SCIENTIFIC ABSTRACT KRAVCHUK, G.L. - KRAVETS, V.V.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000826310007-4
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Sequence Number: 7
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

KRAVCHUX, G.L.
Su=er phenophases of the landforms in Lvov Province. Geog.sbor.
L'vov.otd.Geog.ob-va SSSR no,8tl35-139 164.
(MIRA 18: 5)

R,~ VC-H a t-., 1.
PROSKURYAKOV, V.; KRATCHUK, I.
Observations of telescopic meteors made at Kiev Astronomical
Observatory in 1940. Publ.lliev.aetron.obser. no-3:77-83 '50.
(Meteors ) (KI-RA 7:9)

KRAVCHUK, I.
We strive for high quality of production. Sill. bud. 12
no.1:14-15 Ja t62. (MIRA 16:12)
1. Predsedatell soveta Volodarskoy mezhkolkhoznoy stroitellnoy
organizats1i Kiyevskoy oblasti.

sov/86-58-lo-11/4o
AUTHOR: Kravchuk, I.A.,, Guards Maj, Military Navigator First
TITLE: Torpedo Bombers Attack Ships at Sea (Torpedonostsy
atakuyut korabli v more)
PERIODICAL: Vestnik vozdushnogo flota, 1958, Nr 10, pp 24-28
(USSR)
ABSTRACT: The author discusses methods of attack used by torpedo
bombers against ships maneuvering at sea. Three dia-
grams.
Card 1/1

XR,ATCf(UK,-Ivan Ivanovich, YOROKIIIN, Boris Grigorlyevich,; GRISHIN, Tu#A., red.;
.# w. M.I.Ored. izd-va,; TIKHOIIOVA .. Te.A., takchn. red.
[TeacbIng ship care to first class assman) Proirvodstvannoo
obucbenie matroeov 1 klanaa. MosIm. Izd-vo "Morskoi transport."
1958. 218 p. (Haval education) I! (MMA 11:11)

S/07 6/'60/034/012/0 14/027
B020/BO67
AUTHORS: Medvedeva, N. I., Neyman, M. B., Torbuyeva, Ye. S., and
Kravchuk, I. P.
TITLE: Kinetic Method of Using Labelled itcmiv ~n ti.,~~ 5tud;~ of
Complex Chemical and Biochemical Stvdj of thc,
Rates of Formation and Consumption Of Lthyl~Ilfi~ 1L it)(-
Cracking of Propane
PERIODICAL: Zhurnal fizicheskoy khimii, 1960, Vol. Nu.
pp. 2780-2768
TEXT: Fig. I shows the scheme of a vacuum dovice -fox propanLe cr;~ck:.ije,
which was made under static conditions in a quartz ri.action Tile
reaction vessel was inserted into a horizontal tubL fjruae~e. tumpexe--
ture of the furnace was controlled by a calibrated qhr=t;l--alvme1
thermocouple. Propane to which labelled ethylono C14h, hid f~otjn kjct,.! v I * atj
cracked and was synthetized from propylbromidu vitt o n orf-anlc
compound. It contained 0-5% ethane and 1% propyl(,n(.. Tho uLhylorio labvIii.-d
Card 1/4

Kinetic Method of Using Labelled Atoms in the 3/076 !60/03 4/01 e-'/-'1 4/0~7
Study of Complex Chemical and Biochemical
Processes.X. Study of the Rates of Formation an,"
Consumption of Ethylene in the Cracking of Propau
14 was produced fro-j.I ~aC 0'. 1~
with radioactive carbon C
column filled withHO~l (MSM-1) silica gel was UL-,eC4 to i-quiate tile
reaction products. Fig. 3 shows the characteristic ut~r~e-jat!(-ia of
the cracking products of propane: the time or the prooortiOnal ~LMount
of nitrogen which has passed through the column wE~re plotted along tll~,
axis of abscissas, the values read from the intprferometer wexu plotted
along the axis of ordinates. The maximum measuring, error wal 10-15~f, By
means of the method described the authors atudi"d the crackine of pro!j,,iiI(-
by adding labelled ethylene uQ to a 20-25% converl-,101, at 5~!O,
and 5100C. Fig. 4 shows the kinetic curves of thu d;~~com~u5itioll Of Proil;Ln',
with a content of 0-5% of ethane and 1% of labell~.,d ethilene at four
temperatures. The activation energy of the entire propar.- cra~:kinj:
increases from 65,500 cal/mole with a 3% converaion tv 721500 ral,, ,rzi o 1 n
with 17/o conversion. Fig. 6 shows the change of the !ipLcific activity of
ethylene (Curve 1) and ethane (Curve 2) with the d,-gr,~e of cracking for
four experimental series at different temperaturqi. Table- 1 6ivv!) data on
Card 2/4

