SE431693B - Forfarande och anordning for ytbeleggning av fast material - Google Patents
Forfarande och anordning for ytbeleggning av fast materialInfo
- Publication number
- SE431693B SE431693B SE7803449A SE7803449A SE431693B SE 431693 B SE431693 B SE 431693B SE 7803449 A SE7803449 A SE 7803449A SE 7803449 A SE7803449 A SE 7803449A SE 431693 B SE431693 B SE 431693B
- Authority
- SE
- Sweden
- Prior art keywords
- liquid
- binder
- solid
- inert carrier
- evaporator
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 17
- 239000011248 coating agent Substances 0.000 title claims description 7
- 238000000576 coating method Methods 0.000 title claims description 7
- 239000011343 solid material Substances 0.000 title claims description 6
- 239000007788 liquid Substances 0.000 claims description 50
- 239000011230 binding agent Substances 0.000 claims description 39
- 239000007787 solid Substances 0.000 claims description 37
- 239000002245 particle Substances 0.000 claims description 34
- 239000000126 substance Substances 0.000 claims description 29
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 28
- 239000000243 solution Substances 0.000 claims description 21
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 16
- 235000011152 sodium sulphate Nutrition 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 238000009736 wetting Methods 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000002386 leaching Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 230000002285 radioactive effect Effects 0.000 claims description 4
- 239000002901 radioactive waste Substances 0.000 claims description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 238000004880 explosion Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000012857 radioactive material Substances 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 5
- 239000011734 sodium Substances 0.000 claims 3
- 229910052708 sodium Inorganic materials 0.000 claims 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000003063 flame retardant Substances 0.000 claims 1
- 239000011236 particulate material Substances 0.000 claims 1
- 230000000704 physical effect Effects 0.000 claims 1
- 239000004014 plasticizer Substances 0.000 claims 1
- 239000004848 polyfunctional curative Substances 0.000 claims 1
- 239000012815 thermoplastic material Substances 0.000 claims 1
- 239000000080 wetting agent Substances 0.000 claims 1
- 238000007711 solidification Methods 0.000 description 7
- 230000008023 solidification Effects 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- 229920001807 Urea-formaldehyde Polymers 0.000 description 6
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 6
- 239000002904 solvent Substances 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- MUTGBJKUEZFXGO-OLQVQODUSA-N (3as,7ar)-3a,4,5,6,7,7a-hexahydro-2-benzofuran-1,3-dione Chemical compound C1CCC[C@@H]2C(=O)OC(=O)[C@@H]21 MUTGBJKUEZFXGO-OLQVQODUSA-N 0.000 description 1
- MHCVCKDNQYMGEX-UHFFFAOYSA-N 1,1'-biphenyl;phenoxybenzene Chemical compound C1=CC=CC=C1C1=CC=CC=C1.C=1C=CC=CC=1OC1=CC=CC=C1 MHCVCKDNQYMGEX-UHFFFAOYSA-N 0.000 description 1
- 208000035484 Cellulite Diseases 0.000 description 1
- 206010049752 Peau d'orange Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 206010047700 Vomiting Diseases 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000036232 cellulite Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- JZZIHCLFHIXETF-UHFFFAOYSA-N dimethylsilicon Chemical compound C[Si]C JZZIHCLFHIXETF-UHFFFAOYSA-N 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 239000004634 thermosetting polymer Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000008673 vomiting Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S159/00—Concentrating evaporators
- Y10S159/12—Radioactive
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Processing Of Solid Wastes (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/781,893 US4119560A (en) | 1977-03-28 | 1977-03-28 | Method of treating radioactive waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7803449L SE7803449L (sv) | 1978-09-29 |
