SCIENTIFIC ABSTRACT L.N. DOBRETSOV - D. DOBREV

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• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000410610013-5
• Release Decision: RIF
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• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 13, 2000
• Sequence Number: 13
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

PA - 2800
Effect of Reflected Electrons in Second Electronic Emission.

can be connected with the increase of the reflection-coefficient

in
the case of growing (p (angle of descent of the primary electron

beam). The influence of reflected electrons on the SEE-pheomenon

was
investigated. On the basis of experimental data formulae for the

(theoretical coefficient of SEE)
comparative judgement of 6

theor

. In this range the free path of the
were deduced in the range U

p

dispersion of primary electrons is
greater than the effective work

' The investigation of 6
function of the secondary electronsA.

theor
2

carried out here lead to suppose that the reflected electrons play

a considerable part in the process of exciting seoondary electrons

and that this influence should not be neglected when investigating

the SZE-phenomenonp especially in the case of materials, which

show
a high reflection - coefficient.

Q illustrationst I table and 4
citations from Slav publications)
ASSOCUTI011s
L FT I
PRESSMED NYJ

;SUBMITTEDi
13-11-1956
LVAILABLEi
Library of Congress.
Card 2/2

p
I
DOBRETSOV, L.N.
Theory of surface loniza,tion, Trudy LPI no#1941141i,33 ,
38.
.,r MRA 11111)
(Ionization)
11-
I

66291
AUTHORS: Bol'shov, V. G., Dobretsovy L, Nei SOV/181-1-11-26/27
Zharinov, A..A., Krachino, T.-V-.-, Re nikova, Me K.
TITLEt Emission Properties of Germanium Treated in Cesium
Vapors
PERIODICA L: Fizika tveraogo tola,'1959, 701 1, Nr 11, PP
1768-1770 (USSR)
ABSTRACT: The thermal, photoelectric and seo ondary electron
emissions
of monoorystalline n-germanium eam~les and germanium films
were measured in the conventional way. For the germanium
films the germanium was deposited by evaporation in vaoo=
on glass or a tantalum foil and the latter was subsequently
treated in cesium vapors. The measuring results are the
following: for the germanium film deposited by evaporation
on glass and subsequently processed, an increase liy. 2
orders of magnitude could be established in the electrical
conductivity. This points toward a change in volume of the
layer. Figure 1 contains the dependence of the rea work
function YT on the temperature of the cathode following
a cesium treatment at 80000 cathode temperature and avA1500C
measuring instrument temperature. If the cathode is heated
lard I/ at T>30000 for a sufficiently long period after the
cesium
C 4 processing and if the cesium vapors are frozen out, one can
2-

Emission Properties of Germanium Treated in
Cesium Vapors
66291
SOV/181-1-11-26/2T
again obtain a to, corresponding to-the value of pure
germanium. Figure 2 represents the characteristic spectrum
distribution of 2 photoelectric elements, whose germanium
photoelectric cathodes were treated in the following
methods
a) germanium was evaporated in a vacuum, precipitated on
molybdenum glass, and treated with cesium vapor. The
temperature of the vapor and the sample was -2000C. b) The
photoelectric cathode was illuminated through an uviol
glass mounted before the sample. Figure 3 contains the
course
of the secondary electrai-emission coefficients U ~measured
at room temperature) kor the following samples: a non-
treated germaniump b) germanium treated at 150`0 in cesium
vapor and for several minutes at a sample temperature of
-8000C. Figures 2 and 3 show that, disregarding a certain
shiftj the basio course of the curves is maintained4or
both samples. Additional details will be published in the
near future. There are 3 figures.
ASSOCIATION: Leningradskiy fiziko-tekhnicheakiy institut
AN SSSR
Card 2/P ".(Laidngrad, Physico-technioal Institute of the
AS USSR)

PHASE I BOOK EXPLOITATION SOV/5348
Dobretsov, Leontiy Nikolayevich
Atomnaya fizika (Atomic Physics) Moscow, Fi=atgiz,, 1960.
348 p.
40,000 copies printed.
Edo.: F. M. Kuni and M. M. Kall; Tech. Ed.: A. A.
Luklyanov.
PURPOSE: This book is intended for students of higher
technical
educational institutions.
COVERAGE: This is a textbook on atomic physics based an a
series
of lectures given by the author to students of the Radio
Tech-
nology Division of the Lenlngx~4dskly politekhnicheskiy
institut
(Leningrad Polytechnical lottitute). The..following topics
are
discussed: properties of electrons and ions, photon theory
of
light, quantum theory of atomic structure, elements of
atomic
spectroscopy, electron spin, Pauli's principle, molecular
optics,
X-ray and corpuscular diffraction, quantum mechanics,, and
the
electron theory of solids. Mention is made of E. V.
Shpollskiy,
Car&-3./6

Atomic Physics
SOV/5348
author of Atomnaya fizika (Atomic Physics).. and N. A.
Belov,
S. L. Dobretsovo and A. 0. Savinp students of the radio
divis-
ion of the Institute. There are no references.
TABLE OF CONTENTS:
Foreword 5
Ch. I. Electrons and Ions
1. Electron charge 7
2. Movement of charged particles in electric and magnetic
fields 13
3. Detemining the specIfic charge of electrons 23
4. Dependence of mass on velocity 27
Positive rays 30
9-0 Mass spectrometers 33
7. Elements of electron optics 42
48. Classical electronic theory of metals 51
Cardlz~~

81107
8/057J60/030/04/01/009
I/ --Z'7 OID B0041BOO2
C/2 0
OTHOR: Dobretmov. L. N.
TITM Thermoelectronio Transformers of Thermal Into Electric
En2M
PERIODICAM Zhurnal takhnicheakoy fiziki, 1960, Vol. 30, Po. 4,
pp. 365-394
TEXT: The author discusses the problem of a practicable
thermoelectronic
diode with a steep characteristic in the negative potential
range (Fig. 1)
and a sufficiently large saturation current of the cathode. He
discusses
the action of such a diode from the thermodynamic viewpoint by
comparing
it with a thermodynamic machine (Fig. 2). The followin types
of olectrio
energy transformers published so farp are describedi 1~ vacuum
diode with
an uncompensated space"Sharge (called "vacuum thermocouple
with space
charge"). The course of the potential energy within the space
between
cathode and anode is graphically shown (Fig. 3). Fig. 4 gives
the
Langmuir diagram with the dimensionless coordinates
Furthermore,
the calculation and graphical representation of the voltage -
current
characteristic is given in Figs. 5, 6. Fig. 7 shows the power
W of
Card 1/4