Kinetic Method of lJoing Labelled Atoms in the 5/076/60/034/012/014/027
Study of Complex Chemical and Biochemical B0201BO67
Processes,X. Study of the Rates of Formation and
Consumption of Ethylene,in the Cracking of Propane
the activation balance at 580t 5541 532, and 5100C. Fig. 7 graphically
illustrates the experimental curves of the accumulation of ethylene (1)
and ethane (2) in the course of thermal decomposition of propane. Table 2
gives the rates of formation of ethane from ethylene In millimoles per
second which were calculated from the equation w -(I/a)(dIC -H6/dt) (2),
where w is.the rate of formation of ethane from ethylazie, a Ge specific
activity of ethylene, and I C2H6 the total activity of ethane'. The rate of
accumulation of ethane during the reaction was experimentally determined
and found to-be equal to the rate of formation of ethane from ethylene
which was calculated by the kinetic method (Table 5). Fig. 6 shows-the
rates of formation of ethylene w, calculated from four experimental earies
at different temperatures and without consideration of the ethylene con-
sumption during the reaction. Fig. 9 shows that the temperature course of
the initial rates of formation of ethylene leads to an activation energy
of this process of E :t62;500 cal/mole. Table 4 shows the concentrations
of n-probyl radicals 5 OOC. The equation
Card 3/4

Kinetic Method of Using Labelled Itoms in the sill , 14 / 1012/014/027
I 07t/) 60/ 0341 -'
Study of Complex Chemical and Biochemical 02o,!Bo67
Processes.X. Study of the Rates of Formation and
Consumption of Ethylene in the Cracking of Propane
w2 - w - fk0e-'/RT LC2H4J [H*j
was given for the consumption of ithyleno, whoro tho viduui of Ho nt
5800 with f - 0.01, ko.. 10-10 CM sec-1mole Boa-, azid E - 5'0W Cal/mole
are given in Table-5. A. V. Frost, A. D. Stepukhovich, acid S.Z. Roginskiy
are mentioned. There are 9 figures, 5 tables, and 15 references: 13 Soviet
and 2 US.
ASSOCIATION: Akademiya nauk SSSR, Institut khimichc-al~oy fizikl (Academy
of Sciences of the USSR, Institute of Chtimical Physics)
SUBMITTED: March'26, 1959
Card 4/4

ACCESSION NR: AT4020701 S/0000/63/000/000/0100/0106
AUTHOR: Bel'Sovskiy, 1. M.; Kravchuk, 1. P.; Nikol'skiy, V. G.; Yenlkolopyan,
N. S.
TITLE: Low-temperature radiation-induced polymerization of isobutylene
SOURCE: Karbotsepn rI-- ye vy*sokomolekulyarnrrye soyedineniya (Carbon-chain macro-
molecular compounds); sbornik statey. Moscow, lzd-vo AN SSSR, 1963, ioo-10
TOPIC TAGS: polymerization, ra~sation polymerization, isobutylene, low-temperature
polymerization
ABSTRACT: In order to clarify the degree to which'the reaction proceeds via an
ionic mechanism, the kinetics of the radiation polymerization of isobutylene over
a temperature range of -40 to -196C were investigated. With respect to low-
tem~erature radiation polymerization, the following conclusions could be drawn:
The independcnce of the polymerization yield of the Intensity of the dose Indi-
cates a linear relationship between the polymerization rate and the radiation in-
tensity. The polymerization of isobuty-iene in the liquid phase is accelerated by
a decrease in temperature down to the freezing pojnt of the monomer. The reaction
rate has an activation energy of 2.5 kcal/mol. In the solid phase, the reaction
rate has a normal temperature dependence with an apparent activation energy of
Card 1/2

