SCIENTIFIC ABSTRACT V.T. CHUYKO - T.A. CHUYKOVA

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SCIENTIFIC ABSTRACT
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USSR/Metals AnalYsis, Zinc Nov.50 "Accelerate Method for Determination of the S-1 I Quantities of Copper in Zinc," V. T. ChuykO,,A. Ya. Shebelkanovtoeva, Donets Industrial Inst "Z&-Yrod Lab" Noll, -vP 1309-1312 Method is based on partial pptn of zinc with alkali hydroxide with successive detn of coned copper with diethyld.ithiocarbamte of sodium in alk medium. ' Under these conditions, coloration of copper carbo- nate is more stable than A the weakly-alk, neutral 11"74 UM/Pt,et~alg, ~-Ans,13rsis, Zinc (ContA) Nor 50 or* acid media and may be more easily measured col*ri- metrically- than in soln of carbon tetrachloride.' Lowest copper concn, which may be detd by this method" in o.ooo4%. 0 1, 18M.741 Rapid aetermumbas at antall qunddes a copw to amt. u,%;u,,1gA, Va. Shcbelkanoviseva (boarts Ind. W. M. little as O.tXPGI7oCu in Zn can bedeid. by tbe.'%Ia carbamale method after suitable vonen. in elk. soln. The conca. is best done by %thin. of 2 N A011 atsd centrifuging the ppt. which is tht-ta tal,en tip In 601,"a citric acid aim) analy" rolorimetri- CAY. G. M. KometAl-Off ~S~R/Chemlstr .-,Analysis, Nickcl-,l Sep/6ct 51. y Method's for Determination ofi Traces of Vickel. III. Determination of 1,iickel in a Mixture of Cations of the Third ltnalyti- cal Group," V. T. Chuyko, Donets Ind Innt"I Stalino "Zhur Analit Khim" Vol V1, No 5, pp 297-299 To detn traces of metal in complex mixt 1'rom vhich inhibiting substances muet be sepd, concn process can be worked out based cn re- peated repptn of subject metal with different collectors, or on combination of this method :UWR/Chemistry Analysis, NicRel S_avbct 51 (Contd) 4ith partial pptn of collector if partial jpptn with given collector -microc: omponent patr leads t.6:1 quant concn. Proposes procedure f or'c,oncn ~."of , Ni. from mixt of Al, Cr, Fe, Mn, Co, Zn 18~T12 OR M 0. Y.T.: LOTARRVA, V.I. Concentration procedure rhim. Zhur. 16, 612-15 (cA-47"iioJl.-llo7i *153) l.,DoU Ind. Inst. T- YSSR/Physical Ch-Istry - Thexmodynamics. Thermochemistry. Equilibrium. Physico- chemical Analysis. Phase Transitions, B-8 Abst Journal: Referat Zhur 103imiya, No 1, 1957p 357 Author: Chuyko, V. T. Institution: Cherkaolk State Pedagogical Institute Title: On the Applicability of Xhlopin's Iaw to the Distribution in Systems with Close Comppnent Ratios Original riodical: Nauk. zap. Cherkas1k. derzh ped. in-tu, 1954, No 6, 55-58 (published P in Ukrainian) Abstract: It is ohm that the Kolthoff equation (H. C. Jutzy and L 14. Kolt- hoff, J. Amer. Chem. Soc.., 1937, ~Z 916), vhich gives the distribu- tion of 2 4ctrolytes betveen the solution and the residue at equal concentrat~:Mns of the components, is identical with an equation which had been deduce& earlier (Ratner, Tr. Goo. radievogo in-ta, 1937, Vol 3) and which gives a theoretical formulation of Khlopin's law. In the opinion of the author, it may be considered as established that Card 1/2 ,USSR/Physical Chemistry - Thermodynamics, Therpochemistry. Equilibrium. FhYsico- chemical AnalypU. Plane Transitions, B-8'. Abet Journal: Referat Zhur - IQ)Imiya.. No 1y 19", 357 Abstractt Xhlopinle law iEI applicable over a wide range of component ratios. Ratner's equation gives a more exact description of the distribution of the 2 electrolytes than Kolthoff's equation, Card 2/2 Distribution of small quantities of hUmpth betweeft thO solution of copper nitrate and the precrptritro-ottained with -11, 1 " basic salts.-V. 1'. ChtlTk-o and4. D. Gol'tsomn (N. S. ~hul4hchiv Ti-on-TR"r =nst.) Orr-a-1117TE-7 -Mur. 20, K"tiT154,Kin Russtaill).-Ftic distribution of Ili was stadied by varying the conen. of 111 (0.02-5 ing. lit 10 nil.). time of contact (6-30 tuln.). concit. of Cu (0.1-0.0125 g.1 mi.), Anti On. (0.05 mg. Ili in 16-100 nit. of qo1u.). The reversibility of the process wits also studicil. Partial pptn. df Cu wai done with NaC(h or NaOll. At 5 nig. of III In 10 mt. of soln. All of it %vent Into the ppt. At 0.02-0.25 mg./10 ml. the distribution of 131 t)ctwrctt soln. and ppt. was pructleally const. Time of conuct (slinking) had no significant effect beyond 5 min. The promw; was reversible. This was established by slinking FL Co lipt. contg. Bi with a CUNO, soln. free of Bi. Win. of the original soln. (10 mi. contg. 0.05 trig. Bi) from 15 to 100 mt. caused more D1 toconeentrateiritheptit. Reducingtheamt.ofiCuInsoln. had a'stmilar effect. It Is concluded that adsoTlort of III by basic Cu salt is cs-wittially an exchange reac: on. Iloseh, ORMO. V-T.: CHUM). K.G. [Chujrko, K.H.] ~ Using the asudidcromethod, in studying qualitative analysis at the Teachers' Institute. Nauk. zap. ChDPI 8:11-14 156. (MIRA 11:2) (Hicrochemistry) (Cherlmsey-Teachers, Training of) MAKRIKO, A.U.; CHUYKO, V.T. Coprecipitation of copper tracee with the 8-hydroxyquinolinates of some metals. Nauk. sap. ChDPI 8:109-112 156. (MIRA 11:2) (Copper) (Quinolinic acid) (Chemistry, Analytic--Quantitative) J, F Chill 0 an Yk 46i p) 'fu It tile vpt, so tbO b the thl ~11. wconft eaq~: w~ I' edikied NO ir progrc-451110 v I alfitmilt of "I - I ~ -d:' f M-PbU I rot, of xri:.tcetatc D (i,,j 2 J 9911, of tho'Cu-when SO jig is initially Inc-swrit, an ;Ient,' %~Iwn 5 to 10 jsg~ is initially lire. dy "4 to, d the jcAll: ~lt liffle c(liniplete c1l, Ire Ca!;~s.