SCIENTIFIC ABSTRACT PROCHAZKA, M. - PROCHAZKA, V.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001343110014-3
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 15, 2000
• Sequence Number: 14
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

CZ/8-52 (92 )-10-17/3-9
Sulpho-laneo II. Hydroxy Derivatives of Sulpholanes
rates of reaction oJL-' the epoxidR IV and the bromohydrine
VIII with liquid ammonia at -33u0 is given. The h7droxy-
sulpholane VI was also prepared in high yields by the
reaction of the chlorohydrine V with liquid.ammonia.
Details of the preparation of the various compounds,
their percentage composition, melting points and yields
are quoted. There is 1 Figure and there are 10 '-referen-
ces: 3 German, 2 Belgian, 3 Czech, and 2 BriLlish.
ASSOCIATIONtKatedra organicke/ chemiet tf&tematicko-fysika'lnf fakulta,
Karlova universita, Praha (Chair of Organic Chemistry,
Depaj~tment for Mathematics and Physics, Charles University,
Pragu e
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PROCHAUAV Milos
~'~~ana d five-membered rings. Gheu listY 57
Tr~=~~ei no.6:629-
635 Je 163.
L Ratedra. organicke chemie., Prirodovedecka fakulta~, Karlova,
universita.. Praha.

CZEC.'-IOSLOVAKIA
HE,ML, J.; P=CHAZXL*-dS.L Gynecological Department and OXS CAbbreviation
not explaineq/ Okreeni Institute of National Health (Gynekologicko-porad-
nicke Oddeleni a OXS OUNZ), Rakovnik, Director (Reditel) Dr J. PECRA.
"Epinephrine in the TrehIment, of Lumbalgias and Sacralgias.11
Prague, Casopis Lekaru Ceskych, Vol 105, No 31, 9 Aug 66, p 845
Abstract: Treatment of 73 women and 78 men showed that epinephrine is a
suitable drug for the treatment of muscular fibrositis, mainly lumbalgia
and sacralgia; subcutaneous pain, affliction of body parts outside of
joints, and perineural afflictions are affected only to a very limited
extent. No references.

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9 no.11:416-4ig N 16:L.

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PROCHAZKA, M.
TECiMOLOGY
Periodical: ZELEZNICAR. No. 12, Dec. 1958.
PROCHAZKA, M. Safety on railroads. p. 270.
Monthly List of East European Accession (EEAI) LC, Vol. 8, no. 3
March 1959 Unclass.

PROCHAZU j M.
"Derailment of passenger and freight trains." p. UO.
ZELEZNICA.R. (Yiinisterstvo dopravy). Praha, Czechoslovakia, No. 6, June
1959.
Yonthly list of East European Accessions (EMU ), LC, Vol. 81 No. b,
August 1959.
Uncla.

PROCRAZKA, MiIoslwr
Problems of safety of railroad transportation. Doprava no.11.,
370-371 162.
1. Ministerstvo dopravy a spoju.

.T, 1~1
PROCRAZKA, Miloslav
Causes of accidents. Zel dop tech 10 no-11:323-324 162.
. i..
I i,-,

ZINNERMANNOVA, H.; PROCHAZKA, M.
Isomerization of (4-uble b~onds em-d addition of a--Icchcl --c ansat.---ated
slal-fones. Coll Cz Chem 30 no.1:286-296 Ja 165.
1. Institut fur organische Chemie, Karlsuniversitat, Pragiia.
Submitted August 24, 1962~

PROCHAZKA,_"slav.. inz.
Earthwork in winter constructions. Tmz stavby 11 noollt
401-406 Nf63-
1. Vojenske stavby, n.p., Praha.

Z/0039/,64/023/006/033.3/033.9
ACCESSION WR: AP039418
.AUTHOR: Prochazka, Kiroslav (Engineer, Candidate of sciences)
TITLE: Electromagnetic light waves in communications engineering
SOURM Slaboproudy obzor, v. 23, no. 6, 1964, 313-319
'TOPIC TAGS: electromagnetic light wave, message transmission. long
distance message transmission, laser, gas laser, solid state laser
ARSTRAM: The article discusses the basic problems associated with the use-of
Jizhtwaves for the long-distance transmission of information. The questions of
igenerating, modulatingsand detecting light signals are pointed out. The authors
.points out that continuous-duty generators are best suited for this type of commu-
,nications. Gas and solid state lasers belong to this category. Inasmuch as alter-!:-
nating currents with a frequency of light cannot be generated, the radio signal
;carrier frequency can be effected by a modulation current signal. The chief
problem In the modulation of electromagnetic light waves, which would permit the
.use of high frequency carrier wave-9, is the wide bandwidth of the modulation. The
'Card

ACCESSION NR: AP4039418
frequency of an electromagnetic wave in the red part of the spectrum is given as
approximately 4 x 10-14 cycles, i.e. 400 tegacycles, which means that a 1% modula-
tion band represents a bandwidth of 4 x 10 ma, which is dufficient for the simul-
taneous transmission of one billion telephonic messages. Modulation methods based
on subcarrier frequency have amuch better chance of success. YarW experiments
with modulation of light waves by subcarrier frequencies have already been carried I
out, and a modulation of 10 gigacy-cles has been attained. A light ray was modu-
lated by a 2.8-gigacycle subcArrier with a modulation band of 5 mc and with a
modulation 'Lndex of 200 watts. The effect of atmospheric and meteorological condi-li
tions upon light-wave transmission is discussed. The application of light guides
Or optical pipelines for light wave transmission of information is mentioned.
Examples of.a bunched and hollow light guide are given. A critical estimate of
Iemploying light waves for message transmission in the foreseeable future is pre-
sented. Orig. art. has: 8 figures, 1 table, and 6 equations.
ASSOCIATION: Vyzkumrq ustav pro sdelovaci, techni1m A. S. Popoval Prague (Research!
Institute for Communications ErAgineering)
SUMaTTED: 3OJan64 A:TD' pRESsi 3073 ENCL 3 00
SUB CODE: OP, EC NO REF SOV: 000 OMER.: 006 i.
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PHASE I BOOK EXPLOITATION 803
CahaY Vladimfr, Engineer, and ProchAzka, 141roslav, Engineer
Anteny (Antennas) Prague, SNTL, 1956. 462 P. 3,500 copies printed.
Reviewers: Stra'nskj, Josef.. Dr.,.Engineer, Corresponding Member of the Czechoslovak
...Academy of Sciences, and Befia, Josef, Dr.,Engineer; Ed.: Major, Rudolf;
Tech. Ed.: Appl, JiH;
PURPOSE: This book is a textbook for institutions of higher learning. It may be
used also by technicians in research establishments and in factories of the
electrical equipment industry.
COVERAGE: The monograph deals with the theoretical principles of transmitting and
receiving ante=as and of antenna systems, and discusses several antenna types
and constructiorm fro the point of view of practical design, calculation and
measurement. The book is based on information acquired in the course of several
years experience In the theory and practice of ante=a design. For technical
reasons it proved necessary to omit any treatment of the following subjects:
cara:;:I~-