ACCESSION NR: AT11020701
+1.88 kcal/mol. The maximum rate of polymerization is obtained in the initial
stage of irradiation and the process shows a tendency to become saturated as the
dose of radiation is increased. The molecular weight of the product has a maxi-
mum value during the initial stage of irradiation'after which it drops rapidly
to a value of 15,000-20,000; thereafter it is essentially independent of the dose.
Orig. art. has: 5 formulas and 5 figures.
ASSOCIATION: Institut khimicheskoy fiziki AN SSSR (Institute of Chemical Physics,
AN SSSR)
SUBMITTED; 26Apr62
SUB CODE: OC
DATE'ACQ: 20Mar64'
NO REF SOV; 005
ENCL: 00
OTHER: 005

89736
rill 00 U09 A60, 1275
S/020/61/136/003/024/027
B004/BO56
AUTHORS: Radich, L., Kravohuk, I. P., and Ifardaleyshvili, R. Ye.
TITLE: The Thermal Disintegration of Some Organic Compounds in the
Presence of Deuterium
PERIODICAL: Doklady Akadomii nauk SSSR, 1961, Vol. 136, No. 3,
pp. 657-659
TEXT: The authors study the problem as to whether the method of
determining the reaction constants by means of isotopic exchange, which
has been developed for photochemical reaotions,.is applicable also to
thermal processes. In the photolytic processes R + R IH---.),RH + h (1);
R + D2 --.,>RD + b (2) the activation energy of the reaction (2) may be
determined if the ratio RH/RD at various temperatures, and the activation
energy of the reaction (2) are known. In thermal reactions, the difficulty
consists in the fact that secondary processes occur, in which the same
products are able to form as in the reactions (1) and (2). It was the
Card 1/4

89736
The Thermal Disintegration of Some Organic 3/020/61/136/003/024/027
Compounds in the Presence of Deuterium B000056
purpose of the present paper to find out whether deuterium is applicable
for the purpose of determining the constants of thermal processes.
Besides, the assumption made by V. V. Voyevodskiy, G. K. Lavrovskaya, and
R. Ye. Mardaleyshvili was to be checked, according to which an isotopic
exchange between free radicals and D2 occurs, and with an excess of D2
the hydrogen atoms on 0 with non-saturated valence) are completely
substituted (Ref. 3). For this purpose, the separation of the hydrogen
atoms by methyl radicals was investigated in the presence of deuterium.
The methyl radicals were obtained by pyrolysis with acetaldehyd, acetone,
dimethylmercurium, and di-tert-butylperoxyd. The following experimental
conditions are given: duration of contact T 0.1 - 4 sec; total pressure
P = 0.6 - 5 mm, Hg, temperature 130 - 850OCt 10 - 15-fold excess Of D2-
Measurements of the ratio between the various deuteromethanes were made
by means of an NC-4(MS-4) mass spectrometer. For the pyrolyses of the
acetone, the results are represented in Fig. 1. The other substances
yielded similar results. At 500-6000C the degree of thermal decomposition
amounts, depending on the duration of contact, to 0-01 - 5%. The methane
contains only C113D and CH4. The ratio Cf'3D/CH4 does not depend on P and -t.
Card 2/4