-r,1j6fi the S-Ilydtoiy&juiaqbnl~ oiniploxci -ara*extra ded with cflcj~'_ fijllp~'cd h'Y treatillent of tho extmct witi, U NO, ~md C."dracHall of ('11 froul the acid extract ivith dithirulle Covi-l mil bu ;act,- stilt, A I d will il"I by "em -A - . I - - - -- ;, .- . of -ti acticin '0 c is hilothod upp it-d to sal s of Ni uA 6) I su errmll--c-11 is incompt"10 is _y extrveted Und Santa of thr. Ni nr Co apiwio-H in th,.- cllcl~ thu ivors. X ~'O, AUTHOR: Chuyko, V. T. 78-3-29/35 TITLE: Methods of Concentrating Traces of Metals by Entrainment in it Precipitate. I. Concentration by Co-Precipitation. (Sposoby kontsentrirovaniya sledov metallov uvlecheniyan v osadok. 1. Kontmentrirovaniye soosazhdeniyem) PERIODICAL: Zhurnal Neorganicheskoy Khimii, 1957, Vol.II, Nr.3, pp. 685-695. (USSR) ABSTRACT: Conditions have been found which secure over 90% co- precipitation of traces of metals forming slightly soluble hydroxides with the hydroxides of other metals during concentration by precipitation of the collector- substance by excess reagent and by partial precipitation of the macro-component as hydroxide. For the first method of concentration this requires a pH value for the solution greater than that for the precipitation of the hydroxide of the metal being co-precipitated; the attainment of the solubility produet of its hydroxide is not then of prime y importance. Nor is the Card 1/2 relatively complete eo-precipitation affected by the 78-3-29/35 Methods of Concentrating Traces of Metals by Entrainment in a Precipitate. I. ptesence of other electrolytes, differences in properties of the hydroxides of the metal being concentrated and of the collector, temperature, the duration of ageing the precipitate after co-preoipitation or the order in which the reagents are added. For concentration by the second method a definite, empirical ratio between the macro-and micro-component concentrations must be attained; otherwise the micro-component distributes itself between the solution and the precipitate in the normal way. There are 10 tables and 16 referenees, of which 13 are Slavic. ASSOC IATION.- 'Chetka say Pedagogical Institute. (Gherkasskiy Padagogicheskiy Institut.) SUBMITTED: June 25, 1956. AVAILLBLE: Library of Congress. Card 2/2 ( u Xkc / I,` , CMNKO. V.T. -r Distribution of an electrolyte admixture between the salt solution and crystals of the other electrolyte. Zhur.neorg,khim. 2 no.9:2264-2269 3 '57. (Min 10: 12) l.Charkasekiy pedsgogichoskiy institut. (Ilectrolytes) SOV/137-58-11-23815 Translation from: Referativnyy zhurnal. Metallurgiya, 1958, Nr 11, p 277 (USSR) AUTHOR: ChuykQ ['Ghuyko, V. T. TITLE: of Copre`cipi"t'~a_ti,2o"4n_, With Metallic Hydroxides of Metallic Irnpurities Which Form Dissolution-resishint Hydroxides (K %-opl'ostl soosazlideniya s gidrookisyami metallov prinieseyn-etallov, obra.,uyu shchikh trudnorastvorimyye gidrookisi) PERIODICAL: Nauk. zap. Cherkas'k derzh. ped. in-t, 1957, Vol 11, pp 335- 34 3; in Ukrainian ABSTRACT: An examination was made of the phenomenon of coprecipitation (C) of Cu (N.i) with basic salts (hydroxides) of Fe and Al from dilute solu- tions and also of adsorption (A) of Cu (Ag) on Mn02. C was performed from bicarbonate solutions while Cu was precipitated from acetate solutions under -conditions in which 30 - 700/o of the metal would be included in the precipitate. The author notes that extraneous electro- lytes have little effect on Cu, whereas an increase of the buffer mix- ture brings about a decrease of C. It is assumed that Cu (Ni) is ab- sorbed by the precipitate during G in,the form of hydrolysis products Card 1/2 and, therefore,' factors that regulate.!'the hydrolysis should also regulate ds SOV/137-58 -11- 23815 On the Problem of Coprecipitation With Metallic Hydroxides of Metallic (cont.) the C process.* It is shown that the A of Cu and Ni salts on Fe(OH)3 has a hydro- lytic character and that the C of Cu (Ni) increases with the decrease of the stabil- ity of the compound binding them in the *solution. If Fe(OH)3 contains an adsorbed or a coprecipitated electrolyte, the absorption of another e1qctrolyte from the solu- tion can occur by means of ion exchange. Upon a decrease'in the sirent),th of the solution the A of Cu by the MNO? precipitate increases, whereas the A of Ag remains unchanged. It is concluded that the distribution of Cu(Ni) admixtures between the solution and the precipitate of Fe(OH)3[ AI(OH)3] during G and A follows different, laws which is an indication of*the complexity of the mechanics of the absorption of electrolytes by metallic hydroxides. The process of absorption of metals by Fe and Al hydroxides (basic salts) in the form of hydrolysis products predominates, Therefore, the effectiveness of C of metals which form dissolution- resistant hy- droxides can be affected by regulating the extent of the hydrolysis of the compounds of these metals during the C with metaflic hydroxides. Metallic ions are adsorbed on the MnO2 hydrate by means of exchange with water ions. V. P, Card 2/2- S~JV/ 156-513 -2 - 28/4 8 AUTHORS: Chuyko, V. T., Mamenko, A. U., Todorov, 1. A. TlTLF,: ~~~~Bismutb-Traces From Metallic-Salt Solutions by Means of PartJal Precipitation of Ibe Macro-Component a7, Phosphate (Kantsentr-4rovaniye sledov vismuta iz rastvorov soley metallov putem chastichnogo osazlideniya makrokomponenta -; vide Posfata) PERIODICAL: Nauchnyye doklady vysshey shkoly. Kh-imiya i khimichesk-aya tekhno~ogi,Ya, 1958, Nr 2, pp. 317-319 (IJSSR) -ABSTRACT: The determination of bismuth-trace3 