SCIENTIFIC ABSTRACT A. DOBRACZYNSKI - V.P. DOBREGO

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000410610010-8
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 13, 2000
• Sequence Number: 10
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

What Can be Produ ced (Cont.) PoL/3268
K. Radziwill,- Master in Science, Tech. Ed.; A. Urbanicki.
PURPOSE: This book is Intended for chemists and equipment
designers
In the plastics Industry. It will be of Interest to
students of
the plastics industry.
COVFMGE-. This book, one of a series on the plastics
industry, is
divided into two parts. The first part discusses the
classifi-
cation of plastics', methods of.production, and the most
common
uses of the end-products. The basic properties of individual
plastics are given In tabular form along with testing
methods.
The second part contain6 a general discussion of all known
methods of processing plastics, themoplqstics, and thermo-
setting plastics. The design, constructlon~ and parts of
processing machines are-described. The techniques of dyeing,
metallization, machining, and welding of plastics are also
treated, A listing of terminology used in the plastics
industry
is Included'. A table includes the trade names and
producers of
major plastics, No references are given.
Card 2/ 8

What Can Be Produced (Cont.) PoL/3268
TABLE OF CONTENTS:
I. Introduction 7
U. The Various Plastics and Methods of Producing Them
11
1.
Basic concepts and classification of plastics
11
2.
Polycondensates
19
Phenolic resins
19
'Aminoplasts
29
Polyester
resins
39
Polyamides
49
Silicones
54
3. Polymerized plastics
6o
Polyethylene
6o
Polyvinyl chloride
65
Vinyl polyoctane
70
Polystyrene
72
Methyl polymethaerylate
76
Card 3/8

What
Can Be Produced (Cont.) PoL/3268

4.
Polyadditive plastics
80

Polyurethanes
8o

Epoxy resins
83
5.
Modified materials of natural
origin
89

Cellulose derivatives
89

Galalith (Casein Plastic)
101
III.
Properties of Plastics
103
1.
Basic properties of plastios and
their effect

on processing
103

Plasticity of plastics
io6

Elastic
deform tion and permanent deformation

(rheology)of elastics
108

Mechanical properties of plastics
110

Thermal properties
116

Typical
properties of theftoplastics
121

Solubility and
chemical.properties
126
2.
Methods of testing plastics
132

Classification tests
132

Technological tests
142
Card
4/8,

What Can Be Produced (Cont.) POL/3268

Testing the properties of' plarities in finished products
146
3.
Tabular compilation of the mechanical, electrical,

thermal and chemical properties of plastics
147
IV.
Processing Plastic$
148
1.
Principles of organization of
plants and installations

for processing plastics
148
2.
Processing of thermosetting plastics
l61

Processing phenolic
sol-ding powders
161

Processing Aminoplastic type molding
powders
199
3.
Processing chemically-set resins
2o6

Processing
nonsaturated polyester resins
2o6

Processing epoxy resins
210
4.
Processing thermoplastic materials
218

Injection molding
218

Injection-molding machines
218

Technology of injection
molding
232

Compression molding
250

Compression molding
machines
250

Technique of molding
259
Card
5/8

What Can Be Produced (Cont.) POL/3268

Molding from foils and sheets
269

Molding on rolling'mills
and calendars
279

Molding by dipping and casting
286
V.
Machining of Plastics

295
1.
General remarks
295
2.
Finishing and
cleaning molded objects
295
3.
putting out plaspics
30-0
VI.
Cellular Form Plas~ics
3o8
1.
'Cellular form plastics from
thermosetting resins
310
2.
Cellular form plastics from
thermoplastic resins
311
3.
Examples of the preparation of
foams by the

pressure method
311

Preparation of sponges from
polyvinylehloride

by the pressureless method
312
VII.
Glues
317
1.
Theoretical bases of gluing
319
2.
Advantages and defects of
glued joints
320
Card 6/8

What
Can Be Produeed (Cont.) POL/3268

3.
Principles of good
gluing
322
4.
Technology of glues
322
5.
Technology of gluing
329
6.
Resistance of glued joints
337
VIII.
Metallization of
Plastics
338
1.
Methods of metallizing plastics
338
2.
Uses of
metallized plastics
351
IX.
Preparation of Coatings by the
Flame Spray Method
353
X.
Surface and Buck Dyeing of
Flastico
360
1.
General principles of dyeing
36o
2.
Dyes
J61
Ze
3.
Dyeing of thermosetting plastics
366
4.
Dyeing
thermoplastics
368

9.
Dyeing polyamides
369
4
Dyeing polyethylene
371
7.
Dyeing
polystyrene
371

Ze
Ippoclucecl
0. -bj~ej
ac
O'bel2it2e 'n0cl-tv, C Zleaj,,
we gt"g the eci O.Z 8
-Zct., 12D. Co2ox. a8tI
ar7cl pu 0t Ca
al pleat
112 tel7e t., 01, op Ica
he p OJ78 pza
~f Of th stfca
of e Nost 37,,)
ARAX Of the IPIQatIC3 AP021tabt 374
ZI bpaz,3, Nost -ropop (A,,.ZeP8ecj 2,ez7n8 ~376
ca2v 8 Of t "t a2pl, ~e,,2t
Qbett 37?
a vamea 0 Cal 0'
-,Ve,,)
pleat-lea 389
4o1
T~Am
31i e 8
51~0

D09RAGUNSKI, Antani, mgr Inz.
I
A concept of the PcIi.3h shtpbu-'Iding industry in the
development of
ship power plants. Blul techn Cegielski 5s2','.-24
Special issue `61.

DOBRACZYNSKI, Aleksander
The industry of equipment a~d machines for the
production of plastics in
France. Polimery tworzywa wieloczast 7 no.2$52-56 F 162
1. Instytut Tworzyw Sztucznych., Warszawa,

DOBRAGZYNSKI, Antoni, pgr,inz.
Development prospects of the production of ship
engines. Bud
okretowe Warszawa 7 no.8:247-248 Ak 162.

DOBRACZYBSXI, Antoni, mgr ins.
International congresses of internal combustion engine
builders.
Bud okrotows Warszawa 8 no.82272-273,274 Ag 163o
1. ZJednoczenie Przowslu Okratowego, Warszawa.

DCBRACZYNSKI, S.
POLAND
"Lecturing and Training Activities in the Institute of
MetaUurgy During the Last
Ten Years," by S. DOBRACZYNSKI; Prace Instytutow Ministerstwa
Hutnictwa., Nos. 2-4, 1955.

I tube I
?v IV 0-0 Of

00

blonartlem of Zkonsaft MW Tsvis, 02khe in the
Wead.
of
004 3
1 Both Mailing W4MbW at M*Mk (in Russian) N.

N.
Dobrakboky. Avtopenave Dela (Welding), Svpt.

0019
1948. p. 14-19.