Antennas 803
the fundamental relations of the electromagnetic field and the propagation of
an electromagnetic field along a conductor; descriptions of certain types of
antennas rarely encountered in practice (for example, polygonal antennes);
grounding systems for a symmetrical antennas. In the chapter on impedance
relations. in azitenna conductors, the authors limited themselves to a simple
enumeration of current methods of calculation. In composing the book, the
authors have'tried to include the richest material accessible in the domestic
(Czech) and foreign literature on.the subject since in Czechoslovakia there has
not been enough experience in microwave work. As far as standard symbols are
concerned., the designation of time and space vector magnitudes caused typo-
graphical difficulties. The time vectors and complex numbers, therefore, are
indicated in normal italics. The space vectors are given in half-thick italics.
The technical terminology follows the provisional plan for terminology standards
worked out by the Ministry of Machine Building. In several cases, where it was
found that a given term was already in wide use, this is not so. The author
thanks the electrical engineering editorial staff of SNrL for their help in
preparing the book for publication. No personalities are mentioned. There
are 159 references of which 13 are Czechi, 10 Soviet, 19 German, 1 Swedish,
6 French, and 109 English, including 1 translation. In addition, another
Soviet source is cited in the preface.
Cart=2~~

PROCHAZKA, M.
PROCHAZKA,, M. Miniature direction kv. antennas. p, 5
Vol 4. no. 1. Jan. 1956
SDEWVACI TECHNIKA
TECHNOLOGY
Praha, Czechoslovakia
So: East European Accession voi. 6. no. 2, 1957

PRXHAZKA, _.M.
"What a builder of radio receivers should know about antennas."
P. 93 (Sdelovaci Technika, Vol. 6, No. 3, Marc)) 1958, Prabal Czechoslovakia)
Monthly index of East European Accessions (EFAI) IL, Vol. 7, No. 9,, September 1958.

PROCHAZKA,, M.
"Facts about cubical antemas.11 P. 127.
SEDLOVACI TECHRIKA., (Ministerstvo strojirenstvi). Praha, Czechoslovakia,
Vol. 7j No. 4, Apr. 1959.
Monthly list of East European Accessions (EEA1),, LC, Vol. 8, No. 8.,
August 1959.
Uncla.

41798
.3/194/62/000/008/086/100
D413/D308
AUTHOR: ProchAzka, Miroslav
TITLE; An indirectly illumina ed aerial system
PERIODICAL: Referativnyy zhurnal. Avtomatika i radioelektronika
no 8, 1962, abstract 8-7-120 a (Czech. pat., c1. 21a4
46~02, no. 98119, Jan. 15, 1961)
TEXT: A simple solution is proposed to the problems of separating
the differently polarized waves of the transmitted and received
signals in the aerials of radiorelay stations. The known solutions
are described. A description is given of the system to be patented,
which does away with their disadvantages. -This system contains no
waveguide bendst and its features are adequate broadbandedness
only slight screening of the reflector surface, and the convenient
use of a feed from behind the reflector. The primary reflecting
surface 4 of the system (see Figure) is formed of an auxiliary para-
bolic re'flector, which is connected to the main reflector 1 along
their common axis by the dielectric waveguide 1, itself provided
with the excitation device 2. LAbstracter's note: Complete transla-
Card 1/2

An indirectly illuminated aerial system
tion.j
Fig.
I
j
i
3
3
S/194/62/000/008/086/100
D413/D308
- k
11
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28898
Z/039/61/022/011/005/006
700 J)291/D304
AUTHOR: Prochfizka, Miroslav, Engineer, Candidate of Sciences
TITLE: Miniaturization of antennas
PERIODICAL: Slaboproudk obzor, v. 22, no. lit 1961, 675-682
V
TEXT: The V'zkumnj fist4v sdelovact techniky A.S. Popova v Praze
y
(Communication-Engineering Research Institute A.S. Popov in Prague)
studies methods for reducing the dimensions of antennas for the V11F and
SHF band. This article surveys possibilities of miniaturizing antennas
and antenna arrays and critically evaluates application possibilities.
There are three methods for reducing antenna dimensions: (1) To sdect
and apply a suitable inductivity and/or capacity that changes the current
and voltage distribution along a linear antenna in a way which necessi-
tates a shorter conductor for the required electrical effect; (2) To
surround. dipole or loop antennas with a magnetodielectric medium; and
(3)'To find such array arrangements or feeding systems which have a
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28898
Z/039/61/022/011/005/006
Miniaturization 0291/D304
maximum directivity factor in a given space. For evaluating miniatur-
ized antennas, the following parameters are tested: (a) broad-band capa-
city; W impedance properties; (c) directivity factor; and (d) anten-
na efficiency. The'results obtained in antenna-miniaturization tesUs
can be summarized as follows: (1) Capacitive shortening is most advan-
tageous, especially for large reduction of antenna dimensions (10 -
WYO, since the real component of the input impedance is increased which,
in turn, results in jhcreased antenna efficiency and improved broad-band
properties. In cases where the dimensions of the capacitive load are a
hindrances a combination of capacitive and inductive (L-C) shortening
should be used. The inductivity should be applied at the current maxi-
mum rather than at the ends of antenna conductors. The highest antenna
efficiency (i.e. gain factor nearly equal to the directivity factor) is
achieved with capacitive shortening or an LAC combination with prevail-
ing capacitive shortening. In the practical design of such a shortened
antenna, impedance matching must be solved by suitable transfornation
=6 conpeasation. An antennas reduced to 35%, has a very good gain and
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2'_ 3
Z 39/61/022/011/005/006
Miniaturization ... D291/D304
can be used for'~JV reception.. (2) Since.electromagnetic waves are
shorter in a magnetodielectric medium than in free space, also resonancc!
and anti-resonance occurs at shorter distances when electrical dipoles
are placed in a magnetudieLectric material (sphere). The Q factor of the
shortened.antenna,is considerably increased and the real components
of the input impedance are considerably lowered. Both the efficiency
and gain factor depend on the-magnitude of dielectric losses and can be
calculated with thV aid of electronic computers. However, it must be
considered that them otherwise regular dipolar radiation pattern is se-
verely dissipated ih certain critical cases. Antenna miniaturization
with the aid of dielectrics is only seldom used, with the exception of
few applications in the field of centimetric waves (dielectric rod antcn-
nas). (3) Several efforts were made to redu ce the size of antenna
arrays by appropriate spacial arrangement. It was found that the
miniaturization is always accompanied by a large increase of the Q
factor (very small bandwidth) which results in so-called supergain an-
tennas which are, so far, very difficult to realize. In conclusion the
author states that antenna~ainiaturiziition is always a great problem
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28898
Z/03 9/61/022/011/005/006
Miniaturization D291/D304
since it is always accompanied by a certain reduction of the bandwidth.
Some progress can be achieved when linear antennas or dipoles are
shortened by applying a capacitance (or L-C combination) or the prin-
ciple of reducing the speed of wave-propagation in a magnetodiclectric
medium. Another, indirect method to reduce antenna dimensions is the
utilization of semi-conductors (e.g. tunnel diodes) installed directly
into receiver antennas. There are 10 figures, 2 tables, and 6 referen-
ces: 4 Soviet-bloc and 2 non-Soviet-bloc. The referenccsto the 2
English-language publications read as follows: Ch. Polk: Resonance and
Supergain Effects in Small Ferromagnetically or Dielectrically Loaded
Biconnical Antennas. IRE Transaction on Antennas and Propagation, v.
AP-7, 12% 1959 Special Suppli R.F. Harington: Effect of Antenna Size on
Gain, Bandwidth and Efficiency, Journal of Research (Nat. Bur. Stand) v.
64D, no. 1.
ASSOCIATION: Vpzkumn~ fistav pro sdyovact techniku A.S. Popova, Praha
(Communication-Engineering Research Institute A.S. llopoy_
in Pragu )
SUBMITTED: June 20, 1961
Card 4/4

FROCHAZKA, Niroalavq inzap C.Sc*
Conditionn of television reception vith an indoor antenna, Wel tech
10 no.8:288-289 Ag 162.

