SCIENTIFIC ABSTRACT LEPESHKOV, I.N. - LEPETOV, V.A.

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December 31, 1967
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SCIENTIFIC ABSTRACT
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The Isothermal Lines of thr~ 3ol,ibil4~ty of the Syotem K so -Na at 750C 2 4 2 4 Potassium sulfati~ - (K230 4) Leonite - (K SO 11gso,64H 0) 2 4* ' 2 Langbeinite t - (K2SO 4* 2MgSO 4) Kieserite - (MgSO 4*H20) Leveite - (,NU 2SO 4* MgSc 4* 215F,20) Van't Hoffite - Olfa2so 4* MgSO 4) Glaserite - (3K 2SO 4' Na 2so 4) Tenardite - (Na2 so 4). The results obtained are important for the working o'-t separation methods of production of poturju," There are 6 figures, are Soviet. potassium-magnesium salts and for um sulfutq. 5 tablc~, a::d 23 reference.,3, 11 of of th,~- wh-*,-:~ SUBMITTED: April 4, 1958 Card 2/3 scv/78-3 -12-26/36 AUTHORS: Lepeshkov, 1. N., Bodaleva, 11. V., Kotriva, L. T. TITLE: Investigations Concerning the Solubilities of the Systems Li2so 4-Na2so 4-K2CO 4-H 20 at 250C (Issledovaniye rastvorimoati v sisteme Li 25o 4-Na2so 4-K2so 4-H 20 pri 250) PERIODICAL: Zhurnal neorganicheskoy khimii, 1958, Vol 3, Nr 12, pp 2781-2785 (USSR) ABSTRACT: The solubilities of the systems Li 2so 4_11a2so 4-H20 were investi- gated at 250C. The isothermal lines of solubility of these systems have three branches, which correspond to the following crystals: Li 2so 4' H201 double salt Li2 so 4' 311a2so 4' 12H 20, and Na2so 4* 10H20. The double salt crystallizes to large, perfect crystals with the following indices of refraction: N9 - 1-464, NP 1. 1.460. The solubility of the system Li 2s0 4- K2so 4- H20 was investigated at 00, 250 and 500C. The double salt Li2so 4'K2so4 and the solid solution which forms lithium sulfate Card 112 with Li 2s0 4'K2 CO4were determined. The double salt Li 2 so 4'K 2so4 SOV/78-3-12-28/36 Investigations Concerning the Sclubilities of the Systems Li 2so 4-Na2so 4- K2so 4-H20 at 250C crystallizes in bipyramides with the following refractive indices: fig . 1.474 and Np . 1.471. In the quaternary system of Li2so 4-Na 2so 4"K2 so 4-H 20 at 250C there exist crystallization areas of the following salts: Li 2so 4'H20, Li2so 4' 311a230 4' 12H20' Na2 so 4* 1OH20, K2so 4, 3K2SO4 Na 2SO4 , L'2SO4 K2SO4 , and the compound 2 Li 2 so 4' Ila 25o 4'K2so 4' There are 2 figures, I table, and 9 references, 5 of which are Soviet. SUBMITTED: June 5, 1958 Card 2/2 2 c 2 81 AUTHORS: Lepeehk,:)7. 1. 11. Rsma3heva. IT, N., 71 K. TITLE: On the Pota3siam Ccntert nf Salt Dop,~,-jj,tL4 ~o T-,;t (0 kaliyenoano-At: Folyanykh ot-1czhqn!y T:ivy) PERIODICAL: Doklady Akactam' -1 nauit SSSB 1956 V.~ 1 (USSR) ABSTRACT: In the dietrir-, of tho autonomo,.-3 reg-c:, rf T-j~-i aal- lakr-, and oour,:o9 as well. ae fhr, 4a., r1Ap,-:z;,t T:,,. T,.o~ mountai:..) k-r,,wr - a ong timi i-,, th, ac-thfrn L;pz the weaterr. Ta,in, 01-i km of Ky;,y.l A survey of Plbllcfltifm~ u-~i dpseript;on rf tLe lakt~s and -Vf the ;al, lep~.,Imi are -6). In the prasort paper the salt sedim~rtq cxl tii" Tuz.-Tag ar3 -laking into acc,.~,jzt th~ and t;thir marlr~,. sal--. In a oheoicu', con G I d,~ r able quan'-.4.- ; vf-, -~,f po~aiaium chlorid~7, were foun,l ( ap t-~ 6'- ~!,) ~ Table I showa c,hemicil ana'Ayt:-es ~f !3,)mf? -A;il,, I,j mr,,,V~7 of which it lxz to bo Ejeen that it Jrit~i 'A high Purthermor6 rovis of Yjorir,i;~ --arr-Led ,)~t Card 1/2 by the M-:.ning Expeditlcn "Gorro. 1!1',~vlo.-iilneiik.~y,~ 2 9 6 2 C- On the Potassium Uuntent -.f Sal Deposit a In T!it i ekspeditqiya 19; from diffizent Many cor4s )y *hc.sg whi -h ~7ji a :in :1 13,7 Kr as well as a yellsw wers 7~,A t on this c,7-~aai(,r. p : -a jAl-,m and m agrj t Z i d 't. a ed out ta a hign Aria'ys&Ll ~f ---:!nta.r1ir;g clusions within Qove4 are shown -~y tab:t- 2. F-j,r- 2 shcws the di9tribitior. c-f --E-ar, war,;~r it; T-ipti d-~-irig Uppe: Si,;iriun. aad Lower Davoniar- from which th-.~ mer;tionel dc~p~3its originatp. There az-2~ 2 figur&4 2 tabies ar,~! 6 of whi-h ix~ Sovi--it. ASSOCIATION: Institut :)b,3hch-3y i n9orj3anich4-jKC.Y lm. N. S. Yiirr)~Azc- i t Akadem-'4i vauk SSSR .:f Gt-n:~:-v and imeni N. S. Kurnak,:,i AS USSR; PRESENTED: September 14~ 1957, by I. I. Chernyaye-), 1,11ember. Acaaemy of Sciences, USSR SUBMITTED; September 5. 191513 Card 2/2 AUT110il,S: Lepashkov, 1. 11., Yh. B., JC*1/2o-12(j-1-21/(,F TITLE: Carnallite and Sl-n~,enito in the Doposit of the Sultlal:e of Dzhmk3y-Klych(Pr_;,,ral1ye) ( Karnallit i ninCenit v o1,lo-.1._--niyakh solyano,go ozera Dzha':sy-Klych (PriarLllyo)) PERIODICAL: Dokl--dy Al:ademii S,SR, 1950, Vol. 12o, Nr 1, PP- 03 - 85 (USSR) ALSTRACT Cal ium-containing mi.,.orals occur verb- rarely in the deposits of recent salt la!-cz;. The la'-a -.cntiQneO. in the title cont.,.14,nine the deposits mentioned ir, situated 2o km north-c"ot of Ara-11- okoye. Be3ideo concu!;Lv:ttr,,(1 wAt nollitiono, aloo ,i~At dapr).-its in for;- of astrach-~ni',c (Na2so 4' "";S04"11120), mir,;~Jilit(!Ia2so.. 4 .1011 0), tenardit (Na,SO and _-.a,-nenium culp~i_te, hepta-, he."i 2 ) and fi- wid pentahydrate zand further :laii~-erite (Na 2SO 4-~_ so 4 nally i;ypsite (CaSO 4* 2!120) occur here. The total thicknnoo of the layer reached 4,5 to 5m. Underneath a thick uji,cr layer of nL1t the two firzt-ne,-,tio.-,Pd :,iinerals are to be fouIO in the Card 1/3 orfler ri,,entioned. The ,ulphato hydr-tes occur in for:i Carrallitc -.nd Sjn,:enite in the Doi)o.-it of t!i(- S It- JOV/2o-12o-1-21/63 la':e of Dz11v_,'.rj.--Kljch (Priarallyej of crystals in the lorter d.,.rt of the astrachanito lzLyer to-ether with gypoite. Betwocn the cit.:.1ern of crjEstals thin cryst~~Ili:.(_, inclusions of the latter mi7.eral, oyn.,,-'enite, and Mi;-pentuh4r- drato (table.1) are to 1~e found. Cryatal-optical const~i:.to of sjnthetic and natiira.l syn.-o.,ite .ro mentioned. The heati;ie' cui-ve of the sodium chlorite of V.-in 1,,~!:e ncntioncd shows thu=al effects which indicate a conter.t of ayn6enito and antracb-tnito and also of the hydratoi mentionefl( figure 1). The for::.in,,- of oyni,enite is probably t; rcoult of interaction between Une iJ~o Gult nolutions containint; KC1 u.) to 2~ and gypoite. Syri,,enite is a rarety. Its oynon~,mus 13 c.-Juncite (Reference 2). T.e cry- stallization of carnallite was broujht about by evaporation of salt solutions in sum,-xr. In addition, the magnesium 3ulphate hydrates and binchofites (11'e'l 41:. 6H20) mentioned are for;ied. Tzilb- le 2 describes the che7~ical anVmineralogrical analy3is of tKe salt of the lake slirface, fiL-vre 2 shows the heating curve of this salt, which consint3 of thQ three laat-mentioned salts (includine nacnesium nulphatc-hexahjdrite). There are 2 fi6urcz, Card 2/3 2 ti.,_blea and 2 refereizcesp which are Soviet. Carriallite and S,7nL;enite in the De~josit of the Salt- 60'1/2o-12o-1-21 /67 lake of Dzhakay-laych (Priaraltye) ASSOCIATION: Inatitut obohchey i ncor,;anichaskoy khinii in. IN. S. Kurna%ova A!,ademii nauk SSSR (Inutitute of General and Inor6anic Chemi- stry imeni N. S. KurnakovAS USSR) PRESENTED: Nove;iber 1, 1957f by I. I. Chernyarev, Memberp Academy of Sciences, USSR SUBMITTED: October 31, 1957 1. Inland waterways--Sedimentation 2. Minerals--Sources 3. Minerals--Chemical analysis Ca-d 3/3 LIPISUDY, I.N.; UJK'YANOVAS Y".1. Physicochemical study of natural salta and watqr - nalt systems of the sea water type. Itogi ritukle. Xhim.muki 4: 62-91 '159. (MRA 13:4) (salts) (Systems (ChomiatrY)) 5(2) SOY/70-4-8-42/43 AUTHOR: Lepeshkov, -1. N. TITLE: Symposium on Geochemistry, Mineralogy, Chanis.try, and Chemical Technology of the Mineral Sa2ze in Berlin (German Democratic Republic) (Simpozium po geokbimii, mineralogii, khinii i Irbi-Joh aka4 tskhnelsgi~. minerallnykh salay v Berlins (GDR)) PERIODICAL: Zhurnal-neorganichaskoy. kbisLii, M9, Vol 4, Mr-B, pp 1939-1940.