SCIENTIFIC ABSTRACT PETCHENKO, O.I. - PETELA, R.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001240220011-8
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: January 3, 2017
• Document Release Date: August 1, 2000
• Sequence Number: 11
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

PETCIMIKO, 0.1., prof.
Womenclature for the presentation and movement of the head in labor.
Ped.p akush. i gin. 23 no.6:56-57 161. (MIRA 15:4)
1. Zaveduyushchiy kafe,d,roy akusherstva i ginakologii vrachebnogo
fakulfteta Krymslcop meditsinskogo institute. (rektor - dotsent
S.I.Georgiyevskiy LHeorldievs1kyi,
(OBSTETRICS-T&MENOLOGY)

Country : RUMUTIA E
Category: Analytiml Chemistry. tmalysis of Inorganic
Substances
Abs Jour: RMYhim-, No 17, 1959, iio- 60507
Author Petcov, R., Raducan, G.
Inst
Title Determination of Zirconium in Alluvial Sands
Orig Pub: Rev. chin., 1958, 9, No 7, 459
Abstract. A sample of the antralyzed sand (1-2 gr) is heated
with 30 rJ- of a nixture (1 -- 10) of 112SO4 Land
11F, the residue is treated 3-4 times with 1kra-
ter with evapomtion to dryness, then calcined
and fused with 10 gr of molten borax. Stcr
cooling the neit is dissolved in 150 ml H'Cl
Card 1/4

Country : MIMA E
Category: Analytical Chenistry. Analysis of Inorganic
Substances
Abs Jour: R7301(him., 110 17, 1959, No. 6o5o,r
(1:5), boiled and diluted with water up to 250
ml voltuno, Tri the qravimetrical determination
of Zn, to 100 ml of the obtaincd nolution are
added 10 ml of conc. 1M and 50 rrl of 16,,) hydro-
cy--nic acid, heeping the solut!.on for 30 minutes
on a steam bath at 850, The p:recipitatod
residue obtained after cooling is filtered out
on a filtering crucible No 3, -w-ashed first with
21141 IM solution that contains 5,.) of hydrocyanic
acid, and then 2-3 tines with ethanol, and dried
0
at 110-120 . ThL~ cr.lculating factor for ZX02 is
equal to 1772. For the photometric dutermination
of Zr, from the primary solution (obtained in
Card 2/4
E-12

Country : RLM I 1A EI
Category: Analytical -hcmistr~y. '_nalysif; of 1norc-"ri_'c
Substances
':c 17, 1959, No. 60',07
Abs Jour: RZhKh i in - , .
dissolving tho r--w sarTle) two 10 ml samples are
tahen to each of thern. 2 ml. of 25',, solution of
IM Oif - IfCI ar,_ added. The samples arL: then hea-
tei for 2.3 Zsic7 minuter. on a water bath (in
so doing the samples become colorless), cooled,
followed by the addition of 2.5 ml of 10'1', I[Cl.
Then to one of the samples is added 1 m.'_ of
0.05 M solution of complexon EII (for the mas-
king of Zr). 5 ml of 0.11,, solution of alizarl-
ne red are then added to both samples followed
by keeping samples on a water bath for 3 minu-
tes, cooling, diluting with water up to 50 ml
Card 3/4

Country : RLM14 L~k
Category: Analytical Chemstry
Substances
Analysiii of Inorgan.,c
Abs jour: RZhKhim., 110 17, 1959, 11c. 60'-07
volume, and conducting photomctric test at
570 M~A , -i-,Tploy-ng thc samplc com~iininG com-
plexon III as % n-furcncc sample. -- B. Vznolc
Card 41/4
E-13

BITTNER, J.; OLINESCO, Eleonors.; PETCOU, Rica-Maria
Experimental data on the maintenanoa of viability and toxi-
nogenic capacity of C1. perfringens, type A, after contact
"in vitro" with large quantities of penicillin. Arch. Roum.
path. exp. microbial. 22 no.1:137-151 W 163.
(CLOSTRIDIUM FERP-MINGEITIS)
(TOXINS AND AJITITOXINS) (PENICILLIN)
(CULTURE MEDIA) (PHARMACOLOGY)

-ol 0!-4
Vo

MEN

171

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of
Anduatrd

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)=$I:-Of NO

Mar ik
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~7 tbcdc4wili tha-idci~i h'
ii
--tube Intist
- 1~ mr)
elltl~ high to _thc
- L
.
_.y
_tftt
'0j 116
tw

4 U..~ (lads-
tubs
ftedi valva to kbo
W6d-kr

Suit.

N.7

Yr,
WWT
- Rm","
It
Chil" rm

71
otev
0 g of Rol l a

and, a
~~o
bolling walif
ot is
of aP solve (
of AIC - kr.~fsl
-"d' i*b

-iota, is MOAO~
vrid after J~l i
or tbo soln-M
stid (0-ax im
V"t" 0

atiaur
a cr6c

o
-
~k

tb* coal
41 made -up
-am
"ith I
MAL To mr
AIC1,
mil SL

RIGOVFANU, N.; LIVOVSCHI, L.; DUMITRESCU, I.; FSTCU A.
Automation equipment of a deep pumpirg well. Probleme automatiz 4:
193-200 163.