CZECHOSLOVAKIA
PROCHAZKAO MI GERWi* J*Vj SMISEKg M
IsInstitute of OrgAnic Chemistryg Karlova University,
Prague - (for ?)z 2* Institute of Physical Chemistrye
Czeclwslovak Academy of Sciences, Pragme - (for ?)
Prague,, Collgetion Qf Ciechoalpyak Qaieal -Comiuni-
.Me No 3. March lgbbv PP 1315-1322
.qLtLo
8Oxdbioyclo(3#3vO)octanese"

BEHIIN('I'r,, Jo-4of, BALOUN, JR-10011"l; PROCHAMA, RtroslRv
Some experienc,~~s of the Hutne ~tavby National Enterprise, Kosice.
Pozemnl^stavby 13 no.4:1~2-134 '165.
1. Hutne stavbj National Enterprise, Kosice (for Behuncik and
Baloun). 2. Mlinistry of the DO Ming Industry, Prnpue (for
Prochqzka).

Microbiolor,j
CZEMOSLOVAnA CZ/0064/66/011/005/0337/0346
A UT HOR :Prochazka, 0.
ORG: Institute of Hygiene, Epidemiology and Microbiology,
Prague
TITLE. Preparation of conjugates of 19S and 7S globulins of anti-
tularem-A'.c sera for use in determining t1he specific fluorescence of
Pasteurella tularensis
SOURCE: Folia microbiologica, v. 11, no. 5, 1966, 337-346
TOPIC TAGS: tularemia, bacterial dlbeasc, bacterial antigen, rabbit
serology, fluoresconce
ABSTRACT: Conjugates of 19S and 7S globulins from antilcularemic sera
W-th fluorescein isothiocyanate were used to detect Pacteurella tuZar-
cnS113. Serum was obtained from rabbits 7-10 days after immunization.
Expari.mental results showed that the 19S globulin fraction had a weak
.-r.,.Uaofluoresceace reaction with pure cultures of Paataurcl4a tular-
ansio, althou,-Ih it contained the most agglutinating antibodies. The 7S
'fraction (with a low agglutinin content) produced more intense fluores-
A. A.
cance. it was concluded that agglutinating antibodies may not be the
carriers of fluorescence. The immunofluorescence reaction did not show
1/2

striking differences between various virulent strains of PaateureZZa
~u4aransia. orig. art. has: 2 figures, and 4 tables. [W.A. 501
41 L 6
2/2

ACC NRz AP6032917 SOURCE CODE1 CZ/0064/66/011/005/0337/0346
AUTHOR: Prochazka, 0,
ORG: Military Institute of Hygiene* Epidemiology and Microbiology,
1 Prague
TITLE: Preparation of conjugates of 19S and 7S globulins of anti-
tularemic sera for use in determining the specific fluorescence of
PasteureZZa tularensis
SOURCE: Folia microbiologica, v. 11, no. 5. 1966, 337-346
TOPIC TAGS: tularemia, bacterial disease, bacterial antigen, rabbit,,
ABSTRACT; Conjugates of 19S and 7S globulins from antitularemic sera
with fluorescein isothiocyanate were used to detect Pasteurella tular-
ensis. Serum was obtained from rabbits 7-10 days after immunization.
Experimental results showed that the 19S globulin fraction had a weak
immunofluorescence reaction with pure cultures of Pasteurella tular-
ensis, although it contained the most agglutinating antibodies. The 7S
fraction (with a low agglutinin content) produced more intense fluores-
cence. It was concluded that agglutinating antibodies may not be the
carriers of fluorescence. The immunofluorescence reaction did not show
~Card 1/2

ACC NR: AP 6-32~Y7
striking differences between various virulent strains of PasteurelLa
tuLarensis. Orig. art. has: 2 figures and 4 tables. [W.A. 501
SUB CODE: 06/ SUBM DATEt 12Jan66/ ORIG REF: 005/ OTH REF; 0141
SOV REF: 006
Card

BENDAO R.; MYSKA, V.; PROCRAZXA, 0 CERVA, L.; HRONOVSKY, V.; DUBANSKA, H.
-
Experiences with the fluorescence antibody method in the diagnosis
of human herpetic keratoconjunctivitis. Cesk. epidem. 14 n0-5:
257-265 S 165.
1. Vojensky ustav hygiony, epidemiologie a mikrobiologie, Praha
a II. ocni klinika fakulty vseobeeneho lekarstvi Karlovy Univer-
sity, Praha.

NN
T
AUTHORt lProchazkat Otakar (Lieutenant colonel; Engineer; Candidate of sciences)
ORG:
(Vojpn
TrIU t
a
and
Pragae -
Fluorescence of staphylococci and some m-thods of their ounpression
SOURCEs Vojenske sdravotnicke listy, no. 6. 1965, 268-273
ITOPId TAGSt* bacteriolog7, fluorescence, bacteria, bacterial antigen, formaldehyde,
:'diagnostic modicine
AB~TkACTt The fluorescence of st+hylococci (and of other bacteria) -my interfere
1. with the Amunofluorescence meth2!~Vor the diagnosis of infections caused by bacte-
.:.rial Agens. I-lisleading positive results may be found. Some methods for the sup-
pression of fluorescence of staphylococci in the system Stapbylococaus pyogones
.,Pasteurella tularensis are described. Formolization of the preparation using a
zrdnimn 5% concentration of formaldehyde and a 3 hour residence tima removes the
fluorescences Papain gives good results only in pure cultures. Trypsin acts well
.but cannot be used because it suppresses also the fluorescence of the homologue
antigen* Origo art* hass 7 tables, fjpr4%7
rSUB CCOEt 06 SUBM DATE: none ORIG REF: 005 OTH REFs 013
Card 1/1 -7'C- UDC: 5%,851.252,o95(:6i2.ol4.445).og~.8z
199/X,

PROCRAMA, Otakar, podplukovnlk Inz., CSc.
Staphylococcal fluorescence and some methods for Ito evpres:3Jlcr;-
Voj. zdrav. listy 34 no.6:268-273 D 165.
1. Vojensky ustav hygieny, epidemiologie a mikrobiologie v Praze.

7
'ACCESSION MR: APS011902 CZ/0064/65/010/002/0077/0084
AUTHOR: Franek, J. (Frmek,-Yu.); Prochazka, 0. (Prokhazka, 0.)
'TITLE: Detection of PasteumtZa ltu&zrensis by means of fluorescent antibodies
SOURCE: Folia micmbiologica, v. 10, no. 2, 1965, 77-84
TOPIC TAGS: Pasteurella tulafensis, fluorescent antibody, ant.Lgen, serum, tulare-
mia, diagnosis
ABSTRACT: The authors investigated various factors 'involved in using the immuno-
!fluorescence method to detect PdsteurelZa tular-ensis and studied the sensitivity,
:specificity, and reliability of the reaction under experimental conditions. Various
4
virulent and avirulent strains of the microorganism were used to iununize fowl,
NAct qPrum with re~zner_t to qnecificitv and hrillance

Cird 1/2
L 6155.8-65
SION HR: AP5013802
ACCES
com-
after boiling for 2 hours the basis of the reaction is the
--all indicate that
scent antibodies with surface antigen. The authors consider the
"Ibining of fluore - .- -C -1- ;~ aAi-F-ntinpr antigen

REHACEK, K.; PROCHAZKA, 0.
Activity of the section dealing with the morphology of polymars.
Chem listY 58 no.9:1133 S 164.
1. Research Institute of Coating Materials, Prague.