81107
Thermoolectronic Transformers of S/057/60/030/04/01/009
Thermal Into Electric Energy B004/BO02
the diode as dependent on the external resistance r. Fig. 8
gives the
dependence of W on the current density j at different
temperaturest and
Fig. 9 that on the distance d between anode and cathode. The
author
mentions that with this type practicable current densities
can be attain-
ed only at d-values of several microns. Fig. 10 shows the
scheme of a test
model according to Ref. 7, and Fig. 11 gives the respective
experimental
data. 2) Diodes with a space charge compensated by Cs* ions,
with Ca* .
developing only by ionization of the cathode surface (vacuum
thermocouple
without space charge): The processes taking place in this
transformer are
dealt with on the basis of A. I. Ansellm's calculations
which were made
according to a suggestion by A. F. Ioffe. The case in which
the 'work
function at, on the hot electrode is smaller than e~, on the
cold eleo-
trode (Fig. 12)'has not been investigated in detail. For e~j
> 8$2 the
following iteme are distinguishedt a) density J,, of the
saturation
current of the hot electrode is smallIer than J2s of the
cold electrode
(Pigs-'13AB, Table 1); b) j is , J2e ; 0) Ji,_;~ J2, ("'9'
19)' In
this case, the amf at T2 - 4000K is given for different ~,
and T
Card 2/4

81107
Thermoolectronic Transformers of S/057/60/030/04/01/009
Thermal Into Electric Energy B004/BO02
Nble 2). Figs. 20 and 21 show the range within which the
reduction of
the power'factor by heat radiation is not too great. The
compensation of
the space charge by Cs+ ions is discussed. The suggestion
of an irregular
Ce distribution on the cathode (Refs. 3v 10, 11) is not
considered to
be very promising (Fig. 22). 3) Transformers in which the
space charge
is compensated by means of ions developing within the
space between
cathode and anode (plasma transformer)s here, the author
refers to papers
by M. Ye. Gurtovoy and G. I. Kovalenko (Ref. 13), P.
Marchuk (Ref. W,
and N. D. Morgalis and P. Marchuk (Ref. 15) concerning
the voltage - cur-
rent characteristic of a thermooleetronio diode with a
tungsten cathode
in Co vapor. Ref. 16 gives the values of the power
coefficients (Pig. 23)
which are only useful at temperatures at which the
tungsten cathode is
considerably affected by vaporization. Finallyp western
papers on plasma
transformers (Refs. 10, 18-28) are discussed, and a
schematic diagram
of a test apparatus from Hof. 18 Is shown in Fig. 24. The
author mentions
the following unsolved problemss influence of the
magnetic fields on the
motion of electrons and ions (pointed out by B. P.
Konstantinov), voltage
drop at the cathode due to emission current, etc. The
author doubts that
the plasma outside the cathode and anode layer is in
equilibrium.
Card 3/4

81107
Thermoelectronic Transformers of 8/057/60/030/04/01/009
Thermal Into Electric Energy B004/BO02
There are 24 figures, 2 tables, and 26 references, 7 Soviet, 18
British,
and I German.
ASSOCIATION: Fiziko-tekhnioheskiy institut AN SSSR Leningrad
(Institute
of Physics and Technology of the AS USSR, Leningrad)
SUBMITTEDt' January 129 1960
Card 4/4

BAUL9 M.j-DOBRETSOVi, L N.
Milliken vacuim capacitor. Part 1. Radiotekh. I
elaktron-6
n~.46-637-64,1 Ap 161. (Electric capacitors) (MIRA
14:3)

30438
B/109/61/006/012/013/020
D201/D305
AUTHOR: Dobretsov, L.N.
TITLE: Constants of thermionic emiision
PERIODICAL: Radiotekhnika i elektronikat va 6y no@ 12, 19619
2054 - 2062
TEXT: In the experience of the author many people who now have
to
deal with problems of iherinionic conversionsp have no clear
ideas
as to whEt the thermionic emission constants are. he deems it
to be
useful, therefore, to consider In the present article these
con-
stantsp to derive them and explain their meaning. From the
first
principlesq he derives the expression for the saturation
current
in thermionic emission containing the Sommerfeld constant Ao
and
then proves that the equation for the thermionic emission
current
density is valid, with the same value of A. for all kinds of
emit-
tersp not necessarily metals; The equation is then rewritten as
AlT2 exp L- 12J (11)
kT
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30438
S/109/61/UO6/012/u13/U2O
Constants of thermionic emission D201/D305
assuming that the work function is linear within a certain
range of
temperature near T frow which he proceeds to discuss the
Richard-
son's straight ling the graph of In J/T? = F(I/T) -
Richardson's
conetant A1 and the xichardson's work function. By considering
the electron flow emitted by one of the electrodes of a piane
diode
and neglecting the effect of space charge and electron
dispersion#
ihe expression for the electron stream leaving the first
electrode
for the second d,012 and vice versa dv2i are derivedg in which
D, V/
(,Wxl)D2 (wx2)/l - R,(Wxl)R2(Wx2) ~-- the combined diode
transit coeffi-
cient and is denoted by D12(Exl V)' Under the same transit
condi-
tions D12~Exp V) = D21(ExtV) and for isothermal conditions Ti
= T2
and V = 0 it follows that
VI(Ex - E01) = 'V2(Fx - 'E02) at T = const. (14)
Since the distribution function V(EX - Eo) is determined by the
emitter properties and iemperatu,rer Eq. (14) is true
independently
Card 2/4

SA0014~611006101210131020
Constants of thermion-io emiseion D201/D505
Of4hether the emitter form a balanced system or not. The universa-
lity of current density, in various bodies is considered next for
the case of 'a uni-dimensional model -of a crystal. Considering
again
the current density in a plane diode with reflection at electrodes
1 and 2p expressions
91 (TI)
A,) A(d) T',r (T,,. AV) exp 17 hTi [16a(12)j
and Aj(a~) Tg2 exp (Ts)]
Us
[16a(21J
(a) (a) (a)
are,derived containing A(') A D and A =.A D the combi-'
12 o 12 21 0 21
thermionio emission coefficients of electrode 1 and 2'respecti-
valy which are staied to differ in general owing to the averaging
con
ditione. Lastlyt by considering the Maxwell energy distribution,
thermal emission electronst the condition
A(a) - An) A) A(d) DID" (19)
12 .2t
Card 3/4

A38
8/10 61/006/012/013/020
onstante of thermionio emission D201YD305
d ived# in which A,* is called the combined thermionic emissi-
9. er
t2
_,.~,,on_oonstant of a.diode which may be used to find the
expression for
i..current density from one electrode or electrodes into another.
This
""t.,
tk--;J-_- expression then is.
A'., T' exp (D (T) - (20)
P kT 11.
in which T the temperature of emitting eleotrodet (D(T) its "ac
ing I., viork functiont equalto the work function vp(T) in the
absence
of retarding -field and equal to [q)(T) + AVJ in- the presence of
retarding potential difference AV, There are 3 figures and 2 So
viet-bloo references* LAbitractor's note: Ref. 1 is a translation
from )Aiglislap and Ref 2 from a German language publicattonj.
;.'SUBMITTEDt March 219 1961
-Oard 4/4

BAGIL, M.; DOBRETOV, L. N..[Dobretoov, L.N.)
Pbysical prinaiples of the method of Millikan vacuum
condenaer. Studii
cere fiz 12 no.2025-334 161.
1. Institutul poUteebnio laningrad.
(comic raya) (vacuum apparatus)
(Gondensers(Slectrioity))

