin 42 pathogenic microbes 42 contaminate swaths 42 Fukushima Daiichi plant 42 waterborne pathogens 42 uranium fuel rods 42 Tochigi prefectures 42 toxaphene 42 Dioxins 42 magnesium sodium potassium 42 fine particulate pollution 42 chemical leaches 42 pepper spray Roskowski 42 pico curies 42 haloacetic acid 42 cryogenic liquids 42 Plasma Gamma 42 para dichlorobenzene 42 irritant potassium hydroxide 42 Hydraulic fluid 42 Carbon tetrachloride 42 Gunma prefectures 42 isotope 42 nitric acids 42 #,# dioxane 42 hydrogen chloride 42 ozone nitrogen dioxide 42 millisievert mSv 42 nitrogen dioxide carbon monoxide 42 methyl isocyanate 42 healthiest seafoods around 42 urate 42 corrosives 42 methyl mercury 42 organochlorines 42 dioxins PCBs 42 #.# microsieverts 42 reactor containment 42 distribute iodine 42 malachite green 42 TTHMs 42 volcanic gases 42 mercury concentrations 42 Residues 42 Hexavalent chromium 42 methyl chloroform 42 cadmium arsenic 42 microwave radiation 42 radioactive tracers 42 kakina 42 thorium reactors 42 iodine tablets 42 Nitrosamines 42 UF4 42 enriched uranium 42 soot particles 42 biphenyls PCBs 42 naturally occurring radon 42 VOCs 42 Nishiyama 42 dewpoint temperature 42 pthalates 42 aluminum phosphide 42 radon naturally occurring 42 arsenic selenium 42 exhaled carbon dioxide 42 respirable particles 42 engineered nanoparticles 42 hydroxyl radicals 42 sulfur dioxide nitrogen dioxide 42 soot particulates 42 damaged Fukushima Dai 42 hydrogen sulphide H2S 42 particle concentrations 42 mercury arsenic 42 Khamisiyah 42 ash 42 radioisotope 42 Anda Ray 42 spokesman Taku Ohara 42 limits naphtha waxes 42 hazardous materials 42 millicuries 42 inorganic mercury 42 gamma irradiator 42 neutrons emitted 42 antibiotic residues 42 inhaling asbestos 42 Sulfur dioxide 42 Libby vermiculite 42 Enriching uranium creates 42 bromate 42 Fukushima Daini 42 friable asbestos 42 radioactive Polonium 42 element polonium 42 combustible dusts 42 groundwater contaminant 42 Sanlu powdered milk 42 #,# dichloroethane 42 strontium 42 smog forming gases 42 phosgene 42 Ozone depleting 42 nuclear reactors 42 irradiated fuel rods 41 hydrogen sulfide ammonia 41 Sodium dichromate 41 manager Teruaki Kobayashi 41 Microscopic particles 41 Volatile Organic Compounds VOC 41 corrosive salt 41 gamma radiation 41 Keith Takata 41 trichloroethene TCE 41 chlorinated pesticides 41 particles emitted 41 polybrominated diphenyl ether 41 cadmium poisoning 41 organophosphate insecticides 41 picoCuries 41 Thi Vai River 41 Chornobyl 41 pHs 41 perfluorochemicals 41 Obninsk Russia 41 nuclear 41 carcinogens 41 harmless nitrogen 41 endocrine disrupting compounds 41 nonstick substance 41 potentially carcinogenic 41 pathogenic organisms 41 lethal poison ricin 41 Sandor Pinter 41 Masataka Shimizu apologized 41 trichloroethane 41 neighboring prefectures Chiba 41 explosive hexogen 41 ethyl mesilate 41 airborne mold spores 41 spokeswoman Diane Screnci 41 nitrogenous compounds 41 benzene toluene 41 leaking radiation 41 Minister Sergei Shoigu 41 unpleasant smell 41 yellowish liquid 41 gases emitted 41 carbon monoxide colorless odorless 41 particulate matter 41 Socatri 41 lewisite 41 transuranic wastes 41 Picric acid 41 Nuclear Safety IRSN 41 carcinogenic compounds 41 unexploded ordnances 41 sulphate particles 41 airborne pathogens 41 chlordane 41 clenbuterol positives 41 inorganic salts 41 plutonium oxide 41 hydrogen chloride HCl 41 deca BDEs 41 Fukushima Daiichi reactors 41 highly enriched uranium 41 triclocarban 41 pollutant ozone 41 spokesman Sergei Vlasov 41 metallic salts 41 Keith Baverstock 41 corrosive gases 41 dioxin Zimpfer 41 inflammable material 41 vinyl chloride monomer 41 vinyl lunchboxes 41 charcoal filters 41 vaporises 41 lipoprotein particle 41 metallic particles 41 Bq 41 sand lance 41 Chiba prefectures 41 sulfurous gases 41 Household hazardous wastes 41 Rostechnadzor 41 leaking tritium 41 pentane 41 toxic solvent perchlorethylene 41 polycyclic aromatic hydrocarbons PAHs 41 toxic 41 liquids solids 41 crippled Fukushima 41 dimethyl sulfide 41 DuPont DeLisle plant 41 Alexei Popikov 41 chemical 41 Japanese cult Aum 41 Gremikha 41 Seveso Italy 41 allergenic proteins 41 demineralised water 41 sulfur dioxides 41 alpha emitter 41 Particulates 41 impurities 41 Earthly microbes 41 industrial effluents 41 nonionizing radiation 41 Hydrogen Sulphide 41 spokesman Junichi Matsumoto 41 contamination Nishiyama 41 sarin 41 Depleted uranium 41 rotten egg smelling 41 electromagnetic fields EMFs 41 fissile isotopes 41 depleted uranium munitions 41 spewing radioactive 41 ODSs 41 rockash 41 PAH compounds 41 trace amounts 41 Carbofuran 41 cyanide ions 41 coal ash impoundments 41 hydrocyanic acid 41 enterococci bacteria 41 manganese smelter 41 lead mercury cadmium 41 perchlorates 41 carbon dioxides 41 sulfur dioxide nitrogen oxides 41 Cohansey aquifer 41 e coli bacteria 41 colorless flammable 41 unenriched uranium 41 bisphenol A. 41 harmful dioxins 41 Brimstone Solar 41 poly aromatic hydrocarbons 41 Disease Registry ATSDR 41 PM#.# particles 41 herbicide residues 41 pesticides aldrin 41 inhaling noxious fumes 41 ash sludge 41 Contaminated groundwater 41 faecal coliform 41 inhaling poisonous gas 41 vinyl shower curtains 41 Benzo pyrene 41 legionella 41 ichi nuclear complex 41 Zhang Lijun vice 41 Iitate village 41 painkiller hydromorphone 41 Domoic acid neurotoxin 41 ultra violet radiation 41 CO ₂ 41 Asanova 41 overpressurized 41 fissionable material 41 particulate