,,-MHAZKA 0
Stimulation of antibody formation by bacterial lipopolysaccharide.
The influence of repeated doses of lipopolyeaccharide on antibody
formation. Folia microbiol 6 no.3:157-163 161. (EW 10.8)
1. Department of Microbiology, Institute of Biology, Czeeboalovak
Academy of Sciences, Prague 6.
(ANTIGENS AND ANTIBODIES) (LIPOPOLYSACCHARIDES)
(BACTERIA)

PROGHAZKAJ, Oldrich, inz.
Tall oil reain., r,. zuitable raw material for orcduct~'cn of wrapp ng
pAper size. Paniv a ceiilosa 20 no.2:46-49 ~ 165.
1. Possarc, Center ' tj-ie "Ieveroceske Stesti.

PROCHAM,P.; EM,, P.; KOLDOVSKY2 0.; NOMMEK, M.; ROKOS, T.
The activity of cf-- ml-qla:~e in homogenates of the pancreas T
rate during early rpmnqtnataa develnrmeni6 Ph7siol. Bohemo.slor.
13 no.3,2288-291
1. Institute of Microbiology and Institute of Phy'Oiolog7,.
Czechoslaml: AcadeW of Sciences, Pragiie.

ROKOS, J.; RIGIU. J.; PROCELML. -F.
~~?" -- ~- 1.
Investigations on production of chlortetracycline by Actinomyces
aureofaciens 1. Fol.blol., Praha I no.4s214-219 30 Aug 55.
1. Biologichookiy Institut GhSAN, mikrobiologlya. Praga,
(CHWRTBTRLCTCLIHN, prep"sration of.
technic)

ROKOS, Josef,- RICICA, Jan: PROCIHAMA, Pavel
-.- -11 115111W~
Investigations on production of chlortetracycline b7 Actinomyces
aurenfaciens. Cesk. b1ol. 4 no.6:333-337 June 55.
1. Biologicky ustav CSAV. mikrobiologie, Praha.
(CHLORTETRACYCLINE, metabolism,
Actinomyces aureofaciens, binsynthesin)
(ACTINOMNES,
aureofaciens, biosynthesis of chlortetracycline)

PROCHAZKA, P.; FDKOS, J.; BURGER, M.
"Effect of chlortetracycline on the pancreatic lipase"
Ceskoslovenska, YLikrobiologie. Praha, Czechoslovakia. Vol. 3, no. 4, 1958
Monthly list of East European Accessions (EEAI), LC, Vol. 8, No. 7. July 59, Unclas

MALEK, P.; ROKOS, J.; BURGER, M.; K010j, J.; KRATKOVA, X.; PROCHAZU , P.
Effect of chlortetracycline on eX2ymes & its practical significance.
Cas. lek. cesk. 98 no.9:262-266 27 Feb 59.
1. Ustav klinicke a experimentalni, chirargie v Praze, reditel doe. dr.
B. Spneek. Biologicky ustav CSAV v Praze. reditel akademik I. Malek.
Detska Interna, Thomayerovy nemocnice v Praze, prednosta prim. dr. 1.
Kratkova. P. M., Praba-Irro, Budejovicka 800.
(CHLORTNUCYOLDNE, eff.
on pancrentic n1pha amylaae & lipase, eff. of citric acid
(Cz))
(AMASAS
pancreatic alpha anqlase, inhib. by chlortetracycline (Gz.))
(LIPASMS I
inhib. by chlortetracycline, eff. of citric acid (Cz))
(PANCREZ, metnb.
alpha aaVlase & lipase. inhib. eff. of chlortetracycline,
reversal by citric acid (Cz))
(CITRATM, eff.
citric acid on inhib. of pancreatic alpha amylase & lipase
by chlortetracycli (Cz))

KUBAT, Z.; ROWS, J.; PROCHAMA P - LIEBL V.
Interaction of corneal polysaccharides with basic macromolecule5.
Cas. lek. cesk. 103 no-33:909-913 14 Ag 164.
1. 1 ocni klinika falculty vseobecneho lekarstir-i Karlovy University
v Praze (prednosta prof. dr. E. Dienstbier, DrSc.) a Mikrobiologicky
ustav Ceskoslovenske akademie ved v Praze (reditel akademik I. Malek).

PROCIIAZKA, P.; ROKOS, J.; ZASTAVA, V.; KOLC, J.
Localization and uptake, of chlortetracycline in thle panc-reas.
Cas. lek. cesk. 104 no.27/28:743-744 9 JI 165.
1. Mikrobiologicky ustav Ceskoslovenske akademie ved v Praze
(reditel akademik I. Malek) -a U3ta-,r klinicke a experimentalni
chirurgie v Praze (reditel prof. dr. B. Spacek, Dr3c.).

KUBAT, Z.; ROKOS, J.; PRWHAZKA, P.; LIEBL, V.; NOMIEK, M.
A contribution to trr problem of electrostatic bonds of the
macromolecules of the .-orneal stroma. Sborn. lek. 67 no.6:
190-198 Je 165.
1. 1. ocni klinika fakulty vseobacneho lekarstvi Universit
Karlovy v Praze (prednosta: prof. dr. E. Deinstbier, DrSo.L
a Mikrobiologicky ustav Ceskoslovenskej akademie vied v
Praze (reditelt akademik: 1. Malek).

ROKOSP J.; HAHN, P.; KOLDOVMI 0. -, n2qLAZ-U,2-
The postnatal developsent of lipolytic activity in the
pancreas and small irrbastine of the rat. Physiol. bohemoslov.
.12 no.3.-213-219 163,
l.--Institute of Micrdbiology and Institute of Physiology,
Czechoslovak Acadexq of Sciences, Prague.
(PANCREAS) (INTESTINE, SMALL)
(LIPID META]BOLISM) (CORTISONE)
(ANMALS, NEWBORN) (MILK)

MALEY.1 P.; ROKOS, J.; KOJEGKY, Z.; KOLC, J.; ~~OC~~KA, P.; ZAK, F.
The special role of tetracycline antibiotics in the prevention
and therapy of amte pancreatitis. Rozhl. chir. 42 no.3:174-
180 Mr 163.
1. Ustav klinicke a experimentalni chiru;rgie v Praze, reditel
prof. dr. B. Spaeek DrSc. II vnitrni klinika lekarske fakulty
FU v Olomouci Biologicky ustav CSAV v Praze, reditel akademik
I. Malek. II patologickoanatomicky ustav lek. fak. KU v Praze,
prednosta prof. dr. V. Jedlicka.
(PANCREATITIS) (TETRACYCLINE) (LIPASE)
(ENZYME INHIATORS) (CHLORTETRACYCLINE)