in metals where they often are an undesirable imDurity, is usually carried out according to the concentration by means of carrying down the salts ov. these metals into the depooit of the solation. Fcrric hydroxide, manganese diaxide, metallic sulfiden and oUers are used as bismuth-collectors (Ref 1). The use of thes;! collectors in- volves either the separation of biomu~lh from the Or r. reg(!Iation of the plll-valun of the i-,aititJon. it is i~rir- - ' - concentrnte bi~~noiti) - as indic-4f;" i- 11- - -: SWIT qmaltles of the, Mt do not vr~ the photawtrie Card 11 :Lan of:Ummitbe "Parait --.8. it Concentration of Bismuth-TraceB From Metallic-Salf. Part.lal PrecipItation of the Macro-Component as Plicsphazt, of the methods described ir - -. references 4, ti,nd 6that f-- quantitative co-precipitation of bismuth can be ottained wi.th a partial precipitation of copper: a) by JAIncreasir.g the shar~- of the macro -component in the deposit; b) by mearis of fracti6n- ation; 0) by increasing the relation betwec-n the IP -values of both the macro- and micro-componetit; a ~.uitable precipitator must be selected for this purpose. The authors sf-lected the last method c) and used sodium phosphate for this purpose. Mor;~- over, they partially precipitated the macro-component from the concentrate in order to reduce its quantity in the deposit. Bismuth was photometrically recorded as a complex compound with thiourea. The tests have shown that the cc -precipitat ion of bismuth is in the same way effective rii.-an precipItating the 9 macro-component as phosphate or by introduzing it readily pr~~- pared. The extraction of bismuth from f;olutiori-O by 14Pans prepared metallic phosphate deposits can be uned for purifying. the salts of the same metals of The above 'r,ismuth-concentration was used by ~he aathor!3 for isolating caDner. ma&nesium, and ~niAt'uros of con-per and Zinc from sa-11A, J-1 solutions. Bismuth apparently can be in :,he ("o I I Ce I I I, ratio r (ii, B i From Met a I I ic-Sait Sjolut ioo:.' par4 -J a I Pr;~ c i D J. to n o Ma c r o - C c, ji p o n C-. n t a s P h o s p I i a t wuN from salb ooliltions of other mr-talo which f orm P, z3 p! i ('.f low solubility. There are I table and 7 v.-hich Eire '.ioviet. 'MSSOC'EATION. Kafedra obshchey i sn-:tliticheshoy kljimii Cherkaaskogo P-~(UA- gogichen':ogo institut-it im. 300-leVyh vu.,.soye-dinerillya 3 (Chair of General. and Chemist:,,y Cher4a.-i--sy lpLitltito of PedaEogios ameni on the 0~:cssivj, of Tercen,.~-nary of the Reunion of the Ukrpvine With Russia) I~oBMITTED: N~~-,rembllr 8, 1957 Card 5/5 AUTHORS: ~~~~odorov, I. A. SOV/j56-5a-3-22/53 TITLE: The Concentration by Co-Precipitation of the Ir,-.purities of Arsenic and Phosphorus in Depositions (,Kontsentrirovn.niye primesey myshlyalrl-_ i fonfora uvlecheniyer, v ooadok) PERIODICAL: Nauchnyye doklady v,,,,r,:-,Iiey nhkoly, Khii-.iiy,- i 1-himiche-kaya tekhnologiya, 195a, 11r 3, pp. 4/05 - 497 (USSIZ) ABSTRACT: The possibility of the concentration of arsenic and phosphorus in depositions from solutions of zinc and ~ma-nessiura salts was shown experimentally. It was found that th-~, carryin--down of microcomponents in the deposition amounts to almost 90~% By means of this method it 12 1)osniblo to concentratearsenic and phosphorus from highly diluted solutions (dilution 1:109). The carryin-flown of the microcornponconts arsenic and phosphorus remains the same when instead of a partial precipitation of the zinc and ma.-nesium salts of the sample investigated newly pre- cipitated zinc or mngncsium o~:idc is added. The mechmism of the carrying-down of thane arsenate and phonphate microcomponentn is one of adsorption. Th(,re are 2 tables and 1 reference, Card 1/2 "?hich is Soviet. The Concentrntion by Co-Precipitation of the 3011/156-5a-3-22/53 Impurities of ArOcnic and Phosphorus in Depositions ASSOCIATION: ICBteam ':himii Cherk-asshogo gosudarstvennogo instit-Lita im-300-leti,-a vo--soyedineniya Ukrainy s Rossiyey (Chair of Chernio-try at Cherkassy State Universilty i=ani 300 Years Unification of the Ukraine With Russia) SUBMITTED: November 4, 1957 Card 2/2 LOTAREVA, V.I.; C11UYKO, V.T. Concentration of iron traces from solutions of nickel, cobalt, and zinc salts by a partial. precipitation of macrocomponents. Trudy LTI no.48:119-123 '58. (MIRA 15:4) (Iron--Analysis) (salts) CHUYIM, V.T. Conference of chemistry teachers at the pedagogic institutes of the Ukrainian S.S.A. Ukr. khim. shur. 24 no.1:133 158. (MIRK 11: 4) (Ukraine-Chemistry-Study and teaching) QHUYKO. V.T.; TODOROV, I.A. Concentrating vanadium traceo by coprecipitation with metal hydroxides. Izvevysouchebozave; khirA.i khimetekbe 3 no.6;98E~-990 160. (MM 14:4) 1. Ternopollakiy meditoinskiy institut i Cherkasskiy pedagogicheskiy Institut. (Vanadium-An&lysis) CHUYKOY V.T. Classification of the types of adsorption of electrolytes by heteropolar sorbents in very dilute solutions, Izv,vys,uc~.eb.zav.; khim.i Id'".tekh. 3 a~*6;1017-1021 160. (RM 14:4) I* Ternopol'skiy meditsinskiy institut., kafedra obshchey khJm4i. (Adsorption) (Electrolytes) q#~MD ~V.TCHUBKOV N.M.; SHPIKUIAV V,M! Determl tion of copper in biological material and i* concentra- tion by coprecipitation. Lab. delol. no.2:33-36 F 161. (MIU 1421) 1. Kafedra neorganicheskoy khimii ( ~-doteent V.T.Chuyko) zav* i kafecka fakulltetskoy ihiru~gii (zav. - Prof. A.G.Martynyuk) Ternopoltekogo meditainskogo institute. (dir. - doteent P.Ye.Ogiy). (COPPER-4ULTSIS) DIYACHENKO, N.P. CHUYKO, V.T.