SCIENTIFIC ABSTRACT PRANTL, F. - PRASHCHIKINA, A.S.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001342830004-6
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: March 14, 2001
• Sequence Number: 4
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

v
-raphy iectcn~c~ 0~
jSj~,-, rrai-~a, Cz~--
-0: List of -,-ast Ew,opean ccessioriz, (T!21* V~Jll -
1955, Uncl.

PRANTL, F.
"Science, the lawmaker of hwaan society." (p.14*1). HISE IFIL-2D. (Cesko.-jlovenska
spoleenost astronomicka) Praha. Vol. 34, No. 7, Sept. 1Y53.
SO: East European Accessions List, Vol. 3, No. 8, Aug 1954.

.., PRANTL, F.
"Some Devonian amphipori&i and corals from Hranice and Becvou in Moravia,11
p. 290 (Casopis Pro Hineralogii A Geologh. Vol. 2, no,-, 3, 1957, Czchoslovakia)
Monthly Index of Fast European Accessions (EEAX) LC. Vol. 7. No# 29
February 1958
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-- PRANTL, F.
75th anniversary of Joachim Barrande's death. P. 113.
CASOPIS; ODDIL PPJRODOVEDNY. Praha, Czechoslovakia. Vol. 127, no. 2, 1958.
Monthly list of East European Accessions (EEAI) LC, Vol. 9. no. 1, January 1960.
Uncl.

P,WTL, F.
Systematic position of the genus Ifercy-nella Kayse. P. 159.
CASOPIS; ODDIL PRIRODOVE-jNY. Praha, Czechoslovakia. Vol. 127, no. 2, 1958.
Monthly list of East European Accessions (EEAI) LC, Vol. 9, no. 1, January 1960.
Uncl.

', ..' r.
t
w I -.-_
"Notes on micronaliontologic mct%ocls."
P.380 (Vestnik, Vol. 32, rio. 6, 1957, Prairial, Czecliosiovakia)
1-Tont'aly -,ndex of '-astu E--iro~eazl AccessionS (5 J~T) LC)
=E - Vol. 7, 'jo. b, Li,-Tust -19558

L
'-!-'ven ,"ames
Countny:
Acaderac Degrees: /not ,,,-iven/
-I:.-)artment o--:' llalc)orituoloL~y, Ueological Institute,
Af filiation -. 1--.- -1
ve,,E-slm ai:ade;.:ie ved; Cl,~,eclioslovak Acaderny of ociences/ e a I o
u-,---'U--,,v CSAX, sektor paleolitolo,,~ie), Prague
Source: -'IrLvue, Ve--tnik Us-Grednilio Ustavu Goolo,,-,ickeho, Vo-l '~:.Hlvl, .,.Io T
pp
Data: -ew T'ei.taculites veaera of tiie Devonian of
-edrich
C ~ii ~ -ila- -n-l a-

PRANTL, Ferdinand
International Meeting of German Paleontological Societies in
IVestnik CSAV 68 no.5:677-680 159.
1. Glen korespondent Ceskoslovenske akademie ved.

PRANTL, J,
Smoothening blast apparatus HIF 4430. Stroj vyr 9 no.7:358-359 161,
1. Kovo-Finis., n.p.,Praha.
A
-1
.

ACC NRt AF60:)4934 (A SOURCE CODE: UR/0236/66/ooo/ooi/0161/oj66
1AUTHOR: Pr tskyavichyus, G. A.-Franckovicius, G.; Yurenas. V. L.-Jurenas, V.;
., _an
jDauknis, . I.-Dauknys,-V.,~ Yodis, A. P.-Juodis, A.; Mayauskas, 1. S.-.'Majauskas, J.
IORGz Institute of Power and Electrical Engineering, Academy of Sciences Lithuanian
SSR (Institut energetiki i alektrotekliniki, Akademii nauk Litavskoy SSR)
TITLE: Heat resistance of refractory materials. 1. High temperature apparatus for
investigation of heat resistance
SOURCEs AIN MtSSR. Ser B. Fiz-matem khim geol i tokhn n. no. 1, 1966, 161-166
TOPIC TAGS: heat resistant material, metallurgic testing machine, aluminum oxide,
zirconium compound
ABSTRACT: The article describes an original piece of apparatus for investigating the
heat resistance of refractory materials with a temperature drop from 2500 to 300OK-
The apparatus has two heating elements: the upper high temperature element is made of
sheet tungsten, and the lower low temperature element of shoot molybdenum. The heating
temperature of the samples in the zone of the upper element can be regulated in the
Or
intorval from 600 to 2500 0, and in the zone of the lower element from 400 to 1800
By replacing the molybdenum heater by a coil, cooled by countercurrent water, a
temperature near 3000K can be reached in the lower zone. Cyclic change in temperature
Ci3rd 1/2

ACC Mt Ap6o34934
is achieved by displacing the sample from the high temperature zone to the low
temperature zone and back with the aid of an electromagnetic device. Zie test mediu=
can be either a vacuum or an inert gas (argon or helium). Zie total powsr requirement
of the apparatus is 10 kilowatts. Investigations of the heat resistance of samples of
own
refractory materials based on refractory oxides of aluminum and zirconium have sh
that the apparatus iB sixitable for both long and short term cyclio tests. Orig. art.
hast 4 figures.
SUB CODEj 11/ SUBYA DATS&' 08Dec65/ ORIG Mg~i 002
Cori .2/2

N T` ~ 0
PA - 246
AUTHOR GNUCHEV S.M., PRANTSOV V.P., MOREHKO G.F., KOMISSARO-V G.K.,
KLOCHKOVA Z.F.
TITLE Melting of Structural Steel in the El~ctria Furnaces with the
Use of Oxygen Lance. (Vyplavka konstruktsionno stali v
elektropechakh s produvkoy kislorodom. Russians
PERIODICAL Stall 1957 Vol 17, Nr 3, pp 228 - 232 (U.S.S.R.)
Received: ;/1957 Reviewed: 5/1957
ABSTRACT The investigation of the technology of the production of
structural steel by means of the addition of greater quantities
of calcium during the melting and on the occasion of the use
of gaseous oxygen during the oxidation period in place of iron
ore showed the following results: the phosphorus content in the
metal after complete smelting of the burden amounted to
0,015 - 0,025 % in the.o"e a:! experimental smeltings instead
of 0,050 - 0,060 % in the case of the usual smelting. The
oxygen content in the metal before the removal of the oxidation
slag at 0,055 - 0,22 % C amounted toO,0490 - 0,0190 %. The
MgO content in the slag at the end of the oxidation period
varied between 9,90 and 15,51 %, which does not point in the
direction of an increased destruction of the bottom during
the blowing. The oxygen content in the metal of the experimental
CARD 1/2