PE11cli , .1-1.
I-t'- l,' r~e -;f- f i r ' - ~ r , I -, T - I . ': : - r ~ ~ --rl --r ~ 5. ~ " - ~
raly. mar -16 rin.j''! - ;-"-" I 6z. .

ACC NR, AP6029591 SOURCE CODE: RU/0022/66/011/004/0177/0183
AUTHCH: Priscu, Radu (Engineer; Specialist); Pqcii., Andreea (Engineer; Designer);
Constantinescup Florin (Engineer; Designer) ' ~ I I I - -1- ~ -, , - - .
ORG: Hydropower Study and Planning Institute (Inst.Ltutul de studii si proiectari
hidroenergetice)
TITLE: Behav-ior of the Secul-Resita Dam in the first two years of operation
SOURCE: Hidrotchnica, goopodarirea apalcir, meteorologin, v. 11, no. 14, 1966, 177-183
TOPIC TAGS: waterway engineering, concrete
ABSTRACT: The authors describe the measuring anparatus installed at the Secul-Resita
buttress dam and present the results of the measurements taken during the first two
years of operation of the dam. The factors observed are: evolution of temperatures
in the concrete, amount and distribution of subpressure, displacement of building
blocks in the crest, and opening of the contraction Joints. Orig. art. has:
8 figures. (Based on authors' Eng. abst.j [JPRS: 36,844]
SUB CODE: 13 SUBM DATE: -Dec65
Card 11,

JETCU, AWIAIO ing.
N=b9rimgp awltahing, and vignaling in intarurtqp telephone auto-
matiozu Teleaomuniaatii 7 bo.6:250-25~ N-D 1650;

?-ZGU,

PFT(-J , Emar n i.1 : " c:- -3 1~ ,
- r-, - . ~
~.,3 7 $1 rp- t ~ r.ri 2 '. e~ ~ r. t-- ,- .. .1
, ,~- 1~-
r. -. , -, , , ., 1
-9, 1 . .

FAMONI C.C.; POPESCU, Ilie; BIRZA, Elena; FETCU, Georgeta
Investigations on the interfarmece of glutathione in energy
R=aian 14 fkav. no.lt2l/.-220 Ja-Mr 161.
(WABOLISM pharmacology:' (GLUTATHIONEE pharmacology)

REBUSAPCA, D,; SOARE, R.; MASALA, Gh.; PETCU, Gh.; HRISTACHE, 1,
Machine building industry, a creation of the PeopleIg
Domocratio Regime of Rumania. Bul Inst PolAteh 26 no,41
29-37 Jl-Ag 164,
1. Chair of Political Fconomy, Polytechnic Institute, Bucharest.

FUYANTA/Ilu:m:i a~.d Ani-.ial Physiol.:)Lzr - Internal Secretion. T
,-'D ~-' : III - 13 1 c .
Abs Jour Ref Zhur Biol., 11c; 3, 1959~, 12925
:aith -jr Parhin, C.C., PetcL,.,_-Ge,4t~~rwta.
I, ~st AS RPR
Influence of Epipl.yseal Extracts on Excrett)r, ,f Creatine
in the llrii-w
Ori~; Pub btudii si cercetari fizi-)I. Acad. RFR, 1957, 2) No 3-4,
305-308
Abstract 14-.) abs'~-act.

CONSTANTItlEANU, M.I.; PISEA, C.; PE7CUJ I.; GAVRIU,13CU, E.; XNSTANTINEANIU,
R.
Massive attack provoked by Hyponomeuta mahalebella luenee on
the bols-de-Sainte-Luclo (Prunus mahnlab L.) In the southwost
of Dobruja and its natural enomies. Anal St Jagay 11 10:113-
120 164.

PETCU,_iaa___,
Good and useful way f or thei Runar4an workers to spend -.heir
free time. Munca sindic 6 no.5:20--23 My 162.
1. Director al clubului Uzinele do tractoare, Brasov (for Petcu).

GUTU, C., ing.,--PETCU, M.,-;ing.; SOGI, Antojkneta,, ing.
Calculation,of the economic effects of the electric interrtwtioaw ijr
cotton spiw4ng mills and in cotton fabric finishing. Ind text Rum
132 no.'8t3D9-314 Ag 162.'
.1

PANOW., N.; CARABOGDAN, I.; SINGM, G.; SCHWARTZ, M.; PETCU, M.
A 10 t/b lignite-burning boiler vith Inverted otoker grate. Energetica
Rum 9 no.10:396-402 0 161.
1. Institutul do energetica al Acadomiei R.P.R., Uzina de utilaj
petrolier si chimic, Bucuresti.
(Steam boilere) (Lignite)

ll~
GUTU, G., ing., PETCU,M., ing.; SOCI '.Y-I A. , Ln g.
CaIGulatian of the economic affoc',Lj ~~f e2ect-ric af-cicler.tal
interruptions. Energetica Rtun 11 no.10:5125-531 0163.

PETICU, M. ; NAGY, C.; MIANEA, S.
Prognosis of electric enerCy and power. Rev electrotechn energet
8 no.1:131-148 163.