004
Diem" the physicoebemicall baw of the regula-
ti
o
n
f th
iti
f th
fl
d th

o
o
on o
e
e c
mpos
ame an
e gas
I
t
k
d
f
l
id
d
h
l
d
i

043
n
e
st
on o
c
e
r ox
es
ementp an
t
ur
ng
iron welding of metati. A series of formulas are

proposed for
calculation of such reactions

.

S a - S L A METALLURGICAL UVERATust CLASUFOCATM
tie
goo. OWL-T
Napo %1n 11"
A low" -A I MAP* MAP ami 009 st""CM" 114181 (ON a" LS1
.. a S a
b U NO UP lot ;-4, To
001"S 0 o o 0 * o o * 9 : 1000 00
.09000 04 0 : *a *Goo 0 0 k'* 0
00
,,g 's-01,68 Wo 060**0

. 11
.1 DOBBANSKI, Z.
In memoriam Dr. Josef Maleko Chironarztruchu ortop. polska 26
no.2:
109-3-U 161.
(OBITUARIES)

DOBUNSZY,Yj, Iasz1o -
-17-- A procean for turning rounding-off of great radiun end.
no.l.-33-31+ Ja 160o
Gel)

DOBRANSZKY. Laszlo
Me use of adjustable br=pero at chuck work. pieces&
Gep 12 n0-1:34
A 160,

DOM WrIT, G.
Agfacolor B333; G334. P. 15. Vol. 2, No. 1 Jan. 10,56.
KEEP M HANGTECHIKAL
Budapest, Hungary.
SOURCE: East European List, (EE") Library of Congress
Vol. 6, No. 1
January 1956.

BARRA, Tamas.- BERTY, Imre; DOBRANYI, Gaza; SCHALK.,
Ervin; SMAN, Oszkar
Hungarian remarks about sensitometric
standardization. Ft. 2.
Kep hang 5 no-4-.106-107 Ag 159.
1, 4Kep- as Hangtechnika" aserkeazto bizottsagi tagja
(for Bama,
BSrty, ftiMan).
. 7 11
k
- . Z

BARNA, Tamael BERTYt Imre; -DQBRUUI,-Gm; SCHALK, Ervin;
SUMAN, OsZkar
Hungarian remarks on sensitometrio standardization. Pt.
3. Kep hang
5 no.5il32-133 0 159.
1. Hunnia Filmatudio; "Kep- es Hangtechnika" szerkeszto
bizottsagi
tagja (for Barna). 2. FORTE Fotokemial. Kutato Labor
Vac; "Kep- es
Hangtoohnika" ozorkeazto bizottsagi tagja (for BertyL
3. Magyar
Filmlaboratorium (for Dobranyi). 4. Hiradastechnikai
Kutato Intezet
(for Sohalk). 5. Magyar Tudomanyos Akademia Kozponti
Kemial Kutato
Intezete; "Kep- so Hangtechnika" szerkeazto bizott6agi
tagja (for
Sziman).

DOBRANYI, Geza; DOBOS, Jozsefne; POLSZTER, Akos
I
Changing the color equilibrium of color reversible
films by applying
vario~zs developing agents. Kep hang 6 no.lsl-4 F 160.
1. Magyar Filmlaboratorium.

for, qN-Z, *r f ----- -
noll, i) ot long vatintio,
lerflUshis uport pblitcal prop
z;,"L I lj~~l thiiv- M. Curie-SAlodouska, 1953, S.
t - -'5F-7-7ir-T7,i-R-zw hyj" pi 01'etties of rgila ivvni carried cat
n'
e, ~mt, T,4 36 yeani of ferWising, with maimia, miner('d
11 -k L,
and timc. I'lic rc;sults obcamed q ow . higher (O-j~-
h-ot- c-it-I i- th. th;~, ir, th~
4 ( FK3rmly ii(.,l of m tx. capillary ia~iiture
ol-rvt7d Lr plots truated witli manure or miutral
;ni- thu pliv~ have showii a h,~hc-. n.is,Lr
-Intin;~ t1ir v~,,L,tzti~n ~~7,ison. P,eel'vctaof vA, 3-yrarand
~p so,~n~, i yat~,n* on th,, flil ouffitim,s ,my al.*io
of Jo,g~O,,tjnnr..j
iNnrq,, I,,. Ow . ~rv ),, 4
by UOfll:ttCd JAIA.1 .1 tM'

ta pn-mozmly
~':ttd SL nbmli4ld 1.4941j" Unsp, Af. CWriv-SAkdt.WlA;'. i93
41 tht dvi~tmlnit4 ti ot x' .10 " jWrmv4
ability.
)cs& *its roeft. X'i% oefinA by W14cy'm imnvu!al
c(*fl K !A
z~ - 211 V. wbem Q N -Abu vx4.- of, water in c.r.'- I t inc, flowing
0'rough th( Sample, i tho- P:"3-lv drop Ar4v.'s t1r. SaIllikk.. and'.
'F t4c vrGr--icctjvnaj at" of ine *iample in, ,sq. cin. Thp apporavis
of a cylirder'3 whkh a erusg4nt bt,.%4 s-t -A;%trr la main.
"n
jalnul,'vdti, xmtbrr rnmtAt t;yljii&r conk%lWnp ttit plc (cut ~~I*
ri,;l %visthmA distmbim,; it-A a0muivn) %V~J%itivd it e1wil
'r,- na and a for mcnsvriug'Xho vplunte of the
atc. A woRk ilotiminatioa-lu-ts i'va -. 1.10 5 hr, (tv im-,
Ised to
~,,s.tduct mrre tfsts mirsullunco,W
(Ty,

BIMIA, Tamas; BERTY, Imre; DOBRAN,Yl,_Geza; SUMAN,
Oszkar; SAMK, Ervin
Hungarian remarks about sensitometric standardization.
Pt. 1.
Kep hang 5 no.3:77-78 Je 159.
1. Hunnia Filmstuao; *-Kep- es Hangtoohnika" szerkeszto
bizattsagi
Ja (for BarnO.. 2. FORTS Fotokemiai Kutato Labor Vac;
"Kep- es
~
ttechnika" szorkessto bizottsagi tagja (for Bertyl. ~.
Magyar
mla~-ratoriup (TO'I* Dobranyi). 4. Hiradastechnikai
Kutato Iniezet
(for Schalk 0 ~. Magyar Tudomanyos Akademia Kozponti
Kemiai. Kutato
Inteiete,-." ep- es Hangtechnika" szerkeatt,o
bizottsagi tagja (for
sspime

