SCIENTIFIC ABSTRACT VANYSEK, J. - VANYUKOV, A.V.

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SCIENTIFIC ABSTRACT
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TZUI&6;;MJLI W. Diisopropylfluorafoofat - Novo m-4otikum Diisopropylfluorophosphate - a now miotic Ceskoslovenska Ofthalmologie 1949, 511 (&-14) In a normal eye, 0.03 % oily solution of MT produced a prolonged ma imal miasis lasting lap to a week. The intraocular pressure was not influenced in most cases. Disturbances due to ciliary spasm and headache, especially in the bones of the orbit, were present and could be temporarily abolished by 1% homatropine. In several cases miosis of the other, untreated, eye was observed, due to resorption of M? and its action on blood cholinesteras No systemic distrubances were observed. In a boy aged tan a paradoxical mydriasis soon followed the initial miosio. This can be explained as a compensatory byperfunction of the parasympathetic system. In an atropinized eye, 0.1% solution of ~ IW? abolished the effect of 1% atropine. This makes DrF the most potent of the known mip~tica. Hyperaemia of the iris occurred in one eye with recent contusion. Thus, DFP is unsuitable If inflammatory changes of the iris are present. As regards glaucoma, DFF seems to be especially indi- cated in glaucoma simplex; 0-05% prsved to be a suitable solution, Instillations once to twice a week sufficing. A good effect was observed in six cases of chronic inflammatory glaucoma with instillation twice a week. Experience In acute inflammatory glaucoma was less favourable. A good effect was observed in secondary glaucoma accompanying intumeacent cataract and aphakia. No effect was observed in aecondtiry glaucoma thrombosis of the central vein of the retina, or in a case of lens ffubluxation where the pain became more severe in spite of lowering of the intraocular pressure. Klima - Frague (Sec. XII) SO: Excerpta Medica, Vol. II, No. 10, Seat. II, Oct. 1949 I f -W'j ~ f -, -~ I j" --f V I- I - - I - - - -FL- ~' ) .- _VANYSM J. Dassni indikELce a vysledky transplantaci hov3W freeent indications and remdto of corneal gratitflek. ~xty 519 1 May 50 P., 249-52, 1. Of the Eye Miic of the Fedicti Facuity, Charles Utdverolty, In Hradce Kralove, (Head - Prof. Jan Vanyodk, H.D.). VANYSEK, J. Present indication and results of the corneal grafts. Lek.119ty 5 no.B.,228-230; contd. Ap 150, (CUCL 19:2) 1. Of the Eye Clinic of the Medical Faculty, f,harles University, in Hradce Kralova, (Read -- Prof. Jan Vanysek, M.D.). VABYSEK, J. SIgnificance of climate therap7 of ocular tuberculosis. Cook. ofth. 6 no.2:91-96 195o. (CLXL 20i1) lo Of the Eye Clinic in Hradec Kralove (Head-Prof. Jan Vanyook, M. D.). VANTSZK, J. Present indications and results of corneal grafts. Lek.listy 5 no.9: 249-252 1 YIV 150. (CLKL 19:2) 1. Of the Eye Clinic of the Medical Faculty, Charles University, in Hrdace Kralove, (Head - Prof. Jan Vanysek, M.D.). RIZEK, V.; VANYSEK, J. Transplantation of the vitreous. Cesk.ofth. 6 no.5:257-265 1950. (CIRL 20:7) 1. Of the Eye Clinic of the Medical Faculty of Charles University Branch in Hradec Kralove (Head-Prof. Jan Vanysek, M.D.). VADYSM, J. Implantation of resins into the orbit. Cesk.ofth. 7 no-5:319-329 1951. (CU4L 21;1) 1. Of thm We Clinic of Charles University, Branch in Hradec Kralove (Head--Prof.Jan Vanyeek,M.D.). VANTSEK, J. /I . Contact lenses. Prakt. lek., Praha 31 no. 12:276-279 20 June 1951. (CLKL 22:3) VANYSTIK, J;VAVRA, R;ZrLMIY, V. Method of electroretjnograp~r in man. Cesk. ofth. 8 no.1:1-8 Jan 1952, (CLKM 22s2) 1. Of the Institute of'Sxperimental Pathology and of the *a Clinic of the Military Medical AcaderV in Hradec Kralove. VA.SYSEK, J..v. Prof.'XUDr; PACA. Miroslay, Ing.; ANBROZ, Ladvik, MUDr: Jan, KUDr Attempted construction of an apparatus for extraction of Intra- ocular non-magnetic foreign bodies. Ceek. ofth. 10 n0,3:194 Je '54. 1. Z ocni kliniky VLA, (3U. foreign bodies, . *extraction of non-magnetio nbjects, appar.) (YMBION BODIAS, *eye, extraction of non-magnetic object, apparJ (OPHTHALMOLOGY, apparatus and instruments, *for extraction of non-magnetic for. body) 45 Id P. to 0 P Ol pa 6-A w -, i ~,; 0'- -0 4v w.CSRPTA ISDICA Sec.22 V01.9/6 Ophthalmology Jun 55 '653, VANYSEK J. Eye Clin. VLA Hradec KrSlov(- CSR. 4, Zivot a d*.Io Jiffho --P-r5-cnATk-Y--.-7iH Prochizka - His life and work 6,';L.(JFTIIAI.. 1954, 10/4 ~263-270) r Biography of JiN Prochlzkn (1749-1820), professor of anatomy, physiology and 01phthalmology in Prague and Vienna, founder of modern knowledge on nedral reflexes and skilful ophthalmic surgeon. who performed more than 3.000 cataract extractions. Zahn - Prague V 111hDICA Sec. 12 Vol .9/ 9 Ophthalmology bePt55 1411. VANYSEK J. 40 fysiologii a pathologii lidbkdho elektroretinogramu. Phy- siologT-and pathblogy of the electroretinogram NAgE VOJSKO, VYDAVATELSTVI tS. BRANNE IMOCI (Praha) 1054 (221 pages) Illus. 128 in six chapters the physiology ahd pathology of the ERG are discussed, illuistrated by numerous elect rored nogrnphic records. The active electrode wag applied in the form of a contact lens of artificial resin. The action potentials were recorded with a four-canal amplifier with photographic registration. As useful components for clinical consideration the time,of latency, the amplitude and the time of duration of the B wave are considered. The clinical features of the ERG are surn- marized as follows: Arteriosclerosis and hypertension: no typical pictures. Ischaernia results In a subnormal ERG. Thrombosis of the central vein: ERG o AIT subnormal or absent, predominance of negative components. Retinal detachment gives a subnormal ERG, with on the borders also a supernormal ERG. Retinitis pigmentosa has no A and B wave, with negative predominance and C wave. In glaucoma the character of the ERG is not in accordance with the amount of visual loss. Amblyopia in hypermetropia has a subnormal slow ERG. Protanopia and deuteranopia may be revealed with electroretinography. Itemeralopia may be detected. The book is extensively illustrated by numerous recordings of ERGS. The author is of the opinion that elect ro retinographic examination should consist of several examinations. Examinatipn of the photopic ERG, of the influence of the time of exposure on the ERG, of the influence of spectral light. of photopic and scotopic ERG. of the central time. As complementary investigations are considered examination by intermittent accelerating flashes, influence of dark adaptation on ERG and electroretinographic perimetry. Winkelman - iltmoterdarn VANYSIK, Zan JIrI Prochaska, on ophthalmologist. Uk, liety, Brno 9 no.15-16: 382-384 1 Aug. 54. 