PETCU M.
PETCU
_7~----
SOCI , A.,

PETCU 14ihai- NAGY, Gsaba; WEA, Sora
Pl'oponlo of Oloctrical eniorgy tui~j lj(ywyr. Pt. 2. Studil c*erc enerFA-t
A -12 no.4:535-551 162;

i[Petcu, Mhall
OatIook for the conditions of loae[ing electric power systems. Rev
electrotechn energet 6 no.1:195-205 061.
(Electric power distribution)

GUT'J, Constantin; Pi"ll""I", I-Ilhai; SO:,:, Antonneta
,r -I ter I; a for es'~Lma-- Ing ec-,n.j---' z: -a Iff ec-.s causea b~, -.o--,
varia t 4 orbs .i~ev eiec'.rotec,~m enerk-,, ~. 9 nn.3:357-36b lc~

AVRAlIvESCU, Aurel, acad.; DRAG~-Irl, Gleb; AD,U.,TT, losif; FETCU, Mircea
Q~.Itr,h'ng overvLi~t&gc~3 modeled by it quadrlpole. Rev elfictr2tecJrln enerceet
9 no.3:3311-339 '6 -1

ADAMIUT, Iosif, ing.; ~--`IVU, 1.'.ircea,.Irg.
- -------
Contavaination of the insulation. Faiergetica Rum 12
no. 3:135-138 I-Ir 164.

PETCU, N
Best wa ya of separating gas from oil. p. 162
FE~GOL SI GAZ--'.. (Asociatia Stiinijica a Inginerilor si Technicienilor
din Romina si Ministerul Industrieie Petrolului si Chimiei) Bucuresti,
Rumania; Vol. 9p no. 4, Apr. 1958
Monthly List of East Euroj^an Accessions (E-EAI) LC Vol. 8, no. 9,/1959
Unel.

RMW IA / Choi--iical ToOhnolOgY, Ch,lmicPl Pro(lucts H-23
and Thoir Appliontlons. Ohoiliical l-'roooinsing
of Nctural Gases and Putroluu;n. Mo'L-Ior and
Roo'-cot Fuol Lubricants.
Abs lour: Rof Zhur-KhL--liya, No 3, 1959, 9672,
Author Po-tauIV
Illst Not givon.
Tit1c. Optimu.,,i Conditions for Suparating 23trolown
Oil and Gas.
Orig Pub: Potrol. si i2az~j, 1,-',b8, 9, No 4,
Abstract: Formulas arO 3U69OStUd for calculatLig thu coi-!i-
position of tai gaseous a;ad liqui-I phase in th,~
hydrocarbon -aixturu tallkQn fro--ci oil-walls in
drillin,S for pcTrolc~wra. Rosul"Lls are &,ivan for
a two-step division of a mixturc of j~ctrolouza
Card 1/2

T - f ,
I I- I" *
Tlie Tnfluence of the Flo% Prite of Petrolenri rinses tI,rOIIFh
Coal on tho Roc!irr~rrtllnn r~-" "etrol :-i (,,170 ~Tle trolotim !inrl `nfiofOp
# 3: 1()0: Mn r 55

PETC J, N.
FETCUP N. Som._ consi Jerati=s cn ~.n oiUieli bbilers.
no. 11, Nov.
,,T
tucurestil, Rumanip
zc: -astern _~,urc-,e--.n ',rr. Ssiorl

PETCUS N.
PETCU, N. Effect of different inpurities in gaties (geasy r-,U5, water) *~I.:~,~r,
effi-cie cy of gas injections into strata. p. h68
Vol. 6, no. 10, Oct. 1955
RUMANIAN*SOVIEK Friendship
Bucuresti, Rumania
So: Eastern European Accession Vol. 5 No. 4 April 1956

FETCU, N.
Possibilitier, of obtaining liquefied gases in cracking stations. .,. P3.
Petrol Si Gaze. Bucuresti. Vol. (, 140. ~, Aug. 1T5.
SOURCE: East European Accersions List (---FAL), LC- 101- 5, No. 3, March 1956.

PETCUS N.
PETCU, N. Possibilities of obtaininE i1quefied -mase3 in c,-ack--:-,E 5-.;-Itic:~L. -. _;.
Vol. 6, no. 8, Aug. 1955
PLOMOL SI aAZE
Bucuresti, Rumania
So: Zastdrn European Accession Vol. 5 No. ), April 1956

IDII tbb,tMefti

out-alls oil
to
x0pli
i
l
Dr
b
s

I I . ) I I I I . . . I

PETCU, P., Pharmf;cist
Department of Bot.,ii-lical Pliarmacomooy, School of Plluli-,..~.C7,
Cluj (Catedra do faimacognozio-botinica,
Far,~ucie, Cluj)
Buc~uirost, No 6, Jun 63, pp 359-370
"Res,-arch on the Lyna:7,ics of Vi-,imin C Cwmlition in -'eve..;U3
Specir~s of Berberis.11

PiMU,
NO /, Aor A7,
IIPIT),tocheaicai hive-, ti. -a tion!-, on thr, ?lant Beri)eriE;
Tarouc,rma C. Scrmeidy lic L-i;,f!-d rinct u7-n,',Ii j--j t1ic,,
C-;--rd f C

STOIA, I., dr., doctc-- in Btiinte medicale; RDITEZU, P., dr.; GHE7,07, 0.
dr.; PETCIJ,-.R., dr.
Factors causing recurrence3 in chronic evolutive polyarthritis.
Med. intern. (Bucur.) 17 n,:).1:61-64 Ja 165
1. Lucrare efectuats. in Centrul metcdologic de reumatologle,
Bucurestl (directort dr. 1. Stoia).