MALEK, P.; ROKOS, J.; KOJECKY, Z.; KOLC, J.; PROCHAZKA, P.; ZAK, F.
The special role of tetracycline antibiotics in the prevention
and therapy of a=te p4nereatitis. Rozhl. chir. 42 no.3:171+-
180 Mr 163,
1. Ustav klinicke a experimentalni chirurgie v Praze, reditel
prof. dr. B. Spacek DrSc. II vnitrni klinika lekarske fakulty
FU v Olomouci Biologicky ustav CSAV v Praze, reditel akademik
I. Malek. II patologickoanatomicky ustav lek. fak. KU v Praze,
prednosta prof. dr. V. Jedlicka.
(PANGREATITIS) (TETRACYCLINE) (LIPASR)
(ENZYME INHIBZTORS) ((;HWRTEnACYCLINE)

Cntdmt of acid W fruit and Wt H. A_
S,dIA60~ mid St , PrechAzka (tstav hyg,,
tlsyj &-avin-'s ~,Zt Mt'Jlod.9 Of
acid (1) were coin~Niretl =d over UO tabulated
Wg. formi
Car ~s Gf f
tent of I in 29 kin, adt Ilever
aelles
Mg.
r4sit thgt in the fresh Wt
C4 SI2 I -Af
tllj~ conttat I and

9(l) CZECH/14-51-4-5/48
AUTHOR: Procha*zka, Miroslavq Engineer
TITLE: Facts About the Cubical Quad Antenna
PERIODICAL: SdL'flovael' Technika, 1959, Vol 7, Nr 4, pp 127-128
(Czechoslovakia)
ABSTRACT: The "new" Cubical Quad antenna has been much dis-
cussed but there is a considerable amount of ineXact
information'about it in circulation. In order to
check some of the exaggerated claims, this type of
antenna has been subjected to a series of tests in
the A.S. Popov T.notitute. A simple construction of
the test aerial was used* The type recommended in
foreign literature proved to be subject to secondary
influences so that the theoretical maximal potential
could not be reached. The question of measuring the
antenna's plus and minus deviations belongs to the
most difficult ones in the whole field. For this
reason, all claims about the sensational gains ob-
Card 1/2 tained with these "new types" must be taken with V-.1,

Facts About the Cubical Quad Antenna CZECH/14-Si-4-5/48
reservation, all the more so when the measuring is
done with simple instruments. The present article
registers results of tests done under relatively
favorable conditions in a well equipped scientific
laboratory. Its purpose is to pacify the technical
public whose great interest has been aroused by
sensational information from predominantly foreign
literature. There are 4 diagrams, 2 gfaphs, 2 tab-
les and 4 references, 1 of which is American, 1
Czech and 2 German.
Card 2/2

PfiCCHA:Z Kftj
CZECHOSLOVAM/Chemical Technology - Chemical Products and H-28
Their Application, Part 4. - Synthetic Polymers,
Plastics.
Abs Jour Ref Zhur - Khimiya, 110 7, 1958, 23246
Author S. Prochazka
Inst
Title Gluing of Glass and Ceramics with Epoxy Resins.
Orig Pub Sklar a keramic, 1957, 7, No 3, 72
Abstract The epoxy-resins "Upon 1001" wid "Epoxy 1200" are used in
Czechoslovakia for gluing glass and ceramics, as well as
glass and ceramics with metals. "Upon 1001" is saUdified
by heating to 2000 20 min., "Epoxy 1200" is solidified
with 4% of a solidifier at about 200 in 24 hours. The ter,
sile strength of porcelain glued together with "Epoxy 1200"
is usually 200 kg per sq.cm and in some cases it is above
300 kg per sq.cm.
Card 1/1

'9R
C Y-A
c
cc
r
46imis Ito Us grmler tendewy Un
TAY

All -N,

l

st
r:
far me3wremout of
v
can ac ce 4
d tsar I Wntevid ca
and H fav V. -t
-Ontered
inate a
theroul ciondUcTMIEFU
.
Wls detd.-ov disks of 24 04t.'ail 6 im, O&V
The temp. gnLdfent is tacasumd by
~P(Alv-
'.
,.
spcdmen' surfa iccum;v
=ents.plated on IbL
Ax U61

A
. . . .................

Z

)12721
C-0
8/08 62/000/021/038/069
BI 71 YBI 01
AUTHORS: B&rta, Rudolf, Procha"zka, Svante, &bek, Franti-eek
TITLE: A method of producing refractory concretes
PERIODICAL: Referativnyy zhurnal. Khimiya, no. 21, 1962, 347, abstract
21K367 (Czechosl. patent 99958, June 15, 1961)
TEXT: Refractory concretes, including also the light-weight concretes,
obtained by addition of loosening or foaming agents, can be prepared from
~ mixture of crushed aggregate, such as corundum and mullite wastes, with
~ cementing agent. The crushed aggregate is mixed either with H 3 PO 49 or
with its solution or a solution of its salts *. Alumina or Al(OH) 3 is also
added. The mass consolidates at 50-3000C. Example 1: composition of'
the mass: mullite (0-5-0.2 mm fraction) 40%; ditto (0.2-0.1 mm) 25%; ditto
(.0.1-0.06 mm) 8%; ground alumina 4%; 60~6-solution.of H 3P04 14%. H3 PO4 is
added to the dry mixture of aggregate and alumina and the product is
vibrated. After several hours, the set mass is heated to 80-1000C in a
form or after its removal therefrom. Example 2. Composition of the mass:
Card 1/2

s/o8lj62/000/021/038/069
A method of producing refractory ... B171/BI01
fused corundum (0-2-0.1 mm fraction) 43%; ditto (6.06 mm) 4W6; H3PO417%.
The mixture is poured into a0form and consolidated by drying at tempera-
tures rising, from 50 to 120 C. After its removal from the form, the mass
is fired at 170OPC. [Abstracter's note: Complete translation
Card 2/2

BARTA, Rudolf, prof.,Anz., doktor technickych ved; BARTUSKA, Milosj&v;
HLAVAC, Jan; PROCHAZKA, Svante
-
High-corundum materials for electric inmilation and electronics. Sbor
chem tech no.3, part D,425-431 159.
1. Katedra technologie silikatu, Vyaoki vkola chemicko-technologicka,
Praha.

36535
~Ss/081/62/000/006/061/117
-va 0 B149/BIO8
AUTHORS: BArta, R., ~roch zka. S.
L_ ___
TITLE: Highly refractory concrete with metaphosphoric acid as a
binder
PERIODICAL: Referativnyy zhurnal. Khimiya, no. 6, 1962, 435, abstract
6K414 (Stavivo, v. 39, no. 8, 1961, 282 - 283)
TEXT: Results are given of an investigation of highly Afractory concretes
(RC) with metaphosphoric acid as a binder. The composition of the mass
for RC in givent filler 50 - 65%, aluminum oxide hydrate 5-15%, 45%
metaphosphoric acid 5 - 15%, additives 35 - 5%. As additives,*substances
are given which have an effqot on the strength, setting and other proper-
ties of RC, e. g. kaolin, highly dispersive fractions of the filler,
alumina, etc. With a corundum filler mass, the temperature of the beginn-
ing of deformation is 1750 0C, the cold compressive strength after drying
2 0 2
is 60 k9/cM , after baking at 400 c it is 160 k9/cm , after firing at 17501~
2
230 kg/cm The mass is resistant to thermal shocks of cooling from 200CPC
Card 1/2

S/081/62/000/006/061/117
Highly refractory ... B149/B108
0
to -30 C. This property is relatad with the dispersivity of the filler.
The properties of a mass in which mullite was used as filler are also
given. [Abstracter#B note: Complete translation.
Card 2/2