(USSR) ABSTRACT: The symposium was convened by the (East German) -Academy of Sciences and took plaes-froz Jun 16.,22, 1958. Representatives of scientific institutes, and, antexpriaes of halur y of the -Ga.rman D%ma~x&tic.R*pu]Pl1cp.tb* Sc,YAAt.Un4-n, Francs and the G&xxan Fsd&z&l.Rsp"1Ac.a.Lt&nd*d the Aympaa-tum. 2.a Ise-tures were heard, -Tht.f ollowing Savlst aoientlsts- took part: from the Inatitut,ob-shahey i nearganiAhaskay k-himli -ime N. Be Kur- nakeva AN SSBR ("stituts. of-Gaaaral axLd Inorganic Chemistry i.mani S. S. rurnal-ov of the AS USW.: .1. 11. Lap2zhkav, AN. P. Luzhnaya, M. I. Ravich, G. S. Sedellnikov; from Moskovskiy gosudarstvennyy universitet im. M. V. Lomonosova (Moscow Card 1/4 State University imeni M. V. Lomonosov): M. G. Valyashkol SOV/78-4-8-42/43 Symposium on Geochemistry, Mineralogy, Chemistry, and Chemical Technology of the Mineral Salts in Berlin (German Democratic Republiz) from the Vaesoyuzayy wmahno-isaledovatallskiy Institut galur- gii (All-Union Scientific Reaearob. Inatituts for Halurgy): Vs, V. Vyazovey and A. V. Zdanava"y4 from tba Lenlngradakiy elekt rot sichn' ahsakiy ijutitut (laningrad Inatitute of Electri- ca.1 Ugineezing): YA. 1. Al-b-mayj from the LsningradjJdy vaesoyusnyy nauahnooisAlsdaystallskiy inatl-tut geologii Arktiki (Leningrad All_qCnian Satontifiz Reasarcli lastitute for the Geology of the kr-ati-a) No S. Spixo,; from the Solikamakiy kaliynyy kojabinat (SaliJcamzk Pollan-i-In Kombina_t): A. K. Shi- shakoy,, and from the BAr-azoileavakiy kbimiabasIdy kombinat (BereznIki Chemical Yeahinat~): V. Me NasteraWco. The representa- tives of the USSR dalLverad the following lactuxes: Is No Le- peshkov: "On Some Inveetigations Carriad out by the School of No So.Kurnakey in the Fiald..af Physizo-chemioal An&lysis of Natural Salts and WAtax - SA'It' - Equilibzi* in Systems of the Unrins, Type"i No P_. LuAbmaya (an her own babal and on beha. 1f of th4 co-author Yee I. Luklyanova): "on Metamorphization of Natural Brines of Marine Type"I G. S. Sedelinikov: "On the Card 2/4 State of the Hydrochomical Processes and the Formation of SOV/78-4-8-42/43 *Symposium on Geachemistry, Mineralogy, Chemistry, and Chemical Technology of -the--Minaral Salte..in Berlin (Goxnan Demorratiz Re-public) Card 3/4 Salts in the Kara-Sugaz-Gal Bay!'; Me Go Va4azhkol. "The Most Impartant GeochemicalCharaotariatio Valuas, Which Dat.ermine the Formation of Me I. Ravieb: "Hete~rcv geneaus Squill ri in Slatema.WiLtAr - Salt at 11igh.Tezparatures'l A. V. ZdanovAkiy: "lave sAlgatizn of the..Xine.tias of the Dis- solution. of Natural- Salta!,; V. V. VyazayDv 110.n the Investi-P gat,i."z of tbLa_A11.L#Uniou Scientific Researoh Institute of Halurgy in the YialA of the Processing of Potassium SaJAs". The folloxJLng Raxt Goxman experts. dollvered reports: 1. Rombok, W* Huppe,.. Ca M"r, W. Jung, 0. i~raxahtdl, As. Harmann (Inatitute of Mineral Salta) r*poxtad on..txace alamenta in salt- and xud. sedizoAts (ma, Za, Fk, Sn, Al-sta). Gx"t a-ttantion is paid to, tha agredhemIcal., efle(tt-af, thase alamenta whIALh penetrate the soil with the pot&ssium_far_tilix*x. pxofAaxor F. Sarovy (Director of the Institute of Mineral Sal-to of the.Aqadazy of Sciences Berlin (Beat Garmany)) reportaA -on the composition of carnallite aad the utilization af magn sium cUarjAs lyes. Fe Buoh (Scientific Research Institute of the potassium indus- try, Sondershausen) dealt with the dehydration and the de- composition of biachofite. Me Tittel reported on the gradual SOV/78-4-8-42/43 Symposium on Geochemistry, Mineralogy, Chemiatryt and CbAmIcal TachnOlOgY of the Mineral Salts in Berlin (German DwwazatIa Rapublic) dehydration of carnallite. The Thaelmann"Kali-Kombinat and various towns of East Germany were visited. Card 4/4 :51C2), 3(5) A 1j TH oil Lepeshkov, 1. 11. scv/7116--: - I o --,' -,/"0 TITLE: Fhyoical-chemical Investigation of Natural Salts of Tsaidam, (Chincse People's Republic) PERIODICAL: Zhurnal neorganicheskoy khimii, 1959, Vol 4, Nr lo, pp 2414 - 2415 (USSR) ABSTRACTs Thc, Toaidam Basin lies in the province Ch1Jbg--hai,-1-n the north- east of the lake Kuku-nor (Abstractt:r1,, No,~u: Ubviourly a tjpo- graphical error, because Tsaidam lies in the ;;eot of Kuku-nor). In 1958 the author participated for three months in the work of the physical-chemical expedition of the Academy of Sciences of tho Chinu!ie Pcoplr,03 Republic with the ;,iim of invusti,,,uting the salt deposits in Tsaidan, on the strc.ngth of the %ereement concerning scientific cooperation. In this basin there are numerous large salt lakes, the concentrated brizirz of z-hich are L1. The fialt dfpo.9itn cont-tin Na"'] , ,.%irsibilite, rich in K, blj,~ B, I A (Ila 50 1011 0), aotrakhanite (Ila SO ilgso 1,11 0), 2 4* 2 2 4- 4- 2 (KCl.11gC1 2- 6H 20), borax (Ila2B407* 10H20), bornantroc~~Icite Card 1/3 (Na2 O.CaO-5B20 3* 16H2 0). (Abstracter's Note: ~:hould correctly Phyqical-chemical Inves*tigation of Natural Salts SOV/78-4-1o-40/40 of Tsaidam (Chinese People's Republic) be called boronatrocalcite) and other salts. In thg, basin and its neighborhood there are boron-containing sprin -.9 -x~ich are 0 partly hot. ~~uite recently petroleum, mineral coal, iron ore, sulfur and ores of non-ferrous metals and rare metals w;-,-re found in the adjacsnt mountains. Since a railway is planned to this area, favorable conditions are to be expected for the development of the chemical, metallurgical and petrolt.-Um in- dustry. The Institute of Chemistry of the Academy of Sciencr;s of the Chinese People's Republic has started in 1957 with the investigation of some salt lak.Lo of Tt~%idaza. The expedition in 1958 was headed by Professor UU Ta-kang.Chemistsq Geologists and technologists of the Inotitatt of of the Academy ersity, 0f the Institut 'in of Sciences of the Pekinj Univ 0 of k - .uroXiiftw Materials of the 1.1inistry of Geology, of the Shanghai Scic:ritific Research Institute of Chemical Industry and of the Adzinistration of 11alurLry of the Mini.9try of Conzamcrls Good Industry took part. The salt deposits belong to the first class of salt lakes according to the cla3nificat-ion of V. S. Kur- nakov, kcademician. Figures 1 and 2 show strange crystal for,-13 Card 2/3 of rock salt and gypsum. The mineral lf_ii.~Ln.-s wers, ~;ubmitted Ph,ys ica I a 1 Inv L-s t i~,_-t ion of *;,at ura I Sal tf, L, OV//7F,-,; - 1 ri-4o/4 o (Chinc-se Pf.,01,11!'s lif-public) to the Chair of Chc-,_istry of th, Lien-chou Jnivursity. The pre- --aration of borax and potas-.h ftrl-il i...r his already 7c-t ill at tht, big hikes. The nathur also %iunt-iunn tv",e. nu.-;~,roLIO iror, i;iultin,g, furracf!s and plants foi- pPtrr_,1eu,,:,. di5tillatiut, cstab- l; 1:0!~,d by the people. Thorn, -ire 2 fi,~urcs. AS~;,-CIIATIG:;: jn~:titat obshch(-,y i neurganicheskoy khi:.-iii i,-.. N. S. Karnakova Ak~idf,mii nauk of Gc..--ral and Che:-A- stry imeni N. S. Kar.,.ukov ol' thc- Ac;a(dQ1-;,j of Sciely-cei, U21SR) Card 3/3 .-IXPZSHKOV. 1.N.; SOLOVITIV, V.I.; HIM, G.H.; KOLOSOV, I.S.: IMIMSKATAt A.G. Calcium content of natuxal gahs of Krasnoyarsk Territory. 