PA - 2416
Melting of Structuxal Steel in the Electric Furnaces with the
Use of Oxygen Land6-.
ASSOCIATION:
PRESENTED 13Y:
SUBMITTED:
AVAILABLE:
ameltings on the occasion of tapping amounted to 0,0032-0,0062%
and the hydrogen content to 3,9 - 7,0 cbcm/lOO g of the metal.
The chemical composition of the slag before tapping does not
depend on the kind of oxidation (ore or oxygen). The saving
of electric energy during the oxidation period on the occasion
of the experimental smeltings were on the average 30 kc/t of
usable ingots. Oxygen-consumption was 6-12 cm/t. The quality
of the finished metal in the case of oxygen blowing meets the
demants set up by the technological standards of the factory.
(With 5 tables, 3 illustrations and 6 citations from slav
publications.)
Central Scientific Research Institute for Iron Production
Library of Congress
CARD 2/2

DADYWIS, V.I. (Dauknys, V.]; PRANTSKYAVICHYUS, G.A, (Pranckovicius, G.1
Size factor in deterrdning reoistance to abrasive wear.
Liet ak darbai B no-4:221-227 161.
1. Institut energetiki i elektrotekhniki JUI Litovskoy
SSR.

PRAFIULIS,--M,F..
Chemical method of cleaning heat exchangers of oil and gas
refining units. Trudy VNIITD no.11:86-108 '59. (14-IRA 15:5)
(float exchangers)

-~_ _F -eyr-vich;-KUSHELEV, V.P., retsenzent; DZHORDZHI,
PFANULIS, Mikh4k
I Add
A.N., ved. red.; YAKOVIEVA, Z.I., tekhn. red.
[Safety measures in petroleum refineries]Tekhnika bezopasnosti
na neftezavodakh. Izd.2., perer. i dop. Moskva, Gostoptekh-
izdat, 1962. 208 p. (MIRA 16:2)
(Petroleum refineries--Safety measures)

PRANULIS,-~
Safety measures in using ti,u ~1-10-type semicontinuous coker.
Trudy VNIITB n0-10:55-64 ~53, (MIRA 15:5)
(Petrcleum refineries--Safety measures) (Petroleum coke)

PRANULIS., Mikhe'J1 Thdayevich; KUSKUXV, V.P., inzh., retsenzent; ROMANOVA,
U.V.9 vedushchijr red.; POLOSIZIA, A.S., tekha.red.
[Safety engineering in oil and gas plantsj Takhniica bezopasnosti
na neftianykh i gazovykh zavodakh. Moskva, Gos. nauchno-tekha,
izd-vo nef t. i gorno-toplivnoi lit-i7, 1955 - 217 P - (MIRA 11 -.~5)
(Oil induetries-Safety measures)

/,//.

SAMARCHYAN, R.S.; KUKHIIIA, V.N.; SUVTANOV, K.I.; PRANULIS, K.Y.
Torch lines and safety valves inoil and gas refineries. Azerb.
neft.khoz. 35 no-10:33-35 0 156. (MIRA 10-1)
(Petroleum--Refineriet)

PRANULIS, M.F.
Safety measures in dismantling and repairing submersible condenser
boxes in petroleum, refinerieu, Trudy VIN."ITE, no.13:90-96 160.
(MIJU 14:12)
(Condensers (Vapors and gases)-Yaintenance and repair)

BuLGARIA/Diseases of Farm Animals. General rroblems R
Abs jour: Ref Zhur-Biol., 110 9, 1958, 40598-
Author : Pranszhey, I., Shoshkov, P.
Inst :Higher Institute Pf Veterinary Medicine.
Title :The rroblem of the Curdling cf Milk frcm Fealthy
Cnws and Gnats.
Irig Pub: Nauchn. tr. Vissh. veterinarnrmed. in-t, 1956,
4, 279-285-
Abstract: Cases were observed when milk obtained from clini-
cally healthy cows and goats curdle& on boiling.
After the animals were treated with urotropin
which was administered internally three times daily
in doses of five grams for cows and nf one gram for
goats for a period of three days, the milk ceased
Card 1/2

BUY.&JUA/Diseases of Farm Animals - General Probler-nis
Abs Jour: Ref Zhur-Biol. 1
, No 9., 1958., 40598
to currile. Examination shnwed that there is more
fat and albluren cnntent and less casein in curdled
milk than in milk which did not curdle and which
has been obtained from the same animals after urn-
tropin treatment; also, in this case the relatinn-
ship between casein and albumen content is smaller.
Card 2/2 2

PRANULIS, M.F.-, FRIDMAN, Ye.Ye.
Efficient method of cleaning equipment of thermal cracl,2,-ng
units. Trudy VNIITB no.11.,109-115 '59. (MIRA 15-5)
(Cracking process)

77~AFC-- - y
D.
Use of radioactive Isotopes in the construction induntr/ and for
construction materials. P. 3. TEdNICA NOUA. (Asociatia StiAntifica a
'J.
Inginerilor si Celinicienilor) Bucuresti. Vol. 2, no. 25, Nov. 1955
So. East European Acces.-ions Lint Vol. 5, No. 9 September, 1956

PRA'i,,-TGE3CU )
. L -
A gener a I izatlirr, - f fA '% ~ r,-- . , - :%; n, -L -.,.;-
V. ~ -
~ i -1 ~ *
p 11- In t.i c f ILYI c t i o f 1 7, . u d"y . i ~ .It . .,~ *, ~ ,1 r., a r v m -. ,.--6 rc.): ~
1,174 164-

-FRAPORDZHESKUx N.[Praporgescu, N.]
On the probabilities changing in chain and connected in time. Rev
math pures 4 no.3:403-423 159. (KUI 10:9)
(Probabilities) (Statistical mechanics)
(Functional equations) (Time-series analysis)

PRAPORGESCU. N.
, Vz!
1-i.?
- _ -
Generalization of the 0 fum-tion and its use in elliptic function
study. Studii cere mat 14 no.3:423~4+51 363.