L 5405-M EWT(1)
ACC NR: AP5027393 SOME CODE t tflt/0161/65/007/011/3200/3203
AUTHOR: Dobretsov, L N
ORG: Physicotechnical Institute, AN StSR, Leningrad
(riziko-tekhnicheskiy Institut.
im. A. F. Ioffe AN SSSR)
TITLE: rield emission from metal covered with a layer of adatoms
14'f ';C.
o tela, v. 7, no. 11, 1965, 3200-3203
SOURCE: Fizika tved4
TOPIC TAGS: Itun sten, germanium, metal film, Fermi level, field
emission
ABSTRACT: The author discuss s the results of previous.studies by 1.
A. Sokolov-
skaya and N. V. Mileshkina MT--3, 389, 1961; 5, 2501, 1963; 6, 1786,
1964) on
~fie.ld emission from tungsten covered with a alayer of germanium. A
qualitative theo-
retical explanation is given for the following two observations from
these previous
papers: 1. when a tungsten knife-edge is covered by a layer of
germanium (assumed
to be close to monomolecular thickness)$ the field emission cur+ent
is reduced by a
factor of 40-70, but the current-voltage curve remains parallel to
that for pure
Aungsten, which indicates that the work function Is not changed; 2.
the energy spec-
Card 1/2

L 5405-66
'ACC NR: AP027393
trum for the emitted electrons shows, in addition to the single
maximum observed in
pure tungsten, a second maximum corresponding to electrons with lower
energies.
.The monatomic semiconductor theory proposed by Sokolo-vskaya and
Mileshkina is re-
jected,and a hypothesis is proposed which Is based on Gurney's
unidimensional model
;of the adsorbed layer ..Gurney--Phye. Rev.j-47, 479,4935). The ratio
between
:the square of the amplitude of the wave function wbich corresponds
to some energy
*E in the potential wall of the layerand the square of the amplitude
of the wave
X
~,function in the metal A Q ) may be taken as an index of the degree
to which the
X
,electroti cloud penetrates the potential barrier between the metal
and the layer for
this value of E It is assumed that for the case of a germanium layer
on tungstenj
_X
'the Fermi level in the metal is located-opposite the section of the
A(S curve with
-tion In K 1 Orig.
small A, and that A(B increases rather rapidly with a redue
X X
art. has: 2 figures.
'SUB CODE: SS/ SUBM DAM 19AprSS/ ORIG REF: 004/ OTH REF: 001'
Card 2/2'

IM
146947-;65 m
A rr7F,
~~Oy f i z I K I, v 3b no. 3 ~f 6,; 5
TOPIC TAG~,- s.,-fate phe-nomenwi, lionization, alectrc felc
A FkF f r :- s -n t a .-i t h o r (Z h- F 2:1 1
eorreeted in the present papers The author repeats the ealculatloli
n q -q -J. 1. r 1.11 Ya I i on na ~rn i s s i
,0,0

Orig.art.his- 1.7 tormulas.
s s v Iris t -I, ri.A. F AN
SLMIMD, 06Mi,y64 ENCL: 00
NR REF SOV: 00-1 OTUR; 000
ClIld 2/2

'L 45916-66 _EWT(m)/EWP(w)/T/EWP(t)/LTI IJP(c) i
,,ACC N Is AP6028619 SOURCE CODE: UR/0057/66/036/008/1449/14.'
ILFMOR: pobretsov,L.N.; Matskevich, T,L.
ORG: Physicotechnical Institute im, A.F.Ioffe, AN SSSR, Leningrad
(Fiziko-tekhnich-
eskiy institut WNR SSSR)
'TITLE; Concerning:the work functions of metals S/
SOURCE: Zhurnal tekhnicheskoy fiziki, v. 36, no. 8, 1966, 1449-1458
TOPIC TAGS: work function, transition element, metal, -MCI-09d.
FILM
ABSTRAM This paper is a polemic against the views concerning.. the
work function of
metals held by G,V,Samsonov and his associates and expounded by
them in a series of
papers beginning in 1957, the most recent of which appears in the
present issue of
thq Journal (ZhTF, 36, 1435, 1966 /see Abstract AR6028618/). The
work function is
carefully defined and its relation to the contact potential is
explained. Experiments
witli films deposited on different substrates show that in the
case of metals it is the
first few molecular layers at the surface that determine the work
function, although
hunfreds or thousands of molecular layers may be inVolved in the
case of somiconductorJ-
The:authors admit that with the aid of a perfected theory (which
is not in sight at
pre-pent) one should be able in principle to calculate the work
function of a pure
material from the properties of its atoms, but they doubt that
simple scalar properties
woqld suffice for the purpose. The concepts presented by Samsonov
et al, and their
Caid 1/2

L--45916-66
NR, AP6028619
prisentation of them, are criticized for lack of clarity.
Samsonov ot ale have not b04
suit'iciently critical of the experimental data when comparing
their conclusions with
them: data from diverse sources obtained by different methods
are uncritically com-
parpd (some of the measurements were made as long ago as 1906);
the Richardson work
funqtion has been employed when the total emission current work
function would be more
jappio riate; and sometimes "recommended" values of the work
function have been cited
I p
instead of the experimental data themselves. Even the data as
cited by Samsonov et al.
do i)pt always support the conclusions that they draw from
them, and a critical examina-
t14 of the most reliable work function data reveals no support
for any of their con-
q
C1140-, ions. It is concluded that there is no support of any
kind, theoretical or experi-
I
meiiPal, for the thesis of Samsonov et al, that the work
function is mainly determined
by the bulk properties of the materials 7Ue authors thank
M,V,GomDyunova for her
active participation in discussions of the paper. Orig* art.
has: 2 formulas, 2
~figures and 1 table,
SUB CODE: 20 SUBM DAM 06jan66 ORIG6 REFt 031 OTH REF: 013

3RET70V, 14 -
13 v
Six A t
Ig
pp
IK III
4 -g
P,

BEIDUSOV, A.F.;_RQBREI~~C&-N.A.; KOCHKIN, Yu.N.; KRIVENKO,
A.P.; KUTOLIN,
V.A.; TELESHEV, A.Te.; MiLESTOV, V,V.
Experience in the utilization of calculations on electronic
computers for the solution of.petrochemical and mineralogical
problems. Gaol. I geofiz. no.6tl63-164 164. (MlRA 18i11)
1. Institut geologii i geofiziki Sibirskogo otdeleniya
AN SSSR, Novosibirsk.