1tv. Sib. otd. AN SSSR no. 1006-46 l6o. (MIRA 13:12) 1. Institut obahchey i neorganicheekoy khImU iment N.S. Karnakova i Xhimiko-metallurgicheakiy institut Sibirskogo otdoloniya AN SSSR. (Krasnoyarsk Territory--Calcium salts) XMRIPIN, L.A.1 LXPXSEKOV, I.N. 16 - Pbysicochanical study of the system Y04 - C52SO4 - A'2(SO4)3 - H~O' at 500o Mur.neorg.kbimo 5 no.2:481-49) r 16o. (HIU 13:6) 1. Yaroolavskiy gosudaretvemW podagogicheskiy institut imeni I.Do Usbiaskogo. (Potassium sulfate) (Cesium sulfate) (Aluminum sulfate) 'IWAMN 0 I&NO On -the one hundredth anniversary of the birth of Nikolal Semenovich Immkovo Zhure zieorgt khim, 5 no.3.1-.2382-2394 N 160. (XIBA 13:11) (Kuxmkovs NlkDW Sememovich, 1860-1941) LIMHXDV, I,N.; MUSHOVA, N.N. Solubility in the syst a IA SO - Na 50 - Zhur. neorg. khim. 5 n:.Illj~j~_25172N 460. (Lithium sulfate) (Sodium (Ha~esium sulfate) MgSO - 9 0 at 750 C. 4 2 (KOU 13: 11) sulfate) S/030/61/000/003/011/013 B105/B215 AUTHORt Lepeshkov, I.N.0 Doctor of Chemical Sciences TITLEt Physicochemical analysis and its application PERIODICALt Vestnik Akademii nauk SSSRp no- 3P 1961p 115 - 117 TEXTx The 19th Kurnakov lecture was held in Moscow in December 1960, and the IV vaesoyuznoye soveshchaniye po fiziko-khimicheskomu analizu (Fourth All-'Union Conference on Physicochemical Analysis) took place from December 7t to lot 1960 in connection with the hundredth anniversary of the birthday of N.S. Kurnakov, Soviet chemist and metallurgist, who deve loped the physicochemical analysis. Over 1200 representatives of scienti: fie institutions and industrial enterprises of 67 towns of the Soviet Union participated In the conference. In the Kurnakov lecture, I.V. Tananayev analyzed the role played by phyeicochemical analysis in modern chemistry and technology. 142 reports on problems of physicochemical analyses of metals and semiconductorst salts and solutionsp silicates and inorganic polymers# organic systems and other substances, and on the application of Card 1/4 S/030J61/000/003/011/013 Physicochemical analysis and B105/B215 physicochemical analysis in analytical chemistry were given at the plenary and sectional meetings of the conference. Purthermoret the following re- ports are mentioneds G.B. Bokiy on the determination of the composition of imagirary Kurnakov compounds by the methods of crystallochemistry and physichochemical analysis; V.I. Mikheyevas on the correctness of the assumption regarding berthollides as chemical compounds in which a conti- nuous transition of several valence stages takes place; V.Ya. Anosov mentioned the agreement between special points of Mendeleyev and the sin- gular points of Kurnakovj V.K. Semenchenko presented some new problems of physicochemical analysis In connection with a more ample knowledge on phases and phase transitionsi by studying the equilibrium between phases in aqueous salt systems at high temperatures and pressures, M.I. Ravich obtained results of fundamental importance for the development of the the- ory of solubility# and the explanation of conditions for hydrothermal syn- theses of orystalst and the examination of geochemical processes in the earth's crust; V.I. Spitsyn and collaborators showed that preparations of radioactive elements have characteristic properties depending on radi- ation phenomena which occur In the interior of a solid substance and are reflected by the properties of its surface. 0.S. Ivanovt on phase dia- Card 2/4 9/03 61/000/003/011/013 Physicochemical analysis and os, B105YB215 grams and phase transformations of uraniumt plutonium, thorium, zirconium, beryllium# and other metals and their alloys, and their application in modern technologyj N,Po Luzhnaya, N.Kh. Abrikoeovp,V.G. Kuznetsovs on the production of new semiconducting substances on the basis of studies on complicated systems and the separation of phases with semiconducting pro- pertiesl N.V. Ageyev emphasized that a neutron diffraction study of the spin superstructure is required for an insight into the behavior of atoms and electrons in metals and alloys. I.I, Kornil-ov reported on groups of elements forming continuous and restricted solid solutions or metallic compounds with metals of the periodic system. A number of reports dealt with the physicochemical analysis of systems including rare metals, non- ferrous metals and actinides. Despite considerable success in this connec- tion, the insufficient rates and volumes of studies are emphasized, mainly in the fields of crystallochemistry, thermodynamics and the development of a modern theory on metal alloys. N.K. Voskresenskaya, and A.G. Bergman reported on systems of salts and oxides of various metals in molten s tate, and on salt - metal systems., S.I. Vollfkovicht on the application of physicochemical analysis in the production of mineral fertilizers; I.Ne Card 3/4 5/030/61/000/003/011/013 Physicochemical analysis and B1051B215 Lepeshkov on the development of WsS# Kurnakov's ideas on the investigation of salt equilibria and their application for the examination and utili- zation of natural salts of the eastern and southeastern rayon of the countryt Turkmenistan, Kirgiziyap Uzbekistan, Belorussiyaj and other salt-containing rayonsand the production of mineral fertilizers and rare elements used.in modern technology. The conference outlined the possibi- lities of further studies in the development of theoretical problems of physicochemical analysis and its application for the solution of problems in national economy and modern technology. The necessity for a coordi- nation of the work conducted in this field by various scientific insti- tutions of the Soviet Union is emphasized. Card 4/4 5/078/61/006/001/010/019 B017/BO54 kUTHORSo Loposhkov, I. N., Fradkina, Kh. B. TITLIj Study of Solubility at 5000 in the System Li, Na 1180 4' CO 3 - H20 PERIODICALs Zhurnal neorganich eskoy khimii, 1961, vol. 6, No. 1, pp. :199 - 207 TIM The authors studied t go solubility in the quaternary system Li, N&JISO 49 C03 - H20 at 50 C' and determined the crystallization ranges. Results are shown as Anooke diagrams in Figs.2 and 3. Fig.1 shows the distribution of crystallization ranges. The following ranges were found3 U2 CO 31 Is.2 C034H20, No2CO Y2N&2SO 40 Na2soVNo 2s0 4' U2 so 4P and Li 2so 4'H 20. The crystallization range of Li 2CO 3comprises the major part of the diagram. Table 3 gives the ratio of components of simultaneous crystallization Li 2C03 + No2 CO 3' 2Na2so 4* Fig-4 shows microphotographa of crystals from Li 2CO 3 + Na2 COY H2 0 (a), L12CO3+ Na 2s04 (b), Card 1/7 Study of Salu'bilitY at 500C in the System S/078/61/006/001/010/019 Lip N&JISO 41 003 - H20 B010054 Na2so 40 Li2so4(Y), and Li2so 4'H20 W. Fig-5 shown thernograns of Li2CO3 (a), Li 2s0 4'H20(b), Na2so4 + Li2so 4* Na 2so4(v), and Li 2CO3and Na 00 2N& so (gl. Fig.6 shown the distribution curves of components 2 3* 2 4 between liquid and solid phases in simultaneous crystallization of Li 2C03 and Is 200 3v 2's'2804# Hence it appears that limited solid solutions are formed in simultaneous crystallization of Li 2 CO3and Na2 CO 3* 2Na2so 4* The crystallographic investigations were made by M. N. Lyashenko. G. G.Urazov, Z. I. Lifetoya, P. S. Kindyakov, L. S. Itkina, and N. M. Chaplygina are mentioned. There are 6 figures, 3 tables, and 21 referencesi 12 Soviet, 3 US, I British, 1 Canadian, 1 French, 1 German, and 1 Italian. SUBMITTED: June 2, 1960 Card 2/7 L%jv3 0 S/078/'1/006/GO1/010/019 3017/BO54 % . /I Card 3/7 Nijus Card 4/7 S/078/61/006/001/010/019 B017/BO54 41f L;7j 7, J3 S/078/6 1/0006/001/o1 O/cl 9 BO 17/305 41 15,72 lily, 47 ulcoj ed NaZO4 LA*UA Card 5/7 S/078/61/006/001/010/019 3017/BO54 v fie".j d . Card 6/7 I z 4. S"4 =0 1400 'Coo ISVO Na C03 to io 40 19 1/# Sal Ili UJ,:a HO N.7 IOOA'a#,-! C.7.78~ S/07 61/006/001/010/019 B017YB054 Legend to Fig.Is Crystallization fields in the system Li, Nallso 40 CO 3 -H20 at 500C. Legend to Fig.2s Solubility in the system Li, Nallso 4# co 5 -H20 at 500C in the range of cryetallization of Na2co 3* H20, Na2CO 3' 2Na2SO 49 Na2SO 41 and L12c,~31 a) moles of H20 per 100 moles of salts. Legend to Fig-3t Solubility in the system Li, Nallso 41 CO 5 -H20 at 50 C in the range of orystallization of Na 280 4* N&250 4' L12SO 40 U2 so 4' H2 0, and M2 C03; a) moles of H20 per 100 moles of salts Card 7/7 "ARM 3/078/61/006/006/013/913 B110/B206 AUTHORi L!pe~~hkov, I,_ N.