1. Z oent kliniky VTA. (BI,OGRAMIAS,, . Prochaskat Jirl) (OPHTHAIMOLOGY, history, Czech., contribution of Jiri Prochaska) EXCERPTA MICA See.32 Vol.101? C)Pbtb-lw3 off JulY56 997. Klin. Ocznei Czechoolowackiej, Wojskowel A. M. JkJaskra w rope I inog raficznym. The ERG in glaucoma KLIN. OCZNA 1955, 25/4 (235-248) Graphs 8 Tables I No logical correlation was found between the ERG and the course of the disease. The author supposes that the lack of correspondence between the ERG and the pathological manifestations during the disease is caused by the affected interdei- pendence between stimulation and inhibition of neural action which takei place In the retina presumably. Szmyt - LUX VWV.PTA MWICA SOO.12 V01110/9 OphthsUoloff 3apt56 1486,j~ ~NISEK JeOl5nf Klin., Brno. *Trias R. Vanjoka a prim&rnf glaukom. - . an ~s k's triad and primary glaucoma VMTA.LgK- 1956. 2/2 (177-180) Tables I R. Vangmek's triad (expiration retardation ofpulse,Thomayer's orthostatic tachy- cardia and Erbens' retardation of pulse during anieflexion) In primary glaucoma gives us information about the state of excitatory and inhibitory subcortical cen. tree during disturbed action of the central nervous system. The finding of a po- sitive ~ftnjsek's triad gives the opportunity of managing the eye tension better by Using sedatives than only by means of miotics. Klenovi - Hradec KrAIov6 VANYSEK. J. 0 clinical experience with electroretinography. Rev. Czech. M. 2 no-3:205-215 1956. I. From The Opthalmology Dept.. Masaryk Univeruity. Brno. Director: Prof. J. Vanysek. (MINA, pbys'iol. dynamics, determ. b7 electroratinography) VANTSEK, Ja---'--~ - ----- Blectroratinograpble studies of the effect of the central nervous eyetes on adaptation of tho human ratio. Cook. ofth. 12 no.4: 233-238 Aug 56. 1. Z ocni kliniky MU v Brno. Prednosta: prof. Dr. J. Vanyeek. (RNTINA, physiology, slactroratinography of dark adaptation, role of GNS 00) (ADAPTATION. OCULA3. dark, alectro'retinography & role of CBS (0z)) (CENTUL MWOUS STSTEN, physiology, regulation of dark adaptation, alectroratinography (Cs)) VAMR9, Jan. Prof. Dr. Human alectroretinograpby; review of cesk. 97 no.10:1ek. veda zahr.,1-18 (ZLIWTBDMIMPAMT review (Cs)) current literature. Cas. lek. 7 Mar 58. wi VANYSEK, Jan; KOZOUSEK, Vladimir Some eye leviono in brain concuovion. Cook. oftb. 17 no.4/5.'281-287 JI 161. 1. Ocni, klinika Univeraity J. Ev. Purkyne v Brnep predn. prof. MUDr. Jan Vanysek. OWN wds & inj) (ErE pathol) VAHTSEK~ -Tanj KOZOUSEKp Vladimir i Sow tapetoretinal degenerations in t.he electroretinographic picture. Cook. ofth. 17 no.7.'481-4M N 161. 1. Ocai. klinika. University J. Dw. Purkyney prednonta prof. dr. Jan Vanydek. (ELECTRORETINOGRAPHY) (RETINA pathol) VANYSEK, J,; PREISOVA; Jo Diagnostic evaluatim of ultrasotmd in ophthalmology. Rev. czech. med. 10 no.2r73-85 passim. 164 1. Ophthalmological 01inic, Medical Faculty., J.H.Parkyne 'University., Brno3 DIrector: Prof. J.Vanyaek,, M*Dop D*Sc, VANMENIJ.; MOSTER, H. FAlation of mucoproteinss electrolytes amd coenzyme A in the serum of patients with glaucoma. Cesk. oftal. 20 no*/+1280-288 J1 164. 1. Oani klinika lekarske fakultyUMvP [Univmity J.E.Pa-kyne) v Bme; prednostat prof., dr. J.Vanyeek,, DrSo. VPIIYSEK,J..-, PREISOVA,J. On the possibilities of untrasonic diagnosis in ophthalmology. Cas.lek. cesk. 103 no.8:193-198 21 F164 1. Ocni klinika lekarske fakulty UJE7P v Bme; prednosta: prof. dr. J.Vanysek, DrSc. VANYSEK, J., prof. dr.,DrSe.; KTAPILIKOVA, K. Early and late experience-c with intracamerall. lenses. Cesk. oftal. 21 no.3tl59-166 MY 165 1. Ocni klinika lekarske fakulty University J.E. Purkyne v Bme (predzicsta: Frof. dr. J. Vanysek, DrSc). PREISOVA, J.; _LAWYSM.,~p_ Our experiences wit% ultrasound d1agnosis of eye diseases. Cesk. oftal. 21 no-51361-369 S 165. 1. Ocni klinika lekarske fakulty University J.E. Purkyne v Brne (prednosta, prof. dr. J. Vanysekj, DrSc.) VANTSM, R. 11610W~~ i~ Some reminiscences of the author's association with Prof. Stud- nick&. Lek.11stv 5 no.22:67o-671 15 Nov 50. (CM 20:5) - -iA-,-d6E"?6j V. 1. ItEclipses of Stars by the Me n 11 138. (1,MT-z;IATI(',I~:0-PitIHODOVL-irz0fa,: ROZIULDY,, Vol. 32., OQcia5* no. '~, 1953, Praha, Czechoslo So: Monthly List of East European Accessions, LG, Vol. 3, No. 5) May 1954tUnclassified - - VA'Iff SEXP- V-0--- "Po'lar telescope." (P-153). RISE HVEZD- (CesKoslovenska spolecnost astronomicka) Praha. V01. 34, No. 7, Sept. 1953. 301 East Huropean Accessions JAst, Vol. 3, No. 8, Aug 19,54. & V Vanysek, V. Notes from a trip, to Pola-nd. p.-6-- '7 KYGH USfA';]J AST!0N07jGKYCII Vol- h, 110- 5, Oct- 1954 CA`~OPIS CESEOSLIY-I 4 1. -- ~:-S Praha, Czechoslovakda SO- 1-11orithly List of East European Accessions, LC, Vol. 5, 110. .2 February, 1956 0 ~!AIIYSEKj 'V. MUM, F. "The Dependence 6f the Pl-.otomOtri6 Constant It of Comets on the Helio- centric Distance. Irl EnGlish.11 p. 65 (13RMIVN~ ASMIalalICIESKIIal VISTITUTOY CHEKI'OSLOIIAKII. BUTTT-rl OF TIE ASTIRONCMICAL 111STITUTZS OF CZECIDSLOVAM. Vol. 5) Eo - I., UY. 1254; ftaha, Czech.) So: Monthly List of East Europcmi Itc.cossions., (EFAL)~ IC., Vol. 4,, No. 4, A-,Til 1955., Uncl.- POJ3R. J., prof. Dr; BRAZDA, J,, Dr; TANYSSK, V., hNDr Incidence of myocardf-il infarction. Lek. listy, Brno 9 no.21: 48lJi84 I Nov 54. 1. Z III, vnitrni kliniky M*U* a astronomickeho uBtavu H.U. Prednoata -prof. Dr J. Mohr. (MYOCARDIAL IWARCT, epidemiology. in Czeohep seazonal factors) (OLIMATEO seazonal variations in incidence of myocardial infarct in Czecho) Card 1/1 Put. 12113 Amthore A Ruprekht, la., and Vanyeek. V. w w ~11_ -1, Title IRagardim- th~c cuestion on dieinte,:;ration of masses considoreed by V. V. uniimiler. prot? em of t..rec b--cies witr, the interact Feriodiedl IAstron. zhur. JI/1. 93-94, Jan-Felt 19_5_i Abstract IThe dedu~~tion from the zciution of' the thiee body prcblem made by Radzievs,~-iy, i.e. the po5zibility of the disintefration of masis--s near the sur, are critici7-,ed. Three references: I USA and 2 USER (19J41-19,14). 4, t,, 4- 1_G2 --- ASZroncMiCill IristitUte -_Ga S, e0hCIaloVakian Acad~ of-aC5.0, RUPRMT, Ya,; Problem of the dispersion of scattered clusters as applied by M.Radzievskii to a general solution of an unlimited problem of thr-e bodies with a Newton-Hook Interaction. Astroa.zhur. 32 no,1:93-94 Ja-T 155, (MIRL 8:2) 1. Astronomiuneskiy institut Chekhoslovatekoy Akademii UAuk. (Stars-.Clusters)(Problem of three bodies) VANfszx, V. _ Dispersion of velocities of bright ratars and interstellar gas. Inv,1(i7m,s.strofi%.obs~r. 16:189-191 156. (MIRA 13:4) 1. Astronomichaskiy institut Chakhooldvatakoy akadomii nauk, Praga. (stars) (Gases. Interstellar) w - - - - -- - - - -- - - VANYSEY,, V. Physical properties of interstellar matter. p. 81, (Pokroky Matematiky, Fysiky A Astronomie, Vol. 2, no. 1. 