OY736
The Thermal Disintegration of Some Organic 5/020/61/136/003/
Compounds in the Presence of Deuterium B0047BO56
Above 6000C an intensivation of the processes sets in (10 - 30% yield), an
polysubstituted methanes including CD4
occur as a result of.these
secondary processes. Experiments concerning the effect produced by S
/V
(ratio between surface and volume of the reaction vessel varied by checkinj
the vessel and the quartz tubes) showed that in the checker vessel
C
D/CH4 decreases with a falling P (44-mm Hg), but also does not depend
H3
on T. The conclusion is drawn that the measurement of the reaction rate byi
comparing the rate of (1) with (2) is not influenced by secondary
processes only up to 500 - 5500C- In Table 2 the activation energies El
calculated from CH3D/CH4 are given; CH 3COCH3 : 9.2t0.3; CH3CHO *. 7-:9!0-5;
(CH 3)3 Co 2 : 9.5t0.3; Hg(CH 3)2 : 9-9~0-5. These data agree with those of the!
photolysis (Refs. 4, 6-10) with the exception of the value of di-tert-
butyl-peroxyde. Here, the authors, assume that the value given-by q'. 0,
Pritchardf H. 0. Pritchard, and A. F. Trotman-Dickenson (Ref. 4) is too
high. The agreement between El in case of the photolysis and pyrolysis
permits the conclusion that in the photolysis no "hot" radicals are,
produced. Besides, the scheme assumed by Voyevodskiy et al. is disproved
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89?36
The Thermal Disintegration of Some Organic 3/020J61/136/003/q24/027
Compounds ir; the Presence of Deuterium B004/BO56
since polysubstituted methanes are 'produced by secondary reac~lon dnly
above 6000C. There are 2 figures, 2 tables, and 10 references-'
2 Soviet,
6 US, and 2 British.
ASSOCIATIbN: MoskoVekiy gosudarstvennyy universitet im. M. V. Lomonosova
.Noscow St4te University imeni M. V. Lomonasov)
PRESEBTED: July 14, 1960, by X. N. Semenov, Academician
% Fi .4
SUBMITTED: July 7, 1960
Card '4/4__.
03D
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-Alt
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InvCHUK, -I.S. - - ~ -Z, -
*_.. -
Repairing switch point pin fasteners. Put' i put.khoz.
no.6:15 Je 157. (KIRA 10:7)
(Railroads--Switches)

KRAVCIIUK , -1. S._._
A 11-teremok" style crossing watcher's booth. Put' i put.khoze 6 no.6:
l.3 162. (IMI 15:7)
1. Predsedatell soveta Vsesoyuznogo obBhchestva izobretateley i
ratsionalizatorav, at. Rossoshl, Yugo-Vostochnoy dorogi.
(Railroads-Buildings and structures)

DAVCHUX, I.S., inz)i.-mAhqn!k
Improve the innInteivince of" snow r(-move.-I equipment. put,
I
i put. khoz. 8 no.5-.41 My 164. (KRA l7s6)
1. St!ltlt3lya Rongostilt dorocyi.
t

KRAVCHUK L.A.
... .............
Curareform propertiee of derivativeo of cis-10-eyclobutanedicarbaxylic
and q-truxi.Ulo,acids. Fam.i toks. 23 no.1:46-50 Ja-F 160.
(MIRA 14;3)
1, Laboratoriya chastnoy farmakologii (z4,v, - deystvitElInyy chien
AWl SSSR prof. V.V.Zakuspv) Inatituta farmakologii i khimiterapii
AMN SSSR.
(MUSCLE WAXANTS) (CURAMIKE COMPOUNDS)

KIIAITLEVICIIP D.A.; KIIAVCIIUK, L.A.
Pharmacology of a now curariform drugg truxillonima. Farm. toks.
24 no-3:318-324 MY-Je t61. (MIAA 15-1)
1. Laboratoriya chantnoy farmakologii (zav. - deystvitella~7 chlen
AMN SSSR prof. V.V.Zakusov) Instituta farmkologii i khimioterapii
AM14 S5SR.
(MUSCLL ltELAXA14TS) (TRUILLIC ACID-PHYSIOLOGIGAL, EFFECT)

ARLIWARUK, A.P.; KHAVCHUX, L.A.; SKOLD11107, A.F.; YJ1ARKEV1CHJ, D.As
Chemical and pha:tmacological i-eijearch in the !!Grios of deri-
vativeo of cyclobutanedicarboxylic acids. Uch.zap. Imst.
farm. i khimioter. AM11 SSSR 3:138-157163. (MIRA 16:9)
1. DoWtmnt of Phamaeology (Ilead - F~,of. V *V.Zakusov,
Heraber of the U.S.S.R. Academy of Medical Sciences) and
Department of Organic Synthesis (Head - Candidate of Cheer)-
ical Sciences A.P.Skoldinov) of the Institute of Pharaaco-
logy and Chemotherapy of the U.S.S.R. Academy of 1-19dical
Sciences.
(GURARELIKE SUWTANGES)