STOIA, I., dr.; MAFIV, D.p dr.; GEOnGESCU, A, dr.; ERATU, 1&,q dro;
NITESCU, S. dr.; LM?TM, 1. dr.; NICUIESCU,D., dr.; IAMYSCHI,M,
dre; PETCU, R.
The role of dysmetabolic aomponentm In activation of arthroses
and spondyloses. 1. Med. intern. (Ricur.) 16 no.6:653-657
J0,64.
1. lucrare efectuata la Gentrul metod.ologic de reumatologie,
bicuresti. (directort dr. I.Stoia).

A
no 5:

PETCU, V... ing.
Examples of devignirip contijiuous girderv of monolithIc
rainforeced concrete .in the p1astic I'iald. Rev congtr Bi
mat constr 15 no, 12: 618-622 D 163,

PEMU, Valeriu (Bucarest)
UtIlIzation conditions of hyWrBtatic ferroconcrete structures
in calculations based on their plastic state. Archiw inz lad 8
no.10-18 162.

PETCU, Valeriu
The plastic hinge in the plas-Ac design of reinforced
cvW-rete structures. Rev mac. appl 9 no. 1-101-116 164.
1. Institute of Building Rosearch and Construction
Building Economics, Bucharest.

PETCU, Valeriu
~. -
A new concept in the plastic dasign o:" reinforced
concrete structures. Studii cerc mec apl 14 no. 6:
1259-1276 163.
1. Institute of Building Research an-i Construction
Building Economics.

PETCU, Valeriu
Plastrc -calculation of reinforced concrete circular
plates stressed by symetrical loads. Studii cerc =ec
aPl 15 no.1:159-188 164.
1. Institute of Building Research and Construction
Building Economics, Bucharest.

PETCU Valeriu
...... .1 J
Plastic overload coefficient in the calculaticn of
hyporstatic reinforced concreto structures, Rev mec
appl Roum 9 no.6:1391-1413 164.
1. Institute of Building Rese%rch and Construction Economics,
Bucharest.

BTCU, Valeriu
Generalization of the indirec-I., meThd of plastic calculation of
reinforced concrete structuree. Stvdii oerz me~ apI 14 no.2~
441-4A6 163.
1. Inatitutul di) :--orcotarl In constructli 9i econamin construoUil-)-.
(IWX,RG), Bucuresti.

FETCU, Valeriu
Direct and indirect wthods for the conjmtation of plastics in
the reinforced-concrete structures. Studil cerc mec apl 13
no.5sl273-1278 162.
1. Institutul de cereetari in constructii si econcmia constructiilor
(INCERC), Bucuresti.

PETCU Valer~u
Plastic hinge in the plastic design of reinforced concrete sti-actures.
Studii cerc mec apI 14 no.1:55 *9 163.
1. Institutul de, cercetari in constructii si economia constructiilor,
Bucuresti.

PETCU, Valeriu
Carrying capacity of the curved reinforced-concre-b-, bea:~3 5-u-,
Jected to torsion and bending. 9ttidii care more apl 13 no,~,651-
667- 1629
1. Institutul de cercetari in constructli si economia constructUlor
(INCERC), Bucuresti.

P37CUP Valertu
A b"lo principle in designing statically indaterninate structures
of reinferreed concrete in the plastio range, Studii core moo apl 12
no.5:1017-1023 161.
I, Inotitutul de carcetari in oonatruotii mi eeonmia construotiilor
(INC M ), Budureati.

BAIAN, St.; PETKU, V. [Petcu, V.); RKUTU, S. (Bukharest)
------
Studying the behavior of Vierandeel beam in the elasto-plastic range
using chromoplaatic models. Stroi, mekh, i reach. soor. 2 no.2:19-
22 160, (MIRA 14:5)
(Girders-44odels) (Plastics)

FETCU, Valoriu
Principles of the plastic ca.1culation of reinforced co=ret---
Studii cere mec &pI 14 no.3:705-?14 163.
1. Institutul de cercetari in conatructii si economia constructiilor,
Bucuresti.

.FETCU. Valeriu
o----
Bases of the statically nondeterAdned reinforced-concrete
structures of equal plastic safety. Studii cerc mec apl 13
no./+:891-902 162.
1, Institu~Vj de cercetari in constructil. Bi economia constructillar
(INCERC)., Bu6uresti.