WO r
--TaPOr lgl~' Sur Unc clasic d'6qualTons int6gfaje.,, et
a la statistique.
Polytc-ch. B;icarcgt 10 (1938--39), 4B"11. Math 1111y.. r,,C.
1st) (19A0). _103 11, 140-
TL -RUthor comm,,- (,A,,
if,
equations of t~c
Odleaf(sy
or K may ,
'Ind cith(-r ~5
integral fAu [u(s) the p,,,bj,rO Of IninImizin p',
L'K W 0 (3 + 1),* 1 --d.,
U and 0 ijeing gi-- -- -- by -. buitable Choice
ven, 1"Or (B)# he finds that K M!Ist
Sathty a certain integral equation of t1le F.;,t
tcsUlts are statcj tn 11
ve to The
Man
Source'
Vol 10

n I C ;i4 .111 leer Ie
-N rg,~ is
.fl J-
.Y- -1), tiat i, pp
it) Runfallmn. it Ild ) lit 11 cl;Iss
viautit"'K Asiag alld

CZE-CHOSL~V-x"L, / GonQrnl Probluips of PritlioloPly. 14=011 U
Tumors.
.&Ibs Jour: Ruf Zhur-Biol., No 9, 1958, 42160.
,,uthor
Inst :Not given.
Title :The Lrrost of Growth of Recurring Carcinoma of
the Urinary Bledder following Unilateral Uretoro-
sigmoid ,nastomostis.
Orig Pub: Rorhl chirurg., 1957, 36, No 10, 666-669.
~~bstract: -*,- case of recurring carcinoma of the urinary
bladder is d(:-;scribed. Following establishment
of a left uretcro-siSmoid anastomosis, further
growth of the tumor was arrested.
Card 1/1
37

PRAPORTNIN, Joza
We selected new workers councils: young producers., ya=g manag6rso
PTT zbor 16 no.5-.143-1" MY 162.

11WIPPILOTINIKY Tc-_9
---,
,Iegraph., and '11'elepbmie
The eighth general meeting of the Post,, TA
I Alpine Society of LJubijana. PTT zbor 146 no.3:65-70 Mr 162.

LAUBENBERGER, H.,Dipl. Chem.; PRAPOTNIK, Joze, inz. [translator]
Plastic mass in ship building. Brodogradnja 13 no.2:55-62
'62.

PRAPROTNIK, Viljem, ing. (Ljubljana)
Power, energy, and economic problems In the use of complex water
streams. Vodoprivreda Jug 2 no.4/5:21-24 159. ( ETQU 9: 1. 0 )
(Yugoslavia--Water)

PRAPROTNIK, Viljem, ing. (Ljubljana)
Economical factor in water-power designs. Vodoprivreda Jug 2 no.4/5;
n2_116 59. (EW 9:10)
(Yugoslavia--Water)

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1014'wi .4r*, G.Bovoo, (Pal), D,v*P, Nadras) D.A.P.E.. (~ on)
I
P~; b. (Lonoon) Ir
Studies on the Coccidia of some Ophidian hosts, Actlk veter
Hung 13 no*.l.-8J--88 263.
1. Veterinary Collegap Patna Biharp India.

Ac~'-':'SSION NR; APLO16593 Y/0001/64/000/ooz/0,127/0335
AUTHOR: Radovanovic, Slobodan (Chief); Prasad, T. V. (Senior scientific
officer)
TITLE: Sintering of some natural magnesties at temperaturos between 1300 and
17000u-
SOURCE: Tehnika, no. 2, 1964, 327-335
TOPIC TAOS: lmy temperature magnestie sintering, silica refroLctory matrix,
sintering, sintering natural magnestie, natural magnesite, magnesite inpurity,
periclase
A13STRACT: Magnesite samples with different representative quantities of
impurities were taken from four localities in Yugoslavia and heated to tempera-
tures botween 1300 and 17000C, with intervals of 1000, to observe the effect
of the impurities upon sintering. Sample I had a high Fe2O3 and CaO content;
and Sample IV had:~a high SiO2 content. The finely ground samples were iixed
with a sugar solution and pressed Into cylinders which were kept for one hour
Card

ACCESSION MR: AP4016593
at the extreme temperature and then cooled in a~slightly shorter time. Physical
and mineralocical.examinations showed that sintqring was accompanied by an
increase in density, in the percentage of linear shrinkage, and in the dimen-
sions of the periclase crystals, by a decrease in the total active surface
and in the tot"al volume of pores, and by moro complete formation of the silica
refractory matrix,and more uniform silica distribution through the periclase
cz- d
ystals. The oxi es, Fe 0 speeded up sintering. CaO
2.03, sj-02' and A12 3'
inhibited sintering and decreased the positive effect of good mineralizers. The
small amount of impurities serving as mineralizers in very pure magnesite (Sample
TI) was insufficient for sintering such magnesite at low temperatures. Depend-
inE on the molar ratio of CaO/SiO during sintering, magnesium, calcium-magnesium!,
and pure calcium silicates were Fo~med to make a refractory matrix between the
periclase crystals. Sample IV, which was highest in Sio~, and lowest in CaO,
and whose matric substance was largely highly refractory forsterite, proved
the most suitable:of the four samples for sintering. Orig. art. has: 5 tables,
6 figures, and 7 microphotographs.
ASSOCIATION: Mineralosko odeljenjo Instituta za vatrostalne matorijalo,
Kraljevo (Minaralogical Departaont ot tho L-.atiWto fc--4 Rofraotory ';ateriuls);
Card 2/3