28117
Z/013/61/000/002/004/006
D006/D102
AUTHOR: Procha/zkag Svante, Enginf~er, Candidate of Technical Sciences
TITLE: Some considerations on the technology and economy of ultra-
fine grinding
/V
PERIODICAL: Sklar a keramik, no. 2, 1961, 61-64
TEXT: The development of neu ceramic materials calls for much 'inor par-
ticles than are required in conventional fine ceramics. Ultra-fine grindirg
faverage particle zize about 1 micron) for instanceg made possible the de-
i -
velopment of Kitaygorodskiy2s Mlicrolite CM 322~ The article evaluates four
mill types, namely the ballv vibrating, colloid, and fluid-ener7 mills
(micronizers), as to their fitness for ultra-fine grindings (1, In she
majority of cases, dry ultra-fine grinding in ball mills is not practicable
because moot materials after reaching a certain degree of fineness tend to
adhere to the drum walls. Wet grinding produces better results especially
,.-.,hen smaller balls are used. According to Soviet experiences, replacement
of the balls by rollers can increase the mill output up to 30/'a'- ?2) Vibra-
ting mills are more economical than ball millsq but the current models have
Card 1/3

Come considerations,...
W
28117
Z/013/61/000/002/0041/006
D006/D102
a maximum capacity of only 200 liters, requiring frequent recharging. Aisc-
,a.c3ording to Soviet informationp vibration grinding is accorapanLed b-Y a
sonsiderable abrasion of the mill material (l.ull. of iron was fourd in a
fused-carborandum charge after 120 min) and the mills require ccnoi6eraLle
mak'atenance and repair due to the fatigue of the spring material. In the
USS'R vibration grinding was applied to the production of high-frequency
seramiCs. Here the main advantage is that the mixture can be prepared in a
dry state, Economically, vibration grinding is advantageous for prepara-,
tion of smaller material quantities. However, there are still great in-
used reserqes in the current types of vibrating millsq whichg if fully
-atilized by proper improvements, could raise their specific outprat.
113) Due to their energy consumption almost double that of ball mills, and
% 2 'L
other urdavorable factors, colloid mills should be used only in cases in
-7hich ball mills cannot be used at all or only with difficulty. Most pro-
-tising is the use of colloid mills for casting-slip preparation.. (4) The
~zeohoslovak ceramic industry does not yet use the fluid-energy millc,
Tests with a Berc laboratory-size fluid-energy mill produced promising r(----
sults. It was found that this mill type could reduce considerably r.apital
and operating costs as well as floor space, The main obstacle to the ir.-
Oard 2/3' ~A

Some considerations...
26117
Z/013/61/000/002/004/006
D006/D102
troduction of fluid-energy mills in the Czechoslovak ceramic industry is
the lack of up-to-date equipment for continuous and economical production
of press masses from ultra-fine mixtures. (5) Research is currently being
conducted in the USSR and at the VyzkumnSr ustav mechanizaoe a automatizace
(Research Institute of Mechanization and Automation) in Nov4 Mesto nad
V"om'on electrohydraulic disintegration by high-voltage discharges in li-
quids. Although the potentialities of this principle cannot yet be judged,
it seems that this method might be suitable for grinding of very hard ma-
terials. There are 5 figures and 1 table.
ASSOCIATION: Vyzkumne pracovis"te na"rodnfho podniku Jiskra Tabor
(Research Laboratory, Jiskra, National Enterprise, Tabor)
Card 3/3

PROCHAZKA_,_Ia v~ iuz.; MISKOVIC, Vladimir, inz,
Examination of the sintering kinetics of the Cu-Pb system
on modela. S~or VST Kosice 2-65-80 162'.
1. Ceskoolovenska akademie ved, Laboratorium hutnickej
technologie Slovenskaj ak~demie vied, Kosice.

nut EXCERPTA MICA See 15 Vol 9/6 Chest Dis. Juno 56
Pro chirurh. INbu I(: bVI., 1;")k;y, Praze-x;-~..
jentoinie. CavernosloniN HOZflL.-l*L'BEHK.1935,
-no.~tomv.
.A report on 33 cavernou6 pulmonary tb patience treated by cavet
-76, failed Vro, result unknown 12T~, Skin flap
24r,, improved 24'ro, died 30
and 11WOele graftings for closure or frainage bronchus were without obvioui vf1frct.
The beot and most lasting results were achiqved in apical segment of lower lobt.
caviijeo and in patients younger than 3U yr. old. We failed in patients with billate-
ral pi,ocesses and in old people with persistent drainage bronchus, All 33 patients
wel-e rallowed-up 3 to~~ yr. Today we prefer resection.
Prochizka - Prague (XV,9(

EMEK, A., Dr.; PRQ9 V. , Dr.
Seizures In children. Cesk. p-midiat. 11 n0-11:811-813 Nov 56,
1. 11. detska klinika fakulty detskebo lekarstvi v Praze,
prednosta prof. Dr. J. Houstek Detake oddelani OUR v Kutne
Hore, primar Dr. V. Prochazka.
. (EPILEPSY, in Inf. & child
incidence of seizures & unconsciousness. statist. (CZ))

TROCHAUn', V.
Kosice Conference on the quality of a--gricultural machiner-v, :Lmolements, and
J-
spare parts. p. 147. ((Mecbanisace Zpmedelstvi, Vol. 7, No. 7, Apr. 1957,
Praha, Czechoslovalda)
SO: Monthly List of East Furopean Accessions (EEAL) LC, Vol. 6, No. 8, Aug 1957. Uncl.

PROCHAZKA, V.
"Building non-flying maquettes.0
p. 244 (Letecky Modelar) Val. 8, no. 12, Dec. 1957
Prague, Czechoslovakia
SO: Monthly Index of East European Accessions (EEAI) LC. Vol. 7, no. 4.,
April 1958

" il*_ _~ 'i
elfA 1~_104 01 a. 4~0.1 IF" 011 ON on 04 I'lAw- -ft
L M4
J343, MCLKOD VACUUM Mk-.rER WITHOUT RUBBER TUBES. Prochaaka, V.
(Chem. Obsor, 1945, vol. 20, 12-131 Commmic. coal Frague,
19489 vol. 4, 371-373).
00
00
o
it -
u Ss IV 0 is:;
0 ill i? Do 9 IF a R u V! U'n It x
0 see 0 *1
! '-D : '00 A A
00
00
.90
ISO
r of
00
00
a -1 1 Ir III LIN
IX4 An L 1 9 ~W
0 0 '0 0 * 0 0 0 0 so* so 0
L0 4 0 0 * 0 * 0 0 * * * 0 0 *0

wee 0-we
? 1.0 1101 0W. 71 .0 .01
474

-
004 a --L a L - f-AL 'Q I
-! .1. 11.1 1----
.
41
pp.p
"
' ' -

1452. ftwJtMQN (TECHN1..0a) 1N GAS ki-ALYSIS. ?rochazka V and hlijLa,

Fh__e__e_9_~jabs rbent
J. (Chem. Listy, 1946, Vol- 40, 260-263).
for C02 in gas mixtures in 40A &q. KUH. Of a number of standar,1' 1-00
0 types or absorption apparatus, only the Hotepol tube ensures
00 full absorption from d a flowing at the rate of I litre
000 pd* hour.
HA

00
Ah

;jj
T

A "TALLUSIGICAL LITERATURE CLAWFKATIGN 1 2
t3* SITIN IV. woo
%SM#J -1, 0.- 4"
-a", 9 A V ZA An I Sa ?w IM c d3 a 0
1. . 1119 Rot Iclin KIN 41 U
- Aw 9 0 0 0 0 41 IN 0 0 0 0 0 0 0 0 9 0 0 0 0 0
A 4 It 0 0 0 0 * 0 0 0 0 0 0 0 0 & 0 0

-I.-L - -' i F ;I T 7 U
;
0 4 UT-t%IAmLJ!wA-
06,
00 u b w ftbft. V. P-66
-3 -
19"
00"'S ,
w
all-slow to
00
then r tubbe.