-. Methods of concentrating traces of zinc by coprecipitation. Zhur.- neorg.khim. 7 no.4:903-909 Ap 162. (MIRA 15:4) 1. Ternopollskiy meditsinskiy institut, kafedra obshchey khimii. (Zinc) (Precipitation (Chemistry)) CHUYKO, V.T!j WYAGHENKOY N.P. Coprecipitation of traces of indium with basic copper salts from a copper nitrate solution and with zinc sulfide from a zinc sulfate solution. Zhur.neorg.khim. 7 no-4:910-914 AP 162. (MIRA 15:4) 1. Ternopollskiy meditsinskiy institut. (Indium) (Salts) (Precipitation (Chemistry)) CHUMP V. T. Principal laws governing the distribution of electrolyte ions between liquid and solid solvents. Isv. vys. ucheb. zav.; khim. i khim. te". 5 no.5:698-702 162. (MM 16:1) - 1. Ternopol'skiy meditainakiy institut, kafedry obehebey i biologicheskoy khimii. (Crystallization) (Ion exchange) (Electrolyte solutions) L 11409-63. S/032/63/029/005/002/022 E',1jP(q)/EWT(m)/BDS ASD JD AUTFICH: Dlyacbenkol N.F -and Chu yko V.T. TITLE: Determination of ultrasmall iincVbapurities in cadmium salts and salts of metals not precipitated by hydrogen sulfide PERIODICAL: Zavodskaya laboratoriya, v. 29, no. 5o 1963, PP 522-523 n..XT: When.cadmilm hydroxide is partially precipitated from a solution of, cadmium sulfate the zinc present in the solution as an Impurity is distributed between the solution and precipitate-. The Zn can be quantitatively extracted with CC14 if the Cd is in the form of the nitrate or sulfate and a considerable excess of iodide is added to form complexes with the Cd ions. Thiourea masks the influence of other heavy metals mucb more effectively than thlosulfate., ordinar- ily used. Previous investigations showed that traces of zinc are quantitatively co-precipitated with CdS from solutions containing metals not precipitated by H2S at pH 2. This was used as the basis of a method of determining ultrasmall (0-5 - 2 micrograms/gram) impurities:of Zn in such salts (Cd. Al,, Cr, Fe, Ma and Vi sulfates wereused). The article has 1 table. ASS,~CIATION:Ternopollskiy gosudarstvennyy meditsinakiy institut (Ternopol* State Medical Institute) Uar~d The Second All-Uniew Conference. on the Preparation and Analysis of High-Purity Elements, held on 24-28 December 1963 at Gorky State Unf- versity im. N. 1. Lobachevskiy, was sponsored by the Institute of Chemi- ,stry of the Gorky State University, the Physicochemical and Technological Pepartment for Inorganic Materials of the Academy of Sciences USSR, and the Gorky Section of the All-Union Chemical Society im. D. 1. Mendeleyev. ,The opening address was made by Academician N. M. Zhavoronkov. Some _pers were presented, among them the following: _pa V. A. I %k~uk, -and 1. V~ Ne rebetsilka-. Coprecip- T yko, itation or'tYdces TM.- Cd) with iron hydroxide. Z. G. Fratkina and V. S. Shebunin. Spectrochemical analysis of metal impurities concentrated as volatile fluorides. (Zhup, RNAL Khini 19 At'), 01 i, Y_ -77 - 7 CHUYKO, V.T.. Principal resulta-and the objectives of further studies in the use of inorganic cc')recipitants for concentrating metal traces. Trudy Kom. anal. khim. 15t236-243 165, (MIRA 180) CIUM050 V.T.v SHPI-OLA, V.M. Determination of copper impurities in i-ron and nickel salts. Ukr. khim. zhur. 31 no.6t638-639 165. MRA 18s?) 1. Ternopol'skiy gosudarstvennyy meditainakiy institut. CHUYKO, Ye.; KURAYEVA, N. --C~ Mimination of diphtheria in Sevastopol. Pediatriia no.6:55-- 59 161. (MIM 14--9) (SEVASTOPOr,-DIPHTFIERIA) y 1~_~ , TI-FENY E.V. _A~; BLORB, G.A.; OVCHAnNKO, F.D.; GUT)OVICH, N,V,.. lb UK) Activation of kaolin with the cation-actolve substance "alkamon OS-2.11 Kazh.-obuv. prom. 6 no.9:13-16 S 164. (MI-M Y, t 12) 71 1 7 a 7 : _ ACCESSIOR-M XBOD2664 ~41i:h'._'organosilanes,,- to repare:04;,spicimian; _eg~ vinyitrichl6rosilarip-~:~eActed-b4 y p - ane hydrol~sis.and f6rinatioil-of silox type bo nd6.,. Ififrared-analysis shaded the ' presence.of both double ~bonds and-: Si-M_ -Si bond s in -this silica, andIdemonstra- ' - A_ -~up to n-early- .5DDC. Allylaxysil .ir-a was e stability of i" don d ted_~ifi s A -.carbon:bOn a shown to be f ormOd by- f c)rmation of~ Si-4- --bonds which. were stable to ZOOC, the: oxy-- and~- 'on:heating~.to~-3DO and 50DC. Propy:L -,amount of. hydroxyl. groups iner e4sing. , - . -ethyl-mc~dif ied stlica wqs -also. prepared Used aa,-f illers- in b utadiene-styrene r -s d the'butadiene acq 6ni tri let' tooplymers SKN-2615and SIM-40, crossIlTdting., and:-markedly' improved the mechanical olef in,;-mF~dif ied iilica i d pa ticula~rly~.the"ten6ile:-6tienkth:-46 compared with non-mcidified propert tas an x ' -carbon black' -or a y m silica ~ ("white A I odified silica, Aminopropylsilica war y reaction i o ltriethoxp~silane and-used as a filler for'. :obtained -b qlth rmaminopt py SKS 30-1 carbo latedp~ou~adiene-styren-e.r'ubberi, b interaction with rubber- 6arboxyls - the terminal amino them: b r'Save an increase in c groups of rub e ross- -decr se in-relative elo ation linking -And mechOical -strength, with::a'~'sIiSht:. ea ng Carboxylated prepared from -white-:carbon black U-333 via vinyla-- ted si.llica, by-. rpa;ction V Lth..v~pyltrichlorosi lane: and cop6lymerization with metha- _ crylic acid With SMIV,-15AV(but aAene copolymer with 157. 