~DOBWSOV,-N.L-
Relationship between the principal Ions of rhomble
pyrojenee and
their effect on optical properties of minerals. Zap.
Vass. -vdju
ob-va 88 no.6:672485 159. (MIRA 13:8)
(3~,roxenes) (Ninerale-optical properties)
e

SOBOIEVP V.S.; ZOLOTUKHIN, V.V.; DOBRETSOV, N.L.
---------------------
V.N.Lodochnikov's works on Siberian petrography; on
the 75th
anniversary of his birth, Geolai geofiz. no*5:136-139
162.
(MIRA 15:8)
(Lodochnikov, Vladimir Nikitich, 1887-1943)
(Siberia-Petrology)

DOBESTSOV N L - PUPYSIEV, B.A.
Find of marine Middle Carboniferous sediments in
the eastern
Tarbagatay Range. Trudy VSSGEI 74:59-62 162. (NM
15:9)
(Tarbagatay Range-Goologyt Stratigraphic)
(Tarbagatay Range-Deep-nea deposits)

-POWT-89-4-A IL
Miscibility limits and mean compooltions of jadaite
pyroxenes.
Do4. AN SSSR 146 no.3.-676-679 S 162. (NIRI 25:10)
I* L2Btitut geologii i geofiziki Sibirskogo otdeleniya
AN SSSR.
Predstavleno akademikom V.S.Sobolevym.
(Jadeite)

DOBRETSOV N L
Anomalous analcim from jadeite-rocks of tboD Borus
Range (Western
Sayan Mountains) and its origin. Geol. i geofiz.
no.12.114-116 162.
(MIRL 16:3)
1. Institut geologli i geofiziki Sibirskogo, otdeleniya
AN SSSRP
Novosibirsk, . (~Vt.us Range-Analcite)

DOBRETSOV, N.L.
Mineralogy, petrography and genesis of ultrabasites,
jaac-itites And
albitites in the Borus Range (Western Sayan Mountains). Trudy
Inst.geol.i geofiz.Sib.otd.AN SSSR no.15:24" 316 i63.
(MIRA 17:10

DOBRETSOV, N.L.; PONOMPUTM, L.G.
lawsonite-glaucophane metamorphic schists in the
Fenzhina Range
of northwestern Kamchatka. Dokl. AN SSSR 160
no.1:196-199 Ja 165.
(KIRA 18:2)
1. Institut geologii i geofiziki Sibirskogo otdeleniya
AN SSSR.
Submitted July 21, 1964.

DOBlREI,':0Vpl N.L.
Genesis of ultrabasites. Geol. i geofiz. no.3:3-20
161,
(14IRA 18:7)
1. lnstitut geologii i geofiziki Sibirskogo
otdeleniya All SSSR,
Novosibirsk.

0
M
DOBRETSOV, N.Lj PONOMAREVA, L.G.
Paragenstic types and the dependence of the composition of
metamorphic
pyroxenes on the composition and conditions gove-ning the
formation of
the rocks enclosing them. Sov. geol. 7 no.12:39-57 D 164. (MIRA
18S4)
1. Institut geologii i geofiziki Sibirskogo otdeleniya AN SSSR.

DOBRETSOV, N.L.; REVERDATM, V.V.; SODOLEV, V.S.;
SOBOLFV, N.V.; DSHAKOVA,
Y-e-.N.; XIILFSTOV, V.V.
Basic characteristics of the distribution of the
facies of -
regional metamorpbism in the U.S.S.R. Geol. i geofiz.
no-4:
3-18 165. (MIRA 18:8)
1. Institut geologii i geofiziki Sibirskogo otdeleniya
AN
SSSR, Novosibirsk.

A- 41 72
-r!-en
(MIRA -18:8)
Tir
n ya

DOBFFTSOV1 N.L.; SOBOLFV, N.V.
Some problems of petrology at the 22nd session of
the
International Geological Congress. Geol. i. geofiz.
no.8s
151-154 16!i. (MIRA 180)

,DOBRETSOV., N.L.; PONOMAREVAI L.G.
Pyroxenes of the eclogite facies of jadeite rocks
and
glauoophane schists, Trudy Inst. geol.i goofiz.
Sib.otd.
AN SSSR no.30:56-96 164. (MIRA 18:11)

DOBRETSOV, N.L.
Effect of the change of temperature and sodium
potential
during the formation of diaphthoresis of jadeite
rocks
in ultrabasites. Trudy Inst. geol.i geofi7.
Sib.otd. AN
SSSR no-30:169-184 164-
(MIRA 18:11)

ACMS101i INR: AP3003T73 S/OC60/63/036/006/1335/1341
AWHOR: Koton, 14. M.j I~Abretsov,, S, L.; Sokolov&., T. A.
TrTPM- Preparation and situdy of the properties of q2p2jTmers of
N-substituted
Me &mryLamides with ot3gjene isud methyl metbacrylat
SOURCE: Zhurna%rikladnoy kb 6, 1335-1341
Li, v. 36, no
TOPTC TAGS- styrene, wetbyl methacrylate, V-substituted
methaerylemide, copolymer,
o-blphenylnetliacrylamide, p-bipbenyJ: methacrylamide,
&.1pha-naphthylMethacrylamide,
beta-napht-hylmethecry1=1de., -triethylenine, Increased beat
resistance, increased
impact strength., dielectric property, temperature frequency
dependence, loss
tangent, dielectric constant, softening point, N-substituted
methaerylami-de-methyl,
methacrylate copolymer
ABSTRACT: of V-su
The effect batituted raethacrylez!ddes on the heat resistance and
i dielectric properties of the copolymere of such emidea with styrene
or methyl
methacrylate has-been -investigated. . The following N-substituted
amides were used
as monomers: N-o-biphen~l----(I); V-p-blphenyl- (II); N-a-naphthyl-
(III); and
- ------ -- -

L 3.3678-63
ACOMSION M% AP3003773
N-P-naphthylmethaorylamide WL -'Vionomer I vas.eynthesited for the
first time by
Sokolova et al, in 1959. monomers were prepared from the aromatic
enine by
a6ylating it with t*thacry3oyl chloride In the presence of
trietbylamine to
neutralize the OVOlVing BOIL. The copolymers vere obtained 'by bulk
polymerizati(,n
of the *OmPonents with 0-3-0,4 bentoyl peroxide, vith a single step
increase in
temperature. The data on comp)sition., polymerization conditions,
degree of coz3,.
version., and dielectric properties are tabulated for the 26
copolymers ob~~&ed,
wb14bw=eaUUdro1w1es9 tbermoplestic materials. The dielectric
propertleakwere
determined in the temperature raW from -180 to 200C, at 400, 1000,
and 5000 aps
with an ME device and at
ell so nt, &-Ai-IA-ectrite- -,6onstwit aal t- -he frequency
C~ependences of the
a tangent are plotted for the copW~ymers The diele
l
0b atria p"rties of the
copolymers approximate thono . of pOlstyr-ene or ly(methyi
met;iacrylate). The
p0
softening point of the copolymers Increases with an increase in,the
V-substituted
tmethacrylamide content, Orig. art.~hwt 3 tables and 3 figures.
'ASSOCIATION.
Institut vr~soliftoiekulyaroywkh noyeftneniy AN SSSR (Institute of
Macromolecular Compounds., AN;SM)
BUMTM: Ma~?, Wis ACQ:- 07Aug63 MICL: 00
M - 001E.. CH M MW SM; 003 MHEZi 003
Card: 2/2

DDBRETSOV, V.B., inzh.
N_
Open-pit coal mining in Noril'sk. Ugol' 37 no.3:24-25
Pir '62.
(xIRA 15:2)
(Tunguska Basin--Strip mining)

RZHEVSKIY, V.V., prof., doktor tekhn. nauk; PROTASOV,
Yu.I., kand. tekhn.
nauk; gornyj inzh.
Low frequency breaking of rock. Gor. zhur. no.037-39
Ap 165.
(WRA 18:5)
1. Moskovskiy institut radioelaktroniki i gornoy
elektromekhaniki.