00 Its remvok wilb
rho dem the
a WMW' wwb AN ONVON to convem"Ie for b"m
Tur am povwe Aw &a ud*t-ta d the
in um c4~ bmmcb. A toneuk for culibm-
don Is eft". Low"
i2,:
4-1
a
S &V a
It 19 9 a It $I I
4u* 0 loco 40 00 0
0.04000 0*60's 140 09
111;~
11911ralad let
40
.900
too

-- -xiu!
OOA "r--
TOUTIVE 149rHOD AA DETMMINATION Of hLi4ENF. IN WXY,' UVEN GA'S.
Prochazka, V and Klima, J. (Wive, May/June 1950, vol.
30, W-191.). An apparatus was designed for deteraining
008
00 & benzene in coke oven gas by adsorption on activated carbon
and & tentative method in proposed. The sensitivity and
0* .3 correction factor were *valuated by using known rim6unte of ae,
benzene. The correction factor of 0.6 ml is coraidered an
accoptabhe owing to -; wi4a axl;,grimentat rnn,;ft busn.t.-ti..'
content In gas. During industrial evaluation tests In
coke oven plant lastlag twenty four hours, the active
carbon method was compared with the freezing out method
and found to give peactically identical resulta.
4W. 11~4 1, - ---- -- sic., 01).
t
U a At 00 -U V--r x C1 a it K MW 1 14 a S S FW 0 X 9 1 If 00 0 413 0 3 9 T
U K It

vr
Cf I-arch 61 C~
llonthlv -i5t of East Zur

PROCHAZKA, V.; CEKAN, Z.; RATES, R. B.
On terpenes. Pt. 151. Coll Cz Chem 28 no. 5: 1202-1210
My 163.
1. Research Institute for Natural Drugs, Prague, ard Depart-
ment of Chemistry and Chemical Engineering, University
of Illinois, Urbana, Illinois.

ITICW ClEaPPau-uncQ of carvc-n ncr,=i-.t irn raines tmr are oiczacl aztp-:-
fires x e=pL-sinns. it Iris f-un(I C.-T "- Doncilde reucts vilth tho
J,ml and dccj not dfZappear 67 adscrTrim ,n -r difflolm rjx-ou&l It.
Cc=P-I= c3rYM--n cccP,-4mncs on rho .919-feco o.' vie acal act as cxygen aarrier-i
to the ocal aubGtance and to the carim mcn=jCe. This explanaLlon Is
hood un the fact that wet cral r--m-qQs a-arbon wnaxt-la raster Man d-v.,
V4 that air ojCD~Sed In 5"ed ghlss tubes FIWI Coal 15 =cd up ar4
p ~Cty gc~fde- Itritf- f
cqL
corbon In clz~5c J E;~ ~~i; t4zo rv~rv LT.", -,id C_-r j,_fjfj
*=.e wum as L.-I 'Llic m,~~tlvl ry "cr%nt C-11S 'S Vicy -Tre-t 1-.Inc

hr at 2o w 25
gas is Su2pb=
ta-,V-,e =h as allica &C4 - vibicb '1~4
0, surface-acti" oc..j,=ljcn 1.1 "Tricd OUAI In
,,%,C.l c=mnds
ecripam-Bda are S~Z ~dc:
'to strulta--= a d,
In C to u2pbarAl, prealpttated
Midiud Nrthl- chicrids Is ','OtwrAtllW
yjde P114 uA zr~ev
Lr",s rcr
bLiTium era , '20M 11, -'jolghta of the 0
rd 5'-, C-n . 1;,Jtatl= IndicaTAS
tartx-. -7- 3UT96

i
I

POE
The pmcels -,I IfFillfig M ih
autz,cij- -Z pani Na and J112 j~art Nlr-'~ v-ith H (ini tat
pr-ssurt mm fl-'r '-, !Irs rr;ts ~ LH la qt4wlt.
y,z;,'z sto virly and ~t U-cr-o-ca-, alys'. Can be use'l
L j t:rL4.Uk-,

Cherical Pr---ducts Tneir
pplication- Rlewnts. (r/ides. I/Iiner-I :-cids- 3--sc-5,
Salt's .
Jcrur: Ref Zlur-lqlJ-i,-,., -,,TD 3, 1959, 2-3042.
.',uthor Petru, F., LInjok, D., and -Frochazlm V
Inst
T-i tlc L-Auntrial Scale 11rcduct-irm of Scandiwm, and Scandium
Com =ids.
Orig !~~b: Chem Pruwsl, 1, 1%) 5, 230-232 (1957) (in Czech vith
English caid Russian su.-miarics)
-bsi-
r--ct: Live stearr, is pr"scd Into a mixture of 850 Rg of
the residue reraining after the 1-:jrocessi-,IG of Zin-
wald tungs-I.-en-ate and 1700 liters conc -IICI until the
volume of the mixture renches 2500 liters. To each
1000 liters of the solution thus obtcincd 120 liters
Cani-d. 1/2 / S-,?

CZEC.'LiGSLOV,*,Kr,/Cl-iorde-,tI Tecllr-io~o:;y. Chemical Producta and 5.1-heir
.LL'.cation. Ele-L'Ients. Oxides. Miner 1 Bases.
;opp C.
Salts -
Abs Jour: Ref Zhur-Khim., No 8, 1959, 28o42.
of technical &-rande H SiF (27 300 Be) are added, after
2 P I - '
which Vie mixture is re.LL,.ed for 4-5 hours with wet
[s-atur_-tcci/_ stearn, filtered, the filtrate is evapornated,
and the residue is chicd at about 40 0; 5 1:9 of Sc con-
centrate containinr about 40't) SC203 are obtained. The
product is ground in a b--ll mill, sintcred at 6000,
mixed with activated charcoal (6:1 ratio), and chlori-
nated in an tubc pac'Aod .,,ith silicon (length 1 m, 0. D.
60 mxi, I. D. 50 Ta.,,) placed in an clectric Aamace hea-
ted to 1000-11000. fhe process used in the 1,roducticn
Of Scandium oxide and of metallic Sc from ScCl3 is des-
cribed. Elinch.
Card : 21/2

'
J4-
CZECTOSLOVAKIA/Chemical Technology - ChemicEa Products and H-22
Applic:ation, Part 3. - Treatment of Natural Gases
and Mineral Oil, Motor and Rocket Fuel, Lubricants.
Abs Jour : Ref Zhur - Khimiya, No 7, 1958, 22730
Author : 'Inzdimir Frochazka
Inst
Title Production of Pure Methane from Natural Gas.
Orig Pub Sblrka praci vyzkuma. ust., 1957, A8, No 17-26, 35-46.
Abstract A method of producing considerable amounts of CH4 from(-n
natural- gas was developed. The natural gas contained
W: C02 O'll CAa - 0-21 02 - 0.2, W2 - 4.2, qn42n+2
-0.2, CH4 95.0 and S compounds - 0.029 g per cub.m.
Activated carbou, metallic Ca and the method of repeatecl
condensation were used for the purification. C02, satura-
ted and unsaturated hydrocarbons, water vapor, 02 and
other gases are eliminated at the purification.
Card 1/2