2-methyl-5-vinyl- pyridine), ~he motjif7ied R=er improved.uhsile strength and mechanical para- meters :as - compariui - Oith ,:ton-modified'.zillca 'Ilia infrared analysis was carried~~. . V ot 0 Sidot v~ anI the -carbox_ylateVsilica~vyas studied in detail by CorcNi A& N '0. L 10757-63 E PR/FIFP (J) 10k(c)IRIT (m) /RTS-AFtM/ RM INW SSION NRo AP)M:291- S/IDlYV63/ODD/OD6/003VO034 M AL ea d); -rappanyuk, &V.; I Mmau.: 1. H. J(Dec so THORs Ckuyko j A. A LL ftmd I' U, I Chuyko, Ye. A. Ool chemical' filler- 11 aIiwface mid oniginIC, ra TITLEa -Effect of fte natiLre: of- on j the properties of rublaors SDMMEs. ~Xauchuk i ro-~inavno, G#~~ 1963 X ,70PIC TAGSt rubbers 30," SKK-40j~ ~Wj, finerej: eiHOA, Belakei modffiod ailioal, Acaa vukazisation, vulconizate -proportioaj t a tr hi. j vinyl-;a~bstituted mil. m mil a 6ngt modulusv'swoningi icMaing raftation, butadlene-styrene rubbers nitrUe rubber, vckUum butadiene . rubb)ri ailica ourface, kydrwtyls, .000, The effoot~of the ONINA091: t filler ABffRACT i rT of the surface anthe physico- I .. hap at mechanical proper udied. Wtadieno-st_yreneNS -Vies'of rubbers lir nitrile (SM &PW4 o9dium butaft SO)' rubbers loaded with unmcWied Silica one 51 wA with silica whose -surface hydroxyls had been a~batituted by allyl(my or vinyl radicals were itsed, , Use ~of modified silica in standard rubber nixes (containing 100 parts rubbeir and !i0 to 60 parts filler) was shown to improve the jksiqq-_ mechanical Portion of the vuleanizates. For examplej, the tensile strength of -Card. F 'I.: 10757-63- -"A'WE=ON N Rs AP3W.*:291 SKN-rO. rubber *~ontgdlxing 60%,filler- 106r8wed trce U6_0'k jVos wJtb unmodified' 1 allica to 163,6-10 jid6m* . with vinyl-substituted - silica WnYl silica) I the respective values of the modulus at 600%'elongation and, swelling at equilibrita An benzens'were 55.2 and 134,kg/cm2 and 30 aid 15%. This improvezint was attributed to, greater. co mpatibility of the fine r. g:A the rubber and to a reaction I between the olefin radicals of-tbe filler surface and.the rubber 'With the l formation of C-C and, O-S-C IiAages. -The effect, was: studied of ionizing radiation ._~from a'CdO souree..at a dose rate of7ri./See on nonloaded SKS-30 rubber and cm d (ratio" ~SKS-30.loade -1/1) with unmodified and with.modifted silica (Belaks) con- taining 45% vinyl.. m9thyl., or at4lradicals. Irradiation did not arfeat the tensile strength and -the modulus at 100% elongation of unloaded rubberbut con- siderably improved thi)se properties in;loaded rubbers,. particularly with vinyl silica. : The m4udmum offect of. irradiation is attained after 48 hr. lhese~ re- - ul s ts were attributedU the participation of the -finer in the formation of the three-dimenBiOnal,metworke In-particular, theallyl or vinyl groups of -the filler and the tubber macromoleculen form radicals which link the two through the tion of covalent bondo, It isconaluded-that the structure and the physico- i mechanical properties of vulcanizates can be controlled by mcdifying the naturb of, the Organic,radicals (in the silica surface Abennoer of such radicala, the compo- sition-of the vulcanisiates, and-the method of vulcani2ation.-.,Orig. m!t. haS3 Ccird I i .2W;A6 ,-,.,;-ALL tjt(r: 6022447 SOURCE CODE: UR/0069/66/0'28/002/02"18/0282 AUVHP: Tertvkh, V. Cbm", Ye.. A. __ Chuik-o, E. A.; Chuyko, A. A. -- Chuiko, J211 'N A. A.; Neymark, 1. Ye. 1:26 'ORG: Ingti&tj *of Physical P1k9mistry, AN TJkrSSR, Kiev (Institut fizicheskoy fai AN Uk-x SSR) TITLE: Amino-organo, silicasts chemically active sorbents and fillers of polymer materials SOURCE: KoUoidnyy zhurnal, v. 28, no. 2, 1966, 278-282 TOPIC TAGS: organosilicon compound, polymer physical chemistry, chemical absorption ABSTRACT: Clarification of mechanisms by which acid substances react with an adsorbent surface was sought through an analysis of infrared absorption spectra for the adsorption of hydrogen chloride on amino organosilica and of methacrylic acid on an amino organoaerosil. A supplementary analysis concerned adsorption of methacrylic acid7on the named aerosil from an aqueous solution. Another aspect of the study involved reinforcement of the carboxyl-con- taining polymer SKS 30-1 by dispersion type arnino organosilicic fillers. Results indicate that Aemisorption occurs, with an accompanying formation of chemical compounds on the adsor- bent surface. Amino and vinylaTnino derivatives of silica white A, used as fillers, reinforced the carbo.-WI -containing polymer through interaction of functional groups and the accompanying Card 1/2 UDC: 541.183.23 4- _41266-66 ACC NR: AP6022447 crosslinking of polymer and filler. With great satisfaction, the authors express their gratitude. to Candidate of Physical-Mathematical Sciences A. N. Sidorov and Academician A. N. Terenin for their advice and assistance in performing the work. Orig. art. has: 1 table and 3 figures. SUB CODE: 07/ SUBM DATE: 22JulG4/ ORIG REF: 002/ OTH REF: 001 '/ C Card 2/2 __/_ L 7 EWT in &VP /T UP(A) W-V/RM -00733-L6 -ACC NRt AP6024846 i SOURCE CODRI UR/0073/66/032/004/0371/0377 AUTHDRI Chu~rko. A. 0; G, Ye.j Tqjgh, V. A.; Chuykog Ye, A,; Artemovp V. A4 NeYmarki r.