| SE431693B true SE431693B (sv) | 1984-02-20 |
Family
ID=25124293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7803449A SE431693B (sv) | 1977-03-28 | 1978-03-28 | Forfarande och anordning for ytbeleggning av fast material |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4119560A (de) |
| JP (1) | JPS53140500A (de) |
| BR (1) | BR7801763A (de) |
| CA (1) | CA1096713A (de) |
| CH (1) | CH634945A5 (de) |
| DE (1) | DE2811762C2 (de) |
| ES (1) | ES468263A1 (de) |
| FR (1) | FR2386106B1 (de) |
| GB (1) | GB1580611A (de) |
| IT (1) | IT1096152B (de) |
| SE (1) | SE431693B (de) |
| ZA (1) | ZA781418B (de) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2361725A1 (fr) * | 1976-08-13 | 1978-03-10 | Commissariat Energie Atomique | Procede de stockage de dechets radioactifs solides de grandes dimensions |
| US4246233A (en) * | 1978-08-23 | 1981-01-20 | United Technologies Corporation | Inert carrier drying and coating apparatus |
| DE2904627C2 (de) * | 1979-02-07 | 1984-04-12 | Alkem Gmbh, 6450 Hanau | Verfahren zum Aufbereiten von Abfällen |
| DE2944302C2 (de) * | 1979-11-02 | 1985-10-03 | Kraftwerk Union AG, 4330 Mülheim | Verfahren und Einrichtung zum Trocknen von radioaktiven Abwasserkonzentraten mit Borsalzen aus Verdampferanlagen von Kernreaktoren |
| US4582638A (en) * | 1981-03-27 | 1986-04-15 | General Signal Corporation | Method and means for disposal of radioactive waste |
| US4434074A (en) * | 1981-04-02 | 1984-02-28 | General Electric Company | Volume reduction and encapsulation process for water containing low level radioactive waste |
| DE3429981A1 (de) * | 1984-08-16 | 1986-03-06 | GNS Gesellschaft für Nuklear-Service mbH, 4300 Essen | Verfahren fuer die vorbereitung von radioaktiven und/oder radioaktiv verseuchten abfallfeststoffen und verdampferkonzentraten fuer die endlagerung in endlagerbehaeltern |
| DE3432103A1 (de) * | 1984-08-31 | 1986-03-13 | Kraftwerk Union AG, 4330 Mülheim | Verfahren zum volumenreduzierung von radioaktiv beladenen fluessigkeiten und rippenkoerper zur verwendung dabei |
| US4952339A (en) * | 1985-03-22 | 1990-08-28 | Nuclear Packaging, Inc. | Dewatering nuclear wastes |
| US4748051A (en) * | 1985-04-01 | 1988-05-31 | Polysar Financial Services S.A. | Reducing exposure to hazardous particles |
| US4917807A (en) * | 1986-02-21 | 1990-04-17 | Westinghouse Electric Corp. | Method for recovering solvent |
| JPS63145997A (ja) * | 1986-07-04 | 1988-06-18 | 株式会社荏原製作所 | 放射性廃棄物の固化方法 |
| US4892684A (en) * | 1986-11-12 | 1990-01-09 | Harp Richard J | Method and apparatus for separating radionuclides from non-radionuclides |
| FR2607957A1 (fr) * | 1986-12-05 | 1988-06-10 | Commissariat Energie Atomique | Bloc contenant des dechets en vue de leur stockage et procede de realisation d'un tel bloc |
| JPS63195598A (ja) * | 1987-02-07 | 1988-08-12 | 日本碍子株式会社 | 放射性廃棄物の固化処理装置 |
| DE3802755A1 (de) * | 1988-01-30 | 1989-08-10 | Kernforschungsanlage Juelich | Verfahren zur einlagerung von radioaktiven abfallstoffen |
| US4955403A (en) * | 1988-11-30 | 1990-09-11 | Westinghouse Electric Corp. | Closed loop system and method for cleaning articles with a volatile cleaning solvent |
| US5122268A (en) * | 1989-08-11 | 1992-06-16 | Westinghouse Electric Corp. | Apparatus for waste disposal of radioactive hazardous waste |
| US5434334A (en) * | 1992-11-27 | 1995-07-18 | Monolith Technology Incorporated | Process for treating an aqueous waste solution |
| US6030549A (en) * | 1997-08-04 | 2000-02-29 | Brookhaven Science Associates | Dupoly process for treatment of depleted uranium and production of beneficial end products |
| US5916122A (en) * | 1997-08-26 | 1999-06-29 | Na Industries, Inc. | Solidification of aqueous waste |
| KR100934026B1 (ko) | 2007-12-24 | 2009-12-28 | 한국원자력연구원 | 방사성폐기물 포장물 내 유리수 측정 및 제거방법 및 그장치 |
| FR2933099B1 (fr) * | 2008-06-30 | 2011-11-25 | Spado Sa | Composition d'enrobage pour le stockage de dechets toxiques pour la sante et/ou l'environnement depourvue d'agent durcisseur aromatique |