__ TITLE: Fourth All-Union Conference on physical-chemical analysis dedicated to the 100th birthday of S. S. Kurnakov PERIODICAL: Zhurnal neorganicheskoy khimii, v. 6, no. 6, 1961, 1490-1492 TEXTt In his lecture on the theory of metallic alloys, N. V. Ageyev pointed out the necessity of the determination of the spin superstructure by neutron-diffraction studies and the determination of the dependence of the properties of metals and alloys on the spin order, to obtain a complete characteristic of the behavior of atoms and electrons in atoms and alloys. I. I. Kornilov studied the mt~allochemical properties of the elements on the basis of the ratio of the atomic radii, the electronegativity, and the types of the crystal lattice of the elements, and in his report tried to divide the groups of elements into sections, which with the metals of the periodic system form continuous solid solutions, limited solid solutions, and metallic compounds. It was established that the majority of the Card 1/3 3/078/61/006/006/013/013 Fourth All-Union Conference... B110/B206 metals which form continuous solid solutions in binary systems are con- centrated in the group of transition elements with unfilled d-electron shell. Startink: from the proposed classification of the types of reactions of metals with other elements, different compositions of the metallic alloys with any given number of components can be anticipated. The lectures by N. P. Luzhnaya, N. Kh. Abrikosov, V. G. Kuzneteov, and others dealt with data of physical-chemical investigations of the phase diagrams of systems containing As, Te, In, Bi, S, etc., in order to prepare now phases with semiaonductor properties. The neoessity of investigating 'phase diagrams in very close concentration intervals due to the effoot of slight admixtures on the semiconductor properties was established. Apart from clarifying the effect of the phase composition on the semiconductor properties, the degree of dispersion of the phases, their behavior in thin layerst the transitions from amorphous and glass-like states into crystalline ones, etc. must be considered. The lectures by 0. S. Ivanov, Ye. M. Savitskiy, v. F. Terekhova, Ye. 1. Gladyshevskiy, N. N. Zhuravlev and others dealt with physical-chemical analysis of metal systems with actinide part. A remarkable success was achieved in the investigation of Card 2/3 Lis S/076/61/006/006/013/013 Fourth All-Union Conference... B110/B206 phase diagrams of alloys on the basis of plutonium , germanium, uranium, rhenium, cerium,lanthanum, niobium, vanadium, etc., and in the production of alloys with properties of special interest for the new technology. [Abstracter's notet Complete translation.] Card 3/3 ~7 ./ s/u oi/ 6 o /0, A A U,; 1: d L T T IT ME- o u b i I i t y ziys t em L ~'C, i.,. S 0 H20 at 50 anJ 1%~u C P--.RIODICAL: Zhurnal n9orvan14_,ht!:3^cy Khi-mii, v. o.. ric b 16111 1 7 CJ I T_:X, - The i,,-, t1je fOU1'-1*Un",.,1.i_,r.t i,_ 1 "t r~ SU, B-,O at 5',-, and 1UCo^U and tLe cryota. liz~it; . n zoni;.; c1' t hc- L;. S P11c, . Li,50 Na 50 Da SU 5 K SO Va Sov K~"__,U, i'l "So il.;, "'11 j Z, 2 49 2 41 2 4' 2 r I , z A , I 2 L1,_,SO Na SO K 50 salts were -tuded. The follox;rv, c r 7 1 a t i u n t- 4' 2 4 2 4 zones occur in the three-~omporlon:_ :~ys,em 1-, 0 , H COO,C: Li 1H 0, Li z;0 4 ., Tf i WJ 1 - I e S 11 t S 1 .3 0 11 J 4' 2 4' solution with lithium Sul f a The c4ol..d ;-:i to z, t, 100 C 13 .,ery Card 1/5 0 6olubility %tudy in tLe ,ystem. limi ted. Ti--ree er.,iot ).-~rmi c ef fe!- t.;; upr,,~ Le c-' -.h,? J- 0 L i S) 0 K so ~1,ilu. 417fect at 44U C C,01,f:71C-Cpt"~UF 4 ' ~) 4 of this salt Irorr, ttif.-LY- into tLe 0,- a I S C indicates a roi.ymorri,ous tr,An3furrdtion, rielt:rg F.~-Jn, of ttiin In tr.i? 4 H,C), also a Jou~ le sal t apt ea o r::, i, Oz .3 o. u o r. s 1~ r o t a s s um nu k- . C r.,-:, t ci I I z a t I o z 1 d 1 u r 0 5 0 C i n t t. e s.v r, t ipm Li 2 Ila 2 60 4 K i,-j Al H Fi Li tS 4 Li Li SO 6". .... S~) 6j 3C , (i ::j K SC) 1 4 C 4 z T',: -- r. r:f.9 a i i z % t, i ,, ri ;.One of the ~' Li 6 "j' i3 u* C i.., C twice its ot 11 f U r ti End o t h,~ r.;,,; c t f ~c t i p pea r C-11 trie t;P I [It' Of t t, 1 S salt at ard i0o' e f f (,~ C: d e hy 1 r a t i o r . Tl;e crynt;11.9 of *I.e SO .,.;a ~O K,~- 2 j 2 C;, rd 2/5 B/078/61/,-06/007/011/.014 Solub4lity study in the system ... B121/B207 a rhombic lattice and -the following refractive indiceat 119 - 1.486; !,.-n - I - A 60; Np. -z 1.477. The crystallization zone of the Li 2so 4-K-2504 salt incree.qes with tonnper4i 'lure irvl.~ease that oil the Li SO Na SO salt also 2 4 * 2 4 increases i~t'a tempt-rature r 15 E! Cf hXM 5 0 to 1 OOPC. A t * 2 50C, this salt dpes not exist, but a double salt of the following composition: Li2 s04,' 31-a2so 4' 12H20. 0 0 The crystallization zone of 61aserite in smaller at 100 C than at 50 0, the crystallization zone.of potassium sulfate also decreases at a temuerature rise. Figs. 3 and 4 show the isothermal lines 0of solubility of the system Li 25o 4 -Na2so 4 -K2so 4 -H20 at 50 and at'100 C. The crystal o ptical analysis were carried out by M. N. Lyashenko and N. N. Romashova. Therevare 5 figures, 3 tables, and 12 reference9i 9 Soviet-bloc and 3 non-Soviet%-bloa The references to English language publications read as follows: L. t. Rogers, E. R. Caley, Ind. Eng. Chem., 1.~, 209 (1943) A. N. Campbell, E. M. Yartzmark, Canad. j. Chem., ~6, 171 (1958) su~~.=,T:-~D: "Une 15, 1060 Card 3/5 LUESPYOV, I.N.; ROMASHOVA, N.N. Solubility in the system LICI - NaCl - MgC1 2 -H20 at 25 arIA-75". Zhur.neorg.khim. 6 no.8:1967-1971 Ar 161. (MIA 14:8) (Lithium chloride) (Sodium chloride) (Magnesium chloride) -LEFESHKOVP I.N., doktor khim.nauk Phyficochomical amlyala and ito application. Vest.AN SSSR 31 no.3:3-15-117 Mr 161. (MIRA 14:3) (Chomistryi, Analytical) ILPESHKOV, I.N. Outstanding chemist and :7esearcher of mineral resources of our ccnmtry; on the 100th am-liversary of U.S. Kurnakov's birth. Zap.Vses.m:Ln.ob-va 89 no,6:691--698 161. (MIRA 15:5) (Kurnakcrv, N:Lkolai Semenovich, 180-1941) LEPESHKOV, I.N.1 ROMASHOVA, N.N. Solubility and solid phases in the system LiCl - NaCl - Y9C12 - HZp at 25 and 750, Izv,AN Kir.SSR.Ser.est.1 tekh.nauk 4 no.903-40 162. (MM 16W (Chlorides) (salts) (Solubility) KURNAXOV, Nikolay Samenovich(decoaped]; zwkGoTsEv, o.re., doktor khin. nauk, otv. red. 1 b=j%QYO-1J. , doktor khin. nauko otv. red.; VASILITEVA, Te.A.9 red.; LAUT, V.G., tekhn. red. [Selected works] Izbrannys trudy. Moskva, Izd-vo AN SSSR, Vol.3. 1963. 567 p. (MIRA 16,10) (Chemistry, P)Vsical and theoretical) UPESHKOV, I.N.,; FRADKINA, Kh.B. Study of malt equilibria in the system Lij Na # ~04, C03 - H 0 at Wirco Zhta;.aeorg.khim. 8 no.2t447-456 F 163. (MA 16 15) 1. InstItut obahchey i neorganicheakoy khiaii imeni N.S.Kurnakova AN SSM. (dialts) (Phase rule and equilibrium) LEPF,SIIKCV., I.N.; BODALVA, N.V.; KOTWA, L.T. Solubility in the system (2LiCl +- K,;,.B4 GZ,;f'2F,01 4- L12B40'7) + H20 at 25* . Zhur. neorg. khin,. 