A&ESSIOU UR: U4016593
odeljenje za vatrostalne materijale Nacionalne motalursko laboratorije,
Jamshedpur) India (Department for Rafractory'Materiali of tho Rationsl'
Metallurgical Laboratory)
SUMITTMx 15.kpr63 DATE ACQz 14Feb64 ENCLz 00
SUB CODE: Mk, ML NO REF SOVt 001 OMR: 004
Card 3/3

OPIENSKA-BLAUTH, Janina;.PRASAL,__~~ipiew
Comparative studies on the determination of amino nitrogen in body
fluids. Ann.Univ.Lublin; sec. D 14:117-126 159.
1. Z Katedry Chemli Fizjologicznej Wydzialu Lekarskiego Akademii
Medycznej w Lublinie Kierownik: prof. dr. Janina Opienska-Blauth.
(AMINO ACIDS urine)

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60000

,,PRASEr, Jnroslav (31rat is Inva. U1. r--;. armady 17.
Embryostatic effect of nitrogen deri-mtives of carlbon diorida.
Neaplzsna, Bratisl. 5 no.1:53-61 1958.
1. Onkolo,-,iches Forschnngsinstitut, Bratislava
(CARBON DIMIM, rel. cpds.
nitrogen deriv., embryostatic eff. in fish (Ger))
(:UIBRYO, eff. of drugs on
nitrogen deriv. of carbon dioxide, embryostatic eff. in
f ish (Ger))

4w-
40 fir -
- - - - - -
ft 1) 1) 14 1? 4 1.
AD 1 .4 24 p
tt

A atudy at ptralumhutes of ithiall and alkAlfte earth owlsis. NF i4ka 64tic
lion ciahoslar. C". Cpmm 2. r4l-441 1 fjcv?)~ --- Ify the addit of ?WvT#rq-W4ft-f* low
Alousinate. the following conspl- wrrr A,tAinM; K,()20AI,(N
M1.11. atid %hr cormstionding M& comI.N. fly osi,,ing of .4n of fill, Qfth chl'wi&
-fOg 11.44 ith alkalt ahunimte. Ilmir wcrr t,l,(,[ 1.1,412(1 Ifil,( mul I i,o .00)

IS W '.14) 4AI.4 It Wlift). mW 1hr ('a. st

'
44 W'.h I Ali& w, 1511.4 1.
*.-).I It. fly shaliblif the lA't oisoled with vio-rav of Imbobolp, U
3~40 '21O.M.Off 210H.O. 30*0 20 A1.0,20iffit) ifferv ofifaloed I'llf- J~fillollihkAlr* life

twit I~e th it I t0% %%fill '111 A'O..
at ofifinary
t
which Ate all lottim tho., 2K f
comixf.
,
It
,

;4A

,0411 3

it

PRA'JEF , K., , Fl! MA. ,;,, , KR I X, V,
p 1-23.Lbd I! tl-~- s of ~ *-,~, i- -~ r -- "', ~ .. - - - -
ga2 plantr3. Fa" 4 va !,r no,. -, -, ---- -38 F '6:
1- 4 ~, - .
., Research 'Inst-itut/" cf Fuel~, Fk~chovite.
I

K L, I MA , J. ; PRASEA , K.
Intens if ica tion of the opera -, -; on of com.D:'e s s'- -on , :,---a
44 no. 41/6:142-14.4 '-Iy-Je 164.
Experiences in operating heavy duty compression generators and
possibilities of Increasing the efficiency of compression gasi-
fication. Paliva 44 no.5/6sl45-147 MY-Je 164.
1. Research Institute of Fuels, Bechovice.

PRASEKI K.1, inz.y C.Sc.
Examination of solid drying agents. Paliva 42 no.3:73-82
nr 162.
1. Ustav pro vyzkum paliv., Bechovice.

PWEK, K.; KLIMA, J.; NEDORA, W.
New possibility of gas production by using nuclear energy. Paliva
42 no.6:165-167 Je '62.

PRASEK,
I I KLIMA., J.; NEDOMA, W.
Technical and economic examination of lighting gas production
by gasification in generators with removal of fluid slag. Paliva
42 no.9:257-261 S 162.

N! DOMI , '--1 .,, PFISEK, K.; KLMA, J.
Pre5auzn ga5ification of fuel wituh liquid eLag -,-~
no.7:2JJ+--222 JI 163.

PJIU,,~',~-`K5 K.1, NEDONUI, ',:~
I
Prot-ction of the internall surface of -7as pipelines by plastlc
coatings. Pal--'vr- 41 no.7:235-236 Jl 161.

n:~ 71 Lr ~~,a

PRASEK, K.
?x-9mination of solid desiccants. Prace vyzkum paliv 4:3-44
,62.

M-IMA, J.; PRASEK, K.; MO!'Vi, W.
3tudy of rUp'motion of a gasifying agent and cinder An a model
of pressure generator, Paliva 42 no.1:3-11 Ja 162.
1. Ustav pro vyzkum paliv, Bechovice.

L vi, , ,6 .
PRASEK, K.; Ei,il- -
z-sic -esearch an s-I-Istance r.~wementls in pressi-1-c- :7snera-~s:-
models. Prace Ust oaliv 8:5-38 '0'4.

I ,
AUTHOR: Prasek, Ladislav, M~-. Mat.
0
TITLE: ema ti calDetermination of
Ingots and Forgings (Matemati-,kd
pnuti v ingotech a v-,6kovelch)
PERIODICAL: Hutnick4 Listy, 1959, Nr 6,
CZECH/34-59-6-6/23
the Internal Stresses in
/ .1
urcenif vnitrnich
pp 489-493 (Czechoslovakia)
ABSTRACT: The author deals with determining the distribution of
temperatures and internal stresses in large ingots
caused by non-uniform cooling. To simplify
calculations the ingot is substituted by an infinitely
long cylinder of a constant radius and it is assumed
that its surface is cooled at a constant speed h. It
is further assumed that -the constants of the material
and the thermal parameters do not depend on the
temperature and on time. States occurring in the
steel after exceeding the yield point are not dealt
with. The results in the given case are entered in
diagrams using dimensionless parameters. The same
calculating procedure can also be applied to forgings
for the heating as well as for the cooling process.
The heating speed is +h during heating and -h during
Card 1/3 cooling. During the further phases of the calculations