KHARKMCHI D.A.*,_~~VCJIUK, L.A,
Some relations betueen the structure and the curarelike activity
in a series of bie-quaternary derivatives of cyclobutanedicar-
boxylic acids. Pam. I toks. 26 no*6t7O2-7C)7 11-D 163
(KIRA 1.8t2)
1. Laboratoriya chastnoy famakologil (zav. - deystv-1telInyy
chlen AMN SSSR prof. V.V. Zakusov) Instituta farinakologil i
khimloterapii AIAN S-QSR i kafedra fa=akologii ( zav. - deyntvitell-
nyy chlen AMN SSSR prof. V.V. Zakusov) I-go Mookovskogo oniana
Lenina meditainskogo inatituta imeni I.M. Sechenova.

i ACC NR: AP60917887
SO 'I'C!: C~d)V: i: -0390/66/029/004/01,20/0425
AUT11OR: Kravchuk, L. A
ORG: Laboratory of the Pharmacol )gy of t1j( !;%'.0 ;m%i ko-;Litute of Pharma-
cology and Chemoth(-rapy, ANI SSSF, Moscow
j 1. - J.aniiakologii nervnoy
siatemy Inutituta far-makologii J khimiotertpii XNN SSbll)
TITLE: Relationship b(tween structure and duration of curareform action of
truxillic acid diesters
SOURCE: Farmckkologiya i tokrl.kologiya, v. 29, no 4, 1966, 420-425
TOPIC TAGS: pharmacology, drug effect, truxillic acid, truxillic acid cater,
curareform effect cheml.cal structure, quatjrnary ammoniLati compound , /77C/04.06~V
ABSTRACT:
Card
Dur,'IL'1011 of the curareform action of bis-quaternary dialkylamine
entern of a, y, and c-truxillic acids was studied. Usually in
medical practice, the choice of a myorelaxant dependa on the duration
of its action. - Herently, exper1mvilts were made to inventigate
the relationship between the duration of curareform activity and the
chemical structure of bis-quaternary symmetrical dialkylaminoalkyl
eaters of truxillic acids havi6g the general formula:
1/4 UDC: 615.785.3-015.1

AP6027887
These effects were then compared with those produced by ditiline,
cl-tubocurarine and diplacine. Table 1 presents data on the duration
of the curareform effect of Lhe substances tested. The time required
for recovery of the righting reflex was used as an Index of the
duration of action of the myorelaxant, recovery being marked by the
stoppage of the myorelaxant effect. Fig. 1. shown graphically the
.,relation6hip between. duration of curarefoim action and types of
'chemical structures of the compounds in this series. The most important
factors influeucing the length of drug action are: 1) spatial .con-
figuration - rA-truxillic acitt derivatives (nos. 3, 7, 10)'have a
shorter effective period than their stereoisomers synthesized from
y-truxillic acid (nos. 4, 8, 11), w1iile the curareform action of
'e-truxillic acid derivativea (iios. 5, 9, 1.2) does not last as long
as that of a-truxillic acid derivaLives. 2) Distance between quater-,
~nary nitrogen aLomo. As rhown In Fig. 1, a-Lruxillic acid products
(nor.. 1, 2, 3, 6, 7, 10, 15, 16, 17) are. di~itinguiahed by long
.carbon aide chains and do not have uniforin lengths of curareform
activity. When the number of carboii atom3 in the side chain is in-
~crcaaed from 2 to 7, a progressive shorLening of the duration of
:curareform, activity of the compounds occurs. 3) Type of radical
on the quaternary nitrogen atom - a- and y-tcuxillic acid deriva-
tivea- with N-tnethyldiethyl groups. ..are effective lon~Fr.than-.--