CZECHOSLOVAKIA/CL-amical Tecbnology - (temical Products and H-22
Their Application, Part 3. - Treatment of Natural
Gases amd Mineral Oil, Motor and Rocket Fuel,
LuIbricants.
Abs Jour : Ref Zhur - Khimi~-e~, No 7, 1958, 2-2730
The amalytical met;hods used for checking the purity of the
produced CH4 are described.
Card 2/2

PI- A ZI A
(TLECHOSLOVAIKIA Chemical Technology, Chemical Froducts and F~22
Their Application, Fart 3. - Treatment of Solid
Combustible Minerals.
Abs Jour Rof Zhur - Khim., No 14, 1958, No 47976.
Author Bohumil Sule, Vladimir Frochazka.
Inst -
Title. Gas Determination in Ges Carrying Coals.
Grig Pub Sbirka praci vyzkumn. ust., 1957, A8, No. 17-26, 47 - 59.
Abstract A modified method of Peters end Werneke was applied to the
determination of gases physically combined with coal; its
wain distinguishing feature is the application of a bell mill
with inclined shaft. A sample of fresh coal in a sealed
glass flask is put into theball mill; after the air in the
mill has been punDod out, the mill is started. The glass
splinters improve the milling considerably, and four hours
later the coel is a very fine powder of the grain size below
Card 1/2

CZECHOSLOVAKIA / Ohermical technology, Chemical Products and 2 2
Their Application, Par', Treatment of Solid
Combustible Minerals.
Abs JUur Ref Zhur - Yhir,, No 14, 1~58, No 47976
0.001 mmi. The separated gases are removed with a vacuum
pump and analyzed efter their volume has been measured. 1-5
sc-riples Cf b;own and regular coels of Czachoslovakic were
studied by this method. The methri proved to be suitable for
systarriatic determination of gas cortents in gas carrying coal
sem~,s, wUch allows to take meas-ures for thoir degasing in
proper time.
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-----------

CZECHOSLOVAKIA Inorganic Chemigtry. Complex C
Compounds.
Abs Jour: Ref Zhur-Khimiya, No 19, 1958, 63979
Author : Petru F, Prochazka V, Hajek B
Inst : Not given
Title : On the Chemistry of the Rarer Elements. III.
The Extraction of Scandium in a Compact State.
Orig Pub: Collect. Czechosl. chem. communs, 1958, 23,
No 3, 367-371
Abstract: See RZhKhim, 1958, 28159.
Card 1/1

Metal hydrides. II. Reaction of' allali metals vith hydrogen at higher
pressures and temperatures. Stanislav Landa, Fraritisek Petru, Jiri Mootecky,
Jaroslav Vit, and Vladimire Prochazka (Vys. skola chem.-technol., Prague)
Chem. listy 52, 1357-9(1958); df. `Czech. 86,722) (C.A. 52, 67-3270--?G, 11'P-H, and
LiH were prepd. in quant. yieLds by hydrogenating in a 2500 ml. Stainless-
steel rotating autoclave 10 g. atoms of K. Na, and Li, resp., in the presence of
O.-I%---WS2 (prepn.6cf. C.a. 50, '('(1d) or MoS2 (prepn., cf. C.A. 50, 1-3854d) at 120
at,m. and 140-150 . Local overheating destroys the activity of catalyst. In
case of KJ and Nadi (not Li11) it is necessary to heat at the end of 2500 and
3500, resp., to obtain a stable product. The hydrides prepd. are pure enough
to be used in the synthesis of complex hydrides. Jiri Plir,,CL

80,108
Z/009/60/000/04/004/041
J420060 E112/E253
AUTHORS: VIt, J., Procha'zka, V., and Petru', F 71
TITLE: About Lit ium- and Sodium-Aluminium. Hydrideil
1960 Nr 4, PP 183-187
PERIODICAL: Chemicky prfLmysi, I
ABSTRACT: The authors have studied ~he preparation of sodium- and
lithium-aluminium hydrid 'Ifrom. lithium9or sodium hydride
and aluminium. tribromide, according t reaction:
4 LiH - AIX3----~' Li (AlH4) + 3 LiX (X = Cl, Br)~
A critical survey or existing methods is given and reasons
for discrepancies in yield and quality of product are
analysed. It is held, that these can be accounted for
by two main factors: A) presence of traces of moisture in
the reactants and B) inactivation of the surface of lithium-
or sodium hydride. The inactivation is explained by lack
of solubility of lithium chloride in the reaction medium,
which may lead to sedimentation on the surface of lithium
hydride. As a result of these considerations and their own
preliminary studies, the authors have given preference to
aluminium. tribromide as a starting material for their
synthesis. Aluminium tribromide has also better solubility
Gard 1/4 characteristics in benzene, than aluminium. trichloride .

Z/009/60/000/04/004/041
E112/E253
About Lithium- and Sodium-Aluminium Hydride
In preliminary preparative studies the two compounds were
prepared as follows: 1) The lithium compound was produced
by reacting a solution of aluminium tribromide, dissolved
in benzene, with lithium hydride,' using diethylether as
reaction medium. 2) The sodium derivative was synthesised
from alumi-nium tribromide in benzene and sodium hydride
using tetrahvdrofuranel as reaction medium. The mixture of
benzene and tetrahydrofurane are the subject of Czechoslovak
Patent 89.103 (15.3-1959). Diethyl ether has been found
unsuitable, because the sodium aluminium hydride is
decomposed in its presence. The importance of completel-d
anhydrous conditions is again emphasized. If thes;
conditions are adhered to, the addition of reaction
catalysts can be dispensed with, It is pointed out that
particularly in the preparation of sodium aluminium hydride
the presence of free bromine, which could be formed from
oxygen and aluminium tribromide, has a very deleterious
effect on yields. It is therefore essential to carry out
the reaction in an atmosphere of nitrogen, which had been
Card 2/4 previously freed from traces of oxygen. The authors have

E') 3 6 ~
Z/009/60/000/04/004/041
E112/8253
About Liihium- and Sodium-Aluminium Hydride
studied the separation of lithium and sodium aluminium
hydride from the respective reaction mixtures and have also
studied the solubility of sodium aluminium hydride in a
mixture of benzene and tetrahydrofurane. They have
established that the solubility of the product was 4.5 grms
in 100 cc of the solvent consisting of two parts by volume
of tetrahydrofurane to one part by volume of benzene.
Sodium-aluminium hydride was obtained by crystallisation
from this mixture in colourless tetragonal crystals of up
to a few mms in size. The crystallography is described in
another Czechoslovak publication. The authors warn against
the danger of explosion at the final drying of sodium IIX
aluminium hydride in vacuo. As a result of small-scale
trials the authors then describe larger experiments, based
on approximately 20 molar proportions. Experimental
details and sketches of equipment are provided. The
starting material, lithium hydride and sodium hydride were
prepared according to Czechoslovak Patent 86.?22. