SCIENTIFIC ABSTRACT USATOV, A.I. - USELIS, J.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001858110019-7
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: March 14, 2001
• Sequence Number: 19
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

KURNOSOV, A.M., kand.t4ikhn.naukj USTINOV, M.I., kand.tekhn.naul.; ZYKOV, V.M.,
kand.tekhn.nauJ:; LIKALITER, L.A., gornyy inzh.; ANISIMKIN, A.Ye.,
gorrWy inzh.; USATOV, A.I., goinyy inzh.
Use of design nethoda in determining optimum parameters for coal
minfin to be reorganized, Ugoll 40 no,902-58 8 165.
(MIRA 18:10)
1. Inotitut gornogo dela imeni A.A.Skochinskogo (for KtLrnosov,
Ustinov, Zykov, Likaliter). 2. Luganskproyekt (for Anisimkin,
Usatov),

Von- 'D r
AUTHORS: Cherdyntse;r, V. V., Inabayev, Ye. A., 3urkov, Yt;. "'.3
Orlo-..,, D. P., Usatov E. P.
TITLE: Excess u235 in rnt-,iietitc with incre%sed actinit7.,, content
P-EMODICAL: Geolchimiya, no. 4, 1960, 373-374
Tr.'VL; The mCnetite in a peervitite vein wan foLmd to have a LiE,h contc;nt
of U235 and actiniwa. Tho contents of radiaelements iiar, 1.3 of
uranitun and 10 ppm of thorium. The Ac/Ra ratio exceeds the nom.-il vLlua
by a factor of 0.3. The a~,e of the znLierzals, is apl-roxilml-Itely 1_-~O
*Ilion years uith certn-inty, however, less than 3 0 - Mon ye-rs. Tile
r
d 0 ~d e
present publicat-lon i,--~pcrts the re-sults obtained in detemairiations o4f t,ho
U235/U'38 ratio. From the ratio of the munber of Msion fraj,-.ents jrodu~;ed
by thermal neutron irradiation to theoC-acti-rity of the sanaj)le, the
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Excess t?" in niaenetit-~ with... N,02/X 5.50
U235/U238 ratio w.18 fowid at 1.18 '1 -3.06, wl-iich --fter correction for the
pr-asence of other radiloeleriwnts alt-,rs to 1-30 t 0.10, ,-f
thcc(-srectra in the alpha-spectrometer at Kazar-Lfiskiy univtr:31'.c" (Kazakh-
University) yielded a .,s,;io L;235/U238- - 1. 6~,) + 0.13, and, in the al-~ha
spectrometer of the Inst-:tut EeoM-,imii V. 1. VenTiad~~;'KoLo alu~v '5=1
(Institute of Geochemdstr~v --ieni V. 1. Veniadskiy AS a -,al or
ue I
1-5 't 0.1. The latter `(1termiinntion c-.rr-ied n;zt bv Yu. A. S11-1~ov.
A last scries of ricaaurc~.-,cnts in the alpha analyzer Kav-;Ij
University), carried out 1--v D. P. Orlov cave a value of 1-40 t 0.15. This
excess of U235 in the manivnetite -,,,-Ith increased actinium content vu-. only
be explained by the existence of a transuranic isotolle in nature iu,v to
the present day, which decays to actinium and the odd-nu~mbered ur,-.-n-i'lm
i.sotope. I. K. Gerlinp_ is mentioned ir the publication. There --,re
1 fij:ure, 1 table, and 9 references: 9 3oviet-bloc and 3
ASS'.i: Kazakh State Ur4iv im. S. 1% Jarov
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AUTHORSt Isabayev, Ye.A.; Usatov, E.P.; Cherdyntsev, V.V.
TITLE: Isotopic composition of uranium In natural objects
PERIODICAL: Radiokhimiya, v. 2, no. 1, 1960, 94 - 97
TEXT: In the present work the isotopic composition of uranium was inves-
tigated in some primary and Eecondary natural minerals (molybdenite, uraninite,
magnetite, thorite, cinnabar and schi-cekingerite), as well as In water being in
contact with granite mountain regions. Separation of uranium Isotopes, namely of
the U238 mother (UI) and the disintegration product U234 (UII) was already ob-
served in natural objects by V.V. Cherdyntsev and P.I. Chalov FRef. .1: Tr. III
sessii Kom. po opred. absolyLitn. vozrasta geolog. formatsly (Prioceed-Ings of the
third session of the Commission for the determination of the absolute age of geo-
ological formations), Izd. A11 SSSR, 175 (1955~] and was later ztudlei~ by Starik
et al. [Ref. 2: Geokhimiya, 1, 5, 462 (1959)J, V.I. Baranov et al. Ref. 3: Ge-
,,.okhimi a. 1, 5, 465 (1959)] taid P.I. Chalov LRef. 4t Geokhimiya, 1, 2, 265,
M.
~1959)1. Being less firmly bound to the c., stal lattice of the mine:ral, UII Is
qften enriched in secondary uranium minerals or natural water, while a decrease
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Isotopic composition of uranium In natural objects A057/A329
in the UII/Ul ratio is observed in minerals exposed for long time to the effect
of natural water. The present experiments were carried out with an et-analyzer
(designed by Ye.A. Isobayev) containing a six-electrode-el3ctron Impulse chambc~r
as Impulse indicator. The uranium samples were placed on six disk-shaped high-
voltage electrodes, which were fixed on a cylinder. Rotating the latter the E;am-
ples were brought into measuring position (without dismantling the camera), and
the spectrum of the samples was immediately compared with the otandard. Two am-
plitude analyzers were used, one with 19, the other, with 50 channela. Uranium
was extracted with ethyl ether from BNO3 solutions of the ore and was electrolyt-
ically deposited. The inten:3ity of the spectral lines of Ull_gnd Ul (see Figure)
was determined from the area limited by the line, thus 2 - 10 g uranium could
be determined with 10% accuracy in 3 h. Actually the uranium content was n . 10-4
g and the accuracy of UIIAJI measurements was 1 - 3%. In some samples the rela-
tive u235 (AcU) content was determined, measuring the activity of fission fral,-,-
ments effected by neutrons from:xPo-Be source. Revising previ'mis determinations
[Ref. 1; Ref. 5: Sbornik trudov KazGu. Optika, yadernyye protsessy, 63, Alma-
Ata (Collection of proceedings of the Kazakhstan State University. Optics, nli-
clear processes, 63, Alma-Ata)(1959)], the isotopic composition of uranium in
several molybdenites (having different excessive contents of Ac) was investigated,
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Isotopic composition of uranium in natural objects A057/A-'L>,-
the ratio UIVUI in schrae.-