CZECH/34-59-6-6/23
Mathematical Determination of the Internal Stresses in In6o-.3 and
Forgings
the ingot, or respectively the forging, is substituted
by a finite circular cylinder or a body corresponding in
profile to the real product. The cooling speed h will
be a function of time, the thermal parameters and the
constants of the material are assumed variable with
the temperature. Particular attention is paid to
analysing the stress state which is almost always elastic-
plastic. Such cases are calculated by means of the
difference method using a computer. The theoretical
results will be verified experimentally and the
accuracy of the solutions discussed. Only Type I
internal stresses are dealt with,, which are present
throughout the body of the component. Type II stresses,
existing within the limits of a few grain sizes, and
Type III stresses, existing within the range of a few
atomic spacings near faults in the lattice structure, are
not dealt with. This article should be considered as an
introduction to the problem , which is extremely
Card 2/3 complicated and requires the cooperation of several

CZECH/34-59-6-6/23
Mathematical Determination of the Internal Stresses in Ingots and
Forgings
ASSOCIATION:
SUBMITTED:
Card 3/3
branches of science. As an example the internal
stresses are calculated in an octaEonal Ni-V steel ingot
weighing 48 tons, 270 cm long, 150 cm dia. at the bottom
and 170 cm dia. at the top, with the following chemical
composition: 0.4y/o C, O.l-jV/0 V, 0.5001o Mn, 0.25% Si,
0.20016 Cr. 2.201o Ni. The case is considered of removal
of t~e ingot from the ingot mouldoand cooling it fr
0 8m
1450 C with a cooling speed of 50 C per hour to 700 C.
The ingot is substituted by an infinitely long cylinder
of 150 cm. dia., as the thermal and material constants
those are taken which correspond to a material of
sim,~lar chemical composition at a temperature of about
800 C.
There are 4 figures and 8 references, 2 of which are
Czed~ 1 Soviet, 3 English and 2 German.
V�zkumnj
(Research
Pilsen)
March 16,
a zkus'ebn3*' u'stav Zavodu V. I. Lenina, Plzen"
and Test Institute of the V. I. Lenin Works,
1959
V/

PRASEK, L.
"Mathematical determinati )n of inttxnal s lxe.~i-es in in,i,ot.s ,in(! i'orgings."
HUTNICKE LTSTY, Brno, Czechoslovakia, Vol. 11L, Nlo. 6-, June 1959.
4onthly List of East European Accessions I.C, Vol. 8. No. 9, Lepfember 1959.
inclassifie,4.

PRASEK, Iadislav,_Mg. mat*
Calculation of temperature distribution and of internal stres3 in
ingots during cooling. Part 2. Hut listy 16 no.9:630-637 S 161.
1. Zavody V.I. Ienina., Plzen

FRISEK, Ladisla I - mat.
. ~vl` - -
Distribution of ten: eratures and residual internal stre3ses
during the cooling of cylindrical bodies. Aplikace mat 8 no.5):
367-384 163.
1. Vyzkumny a zkusebni ustav V.I. Lanina, n.p., Plzen.

FRASEKX L.1 Mg. Mat.; KRATGCHVIL, P., i)romovany matematik
Calculating noLtural frequenecies of turbine bla6e flex-aral vibrataisr--
on digita-l computers. Strojirenstv-i 13 no.' '/ 'T, : -,
t -490-4C70 010
1. Vyzkumny a - ~~sehni ustav, Leninavy zavody:, Plzen.

HASEK, L.,, 1.1g. mat.
Calculation of the stress distribution in rotating disks of steam
and gas turbines. Strojirenstvi 14 no.9:643-652 S 164
I.. Research and Testing Institute of the Zavody V.I. Lenina
National Enterprisep Plzen.

L 1 Dri T /E-"~-;T
L_L52?-~-65 dIF A SD (a)-5/A'53D (f -;~2/:
AXEMON NRs AP4045057 AFkC(b)/'FSD(dp) FIN 74/0032161+,/0141009/0643/0652
(Master of mathe ties)
AUTHOR: Prasekt Ma
TITLE: CalcUation of stress distribution in the rotating wheels of steam and
combustion turbines
I SOURCE: Stmjireristvi- -v. 14, no-. 9,, 1964j, 643-652
-TAGS: stress calcula
TOPIC ~t*oni~ratating wheel, stress distributioncalculations
steam turbizej, comBuatfon ur5lne, physical parameter, material parameter,
geometric paramster,, Gra=el methodp Hampl method, automatic computer
ABSTRACT: T he calculation of the distribution of radial and tangential stresses
in the,rotating wheels of steam-and combustion turbines,is investigated. with
the aid of the differential method expressions are derived which give the stress
distribution in rotating wheels in relation to changing radius. The physical and
material parameters are considered as varying with the radius. The stress dis-
tribution is solved in relation to changing wheel radius, since the axial dimen-
aions of wheels are small in relation to the radius and it vould have complicated
1 the calculations to take into account the three-dimensional stress statep and
ic
ard

L 15224-65
AGGMION:NRI;. AP4045057
further, the physical and geometrical parameters are:distributed symmetrically
with respect to the wheel axis. Several sample cases ware chosen and calculated
and the results compared with the Grammal method and the method of Professor
Himplp in particular for the cases of thermal stresses# stresses from centrlfugal.~
force.ep and frod the pressure of the wheel on the shaft at rest. The same aasump-
tions and given constants were used in all the methods compared. All three meth-
ads used give similar results with a maximua error of 4% in the region where the
blade blends into the hub where various modifications of the methods were used.
The calculations by both methods mentioned lasted 2 to 3 days and were programmed
for an electronic computer. The setup program. and the possibility of maWng the
calculations on an electronic computer out cakWatlon time from 16-24 hours to
/+-S min in one case. The computer method is also advantageous in that it is Poe-
sible to divide the profile into 20 parts equidistant from each other (instead of
10 parts).. considerably increasing accuracy. The errors noted in the other
methods of calculation are practically eliminated. It is possible to calculate
several variants and choose the best, which was wt possible before because of the
time element; it is also poooible to analyze Ole offset of cartain physical con-
stants. Engineering safety,, howeivert has not yet been programmed for calculation.
Orig. art.. has,, 7 figurest I tablet and n foraulas
Card C
mom