1957. Praha, Czechoslovakia) SO: Monthly List of East European Accessions (EEAL) LC, Vol. 6, no. 10, October 1957. Uncl. VANYSEK V ; RAJCHL) J. The probable explosion of the comet, P. 57, (Casopis Caskslovenskych Ustava Astronomickych) Vol. 7, no. 5, June 1957 Praha, Czechoslovakia SO: Monthly Index of East European Acessions (EKAI) Vol. 6, No. 22 November 1957 VAl'y5aw, V. Arend-Roland 1956 h Comet. p. 68 (Casopis -Ceskoslovensk-ych Ustavu Astronomick-ych. Vol. 7, No. 5, 19,57, Praha, Czechoslovakia) Monthly Index of East European, Accessions (EEAI) LC, Vol. 7, No. 2, February 1958 VADYSa,', V. The detemiination of the quality of dust In cometarl atmosphem. In EngliElh. P. 195- PUBLICAITONS. (Cokoslovenska akademie ved. Astronomicky ustav.) Praha, Czechoslovakia, No. 34/42, 1958. Monthly List of East European Accessions (F.I-A-I), LC, Vol. 8, no. 11, Nov. 1959 uncl. Y" 1; ' ~ HP it. Physical propertiez of comets baued on photometric data. In English. P. 345. PUBLICAZONS. (Cekoslovenska akademie ved. Astronomicky ustav.)' Praha, Czechosloval-da, No. 34/42, 1958. Monthly List of East European Accessions (EEAI), LC, Vol. 8, no. 11, D"'Ov. 1959 uncl. 911p. VANY6a-, V.; GHYGAtt, J.; SiTA141,11AY Z. Initial velocity in the tail of comet 1956h. In English. P. 115. BULLETIN OF THE ASTRONUIRICAL INSTITUTES OF CZECEOSLOVAKIA. (Ceskoslovenska akademie ved. Astronom-icky ustav) Praha, Czechoslovakia, Vol. 10, no. 4, July 1959. Monthly List of East .6uropean Accessioni (EEAT), LC, Vol. 81 no. 11, Nov. 1959 Uncl. PHASE I BOOK EXPLOITATION =CM216 Budil, Ivo, ad. Do blisk6ho I vzd[Lleniho veamfru (Into the Near and Distant Universe Prague. Orble. 2960. 10,000 copies printed. Authorat Kilan blaha, Doctor of.Ratural Sciences. Candidate or Physics and Mathematlqa. Ondil;ej Brychta, Engineer. Jan Bukava4 Professor, D.C A:., Viclav Dumb&. Doctor of Natural Sciences. Can*'' d1date of Physic inSIMTEemaTics. rjftnk~ C",ILechs, Candidate of ,._b0 -foF of Medicine. "ter, and PAthwutlca Loc Lqeef Dvo k, )a _Tja_dlmIr Outh, Docent, tiir-cf.-Katt-fi-al Sciences, Corresponding N XeilFe-rdr.-tYe 6.1ovsk Academy of Sciences, Doctor at "lea and x1thematica. J9 Klaczek. Doctor of Hat Sciences, Candidate 0 U-i-atre- or rhyau as Dootoref Natural 0 Sciences, Candidate or Physics and mathematics. Luba, Perak, Doctor of Natural Sciences, Candidate or Physics'i 11JI B Doctor of Natural Sciences, Candidate of Physics nd th.ciatles. ; 2 w R reSht, Candidate or Physics and t a andV fat 3 al !--' lp~ -6 lalav Sahnal, Candidate of Phys ce Rathematics. Josef 3aM. d' I Card 1,1el and Kathematles. Zda4ek Aveatka Doctor or Natural Sciences. cW-a-nd-)fatY1iiQlc5. B Candidate of "i VIA-YAW90k~ Doctor of Natural Balance* and Vladimir Vanr'pe~, Doctor of Natural Sciences, Candidate of rHYM-F-MM-79ithe .maties. Reap. 9d.s Josef Sadil. PURPOSE& This boat, is Intended for the general reader Interested In astronomy, celestial mechanics, and astrophysics. COVIRMM& Ths book pr9kents In popular language and In summary form the most Important achievements of science to date In the field of astronomy. celestial mer-hanles, and astrophysics. and notes the Importance or continued progress In these diecipaines for space travel to the moon and In our solar system. and ulti- sately to the nearest stare and galaxies. In the section headed "About the Authors" the degrees and titles. affiliations and scientific contributions of each author am given. The text to accompanied by =my diagrams, graphs, and tabular data. There are 37 photographs of various celestial bodies. No personalities are mentioned. There are 29 references, all Czech [several trane2atlensl. TAWA OF CONTEMs THE PRO UNIVERSE 1. The Noon - The Nearest Cosmic Body 7 3110 and density of the moon Orbit of the moon around the earth Phases of the moon 9 The ashen light of the moon 10 Does ',as moon have any kind of an atmosphere? 11 Temperature an the surface or the moon 13 What does the surface of the moon consist of? 14 Beginnings of lunar mineralogy 19 Is the moon radioactive? I Surface or the moon through a telescope 16 Origin or the seas and crat;rc or the moon 17 Ca"-5y(?~ 0 V. tr L f;15 4-6 AY4L)&5UO pl-4/pw-V74-Ijbs,-4/ POU a-FLOITATION Po-Jf/Po-~/Pq-4/Pac-4/Fr-4 NP(O' ' A5'T/W/::J/DD/ZI/T-r/ZC/'Xq Dirvir, 1-11r6nIny, (rn(;Inecr), tcwln, Xon=d, (Profoocor, Doe --(W6To-rj -71 nit LI, Ivot (GraduRaTT-D7 M-orophy) ; Celplech-t. 7-lencr.-It Mynical al~T-Ilhthczratical Sciences); Codr, 'k-V-QCtor'); i~;Ilzalp ak - cucal sciences); Dvorak, Inver, kDoctor)j (Doctor); Dvor. , Antonin, (Candidate E;~ vc, GuthA Ldinir (C-ondidate of 1"12dical Sciences, Docent, Doctor)0 _nr ____j ; IIMC" (Doctor of Yhysical and I%athct:::v' Ucal. Sciences, Corresponding Mcmbc t~ Czechoslovak Acadc--1V of Scienecs, rrofersor, Doctor); IforrIodart Xan Doctor of rhysical and Mithematical Sciences, Doctor); lacctck, Jouir, (Doctor); Klestp Ill athematical-Se-ience-6); Kololoynlg. MR-"; ---P . (Candidate of PIVoical arA F Vladimir (Doctor); XOTY-'eig, Miloslax, (Candidate of Legal Sciences); Krivrlqr, T,,Adirlav, (Candidate or Vhysiral and. Eatbc=tical Sciences) * Kviz Menck (Czm- - ' 'A didatc o hysical and Mathc=--tical Sciences); Ledvina, R-acik, r, Doctor)-*M.or.r-vck, (Candidate o-z-rrSZIc-FX7GcTe-nccG~' Mrazck,- ~ qd~-2,L I -- liri JO=xOzla.V' of Vediccl, S~'Iezccs; Engl=cr); It-ratel. z ii, Ludcnk, (Doct4 Tcohnical SciencC3); lieu: Thycical WA Ilathc=atical Sciences); r Klene'r (DocWr);?crneTr, Jaxosluvp =:I e c~ 1, Prorcraw, Selene (Dootoi~- -Candidate of Zi:mical ana )IM, P#al' Imonlal SP=AIXIS Doctor, EnZIzeex 5 (Doctor of TecbnIcal, ScIewas, corre member, of the CzcclioalovaY. Ac4dc=y of Polances); MVL--, (Doatir),- Pokorny, Meack, (CanUUto of Ph7vical &n& Wh=&Uual ScIewas, POOGASs D"tw); Cdr& lip % L 415ig-65 11~"53.10 Ruml, Vladimil:, (CandidAte of MeUcal Sciences, Doctor)* Wil Josef (Doctor of. Phyr,ioloF,Leal Sciences); Schmil. rAdirlav Stvern3k. Jir (Candidate of OVsical tory Wenck (Doctor)- T=a' Jaxo3lav (Candidate of TedhaicAl V n1my, (Docent, Engineer); jUhl Ocienceup rrof;s:or, Doctor); VnInice1c. Maria. lCandIdate of rayaioca CLrA 14&tbC- matical Saiene a Doctor); of Physical &zA Kathe- matical Sciences, Docent, Doctor); Via-ak Marian, (Candidate of Phpical &ad ~Imttzmtical Sciences; Doctor); V er) Principles of astronautics (zonady kovwwuky)'?!TeO orbie, 1964. 445 y. 121U808 biblio. 5000 copies pm-inted. Wric TAGS: coamonauticaj, rocket$ sate=teg Gasifil b: PURP= AIM COVEPAMt Tbis Viblication in a pop;lmw sclentiti reference 'cook for, people working in comw=tics. 2w took I;reseutm a wArmy of co==autlas =4 opmee f3jfht up to I Jume 1963. TA= CP CWI;= i Card 2/8 .. .... im 68970 V". 