DOBRET'SOV2, V.B.; PROTASOV, Yu.1.
Study of th6 electric resistance of rocks and min-als at
low
temperatures. Izv. AN SSSR. Piz. zem. no.4!102-103 265-
(MIRA 18:8)
1. Moskovsk-ly inatitut radioelektroniki I gornoy
elektromekhamiki.

DOBRETSOV, V.B..; SUMAIMVP A.Ye.
MAthods of rock breaking during the simultaneotis action of positive
and negative temperatures. Fi2.-tekh. probl. razrab. pol. iskepl-
no.5:171-173 165. (MIRA 19:1)
1. Institut radioelektroniki i gornoy elektromeklianiki, 14oskva.

DOBRRT--'~07'r I'04TELEYEV, A.A.
Ifain tmnds in the work of area design institutes of an
ftssociation. Prom. stroi. 42 no.5:2-4 165. (MIRA 18:8)
1. Obllyedineniye "Soyuzmr--tallurgst.-oyniiproyekt".

NADETN A.P;DOBRMSOV, V. V.
Technic of subtotal resection of the thyroid gland in
exopb-
thalmic goiter. Klin. nod., Moskva 30 no.3t?2-74 Mar
1952.
(CLML 22:2)
1. Professor for Hadmin. 2. Of the Department of
Operative
Surgery (Head -- Prof. A. P. Hadoin), State Order of
Lenin
Institute for the Advanced Training of Physicians inent
S. M.
Kirov.

DOBFMSOT, Y.Y., kandidat meditsinekikh nauk (Leningrad,
ul. Chekhova, d.12.
Parathyroid arterial blood supply [with su=ary In Nnglish
p.1601
Vest.khir. 77 no-7:99-103 J1 156. (MLPA 9:10)
1. 1z 1-y khirargicheekoy kafedry (i.o.sav. - doteent
A.S.Chachulin)
Gosudarityannogo ordena Lenim instituta
usovershonstvovaniya
vrachey im, B.H.Kirova,
(PAUTMOID GLADS, blood supply
arterial)
(ARTIRINS, anat. and histil.
parathyroid arterial blood supply)

AUTHORS:
TITLE:
PERIODICALs
56-2-35/51
Dobretaov, Yu. P. , Nikollskiy, B. A.
The Formbidn gf Positive Pions by Negative Pions
(Rozhdeniye X -mezonov ~f-mezonami)
Zhurnal Eksperimentallnoy i Teoreticheskoy Fiziki, 1958,
Vol. 34, Nr 2, PP. 510 - 511 (USSR)
ABSTRACT: The present work investigated the production of poaLtive
pions
on the nuclei of a photo-emulsion under the action of nega-
tive pions of an energy of flom* 340 � 30 1JeV. The emulsion
chamber consisting of 60 emulsion layers of a total thick-
ness of 23 mm and of a diameter of 100 mm was arranged in a
beam of negative 370 MeV pions of the synchrocyclotron of
the OWAM (- -United Institute for Nuclear Research, Ob"
yedinennyy institut yadernykh issledovaniy). The chamber
consisted of an HM KOH -emu ion V t4 P type. On observ-
ing the emulsion*layers the ~-*.u --t-e decays were re-
corded. Then the found positive P'ions were traced to the
place of their production. When tracing their path 56 stars
Card 1/3 caused by negative pions were found. In the case of 21
stars

The Formation of Positive Pione; by Negative Fiona 56-2-35/51
the emission of a positive pion is accompanied by the
emission
of a second pion, which is identified from the gradient of
granula*r density along its path. Such cases obviously belong
toAhe production of positive pions. In the remaining number
of the cases no emission of second pion was noticed but these
cases can also be related to the production of a positive
pion with subsequent absorption of a negative pion in the
nucleus (or with emission of a neutral pion). The energy of
the such produced positive pions was determined from their
range within the emulsion. The energy of the negative pions
(in the stars with 2 pions) was determined from the density
of the grain. The taking into account of the edge effect is
abortly discussed. Two diagrams show the energy spectrum and
the angular spectrum of the produced positive pions. The
spectra of the positive pions with an&without emission of a
second pion from-the nucleus are similar to each other. In
determining the relative momenta of two pions emitted from
the same star no noticeable correlation of the two pions of
the final state was found. This is, however, only a qualita-
Card 2/3 tive final conclusion. The cross section of the
production

The Formation of Positive Pions by NeCative- Pions
56-2-35/51
Ave piona
of slow positive pions (Ee - 0 to 60 HeV) by nejat -
of an enerry of from 340 _+ 30 LIeV on a nuc cue of the
photo-
%, . -~7 c. 'I'llore are
-emulsion Ij equal to (Y - (2,1 + 0,C) 10 .12.
2 figures, and 8 referonces, 4 of which arc Slavic.
ASSOCIATION: AS USSR (Alcademiya ncuk SSSR)
SUBMIT'llED: October 29, 1957
AVAILABLE: Library of Congress
1. Pions-Formation-Positive 2. Pions-Negative-Applications
3. Pions-Energr spectrum 4. Pions-Angular spectrum
Card 3/3

40), 21(7)
SOV/56-36-4-65/70
AUTHORS:
Ali-Zade, S. A., Gurevich,
I. I., Dobretsov, Yu. P.,

Nikollskiy, B. A.,'Surkova, L. V.
TITLE:
The Asymmetry of Electron Angular Distribution inks_ e
+-Decay

in a Magneti~ Field of 27000 G (Asimmetriya uglovo-go
raspredelen~
+

elektronov t( - e
-raspada v magnitnom pole 27000 G)

PERIODICAL;
Zhurnal
ekeperimental 'no
i teoreticheskoy fizikil 1959, Vol 36,

Nr 4, Pp 132T-1329 (USSR
~
ABSTRACT:
If angular distribution is described by the
expression

P; '>- - 3a
47,dN/do - 1-a cose (a -),.P/3 - a
. -cos(V,A) cl_e-

O
o

acterizes the ratio of the vectorial and pseudovectorial
share

of interaction in p - e-decay; P denotes muon
polarization), it

i's found that the quantity a depends both on
the measuring meth-

od and on the nature of tho depolarized
matter. It attains a

maximum value-of a - 1/3 at cos(A,V) - -1.
For NIKPI-R emulsions

a was determined as amounting to 0.092
t-0.018, for Ilford G-5

it was 0.14. The maximum value attained
by a for graphite is

0.303 � 0.048. The depolarizing property of
matter may be reduced

by applying strong magnetic fields, the
direction of which co-
Card 1/3
inoides with muon polarization.
The increase of a brought about

+ ~OV/56-36-4-65/70
The Asymmetry of Electron Angular Distribution in ~t - e
-Decay in a Magnetic
Field of 27000 G
by magnetic field can be described by a . a 1 0.5
0 [ +~t%E) 2
a0denotes the a-v&lue if no depolarization takes place,A!NE the
energy of fine-structure splitting of the~k-me8ic atom in the
1S-state. An experimental checking of this formula in fields of
UP to 14000 G showed that by it the dependence a(H) is quali-
tatively described. The authors determined a in the Tt--tA- e-
decay in photoemul8ions at H - 27000 G. a was determined from
the
ratio a = 2(N b8okward-N forward)/(NbaokwareNforward ).
Results:
For 0 - 0 - 30 a1 - 0-315 t 0.026
9 - 150 - 180 0 a2- 0.295 t 0.027-
Mean value formation averaged over the directions in which
muons
fly off gives: a 3- 0-305 � 0-019- If a real 'oa cosO, one ob-
tains areal - a 0.940 - 0.324 � 0.020. Herefrom it follows that
Card 2/3 1~'-IP - 0-972 t 0.06, i.e. IXI with an accuracy of
up to a

