SCIENTIFIC ABSTRACT KHRISTOV, M. - KHRISTOV, V.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000722330007-7
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: September 18, 2001
• Sequence Number: 7
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

KHOLECHEK., L., inzh.; KHRILSTOY, M, inzh.; KOSTOV, V..,inzh.
International Symposium on Unwoven TeXtil8B. Tekstilna
prom 13 no. 1:39-40 164.

KHRISTOV, Metodi.
Mqchanized harvesting of vetch hay or mixed vatch and
barley hay. Izv makh selsko stop BAN 4 63-74 163.

KHRISTOV, 14IHAIL
Khristov) Mihail Prilozhna botanika; leirtsii cheteni na studentite po kulturno
Inzhenerstvo. S6fiyap Nauchni tesli (1947) 226 p. (Darzhavna politelr-hnika, no. 34)
(Lectures on applied botarW for university students.)
S02 MONTHLY LIST OF EAST EUROPEAN ACCESSIONS, L. C., VOL. 3, NO. 1, Jan. 1954, Uncl.

KHRISTOV, YIYJ1AIL A.
Khristov, Mikhail A. Furazbno proizvodstvo s osnovitp, na botanikata; lektsii za
studenti po veterinarna meditsina. (Sofiya) Nauka i izkustvo (1951) 260 p. (Universitetska
literatura) (Forage production according to the principles of botany; lectures for
students of veterinary redicihe.)
SO: !'ONTHLY LIST OF EAST LUROFEAN ACCESSIONS, L. 0. Vol. 3 No. 1 Jan t54 Uncl.

KHRISTOV, M.
Fodder in specially prepared trenches. p. 15.
Vol. 6, no. 8., Aug. 1955
101ASHINIZIP-00 ZEI-EDELIE
Sofiya, Bulgaria
So: Eastern European Accession Vol. 5 No. 1 Jan. 1956

NIMTOV m
KHRISTOVp M. VAchanizing s1loing. p,12.
Vol. 7, no. 5, May 1956, MLSHINIZIRANO ZENEDELIE,, SOFIYA, BULDARIA.
SOS Monthly Ust of But European Accossiow, (EUL), 14, Vol. 5, No. 10,
Oct. 1956.

KHRTSTIV, M.
Increasing production of the straw-cutting machine. P. 30.
KrYINRATIVY) ZEMED&JE, Sofiyaq Vol. 11, no. 4, Apr. 1956.
SO; 14onthly List of East European Accessions, (EFAL), LC, Vol. 5, No. 6 June 1956,
Uncl.

KIMISTC-11, M. ; LAZAROV, V.
Ensilaging above grounct p. 26.
(Kooperatvino Zemedelie. Vol. (12) no. 6. June 1957. Sofiia, Bulgaria)
SO: Monthly List of East European Accessions (EEAL) m, Vol. 6, no. 10, October 1957. Uncl.

KMSTOV, M.
---
Results and conclusions from the botanical analysis of samples of hay from certain
regions of Bulgaria, P. 79,
IZVESTIIA. Soffia, Bulgaria, Vol. 10, 1959.
Monthly List of East European Accessions (EUI), LC, Vol. 9, No. 2,
Febrnary' 1960. Uncl.

GAIDAROV, N.; MASLINKOV, Iv.; MDNOVO Iv.; KHRISTOV, M.; KHAMANOV, St.;
DDUTROV, I.
Mechanized harvesting of maize. Izv nekh selsko stop BAN
1%115-132 161.

KHRISTOV. M.
Hschwdzed hay harvesting in the mountains. Izv mekh selsko
stop .BAN Is133-145 1610'
'.. I t.
I
r. ( -
I I

KHRISTOV Mikhail; PALAIPTVA-KOVAUETEVSKA, Maria
Observations on thr dpvolopment and productivity of pure
alfalfa as compared to grass mixtures. Selskostop nauka
no.1:32-43 '63.

DASKALOV,- @hr., akad.;,STOEV, Kunlo; BOGDANOV, Vasil, at.,%n. sutr..

t st. nauchen
metodip at. n. - su r., KHADZHIOLOVY Azen@.
AM519y)
,
n. sutr.; BLIZU
sutrudnik, AKOY G6orgl, prof.;
TENKOV, Bolem, ml. n.@sutr.; POPOV,.Rumen

ScUn6o' on the of&n'm)mq.for Nauka i7IQjth' mladeah 15
rogrexa..@
no
7/8t6-10
.
,
1. Zam. predsedatel na ASN (for Daskalov). 2. Glai@ep nauchen :@i- 4;3,
sekretar na ASN (for SIL)-10. 3. Nauchen sekretar-iq A@N'(for

4- Institut za'mekhanizatsiia na sel@k6gb stopanstvo
Bogdanov).
'
'
(for Khristov
.iDirektor na Instituta po neofiaacheaka i obshta
). 5
'
kit'naikov). 6. Predsedatel-ji@'.K6misiiata za
khimiia pri BAN (for
nauka i tekhnicheski progr6s pri TsK na.DKMS (for 'Popov).

Y'.
io.

KHRISTOV, M.A.; NIKOLOVV M"r.
Development of the embryonic sac in certain species of the
Poa genus. Izv Inst bot UN 7s201-223 060,

;0 i-,@
KilRisi,ov KRUFIMVAI
@-@-2@ ,
Organogeriesis of Hardus Stricta L. lzi Tsentral Irib genat 1-,139.
148 163.

KHRISTOVY Marin Ivanov, inzb.l nauch. sutr.
Knitting of woolen viaterials for outer garmendon circular
frame. Trud Inat tekstil prom 2tI27-137 162.@,

KHRIST IT.; VIKTOROV, St.; NIKOLOV, G.
. I'll --Y" @7- @
Introduction of metallic head cores for molds, a nev way
in casting. Ratsionaliantslia 13 no.11t17-18 163,

Ip
AL44024709 BOOK EXPLOITATION B/
Khristov, Nikola T. (Engineer); Zakbariev, Kiril S. (Engineer)
jvices for automatic control and regulation of industrial process-
s. v. ls' Devices for measuremeni and control (Ustroystva sa.
e
avtomatichen kontrol i regulirane na proizvodstvenite protaosi.
t. 1: Ustroystva-za izmervane i k6ntrol) Sofia, "Tekhnika,n
62. 0405 p. illus.,mbiblio, graphs. '2583 copies printed.
TOPIC TAGS: instrumentation, automatic control instruments, ton-
perature measurement, ptessure measurements, vacuum measuremente
flow measurement, level measurement, beat content measurement*
humidity measurement, dust content measurement, stream control,
feed water control, boiler control
4V
PURPOSE AND COVERAGEs The book deals with measurement and control
methods used in manufacturing processes, and with the apparatus and
circuits used for this pUrpose. The construction of most types of
Cwd

A144024709
apparatus is described, and industrial applications and test and
@design procedures are given. 7bebook also contains a completepra"s-
cedure for throttling and control devices. X t is for engineers and
'technicians engag4@d in operatione erection, and design of measure-
ment and control apparatus for industrial enterprises and power
generating stations, and can also be.used by technical personnel'
in the enterprises.
.TABLE OF CONTENTS (abrid ed]:
1,19
!Foreword 3
;A. Temperature measurements
B. Pressure and vacuum-measurementp 101
;C. Fluid flow and fluid,quantity-measurements 161
D. Level measurements 29S
E. Control of gas composition and gas heat @*ntent. 17
Card 2/4 -J

KHRISTOV.,P, .
For a better knowledge. Radio i televiziia 12 no,41101 063

KHRISTOV, PUii-IAN
Khristov, Purvan Parkoustroistvo i parkova tekhnika. Oubreno kato uchebnik za srednite
i prakticheskite zemedelski uchilishta. Sufiya, Zemizdat, 1551. 296 p. (The layout
and car; of Parks; a textbook)
So: The Monthly List of '5ggt European Accessions L C. Vol 3 No. 1 Jan. '54 Uncl.
gv, i -,i@ -"g
R

KMSTOVI P,
- .
Regional competition in radiotelegraphy at Lovech. Radio i
televiziia 12 no.8428 163,
I

KHRISTOV, P.
KHRISTOVp P. A case of a very intensive rainfall in Bulgaria. p. 45
No. 3P 1956 XHIMOU)GIIA I METEUROTMIIA. Sofiia,, Bulgaria
SOMICE: East European Accessions List (EKAL) Vol. 6, No. I+ April 1957

KhRISTOV, P.
"Strong winds in Bulgaria."
KhIDROLCMIA I kMCROLOGIIA., SoMa, Bulpria., No. 6. 1958
Monthly list of FAST LZROPEANt"tCCESSIONS (EEAI), LC, Vol. 8. No. ?. July 19,49, Unclas

KHRISTOV, P.
Rationalization in the enterprises of the city of Tolbukhin. p. 17.
RATSIONALIZATSIIA. Vol. 6, no. 29 Feb. 1956
Sofiia, Bulgaria
SOURCE: FAst European kccessiona List (EEAL) Library of
Congress, Vol. 6, No. 1, January 1957

DOIBRZV,Ia. ; MISHEV,P.; SHOPOV,I.; KHRISTOV,P.
On the treatment of cholecystitis according to clinical material
from the period of 1954-1959.'.Pirarglia,gof iA 13 no.2-3:208-211 160.
1. Iz latedrata.po fakultetaka khirurgiia pri VMI 91. P. Pavlov*
- Ploidiv.
(CHOLISCYSTITIS surg.)

MISHEV,P.; SHOPOV.N.; KHUSTOV,r.
Changes in the protein picture in acute inflsmmtory conditions
of the gallbladder and,bile ducts. Khirurgiia, Sofia 13 no.Z-;3:
212-213 16o.
I' Iz Jr@tedrata po.f.akultbetsim khirUrglia pri VMI OI.P.Pavlowe
- Plovdiv.
(CHOIJOY@TITIS blood)
(BLDOD PROTIM ) I

-,zgHRISTOVp Re ---
Jubilee Scientific Session of the Department of Agricultural
Sciences. Spisanie BAN no.4:115-125 '59. (Im 9:11)
(Balgaria-Agriculture)

KHRISTOV, R., dots.
Origin and age of the Lyulin conglomerate. Godishnik Min ge-ol inst
8091-404 161-162 (publ. 163]

MSTOV ) R. Yl.
Yairistov R. N. Geologila-za VI klas na stroiteL-&te tekhni@auai. Sofiya (Narodna
prosveta@ 1952 175 P. Zd eology., a textbook for the 6th year of to chnical schoo.Ls . Thus. )
SOs Monthly List of East European Accessions, L. C. Vol. 3 No. 1. Jan 154 Uncl.

11 '-', -- Z7 C ', r--
...i @ - . , ".
=11-IC!""Ic 1"C17-11
Vol. 3, no. 1/2, 1955/56 (publishpd 1957).
y of the region ea.-st of the Luda Tana Rivfr. p. I
K.,.ri!!tov, R. Geolog-
Monthly Index cf Eant Eurcillean Accession.9 (IFAI) LC, Vol. S,;, ITO. 1.
Jan. 1959.

-@-,-TT-JTC71 7..
"L.
@-MNICLC-GY
Vol. 3, no. 1/12, 1955/56 (published 1957).
Klu-istovy R. Geologic and geomorphological expicring ef the ZheleznAna-Bistritsa
region together vith the east and north slores of the Vitcsha Vount-ains. 1. 211.
Monthly Index of East European Acce5sions (H-AI) LC, Vol. -2, 11"'o. 1.
Joal. 1959-

,cX=STOVp RadoBlav N.
Origin of the hinsnear the village of Gorublymneo PrIr I snaide
14 no,3:20-22 061. (KFAI 10s7)
(Bulgaria-Geology)

. MISTOV, Radoslav N.
Glacial traces in the valley of the Strums. River. Prir i
znanie 15 no.1:16-18 Ja 162.

..p4ISZOV, R., dots. k.t.n.
Geology of the region between the Yantra and the Trevnenakh rivers.
Godishnik Min geol inat 9tl89-206 162-163(publ. 16411

-c 17-o" 1,-,' C ,11
@tgv
end futm-e 'T"' 0')T,-O. Sof'iTl- -'rol- 10, -no. I,
SO: 1,@)nniy List of the 'East Ewropean Accession (E-'AL) D3. Vol. 4,, no. 10,
Oct. 1955". Uncl.

KHRISTOV, S.
Conclusions from the work of coal enterprises during 1954 and future tasks. P. 5.
MINWO DELO, Sofiya, Vol. 10, no. 1, Jan./Feb. 1955.
SO: "onthly List of East European Accessions, (EEAL), LC, Vol. 4, no. 10, Oct. 1955,
Uncl.

KITIISTOVI 3T.
Gorski transport. Softia, Zerdzdat, 1957. 684 P. f-Forest transportation;
a university textbook. illus.j bibl., diarrs., graphs, tables -7
Monthly Index of East European Accessions (EEAI) LC, Vol. 7, No. 10,
Oct- 56

KET TOV, St.
Application of the law of tranofiguration to quadripolem,
Godishnik Min pol inBt 7:289-302 160/161 (publ. 1621.

CHRISTOV, S. (Khristov, S.1; PANGAROV, N.; PAVLOV, D.
Overvoltage of hydrogen in cubic cobalt. Doklady BAN 15 no-5:53-1-
514 162.
k
I1 0

- --- -------
CHMTOV, S. [PEiitov, Sjj RAJCr,.VA,, T. [Raicheva,, T.)
Hydrogen overvol tage in hard and liquid gallium depending on
temperatureeb&klady BAN 15 no.5:515-518 162.
1* Lehratuhl. :fVw physikalische Chemis und Electrochemie am
Chemisch-Technologischen Institut, Sofia.

KRISTOV m, S.
Di"nsions of wire cables suspended at two endarfor transportation lines. p. 22
(TEZHKk PROMISHLENOST. Vol. 4m No- 3,9 1955)
SO: MONTHLY List of East European Aece831on,, (EKAL), LC, Vol. 4, No. 9,
Sept. 1955, Uncl.

' -KMMOV S.
KHRMOVP S. Wivalent circuits of alternating current, p,U,
Vol* 5# noe 2p Marw/Apre 1956p TIMEMO SOFIrAj BUI&MA.
SOt Monthly List of East Ibropean Accossions, (ML),, LC.9 Vol* 5p noo 10.9
Oct. 1956.

RMTOVP S.
"Method of reciprocal circuits for direct and alternating current.0
ELEKTROBNERGIIA, Sofiia, Bulgaria, Vol. 9, no. 10/11, Oct./Nov. 1958.
Monthly List of East 4urapean Accessions Index (EEAI)P The Ldbrary of
Congress.. Volvm 8. No. 8. August 1959,
Unclassified

KPIRISTOV, S.
Electric invariability of circuits for alternating and direct current and the
method of repeated circuits. p. 129.
GODISHNIK. Minno-geolozhki institut. Sofiia, Bulgaria. Vol. 5, no. 1, 1957/58
(published 1959).
Monthly List of East European Accessions (EZAI) IZ, Vol. 9, No. 2, Feb. 1960.
UNCL

Vol. 3@ no. 1121, 1955/56 (publisl!ed 1957).
Yhristov, S. Method of equivalent chains in alternating ctu-rent.
203.
Monthly Index of Eart Ewropean Accessimis (EEAI) LC, Vol. 9, No. 1.
Jrin. 1959.
PR

KHRISTOV, Stefan B., inzh.
Reconstruction of existing tunnels in connection with the
electrification of Bulgarian railroads. StroAelstvo 11 no.4t
17-21 Jl-Ag 1640

KHRI Simeon
@Ty,
"Technical and economic problems of price fixing for coals"
by R. Radev i V. Balev. Reviewed by Simeon Khristov. Trud
tseni 5 no. 9: 82-86 163.

1WRTSTOVJ ST.
Quartz Cr-ystal Control of Variable Range (Qua:'tz Stabilizers).
Radio (Radio), #8:19:Aug '
54

I A
.,',-w7.hor i3irerdzhivov Bo--i%n, "U::;O--r
.Jf---,)Ia-, ,r,,zLGto-,r %Iatyevr@ Ve--,
ot --@iven
;'itie -mcerninj tw-@ f
0
Docilic
Vine -,-0,-oiI--I,-'. be -td;- "Loi@
i n s t e a t i cl f I. v e -a o n
i -1 1 ig S 2 - t ilre I., tft
(:-@riter c,-C-e-4rc,@ :'ric !,!n -J@xi: lerr
T)Qvi-c-d of
-;Ulgqria/!Asease.s @@.L' 5arm .-.niraal-@-
lit-mt-jes and Rickettsi-e
,bs lour 1,.el* Imr-Bioi. tn a
C---ffaine
bstr!-ct @jrid -.-.us '-o'rolowr
wi central nervow,
in0J-?ci'iOn of eafI*eirie maintain
tion ia-iscit!i of the,orz@lnisr -POV P-@riud cf
15 days. Bence.',,i deer,[e-mail] dose of
'ine @tdalnlstero, biok@rxc-na ol"
I,it vau" d
f i,.Izw is caorible of t he
L-,-.lipity waich d-o,,,s not in -its ty
-evom -,@he one obtained a mmlt o'L the ::td'Ti-
n- of the usiial "ose
immunity is
vloiet vaccine is admini-,iterea intrac-..,tano.,),@,sly
.@.aan -..'Len it is admi.I.- subcutan---cu3-Ii-
nev? method of --ciration -,-;-ainst
s-ine oholerq. 'bAs bra;.--i out (si-,-tiltaneous
admi.-aistration of zed -zeru-: and
@.Iard 213
BULGARTA Cultivated Pjats. POtatoes, Vegetables, yplons. M-4

BUMAMA /Cultivated Plant~ 0 Potatoes, Vegetables, Mislono
Abs Jow i Ref Zhur - Biologiya, No 13, 1958, No. 56615
Author Mirlatcy) Storn
Inst fr6f a
Title Nov Popper Varieties
Orig rub Ovoshcharetvo i gradinW"OtV0, 1957, No 9, 32-36
Abstract No almtract given
Card 1/1
70
MIKHOV, Atanae; KRRISTOV, Stayan.[Kh; VINNITSKIY, S.[Vinnitolkyip S.11
red.; MO , T., tekhn. red.
[From the practices of Bulgarian vegetable growers] Z dosvidu
bolgarolkykh ovochivrqkiv. Odesa, OdesIke knizhkove vyd-vol
1960. 66 p. (MIRA 15:7)
(Bulgaria-Vegetable gardening)

BULGMIA/Human and Animal Physiology - (Normal and Pathological) T
Respiration.
Abs Jour : Ref Zhur Biol., wo 4, 1959, 17511
Author : Tsanev, B., 101ristov St. Kamzirski, P.
Ipst : Medical Institute, Bulgarian Academy of Sciences.
Title : Bronchospirometry (Method).
Orig Pub : Izv. Med. in-ti Bolg. AN, 1957, kn- 14, 407-432
Abstract Ho abstract.
Card 1/1

TSAITEV, B.; )MRISTOV. St.; WIAZIRSKI, P.
Bronchospirometry: methods. Izv. Mikxob. inst., Sofia no.B.-407-432
1957.
1. Sanatorium za grudobolni iskrets na agnadt Fl. lekar: D-r S. Simeonov.
(R3SPIUTION. fmnot. tests
bronchospirometry. technic & ding. value (Dal))

TSATTEV, B.; MMISTOV St,,,. KkNAZ'DtSKI, P,.
Advantages and disadvantages of bronchospirometry. Suvrem. nod., Sofia
8 no.8:64-70 1957.
11 Iz nnnatoriuma I ukrets na SGNS. Gl. Lekar: S. Simeonov.
(RESPDUTION, funct. tests
bronchospirometry, evaluation)

. MISTOV, St.; BEWVSKI, Al.; KOSTOV, T.
Pontonerntive'atelectasis in surgical treatment of tuberculosis.
Xhirurgila. Sofia 10 no.10:905-912 1957.
1. Sanatorium Olskrets* G1. lekar: S. Simeonov.
(PNMOIMGTOKY, comnl.
atelectasin in pulm. tuberc.)
(ATRUCTASIS, etiol. and pathogen.
pneumonectomy in pulm. tuberc.)

MMISTOV, S.
Invisible cavities in the pulmonary parenchyma & their diagnosis by
bronchography. Suvrem. mad.. Sofia 9 no.6:56-62 1958.
1. Iz sanatoriwm Lgkrets pri SGM (Glaven lekar: Ior. Popov),
(TUBIRGUL0615, FUIROURY. Pathol.
cavitation, bronchographic diag. of so-called invisible
cavities (Bul))

KLNAZIRSKI, P.; KHRISTOV, St.; SUNIV, Mr.
On Inflammatory lesions of the middle pulmonary lobe. Suvrem,med.,
Sofia no.11:42-50 159.
Us sanatorium 81skretsO pri SM. Gl.lekar: Iord. Popov.
(ATUNTA315)

S/081/61/000/024/042/086
B117/B147
AUTHORS. Khristov, St., Gudev, N.
TITLE: Corrosion of the reinforcement in reinforced concrete
PERIODICAL: Referativnyy zhurnal. Khimiya, no. 24, 1961, 311-312,
abstract 241250 (Tr. N.-i. stroit. in-tj v. 3, 1958 (196o),
237-252)
TEXT: Various factors were examined as to their effect upon the rate of
reinforcement corrosion in reinforced concrete, e.g., concrete compositiong
water-cement ratio, thickness of protective layer, concrete permeability
to air, concrete porosity, relative moisture, and quality of reinforcement
metal. Various types of ordinary and low-alloy steel and different
concrete compositions were examined. The results were evaluated by
different methods, e.g., by the visual method and by measuring the
electric resistance of the sample. During the tests, the samples were
kept both in air of varying humidity and in water of different compositions
The effect of TETe ash additives was also examined. It was established
that under normal conditions the reinforcement was well protected against
Card 1/2

Corrosion of the reinforcement .,.
s/oal/61/000/024/042/066
B117/B147
corrosion by concrete made from cement 300, in which the water-cement ratio
did not exceed 0.60 and the concrete layer above the reinforcement was
1.5 cm thick. The "shell" method was recommended for quick tests. In this
case, a cavity is provided insidc the samples and filled with the
required solution. [Abstracter's note: Complete translation.]
Card 2/2

NROLOV, R.,, dots., d-r; BALASHEVI Ang., inzh.; KHRISTOV, St lnzh.,-
PARGOVA, lv,,. inzb,
Experiumtal Otudies of the electric truck EBB 2002 B. Mashinostrosse
10 no.10:4-6 0 161.
N - R

l7iHRIJIT, Vl.; KHR13IT-11V, 17to
@@V-ftwAw.
Charges In thp ct-,ils of the rhl-llk embr-lo t' *z a @; a C7 u' 4.u:- es :6-1 f e,.-Ud
V'th variovs Ef-r.-@tno nf +,O@, vira:is Ii"ulsa2*.Y'z disease).
I
,zir.,Iet irst vix-as 'K@

BCNCHEV3,N,; XMMTOV',, St.
Mcperiments for the preparation of
the owine plague with the lapinized
virus lol53-156, 662!
the adsorbate vacedne against
Rovac virus* Isr Vat inst

k
AI
WNCIELT, INI-)
calf Glltprov I.-ruses
c1litIV-13-tio-11 Of p g
Isolation and
in the tlsoi)e wal t"re a jzv Vel. L-at viT-as 112:19-24'
4..; 4,.hp 4
. ,
Prepol-atlen rf a blval.ent -.161,11M awt-
k @ Sin).
mid the d1no-I

BULGARIA
KHRISTOVI kx@t__!IU@Veterin6ry Institute of Infectious and Parasitia@
Diseases, Sofia
"Au3sezky's Dinea0e,in Calves U@txot"On6rmonthl Oldi! 1,i
Sofia, Veterinarna Sbirka, Vol 63# No 3t 1966, pp 11-14
Abstract: Cases.of.Aujeszky.'s-disease in calves up to one, month old
were observed in Bulgaria in 1964. The disease could be transmitted to
rabbits. strains that were isolated from calves with symp-@-.-ra
toma of encephalitis and grown in tissue cultures reaated!.with
-4AuJ0sxky disease hyperimmuno serum from the Antiplague Institute in
Vratea and with calf antiaerum, to the strains. Calves could be infected
with a strain grown in a tissue culture6 Injections of antissrum. In,
to calves had a prophylactic effect. It was established that adult
112

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.ic fur

FT S.
.. IISTOV$
KqRISTOV, S. Var-lous methods by which the Laid of the Conseriation 6f
Eaergy is supported. p. 231 Vol. 5 Jan./Dec. 1955
IZVESTILA SERIA FIZICMEESKA. Softia, Bulgaria
SOURCE: East European Accrissions List (EM) Vol. 6 No. 4 April 1957

.lmf ILI
AW N. A- P-dripAroy (Z Hi4rro-
ChvM, cr-Ta_73C_50-@Md-3 Turr. a ,,-ath
con(g. 350 g.P. CrOs, 3-5 gjI. H2.SO, at 0 3 5 zruij@ iern @ an-j i!
itud t=ng=l Cr from HM N-14j&0,_ ew &@I. Cvc)@,, 33-4 gJi.
won at (@ 46 Ampjcmt I-ad 19-51 C. Candit
dom &,r t%
dtkiblifti-Of Oven,01tap *vtr
only ft niech3nhfn but aiso of th.: i.:%,_1
fol the two crystal rams- -file ditrer,:IMA!I @fc
differrat adwrption chancierwics af the @ub.,_- if@l hc@-gc@@I
crystals. 34 tcL-P- A- 8,
r

AUTHOA: Khristov, St SOV/20-125-1-38/67
TITLE: Quantum Mechanical Effects and Temperature Dependence of the
Rate of Electrolytic Separation of Hydrogen and Deuterium
(Kvantomekhanicheskiye effekty i temperaturnaya zavisimost'
skorosti elektroliticheskogo vydeleniya vodoroda i deyteriya)
PERIODICAL: Doklady Akademii nauk SSSR, 1959t Vol 125, Nr 1, PP 143-146
(USSR)
ABSTRACT: Various considerations of other authors, which are shortly dis-
cussed, permit an indirect quantitative evaluation of the in-
flugnee exer@ised by the tunneling effect upon the discharge of
H 0, and D 0 , i.e. by investigating the temperature dependence
o? the cu4ent density by means of the Eckart barrier. The direct
way would require knowledge of the accurate shape and size of
the barrier. However, only a few exact data are available hereon;
8
the barrier is not wider than the double layer (d ce 1.5-10- cm)
and not higher than the experimental value El of the activation
energy. For practical reasons it is useful to employ the sym-
metrical Eckart barrier which can be represented by the poten-
Card 1/4 tial function VW - 00 e2,xx/l/(l + e21cx/l)2, where E0 denotes

SOV/20-125-1-706/67
Quantum Mechanical Effects and Temperature Dependence of the Rate of Electro-
lytic Separation of Hydrogen and Deuterium
the height and S . 21 the width of the basic line of the barrier,
Also for the penetrability of this barrier an expression is
written down. In order to determine whether an approximation of
the actual barrier by the Eckart barrier may be justified, the
author primarily computed the activation energy E I for numer-
O'H
ous values of 8 and B0. The valueo obtained were considerably
smaller than the corresponding experimental values, both for a
mercury cathode and other metals. According to these results the
Eckart potential cannot be employed as an approximate formula +
for the shape of the barrier in the case of a discharge of H 30
on a mercury cathode. It is, however, suited to the determina-
tion of the indirect part played by the tunneling effect in this
process. A table contains for three values of E0 those values of
8 at which E0 has one and the same value, i.e. 1.48-10 -12 erg
(21-3 kcal/Mol). For the purpose of investigating the problem
more precisely the author chose a barrier 1,6.1012 erg
Card 2/4 (23 kcal/mol) long, which is hardly affected by the tunneling

807/20-125-1-313/67
Quantum Mechanical Effects and Temperature Dependence of the Rate of Electro-
lytic Separation of Hydrogen and Deuterium
effect. A diagram shows the dependence of the activation energy
on the width of this barrier. Consequently, the experimental
value of E ' obtained at 4-4 to 4.8 1. The corresponding
o,H is
results of the computatione of three different values of 6 are
listed in a table. According to these and a few other data, an
Eckart barrier 1.6 *10- 12 @rg long and 4.6 to 4-8 AG wide for a
discharge of H 30 and D 30 at 0 is absolutely equivalent to
a real barrier though this width is about three times larger
than the thickness of the double layer. According to the data
under review, tile part played by the quantum mechanical effects
of the penetration through the barrier and those of the reflec-
tion above the barrier is of great importance: virtually all
particles exhibit a non-classical behavior. In the case of a
real barrier the influence of the tunneling effect is probably
not weaker but perhaps even stronger than in the case of the
equivalent bavier. Turther, the difference between the zero
Card 3/4 energies of H and D exerts but a weak influence also in this

SOV/20-125-1-38/67
Quantum Mechanical Effects and Temperature Dependence of the Rate of Electro-
lytic Separation of Hydrogen and Deuterium
case. There are 1 figure, 4 tables, and 7 references, 3 of which
are Soviet.
ASSOCIATION: Kafedra fizicheskoy-khimii i elektrokhimii Xhimiko-
tekhnologicheskogo institute Sofiya, Bolgariya (Chair of
Physical Chemistry and Electrochemistry of the Institute of
Chemical Technology,Sofia, Bulgaria)
PRESENTED: December 4, 1958, by P. A. Rebinder, Academician
SUBMITTED: September 10, 1958
Card 4/4

434
Ii the Itiseiki
T6 io
66d
ussfan and QCrm20
Brij 11".,

L
-to aww that the exptl. det&

dependenco'61 the on the overvoltage (at
discharge cd.
T (4K.) i-ccousi-.) can be Red by a qwntulu-mech.
consideration (after Ourney. 0. 4200) of the c1cMdutarY
proem of transport CA - long (Coin the toln. to the electrode
and vice vem [e-mail] gemctric form of the
potential barrier plA s an essential role. There is also iC
ur
nt at
th
d
I
h
di
h
re
ssc
. on
e c
t
arge
e
temp, dependence
coost, overvoltare., Closely connected with this problem Is
the detn. of the acing height of the potentitil barrier,'which
for the existence of the tunnd effect must be greater than the
exptl. measured activation energy. The present computs-
tig
tunnel, and th of the ct*nlcal currttit Show, t At, at least

t. the tunnel effect nius In. asignificantrole
rot , t
inthe.w thand eight the t t I cr, which are
not such useful met (owr mat haaa sin as the aetual
dimitudlons wo t However, the accurate detn.
of the barrier parameters Is of dwisive, insportance for the
P&tjon of the
soln.' of the degree of putici
L
am
e A quant. Juxtap
process
l
Aunad effectr
tiOnof thirestilt1ofthepresentcalcii. with thecale
ns. made
In the classial huinner, rePrdi%- the abs. velocity of the
.~eimtrolytk~wpa:ofHb&TwwtatPreselit. Thesameis
ft- Of the quiet. UcOrdanft with the measurements by Post
and Hiskey (CA 43,'501&), as wen as the detu. of the sepa.
factor of the H Isotopes. . However, the present theoretical.
consilderations and expts. undoubtedly Indicate that the
tunnel of the lightest long Participates measurably
th
f
l
i
=
h
n
o
e
e e
t
ectrode processes. Therefo
re. the
idnetic equations for these procesxs must be formulated
not In the Aessiciii way as by Rrdey@Gnm and Volmer (CA
26, 1197), but approx. u described In the present work
based on quantum mechanics. 37 references.
A. Moskovi-,

PANGAROV, N. A.; KMSTOrV Stefan G,
Dependence of the excess pressure of hydrogen on the crystal
structure in chromium. X. Excess pressure of hydrogen on cubic
chromium in weak acid and weak alkaline solutions. II. Excess pres-
sure of bydragen on hexagonal chromium; a comparison with the
results from the cubic chromium. Izv Inst khim BAN 7.1237-270 160.
(MAI :LO: 9)
(Hydrogen) (chromium) (Acids)

@C) V

F

tw
J k

estt-.
APpIl" tion of the wave to

on of
gati
pomuty 0 an un-.
f.r Z sym. parabolic potential mve. Wch Is obtained by super-
tion of a linear tw on G. Syla. Parabolic Wavc. was
M
t 4 sumArnitioa methods, relatively
le formt se formulas are said to
sim
p
be very suitable for tM Investigation -of the role played by
the tunnd effect, In the Itinctics of clectroch%ni procesfts.
TC. van lpenbtnV

twi

27,

KHRISTOVJ St, G.
Symmetry factor theory in the kinetics of electrode
processes. Izv Inst fiz khIm 3 43-70 163.
lo Institut po fizikokhimFia pri Bulgarskata akademija
na. naukite,

KHRISTOV, St. G.
Generalized approximate exprossions for the penetrance of potential
barriers. Izv fiz atom BAN U no .1/2-.221-237 163.
7 i@
'M NP
R,

KMISTOV-) -4@6 A.,VJ@-
Electric circuit in its alteration. Godishnik Min geol inat
7 no.1:3-13-232 160/161.
@4 41
-kly

KRIST071, T.
"Palchik", -P- 1, (GEOGFUIIA, Vol- 4, No. 6, SofiYa, L@dearia)
M: @bnthly Ust. of E5si European Accessions, (MIL), Lr,, Vol, 41 No, 11
J an. 1955, bhol.

KHRISTIDV, T. L. DINEV and I. FFNKOV.
Naph arsdove (Our-Citles); a book review. p. 24.
(Geograflia, Vol. 7, no.1, 1957, Bulgaria)
SO: Monthly List of East European Accessions (EEAL@ LC, Vol. 6, no. 6, June 1957, Uncl.
HI T,

KHRISTOV, T.
The breakwater strip of the dam and possibilities of strengthening it.
P. 258 (GORSKO STOPANSTVO) Vol. 13, no. 6. June 1957,
SOMA, Bulgaria
SOs- Monthly Index of East European Accessions (EEAI) W, Vol. 7, No. 3,
March 1958

KHRISTOV , T,,
StructUrc, fixid Ji-3tribit3.ozl of ialujetri6o in Sotin,
Godl,,diidk bin.' 55) 160,/,'&). (publ,, u621.

KHRISTOV, T.
Dovelnpment and geopraphic dist.-Il-ution of 1--.
I . t
i.r. ailt-tria. Godishnik h1of IR , i.2:99-156 262-163 (pub"'.
0-

MISTOV,, T8.1 PETROVAj L.
Utilisation of vood scraps by lVdrolyzation- photosynthesis& p. 9.
(TEZHKA PROMISHLENOST, Vol. 4,, No. 3,, 19551
SO* Monthly List of East European Accession, (EEAL), LC, Vol. 4, No. 9,
Sept. 19559 Uncl,

KHRISTOV, TSV
Utilization of Wooden Waste Material through the Hydrolysis (Saccharification.).
In the Bulgarian Heavy Industry, 3s8:Mar 55

Lcl,,acco and cotton stemu as mu raber-lal for "lic; cell-,i-'Cse hrd pz-@@er
industry. 11. 31
"'ol. 5, No. 4, -1') 5 6-
@@Oflya, P'Alearla
So. East D-ircoean Accessions List 701. 5, ,.0. -@,eDtembvr,

BULGARIA/Chenical Technology - Cellulose and Its Derivativese H-33
Paper@
Abs Jour : Ref Zhur - Xhiniya, No 24, 1958, 83797
Author : Khristov Ts.
Inst
Title : Stem and Leaf Pulp of Certain Grass Families as a Raw
Material for the Production of Cellulose Paper.
Orig Pub : Tekhni)ra (belg#),v 1958) 7) No 11 13-16.
Abstract : The absence of any essential difference in the anatomical
structure and chemical composition (excluding lignin) of
straw of Phalaris bulbosa, Panic-um virgatum and Elymis
arenarius as compared with the mheat straw and other Gra-
mineae is pointed out, The lignin content is alwat two-
fold as that in straw sheate The whole bulk (stems and
leaves) from Pe bulbosai, Po virgatum and E. arenarius can
be ecomplately processed by the sulfate method into a cel-
lulose suitable for the manufacture of paper.
Card 1/2
69
BULGARIA/Chemical Technology - Cellulose and Its Derivatives. H-33
Papari
Abs JOur Ref Zhur - Mlimiya, No 24, 1958, 83797
The hi6,h content of lignin in the straw of these grass
families causes no difficulties in their pm cessing
together with wheat straw into cellulose. The grass
scads are utilized for forage.
Card 2/2

MA IOPI
'g;
$"R-Q
Tuentieth CongreaB of Czechoslovak Chemists, Khim i induBtrila
35 no.4154-155 163.

I- KHRISTOV, Tov.; DRAGANOVA, R.j STEFANOVAp Ant.
Ixtraction of lignine from the wood part of ailantue with dioxinee
Godlabnik Min takh 6 no.1:75-95 '59 (Publ. '60)
11

KHAISTOV) TOV.; LITOVSKIq Zdr.
------ -1- --
Obtaimiient of the wheat-straw bleached semicallulose by the
neutral mdfite method. Dim i industriia 23 no.5.-137-W 161.

191RISTOV. Tsviatko; VULCHEV, Vladimir
Semicellulose obtained from beech wood by monosulfite method
in a steam pl@ase. Khim i induntriia 36 no.4:127-131 164.

IORDANOVA, Ar.; 'KHRISTOV,. Tqv@,'-'
Delignification of Bulgarian widespread greenwood varietes idith
hydrotropic salts. Khim i industriia 36 no.7:250-254 164.
1. Scientific Research Institute for Chemical Industries, Sofia.

MMIST P,,A---n&
The Min Felin region from the viewpoint of eoonomic geography,
Pt, 2. Godishnik biol 53 noo3-.157-211 958/359 [publ. 1601.

@7cv I i
LOGY
VC-1. @-, nr. 5,
ldiristovy V. ; 111-0-matal-CV, 11. Petrov, I. Dovicc for mitom-luic sto -,inrl- of
cone-veav@ng mnchine in ca@e cf accilent. p.31.
Monthly Index of East Eurcr,eon Accosgions (F-EAI) LC, Vol . J, tic. 1.
Jan. 1959.

j3ULGARTA/plant Physiology - Mineral Ilix'U'iition.
Abs Jour : Ref Zhur - Biol., No 231 1,05,", lo4376
Author : Popov, I.Do., and Khristuov, V.
Inst : Bulgarian AS
Title : The Penetration of Co6O Into Iffieat Seeds upon Soakip[;
Thma in a Solution,
Orig Pub : Dokl. Bo1g. AN, lo, mo 1, 73-76, 1937.
Abstract : 1rheat seeds vere soakca for 77 hhours in a 0.02@p solutiml
of COC12 containing 20 curia-, o-C Co6O, mid thereupon gcr-
minated on filter paper soaked in distilled water. Co6O
pencturated the seeds chioily through the seed bud and,
Uo a much snmller extl-eir'k-., Uiroudi the o osite cal of the
sced. Upon the germination oi&.' seeds JOS migrated to -the
root of the germ p1wit, and the radioactivity of tho
stalk increased sli6htly. ...- L.V. Romanov
Card 1/1

KHRISTOV, V- _
SCIENCE
Periodical: IZVESTIIA. BULLTr3N Vol. 8, 1957
KHRISTOV, V. Investigating thgomovement of Co 60 in wheat grain by stepping it in
a solution of Co . p. 105.
Monthly List of &.at European Accessions (EEAI). IC. Vol. 8. no. 2
February 1959, Unclass.

UZUNOV, G.; IORDANOV, B.; KHRISTOY V.
Effect of exp9jimental eptleptiform seizures on hemato-cerebrospinal
passage of CocAJ. Suvrom. md.. Soft& 8 no-l-.102-104 1957-
1. Is katedrats po Ialkhtatrita pri VNI Sofita (Zav.
katedrata: prof. G. sunow) I Katedrata po atomna fizika pri
F" - - Softia (Eaw. katedrats: prof. Khr. Khristav).
(COBALT, radioactive,
In blood & CSF. off. of exper. opileptiform seizures
(Bul))
(11PILIPSY. expertmental.
off. on radiocobalt in blood & CSY (Bul))

-F.rr'-'c' 14"AMROW@ SWICE CODS: BU725037667614T-06
A0 0 7/0 37
AUTHOR:. Khristov, V.
ORO: n Ze
TITLE: A study of the reacting sensitivity of a nuclear reactor and possibilities for
measurement of the effective absorption cross sections in reactors with a hard neutron
spectr@m
SOURCE: Bulgarska akademiya na naukite. Fizichesjj,_JjjtMj.V&j:. Izveatiya na
FizicheskYy-a-UFs-t-i-tu-t-s--ANEB, v. 14, 1966, 27-37
TOPIC TAGS: nuclear-reactor technology, nuaear reactor, radiation eensitIvity,
absorption spectrum shift
ABSTRACT: In this paper the reacting sensitivity of an IRT nuclear reactor is deter-
-1, mined And its dependence on the absorber position and the active zone configuration
are established. The possibility of measuring effective cross sections of absorption
by the static method of reactivity and by the spherical oscillatory method under fast
neutron conditions (characteristic of the IRT reactor) has also been studied. Reacti-.@_-.
vity was measured by placing a round condmium absorber plate 19.6 mm in diameter, and.
3 ji-to.1 = @thick in the center of.the reactor core while it was operating under
exact critical conditions at small power (from 100W to 1 W). The reactor was then
,,:J Card 1/2-