6-00 B/020/60/131/02/006/071 AUTHORS: and Ayzenshtat,N.D. TITLE: Kn Instance of a Lattice Which Cannot be Approximated by Rectifiable Latticos PERIODICALt DoKady Akademii nauk SSSR,1960,Vol 131,Nr 2,pp 249-252 (USSR) ABSTRAM Let G be a plane set homeomorphic to the closed square. Three families of curves A,B,C in G are denoted as a lattice S = A,B,C ia G if they satisfy the following conditionst 1) through every point of G there goes one curve of the families A,B,C each; 2) two curves of two families intersect at most in one point; 3) for every pair of these families there exists a topological mapping of G for which all curves of the pair go over into straight lines. S is called rectifiable if there exists a topological mapping of G for which all curves of A,B.LC go over into=straight lines. Let z - f(xty) be defined in Rs xfkx~Srx% Y-:!2-.-, 2 r and p(t).p(-2t) for t~-.O. Theorem 2z The lattice which corresponds to the function z = f(x,y)=-X+Y-"'PO,)P(Y)P(X+Y)- -0~OOO1xy(x-2)(x-3)(Y+1)(Y- 2 in the square R: 1xi 9576. When pyrite is used, the process proceeds successfully only at higher temperature. Experi- ments were set up to study the degree to which S vapors were employed in the P process. It is found that the utilization of S Card 1/2 depends upon temperature and the nature of the medium. In the 137-58-6-11334 Preparation for Concentration and Flotation of Oxidized Nickel Ores presence of a small amount (301o) of reductant, the degree of utilization of the S vapors rises: 33% at 700o and 5516 at 9000. On P by pyrite, Ni stiffides form to a considerable degree owing to elementary S. The P of pre-reduced ore makes it possible to attain a high degree of conversion of oxygen com- pounds of Ni to sulfides. It is equally important that particles of adequate size be obtained. When the material is heated to 1150-1200' and held at that temperature for Z hours, it is possible to derive the bulk of the sulfides in the form Of inclusions measuring 0.3-0.5 mm. The sulfides may be obtained in the desired form by changing the conditions of cooling. A table of results of flotation of sulfided Ni ores is appended. A.Sh. 1. Nickel ores--Preparation 2. Nickel ores--Flotation Card 2/2 137-58-4-65'15 -Translation from: Referativnyy zhurnal, Metallurgiya, 1958, Nr 4, p 3"; (USSR) AUTHORS: Vanyukov, A-V., Utkin, N-1. TITLE: The Surface Tension of Slag Melts (0 poverkhnostnorn naiya - zhenii shlakovykh rasplavov) . % PERIODICAL: Sb. nauchn. tr. Mosk. in-t tsvetn. met. i zoloted.VNITO tsvetn. metallurgii- 1957, Nr 26, pp 41-53 ABSTRACT: The surface tension 6 of synthetic melts of FeO-SiOz at 1200/14000C and of multi-component slags f SiOZ FeO, CaO, MgO, A1203 (9.5%) ] (111 at. 13500 was determined by the meth- od of maximum bubble pressure. Iron crucibles and capillar- ies were used, and nitrogen was the working gas employed. In 1, with a constant FeO:CaO ratio, ()' diminishes as (SiOZ) rises from 460 (27% SiO2) to 380 ergs/cm?- (58% SiO2). As the FcO. CaO ratio rises from 0.5 to 3.2 at constant ('SiO2), 6- diminishes within the 460-410 interval (at 33% SiO?) and 400-385 ergs/'crn2 (at 58% SiOZ), The dO,/dT of slags differing in SiOZ contents is positive at a FeO:CaO ratio of 1.5. At constant (SiOZ), a rise in (FeO) causes the de/dT to move out of the negative and into Card 1/2 the positive values. In II, a rise in (SiO2) from 36 to 44% or of 137-58-4-6575 The Surface Tension of Slag Melts A1203 from 7.5 to 10.5% causes O'to decline, while as (CaO) rises from 18 to 24%, (FeO) from 16 to 22%, or MgO from 8 to 14%, (5- will iacrease at a rate rising from CaO to MgO. The results are explained, in their quali- tative aspect, by a change in interionic reaction. In particular, the Hie iii 0 with increase in the basic acid contents and temperature is due to sub- division of the complex silicon oxide anions resulting in a strengthening of their bonds with the cations. S.P. 1. Ores--Melting--Surface tension Ca rd 2/2 137-58-4-6576 Translation from: Referativnyy zhurnal, Metallurgiya, 1958, Nr 4, p 37 (USSR.) AUTHORS: Vanyukov, V.A., Vanyukov, A.V., Utkin, N.I. I---------------- TITLE: Surface Phenomena, and the Losses of Metal in Slags !Pover- khnostnyye yavleniya i poteri metalla so shlakami) PERIODICAL: Sb. nauchn. tr. Mosk. in-t tsvetn. met. i zolota i VNITO tsvetn. metallurgii, 1957, Nr 26, pp 54-62 ABSTRACT: Interphase tension (C~) at the slag-matte interface and the wetting (angle of contact *) of slag by matte were measured. The dimensions of rapidly cooling drops of matte in the slag (17.95% FeO, 20.35% CaO, 39.7% SiO?, 9.25% A1203~ 10,255/0 MgO) were determined, and a graphic method (RzhMet, 1956, Nr 2, abstract 1006) was used to calculate CT thereon. As the S contents of the matte rose from 8.8 (16.4% Ni) to 31.7% (23.0% Ni), 6 dropped from 240 to 99 dynes/cm. and the Ni content of the slag increased from 0.04 to 0.3%. As temperature rose from 1200 to 13501C, 0- rose from 193 to 234 dynes/cm, and the Ni content of the slag dropped simultaneously from 0.63 to 0.17%. The rise in 0 with temperature is explained by the Card 1/2 subdivision of the silicon oxide complexes. Holding of melts in 137-58-4-6576 Surface Phenomena, and the Losses of Metal in Slags an oxidizing atmosphere (5% 02) was accompanied by a reduction in (57 while when held in a reducing atmosphere, C increased. In a neutral atmos- phere, the introduction of magnetite inducerl a decline in C . Wetting of the slag by the matte is impaired as the SiO2 and CaO contents of the latter rise, and also as FeO diminishes. ~T is 27-37% and drops by about 100 as the following various changes occur in the slag: SiOZ from 38 to 44%, CaO from 20,5 to 24%, FeO from 22 to 167o. An increase in MgO contents from 10 to 12% caused IV to rise from 31 to 500. It is noted that (0- and 10-rise with the concentration in the slag of cations that do not go into the matte (Ca?-4-; Mg2+). Simultaneously, a reduction in loss of metal with the slags was ob- served. 