CZLt0-HOSLOVAJaA/OrgELnic Chemistry - Synthetic Organic
ChemistZ7- G-2
Abe Jow: Referat Zbur-Kbildyn.. No 5,, 195%14429.
Author Dobras Jaropl4y~ Marban Jiri, Krejci Jiri, Pirkl
Jaromir
Inst
Title Arylation by Means of Diazonium Sal-te. II. Study
of the Effects
of Catalysts., Temperature and Structure of Diazonium Salt
on the Course of Its Interaction with 4-Sul-rocinnamic
Acid.
Orig Pab: Chem. listy, 1957, 51, Wo 3, 463-469; Sb.
chekhosl. khim.
rabot, 1957, 22, No 5, 1473-1481-
Abstract: On interaction of y-xO2C6W2Cl(I) with
4-sulfocinnamic
acid (II), in aqueous nedium, there is formed. the
k-nitro-
stilbene-41-sulfonate of sodium (crystals from water)
which
on reduction with Fe in a neutral medium gives
4-aminostil-
bene-41-sulfonic acid (crystals from aq"Ous C5H5N)-
AnaJ.O-
gously from inner salt of 2-sulfo-4-nitkopfienyl
diazonium,
Card 1/4

CZECHOSLOVAKIA/Organic Chemistry - Synthetic Organic
Chemistry. G-2
Abs Jour: Referat Zhur-Fhimlya, No 5, 1958, 14429.
(M) and 11, there is formed 4-nitrostilbene-2,41-disul-
fonie acid which was reduced, without isolation., in
the re-
action mixture with Fe to
4-aminostilbene-2,41-disulfonic
acid. From the latterj, after diazotation and coupling
with beta-naphthol, was prepared the tetrabydrate of the
disodium salt of stilbene-4-azo- P
-naghthoi-2,4*-disulfonic
acid. In addition to the noxmELl products of arylation
there
are formed on interaction of I or III with 1-1
unidentified
products of farther conversions vhich have been
detected by
paper cbromatography. A study was made of the effects of
tem
perature, catalysts and substituents in the molecule of
the diazonium salt, on the course of its reaction with
II.
The experiments were carried out in aqueous medium, in
the
presence of excess CH~COOXa, in sealed apparatus. Yields
of individual reactiods were evaluated on the basis of
the
Card 2/4

&ZECHOSLOVAKEA/Organic Chemistry - Synthetic Organic
Chemistxy. G-2
Abs Jou--: Referat Zhur-MmIya, No 5$ 1938s 14429o
amount of liberated C02. Experiments were conducted
with 1,"
C6H N291 and hydrochloric diazonium, salts prepaxed
from
0 o-,, meta- and pars-isomers 6f cUoraniltne,
oxalylamino-
aniLine, aniline sul-Ponic acid, anisidine,
toluidine, ni-
traniline and aminobenzoic acid. It was found that
III is
more active thnn I. Effect of elevated tenperature is
ap-
parent only in the case of diazonium. salts of low
reactivi-
ty. Among the catAlysts that were used (CuO, CuC12
and Cu2
C12) the beat was found to be CuC12- Yields ofL the
products
of reaction of II with p-substituted bydrochloric
diazonium
salts are the highest and those with the
m-derivatives are
the lowest. A beneficial effect on the formation of
stil-
bene derivatives, in the case of p-substituted
hydrochloric
diazonium. salts, is produced by electropositive as
well as
by some electronegative substituents. NO 2- and the
COOH-
Card 3/4

. . czWMMDVAKIA/Org&nie Chemistry - Synthetic Organic
Chemistry. G-2
Abe Jour: Referat Zhur-lhimiyap No 5, 1958, 14429.
group in the para position of the diazonium salt
produce
a detrimental effect* Previous cominica ion see Chem.
Usty, 1952., 46., 277.
Card : 4/4

N=IiSDN# 'I.M.1 - DOBRAY.Ap T.Te.; YASHZK, Kh.N.
Virological and serological features of the
influenza outbreak in
Kl~wkov and districts of Kharkov Province in the
first quarter of
1959. Vop. virus. 5 no. 6;751 N-D 160. (NIRA 14:4)
(KMOV PROVIRCE-INnUENZA)

ACC NN
AP602158,, (N) SOURCE CODE: UR/0402/66/0001003/03T2/03T2
AUDiOR: Nakhinson, I. M.; Dobraya, T. Ye.; Yashek, Kh. N.
ORG: Virology Laboratory, Kharkov Regional Epidemiological Station
(Virusologiche-
skaya laboratoriya Khar'khovskoy oblastnoy eanepidstantsiya)
TITLE: Influenza viruses identified at the Virology Laboratory of
the Kharkov
Regional Epidemiological Station in 1965
SOURCE.- Voprosy virusologii, no. 3, 1966, 372
TOPIC TAGS: virology, influenza virus A2 virus, B virus I(ItZUS
H-1dr-OA-00Y
ABSTRACT:
Eleven strains of infliienza virus were isolated from living and dead
tissues. Ten of these were type A2 and one, type Bviruses. TheV were
successfully freed from the tissue culture cello by, txypskdzation,
while
use of hydrocortiaone was ineffective for isolating viruses.
[W,A. 50; CBE No. 10
SUB CODE: 06/ SUBM DATE: none/
Card ili

AVDIYZVO Tas; _ T-AXOIF#I-M- -
fire safety has been increased. Pozh. dolo 4 no. 70~-9
-T1 158.
(MIRA MB)
(Footorien-Tires and fire prevention)

POIMD/Humn andAnimal Physiology (Normnl and Pathological).
T-8
The Liver.
Abs Jour : Rof Zhur - Biol,, No 11, 1958, 5OW
Author : Dobrazanski., zaislaw
Inst
Title Erythrocyte,ReGistibility in Certain Liver Diseases.
Orig Pub Arch. imm=ol. i terap. diswindczoj 1956 (1957), 4,
93-
114.
Abstract The raximum of erythrocyte resistibility (ER) to a
hypoto-
nic NaCl solution increased, yet the minimum did not cban-
ge in caee8 of infectious hepatitis and of other liver
diseases accompanied by impairments of the parencbyna.
ER minimum rose and ER mximum remained the same with re-
gard to saponins. These ER changes were correlated to the
degree of parenchym impairment, They did not, however,
depend upon cholesterol and billrubin contents of the sera.
Apparently, some kind of a substance appears in the blood
Card 1/1 serum which changes ER.
- 72 -

D0BRE,&nnsLantIn-
How we Rumanians are helping the state agricultural
units
in fulfilling their competitive obligations. Munca
sindic 7
no.8t29-32 Ag 163.
1. Presedintele Consiliului local al
Sindicatelor-Caracal,
reg. Oltenia.

NEGOITA., C., conf.; TROSC, Viorica, dr.; DOERE,
D., dr.
Idiopathic pulmonary hemoaiderosiss an
immuno-allergic disease?
Med. intern. 15 no.9:1085-1089 S 163.
1. Lucrare efectuata in Clinica I medicala, I,M,F,
Iasi.
(LUNG DISEASES) (BMOSIDEROSIS) (ALLERGY)

MORLOVA, Irina; URSU, Teodora; DOME, Florica
(Bucurest!)
Histological data on the cancer of grapevine (Vitis
vinifera L.)
Natura Biologle 16 no.5:74-78 8-0 164.