| CN110180199B (zh) * | 2019-06-10 | 2024-11-05 | 浙江恒达仪器仪表股份有限公司 | 一种用于环境监测的氚自动提取装置及方法 |
| KR102286810B1 (ko) * | 2019-12-20 | 2021-08-06 | 주식회사 새빛이엔이 | 방사성폐기물드럼의 내부에 대한 저온건조장치 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1997980A (en) * | 1931-09-05 | 1935-04-16 | Atlantic Refining Co | Sludge treatment |
| US2182428A (en) * | 1935-11-11 | 1939-12-05 | Fladmark Erling | Method of recovering the solids from pulp mill waste liquors |
| US2417131A (en) * | 1944-12-05 | 1947-03-11 | Seagram & Sons Inc | Distillation of polyhydric concentrate with cooling of solid residue |
| US3022149A (en) * | 1957-11-29 | 1962-02-20 | North American Aviation Inc | Process for dispersing solids in polymeric propellent fuel binders |
| US3236747A (en) * | 1962-02-21 | 1966-02-22 | Halcon International Inc | Process for separating volatile material from a liquid mixture by a series of vaporization stages |
| US3544360A (en) * | 1968-04-18 | 1970-12-01 | Nat Defence Canada | Process for desensitizing solid explosive particles by coating with wax |
| US3463738A (en) * | 1968-05-01 | 1969-08-26 | Atomic Energy Commission | Conversion and containment of radioactive organic liquids into solid form |
| US3734160A (en) * | 1970-05-15 | 1973-05-22 | Hydro Chem & Mineral Corp | Flash evaporation using surface active agent and immiscible liquid |
| US3822251A (en) * | 1970-12-28 | 1974-07-02 | Rockwell International Corp | Nitration |
| US3954526A (en) * | 1971-02-22 | 1976-05-04 | Thiokol Corporation | Method for making coated ultra-fine ammonium perchlorate particles and product produced thereby |
| US4043875A (en) * | 1972-02-02 | 1977-08-23 | Vereinigte Delstahlwerke Ag. (Vew) | Two-step flash technique for vaporizing radioactive liquids |
| US3891496A (en) * | 1972-11-14 | 1975-06-24 | Austral Erwin Engineering Co | Method of heat exchange and evaporation |
| US3935339A (en) * | 1973-07-16 | 1976-01-27 | Exxon Production Research Company | Method for coating particulate material thereof |
| DE2363474C3 (de) * | 1973-12-20 | 1986-02-13 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Verfahren zur Verfestigung von im wesentlichen organischen, radioative oder toxische Stoffe enthaltenden Abfallflüssigkeiten |
| BE819818A (nl) * | 1974-09-12 | 1974-12-31 | Werkwijze voor het behandelen van organische afvalstoffen | |
| US4021363A (en) * | 1975-07-22 | 1977-05-03 | Aerojet-General Corporation | Material for immobilization of toxic particulates |
| DE2714672A1 (de) * | 1976-04-02 | 1977-11-10 | Bofors Ab | Verfahren zum abtrennen von festen, radioaktiven bestandteilen aus fluessigem abfall und ueberfuehren in einheiten fuer die langzeitlagerung |
-
1977
- 1977-03-28 US US05/781,893 patent/US4119560A/en not_active Expired - Lifetime
-
1978
- 1978-03-10 ZA ZA00781418A patent/ZA781418B/xx unknown
- 1978-03-16 CA CA299,073A patent/CA1096713A/en not_active Expired
- 1978-03-17 IT IT21298/78A patent/IT1096152B/it active
- 1978-03-17 DE DE2811762A patent/DE2811762C2/de not_active Expired
- 1978-03-21 FR FR7808157A patent/FR2386106B1/fr not_active Expired
- 1978-03-22 BR BR7801763A patent/BR7801763A/pt unknown
- 1978-03-22 GB GB11396/78A patent/GB1580611A/en not_active Expired
- 1978-03-23 CH CH319678A patent/CH634945A5/de not_active IP Right Cessation
- 1978-03-27 ES ES468263A patent/ES468263A1/es not_active Expired
- 1978-03-28 JP JP3496678A patent/JPS53140500A/ja active Pending
- 1978-03-28 SE SE7803449A patent/SE431693B/sv not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB1580611A (en) | 1980-12-03 |
| FR2386106B1 (fr) | 1985-08-16 |
| IT7821298A0 (it) | 1978-03-17 |
| IT1096152B (it) | 1985-08-17 |
| DE2811762A1 (de) | 1978-10-05 |
| ES468263A1 (es) | 1978-12-16 |
| JPS53140500A (en) | 1978-12-07 |
| DE2811762C2 (de) | 1987-01-15 |
| CH634945A5 (de) | 1983-02-28 |
| SE7803449L (sv) | 1978-09-29 |
| ZA781418B (en) | 1979-03-28 |
| CA1096713A (en) | 1981-03-03 |
| FR2386106A1 (fr) | 1978-10-27 |
| US4119560A (en) | 1978-10-10 |
| BR7801763A (pt) | 1979-03-13 |
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