1. Slags--Surface tension--Measurement --Test results 4. Metals--Losses S.P. 2. Slags--Test methods 3. Slags Ca rd 2/2 VA N Y Li hov ) A Y 137-58-5-9348 Tiranslation from: Referativnyy zhurnal, Metallurgiya, 1958, Nr 5, p 78 (USSR) AUTHORS: Vanyukov, V.A., Utkin, N. I., Vanyukov, A. V. T ITLE: A Study of the Kinetics of Distillation of Zinc From Molten Slags (K voprosu izucheniya kinctiki otgonki tsinka iz shlakovykh rasplavov) PERIODICAL: Sb. nauchn. tr. Mosk. in-t tsvetn. met. i zolota i VNITO tsvetn. metallurgii, 1957, Nr Z6, pp 63-73 ABSTRACT: A study of the kinetics of a process in which, under the action of solid C, Zn is distilled from molten slags of various composi- tion. Ten samples of slags containing different amounts Of Si02, FeO, and CaO, and having a constant ZnO content (10%) were in- vestigated. Chemically pure substances were employed in pre- paring the slags. The rate of distillation of Zn from liquid slags is determined to a considerable degree by the temperature of the process and the composition of slag; it increases as the temperature and the content of FeO in the slag become 8reater. Acidic and ferrous slags react differently to the addition of CaO. An increase in the CaO content increases the rate of volatiliza- Ca rd 112 tion of Zn from ferrous slags and decreases it in the case of 137-58-5-9348 A 8tudy of the Kinetics of Distillation of Zinc From Molten Slags acidic slags, The process of reduction of Zn from liquid slags falls into the category of diffusion processes; this is corroborated by the values of the rate constants, the magnitude of the apparent energy of-activation, and the value of the temperature --rate coefficient. The results of the ex perimental smelt- ings justify the assumption that the distillation of Zn proceeds with the aid of metallic Fe, which is an active intermediate product of the reaction. This assumption is substantiated by the appearance of Fe beads in selected samples and in the final stag, by an increase in the rate of Zn distillation when the FeO concentration in the liquid slags is increased, and by the magnitude of the apparent energy of activation. N.P. 1. Slags--Preparation 2. S'Lags--Properties 3. Zinc--Separation 4. Zinc ores-Processing Ca rd 2/2 137-58-3-5838 Translation from: Referativnyy zhurnal, Metallurgiya, 1958, Nr 3, p 195 (USSR) AUTHORS: Vanyukov, V.A., Vanyukov, A.V., Tarashchuk, N.T. TITLE: Phase Diagram Studies of the Fe-Ni-S System (K voprosu izucheniya diagrammy sostoyaniya zhelezo-nikell -sera) PERIODICAL: Sb. nauchn. tr. Mosk. in-t tsvetn. met. i zolota i VNITO tsvetn. metallurgii, 1957, Nr 26, pp 108-119 ABSTRACT: The phase diagram of the Fe-Ni-S system was investigated up to the pseudo-binary segment FeS-NiS (35 per ent S) by means of thermal analysis, metallographic and mineralogical methods, and by microhardness studies of the individual phases, It is assumed that a compound 4NiS-FeS (with dn 61pen niaxiniuin) exists, which for.-iis an unstable; ternary, solid solution at low te.-ziperatures. At tei~-iperatures below 6250C, the -'1'NiS-F6S (con- taiiiedin the ternary solid solution) reacts with the FeS and for~-:Is a pentlandite solid solution (PSS). The PSS and a solid solt-ttion of nietals may form in industrial mattes at slow coolin- ratec. In the 'process of c'ooline, intermediate'metal sulfide products cbtained by bessemerization of mattes, N'6S5 and the eutectic N'6S5+PSS, are formed. Significant amounts of an independent N'6S5 phase Card 1 /1 form only in alloys with increased S content. R.M. VAIMOTt A.V.j UTKINO W.I. g'w eo'O~*&oj of cations on surface tension of silicate malts. ltv. vys~ uoheb; xav,; tmt, met, iuP,2t39-44 138. (XERA llt8) 10 Moskovekiy Institut tsvetzqkh metklov i zolotao rafedra mtal- lurgii tyazholykh tevetrqkh metallov.' (Base exchanging compounds) (Surface tedsion) IaSOTSKITI DJ.-I TANMXOT& A.Y.; KMffSKIT# A.Tu.j SWIROO Tus% -------------- - Ihvsvt;iga~Iv& abaft farvAce awlting of oxidezed nickel orcs by freezirg the fuiii~ce, -Irv, vyx, ucheb, sav.; taret. mt. no&21 55-70 '58. - -(K= 110) 1; Nodkovsk-ly institut tov'ettykh metallov i zolota. refedra metallurgit tyashelykh tsvetnykIL-m*tallo**' (Nick8l-~~Stallur&7) AUTHORS: Vanyukov, A. V., Utkin, 11'. 1, SOV/1063-53-71-4/49 TITLE: FeO-SiO 2 -CaO Surface Tension of the Melts in the Systems ' (Poverkhnostnoye natyazheniye rasplavov sistemy FeO-SiO 2- CaO) PERIOD7CAL: Nauchnyye doklady vysshey shkoly. lletallurgiya, 195B, I ir 3, pp 22 - 24 (USSR) ABSTRACT- The surface tension of the melts in the system FeO-SiO 2- Cao was determined. The experiments were carried out with synthetically produced melts in hermetically sealed furnaces at 13500 in gas atmosphere. From the diagram of the surface tension of the melt may be seen that an increase of the Si02-content in acid ielts effects a decrease of the surface tension, but Uat a substitution of FeO by CaO causes the surface tension to increase. The decroaae of the surface tension by increasing the acidity of the melt is explained by the increase of the capillary activity of the complexes in the melta. The complex anions accumulate at the surface of the melt find Card 1/2 reduce the surface tension. The substitution of the Surface Tension of the Melts In the Systems SOV1163-56-3-4149 FeO-SiO 2- CaO 2+ 2+ cations Fe by Ca leads to a destruction of the silicon-,oxygen complexes, to a decrease of the capillary activity, and consequently to an increase of the surface tension in the silicate melts. There are 1 figure, 1 table, and 7 references, 6 of which are Soviet. ASSOCIATION: Moskovskiy institut -rsvetnykh metallov I zolota (Moscow Institute of Non-Ferrous Metals and Gold) SUB14ITTED: January 16, 1958 Card 2/2 VANMOV. V.A. [6aceasod.1; VAIMKOV, A.V.; TOWPOYA, T.G. Decomposition of zinc ferrate by sulfur dioxide and sulfur trIoxids. rsv.TYB* ucheb. zav.; tovet. met. n0-3:66-67 ' 58- (MIRA 11:,U) 1. I~bskovokiy inatitut tovetnykh metalloy i. solotas Saverokavimsakft gorrLonotallurgichaskiy inatitut. wnc ferrates) (Sulfur oxides) f AUTHORS: SOV/149-58-5-4/18 Z,K, A.V. and Odinets, Vangukov , , TITLM-.. 0 Pot04 on the :rom of Metal Losses in Slags (0 form' metallov so shlakami) pnIODICAL-. Izvestiya V7sshikh Uchebnykh Zavedeniyj Tavetwa Meta.llurgiya, 1958, Nr 59 pp 27 - 37 (USSR) ABSTRACT: Waste slags constitute the main source of losses of metals during their extraction by pyrometallurgical aetho&B. Accaxbng to iR rcqgft e9dzata,.low(,zkn& of 'the ackol eoltizrb in the waste slags pr6dueed by the Yuzhura:11- nikel Combine Vy -only 0.01% would result in an sannual saying of 3.5 million roubles. There are indications that metals can be present in slags in the form of dissolved sulphides, mechanically entrapped matte inclusions and various silicates and 6xid6s, but data on tho quantitative relationship between these various forms-of metal losses~are lacking. Solubility of FeS, CaS &ad MgS in slags is said to be high, that of ZnS; limited, while data on the solubility of NiS, Cu2S and CoS are contradictory, Cardl/8 The object'of the present investigation was to determine On the Form of Metal Losses in Slags SOV/149-*58-5-4/18 the effect of various factors on the relative concentration of nickel, copper and cobalt in the matte and in the slag. The composition of