-Ye.; Th nr& V, ORGI Institute of 11bysical Chemistryl AN UkrSSR (Institut Micheskoy khsmii AN TJkrsstc)- TITIES Carbmtylorganosilical - chemically active fillers for polymers. Fsport No. 1. Synthesis and adsorption perties of carboxylorgaWailioas, and their use in the re- Imforeement of virqlpyridine rubber SOURGE1 Ukrainskiy khimi6heskiy zhurnals V. 329 no, 4,11966, 371-377 TOPIC TAGS: silica, graft copolymers, synthetic rubberp finer ABSTRACTt Carboxyl derivatives of S02 were synthesized by copolymerization of me crylic acid$rith vinyl siUcas having various quantities of grafted vinyl groups on their surfi4e. IR spectroscopic and ion exchange methods confirmed the grafting of methaorylAo acid to the surface of vinyl silioa. A study of the surface characterie- ties showed that methanol., diethylandnes,,and pyridine am chendsorbed on the acid func- tional groups of the carboxylorganosilicas, forvdng the corresponding surface mompound% Filling of a virylpyridine polymer SS~K~W-11 with carboxylorganosilicas causel a re- inforcement of the polymer systemp probably because of a chemical intoraotion 1"tween the carboxyl. groups of the filler and the basic pyridine groups of the rubber imacromdl- Card 1/2 MXt 1 541.182.23 CHUYKO, A..V., kand.teklin.nauk; CHISTOVA, Ye-M., kand.tekhn.nauk; ROMODANOV, A.N., inzh.; CHUYKO, Ye.S., inzh. Floor deformations in enterprises of the canning industry. Prom. stroi. 42 no.2:19-21 165. (MIRA 18:4) TAYTS, N.Yu., do):tor tekhn. nauk; KLEYNER, M.K., inzh.; ZAVALISIIIN, Ye.K., inzh.; KALUGIN, Ya0P. inzh.; FALILEYEV, I.L., inzh.; KAGANY R.I., inzh. [deceasedi; Prinizall uchastiyei POPOV, V.N. jnzh.;_9TUWvJ,-A.A., inzh.; MINUKHINA, L.N., inzh.; KHATSAREVICH, V.R., inzh.; TOLMACHEVA, I.A., inzh.; BAZHENOVA, VA., inzh. Technological and thermodynamic characteristics of strip heating for the continuous furnace welding of pipes. Stal'24 no.8:746-750 Ag 164. (MIn 17:9) 1. Ukrainskiy nauchno-issledovatellskiy trubnyy institut, Urallskiy nauchno-iseledovatel'skiy trubnyy institut i Chelyabinskiy truboprokatnyy zavod. /1'r V~ -'7 1115;~ AUTHORS: Ptushinskiy, Yu.G. and Chuykov, B.A. 109-12-4/15 TITLE: Mass-spectrometric Determination of the Composition ol '* the Residual Gases in Electron Devices with Porous Metal-film. Cathodes (L-cathodes) (Mass-spektrometricheskoye opredeleniye sostava ostatochnvkh gazov v elektronnykh priborakh s poristym. metallo-plenochnym katodom) PERIODICAL: Radiotekhnika i Elektronika, 1957, Vol. II, lio.12, ,USSR pp. 1497-1501 ( ABSTRACT: The method of measurement was similar to that employed by G. Fikus (Ref.4). The investigationias carried Mthi*erQ e - analyser tubes fitted with porous metal-film catho sprovided with barium oxide fillers (BaO + 1091o Ta). After the sealing off, the pressure in the tube was reduced to 10-( mmHg. A spectrogram was then taken for a cold cathode (spectrogram of the background) and the cathode was next heated to a temperature of 1 000 C and a new spectrogram was recorded. The results are shown in Fig 1 which illustrates a spectro ram of the background (shaded are;s3 and an initial spectrogram Non-shaded areas); the figure relates the value of the spectrometer current to the atomic mass. From the figure, it is seen t at the tube with an L-cathode operating at a pressure of 10-~ mmHg contains the Cardl/2 following residual gases: hydrogen (m = 2) , helium (m. = 4), 109-12-4/15 mass-spectrometric Determination of the Composition of the Residual Gases in Electron Devices with Porous Metal-film Cathodes (I-cathodes) nitrogen (m = 14 and 28), carbon monoxide (m = 28), oxygen (m = 16) and a small quantity of chlorine (ni = 35 and 37). Further experimental results are .' shown' in Fig. 2, which represents the spectrometer current as a function of time.for various residual gases; the curves of Fig.2 for periods up to 200 hours were taken at zero cathode currents,,uhile after 200 hours, the cathode was operated at 20 mA. The aim of this work was not the determination of the quantities of various residual gases, but rather the detection of all the possible gases and their mixtures. The author expresses his gratitude to the Corresponding Member of the Ac.Sc. Ukrainian SSR N.D. Morguli& for his valuable advice. There are 2 figures and 9 references, 5 of which are Slavic. ASSOCIATION: Physics Institute of the Ac:.Sc. Ukrainian SSR , Kiyev. (Institut fiziki An USS4 g. Kiyev) SUBMITTED: May 8, 1957- AVAILABIZ: Library of Congress Card 2/2 A7 AUTHORS: Ptusbinskiy, Yu.G. and. B*A* 109-12-9/15 ,~huykov, B.A. TITLE: Diffusion of the Strontium Vapours through the Plug of a Porous Metal-film Cathode (D-cathode) (Diffuziya parov strontsiya skvoz' Subku poristogo metallo-plenochnogo katoda) PERIODICAL: Radiotekhnika i Elektronika, 195?, Vol. 11, 140 12 pp. 1530 - 1535 (HSk) ABSTRACT: The problem has been investigated by a number of authors (Refs. 1-6) but it was felt that an additional investigation was justified. The experiments were carried out on a tungsten plug, having a porosity of 0.2 (see Fig. 2a)i the velocity of the strontium vapour diffusion was compared with the corres- onding free flow of the strontium vapour from a "black body" see Fig. 26). In both cases, the disptnser contained the same ~ mixture (Ba, Sr)CO which was marked by the radiolative isotope 89 3 e Sr and a quantity of tantalum powder w.hLelr!