ACC NR, AP6027887
analogotis compounds having N-r;i%!thyIpIpcri d Inc groups; while in
C-truxillic acid derivatives, conpounds with N-mechylpiperidine
radicals display a loi)ger ciirareform activity. The table shows
the relationship between the timo requi.red by mice to recover
the righting reflex arCa d~k- structure of the cor,-,pound. a-TruxilliL
.acid derivatives with seven carbon atoms in the side chain display
the briefest curareform effect (1 1/2-2 1/2 min). All a-truxillic
acid derivatives except nos. 15, 16, 17 acted faster than diplacine
and d-tubocuraritic. Derivativeg Of Y-Lruxillic suppressed the
righting reflex up to 27 min. The curareform effects of c-truxillic
.derivatives (lid not last as long as those of diciline and a-truxillic
acids. When 5 LD so doses of these compoundti were given intravenously
ito mice, there was a definite connection between the distance be-
tween the nitrogen atoms and the length of the latent period (time
;between administration of the drug and first appearance of its
effects). When n is 2 or 3, apnea and myorclaxation set in at once,
when n is 4 to 5 the latent period is 3-5 sec; and when n is 7,
period is 5-15 tier.. This relationship is revealed more clearly
'when these substances are administered in minimum therapeutic doses
to intact rabbiLS and decerebrated catG (see Table 1). When n is 2,
the latent period of a-truxillic acid derivatives is 3-12 times
:shorter than when n is 7. Teats showed that truxillic acid deriva-
Co'rd 3/4

1ACC NRs AP6027887
tivea produce anondepolarized interference with neuromuscular
~tranumission. [WA-50; CBE No. 11)
SUB CODE: 06/ SUBM MICE: lOJun65/ ORIG REF: 004/ OTH REF: 001/

KRAYCHUX. L,F., Inshener; OLISHANSKIT, Ya.A., inzhener; SUROV, V.S.. in2henet
Automatic food-water flow control for boilerB in power planta. Inergetik
5 no.2:14-16 7 '57. WaA 10:3)
(Feed-water regulation) (Automatic control)

USSR / Cultivated P2,ants. Cereal Crops. M-3
Abs Jour :Ref Zhur - Biologlya, No 13, 1958, No- 58559
Author :1(ravchuk, L. I.i Volitovalka, 0. B'*; Gudzl, G. A.;
-bub na) 1. A-1 Chakmmlova, L. N.
Inst Cherkaf3k. Pedagogical Institute
Title Prelimihary Data on Blah Yielding Ititervarioties of
Hybrids of Corn, Produced at the Agrobiological Station
of the Pedagogical TmAtitute
Orig Pub tVauk. Zap. Cherknalks dorth. pods in-t, 1957, 11, 301-311
Abstract :No abstract given
Card 1/1

STETSENKO, A.V.; KRAVETSv L.I.
Cyanine dyes from 2-methylacenaphtheno-41,51 i 4,5--thiazole.
Ukr. khim. zhur. 30 no.1:75-80 I(V*. (MMA 1716)
1. Kiyevskly gosudarstvenriyy universitet imeni Shevchenko.

USSR / HLunan and Animal Morphology, Normal and Pathologic. S-2
Nervous System. Peripheral Nervous System.
Abs Jour :Rof Zhur - Biol., No 18, 1958, No 83674
Author :Meshkov, N.V.; Romanov, S.S.; Kravchuk, L. M.
Inst :Lvov Zoovaterinary Institute
Title :Changes in the Urinary Bladder after Impairment of Its
Innervation.'
Orig Pub !Sb- naucl-m. tr. Llvovsk. zoovet. in-t, 1956, 8, 143-149.
Abstract :The spinal cord in rabbits was cut in area L3-L4, comple-
tely lesioned at level Th5-1b6, or impaired in the lumbar
area by puncture with a surgical needle. Most animals
shoved ulcers in the urinary bladder with blood clots In
the cavity or fibrin deposits on the surface of the peri-
toneum. There were sharply pronounced vascular lesions (en-
largement of capillariesp hemorrhages, hemontanlB and throm-
boaus); as a consequence, there appeared necrosis of the
mucosa, beginning in the epithelium and spreading to its own
layer up to the muscular sheath. Vascular lesions play an
important part in the mechanism of the development of ulcers
Card 1/1 in the bladder. -- N. T. Tsarapkin.
23

ontion of nxjliydi,m:j copper forminto. Muir. otruxt. RhIr. 6
no. 4-.~--45-61j7 JI-Ag 165 ~;-, ft ],-) I I.)
y
univeroitet lmeni V. 1.

YEROFEYEVJO B.V.; KRAVCHUK, L.S.
chromatcgraphic determination of hydrogen in binary
Mixtures of gases. Dokl. All BSSR 7 no,,4:247-250 Ap 163.
(MIRA 16:21)

KRAVCM, L. , and TRET'YACHM) 0. N.
"Determination Methods of Thermal Properties Determination
At High T,~mperatures."
Report submitted for the Conference on Heat and Mass Transfer,
Minsk, BSSR, June 1961.

KRAVCIM, L. V., and MET'YACROKO, G. N.
"The Methods of Approximate Calculation of Dangerous Temperature
Fields and Heat Stability Evaluation of Details Made of Fragile
Materials.
Report submitted for the Conference on Heat and Mass Transfer, Minsk,
BSSR, June 1961.

81137/61/000/012/056/149
A006/A101
AUTHORSt Tret'yaohenko., G.N., Kravchuk, L.V.
TIM? On a method of investigating the resistance of brittle materials
against thermal failure
PERIODICALi Referativnyy zhumal. Notallurgiya, no. 12, 1961, 43, abstract
12G304 ("Foroahk. metallurglya", 196-1, no. 2, 53-60, Engl. summar7)
TEXT: It in recommended to determine heat resistance of materials with
the aid of criteria, refleoting tfie physical properties of the specimens and the
affect of the.part shape' its dimensions and heating (or cooling) conditions.'
The authors analyze experimental methods of determining these criteria. Results
of experiments, made with cylindrical and annular specimens, have partially con-
firmed the theoretical hypotheses..
R. A.
(Abstraoter'n notet Complete translation]
Card 1/1

3/137/62/000/003/067/191
A006IA101
,'~WLHORS: Tretlyachenko, G. N., I(ravcIjqk, L, Mozharovskly, N. S.
TITIZ: On the problem of thermal fatigue of cemet materials
PIMIODICAL: Beferativnyy zhurnal, Metallurgiya, no. 2, Ic,)62, 42, abstract 3G2,03
("Poroshk. metallurgiya", 1961, no. 4, 94 - 97, English summary)
TE.XT; An inveotigation of tho thnrinal fatigue of SiC compositions has shown
that "Ito fatigue limit for there materials begins after several dozens or some-
time:; several hundreds of cycles. This behavior is connected with differences in
the coefficients of linear expansion and moduli of elasticity of C, Si, SiC. It
is noted that the nature of failure of cast and cermet materials is different:
the latter break down immediately, without cracking. Si nitride and Zr boride-
based materials are less thermoresistant than SiC.
R. Andriyovskiy
[Abstracter's rote: Complete translation]
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3/170/61/004/008/016/016
B125/B2UI
AUTHORS% Tretlyachenko, G. N., Kravchuk, L.-V.
TITLE: Regular thermal behavior of bodies of complicated
structure
PERIODICALt Inzhenerno-fizicheskiy zhurnal, v. 4, no.6, 1961, 132-137
TEXT: The authors conducted a great number of experiments and also per-
forned a theoretical analysis of the results yielded by fundamental studies
of G. 19. Kondratlyev and G. N. Dullnev, the founders of the theory of the
regular thermal behavior of bodies (which studies, in the authors' opinion,
contain important errors). The following was established: G.M.Kondratlyev
studied the rules governing regular operation for any system of bodies or
for an arbitrarily complicated body. In doing so, he proceeded from the
following principal theorem: The general integral of Fourier equations
for the problem of cooling a homopneous and isotropic body havir~g any
shape (also any complicated shape) is expressed by an infinite series,
whose terms are rapidly decreasing functions of time;
Card 1/4

S/17 61/004/008/016/016
Regular thermal behavior of ... B125YB201
t - A0U0e-m0T + A1U e- M~ -4 .- (1)
Here, the positive numbers m 0 ml,... form the sequence 0