the experimental slags is given in Table :L. They were synthetised by melting under nitrogen, in iroja crucibles, cii"Icullated quantities of ggyalite, pure sio, powder and reactive CaO calcined at 900 01 the final pro uct being ground to 60 mesh, Fayalite was prepared in the same manner from ferric oxalate and pure S102 powder and according to the results of microscopic examinat- .ion no magnetite was present in the final product. The experimental mattes were prepared from pure sulphides melted in alumina crucibles under purified argon~ The iron and nickel sulphides were obtained by passing H2S over "Armao" iron.shavingo and nickel powder at 700 and 900 C, respectively. The copper and cobalt sulphides were prepared by direct fusion of the components in grsibite crucibles. The chemical analysis of the sulphIdes is given in Table 2. Radioacti~ve tracer technique was used for determinatiou card2/8 of the, form in which the investigated metals were present On the Form of Me'ml IAsses in Slags SOV/149-58-5-4/18 in the :slag that had been melted in contact with a,zatte of a given sition. On the assumption (later Y'erified experimenta y that g6119he not solu'bU'-in slag, a radio-active isotope Au had been tattoduced into all the experimental mattes. On the compl"btion of each experiment in wliich matte of a given composition was melted under purified argon (partial oxygen pressuret less than O._6 x 10-11 atm) in contact with one of the experimental slags, the radioattivity of the slag was therefore.proportional to the amount of the matte - inclUB.'Lons mechanically entrapped in the slag. On the assumption that the composition of the matte inclusions was the same as that of the original material, the quantivy of metals carried by these inclusions was calculated from the known values of the radioatitivity of the slag and the matte. The total metal content of the slag was determined by chemical analysis and the quantity of metals dissolved in the slag was found by difference. Card3/8 The experimental apparatus .is illustrated diagrammaticilly SOV/149-58-5-4/18 On the Form of Metal Lossfes in Slags in Figmre 1 and the results are reproduced graphically. To check the Pliability of the radioactive tracer technique, one series of experiments with a nickel matte was repeated under the same conditions using the following method. A small, cylindrical crucible provided with a small orifice half way up its wall was placed in a larger crucible. The nickel matte was placed in the small crucible below the level of the orifice. Slag was placed in both crucibles, its level in the large crucible being slightly larger than in the swLll one. it was assumed that small dimensions of the orifico in the smaller crucible would prevent the matte inclusions finding their way to the slag contained in the large crucible, so that the total metal content of this slag would correspond to metals dissolved in the-slag. As can be seen from Table 5, there was a close agreement between the results obtained by the two different methods. The effect of replacing FeO by CaO on the distribution 8f Cu, Ni and Co in the slag ot constant acidity at 1 300 0 is shown in Figure 2. Scale on the left side - dissolved Hi (Curve 1) and Cu (Curve 2). Scale on the Mht side - Card4/8 dissolved Cu (3), mechanical losses of Cu (4 and Co (5). On-the Form of Metal Losses in Slags SOV/149-58-5-4/18 The effect of acidity of the slag is shown in Figure 3: left - dissolved Ni (1) and Cu. (2), mechanical losses of Co (5); right - dissolved do (3), mechanical losses of Cu (4). Figure 4 shows the effect of the sulphur content of the matte with a constant metal content on the quantity Of MetELls dissolved in the slag; Curve 1 - Ni, Curve 2 - Cu and Curve 3 - Co. The effect of the metal content of the matte (at constEmt S content) on the distribution Pf metals in the slag is shown in Figure 5: left - di4itolved Ni (1) and Cu (2) and mechanical losses of Co (5); right- dissolved Co (3) and mechanical losses of Cu (4) and ffi (6). The effect of temperature is shown in Figure 6; left - dissolved Ni (1) and Cu (2): right - dissolved Co (3) and mechanical losses of Cu (4) and Co (5). Figure 7 shows the effect of the oxygen content of the matte on the quantity of copper dissolved (Gurve 1) and mechanically entrapped (Curve 2) in the slag. The effect of the temperature, matte composition and replacing FeO by CaO on the solubility of FeS irL the slag is shown in Figure 8, that of the acidity of-thet slag, matte composition and temperaiture is illustrated Card5/8 in Figure 9. On the Form of Metal Losses in Slags ' -POV/l*9-58-5-4/18 The results of the present--investiGation show that: (i) in a neutral atmosphere, the quantities of Ni and Cu dissolved in th6'slag amount to little more than 0.001 and 0.01%) respectively. Owing to higher solubility.of CoB and the reversibility 'of the rea'q'tion CoS + (FeO) FeS + (CoO) the amount of Co dissolved in the slag is considerably higher and can exceed 0.1%i (ii) the quantity of metals dissolved in the slag depends to a large extent on the Fe 0 content of the matte and 3 4 on the composition of the gaseous phase. The higher the Fe304 content of the matte and the higher the proportion of 0 present in the gaseous phase the higher is the propgrtion of metals dissolved in thi slag. Presence of oxygen-bearing nickel compounds in industrial slags obtained dv,xing smelting of nickel oxide ores,can be explained vither by.the fact that the sulphiding reaction does not proceedto completion, or by the entrapment of the burden Card6/8 fines in the slag. This means that nickel losses in the SOV/149-58-5-4/18 On the Iform of Metal Losses in slags slags ca;m be 'considerably reducea 'by 'a'"pplication of preliminary aulphiding treatment.during the-sintering process and by improving the quality of the sintered agglopierette. It is also necessary to limit to a minimum the Fe~,O,, content in the raw agglomerate by sintering in a tube furnace. Lowering of the magnetite content in the sinter cake entering the reverberatory copper smelting furnace can be attained by introducing a reducer in the bottom.bigarth of the sintering furnace. The practice of introducing the converter slags containing a large proportion of magnetite in the reverberatory furnace is not to be recommended; (iii) losses of Ni and Ou in the slags cmur mainly by way of the mechanically entrapped matte inclusions. These losses become smaller under conditions which favour the coalescelace of the sulphide droplets and their separation from the slag. The fact that with increasing acidity of the slag the mechanical losses of metals decrease indicates that in some