8 no.11:2597-2602 N 163. (MIRA 17:1) 1. Institut obstichey i neorganicheskoy khimii imeni N.S. Kurnakava AN SSSR. 9*1 MAKIN, A.V.; LE,PESHKOVP I.N. Salt equilibria in the system NaNO 3 - Ila2so 4 -Ila 2HP09 -a H20.at 250. Zhur. neorg. khim. 9 no.2:495-498 F164. (Mli(A 17:2) 1. Yaroslavskly gosudarstvennyy pedagogicheskiy Institut imeni K.D. Ushinskogo. LEPESHKOV, I.N., doktor khim. nauk . Gifts of the sea; natural saltz as a valuable raw material for mineral fertilizers. Priroda 53 no.2:65-69 164. (MIRA:17:2) 1. Institut obahchey i neorganicheakoy khimii im. N.S. Kurnakova AN SSSR (Moskva). IEPESHKOVI I.N.; BORISOV, V.M.; SHAITIMINIKOVA, A.N.; Separation of natural polytalits salt in prom. no.6:437-439 Je '64. (,4-IRA IP,:7) FAIM,A, I-';' ~Szla potasuium 3alt FOte-,tlal of dri'.-'-:rg =ids Of :- Zhur, neorg. khim. 10 no.3:684-686 !-L- 165. Olilp.'~ 18:7) TURNETSKAYAt A.F.1 LUM14.- 11K. --- Solubility in %be system KC1 KCW H20 at 25 and 50110, Zbur. neorg. khim. 10 no.9s2163-216*6 S 14-0 (Min 18: 10) 136h0 ACC NRt AP600(Y765 OURGE CODF: UR/00711/1,r,/Olf~/()]-'/.~845/?847 AUTHOM Plyushchavi V.' Ye.; 1,nrjeqhkavp 1. No ORG: none TITIE: Second aU-~nion conference on the rare alkali metals -.1 1 S(XJRCE*. Zhurnal neorganicheakoy khimii, V, 1.0, no..12, 1965, 2845-2847 TOPIC TAGS: metalluigic conference, chemical conference, alkali metal, cesium, lithium, rubidium, metnl compoun(l, w4al -xtr-ricH nn, rn-l,al puri f i r,:0 ion, ion exchange, inorganic synthesis, ch-mif~sl, polyh-didfi milt-, phane dirigrran, solubility, aqueous PoluLian .ABSTRACT: The Second AU-Union on 10re Alkali K-taln was held 13-16 October 1964 in Novosibirsk jud was johitly slionsfired by the Siberian Department and DcJ-3;-tr-tm of F'hysical (7hernistry and Technology of Inorganic Mateviah, of the AS USSR, the Ussit State Committee on Coordination of Scientific Hosearch, And Lite Novosibirsk ' see'tion of the All-Union Chemical Society Im. D. 1. Mendele-ve ! More than 50 scientiff-cPapers wern h-dealt with general subjects of the synthesiS and properties of the rare alkali metal compounds, methods of determination, extraction, separation, and purification of the rAre alkali metals, chemical Card 1A L 13640-66 I ACC NR, AP600 interactiono in aqueous solutions and melts of their compounds, and applications of these metals and their compounds. There was a significant nwnber of papers on the ,synthesis and properties of the compound4t The following topics were noted in this category: new data on zirconates)-drid hdnate of alkali metals- (plyushchev, _V, -Ye, , and A, A, Grizik); fluorozirt4nates and flu- orohafn~ies Of'R*b and Ci' L V-, and 4 S. Guzeyeva); reactions of hYTr_O_XIfhes-and carbonates of the rare alkali metals with hydrogen peroxide (Dobrynina, '.V. A., B. S. Dzyatkevich, N. A. Akhapkina, and A, 1. Chernypheval- cesium superoxide nd ozonide (Vollnov, I. I., and V. V. Matveyev ; thermal stability dRb and Cs compounds (Breusov. 0. N. I. Kashina,, G. V, Revzin. N. A. Druz'. A. 0. Lesovaya, P. D. Komissarova, and R. M. Shkj2yEka Za); lithium ln-oh-y-d-r-i76-and-g-a'n-gH-y-d-ride jbipov, S. W4, and V. 1. Mikh~yeva); lithium,-'And boron lb~mplexes (Arkhipov, . , Gt_ Ye _ - -Revzin, and P. D. Komissarova); ton-ex Oange properties of ferro- cyanides and application in the extractioxi of the.rare al~~ metals _(Kozlov a,. ail -exchangelVo f j-A. S d Yunden Mizhidtvn).- ton perty o granulated n- ielln - Ic ali metal ferrocyanides (V S. A. Kolesova, and A. F, KalashnUnYab amalgarn, ethod of pre- paring Rb and Ce hydroxides (SAjyzrjmko_,_ff_r. A,~W. Smirnov) and LI reduction on the I!jijid ~R s ~ev and 1. V. -gallium cathode (Ponomarev, V.P. ir-'A 211. 74 ~1_ 7 1 L ~3640-" ACC-N- f. Y,i;~W, V. E. Pormbavey, and A. I. Zazubin)-. Three papers were ri-ten M Rb and Cs determination by different methods. Mine papers dealt with extraction of the rare alkali metals from raw materials, six of them with Li , ono with fib, and two with unspecified alkali rrwtal5. The following paporo were tilite,l in f-he serieJ, on separation and purification: s,-tvirntion of t1w rare alk-0 i by continuous counter-current ion-exchangr (Gornhkov, V, Cr. Ni. Parirlirnhov, iG. M. Gulynyeva, S. N. Dniitriy(, , N, N. Savviikova nml (;. X1, Tveam separation of Li front evi-tairi alka )k it-tit M ali e: metals by ion-exchange (Suvorovskaya, N._ A V. V. and 1. A. Sbmarinova); purification tif Rh and Cs coti?potlrlds by crystallization (Vulikh, A. 1. , A. 0. I'vsovayaf V. A. Ka7-Iniinskaya P. Zherdiyen D, b7'm. A i1i"p-OV, and 11. Al. Sliklovskaya); and preparation okhigh-purity CS and.its conipounds (Gulyayeva, G. Al.). The papers on 9e1T_s__a!naqueous solution_-- or salts of the r,-im, alkali metals attracted special attention. G. V. Sanisonov reported on the nature of the chemical bond and phase structure of the rIL'C alkali metal compounds with non-metallic elements and Indicated di- rections to follow in the synthesis of these compounds with given pPp- erties. Two papers were noted on the phase diagram of fused salt'sys- tems MeC13-RbC1 and MeCl3-CSC], where Me = Ga or In (Arbekov. Sryvtsev, and Ye. S. Petrov), and MeCl-Sc,03, where V. N. , V Card ACC NRs AP6000765 Me = Li, Rb, or Cs (Fedorov, No YA., and Ye. So Petrov)o The.aqueous, salt systems were treated in sevefaT-Fapers, one whicfi was on so ility at 25C in the Cs compounds K compound-H~O system (Kirgintsev, A. U., and L. No Truohnikova). Three papers dealt with polyhalide systems as a meuis of purification of Rb salts (Kuznetsova, V. I.-Safonava, and Do a. gteRilq Fakeyev, A. A., 10 No Kulyukin, and B. Do t-ISI-tepin or Rb and Cs salts (Stepin, B. D.p__A_.V. Babkov, and To M. Sas). Two of several papers were noted in the category of applications; vitreous lithium silicates (Dubrovoj So A-i and the effoct of Rb and Ca oxides on the properties of vitreous and crystallized silicates (A;--.ekseyeva, Z. D.). The Third All-Union Conference will be held in 1968. [ATD PHoss 4169-F I SUB CODE: 110 07 / SUBM DATE: none -L 1685o-66 EWT(m) RH 7XV Mt AP6=818 AUTAORs Lepeahkov, I* ORG,. none Tr=t Ninth Mendeleyev Conference SOURCE CODEs UR/0078/66/on/001/0228/0230 SOURCE: Muirnal neorganicheskoy khimii, vo 11, no* 1, 1966, 228-230 0 TOPIC TAGSj chemical conference. food tecluW1019y', agriculture science. chardstry, fertilizer, organic synthetic process 1 ABSTRACT: The 11inth Mendeleyev Conference on General and Applied -Chem- istrZ was held in Kiev, 24-21 Ma 1965 More than 2200 delegates from Soviet organizations participated in the conference, including 200 academicians and 400 doctors of sciences and professors. Repre- sentatives from other Communist countries were also present. The conference was opened by Academician N. M. Zhavoronkov and P. Ye, Shelest, First Secretary of the Central Committee of the Ukrainian Communist Party. ,.Card UDC: 54406s3 L 1685P,-66 ACC NR: 'AP6002818 Further development of the chemical industr)and agricultural 'chemistry was the main topic of the conference, with production of mineral fertilizers. leading the list of topics. It was indicated that the percentage of useful components inmineral fertilizers will increase from' the present 25. 4% to 36% by 1970. In his discussion of synthetic food products, Zhavoronkov indicated the need for methods leading to the di- rect synthesis of edible compounds from W2, air, and water. Acade- micianA., sme ~anov also spoke on the production of synthetic food. 