+ ~OV/56-36-4-65/70
The Asymmetry of Electron Angular Distribution in Ik - e
-Decay in a Magnetic
Field of 27000 G
statistical error of t 6% attains its maximum value and P --
I.
This indicates a considerable degree of inaccuracy of the
for-
mula describing a(H). The authors finally thank B. S. Neganov
and B. V. Sokolov for their help in irradiating the
photoemul-
aions, D. M. Samoylovich for developing the emulsion, and
fur-
ther also V. X. Kutukova, A. M. Alpers, and G. V.
PleshivtBeva
for their assistance. There are 8 references, 2 of which are
Soviet.
SUBMITTED: February 1, 1959
Card 3/3

AUTHOR3 Gurevich. I
4/
SOURCE CODE: UR/3136/64/000/620/0001/0011
.; Makartina, L.. A.; NLkol tsk~jj _B., - A. B. _
IL. i-_
V, S. A.; Shestakov, V. 0.1 Akhmanov,,_V..---/
ORM [Gurevich, Makarlins, Nikoltskiy. Sokolov,
Surkova, Khaklmov, Shestakov] IAE;
EDobretsov] "Irl EAkhwi&wvl LYaP OITal
TITLEt Asymmetry of the angular distribution of
electrons in the decay W* - V*
in a magnetic field of 140,000 gaus "
SOURCEI livecow. Institut atom .exiergii.
Doklady, IAE-6209 19 , Asivastriya uglo-
vogo, respredelenlys elektronov A .Prue 4 mu plus
-6 a plus respada V Magnitnom pole
nopryazhannostlyu 140 000 gauss, 1-11
TOPIC TAGSi mu w&on, pL meson, positron, bubble
chamber. radioactive decay
ABSTRACT: The universal V-A coupling theory
appll*d tv the determination of the an-
gular distribution of electrons In the rvaction I
+ t4 + 0 + Is given by
dN
To' 0. 1 - a coo %
in term of the parameter a. In order to obtain a
value of a which depends an the
polarization state of the masons an atperiment
was performed showing the effect cowl-
tering the dcpolarlsatLon of the don" sodium
through which the meson Is moving.
:7

0
Critical magnetic fields needed to oppose the depolarizing
effect, which in turn a,_
lows more accurate determination of the parameter a, were
found. Only 8800 Sauss
were required in the hydrogen bubble chamber to counter the
effect of hydrogen do-
polarization, However, the scatter In the value is quite
large. The photographic
emulsion yielded such sinaller scatter but required an
application of a very large
magnetic field of 140.000 Same. The value of a found in the
experiment is 0.325
.010 (as compared to thi) theoretical value of 0.333). This
value was obtained by
analydog over 65,000 events. A brief discussion Is given of
the effect of the an-
&*tic field ob the uotb)n of the electron. It is shown that
the electron direction
must be measured vltb~ Pospect to the magnetic field
direction after setting certain
constraints on the seleatlon of the angular range. Wg..art.
bani 3 figures, I
table, $ formulas.
SUB Cowl IS/ SM MTEs 00/ =a urs ow OTH FM 007

23%d)/WP(t)/WP(s)/WP(~)
P~4SWA JD.
9 UR/0120/65/000/004/01 82/0281
621 318- 3x622- 384-634 so
AUTHOR':
30
Akbmu0X.-L_YA1 11U1016 111 M-1 w1kollskiv, 5. A! yjj
-Khakimov, S. Kh.; Shestakay. V. D.t Bobovikow, R.
811 Do 8"0
Zamolodchikov.-B. 1.
TITLE: An arrangement for producing pulsed magnetic
fields of strengths up to 150
kilogauss
SOURCE,',,, Pribory i tekhnika eksperiments, no. 4.
1965, 182-18T
TOPIC TAGS: pulsed magnetic field. thyratron,
synchrocyclotron
ABSTRACT: The units of an apparatus for producing a
pulled aM = e a f
146 kilogause in a space of about-600 cm3 are
described. Pul t. Nof"beryl-
lium bronxeZare povered by a capacitor bank of 0.1
farad capacitance. The capacitor*
%hroi
are charge k ugh limit resistances to 2 ky from a
thyratron rectifier, and a
MOO/5 ignitrou is used as the evitabing element.
Synchronization and control for
operation vIth a synchrocyclatron are obtained by's
special circuit. Thiu arrange-
ment f6r obtaining the pulsed field -operates
reUsbly. In the tests two separate
magnets vere used, each producing a fielA or 146
kilogauss. The use or the 1-100/5
Cwd-

L 2535-M
ACCESSION fiRt AP5021359
Ignitron when proper heating and cooling were maintained prior to
switching In the
field secured operation without breakdown for 20-40 hr at a
switching rate of
10/min. The joint operation of the pulsed magnet with the
synchrocyclotron require
some rearrangement of tbq control system to guarantee that no
particle was emitted
without accompaniment of a pulsed magnetic field. "The authors
express their thanks
to V. 1. --- Danilov. T. 9. TomilInap and 1. B. Yanchavich for
carrying on the work.
The authors are griteful to IL 1. Gurevich and V. P. Dzhelepov for
their constant
Interest Knd help in the work. The authors express their tR&dm to
V. I. BmIrnar,
Ye. G~~, 1. P. lAvrushking Yu. V. Haksimov, A. V& bbestoy, Vs I.
lv"ov, 1. 14-1
d 9.777.1a-resov r
ar~s~c'iWi, A. F. Burtsev. B1._V. DeStyarev, X. P. on 0
their aid in maintaining an-d-;jWr-&T1F-g-fhs e-q Mpmn 7-Orig. art.
haso 11 figured
and 1 table.
ASSOCTATIONt Institut stowdy energil. OW, Moscow (initituit of
Atomic Eder Gw~t
1YaP OUST I !II ZFAj MIF2
SUBRITITIDt 1IJunfA 1XCL1 00 90 CODItvvp
P0 Mr GOV, 001 0TURs 003 ATD "M I
%
Q~2/2

BAZAROVp L.Sh.; DOBRETSOVA, I.L.; YUSUPOV, S.Sh.
Characteristics of the distribution of fluorine
around a
chamber pegmatite in granites. Dokl. AN SSSR 157
no-5:
1135-1138 Ag 164. (MIRA 17:9)
1. Institut geologii i geofisiki Sibirskogo
otdeleniya AN
SSSR. Predstavleno akademikom V.S. Sobolevym.

DOBRETSOVA, L.A. .
Vegetation ii the upper kla (Charky) V&Uey. Nauch,soobs
IAFAN SSSR
noo2z79-88 159, - (KIPA 16:3)
(Charky Valley-Vegetation and climate)

KARAVAYEV, M.N.; DOBRETSOVAO L.A*
Brief outlIne of vegetation of the lower Nera Val-ley
(upper Indigirka
Basin). Bot.zhur. 49 no.3-1:1544-1559 N 164.
(MIRA 18il)
1. MoskovsIdy gosudarstvennyy universitet i Yakutakiy
filial Sibirskogo
otdoleniya AN SSSR, g. Yakutsk.

usSR/Gonoral and Systematic Zoology. Insects. Harmful P
Insects and Marldo, Foddor Poeta,
Abs Jour Ref Zhur - Biol,, No 3, 1959t No 11609
Author Rokach V,N., Dobre_tzo_y_o,_T..Aj__
Inat Odessa Agricultural Institute
Title Data on Posts of Seed Alfalfa and on Their Con
trol in the South of the Steppe Zone.
orig Pub : Tr. Odossk. s.-kh. in-ta, 1957, 9, 50-58
Abstract : The principal pests of the lst generation seed
alfalfa are the alfalfa-leaf weevil and a complex
(11 species) of bugs (B), the most harmful of which
are the alfalfa and beet B (in some seasons of the
years 1950-1954 either one or the other predoiainat-
ed). Other B species are considerably less num-
erous and less harmful. The biophenology and
dynamics of the B species complex are presented.
Card 1/2
20

USSR/Gcneral and Systematic Zoo~ogy. Insects, Harmful- P
Insocto and Aourdis, Fodder Posts.
Abs Jour t Rof Zh~r - Blol.., No 3, 1959, No 116o9
It is recommended to harvest the alfalfa for hay
not later than the end of May (prior to develop-
ment of the B wings), using a low cut and removing
tho mowed hay from the alfalfa field; at the ap-
pearance of considerable numbars of larvae on the
seed alfalfa, a twofold treatment by DDT or BHC,
after hatching of the larvae and before blosaoming,
is also recommended. Experiments have demonstratod
the advantages of summer nidulato and wide-row
alfalfa sowin8s, Biophenology, kynauics of the
alfalfa-leaf weevil and measures for its control,
00 A*P, Adrianov
Card 2/2

Spont-aneous poly
.ploid and haploid, suC-r beet fc;-,,-s
plants. Dokl. AN SSSP 160 nu.2:454-4~7 Ja 165.
1. Institut, tsitologii i genetiki Sibirskogo
otdelen4.,,ra A.11
Submitted May 30, 1964.

,DOBRIETSOVA, T.-B.; LUTKOV, A.N.; MJ=IIOS, A.M.
. ..... - . I
Spontaneous polyploid and haploid forms of twin 6ugar bpet
plants.
Ddk1, AN SSSR 164 no,4:921-924 0 165- (MD-A 18:10)
1. Institut tsitologii i genetiki Sibirskogo otdolenfya AN
SSSJ .
Submitted July 200 1964.

DOBM, A. (Narodnaya,Respublika Bolgarii)
--------- -1
Measuring the work conplwdty of engineering and technical
workers and employees. Biul.nauch.inform,itrud i zarPlata 5
no.11:61-66 162. (MIRA 15212)
(Technicians in industry) (Job analysis)

DOBREV, A.
Measurement of the complexity of work of technical
engineers
and office employees. Pod org 17 no,10:4.77 0 163.

DOBREV) As.ens,kand,. n,a ikonomisheakite nauki
Improvement of the organization of labor wages and
personal
material interest. Trud tseni 6 no. 1: 52-64 164.
1. Chlen na Redaktsionnata kolegiia,, "Trud i
teeni".

DOBREV, A.
System of work and wW9 in automtio production lines in
the
food industry. 'Sots.trud. no.2:60-65 F 157. (MIMA 10:5)
(Wages) (Assembly~line methods)
-,-
.1

_VvIvi~,vt A.
DOBRIV, A.; LkUIVANOV, P.
Intra-osseaua locai novooains anesthesia in surgery in
children and
adolescents, Khirurglia. Sofia 10 no.1:74-76 1957.
1. Detski sanatorium - momin prokhod Gl. lekar: St. Kraja#v.
(PROGAINS. analgesia and anesthesia,
intra-asseous in child. & adolescents (Bml))

DOBRLIV, Ang.
Case of traumatic aneurysm of the femoral
artery.
Xhirurglia, Sofia 9 no.3:269-2?0 1956,
(ARTIMM, F]MRAL, aneurysm,
traum. case (Bul))
(AMMTSM,
femoral artery,-traum. case (BUI))

TOICHSVA-BO3XOVSKA, Xu.
Rehabilitation of i=obilized patients. Xhirurgiia, Sofia
11 no.4.'364-
367 1958.
1. Detski sanatorium -- momin prokhod. G. lekar: D.
Petrunov.
(POLIOMULITIS, surgery.
rwoplast7 & orthopedic rehabil. (Bal))

DOBREV. D.
il
Deoiding factors for t4q ouccess in
RAdio i televiziia 11 iS-221322-323

!AAWEV, A., insh.; DOBWI D.1 SOTIROV3, VI.
r---------------------
Economio impprtance of feet heading for the development of the
Gorbuso
State Mining Enterprine, Min delo 17 no.8:3-4 Ag ~162.
1. Durzhavno minao predpriiitie "Porbuso",

DOBREV, Dimitur
Linoar operatorn
Oodiahnik fit 55

11 1 MMV~M.; BDCHAROV, S.; KIROV# K.; !j~y ~D-
Clinical aspects ard treatment of cancer of the
prostate. U~ro-
logiia. no.5243-48 162. (MIRA 15s12)
1. Iz urblogiebeekogo otdelemi7a. (savo Ma
lenfedshiyev) oblastnoy
bollnitay Imeni, Racho Angelova,, Sofiya.
(PROSTATE GLAND-CAMER)

PANUROV I N
vt~WW~D.
Predominant orientation of cryatale in the
e2ectrolytically
deposited iron. Doklady UN 15 no.5:519-522 162.
1. Submitted by Academician R. Kaisheve

PANGAROV~ N.; RLBBU.-2-
Predominant orientation of the crystals of
electrolytically
precipitated iron. Izv Inat fiz khim 2:101-116
D62.

BOGDANOV, P.; DOBREV,D.; KOSSE7,& ; PIRYOVA,. B.
k method of measuring the blood pressure of man in a water
environment. IbU. Bolg. akad.nauk 17 no.103-95 1&~
1. Submitted by Academician D.Orahovats.

DOEMEV MflTUT?
Finite automata. Fia mat spisanio BAN 7 no.1 '3-47
"
, Lj, I.. .

-PQMEY+-D-
ControUing the smoothness of surfaces by the
comparative method. P. 32.
Vol- 5s No* 3s 1956
TEZHKA PROVMSIU~NOST, SOFIYA, BULGARIA.
SOURCEs ZEAL, LC# Vol- 5,, No, 10, Oct. 1956

DO9Wa"---.1
SCIENCE
Periodical: IZVESTIU. Vol. 3, no. 1, 1958
DOEREEV, D. Integral representation of a class of
functions, p. 43.
Monthly List of East European Accessions (EEAI),
IC. Vol. 8, no. 2
February 1959, Unclass.

DOBREVy Dimitur; SEMOV., Blagoveist
Linear programming. Pis mat upisanie BAN /+
no.31200-213 161#

MITREV, St., inzh.; ROBFMV --D0-# inzh.
4
Invootigation on the shriebment of the talf. in the
deposits near the
ViLlage of Zhivkovo, Sofia District. Min delo 16
no.11:17-20 161.
(Tar)

DOBM, D.
"Results from an Inventory of Cultivated Plants," p. 433.
(GORSK0 STO.PANST-Vc)) Vol. 9,
no. 10, Dec. 1953. Sofiya, Bulgaria.)
SO: 11-1onthly List of Ea-st European Accessions, L,", Alol. 3,
No. 5, .-.,Iy 1)54/Unclassified

D 0 8AS V , D .
"Our Successes in the Stru"le
(KOOFEMTMU ZMELIE., Vol,
SO., Monthly List of East European
No. 5, May 1955, Uncl.

,, - UorSKO Stopanstvo
Ramats and lessons from fulfillment of the reforestation plan for
1954 and tasks for the
1955 plan. P. 97
(GORSKO STOPANSTVO VOL. 11, No 3, Mar. 1955)
SO: Yonthly List of East European Accession, (BUL), IC, Vol. 4,
No. 9. sept. 1955, 'Uncl.

DOBREV, D.
Tsvetkov, K. How we raise heavr lambs. p. 27.
KOOPERATIVNO ZEMMELIE; SOfYiaj Vols 11, no, 3, Plar. 1956.
SOs Monthly List of East European Accessions, (EFAK), LC, Vol. 5,
No. 6 June 1956, Uncl.

DOBMV, D.
DOBREV, D. Experiment in affor6stat on with white pine
seeds and seedlings in
in unplowed soil. p. 188
Vol. 12, no. 4, Apr. 1956
GORSKO STOPANSTVO
AGRICULTURE
SoMa, Bulgaria
SO.- East European Accession, Vol. 6t No. 3, "arch

DORRE7j, D.; PESHEVp 0.
- -------
State forest belts near finishing. p. 68.
(GORSKO STOPA~WVO, Vol. 13., no. 2, Feb. 1957, Sofia, %-1garia.)
SO: Monthly List of East European Accessions (EFAL) LC,, Vol. 6,
no. 12, December 1957 Uncl.

POBREV, T).,- LIUDSKANOV, K.
Reforestation and protection from flood waters %idch erode land on
denuded
hills in the past and present according to figures and facts. p.
132.
Forestry in some European and Mediterranean countries. P. 137.
(r-,ORSKO STOPANSTVO, Vol. 13, no. 3, Mar. 1957j, Sofia, Bulgaria.)
SO: Monthly List of East European Accessions (EM-) LC, Vol. 6; no.
12, December 1957 Uncl.

DOBREVV D.
Weak and strong Inversability
no.10-.881-883 164.
1. Submitted Jima 6,

TONDV, L.., ot Imnd. na medits. nauki; DOBBST, D.
Sloop therapy of hypertension. Suvrem.med., Sofia 6 no.3:70-75
1955.
1. Is klinikata po fakultetslr~-terapiia pri Visshlia meditsinski
institut T.Chervenkov - SoMe. (sav.chl.koreep.prof. K.Chilov)
(SLXEP,- therapeutic use,
bVpertension)
(11rPEMNSIOR, therapy,
sleep ther.)

NXICHIV, S.; DOBRBV, D.
-
3ffect of biomWain on the microoorgEmisms most frequently
responsible
for infections. Suvrem. mad., Sofia 8 no.6-.30-35 1957.
1. Utedra po mikrobiologiia pri VMI; Soflia Direktor:
akad. VL. Markov
Rquohnoiseledovatelski koshno-venerologichou inatitut;
Sofiia Direktor:
prof. Dr P. Popkhristov.
(CHLORTIMMLINZ, effectop
on common ptithogens (Bul))

DOBRIV, D.
lZ C", ~Oi
authosis n1gricans associated with gastric cancer. Suvrem. med.,
Sofia 9 no.8:100-103 1958.
1.(Iz Nauchnoialedovatalskiia kozhno-venerologichen Institut v
Sofia
Direktor: prof. P. Popkhristov),
(Aumos is maRicARs, compi.
cancer of stomach (Bul))
(STOMkOH InWIASMS, compl.
acanthosis nigricans (Bul))

NlKOIA)V,P.; POPMISTOV.P.; BOTA IEV,Ts.; DOBR-vV,D.
Clinical studies on anti-inflammatory and ahti-allergic
properties
of Digitalis lanata in certain skin Oieases. Suvrem. med.
Sofia 11
no.2-3:78-80 160.
1. Is Iratedrata po farmakologiia pri VMI - Sofiia,
Rakov. na latedrata:
prof. P Nikolov; i NIXVI q Direktort. prof. P.
Popkhristov.
iSKIN die.)
(DIGIULIS ther.)

DOBW, D.
L case of biomycin hypereeneltivity, Suvrem med.,
Sofia no.7-8:
166-169 6o.
1. Iz Nauchno-iteledovatelskiia kozhno-vanorologichan
institut,
Sofiia (Direktor prof. P.Popkhristoy)
(CHLORTETRACYCLINE toxicol)
(DERNATITIS NEDICA M TOM case reports)

DOINOVP M.; DOBREV, D,
Da some medical and nedico-social probleme of the old
age* Nauch. tr.
vissh. mod,, inst. Eofia 40 no.1179-99 161.
1. Preduta"na ot prof. M. Hashev, rukavod. na Katedrata
po, vatreshni
boleBti.
(GEM7RICS)

)RODOV, Kh.; DOBPM, D.; ANGAROV, G.
Eleotrophoretic changes in serum proteins, its comparison
with flf-4cu-
lation reaction and blood sedimentation in influenza
patients during
the course of the 1957 epidemic. Nauch. tr. vissh. med.
inst. Sofia
40 no.2:103-114 161.
1. Predotavena ot prof. M. Rashev, rukovoditel na
Katedrata po vutreshni
bolesti.
(INFLU M A blood) (BLOOD PROTEINS)
(BLOOD SEDIKENTATION)

AASHEV.. M.; DOBREV, D.; BELOEV, I.; ANGAROV, G.;
NIKOLOVA, N.
On the problem of some biochemical changes in
atherosclerotic patients.
Naueb. tr. visah. med. inst. Sofia 40 no.6*.1-16 161.
1. Predstavena ot prof. M. Rashev, rukovbditel na
Katedrata po vutreshni
bolesti.
(ARTERIOSCLEROSIS blood)

TENCHOVf G.; KHMHIDEKOV, G.; DOBREV, D.
Matilating arthritis and its roentgenological
characteristics,
Suvrem med.. Sofia no.4/5'-183-188 161.
1. Is katedrata po rentgenologiia i radiologiia pri
Inatituta za
spotoializataiia i usuvurahenstyuvane na lekarite.
(Rukovoditel na
katedrata prof. G. Tenchov.)
(ARTMITIS RHIMTOID radiog)