cases the surface properties which govern the Card7/8 process of coales .cence are of primaryimportaneei SOV/149-58-5-4/18 6r, the Form of Metal Losses in Slags (iv) since increasing the texperature'lowers the proportion of mechaxtically entrapped matte inclusions without significantly increasing the quantity of metals dissolved in the slag, it appears that in.ordbr to lower the total metal content of the waste slags the melt should be overheated.. The're are 9 figures, 5 tables and 24 references, 16 of which are Soviet, ? English and 1 german. ASWQIMIOIR:' Moskovskiy institut tsvetnykh m-etallov i zolota. Kafedra metallurgii tyaghelykh.tsvetnykh metallov. (Moscow Institute of Non-ferrous Metala and Gold. Chair of Metallurgy of Heavy Non-ferrous Metals) SUMITTSD: July .16, 1958 Card 8/8 AUTHORS: Vanyukov, A.V. and U .tkin, N. I. BOV/149-58-6-5/19 TITLE. The Effect of Temperature on the Surface Tension of Silicate Melts (Vliyaniye temperatury na poverkhnostnoye natyazhe'diye silikatnykh rasplavov) PMODICAL: Izvcstiya Vysshikh Uchebnykh Zavedeniy~ Tsvetnaya Met,'illurgiya, 1958, Nr 6,pp 43 - 48 (USSR) ABSTRACT: The temperature dependence of the surface tension of binary silicate melts was extensively studied by King (Ref 5) who used a modified ring metbod for measuring the surface tension. King established that the temperature coefficient of the surfa--e tension of some mixtures was positive and that it increased with iner,--asing acidity of the melts and with increasing field strength of the cations, ~.-the latter effect having been also observed by Boni and Derge (Ref 3). On the other hand, it had been found by other investigators (Refs ?,8) that the surface tnsion of the Fe0-Si02 and FeO-Fe2O3 systems was practically unaffected by the temperature variation. The present authors studied the surface tension a of yarious synthetic silicate Cardl/5 melts in the 1 200 - 1 400 0 teiperature range using the SO';/149-58-6-5/19 The Effect of Temperature on the Surface Tension of Silicate Melts method of the maximum pressure of a gas (nitrogen).bubble, the expeximental technique having been described elsewhere (Refs 91 10). The effect of the temperature on a of the melts of the FeO-SiO 2-CaO s~tstem was studied on seven mixtures representing typical slags :ormed in a majority of processes used in extraction of non-ferrous metals. The composition of these experimental slags (in mol%) is given in Table 1, the last column of which shows the acidity of the melts as measured by K = O(SiOd/oVeo) The results of the first series of experiments are given in Table 2, showing the values of a (in dynes/cm) at various temperatur8s and the temperature coefficient of a (in dynos/cm per C) for the investigated temperature range. With the exception of the melt containing the maximnum proportion of CaO, the temperature coefficient of a was positive and its magnitude increased with the increasing FeO/CaO ratio and with increasing acidity of the melts. In the second stage of the investigation, the Oard2/5 effect of temperature on a of melts of the SOV/149-58-6-5/19 The Fffect of Temperature on the Surface Tension of Silicate Melts FeO-SiO 2-Me2o(MeO) systems was studied on mixtures containing (in mol-%) 34.5 FeO, 43 SiO and 22.5 Me2o (an alkali metal oxide) or MeO (an alkaline earth metal oxide). The temperature dependence of a of the melts containing K20, Na-0 and L12o is sbown in Figure 1 (graphs 1, 2 and 3, reWictively). The same relationship for the melts containing BeO, BaO, SrO, CaO and MSO is shown in Figure 2 (graphs 1-5, respectively). The relationship between the temperature coefficient of a of silicate melts and the ionic potential 41 = Z/r of some cations is illustrated in Figure 3. The surface tension of the melt containing K 20 decreased with increasing temperature and the temperature coefficient of a of the melt containing Na20 was equal zero. In all the other cases the temperature coefficient of cr was positive. The following conclusions were reached: i) the temperature dependence of a of the investigated silicatemelts containing PeO confirmed the Card3/5 micro-heterogeneity of melts of this type; ii) the high SOV/149-58-6-5/19 The.Bffect of Temperature on the Surface Tension of Silicate Melts. degree of micro-heterogeneity exhibited by the melts in the presence of the Fe 2+ eation is caused by oxygen breaking away from the complex anions and by the eybotactic groups consisting of complex anions and weak cations being forced out to the surface layers of the melt; iii) in the case of the cations of the alkali and alkaline earth metals characterised by ionic potential lower than J. the micro- heterogeneity of the melts containing the Fe ions increases with the decreasing field strength of the cations and the temperature coefficient of a correspondingly decreases ; iv) the decrease of the temperature coefficient of o, observed when CaO is substituted by MgO or BeO is an indication of the tendency of the Mg 2+ and Be 2+ cations to form complexes;' v) the increase of the temperature coeffioient of a of the melts of the FeO-SiO2-CaO system repulting from the increase ratio of the acidity and of the FeO/CaO/is associated with the breakdown of -the silicate anions and with homogenisation Card4/5 of the melt; vi) the magnitude and the sign of the SOV/149-58-6-5/19 The Zffect of Temperature on the Surface Tension of Silidate Melts temperature coefficient of a of silicate melts is deter- mined by: a) a decrease of the strength of the forces binding the ions; b) breakdown of the complex anions resulting from weakeang of the bond bet*een the 2+ 2- 1 Fe and 0 ions and c) homogenisation of the melt at higher temperatures. The decisive part played by the two last factors can be inferred from the positive values of the,.-'. temperature coefficient of a of the majority of the investigated melts. There are 3 figures, 2 tables and 14 references, 12 of which are Soviet and 2 English. ASSOCIATION: MoskoVBkiy intitut tsvetnvkh metallov i zolota. Kafedra metallAYgii tyazhelykh tsvetnykh metallov (Moscow Institute of'Non-ferrous Metals and Gold. Chair of the Metallurgy of Heavy Non-ferrous Metals) SUBMITTED: January 14, 1958 Card 5/ 5 b, VAMKOV, A nickel ores ,etallurgy of or ifew oroceflSes in Russian (MIRA Opp- TSvet meto 31 no, 7:30-34 J1 158. 