ACC NR:
..%.UTHOR: Prasek, Ladislav (Graduate inathcrna'.:cian)
__qeqearch and the V. 1, Lenin Worl's Wyz"urnny
ORG:
a zhuselDni ustav, Zavody V.I. L. ), *Plzen
TITLE: Calculating critical speed of a turbine on URAL I compater
SOURCE: Celostatna konferencie o problemoch dynamiky strojov. 2d, Smolenice,
1961. Dynamika strojov (Dynamics of machines); sbornik prac z konferencie SAV.
Bratislava, Vyd-vo SAV, 1963, 388-401
TOPIC TAGS: mathematic analysis, turbine rotor, vibration analysis,
computer application
ABSTRACT: A method is described for calculating the critical speed of a system
of rotors (of a turbo-set) on the URAL I compoter. The calculation is hased or.
Prohl's difference method which has been modified for computer application.
method is applicable for a system of a maximum of 10 shafts represented as
fields, each field divided into a maximum of twenty sections. The given dynamic
problem is defined by a differential equation with four boundary conditions. The
Card 1/2

L 47550-66
4CC-NR:- --AT6029438
r ~ ,, idity of bearings is considered as a function of 'the revolution Oil' the sh'aft,
expressed in the form of a third degree polynomial. A program is compiled for
the floating point system, using an external magnetic memory. It was later
established that the same calculation could have been done five times faster,
i. e. , in about three hours, by using the fixed point system, and in about one
hour by using the URAL 11 computer. An example illustrating the theory is
presented. Orig. art. has: 4 figures, and 1.2 formulas. [KPI
SUB CODE: 20/ SUBM DATE: none/
2/2 V"
Card

L 36840-66 EW(k) /T-2/T,P (w) /FT,.T- (f
Ijp(o
AP6ol7O4O -, "17 1"
ACC NR b 0 L41 71
1/0~57700'(i;~
SOURCE CODE: CZ/ 670007CO
dislav--,~" o~ malhemnat'cs);
g~?asek, La rashek, LadJslav (Flaster
I (zng-incer)
Cendelin, iiri--Tsendelin, Yirzh
ORG: Research and Testing Institute, ZVI p., Plzen (Vyzkumny a
zkusebni ustav ZVIL, n.p.
TITLE: Calculation of the tem
'- Rgrature distribution in the turbine
disk and the turbine blade of an internal combustion_engine
SOURCE: Strojnicky casopis.* no.1, 1966, 57-74
TOPIC TAGS: turbine blade, turbine disk, internal combustion engine,
heat conductivity, temperature distribution
ABSTRACT: Two methods of calculation are described for determining
the temperature distribution in the turbine disk and blade of an internal
combustion engine. In the first case, the solution of corresponding
differential equations Is carried out for the heat conduction by a
differential method and the variation in the parameters of the material'!
in the radial direction is taken in consideration. A one-dimentional
heat flow is proposed in the tu~.~blne disk and blade. Gas flows
L
around the turbine blade while the latter Is cooled by air at a

L 368hO-66
FACC ~R:
0'
constant temperature. In the second case, the Laplace's equation
with the third boundary condition is solved by the relaxation method.
Both methods are programmed for the National Elliot 803 cor,puter. in
an example, the calculation of a two-stage compressor turbine is given.~
The control measurement was carried out on a net-type analorr circuit.
paper was presented by 1. Plander, Engineer, Candidate of Sciences,
Orig. art. has: 6 figures, 26 formulas, and 3 tables. (Based on
author's abstract] [NT1
SUB CODE' 13,20/ SUBM DATE: 1OFeb65/ ORIQ REF: 001/ OTH REF:

LACICIA, Zdenek, MI)Dr.; ZIDOVA, Vlasta. MUDr.; FISIROVA, Eva;
PRASEK, Ladislav, MgKat.
1WRI'Ma"
Normal levels of cerebrospinal proteins in alectrophoretic
picture. Ceek. neur. 19 no.4:256-265 Nov 56.
1. Yourologicka klinika v Plza'i. prednosta prof. Dr. V. Pith&
Interni Oddelent OUNZ v PlznI, prednosta prim. Dr. 0. Zwetechke.
(PROTMINS, in cerebrospinal fluid,
electropboretic standards (Cz))

of' he "L-2-1 1-Da(,er. D.300-
Economic evajuaL~on of oppratlonzal tests vItY prototype t
RUDY. Vol. 4, no. 10, Oct. 1956
Praha, Gzechoslovukia
SOUTIGE: EasL European List (2EAL) Librar~v of
Congress, Vol. 6., No. 1, January 1957

PRASEK, Z.; FRANK, J.
PPASEK, Z.; FRANK, J. Technological and economic evaluation of the Manda-UM boring
machine. P. 75
Vol. h, no. 3, Mar. 1956
RUDY
TECHNOLOGY
Praha, Czechoslovakia
So: East European Accession,, Vol. 6, No. 2j, 1957

TEVSTRATOV, V.; FRASHGHIKIff, V., inzh.; STRONGIN, M., inzh.
Scientific Research Institute of the Tire Industry. Avt.transp. 37
no-1:56-57 Ja '59- (MM 12:2)
1. Ispolnvayushchiy obyazannosti direktora Nauchno- issledovat ell skogo
instituta ahinnoy promyshlonnosti.
(Tires, Rubber-Research)
V,

ABOLIKA, I.; PRASHCHIKIN, V.
The R and HS new-design tires. Av-t.transp. 40 no.1-1:38-41
N 162. OURA 15:12)
1. Nauqhno-issledavatellskiy institut shinnoy
prciphlennosti. (Tires, Rubber)

FRASHCHIKIN. V. -
Tires with a removable protector. Avt. transp. 38 no. 12:50-51
D 160. (MIRA 13:12)
(Automobiles--Tires)

PFASHCEIKIN, V.,!.
Ez f ff e c, t c, h r- b r e ar5 c- r a a c
o f t y p e t r i i c a r e z, ri o9
1. Nauchno-Lssladoirifel'skiy institut shinnoy promyshlennoot'