DM-
Debref G. G'"" "Analysio'ef Systems of Mining One of the
Group of Ore Deposits in
the R;;a"'Peoplets Republic.* Kin Higher Education MM, Moscow
Mining
Inst-Azieni 1. V. Stalifij, Moscow, 1955 (Dissertation for
Degree of Candidate
Of Technical-Sciences).
SO: Knizhnaya Letopiall No. 23# Moscow, Jurte. 1955, ppe
87-104e

DOBREJV Gh.
Supporting the production opganization with fu-U knowledge of
t-he case.
Munaa sindic 6 no,,9:31-33 a 162.
.1. iecretar al comitetului aindicatului Uzinele Grivita
ftsie,,
Bacuresti.

DOBIM) Mop ingo; MUSA, C*p ing0j SLIVII&CU, me,
inge,
Aspect& of the coal industry in Poland recorded
during the(
visit of a group of ."Dian specialists. Rev Min
13 .
no*9t/[phone].
1

DOBRE. Gh .i g., aandidat-in atilnte tehnice
--, -"'q
Improving qua4ty indexes in.prooesoing qra deposits by a
JiAicious
organizatibn of waste sorting from~tha mining mass. -Rev
min 15 no.9s
433-438 S 164.

WPM / TAIAI( O/M
AP63-
ACC NR,
2ng SOURCE CODS; RU1001BI6310001009105101051
AUTHOR. Hajdu, Iosif Kovats, Ladislau; Nis9la, Petre- Dobre,
Ioan
ORG: none
TITLE: Now formula for determining cre2p~ng elongation
SOURCE: Constructia do masini, no. 9, 1~5, 510-515
TOPIC TAGS: elongation, steel, creep, metal property
ABSTRACT: The authors describe a novol method for the
determination of the specific
crooping elongation of soft stools ancl compare, the results
obtained through this
method with those mnasured in the conventional method. The
now testing process allo
the obtaining of measurements equivalent to 500 hours'
duration in only 50 hours of
testinge Ori,* art. hast 9 figures, 5 formulas and 4 tables.
fRazed on-authors'
Eng. Absti. 5;z�~
SUB CODEt 'n / SUM DATE: none / ORIG REFt 003 / SOV REFt 003
OTH PXM 009
J D
ir-4 1116(

BABEU, Tiberiu, ing.; DOME, lonal, ing.;
BOGDANESCU, Ioan, ing.
Experimental study of the rugosity variation of
cylinders
in the M-59A engines during their running-in after
overhauls.
Rev transport 12 no.2:49-54 F 165.

ISTRATI, G.; SZEGLI, Lucia; CIUFECO, C.;
FILIPESCO, S.; DOERE, Maria
Sereny test produced by certain Salmonel-lae.
Arch, Roum.
path. exp. microbiol. 22 no.1:101-107 Mr 163-
1
1
(KERATOCONTUNCTIVITIS,' (CONJUNCTIVITIS)
(SAIMONELLA INFECTIONS, anm)

VODA, G. Viorel; DUMITRESCUj Flores I.;
STRATESCU, Ion, student;
IONESCU-TIU, C.; prof. (Merei Buzau); POPESCU,
Eleodor (Tr. Severin); GHEORGHIU, D.R.
(Timisoara); GRIGORE,
Viorel (Oroftiana).
Exercises and problems proposed for grades 5-8.
Gaz mat B
14 no.12:741-743 D 163.

D013RE Nelu 1. (Meraij, Buzau); MUNTEM, I-,' BUICLIU,
Gh.;
`-~~~Iup T. (Ploie6ti); STRATESCUP Ion; 1014ESCU-Tius
~,.; TOMESCUO Ion (Bacureati); MIRZANO D., prof.
(Bujoreni,
I Men) V I
Exoroieen and problems proposed for grades 5-8. Gas mat
B 15 no. 5:227-230 May 164.
1. -

-RQBRE, Noli _(Buzau) - CHITEI, Gh.A. (Deva); CAPITAN, Gh.
I., prof. (Anina)j-
C~ITGORESCU, D. Nicolas (Hirsova); NISTCRY Gh.V. (Buzau);
1-UHALASCU,
D., prof. (Pitesti); VELE9CU, I. (Pitesti); DUMITRIU, C.
(Foesani);
SIMON, Petro (Ti~gu Kires); BAERA, B., prof. (Pauneati);
COJOGARU,
Ion (Crai.ova)
Exercises and problems proposed for grades 5-8. Gaz mat B
16 no.l:
39-42 Ja 165.

DOBRES PAU*s chimist; TOADF.R., Ions ing.; STAFIE, Ion,
ing.
Fight against weeds on railroado",by Cing.] Dem. Urma.
Reviewed
by Paula Dobres Ion Toaders Ion Stafie. Rev cailor fer 10
no.10i
566 0 162i
1. Sef laborator Institutul do Corcetari pontru
Transporturi si
Telecomunioatii (for Dobre). 2. Inginer pririoipal
plantatii si
amnajarea zonei Dir.L. (for Toader). 3. Inginer principal
serviciul
tehnic Dir. L. (for Stafie).

FAIBIS, A.; IONXSGU, C.; K&RINOBBSCU, C.; SARAGIA. V.
Additions to the study of the mechanism@ of localizing
visceral
disturbances In the course of neuroses. Note 1t
Particularities
of visceral disturbances of animals with double
stereotypy (sali-
vatory and wspiratory] in the course of a neurosis
provoked by
overstraining the digestive projection of the visceral
analyser.
Studii cere.fisiol. 4 n0.3.1301-311 159. (UAI 915)
(VISCERA) (NXUROSBS) (SALIVARY GLANDS) (RISPIRATORT
ORGANS)
(DIGISTION)

MZAII, D SAi,.OILA, Gh. V.,
haslui); WRIT'- T- - (Hale--isuzau); !X. A, S-L-31-i -n
GRIIGOIGISCU, D. Lcoia irsova, DoLrujO; AI,UJ,,-U, 1, (FagaraB)
GROEISCU; T., prof. (Arad); STAI*ICIJ, LIMP. (Bucu----;ti);
17--'AL;SU, 1.4
(Garanselyis)
Exercises arid problems fcr grades 5-8. Gaz mat B 16
nc),"~~,91-93,
F 165.