~w"/in a tantalum ampule having a siare-like cover. The experiments were carried out in a special tube (see Fig. 3) which contained a fixed cathode and a system of seven movable collectors. The presence of the collectors permitted the measurement of the velocity of the diffusion as a function of temperature. The measuremgnts Cardl/2 were carried out over a temperature range of 1 350 to 1 550 K. 109-12-9/15 Diffusion of the Strontium Va ours through the Plug of a Porous Metal-film Cathode (I,-cathode5 The results are illustrated in Fig. 4. This shows the pressure of the strontium va-Dours as a function of temperature to a semi-logarithmic scale. The Curves 2 and 3 refer-.,to the pressure above the surface of the cathode, while the Curve 1 relates to thq~,pressure in the chamber of the cathode. From the above, it is concluded that diffusion of the strontium vapours through a fine plug,having a porosity of 0.2,is mainly due to the migration mechanism (over the investigated range of temperatures). The jump in the vapour pressure between the surface and the chamber ranges from 280 to 1 800 for the investigated temperatures. It was also found by interpolation that for the normal operating temperature of 1 000 'C, this jump would be equal to 100. The author expresses his gratitude to Corresponding Member of the Ac.Sc. Ukrainian SSR N.D. Morgulis for his interest and valuable advice. There are 4 figures and 10 references, 6 of which are Slavic. ASSOCIATION: Physics Institute. Aff. Ukrainian SSR Kiy6v (Institut,fiziki AN USSR,. g. KiyevJ SUBMITTED: 14ay 5, 1957 AVAIL.ABIE: Library of Congress Card2/2 rf. JU-0 S-./600 66166 1LUTHORS: Mcri,`Ulis, IT. D., Ptushinskiy, lu. ,-.OV/20-128-5-18/67 Chuykov B. A TITLEs Some Specific Features of the Partial Adsorption of Residual Gas Components at Very High Vacuwa PERIODICALt Doklady Akademii nauk SSSR, 1959, Vol 128, Nr 51 PP 930-932 (USSIR) ABSTRACT: In the present paper the authors investigate the properties of a "natural" mixture of residual gases generally present in electronic devices at high vacuum. For this investigation the authors use a mass spectrometric device intended for investi- gations in the field of high-vacuum processes. The inside of the mass spectrometric analyzer tube employed was fitted with a long tungsten band. This tube consisted wholly of glass and was soldered. The pressure of the rosidual gases was p - 1.10-8 torr. The tungsten band served as the basis on whose surface the components of the residual gases investigated were adsorbed. A schematic representation of the mass spectrum of these gases is given in a figure. The present problem was investigated by the well-known "flash" method. The relative Card 1/4 degree of adsorption A I/Im of each component of this mixture Llik- 66166 Some Specific Features of the Partial Adsorption Q V/20-128-5-18/67 of Residual Gas Components at Very High Vacuum may be determined from data given in the above-mentioned figure. This degree of adsorption is proportional to the mean - Lim BNM n - condensation probability k m : =m ~ PAM - Ckm , where 11m denotes the total amount of gas adsorbed within the given time. The following interesting conclusion is arrived at: k (He) = 0' i (H (N ). In order to obtain more exact M m 2 m 2 data on the specific features of adsorption of each gas component in the mixture, the partial adsorption rates were determined by measuring the eependence of the quantity M M on the time t of previous adsorption exposure. This dependence is represented in a diagram for the 2 main oomponants H and N For comparison, the dependence AI is shmvn for t99 totai'llf-lash" of all gases in the ion source. The total pressure of the gases amounted to p' - 1.10-8 torr. The desorption of the components H2 and N2 from tungsten after Card 2/4 extremely long exposure of the latter in the residual gas atmosphere 66166 Some Specific Features of the Partial Adsorption of SOV/20-128-5-18/67 Residual Gas Components at Very High Vacuum can be investigated more closely by means of the temperature variation with respect to time. In doing so, the authors observed the polyphase nature of the adsorbed states of E2 and N2 on tungster4 which complicateo this phenomenon even more. The third diagram gives the characteristics of partial dependence on adsorption of the "pumping out" of the gas components 112 and N2 from the mixture of residual gases, after the tungsten band had been freed from these components by "flashing" at high temperatures and then cooled. The curves shown in figure 2 are qualitative representations of the integrals of the curves given in figure 3. Investigations of this problem are being continued. There are 3 fi,-xres and 2 referencesp 1 of which is Boviet. of Physics ASSOCIATION: Institut fiziki Akademii nauk UBBR (Institute/o-f the Academy of SciencesUkr SSR) PRL'6:,S*TBD: March 27, 1959, by I. V. Obreimor, Academician L-K Card 3A 66166 Some Specific Peatures of the Partial Adsorption of SOV/20-128-5-18/67 Residual Gas Components at Very High Vacuum 6UBMTTED: Maroh 16, 1959 IK Card 4A .1Y,,.: 0/109/62/007/004/01-s,1/016 Ch ~//Ip D290/D302 AUTITLOIRS Ptushins)Uy# Yu-G-j and Chuvk v As TITLE: Interaction of molecular beams of barium oxide with incandescent tungsten surfaces PEIRIODICILI: Radiotekhnika i elektroniKa, v. 7, no. 4, 1962, 687 - b92 TEXT: The Drocesses of thermal dissociation, chemical reac-.ion and: thermal' ionization were studied in order to elucidate the casic c1lianism of adsorption and the properties of tungsten cathodes coa- led with barium oxide. A mass-spectrometer was used. The decree 0-f dissociation varied with temperature; appreciable dissociation tool-C place above about 1700OK; dissociation :,,as practically-, omplet-e abo- ve abQut 22000K (the beam purrents were between 2 x 10,8 and 2 x x 101~~ molecules of BaO/=2~/sec.). There was no appreciable chemi- cal reaction if the tungsten surface was only partly covered w-- monomolecular layer of BaO; a vigorous reaction took piace -_'-f 'v',-.Ie surface has been previously covered with a t-hick layer of 3a0; ba- rium tungstate is formed. Barium ions were emitted from the tun6s- Card 1/2 S/109/62/007/0041/01 1/0'ItS Interaction of molecular beams of D29o/D302 ten surface at temperatures above about 17000K; no _11a0 ions '-,ere observed. The maximum in the curve of barium ion current a.