'Several papers were devoted to the chemistry and technology of ferti-. lizers, agricultural chemistry, economics and planning for_the expansion of agricultural chemistry, etc. Resolutions of the conference outlined the ma3m tasks for progress in chemistry, chemical technology, and large-sco2e expansion of agri ult al chOmistrye It was decided to hold the Tenth Mandeleyov Conference in 19670 FA4 PRESSt 4186-6 SUB CODEt 07, 02, 06 SUEM DATEs none rd 2/2 -)Ilii _V,,_OOqan IXanoqph- MEDVEDEV, Fedor Konstantinovich; IF,f~ESf[Y IQ k_ LUSHCHEVSKIY) V., red.; AKIS, I., tekhn. red. (From the bottom of the sea]So dna moria. Riga, Latviiskoe gos. Izd-vo, 1962. 196 p. (MIRA 16:1) (Baltic Sea-World War, 1939-1945-Naval operations-Submarine) PLYUSHCHWs V*Yei; STEPINA, S.B.; LEPESHKOVAl L.I, loo(tri)polyhalides very similar in properties to alkaline metalej, and their use in the removal of cesium from rubidium campoundso Dokle AN SSSR 3.48 no-3t6OI-W4 J& 1630 (MM 102) 1. Hookovokiy institut tonkoy khimicheskoy tekbnologii im. M.T. lamonosova, Predatavleno akademikm I.Va, TananayevZm. (Halides) (Mbidium: compounds) (Cesium] S/020/62/143/006/019/024 B106/B138 AUTHORSj Plyushchev, V. Ye., Stepina, S. B., Stepin, B. D., and Lepeahkova_,_L. I. TITLE. Heterotripolyhalidea OP allcali elements with similar proper- ties and their importance for the production of pure rubidium and cesium compounds ?BRIO DICALs Akademiya nauk SSSR. Doklady, v. 143, no. 6, 1962, 1364-1367 TEXT: The possibility of producing pure Rb and Cs compounds via complex heterotripolyhalides is thoroughly discussed with the a'~,,' of 27 refer- ences. A method developed by the authors (V. Ye. Plyushchev, B. D. Stepin, Author's certificate U55R no. 1326-27 (196o); B. D. Stepin, V. Ye. Plyu- shchev, Author's certificate USSR no. 140051 (1961)) provides for the production of Rb preparations containing inly O..0002~ potassium, from industrial RbCl containing 2 K. Rb preparations of such high purity had not been obtained by methods described before. In the present simple and economic procedure, RbCl is twice (first in aqueous solution, then in 0-5 M acetic acid) converted at 90'7C into the complex Rb LI(ClBr)j-H20' Card 1/3 S/02 62/14 3/006/01 c,/024 Heterotripolyhalides of alkali... Blo6%13a which is then decomposed by heat:~'ng to 4000C. A further method developed by the authors for producing pure cesium bromide by precipitating the complex ceuium di-iodo bromide, CaBrI., from aqueous-alcoholic solution (S. B. Stepina, B. D. Stepin, L. I. Lepeshkova, V. Ye. Plyushchev, Author's certificate USSR no. 15E927 (1961)) is discussed in detail. Two applications of thin process proauce cesium bromide of 99.95~4 purity con- taining 0.02~~ Rb and I Uev. For measuring the background the specimens were replaced by carbon discs.. The neutron energy opeotra were determined for N 900 + N2700 ani 14 30 :~ + N1500 and were found to be of equal shape and similar in position.. Numerical calculations were made outhe basis of the evaporation modeli both~ for Bi and Au the theoretical curves show qualitative agreement but they are somewhat steeper and their tail is shorter by 2-3 Mev. The character- istics of the neutron levels excited in Bi and Au are given as well as in- dicating the possible transitions a.ad thair relative intensities. Part of the data is taken from Rose et a!. (Phys. Rev., 102# 1613P 1956), There are 5 figures and 3 tables# ASSOCIATIM Fizioheskiy* institut in. P. N. Lebedeva AN SSSR (Physics Institute imeni P. M. Lebedev AS USSR) Card 2/2 VA-,11-TIUA, G.'! ic(Iltilily V.V.t "Angular and Energy Distribution of Photoncutrons," Lebedev Physic3 Ins t . Acad . 1,1-,~ttf %, Un-*,-,-,-,,:;I ty a' - !In"! L,.v hysics, III)Scov, 1~,-27 INOv 57. L 1362L-1�1 Wr~w)/Ms wrelm Mt APJ60 8/0056/6VO"/006/1787/1799,15ff AUMOR., zatsepinal 0. N. j Igonin, It. V.; Zazareva, Le Yes Lepeatk1n, A. 1. 53 TITLE: Angular and ezergy dietribir.Aons of photoneutrons from bis=xtb,, sold,. and Untalum SWRCE: Zhurnal eksper. 1, teor. fiziki,, v. 44, no, 61 1963P 1787-1799 TOPIC TAGS: photoneutrons angular distributions enera.dintribution, biwmth) ~gold, tantalum,, giant resonance region ,ABSMCTs The angular and eneror distributions of photone~trons frcm bismuth, :gold, mid tantalum irradiated by X-rays of peak energy 14 end 19 VeV were ,measured in order to study the interaction between Gamma quanta, and heavy nuclei -in tta region above the giant resonance. The work was done with the synchrotron .(30 YAV) of the Pbysice Inatituteo Acadevq of Sciences SSSR, The photoneutron spectra vere registered by their recoil protons, using nuclear emulsions, which were. scanned under microscopes. Summar7 spectra were obtained for the neutrons emitted at right angles (90 and 270") to the x--my beam, and also for the anacs .30 and 1500, Their experimental results were compared with calculation rmde by ..the.avsporation model and by the independent-particle model. The neutron energy Card , 1/2 L 13621-63 AC=SIO,Y I%:, AP3DO3099 regions in wMch the various calculated and experimental d1stributions agree and disagree are discussed in light of the possible shone and possible transi- tions to vhich they can be due. "The vork vas done at the PbWeics Institute., .Academy of Sciences SSSR.. in collaboration vith the staff members of the S.aratovckiy gosudArs;tvenzW*y universitat Im. IT. B. ChernIshev&iy (S=toy State tlniversl:!~:.) X. Y&. Avdokushim, L. V. Barenova, and 4. P~ Bo helped vil th ';;~Ion~sp for Mch the a-u-thors eVress their deep grati- ,tthe scwning of the .tude.- Origi art. has., 2 foroLlmo 9 figures and 3 tables, ASSOCIATION % Flzicbeakiy institut ime P. N. Lobedeva Akad-li nauk SSSR (Physics :1natitutej AcadezW of Sciences S=)- %Mmrr=: Owsn( 53 D= ACQ: 23Jul63 ENCL: 00 SM CODE 1 00 NO MW SOVS. 003 anw: 023 Cord, 2/2 0.1 ixT.,;AKIIIv V.Ya. (1"U,',, Chov) aola-LiomAiiij imt-vaen 'At. v slL%-oIo no. 6:41-45 Y-L 160. (;Ji-:. ll,:2) (I;athcmatics--%~'ttdy and teaching) (PhyL;i,-u---StLdy and teachirj) 't 30) Uj* 'We F for Vol ms Li5t, Of -an Acce,991--- -as 1f, ,3co-luer ::o 14, F'C, V. .1,Friculture-I'lant a:-,(i Ani--iali inc!u~txy. S~iark f.*:3hing. p- 71. Vol 4, No 5, 1952. ,last i~urot)--3an Accessluns List. L'Ijr:~rv of Vol 2, 'Ilo 3, X.,arch LIPETIC, V. *Findings Of Fish Species Unkowm In The Adriatic.* P.1 (BIWES". Vol. 40, NO. 3, Nov. 2, 19W, Split) SO: Monthly List of East Buropean Accessions, Vol. 3, go. 3. Librari cf C,~agrevv, March 1954, Unole ZOYA,X.F,.- 4M Dysing natural silk witb acid-mordant dyes. Izv.Tys.ucheb.zav,; tekh.tekst.prom. no.4:1133-170 158. (WRA 11:11) 1. Leningradskiy tekstIIIny7 Institut imeni Kirova. (Dyes and dyeing--Silk) (Mordants) AVIRBUKH, Sh.Kh.; LEFEMUl M.K. Dyeing of natural oil): Yith acU-mordant dyes by the zethod, of subsequent chromir%. Izv. vys. ucheb. zav.: takh. tekst. prom. no.3:126-134 159. (MIRA 12:11) 1.Leningradgkiy taketillay Institut Ims S,M, Kirava. 07eiv and dyaing--Bilk) ALTIRBM, Sh.Kb.; LIIPITKOVA, X.I. Dleing natural silk with acid mordants with the single bath method. Report 16-3. Izv.vys.ucheb.zav.; toich.tekst. prom. no.1:121-128 160. (MMA 13:6) 1. LeniWadskiy tekjjtillnyy institut im. S.K.Kirova. (Dyes and dyeing-Silk) IZBEDEVA, L.V.1, inzh.j ILMOV. V.Aq, k#nd.tekhn.nauk Reinforced rubber diaphragm with eM tips and a rigid center. Vest.maBh. 42 no.1+04-55 Ap 162* WIRA 1514) (Diaphragms (Mechanical devices)) 9 .6 t . I . . It 41 W Is WIt W W W U h 16 If 4 P 4 I I AT -bbOt goodfl. A 1'. Awwoull,,mi 4n,j ku_ JL IWJI In the potim 01 thin fuk)IP,-f 9mols Ow lovAttem which I% tfl vprd into r g mwr %An i- first "mtrrf with vu"nilinj nr yuk-4niAINA" prtamlling InImanort ~ 00 J4. =00 0=0 ** I ZOO 3** 400 ~ t" w Ill 1) 3 1 r i00 In It 4 00 00 If0 0 If 0 0 o 0 * 0 6 0 0 0 0 0 0 0 0 0 0 0 lp b 10918, 0 * 0 0 9 0 0 9 0 0 0 0 0, 0 0 0 0 * 0 0 0 4 0 0 0 0 0 * 0 0-0 4 6 0 IF lop 0 0 03 1s 1 4 It 0 a It Q Ij w it 16 111* "&)1* njob Alk"Am oil VU m a it v is a v 41 a co Aa a A I -L-1 a 0 p 0 A I I v y AA 1111 Cc Is taI f 1 4A 6 00 4 ).It A.1, W. tot t0$ 0 0 00 00 Rabbet boa t. V. JAIKJUV. j -00 o0 . S. S. It 1 4, VCV~o. 1-he P.A, litit, At. mid. ,I 00 malWor 1-m~q slitil Arhf wit itinkli- rishlm-f oulm. I lit -00 in-uli- surf44v .4 The 401 Awl thir wit~kk virl~v ,I If- -0 % 0 lul* are q-,Vrfrd with lurtornintir plot lxh-cr um.-iling Ilir 00 a lul-w into tJ- shell. After the tube j. in-eted the bok is !, f v"111calkisird and the rublwr is -wirlded" lo the nittal. Go A. Pestoff :0 r 0 --oo 0: o 00 00 -zoo zoo 00 f 00 1 40 :j3 i 00 zo 0 00 j I L j1AL&UVGKAL L-1101-ft'll CL.1110K.TIC- S, too r 4 -1 77, a i It ow 100 to a of 9 a of a m it If 1 14 to o o 0 'a 0 0 0 0 0 * 0 0 0 0 0 .9 0 0 0 0 0 0 0 0 0 0 to 1 0 z0:0000000000,111110000000 --- 6~0600060009400906 0~~00 ; 7 ff ;~O 0 le, 0 0 0 0000 0 4 0 0 A 001 o 0 0 oqoeosootilooq 33 W Is If IF 10 It I ~ - 11 Is Jo 31 a a V As ", s If mida"VIS" of u a W b t 0 10 AL aJ1111 I 2 10 Q W K4jL-,l 6. - l A 00 , . - T Ai -00 Smp" pra"S"S doftg "IKOA* and dry* of so, c~UW*so Gbm V, G *Aal-vhntk-w atul V. A. 1AVetamr. ,r Mew. larju Ckem. Tetk. So, 3. NJ~ 113 1 m Ru4sibs 114, 17. in Pngli%h 117 cf. C. A. 31. KIENO. Avqlrwtl natural mm;~ narrmixed coquwa and wtArW telluiew, filort wrtr teftt4ettly %aid. with wairf vapur, 1 "' ) 4 l W it: 4, . - . am After tim,piv Ir &IFF, thry had )JAP, ;P ; wairt "Inripmrcl with an mignial nionfurr clinical 4A O.K. 00 8; ).',x and N' for%. rr,4,. [be little, ortlnurd for "Futpliric 0 0'r 1.aln wA. 11-7.5. 1M.7, and 'vii.ol fit. . #-p I ii. .,I twin tafra-,re 114km a rwrialmliar flirvr. I it. Ints-ilifir .4 a4lu'ri-lorm 1, 1hir %alln, lot IlIffIrflf4d and fifilli. lal tyl., I Os, Kam"h see 00, 00, Ofs W91 11 l x*o 001 "Oe '00 00 so a 1 got 0 ~ If Of , if It a 1 AA 1 1, a Od 0 a a I ill rm S do 4 11v dnq 40 00 0 000 0 It 11 0 0 00 0 0 0 0 0 0 10 0 'a 'a 0 0 0 00 00 0 f1p 0 49 0 is 00 00 0*0 4 00006 a 0 & 4111 0 0 0 of 00 & 4111 4, s 0 010 0 0 a 0 0 a 0000 0 & 0! UNTO, V.A.; OKOHONESHNIKOVA, S.M.. redaktor. [production -of rubber technological articles] Proizvodetvo resinovykh tekhnicheskikh lzdelii. Moskva, Goo. nauchno-tekhn. izd-vo khim. lit-ry. 1946. 173 (i.6. 373) P. (MLRA 7:5) (Rubber Industry) USSR/Physics - Compression 1 Nov 53 "Static Compression of Ping-Shaped Flat Rubber Washers," G. M. Bartprr-v, 11 A L,~petov and V. 1. Novikov DAN SSSR, Vol 93, No 1, PI, 15 18, .Discuss relaxation ciirves (kg/cm2vs hours) of washers made of 3 tnes of SKS-110 rubber. Refer to the related work of 7 A. jV, Trudy MITKhT Im Lomonosova (Works of th- Mos,.'.nw Tri;at of Fine Chemical Technology im Lonnv.,.)5,)v),VoI 1; (19,13) Presented by Acad P. A. Rebind,~r 4 St~p 53 275T87 17P' Vidy- AfOAw. too- r4oW XFZ7 Okm Ak.; tOK $0, 1425f.'11,Ix UW64 (lk~*d an GOV 43541 and #w*Y'n a p"Wuhm A'P'W" .2 stud) pVV ". sbklqmt bulkstion of Cho pol"k of Omaha fonrAttan., re"I pnuirlscantahing am".Idw" polywi&dieuk. and wit i= bvntthkx*t d1rulphide and magw4ioni eitibi-buL A: wtth 60 9 7 %IUjCdUjFjd (MM 0 t42 (at pdCoewsp at atultid rabound. mwm Ewudmm. Jon" hacdpmft~ [MoKet stmVk-"d $t&MM thmnal smbili()r. o~Tho gvbouwt Curm *110AV 0. alAT dip to a Ininiln"an. U01 k a rjd6t,"U. the luillflnum witatfig aw Point of etsm-ata formt1m, whilo Ow Curl(w of 4h.6 atlwt &w%&AnCm diow anly Ilight tnvalu4 It say, at this pd".. -A temla4tro r9th curve 9f ww4ther totntound dKrwtt a pemkk, OK-TI 4 mialmus, 004 tholl a sfu%rp fiso tovellknx 001 this wo givw no eumf wication pt 060flito fom4aibo, (or it is pattty 6dlt&wC4f by att*r t%*Cfiwt4. In "413punmix without OcakfAtIL(Cal (110 mb"WA ~Urvft IN, rma"Ar Wom (Impiling to (ho mi"itnt MD. AVRASIH, Ta.D., kandidat tokhnichaskikh nauk; BNEG, P.P., professor, doktor tokhnicheskllch nauk, BXRNSHTRYN, R.I., kandidat takhnichookikh nauk; GICNIHOZOV, ?,A., starshiy nauchnry notrudnik; GLIM, B.M., inthenerl DAVIDOVSKATA, Te.A., kandidat tekhnichaskikh nauk: TILCHIN, P.M., inshener; TARAMIN, N.I., icaadidat fiziko-matematichaskikh nauk; IVANOY, D.P., kandidat tekhnicheskikh naulq "TOROZ, L.I., Inzhener; KOBRIM, X.M., knndidat teklmiiheskikh nauk; KORITSKIY. V.G., dotsent; IMOTIOV. D.V., Inzhener; KUDRTAVTSIV, I.V.. professor. doktor takhni- chaskikh nauk; KULIKOY, I.V., kandidat tekhnicheskikh nauk-,.IAMtlY-- V.A., kandidat tekhaichaskikh nauk; LIKINA. A.Y.. inzhener; HATVIUV, A.S., kandidat tekhnicheskikh nauk; MILIMAN, B.S.. kandidat tekhniche- AM nauk; PAYLUSHKIN, N.M., kandidat takhnichookikh nauk; PTITSYN. V.I., Inzhener [deceased]; RAKOVSKIY, V.S.. kandidat tekhnicheskikh nauk, RAXHSHTADT, A.G., Itandidat tokhnicheakikh nauk; RYABCMKOV. A.Y.. professor. doktor khimichaskikh nauk; SIGOIATEV, S.Ta.. icandi- dat tekhnicheskikh nauk; SHIRYAGIN, A.P., kandidat tekhnicheekikh nauk, SULIKIN, A.G.. inzhener; TUTOV, I.Te., kandidat tekhnicheekikh nauk, XERUSHCHOY, M.H., professor, doktor tekhnicheskikh nauk. TSTPLU, 1.-0., kandidat tekhnicheskikh nauk; SHAROV, M.Ya.. inzhener-, SHXRHAN. Ta.I., doteent; SIMLEV, B.A.. kandidat takhnichookikh nauk; TUGANOVA, B.A., kandidat fiziko-matematichaskikh nauk; SATELI, X.A., doktor tekhnichookikh nauk. redaktor; SOKOLOVA, T.F., tekhnicheskiy redaktor [Hachine builder's reference book) Spravochnik mashinostrottalia; v shesti. tomakh. izd-vo ma3hinostroit. lit-ry. Vol.6. (Glav. red.toma X.A.Satell. Izd. 2-oe, ispr. i dop.) 1956. 500 p. (KLRA 9:8) (Hachinary-Construction) 124-1957-10-12184 Translation from: Referativnyy zhurnal, Mekhanika, 1957, Nr 10. p 136 (USSR) AUTHOR: Lepetov, V. A. TITLE: To the Calculation Involved in Design Projects on Technical Rubber Products. Memorandum V. Particular Applications of General Equation for the Design of Pressure Sleeves (K raschetu proyekt- nykh konstruktsiy rezinovykh tekhnicheskikh izdeliy. Soobshchenie V. Chastnyye prilozheniya obshchego uravneniya rascheta napornykh rukavov. PERIODICAL: Tr. Mosk. in-ta tonkoy khim. tekhnol., 1956, Nr 6, pp 141-158 ABSTRACT: The strength of rubber--cord pressure- retaining sleeves sub- jected to internal pressure is examined; the construction of the casing is assumed to be performed by braiding or seaming the fabrics under a 450 angle; the results of numerous experiments on tests of the strength of the sleeves are presented. An approxi- mate calculation is described for hollow annular packings, consist- ing of a closed tubular collar and used for hermetic seals wherever a rigid packing cannot be used; the determination of stresses is conducted according to the usual formulas of momentless theory Card 1/1 for a toroid container. V. 1. Fcodos' yev UWZTOV, V.A. Behavior of industrial rubber materials under conditions of shear and torsion. Kauch. I rez. 16 no.6:18-22 Je '57. (MIRA 10:10) l.Mookovskiy institut tonkoy khimicheakoy takhnologii im. MqV. Lomonosova. (Rubber--Testing) (Strains and stresses) JP I J1 it Ila 60VII38 -58-6-6/25 AUTHURS: Su..harc-v, A. T. ard lue-,etov, V.A TITLE: Ra3istance to lllydraH~;:~~~le;zible ?re4jure Pi,,o.i with Braided 1,11,~tal Reinforcement (0 soprotivlonii lavloniyu na,)orny,,h ru'r:,O-Lvov 'far' opletok) 11 1,.ijom iz T PERIUDICAL: J Ila 4 II'L lir 6, 1)1j ')U - 24 (U'-SR) ABSTRACT: Fif)xibio pru-l..;ur~j .;ith bruided meta-1 are manufactured iri Ru-~jia with intornal diairett,,r3 a,, 0 , - Fle-,'ibl--m ,r: I ipes are cons truct~3~1, _,I I U 5 bajicaily, wilL,"a., in%emial rubber liner, a cDttc,n and pa or !,-,Yr,,r, ar rubber layer, one or more A layo-r-3 of braiding wit'rh rubber layer.