BADISCU, Alexandru; CIIIOSA, L.;,,DMRB. T.; HLULICA,
I.; SCARIME, T.
Pharmacological proportion of an osime, the chloride of
phouacyl-
cudes Iv r1dintum. Note 1: GardloTascular action,
Studit oerc,
fiziols 4 no,3:321-334 '5~. (MI q.-5j%
(Oxm"s) (PMLCYLPMMIIFIUK CHwItIDN)
(CARDTAOVASCULILR STSTIN)

Budbar"t, 1-~!Ita ds Goodomia a!
Or~tn!zeroa Tcr!t4r1uhil
Val v:, NO 2-,-1Tr7-
2. ;Report on the Cozple~.!*-% or
C421100tITIzatiOn and the
cnrgmitattan of Agriculture
5-41-ltted t4 th. !:,xtra-
ardLnarl Session of the Orand Nrti=Al
A394mbly At the
Session of 27 April 19i-',' Gh. - pp
3-32.
2. "The, Old 3mode tlo TrIAngulatlDn
Nwt~rk In the WeStOrD
Pr t of the Count-y Caarriod. out 1=
Various PIrmning
Systems amd the Possibility or Its
7.ntacratior. In th
Stat 6 Goo dez to Notw*rk ' x~g A. M
PA. , ingr 1. ZkYARZA,
and imer T. LIPAY of tho t mr-Fo -r
in o; n-turror
Territo.7 Nentrul dOurga
TM-s3sam; Pp 33-44.
3- *Tho few X.P.B. 21/182S
Photoacreal camera in Proauctioc
0. MARTON Candl-dato In Solent$
(Csndidjkt in Stlinct)
;;~- zwPimu; Pp
"The .11 to "'Itj or Adapting the Mw
for the OrganItatIc
of Torri r7, JW M. ANASTA3rU and J=gr
1. CM.IAC;
7p sj,-59~4 -- --
plagmas f
Orgunl%stlon or the
n Su=
_port oL-,tne Soclalls. Agrioultmral
Units ', ~:mrv A. IMODRU- pp 6C-E4.
A".
6. 'The so-dot or * Iftar 3. AVP.A.31
Cent or for the Or
nization of TorrItory,
Bmcbxroata-;-:37i5768-.------
iCSO: 2000-X

DOBREAt A., ing.
Establishment of production centers., an important
element in
planning the organization of the land exploitation
in the
socialist agricultural units. Rev goodezie 6
no.405-66
162.
1. Consiliul Superior al Agriculturii.

POPESCUt N., ing.~_DOBREA,_,A., ing.
Land organization, main economio.ahd organizational manp of
strengthening the socialAtt agriqultural enterprises.
Rav'gaodezie 8 no. 3s2,142 164.1
1. Higher Council of Agriculture.

DEFOUR., D.,, arh.; DOBREA, A., Ing.
.Land organization. Rev geodezIe 9
no.1:46-57 165.
1. Higher Council of Agriculture.

DOBREANU, E.% MANOLACHE, C.1 PUSCARIU, V.
~7-71'- -- - '
New species of phreatic Amphipoda in Rumania, In French.p.
103,
REVUE DE BIOLOGIE, JOURNAL OF BIOLOGY. (Academia Republicii
Populare Romine
Bucuresti.
Vol. 1. No. 1, 1956
SOURCE! East European List (EEAL) Library of
Congress, Vol. 6. No. 1, January 1957

"OSTI-N, A., ing.; DOBTEAU, I.
Tnermatic apparatus for length Matrolcgia
api 11 no. 5%208-213 1,~r 16-4.

Z)O,d( '2EA
/~W/ A C-.
AUTHOR:
it/007/62/013/007/001/001
D015/D105
Ilihai, G., Dohreaw., Chemical Engineer, Chief Researcher
(Bucharest)
TITLI;: Anticorrosive oils and greases in maritime and in humid
tropical
climates
PERIODICAL: Petrel si Gaze, v. 13, no. 7) 1962, 317 - 321
71-'.ZT: The article deals with oils and greases as means of
protecting metals,
mainly ferroalloys) against corrosion caused by hwiLidity and salt
water spray
in tropical regions. Research conducted by the Institutul do
cercot~ri electro-
tehnice (Electrotechnical Research Institute) in Bucharest and the
Institu'tul do
cercetiri "Petrochid' ("Petrochim!' Research Institute) in Ploiesti,
was based
on the use of consistent oils and greases activated by anticorro'sive
agents.
Domestic products wore compared to various efficient foreign
articles. The anti-
corrosive agents consisted of barium and sodium sulfonates with a
petroleum oil
basis. Sheet iron samples protected by domestic and imported oils and
greases
were sub4ected to tests in salt water spray and in hot-huitid cl
imates. Salt
e,-
Card 1/3

Anticorrosive oils and Sxreas~s
't/007/62/013/007/001/001
D015/DlOO'-'
water spray tests-were coaducted in the ICET cloud *chamber,
the-spray being
produced by an aqueou:* solution of 3,Z sodium chloride. flumidi.ty-
tests were
conducted in Weiss'climate chambers, the test-samples being
subjected to a
temperature of 409C T 20C and a relative humidity of 95 - 9a%. AR
11, All 12
and ALII 13 domestic oils and imported 1121, oil as well as Rwianian
U 100 grease
activated by anticorrosive agents said imported grease 11311 met
ICUT;Irequirements
based on 60 salt water-spray tests and 100 temperature and humidity
tests. The
author favors the use of oil and grease with additives and
rocomAeuds the
appifeation of AR 12 oil and U 100 activated grease on
machines'expoked to
tropical countries. Since gre4ses are easily removed during,
operation or sto-
rage, greased parts should especially be protected against friction
or rain.
There are 2 fiZures and .3 tables. The most izWortant
English-language re-
ferences given in Rw=Lian read as follows: A.H. Roebuck: Corrosion
and ad-
sorption studies based on the use of anticorrosive sulfonates;
Corrosion, 13, -
no. 11, 1957, 55 and Baker and Tismann; Polar-type rust inhibitors.
I.E.C. 40,
no. 12, 1948, 2338.
Card 2/3

R/007/62/013/007/001/001
!knticorrosive oils and greases ...... D015/D105
AS30CIATIOAX: Institutul de carcetari electrotehnice
(Electrotechnical Re-.
search Institute)
SUMaTTIM: February 24, 1962
Card 3/.3

DOBREANU, Mihai G., ing. chimist
Corrosion inhibiting oils-.and greases for saline and
mAist
tropical climates. Petrol"ai gaze 13 no,7:317-321 J1
1. Cercetator principal la Institutul de cerecetari el
ctrotehnicee,

DOBREMILTE E I-MOLACREt C.
Contribution to the knowledge of the Psyllidae of Rmania;
Psyll.odes-Aphalarinae.
In French. p. 123.
REVUE DE DIOLOGIE. JOURNAL OF BIOLOGY. (Academia
Republicii Popilare Romine)
8uctiresti, Runania. Vol. 3, no. 1, 1958.
Month~ly List of East European Accessions (EEAI) 1C, Vol.
8, no. 7, July 1959.
Uncl.