1. mintfivotmetzoloto* __Metallurgy) (Ilicke 18(6) AUTHORS; Yany-jkov, A. V., Utkin, N. I. SOV/163-59-11-3/50 TITLE: Influenco of Chromium Upon the Surface Tension in Ifickel-evelt Slags (Vliyaniye khroma na poverkhzioutnoye natyazhaniyo ihlakov nikelevoy plavki) PERIODICAL: Nauchnyye doklady vysshey ahkoly. Vetalluraiya, 1959, Nr 1~ PP 11-13 (USSR) ABSTRACT: Reference is made of the fact that by an addition of as little as 0.001 gram mals of Cr 203 the surface tension of glasses is reduced by 200-225 dynes/cm, which phent')menon has been dis- covered by Appen et al. (Ref 3). The work reported in this paper was carried out to check this allegation, The influence of chromium upon the surface tension (a) in the slags of smelts of oxidized nickel ores was investigated, The surface tension was determined according to the method of the maximum pressure of a gas bubble (nitrogen) at three temTeratures, at 1,300, 1,350, and 1,4000 (Ref 4)- Synthetic slags, fused from chemi- cally pure oxides, were used in the experiments, Ferrous oxide was added as iron silicate (2FeO.SiO 2) . The Cr 203 Card 1/3 content in the slags varies from 0 to 5 0ifa. It appears from Influence of Chromium Upon the Surface Tension in SOV/163-59-1-3/50 Nick3l-smelt Slags the experimental data that the surface tension decreases if the chromium oxide content increases. The concentration decrease of Cr203 lies at about I ~lo. The surface tension decreases by alout 5 dynes/cm. It is shown 'that the decrease of the surface tension with increasing concentration is con- nected with the increase of the capillary activity of the complex anions. This is also demonstrated by the positive temperature coefficient _id , of the slags investigated. The dT experimental information, however, does not indicate such a pronounced decrease of a with an increase of the Cr20 3 content In the slags, which with glass has been found by Appen Ref 3). It was found in the course of the experiments that the in- crease of the Cr 203- content in the slags results in a decrease of the interface tension (cr 1,2 ) at the boundary between the slag and the iron crucible. A similar influence of the chromium upon the variation of the surface tension a should be Card 2/3 expected to occur at the boundary between the slag and the Influence of Chromium Upon the Surface Tension in SOV/163-59-1-3/50 Nickel-smelt Slags lining, which forms during the melting of oxidized nickel ores in cupola furnaces. The reduction of the interface tension is closely connected with the ability of chromium to disperse among the liquid smelt products. A low interface tension is an inconvenient phenomenon, as in this case the separation of the liquid smelt products becomes more difficult and the losses of valuable metals in the slags increase. There are 2 tables and 8 references, 7 of which are Soviet. ASSOCIATION: Moskovskiy institut tsvetnykh metallov i zolota (Moscow Insti- tute of Non-ferrous Metals and Gold) SUBMITTED: May 26, 1958 Card 3/3 --.--VANTUKOV, A.Y.; CHNOU CHMUMMA [Chou Chung-hual Kinetics of iron oulfide oxidation, Izv,vys,ucheb.zav.; tovet. met. 2 no.1:41-50 '59. (mrRA 12:5) 1. Mookovskiy inatitut tevetnykh metallov i zolota. Kafedra metallur- gii tyazholykh tevetrqkh metallov. (Iron oulfidns) (Ore dressing) k~ VANYUKOV. A.V.; CHZHOU CHZHUIT-MA [Chou Chung-hual ~Ke`chanism of iron sulfide oxidation. Izv. vys. ucheb. zav.; tsvet. met. 2 no.2:29-34 159. (NIU 12:7) l.Hookovskiy inotitut tovetnykh metallov i zolota. Kafedra motallurgii tyazhol.vkh tsvetnykh metallov. (Iron sulfides) (Oxidation-reduction reaction) 18-5000 753'84 AUTHORS: Vanyukov, A. V., Montillo, 1. - ------------------------- TITLE: Study of Calcium, Iron, Nickel, and Sulfur Diffusion in Liquid Slags PERIODICAL: Izvestiya VYS3hIkh uc~ebnykh zavedenly. Tsvetnaya met- allurgiya, 1959, Vol 2. Nr 5, pp 60-67 (USSR) ABSTRACT: Diffusion determines in many cases the course of met- allurgical processes. The work done on diffusion in liquid slags mostly covers transfer of matter In a system CaO-A120 3_8i02, Problems of mass transfer In nonferrous metallurgy are not adequately studied as yet, Therefore the authors undertook a study of the diffusion of calcium, sulfur, Iron and nickel In molten .alag containing 39.9% S1021 21% Cao' 19.1% FcO, 9.8% Al 0 and 10.2% MgO. To trace the transfer of matter, Card 1/4 2 Y 45 Fe59, and N163 were radioactive isotopes Ca , S35, Study of Calcium, Iron, Nickel, anj Sul-fur 5 3 8,4 Diffuolon In J'Aquid Slago Is G.'i used. Slags were prepared with chemically pure oxides and fayalite, melted In an iron crucible in a 5tream of purified nitrogen. Melting was done under vacuum (less than 10-3 mm Hg). The degree of diffusion was determined by dipping a corundum capillary filled with neutral slag Into a slag bath tavged vilth a radlo- active Isotope. Upon diffusion, the capillary was sub- jected layerwise to a radiometric test. ThIa method' permIts an accurate evaluation of the duration of process and shows a clear boundary of cclntaetln~ masses. It eliminates convective mixing. The data so obtained indicate that nickel, iron, and calcium are diffused as simplest ions. The diffusion coefficients obtained experimentally for sulfur as well as the activation energy of mass transmission suggest the possibility of an electron exchange between sulfur and oxygen ions with the help of iron, as shown by Kozheurov, V. A. The smaller the size of a particle, Card 2/4 the greater Its transfer velocity and the lower Its Study of Calcium, Iron, Nickel, and Sulfur 753814 Diffusion in Liquid Slags activation energy. When the content of' CaO in 31ag rises from 18% to 21%, the diffusion coefficient of nickel (at 111000) changes from 5.87 - 10-6 to 7.79 010-6. A'small difference In the energy of' diffusion activation between the two slags indicates an increase In the number of holes in the slag caused by the CaO addition. This ic confirmed by a study of the viscusIty. There are 7 figures; 3 tables; and 34 references, 24 Soviet, 2 Japanese, 6 U.S., 1 British, 1 German. The most recent U.S. references are: Towers, H., Paris, M., Chipman,J J.Metals, Nr 11, S 1, 1455, 1)53, and Vol 9, Nr 6, ~69, 1357; Li, J. C., Machang, P., J. Phys. Vol 23, Nr 23, Nr 3, 518, 1955; Hoffman, R. E., J. Chem. Phys., Vol 20, Nr 10, 1567, 1952; Tomllrison, J. W., Phys. Chem. Metals, 1953. The British reference is: Crank, J., The Mathematics of Diffusion, Oxford, 1956. ASSOCIATION: Krasnoyarsk Institute of Nonferrous Metals. Chair of Card 3/4 Heavy Metals Metallurgy (Krasnoyarskly InFlAtut tsve- Study of Calcium, Iron, Nickel, and Sulfur 75384 - ~ V`-e Diffusion in Liquid Slags ." a nykh metallov. Kafedra metallurr4ll tyazhr,,lykh met- allov) SUBMITTED: April 22, 1959 Card 4/4 VANnMOV, A.V.;.. IONTIL10, I . Chemism of sulfidising in shaft furnace smelting of oxidized nickel ores. Isv.vys.ucb9b.xa,v.; tevet.met. 2 no.6:66-75 '59. (MIRh 13:4) 1. Krasnoyarskii institut tevetuykh netallov. Kafedra metallurgii tyashelykh tevetrqkh metallovq, (Nickel ores--Metallurgy) (Or; dresaing)