PRASHCHTKRI I V.N.
Analyzing the radial deformation of type "R" and "RE" tr-,:ck
tires. Kauch. i rez. 23 no. 3:9-2-2 Mr 164. (14, MA 1-71 -5)
1. Nauchno-issledOVaLellskiy institut shirutoy

- Yi STR t..TO V " T. PRASH0911CM. V.N.
.1 r
1*
Tir-,n, (~r r~jw Zh-~". 110 1.,;:
- . 0.
,M.-
-.1 LRA

BUKHINp B.L.;_TRASHCHIKINq_Y,N.
Tires with removable tread. Avt-*prom. no.2:41+ F 161. (MIRA -14:3)
1. Nauchno-issledovatellskiy inatitut shinnoy promyshlennaotI4
(Automobiles-Tires)

S/l38/61/uu6/oO2/UO5/UO6
A05l/Al29
A 1jT'r 10 ILS Grinberg A. Ye.; Tsvetkov, A.I.; Yal'tseva, Ye.-'.; 'lakeye-ia,
Peschanskaya R. Ya.; Prashchikina, N.P.; Prashchikina, A.S.; Kr-jru-
kova, A.F .
TITTLE: Furfurhydramide and its v-ulcan-4--ation activity
PERIODMAL: Kaiichuk i rezina, no. 2, 1961, 25 - 29
TEXT: The Soviet rubber industrN, uses diphenylguanidiric as a nitrogen-con-
taining accelerator with a basic nature. Its production is based on toxic and
inflammable materials (aniline, carbon sulfide, lead silicarels and isopropyl al-
cohol). An attempt was m;.ide to find a cbeaper rdtropen-containinv orranic
Furfurhydramide w-): tested in combination with dulfur accele-rators as an acceler-
ator of vulcanization. A method for prodiicing the furfurhydrar--ide from cheap and
accessible raw material ~ra!- fleveloped. -Lt is an nitrogen-contai-ning orgamc base
which can be used as a vulcanization accelerator in combination with altax, captax
or thiuram. In mixtitrps based on natural ruhber and a series: of synthetic rlzbbers
containing dinhenylguanid4ne in combination-with altax or captax, fur, flirhydram j Cie
can be used instead of d i,phenylgua ni dine. -Lt increased the iuraMlity of the
Card 1/3

2W~S)
Furfurk,rdramide and its w-ilcanization activity ~0511/11129
vulcanizates in repeated deformations. ~'Ihen it is used in co,&jinat-ion ,P-th cao-
tax, altax or thiuram in mj-xtiirr-3 based on natliral an(! a number of Synthetic rub-
bers, the rate of vulcanization does not change and vulcanizates are obtained
with satisfactoi-y technical properties. Its use extends the asEortment of vlil-
canization accelerators and decreases the consumption of caPtax, altax, diphenyl-
giianidine and thiuram. Its physical and cherical characteristics are: finely
crystalline powder of strawwellow color with dKO 1.15 - 1.16, melting point when
crystallized from ethyl ether 117 - 1180G. It is easily soluble in me'tlrjl, ethyl
and isopropyl alcohol, acetone, ether, benzene, but is insoluble in water. T he
molecular heat of combustion at P = const. is 1,828-15 cal, at V = const. it is
1,827-87 cal. Acids decomoose it to furfurole and ammonium, when ")o--'-led in d-J-
luted alkali it is converted to the isomer base furfurin. It absorbE ultraviolet
rays, whereb.y its color changes to a dark brown. It has a specific furfurole
odor. It is !)roduced from furfurole and. ammonium according to the
equation:
cit -
3 11
CIA C - C- ).tj Ff Qt+ jc~
CR

WVU9
Furfurhydramide and its ,rulcanization activity A051/11,129
Commercial furfi.irhydramide melt-, at 110- ll~OC. Its nitrogen tcontent is 10.4,1"
'10% found. Obtained data showed that when natural rub-
calculated and 10.20 - 10.3
ber is heated in the presence of furfurhYldramide and siilfur, there is a sic-nifi-
cant decrease of the plasticity, whereas the plasticity of natiiral rub!-~:-r con-
taininE only sulfrr or furfurhydramide hardly changes at all when heated under
the same conditions. It is concluded that Pirfurhydramide strengthens the struc-
turalizinC effect of sulfur. It does not affect the incl4-'nation of the mixtures
to scorching. There are 3 tables, L- figures and 8 references: 2 Soviet, L Lng-
lish and 2 German.
A11OCIAT! ;N: k4auchno-issledoliatells"-.i,,r inFtitut resinovych 4 7.;~teksnych 4z(ielj,,-
(B.Cientific i7esearch Institute of itubber and L-ite., .-rticles)
Card 3/3/

PRASHCHIKINA, A.S.; GRINBERG., A.Ye.; MAKAROVA, I.M.
Dependence between the chemical stnicture of some sulfur-conta-ining
compounds and their activity as accelerators of natural rubber
plasticization. Vysokom.soed. 5 -io.11:1641-1644 N 163.
(MIRA 17-1)
1. Nauchno-issledovatellskly institut rezinovykh i lateksnykh
izdeliy.

ACCESSION NRt APOo9l,56
S/0190/64/006/001/0112/0117
AUTHORS: Prashchikina, s A. S.; Gurlyanoval Ye. N.; Grinberg, A. Ye.
TITLE: The radical nata-te of breakup of a series of rubber plasticization organo-
sulfur accelerators
SOURCE: Vy*sokomolokulyarny*ye soyed-ineniya, Y. 6. noe 1, 1964, 112-117
TOPIC TAGSz rubbers rubber plasticizationp accelerator, organo sulfur accelerator$
dibenzoyldisulfidep dibenzoylsulfides diphenylpicry1hydraxylp accelerator breakups
radical, radical breakups mobile group
ABSTRACTs The plasticizing effect of derivatives of thiobenzoic acid was investi-
gated to discover tendencies toward radical reactions and whether a breakup into
radicals was essential for their performance. The exchange4 ility of Mi groups was
studied, using dibenzoyldisulride (DBDS), tagged with the SP isotopes as the
standard, Its interaction with dibenzoylsulfide) Zn-thiobenzoatej Ni-thiobenzoatep
benzylthiobanzoate, and bis-thiobanzoatabonzilidens was studied, using equimolar
ratios of 0.15 Mol/1 solutions in toluene, at temperatures up to 140C for 30 miaztes.
It was found that these accelerators readily enter into reactions. The experiment
was rjyjated, using ethanol, acetone, isopropylbenzene, toluene# and benzine as
Card

ACCESSION UR: AP4009156
solvents (at 55C)e Since polar solvents did not accelerate the reaction, its
homolytic character was stressed. In order to find out whether the reaction
proceeded via exchange of sulfur atoms or via RS groups, the same thiobenzoic acid
derivatives were reacted with a solution of elementary radioactive sulfur in
toluene, which showed that the reaction with MDS proceeded only at 125C and at a
very slow rate (amounting to only 10% within 2 hours). The next experiment was in-
tended to prove the mobility of the thiobenzoyl radical. The thiobenzoic acid deri-
vatives were reacted with a solution of diphenylpicrylhydrazyl (DPH) in benzene at
20-22C, the optical density of DPH being checked at a wave length of 520 m by
means of a SF-4 spectrophotometer. The results showed that the activity ot4the
various derivatives of thiobenzoic acid varied greatly, depending on their composi-
tion and the structure of R. Parallel experiments were conducted with natural
rubber) which was plasticized at 80-90C for 7 minutes on rolls in the presence of
10-2 Mol RS/kg of rubber, the resulting plasticity being determined in Muni's
viscosity units at 100C, This supports the view that the activity of the particular
.plasticizer is directly related to the ease of radical breakup, as established by
the reaction with DPH. Since Zn-thiobenzoate proved to be the most effective
plasticizer, a number of Zn-mereaptides were tested for their plasticization activ-
Ity. towards rubber " their reactivity with DPH, which confirmed their close
correla%ion. Orig, art. hass 2 charts and 1 table.
Card 2/3

ACCESSICH Nit: Ap4oo9156
A4SOCLITIONt Nauchno-issladovatellskiy institut rezinovy'*kh i lateksny*kh itdeliy
'S iontific Research Institute of Rubber and Latex Product3) Fiziko-khimicheskiy
iZatitut im. L. Ya. Karpova (Physical " Chemical Institutel
t
SUBMITTED: 22Aug62 DATE ACQ: 1OFeb64 VCLs 00
SU ODDE1 CH NO REF SOVs 005 OTHERt 001
C.,d 313

EPSHTETN, V.G.; PTIONFITEV, Ya.N.; MAKEYEVA, A.P.; TSVF.TKOV, A.I.;
POZIN, A.A.; PRASHCHIKINA, A.S.
Butadiene-styrene resins as reinforcing agents for rubber mixtures.
Khim.prom. no.5:261-265 Jl-Ag '57. (MIRA 10:12)
l.Nauchno-isoledovatellskiy institut rezinovykh izdeliy shirokogo
potrobleniya i Yaroslavskly tekhnologicheskiy institut.
(Rubber, Synthetic)
(Resins, Synthetic)

83296
S/138/59/000/010/008/010
A051/AO29
AUTHORS,,, Grinberg, A.Ye.; Tsvetkov, A.I.; Makeyeva, A.R.; Prashchikina,
A.S.; Levitin, I.A.; Shapiro, A.L.; Mamayeva, I.A.
TITLE. The Synthesis and the Investigation of Rubber Mastication Accelera-
tors
PERIODICAL; Kauchuk i Rezina, 1959, No. 10, PP. 35 - 39
TEXT~ Numerous articles have been published on the subject of acceierat-
ing the mastication process both of natural and synthetic rubbers by using vari-
ous organic compounds, such as mercaptanes, amines, nitro-compounds, nitroso-com-
pounds, guanidines, etc. The present article deals with the different methods of
obtaining them and the results of a comparative study of the action of dibenzoyl-
sulfide and zinc thiobenzoate, which were the first substances to be recommended
by the authors as accelerators (Ref. 4) in the mastication process in natural and
synthetic [CkC-30 (SKS-30),,CkH-26 (SKKN-26)]L?ubbers. The effect of these two a?-
celerators on the prop;7r-ties of the mixtures and vulcanizates were compared to
Renacite IV and Peptone 22, two mastication accelerators used extensively in 01 'n-
er countries. Dibenoylsulfide and thiobenzoate are non-toxic and are more easi-Y
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The Synthesis and the Investigation of Rubber Mastication Acce'leratrr_z
and simply to obtain than Renacite IV and Peptone 22. Dibe=ylsulfide has also a
higher activity. Other chemical properties of the latter compcund are listed
(Ref. 6). The synthesis of dibenzoylsulfide for this study is outlined and the
obtained product described in detail. Thiobenzoate was obtained from sodium thio-
benzoate and zinc sulfate by means of a mutual exchange of the salts in an aque-
ous solution (Formula 1). The laboratory procedure is explained (Formulae 2, -~,
and 4), and the experimental results discussed. It was seen that dibenzcylsul-
fide as a mastication accelerator of natural rubber, on the rollers and In the
rubber mixer, surpasses Renacite IV, Peptone 22 and zinc thiobenzoate- it also
accelerates the thermomastication of SKS-30 and SKN-26. Zinc thiobenzoate as an
accelerator of mastication of natural rubber is equivalent to Renacite 17V and
Peptone 22. Dibenzoylsulfide and zinc thiobenzoate just as Renacite IV and Pepto-
ne 22 have no effect on the properties of raw mixtures and on the physico-mechan-
ical properties of the vulcanizates. Mass production of dibenzoylsulfide and
zinc thlobenzoate should be started, since they are simple to manufacture and
have a high activity as accelerators of rubber mastication. There are 8 graphs,
4 tables and 6 references.,- 4 Soviet and 2 German.
ASSOCIATIONS Nauchno-issledovatel'skiy institut rezinovykh I lateksnykh izdelly
(scientific Research Institute of Rubber and Latex Products)
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