- - DOBREANU, E.; MANOLACHE, C.
New contributions to the knowledge of Psylla
Psylloidea-Triotinas.
Rev biol 4 no.2:279-299 139. (BUI 9; 8)
1, Membre correspondant do I'Academie de la R.P.R. (for
Manolache).
2. Secretaire de redaction de la Revue do Biologie (for
Dobreanu)
(RUMANIA--PSYLLIDS)

DOBRWU 9 ; MANOIACHE, 0.
Studio# on the copulative organ of oome speoien of
Poylla (111t7loideap
Triosinae and Aphalaridas). Rev biol 5 no.1/2187-,99 160.
(EFAI 10: 9)
1. Comite do redaction, REVUE DE BIOLOGIE, secretaire de
la redaction
(for Dobreanu). 2.Membre correspondant de llAcademie do
la R.P.R.
(for Mano2ache). -
(Jumping plant lice) (Psylla)

DOBREMp B.
NIFam. Papilionidas (lApid). Fauna of Runania.
Insect&." Vol. 11.
Reviewed by Es Dobreanu, Rev biol 7 no.2:295-296 162.

DOBREANU Ecaterina; XANOLACHE, C.
Contributions to the knowledge of Psyllidae
(Homoptera-
Psylloidea) of Rumania. Studii cerc biol anim. 14
no.132
299-313 162,
1. Membru corespondent al Academiai, R.P.R., membru
al Comi-
tetului do redactie si redactor responsabil
adjunct, "Studii
si coreetari do biologie; Seria biologie animals"
(for
Manolacho).

GEORGESCU p Miron; DOBRWIU-ENESCU, Vio ca
- -igl-
Hemodynamic oharaoteristics of athletes who-play
competitive hand
ban and volley-ball. Stud. cercet. mad. intern. 2
no.1:91-98 161.
(SPORTS) (BLOOD CIRCULATION) (BLOOD PRESSURE)

POPESCU) Iuliu- ?AMFIRESCU-GHEORGHIU Marcela;
DOBREMW.FlM=j Viorlov%f
AH047"t.8tefania; HARNAGU, P.
Changes in serum glutathione in cardiac insufficiency.
Stud. cercet.
mod. intern. 2 no.3:261-276 161.
I (HURT FAILURLO CONGESTIVE b1bod)
(GLUTATHION&blood)
r

DOBREANU-ENESCU, Viorica; TEOWKINIj Sandas- GEORGISCU,
Mircea
77-
- - -----
--
,-I
4r -
Hemodynamic aspec'ts of hypertension of renal origin.
Stud. cercet.
mod-. intern. 2 no.4:511-518 161.
(HYPERTMIONj RENAL diagnosis) (HEART physiology)
(BLOOD CIROUIATION)
I

DaBESM-EMCU, Viorica
New data concerning the nervous regulation of
cardiovascular function.
Stud* cercet, mod. intern. 2 no.5:619-.629 161.
NERVOUS SYSTEM pbysiology)
CARDIOVASCULAR SYSTEM pbysiology)
i

I
STEINBACH, M.; DOBREANU-ENESCU, Viorica; CHITESCU, Elena;
MARCUS, K.; IOTA, C. G.
Treatment of arterial lVpertension with heparin. Stud.
oercet. mod.
intern. 2 no.5:671-679 161.
(EYPERTENSION therapy) (HEPARIN therapy)

DOBR&W-E RUNCAN, V.; TEODOHINI, sanda; NOLNER, C.
Correlations between the peripheral use of oxygen and
the systemic
hemodynamic picture in pationto.wlth chronic
hepatitis and post-
hepatitis cirrhosis. Stud. corcet. med. intern. 3
no.1:51-64
162o
(WATITIS complications) (LIVER CIRRHOSIS
complications)
(BLOOD PRESS RE) (BLOOD GIRGUIATION)
(HEART physiology) (OXYGEN blood)

GEORGESCU, Miron; DOBRSANU-ENESGUq Viorica; FOTESCU,
Dorin; IONEEZ0, Tr.
Hemodynamio aspeots of performing football players, Stud.
cercet. m d.
intern. 3 no.31391-401 16Z. '
(CARDIOVASCULAR SYSTEM physiology) (SPORTS)
(ECERTION physiology) (ELECTROCARDIOGRAPHY)
(BLOOD CIRGULATION) (OXIMETRY) (BIDOD PRESSURE)

GEORGESCU, Miron; DOBREANU-MWCU, Viorica; TEODORINI,
Sanda; POPESCU, G.;
IOTA I C. G. -
Hypert,ensive regulatory disorders produced in conditions
of mental
and phyaical overstimulation. I' Mechanisms of
hypertensive regulator.V
disorders appearing in performin; athletes. Stud. carcet.
med. intern.
3 no.4005-513 162.
(MRTION) (SPORTS) (EMOTIONS) (HYPERTENSION)
(AUTONOMIC DYSFUNCTION)

GEORGESCU, Hiron; DOBREANU-ENESCU) Viorioa; TEORDORINI,
Sanda; POPESCU, G.;
IOTA$ C.G.
ftertensive regu3atory disorders in conditions of mental
and physical
overstimulation. ' H. Therapeutic results obtained in
this type of
regulatory disorder with guanethidine (ismelin, Ciba).
Stud. cercet.
med. intern. 3 no-41515-523 162.
(EXERTION) (SPORTS) (AUTONOMIC DYSFUNCTION)
(WERTENSION) (GUANETRIDINE)

ZAMFIRMCU-GHEORGHIU,, Marcela; POPESCU, Iuliu;
DOBREANU-ENESCU, Viorica;
TEODORINI., Sanda; GIOBANU, Florins.
Experimental investigations of myocardial activity after
administration
of substances blocking the energetic enzymes. Stud. cercet,
med. intern.
3 no.4:525-547 162.
(ENERGY MABOLISM) (MYOCARDIUM)
(ARDSTABOLITES)

DPBRWU-ENESGU, Viorica, dr.; TEODORINI, Sands, dr.;
MOLNAR, G., dr.
I---------
Reciprocal correlations between cardiopathy on pulmonary
insufficiency.
Mod. intern. 14 no.12:14.11-1419 D 162.
1. Lucrare efectuata in Institutul do medicina interna al
Acad. R.P-R.
(directors acad. N.Gb. Lupu), Bucuresti.
(HEART DISEASES) (RESPIRATORY INSUFFICIENCY)
(HYPERTENSION., PULMONARY) (PULMONARY CIRCULATION)

XJ-9a; VULPF=, Sof1a;
LPFUj N. Gh., acad.; STEINBACH# M.; AWL-.3~FdOff *_Yio
JELEAP Al.; TBODORINI., S4tnda; VXADESGU, C.
I*idence of atherosclerosis among fishermen in the delta
of the
Danube. Stud. cercet. med. intern. 4 ho.1:29-35 16~.
(ARTMOSCLEROSIS) (FISH) (FATS, UNSATUUTED)
(BLOOD CHOLESTEROL) (HYPERTFVSION)

DDBR&M-ENESCU Vioric~a- HARUGEA, P.; TEODOMI, Sands;
MOLNER, 0.
- jp,~
Clinical, hemodynamio and electroeazdipgraphical
effects of prolonged
treatment with guanethidine or with combified
guainethidine and
cyclopenthiazide d:zk hypertensive disease. Stud.
cercet. mod. intern.
4 no.1:57-82 163.
(HrFERTENSION) (GUANETHIDINE) (BENZOTHIADIAZINES)
(DIURETICS) (FIECTROCAMIOGP.APHY) (BLOOD CIFICUIATION)
(BLOOD PRESSURE)

I I .
IOTA, C.G.; GEORGESCU, Miron; Nauu=W&C-U-4 - 'Vik ri c
a;-FOPASCU i Gh. ;
TEODORINI, Sands. .
F4*rtensive disorder in conditions of physical and
mental strain.
III. Research on the reactivity of the autonomic
nervous system in
performing athletes with hypertensive disorders. Stud.
cercet. med.
intern. 4 no.'1:83-92 16#'~
(HYPERTENSION) - (AUTONOMIC DYSFUNCTION) (STRESS)
(EXERTION) (SPORT MFICfNE)

POPESCU, Iullu; ZAMRESCU-GHWRGHIU, Marcela;
DOBREANU-ENESCU, Viorica;
CIOBANU, Florina; HARNAGEA, P.
Contribution to the study of blood pyruvic acid in cardiac
ins~fficiev"C*Y.
Stud..A6rcet. med. intern. 4 no.2:187-188 163.
(HEART FAILURE, CONGESTIVE) (PYRUVATES)
(BLOOD GLTWICAL ANALYSIS)

DOBIMUM-ENWOU. Vioricat TZODORINI, Sends) HARNAGEA, Petra
Treatment with phanyl-propyl-i~phanyl-iwopyl-amine (Segontin
Hoeflbst)
in coronary disease. Stud. canet. mad. intern. 4 no.W43~253 063.
(CORONARY DISEME) (SEGONTIN)

STEINBACH, M.; J20BRW=~NW9,.-ViorIca; MOLNER, C.;
TEODORINI, Sanda;
LAZAROVICI, 14iriam
The lipid biochemical syndrome and vascular
elasticity in
smokers. Stud. cercet. mad. intern. 4 no.1,035-537
163.
(SMOKING) (BLOOD LIPIDS)
(BLOOD CHOLESTEROL) (LIPOPROTEINS)
(CAPILLARr FXSISTANCE) (ELASTIC TISSUE)

DOBREANU-ENESCU, Viorica, dr.; HARIIAGKA, P.1 dr.;
TEODORINI, Sanda, dr.;
MOLNER, C., dr,
Glinical, hemodynamic and electrocardiographical
effects of
lprolonged treatment with guanethidine or with
guanothidine-
)-cyclopenthiazide in hypertensive disease. Mad
inter 15 no. 5:
61%-624 MY 163.
(HYPERTENSION) (GUANETHIDI11,M) (BENZOTHIADIAZINES)
(DIUREETICS)

DOBRWU-EMCU, Viorica, dr.
~ -1
Current concepts concerning the pathogenesis of
congestive
cardiac insufficiency. Med. intern. 16
no.3t257-264 Mr'64-
1. Lucrare efectuata in Institutul de medicina
interns. al
Academiei R.P.R. si al M.S.P.S., Bacuresti
(director: acad.
ll.calaupu).

DOBRY-M-ENESCIT, Viorica- MOVORTNI, Sanda; HARNAGEA,
P.; VULPFECU., Sonia;
NER I C.
Value of electrocardiograms In the diagnosis of
chronic cor
pulmonale secondary to chronic bronchitis and
obstructive
pulmonary emphysema. Stud. cercet. mod. intern. 5
no.4:
397-418 164.

STEINBACH, M.; DQBR .,9-RLESCUj, oTica; VULPESGU,
Sofia; POPESCU, I.;
W. _ _ _ IL
TEODORINI, Sande; HARNAGRA,, P.; CONSTANTINFJYV, M.)-
GEORGESCU, MA,
CUCU,, F. J*
Methodology of epidemiological investigations in
atherosclerosis.
Stud. oercet. med. intern. 6 no.1:63-66 165.

DOMMU-MRSCUP Viories,
Now data an the patheMesis of coronary
arteriosclerosis,
Stud* aercet. mode intern. 6 no.20-15-122 165.

FILIPOIU, Alexandru (Buzau), CAPITAIN ' Gh., prof~
(Anlrn); UIRSULFF)CU, Octavian
(Bijeuroati); RUCUR, loan, prof. (Slblu); PARLAPAN,
Strifan ("V~Iati);
ZOLMN, Demeny (Aiud); CORBAII, C. AurelDin).-
'DONUs,-UUiIj 1, (Wtrni,
Buzaii); MRZAN, D., prof. (Vilcea); GOREA, Airisti~e
(Pla~o3til,
IONFSGU-TIU, C.
Exercises and problems proposed for grwips- 5-8. GaL
mat T3 16
,e1
no.4il'i-179 Ap 165.

DOBRECOV, L.N. [Dobrateov, L,N.]
Thermionio energy converters, 09 oas fys 12
no.5/6t428-438
162.
1. Fysikans teohnicky ustav, Akademie ved Svazu
sovetakyoh
sooia.Ustiokyoh' republik, Leningrad.

VOW
22064
S/iBIJ61/003/004/030/030
B102/B209
19)
AUTHOM Dobregot V. P.L Rogachev, A. A.j Ryvkin, S. M.9 and
-Ta-roshetakiyt It D.
TITLEt Low-temperature breakdown in germanium in connection with
radiative defeets
PERIODICALi Fizika tverdogo telat v. 3, no. 4, 1961, 1298-1300
TEXTs In germanium doped with elements of the third or fifth
group,,the
current may suddenly rise at helium temperatures when the field
applied
exceeds a certain critical value. This effect is known as
low-temperature
breakdown. The following is the mechanism of this effeott At these
tempera-
tures, the majority of carriers causing impurity conduction is
localized at
impurity centers# and resistivity is high. When a field is applied,
the froe
carriers are accelerated and# at a certain field etrength, their
energy is
high enough to oaues impact ionization of the filled impurity
oenters. The
low-temperature breakdown in Go or Si due to donor or acceptor
impurities
has been investigated repeatedly. The present paper is a report on
studies
of this effect which is caused by radiative defects; such defects
have been

22064
S/181/61/003/004/030/030
Low-tem'perature ... B102[B209
produced by irradiating the semiconductor with gamma quanta or
fast neutroxla~
Pirst, the energy levels of the radiative defects are discussed;
Fig. I
shows the level scheme for gAmma-irradiated (a) and fast-neutron
irradiatod
(b) germanium. The two shallow levels of the radiative defects
are only
0.02 and 0.01 ev, respectively, off the valency band; at helium
temperatur~-S,
they are occupied by electrons only partly or not at all. In
neutron-ii-
radiated Ge specimens, the 0.01-ev level was found to be free
from elect2-c-lis
at helium temperatures. In chemically impure specimens, the
presence of
donor centers offered a certain compensation, and the level was
partly oc-
cupied by electrons. Volt-ampere characteristics of such
specimens were
taken by means of a "characteriograph." They were analogous to
those ob-
tained by B. Vul, E. Zavaritskaya, and V. Chuyenkov for the
low-temperature
breakdown due to impurity centers. Altogether, three specimens
were examin-
edt gamma-irradiated 1-yhad a concentration of shallow radiation
levels of
Na _ T-jol3cm-3 and a hole concentration on them of p a =
1.1ol3cm-3; 1-n and
2-n were n-type specimens having a resistivity of 2 ohm-cm; after
neutron
irradiation they were p-type. n-type and p-type specimens having
a resintiv-
itY of 3 and 12 ohm-cm, respectively, were measured for
comparison. The

S/181/61/003/004/030/030
LOWLtemperature ...
B102/B209
values of the cri'tical field strength (1)*and of the bveakdown field
strength (2) for these two specimens are listed in columns (3) and
(4) of
fthe-table. The authori thank T. V.Mashovets and N. A. Vitovskiy for
having
prepared the gamma-irradiated specimens,~s,B Well as S. R. Novikov
and R. F_
1.1l.K6noplevaya for the neutron-irradiated specimens. There are 2
figures, 1
table,.and 11 referencest 5 Soviet-bloc and 6 non-Soviet-bloo. The
most
recent r~ferenoe to an English-language publication reads as followas
McWhorter, R. Rediker, Proo- IRS) 47t 1207, 1959-
ASSOCIATTONs 'Fiziko-tekhnicheskiy institut im. akad. A. F. loffe AN
SSSR
Leningrad (Institute of Physics and Technology imeni
Academician A. F. loffe AS USSR Leningrad)
SUBMITTEDt December 2 ig6o
.1ro
Card 3/4.
4D B'j'j NICK

4

12

9-5

7.5

is
10.2
9

Ldw-temperature ...
22064
S11811611003100410301030
B1021B209
ON
0.0:
rig, I

34'121t6
s/isi/62/004/002/043/051
7 7 B102/B138
AUTHORS: Dobrego, V. P., and Ryvkin, S.' M.
TITLE: Negative photoconductivity in germanium at
liquid-helium
temperature
PERIODICAL: Fizika tverdogo tela, V. 4t no. 2, 1962, 553 - 555
TEXT: Negative photoconductivity was discovered in n-type Ge
with
specific resistivity of 0.2 - 0-4 ohm-cm and p-type Ge of 0-5
ohm-cm at
helium temperature. In n-type Ge above 1 ohm-om no'effect was
observed.
At low illumination intensities conductivity decreases in a
very short
range (a in Fig. 1). Oscillograme were taken of the current
rise and
drop in a cell with the specimen exposed to square light
pulses. From
the oscill~grame it can be seen that positive and negative
photo"- ' -
conductivity have different increase and decrease constants,
the latter
being particularly marked. Both curves are non-exponential,
The 'red VY
edge of negative photoconductivity of n-type Ge is at about
0-74 ev. At
the short-wave side photoconductivity decreases slowly and
vanishes at
1*1 - 1.3 A- It is assumed that the negative
photoconductivity may be
Card (7D

RYVKIN, S.M.; DOBREWp V.P.; KONOVAIENKO.. B.M.j
TAROSHETSKIYv IA
Induced impurity breakdown in compensated germanium
and,~
current oscillations related to it. Fiz.tver.tela 4
no.Vt
1913,1914 Jl 162. WRA l6t6)
1. Fiziko-tekhnichaskly institut imeni A.F.Ioffe AN
SSSR,
Imningrad.
(Breakdown, Electri8) (Germanium-E.lectric
properties)

-ACCESSION M AP4028452 181/64/006/BN/12Q3/1207.
8/0
AUTHORSt Dobrego, V. P.; Ry*vkin, S. U.
jTITLE1 Jumps in photoconductivity and recombination between
impurities
~;SOURCEs Fizika tverdogo telat-ve 6j no- 4P 1964, 1203-1207
iTOPIC TAGS: photooonductivityp recombinationt germanium,
ailicon,.impurity,
jelectron-transitiont lui ampere characteristic
!ABSTRACT: Experimental ataidies have revealed a new type of
recombination transiti__Y~
;in germanium and silicon. This is an interimpurity recombination,
involving direct
.transiti6n of electrons between different levels. The process is
effected by larie
;concentrations of small impurities but not by development of an
impurity'band.
'Interimpurity recombination is concluded to be a definite process
involved in Jumps
~of photoconductivity. The time lag of photoconductivity at low
compensation is less
:than at greater compensation. The cause of this change.~a found in
the fact that,
-(when compensation increases) concentration of equilibrium
electrons at donors
.declines, and, consequently- the intensity of reo
f ombin~tion declines. Despite the
blow level of excitation, the lux-ampare characteristics of
photoconductivity Jumps
tare strongly sublinear. Such obaraoterigties may be'explained on
the basis of thial'
~ard_.1/2

Pqp~~GO, V.P.; OKSMAN, Ya.A.; RYVKIN, S.M.; SMITINOV,
V.11.
Discontinuity in conductivity and the photodielectric
effect
in germanium. Fiz. tver. tela 6 no.9:2860-2862 S 164.
(MIRRA 17:11)
1. Fiziko-tekhnicheskiy institut imeni loffe AN SSSR
i Gosudarst-
vennyy opticheskiy institut imeni Vavilova, Loningrad.

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ACCESSION NR.- M)404069-
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Card 2/3

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s (yjyc E -F4 zika tv~?r(lagc~ e! a no. 1965, 8hi-04",
r eccnbinat i on , gall i um ar z, Fn-
reseal-ch, 11j-x ampere-EhiFa`c-t-i~r--Istic, interimpurity
recumbinW-1-1,
-ontinuation of earlier work 7 N.
n7ii s a a
4,=. photocondu-ti,,rlty connected witb the interimpurity
recom., birm-tion
-1-pe- the aut hor S ~rll spr' r~,
corid,uctiNrity wnd jump da-rk conductivity at sufficient
-Low tervemt,~
rie - denelt-; 0 rooz, teymcrature was x 1~-lb cm- wit?l t)IP
1, jzrerit)~ exc".dlrig t1his
that jl= Dhot-7w-orductivity and inLerL%pu-ri,,y
r,~-comtiuatlo.-~
Card 1/2