~ between them,7 a fttr-lhor cct-G~-,n and ~.a-)er layer, and a final oj-.~- ,;rote~ctiv,) of rubber. Conventional t.ietaods cf I calculaiu-in- ~-o hydraulic pressure of te::'L-`] covered -I)il)ej are given in roference.3 1 - 7. wi th braidad r.-ietal covur~;d jAj,cj.;, the loadj from hydrauli,; proj3ura are ajsumod to be ratc,ined entirely by the braids. Card 1/6 Starting from equations (1) ani (2) for thin shells whic'i-I are not L;ubjected to bending moment, equat-ion.; (3) alvil 0-) SOV/338,-58-6-6/25 Resistance to Hydraulic Pre3suro of Flexible Pressure Pipez with Braided Metal Reinforcement are found for the tangential and axial stresses in the 'braid. K is the (tensile) load on the individual wires in the strand, n is the number of wires in a strand7 m is the density of the strand pacicing (i.e. the reciprocal of strand sdacing). The angle 0( is the angle at which the strands lie to the axis . (This is drawn incorroctly in Fig 1). Equation (5) defines m in terms of N, the number of strands (or spools) which cro3s the circumference of the braid, the braid diameter being dl. To meet the condition of equal strength in -tangential and axial directions2 the angle is usually made 550 441. In this case the relation between the internal pressure, P, and the tensile forces in the individual wires, K, is g1ven by equation (6). Here, the terin, i, is for the number of layers of braid, and C a constant which takes into account manufacturing variable3. Equation (6) is satisfactory for textile Card 2/6 braids or for the ca3e of one layer of metallic braid (i = fl, but not for two or more metallic braids. The sall3s -58-6-6/25 Resistance to Hydraulic Pressiire of Flexible Pressure with Braided Eletal Reinforcement equations which follow, lead to equation (18) which states that the pressure bet,,reen the -two braids (in a ~i,je with two braids laid u,'P at the 'equilibrium' angle above) amounts to one third of the internal pressure. That is7 the inner braid 3arrios t,..io-thirds of the load, and tae outer braid one third. Equation (19) is develo,jod for the case ,.there tho two braids are separated by an int-,r- mediate non-motallic layer, and have substantially different dianieterj. Equations (22) and (23) are developed for the case where three braids are involved (assumed to be of jub3tantially equal diameter). I i er e the inner braid t-iiLes -57U of the pressure, the i.,iiddle braid take3 285t and the outer braid takes .145 of tho internal pressure. Finally, a general equation (26) is giveng which can be a'pplied to pressure pij)es with any number of braidj$ and which takes into account differencaj in diameter of the 3ucce:;jive braids. The conitant, C11 Card 3/6 which enters into this equation takes into account inequalities in stress in individual wires. Empirical SOV1138 -58-6-6/25 He:-,istanco to Hydraulic Pre3jure of Flexible Pro:;jure Pif.e.; with Braided 111'etal Reinforcement data shows that this constant is very nearly equal to 1 in the case of a single braided pipe. Variations in tensioning are greater in pipes wiih two or more braids, and a value C = 0.9 is fairly satisfactory for double braided pipes. The data given in Table 1 compares actual bursting pressure with calculated bursting pr03sure. Calculated pressure is based on individual wiresowith a tensile strength of 15.4 k-. The figures in brackets are calculated bur3ting -,ressure, with constants, C, ap:)lied as above. The agreement is reasonably good. Further investigation was riade in order to determine the actual stress in the braids. Strain gauges of 0.03 mn diameter wire were bonded to the braids. The gauges were firit calibrated by applying thera to strands com,)osed of 10 individual wires, each wire being 0.3 mm. diameter. The calibration curve is shoun in Fig 2. Figs 3 and 4 show the results of tensiometric tests on actual braids in Card 4/6 38 r,.im and 50 rwi diat~.qter pi-oes respactivoly. The points on the3e graphs are the actual tensions as determined by SOV/1138-58-6-6/25 Re3istanco to 7`lydraulic Pre3-3ure of Kexible Pressure Braid?d Met~Ll Reinforce-ion', the calibratod sturain gaugoj, and tho solid lines repre- set-,b the values calculated from equation (26). WI-i ta -;et of -oints on a graph, the .ere are more than one -1 Q different- -;et3 are for the different layers in a 7,-,Ulti- braidt~d ~)ipe. Table 2 com.,jures the actual bur-;tInIr A* prez;~;ure of 3" ai id '0 pipes wilth the C".1-cillated uccording to equation N and to ecl,..~-ticn (26). Pil-le.-, writh one, two, tuliree and fcur layers of bTjJd L te ~ ted. Coeffici-nts2 C, of 0.9 were aI~.~)Iied for bruids, of 0." Fcr -Uhree braids, and of 0.75 'or braids. Differ-,rce3 in a6reement ray be attri")ute-I "Uho f a P-',- th-- 'u- the braiis wur e not, laid u .) exa c "Lly a I e(it:ilibriuml anz;l-;~ of 51FO 410 1 and were not 0- S-,~~Iced identically. The author-1 cGnclude that tli,,- Card 516 SOV1138 -58-6-6/25 Resistance to Hydraulic Pressure of Flexible rressure Fi.1-es wlith Braided Yetal Reinforcement results of exTerinents with standard Droduction .7ressure flexible pipes, and also with s,~ecial test pipos of 38 mm and 50 mm diarmter, confirm the validity of the calculations and equations given. There are 4 figures and 2 tables, 8 references (1 English. 7 Soviet) ASSOCIATIM llauchnoissledovatellskiy institut rezinovoy promyshlemiosti (Research Institute of the Rubber Industry) 1. Pipes--Prenvure 2. Pipen--Properties 3. Plpes--Coristmietlon 4. Pipes--Tent resulU Card 6/6 AUTHOR: Lepetov,,. SOV/138-58-11-6/14 TITLE: Calculations on Pressure Hoses of Fabric Construction (0 raschetakh naporxqkh rukavov z tkanevymi prokladkami) PERIODICAL: Kauchuk i Rezina, 1958, Nr 11,.pp 21 -25 (USSR) ABSTRACT: The theoretical section of the article gives formulae relating the burst pressure, PB I of a hose of fabric construction to its internal diameter dk 'to the strength of the fabric material K B I to the number of layers of fabric i and to the "packing density" and angle of lay of the fabric as made and under pressure a. and a.B . Coefficients are introduced to deal with stretch and change of diameter, change in angle of lay and unequal distribution of stress between the layers in multi-layer hoses as pressure increases to buret pressure. Eq (3) contains these coefficients. The ftnetions of cc, and aB take care of chg-nge in angle of lay and "packing density" as pressure increases. C~ deals with wall tldckness-diameter ratio under pressure, C" deals with unequal distribution of stress Cardl/4 2 SCV/138- 58- 11-6/14 Calculations on Pressure Hose,3 cf Fabrlc Constru--tion between layers and C 3 daals with stretch in the fab:-i,--, If the initial angle of lay (xK is 450 and the angle of lay under re8sure is asaumed to reach the equillbri-_m angle a0 M 44'), theL Eq (4) applies. This ia corrected by coefficianz C 5 In Eq (6) where the angle of lay at burst aB Is not the same as the equilibri-.1m of angle a These coefficients, with the exception of C" 0 2 for strength distribution between layers, can be found by direct meadurement on pipes under pressure (w--tb extra- polation to burst pressure), and so coefficient C~ can r_ be determined by compariaon of a,~tual burst pre3su-r-e with calculated burst pressure. Tests were made on boses 2c mm, 355 mm and 51 mm diameter, with different numbers of' layers of reinforcement. The coefficients C~ , C 3 and C 5 were determined by measurement of fabric matarla],_ uLder tension and of pipes Card2/4 under pressure. An assessment of probable values of C~