SCIENTIFIC ABSTRACT LOYKO, N. A. - LOZINSKIY, S. M.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R002201820015-0
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 99
• Document Creation Date: November 2, 2016
• Document Release Date: September 19, 2001
• Sequence Number: 15
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

USSR
SUMIN; P. YE. et al., Inzhenerno-Fizichookiy Zhurrva, Vol 19, flo
-Nov 70, PP 933-935
Ne D -Ke and H ting the experimental
K
7- 2 2-Ar, The authors include a table depic
dIffusion coefficients at a pressure of 760 mm Rg.

USSR
Lasers &:Miasers
UDC: 621-375.82
SAMSON, A. M., KOTOMTSEVA, L. A., GORCHAPUK, I..M.
"Emission Kinetics of a Laser With a Nonlinear Delayed-Action Element"
Minsk, Kinetika generatsii OKG s nelineynym elementom zapazdyvavushchego
deystviya. In-t fiz. AN BSSR (cf. English above. Institute of Physics of
the BSSR,AcadeW of Sciences), 1973, 44 pp, ill., mimeo. (from RZh-Fizika,
No 11, Nov 73, abstract No 11D1330)
Translation: On the basis of balance equations, an analysis is made of the
kinetics of operation of a laser with a nonlinear delay-od-action element.
An example of such an element is a Kerr cell which increases or reduces
laser losses with increasing emission power. An analysis of these equations
showed that with certain values of delay tire and paramter of nonlinearity
the lasers emit regular undamped radiation peaks with a re.cur.rence rate
approximately quadruple the delay time, The authors deternine the regions
of variations in narameters of the laser and the nonlint~ar elentent where
such pulsations axise. An investigation is made of the influence of noises
on the kinetics ol-~' laser creration in the mode of undamped ptilsations Gf
emission power, and their stabilizing action is observed.. Angilltical evalua-
tion are illustratedby computer solution of differential equations. Bibl. 32.
1/1
Ff

USSR UDC: 77.018
IVANOV, A. P. and LOYK0, V. A.
"Nathematical Analysis oil the characteristic Curve of Photolayer
Blackening"
Minsk, -Zhurnal Prikladnoy flpektroskopii, No 2, 1973, pp 300-304
Abstract: In an earlier paper published by the authors named above
(Yestay AN BSSR, ser. fyz.-mat. navWc, No 5, 1971, p 113) the char-
acteristic curve for blackening or pliotographic material -wrao, ccm-
puted for two limiting situations., when the dimenzions of the photo
emulsion grains are much larger or much smaller thau the wave-
length of the incident light. The present paper presents an ana.-
lysis of the effects of various factors on the characteristic curve
for coarse-grained emulsions. In thi.9 theoretical nnaly~;io th'~,
authors begin with an equation, dorived in the earlier article, for
the directional optical density. The mr.,Einin(,~,,~of 1he parameterk; in
the equation ia given. Tho autbor'o RaSellt thaA' % Idmilar mat-he-
matical analycia can be used for fine-grained photolayers.
Vi
-71

USSR UDC 77.01.011
~IVANOV, A. P., LOYKO. V. A., Institute of Physics, Academy of Sciences BSSR
"The Quantum Sensitivity of Photographic Emulsion Grai.ilsfi
Minsk, Do),-lady Akademii nauk BSSR, No. 4, Apr 72, pp 50e-310
Abstract: An approach to making a quantitative analys1-11 of the prchabillty of
the development of a grain and hence judging the :~ensltlvity of a plhotograpbic
grain is presented. The quantmm sensitivity of a grains -;s ~~:tfined as the
minimum number of protons which must be absorbed in ordi~r tofobtain the Capa-
city for developm. ant, i.e. , to f orm a conter, from 20 min i,,11vet, atom:s .1-1 is
noted that a develop-ment center consisting of a certain numbor of' silvtzw atcj:nis
r - must be f ormed in one of the sensitivity centers (q1t tra-n) W
the pboto-
min
graphic grain for the develcpment of the grain. It is ilated that whic,n there is
one.trap there is iio difficulty in finding the conditiow; for 111ackening of: the
grain but if there are several traps in the grain, a det'ermination of the quar.-
-~ur,
tum sensitivirj is since compmVition for ph-~Iton (-,~-pturc! oc,
between the centers, i.e. , probability are
1/2

USSR
IVANOV, A. P., LOYKO, V. A. , Doklady Akademii nauk NO. Apr 72.,
pp 308-310
conditions one can only speak of the probability of the dev~~Iopmenr of a
_;rain
P which has absorbed some given nxnber of quanta i. Aii analy-tical, expires.-~ion
is derived for P,,(i), where N is the number of identicM. traps in a grain.
Graphs are presented showing Pjj as a function. of i foil z,,,in = 2 and 4 and
N = 1, 4, 10, 20 and 100. The graphs show that the probabil:Ity P reachi,.~-, Z!
value equal to unity more rapidly for smaller 'mill Thf--! vaDiE!n
of the probability for the devoloirment of thL- grain a.-(i. jilAileved Tor siiiiall. ~
considerably different from small r. It is.noted that the data obtained can
be used for a quantitative analysis of the probability of th,s.~ d,:~vclopmerjL of a
grain as a function of factors determin-ina the maturity of the emuiz-,C)n and
also can be used for jud-g-Ing the sensitivity of a photographic grain.
2/2
- 50

Optics and Spectroscopy
USSR UDC?7-01B
IVANOVt A. P.# and LDYKG V- institute of Physics, Aeadomy of Sciences
A.
S
Belorussian S H
"Mathematical Description of Characteristic Density Curve of Photographic
Minsk, Izvestiya Vmdemii Nauk BSSR, Seriya. Fiziko-Matematichaskikh Nauk, No
5, 1971# PP 113-119
Abstracts Using methods of statistics and scattering theory, the authors de-
rive an equation for the characteristic curve of a photolayer for polydispersed
fine-grain and coarse-grain emulsions, permitting a OtAile(i analysis of den-
:81ty -as & function of exposure for various parameter values of the photosensi-
tive material. The attenuation index of developed layers of unit thickness is
determined for fine particles (Rayleigh scattering) and for coarse particles
with the use of methods of geometrical optics. 7be directional optical density
is calculated from the known distribution of light in the layer. It is shown
that the most important par&uetars on which the shape of thit characteristic
curve depends are constants of the particle size distribution function. the
1/2

INN ill&11111;~Agapu
USSR
IVANOV, A. P., and LOYKO, V. A., Izvestiya Akademii NAuk BSSR, Seriya Fiziko-
Matematicheskikh Nauk, No 5, 1971, PP 113-119
optical density of the layer, the relation of the atteauation indices for
maximally developed and undeveloped material, and the idnimum quantum number
necessary for the development of grain having one photoelectron trap.
2/2

WC 614.72s613
USSR -155-3
WYT A. Q KOCHANOV, M. H., and ZAUGOL'NIXOV, S. D.i Institute of Bio-
physl6i.9 Otistry of Health USSR
"Correlation Between the Vaximum Permissible Concent3j~tions of Some Chomical
Substances in the Air of Industrial Plants and in the~Atmorsphere of Res.1-
deatial Areas"
Moscow, Gigiyena Truda I Professionallnyye Zabolevanlya, No 1971
pp 15-17
Abstracti On the assumption of a -mathematical relatlonship b!!tween the toxicity
and maximu;n permissible concentrations (NPC) of ehemical compounds In the air
of industrial plants and in the atmosphere of residential. areas, the author
worked out the following equations for use in determining the RPC of 40
different substances (hydorcarbonap phenoln't ketones, ~lcohoL-cj, etc.)j
lgx - 2.32 +1.16 1gy r - +0.65
I&r -L-2.00 + 0.86 lgx r - +0.65
where x: is the FPC in the air of an industrial plant, y Is the mean daily XPC
(in milligrams per m3) in the atmosphereof a residential art-,a, and r is the
correlation factor. The following equations were deriwd from a comparison
of the mean daily W and maximum single (Y) MPC in the atmo-sphere oil a resl-
1/2
75

USSR
LOYT, A. 0. et al., Gigiyena Truda i ProfeasionalInyle Zabolevaniya, No 5,
1971v PP 15-17
dential area,
lgx 0.54 + 1.16 Igy r +0.88
1gy 0.47 + 0.84 IgX r - +0-55
The calculated HPC were fourA to deviate from the experimentally
determined IIPC by 2 orders in only 3 substances and by 1 o=,Ier in an the
others.

USSR UDC 621.396.666