PMU, Vlaeria-
Garz-ying capacity of the statically nondetermined reinforced-con-cre-te
beam with variable cross section. Studii corc mec aiDl 12 no.4:
853-859 '61.
1. Inatitutul do careetari in constructli si economia constructiilor
ONCERC), Bucuresti.
(Girders) (concrete) (Strength of materials)

RUM/8-59-1-9/24
AUTHORS: i BAlan, St., Rgutu, S., Arcan, M., Petcu, V.
..==--=Q~
TITLE: Study of the Behavior of Constructions by Experimenting With Mockups
From Plastic MaterialsVI
PERIODICAL: Studii si Cercetari de Mecaniog Aplicat~, 1959, Nr 1, PP 151 - 172 (RUM)
ABSTRACT: A new method of experimentation with reduced scale mockups has been
developed for the studies and calculations of new construction types.
The mock-ups can be made from the same material as the prototype or from
some other material. The authors first pose the problem of similarity,
indicate with "m" the elements of the mockup and with "p" that of the
prototype, and establish the following scales:
scale of lengthes: em 1 lp (1),
scale of time: tm t (2),
p
scale of unitary power. Um -L . or (3);
OL P
scale of move: f5 -
Card 1/11 m ts &P (4)
LK

80416 RUIV8-59-1-9/24
Study of the Behavior of Constructions by Fjcperimenting With MockuP3 From Plastic,
Materials
scale of elasticity modules: H E (5).
m p
Each mockup is made for a certain type of stress, and the problems of
similarity have to be examined only for the respective stress. The r,~,-
lations thus become more simple and easler to be solved. The au*hors
then study the cases of a moclaip made from the same material as 1-ho
prototype, where Em - Ep - E and T - 1: a) Static stress in the elastic.
zone! If the mockup is stressed only by external load, the relationz
between the moskup values and prototype values are;
p 1 R, ; Em = -L . [ 1 1 P 1
m - 0( p CL p2 Pm - 0( . h 2 p ; &m ~ 0( 7L p
If the stresses which provide from the proper weight are not neglectable,
they have to respect the similarity relation: G G I thu 5 oc = 7L
m P
This case Is not advantageous since the displacements are
very small and difficult to be measured. In case the proper weight has
to be considered, the similarity relations are:
1 1 . 1 -
sm . , 6
Card 2/ 11 Pm - 7L m 'E ; Pm P - (7)
p p pL3 p k 2 p

OC42e,
RM/8-59-1-9/24
Study of the Behavior of Constructions by Experimenting With Mockups From Plastic
Materials
b) Static stresses at heavy axial loadS: The deformation scale has to
be the same as the scale of the length:; 1 1
(T- =
and the similarity relations become:
Pm -, pp; E m - Ep; Pm - -L p ; ~ m
~j 2 p 7L p
a) Static stresses in the elastic plastical zone: It Is necessary that
6 (y , thus oL - 1. The similarity conditions are given in this case
bymt;e r9lations (8). d) Dynamic stresses- The inertial powers interfere
in this case with the external stresses. Accepting the time (2), the
acceleration ratio is: 2
am aP (9)
and the inertial power ratio ls:
Im mm am 2
IP mP aP
Since all forces which act on the system have to be In ratio with-L
Card 3/11 the scale of time is- 't - 71t. (Nr 10) . If there are concen'trat-ed ma5ses 14p1",

D04A,
RUK/8-59-1-9/24
Study of the Behavior of Constructions by Experimenting With Mockups From Plast~,c
Materials
(Mm, Mp) on the 14 construction, It Is necessary that
Mm 2 1 - 1 (11';.
p . ?L A, 3
The authors then proceed to the examination of mockups made from some
other material than the prototype. A good material has to be homogeneoo-q
and isotropic, to be easily processable, to have a relatively small
elasticity module in order to supply easily measurable deformations,
a) Static stress in the plastic zone: Using the scale of lengthes (1)
and unitary power (3), results, for the scales of forces, extension a-rid
displacement:
P - 1 P m F- (12).
m c(. )L2 p Oc p m oL - k p
The value of OL is,-, OIL = P - A~ (Nr 13). b) Static load at heavy axial
stresses: The similarity can be guaranteed If the influence of thc.
proper weight can be neglected or Is replaced by an external. strez:-s By
posing the condition- m em
Card 4/11 p p

F;O 4.~6
RUM/8-59-1-9/24
Study of*the Behavior of.Constructions by Ftperimenting With Mookups From Plastic
Materials
one obtains the supplementary relation: Ok and the relations
1 r 1 1
Sm - ?L 0 p, PM = T. 7L2 I P p m p PM - T Fp (10,
c) Static stress in the elastic-plastical zone-. To obtain a similarity
between the bahavior of the mockup and the prototype In the elastic-
plastical. zone, there is a relation necessary between the elasticity
modules of the materials used for the construction of the mockup and
prototype (Figure 1):
Om - 1 a ; E (6 1 E (a i 5)
OL p m m T p P
By knowing the values OL and the relations betw,~-en the other para-
meters are:
PM P m
m OL p oC ?L 2 p 0t k P
d) Dynamic stresses- Knowing the coefficients Ok and the
acceleration ratio is: 2
a
m 0(
Card 5/ 11 an the time scale:

km/8-59-1-9/24
Study of the Behavior of Constructions by Experimentirig With Mockups From Plastic
Materials
V
P
Experiments with plastic mockups are being carried out in many foretgn
laboratories. The new plastics allow the observation of the plastified
zone by a decoloration of the material. This method has been called
"Chromoplasticity". Plastics used for the construction of mockups are
IP polyvinyl-chloride varieties, developed at the Institutul de cercet~yl
chimice "ICECHT?4" (Chemical Research Institute) by a team led by State
Prize Winner N. Goldenberg. Thr-e-e-P-T-a-377 -varieties have been used,.
1) "SDE", 2)_"_S_DP_l7T_1;iTd 3) 'ISDP-2"; "SDP-3" and "SDP-4", SDE:
perfect elastic behavior for 6 4 elasticity module at. bending:
E - 36,000 kg/sq cm, proportional4y, limit% Cr - 550 k&/sq cm, flow
limit: 60 - 6oo kg/sq em. "SDP-1". becomes Alte If the tensional
flow limit, has been reached. Elasticity module at bending-, 30,000 -
36,000 kg/sq cm, flow limit: at tension: 550 700 kg/sq cm, at com-
pression:600 - 800 kg/sq cm, at bending: 1,-50 750 kg,/sq cm. The flow
limit values within this Interval, depend from the thermal treatiNent of
the material. "SDP-2", "SDP-3" and "SDP-4": elasticity module at
Card 6/11 bending: 20,000 - 35,000 kg/sq em, flow limit- at tension; 450 - 500 k&/sq em,

80416
RuK/8-59-1-9/24
Study of the Behavior of Constructions by Experimenting With Mockups From Plastic
Materials
at bending: 480 - 600 kg/sq cm. The values of the elasticity module and
flow, depend from the thermal treatment of the material. "SDP-2", !',~:,DP-311
and "SDP-4" become white at tension and black at compression, Tbe
characteristics diagrams of the second and third varieties are very
similar to the theoretical diagrams of Prandtl, being almoet perfectly
elastic for 6---' 6 . and perfectly plastic for 6 w 45 0 (Figure 2). The
first experiment has been carried out within the Chair of Mechanical
Constructions of the Institutul de Constructii (Institute of Constructions)
in Bucharest with the "SDE" plastic, by checking the frequency of the
proper vibrations of a seven-story frame (Figure 4), The plastic mockup
has been built in a scale of 1:30. The concentrated masses have been re-
duced to 1/4o,ooo and the time value scale was tm - -1 tP, The ex-
periments have proved that the hypothesis of the 1nf7TnWte rigid spars of
the frame is admissible. New statical conputation method6 of tower c-on-
structions have been checked by another e):perlment [Ref 2], a-ccomplished
with "SDE" material. By using "SDP-1" material, the moment. of the
appearance of the first plastic joint, the points of the appearaji,~e of
the joint, their order and the computation of the bearing capacl,.y have
Card 7/11 been checked by a frame (Figure 6), loaded symmetrJeally [Ref 21 BiZed

80416 RUM/8-59-1-9/24
Study of the Behavior of Constructions by Experimentiz*43 With Mockups From Plastic
Materials
on a computation of G.I. Rozenblat [Ref 3], the appearance order of the
plastic joint should be, as shown by Figure 6. According to the ?alcula-
tion gf the first order, the breaking load is
me
Pr - e9- P me - 103 kg. cm, Pr - 82.4 kg.
According to the calculation of the second order [Ref 61, the breaking
load is Pr = 72.6 kg. The real breaking load resulting from the ex-
periment was 7 kg. The-results obtained from mockups can be used for
the construction of normal size if.
N Iy N Y
1 1 2 4
1 + 1.6 1 _F_ ' __(_ _F_ ' -7--
is equal for both., the model and the construction. Since this condition
is not satisfied, there is no similarity between the mock-up and the con-
struction, which has an influence only upon the bearing capacl!y, The
bearing capacity of the prototype is:
Prp - OL . k2 .p p
Card 8/ 11 m

6'0~1.6
RMVB-59-1-9/24
Study of the Behavior of Constructions by Experimenting With Mockups From Plastic
Materials
Apresenting the influence of the axial loads upon the bearing capacity
of the frame. The 'q coefficient is 0.98 - 0.99 for the prototype. and
0.85 - 0.95 for the mockup. In case of a metal prototype with A - 50,
E - 2, 100, 000 and 0' 2,400, and a mocilcup of "SDP-1" with a' C .
= 550kg/sq cm, Em V000 kg/sq cm, the following result is being ob-
tained: I
I M
The experiment supplies the appearance points of the plastic joint,
their order and the bearing capacity. Another experimental frame
Ref 5] is shown by Figure 8. Two mockups have been made, the one from
SDP-2" and the other from "SDP-3". Die results are shown by the table
on page 162. A series of experiments have been conducted with photo-
elasticity. Photoe~astic mockups are made from "Dinox F-110", an optical
active epoxy resinjO produced in Rumania [Ref 6]. The behavior of a girder
with rec-faMn-g-u Tar oles made of "SDP-1" and of "Dinox F-110" has been
studied simultaneously. The authors have examined: a) the bearing
capacity; b) the Influence of the concentration of tension In the hole
Card 9/11 comers upon the bearing capacity; c) the regions of entrance Into the

6D41/6
RLI~V&59-1-9/24
Study of the Behavior of Constructions by Experimentir% With Mockups From Plastic
Materials
plastic zone; d) the coincidence of these regions with the m~Lxlmum stress,
resulting from the photoelastic mookup. Mockup Nr 1 (Figure 10) has Lo -;;, 5,
thickness 6.5 wn, square-shaped holes with the side dimension H
H Lo
of solid section 3 x 6.5 mm. Mockup Nr 'e Tvig 'had -;;> 5, thicknesz
6.5 mm ectangular holes with H base and~~ M;t ' dimenslon of solid
s
,tio~ # x 6.5 mm. The experi7yentation wl
ec th mookup Nr I has proved that
the loss of the bearing capacity of the bar was due to the unitary forces
of tension in the lower section, in the region of the two central solid
sections. Figure 12 shows the distribution of the tension In the ela-stic
field. Accomplishing the calculations, P - 112 kg, at which the plastifi-
cation has appeared, thus resulting for the "SDP-1" mockup: Cr - 530 kg/sq cm.
The calculation of the unitary tension force has been accomplished by con-
sidering the value of the material band: T 0 1 - 5.25 kg/sq cm/cm. The
thickness of the mockup from "Dinox-110" was 5.5 mm and the power by which
the isochromatic table has been established was P - 18.7 kg, The may-imum
tension has appeared not in the mainly stressed middle section but in the
solid section. The experiment with mockup Nr 2 has proved that the loss of
the bearing capacity was due to the shearing of the solid section (see
Card 10/11 Figure 11). Regarding the bearing capacity, the loss has been produced at
VI/

80416
RUM/8-59-1-9/24
Study of the Behavior of Constructions by Experimenting With Mockups Pront Plastic
Materials
the mockup Nr 1 at P - 125 kg and at mockup Nr 2 at P - 100 kg. Other
experiments have been conducted with a curved bar exerted to horizontal
syrxnetrio forces (Figure 15) and a frame exerted to a horizontal force.
Plastic materials allow a study of a wide range of problems, regarding
the kind of loss of the bearing capaolty. Chromoplastloity makes the
direct detection of plastic deformation ;;ones possible which cause the
rupture. The experimental results have been checked by theoretical Cal-
culations and photo-elastical experimentittions. Chromoplastic experiments
are very simple and can be accomplished without special devices, except
the load arrangement.
There are: 22 photographs, 2 diagrams, 2 graphs and 6 references, 5 of
which are Rumanian and 1 Russian.
SULIMITrED: October 29, 1958 q1
Card 11/11

FETCU,, Valeriu, ing.
optimum plastic solutions for reinforced concrete
continuous beams with variable cross section. Bul cerc
constr sistemat no.2:3-31 162.
1. Institutul de cercetari in constructii si economia
constructiilor.

,'-arnfactitre of a Farirway from ir,-str,-ssed cor.cl...te. P5-
ItEVISTA CCI,'STRJCTIILOR SI A n? COESTR"CTII. (A3ociatia
Stiintifica a Ingineril,)r si Techricienilor din Rominia si 11-1irdsterul
Constractilor si al -RateTnialplor di Constructii) Pururesti, Ruria-ia-
Vol. 10, no. 6, June 1958.
M -
'onthly List of L~ast European Accessions (FE.41) L"', 7o1. 8, no. ", june 19;9
Uncl.

=CU, V.
Solving systems of w! t. ions of e" astic equil ibriirn by Jacobi typc n,,itrices.
P-955
STUDTI 31 C&RCETARI "F, A:-- '("11-A. Acqle-ua Republicii F"Pu-Inre Romirle
Bucure3ti, Ru-nania
Vol. 10, no.?, 195?
Monthly List of East Europrnn AcCC30j.OnW (FE T ) J,C Vol. '), no.1, Jan. 'N~
Uncl.

r =-, V.
On the statics of a reinforced-concrete be4im with a variable cross gection sub-
jected to torsion. p. 200.
REVISTA CONSTRUCTMOR SI A 14ATERIALELOR DE CCNSMUCTII. (Asociatia
Stiintifica a Inginerilor si Tehnicienilor din Rominia si Hinisterul
Constructii.lor si, al Materialelor de ConstructU) Bucuresti, Rumania.
Vol. 10, no. 4, April 1958.
lJoythly list of East European Accessions LC Vol. 9, no. 2, Feb. 1960
Uncl.

PETCUs V.; BALAN, S.; RAUTU, S.
------------
Introduction of SDP-l plastic mass in the study of constructions on
small-scale models. P-903
COMVICARIM., Bucuresti, Rimnia, Volo 8# noe 9, Sept. 1058
Monthly list of %ropean Accossions (FIFAI) Lr,, TA. B., no. 8, Aur. 1959
Uncl.

PEMU., V.., TANNENRkUH.0 M.
Experimntal study, on natural scale, of a cylindrical cowring of prestressed
concrete for social-cultural buildiMe. P. 335.
REVISTA CONSTRUCTULOR SI A MITERIALMOR DE CONSTRUCT11. (Asociatis Stiintifica
a Inginerilor si Tehnicienilor din Rominia si Hiniste-rul Constructiilor si al
Materialoor do Constructii) hicureati., Rumania. Vol. n. No. 7# July 1959.
Moutbly List of East European Accessions (ERAI) IZ, Vol, 9, No, 2, Feb, 1960
Uncl.

P_

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A- (-n) Tt.0 'I *X 99
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7i,- r-n'l t i o.-i r,

COHN, M.Z.; FEETCU, V.A.
On the lnfluerce of steel rercentape on the plastic adaptability
of redii-dant reinforced concrete beans. Bul Ac Pol Tech 8 nc.
11/12:713-721 160.
1. Structural Depart-nent, Building Itesearch Institute, Bucarest,
RPR. Presented by W . C19zak

COHN, M. Z.1 FETCU) V. A. (Bukareazt)
Influence of steel percentage or, the p'Laetic adaptability of redundant
reinforced concrets beams. Archiw inis :Lad 7 no.3:361-375 161.
1. Instytut Badawczy Badownietwa, Bukareazt, Rumania.