-lains . temperature is probably caused by the oxygen that is produced as the BaO dissociates. Desorption of BaO from the tun:yslen k.ook Dlace in two stages, starting at about 111000K and 1".0001,; the two stages were nore distinct the greater the fraction of the sur- face that v-,,as initially covered with BaO. There -re 5 9 references: 5 Soviet-bloc and 4 non-Soviet-bloc. T'-ae 4 -zst cent references to the English-language publications -read as fcl- lows: DT... Inghrari, V1. Ghupka, R. 'Porter, J. Chem. 21hys., 1951,5, 2'~-;" 11, 2159; R. Bayard, D. Aipert, Rev. Scient. Instrun., lc--50, 21, 06, 571; R. HuGes, P. Coppola, H. Evans, J. Appl. Phys., IL)52, L-*3' 6, b35; P. Russel, A.Eisenstein, J. A'Ppl. Phys. 1954, 25, 8, 95:74- ASSOCIATION: Institut fiziki All USSR (Physics !nsti`L-.u-,,e -IS SUBIKITTED: May 15, 1961 Card 2/2 PTUSHINSKIY, Yu.G.;-CHUYKOV, B.A. Interaction of a molecular beam of BaO with the surface of heated W. Radiotekh. i elektron. 7 no.4:687-692 Ap '62. (MIRA 15:3) 1. Institut fisiki AN USSR. (Tungsten) (Barium oxide) PTUSHINSKIY, Yu.G. [Ptushyns1kyi, N.H.]; CHUYKOV., B.A. [Chuikov, B.O.] Peculiarities of the partial adsorption of residual gas components at very high vacuum. Part 2. Ukr.fiz.zhur. 7 no.1:79-81 Ja 162. (MIRA 15:11) 1. Institut fiziki AN 'UkrSSRJ, Kiyev. (Gasea-Absorpiion and absorption) (Vacuum technology) PTUSHINSKIY, YL,.G.; CIIUYKOV, B.A. Adsorption of hydrogen cn the surface of tungsten covered by oxygen. Kin. i kat. 5 no.3:5,13-519 i4j,-,Je 164. ~M:RJP 1,7:13) 1. Institut, fiziki AN 'Jkr-,'Sli. 2.4.'~3f& D299/D302 AUTHO.RS: Ptushynslkyy, Yu.11., and hJ_1-kn,,r- TITILE; Some -oeculiarities of partial adsorption of residual- -,as components in an ultrahigh vacuum. Ii P3RIODICAL: Ukrayinslkyy fizychnyy zhurnal, v. 7, no. 1, 19062, '19 - 81 M7~' :-XT: Niew results are given concerning the kinetics of adsorption of res-f-dual gases and 'V',,,e tenperature stability of residual ,;acos adsorbed on tuni-Istuen films. The present article is a coln"u-inu--tion of i,oroulis, Yu.G. Ptushinskiy and B.A. Chuykov (;,ef. 2: D!.S SSSR, 128, 930, 1958)- In R'cf. 2 (Op.cit.) the ~,-lov; meti-Iod was conL- bined (for the first time) vith riass-s-oectrometer investii~latio'ns; such a combined method yields more comprehensive results and is al- so used in the present investigation. The experimental app:T-attlus consisted of a mas,_--sDe c trome ter with glass lw2ip-an-alyzer suitable --or ultrahieh-vacuum investigations. The pressure of the resiLdual -10-8 m, 0 "Results: TI-e adsor-o-uion charac-ceri- gases was kept ai 2 "1 hg LI Card 1/3 S/18 0 2/007/001/012/014 Somie.T)ecuiiarities of partial ... D299Y_Io'02 stics of residual ras comDonents are expressed by the ratio ! /I (denoting the increase in -ion current during the r-low, and -the ion, current of the given component, respectively). A firure `L-1he deDendence of ~~,IL,/im on adsorption' time for 111 21 CH4 and CO + N21 at room temperature; the corresponding curves for lie zmd Ar coinei- ded with the abscissa. Froi,,i the figure it is evident tiiat 'U.,-.e resi- dual L--ases can be divided into three groups frorl the point of view of adsorbability: hydroEen, nitrogen and carbon T.ionc-X.ide are mostu aciively adsorbed; methane which is not readily adsoroed, and -Ghe inert c,-ases vilhich are prac-uic:~.Ily not adsorbed at all. 'Hence, in order io determine the influence of residual 6asels on the surfaces under consideration, it is necessary -co tuake into account t.,,-e -rate of adsorpzio-n of the various gas componenTs and not onlly their pres- sure. I Further, the effec-G of the "Gen-oerature of zHe tunt_,sten filin on the aOsor-otion of the residual-gas componerits, was lnvestiLr.:-ate-~, Ui'or a te~-woe~-ature ranL-.e of 3uO io 15000K). it was --found that 0~111, is completely vaporized from ihe tun3sten surface at T 0000K, 1,2 at T > 8000K, and CO + N 2 - at T ~_, 15000K. Thus, in order to clean Card 2/3 X S/1 8 5/6;~/007/00 1 /012/0 6ome pecuiiar-ities of partial . . . -D299/D302 cotiplezely the lu-n-sten surface from, residual gases -ander A-11ra- nir.h-vacuum condi cions, it has to be heated to tenipcrat-ares above 1~)OuOk. if the temnerature of the surface is 'K.eot at, 7000", it is possible to get rid of C11 4 and F121 and then to st-udy the adso2.--otinn of CO and X 2~ There are 2 figures and 3 references: 2 Soviet-bloc and I non- oviet-bloc. The reference to the Daglish-lan--ua-e pub- lication reads as --Pollows: D. Hagstrum, Rev. Scl. Instr., 2.1~, -1135 195-53; J. -docker, C. Hartmann, J. Phys. Chem., 57, 153, 11953. ASSOCLITION: Ins-uytut fizyky AN URSR (Institute of Physics of t-h-e AS UkrRSR), Kyyiv SUBI-11TT3D. July 22, 1961 Card 3/3 ,.CHUYKOY, Fedor Minayeyipk; ITANOV, G. I red.; POPOVA, T. , tekhn.re-1,; __TfV_~T.Vihfn_g for the individual] Too dlia oheloveks. Koskva Gos.izd-vo polit.lit-ry, 1959. 78 . (MIJIA 14:41 (Russia--Economic conditionS3 NAYDYSH, A.M., prof.; BRATISHKO, A.S., inzh.; ZEMLYANSKIY, L.V., inzh.; LEBEDEV, N.N., inzh.; CHUYKOV G.L., inzh. - 2 - ~'- Determining the optimum load on a panel for mines with it high methane liberation. izv. vys.uchev.zav.:gor.zhur. 7 no. 4s26-32 164. (MIRA 1717) 1. Donetskiy politakhnicheskiy institut, Rekomendovana kafedroy razrabotki mestorozhdeniy poleznykh iskopaysmy'Ah.