PETCU, Valeriu
PI&StiCit7 of the reinforced-corcrete continuous beams.
Studii cerc inec ap] 12 no.6:1321-1334 '61.
1. Institutul de cercetari In constructii 9i economia constructillor
(INICERC), Bucurestl

PETCU,'Valerlu
Plastic moments in reinforced-concrete continuous girders
built-in at their ends. Studil cere rec! apl 13 no.l.-151-173
,62.
1. Institutul de cercetari in corstructi4l al economis constructi-
i1or, Bucuresti.

PETCU, V.
"Oblique excentric conpression and oblique flexion of reinforced
concrete" by M. S. Toryanik. Reviewed ty V.Petcu. Studil cerc
mac apl. 13 no.1:255-256 162.

RUANP Stefan; %IUTU, Sandu; FMU, Valeriu.__
Breaking points for statically Indeterminate beams of variable cross
section. Studii cerc mec apl, 12 n0.5:949-958 161.
1. Hembru corespondent al, Academiei R.P.R. (for Balan). 2. Institutul
de constructii, Bucuresti (for Rautu). 3. Institutul do cercetari in
constructii si economia constructiiler (INCERO, Bucuresti (for Petcu).

PETCULESCU) Ion; DIXI'lT1,SCU, Const.
In support of constructors' efforte. Constr Buc 14 no.651:3
30 Je 162.

L ~ - ~ I, ~- - : - - - - . z- - .
GUTU, Constantin; PETCUM,,Mihai,- SOCI, Antoarieta
Determining damages provoked by intorruption of electric power
supply. Studii cere enotget 11 no.4:613-625 161.

PETE, 0.,; ZUGRAVESCU, F.3h.; SANDULESCJ~ P.
Determining oxyg-m *.races in ga3es and liquids. R,-.v ~tn
petr 15 no.12:"59-762 D 164.

PARHON, C. I., Academician; POTOP, I.; BABES, A.; PETERA, I.; JUVINA, B.;
FMIX, B.
Morphological and biochemical studies of experimental cancer In
tb.vmectomized rate. Bul. stint., sect. med. 8 no.2:499-515 Apr-
June 56.
(NE)PLAVS. experimental
eff. of thymectoqr. in rats, morphol. & bioch-!m. study)
(THYMUS, eff. of excision
on develop. of axper. cancer, in rats, morphol. & biochem.
study)

oo
GLIG)i-~E, V., Professor; BACIU, T-r-, IM" GRLILIA11, Ur., MID;
D,LILILESCU, I. I MD; GREMI.,-ii1EV, I., I'M; FI,0RI!!L, E., MD;
St., :'
3 -jJA:I) Z; SAVA) E., 1~11D.; TIViTLA2 P. , MD; LAPUL'Al"',
H)spital attendant; Pi~-LEI'iuj N. , MD.
GlW.c II, Cluj (Ciinica a !I-a mocLicala Glu~j) - (for
first five); 2. Pol~yclinic No. 1, Cluj (Policlinica 14r. 1,
Cluj) - (for next five); 3. Bontidin Precinct (for
Poteanu) .
Bucharest, Vinta Llodlpz~l
Li, No 8, 15 Apr 63, pp 511-518.
11-Tho Polo of Gort.,iin Occapat~owd Factors In the Aotionathc rely
of Ulcerous Diseases of Tractor Operators and Car Drivers."

PETEAITU . Vas i I e
Convex sets which admit caru.-loii secant!3. CorruiAcarile AR 13 ro:
9:765-767 s 163.
1. Academia R.F.R., Filiala Cluj, Irstitutul --ic calcul.
Comunicare prezentata de acau-'emician T.Popov-lciu.

F~.IT:ANUI Vaf:llvp
Planning *!%,: S' ~~ " n ~, . . . .
1 . C cm p! i t i np I n ~ ' ~ -, -, *- e , " I u ~', .

LUWIK, S.; SZYMCZYK, W-, (WarS2aWR);,PSTRCKI,.-C-, (Rzeszow)
Statistical aaS17818 of spinal fractures with paral7si#-
Chir. nars. ruchu 21 no.7:685-693 1956.
1. Zaklad Ur&2owo-OrtopedyczzW I.D. I S.K.L. Szpital Miejski
Ur 4. Warszawa. Swierciewskiago 67.
(SPINE, fractures,
causing paralysis (Pol))
(PARKLYSIS, etiology and pathogenesis,
spinal fract. (Pol))

PETEJ, Stjepan (Beograd, Koce Kapetana 12)
Towing the sea-going cargo "Circle" from Belgrade to Prahovo. BrodarEtvo 3
0
no. 5/6:220-223 0 59 - Pr 60.

PETEK, Peter
Mathematical Flympiad in Wroclaw, 1963. Obz mat fix
10 no.3 t134-135 F 16.3, .

PETEIA, RYszard
Magnitudes characterizing the gas generating process in
air-steam blasts. Problemy proj hut maszyn 11 no.7:205-212
Jl 163.
1. Politechnika Slaska, Gliwice.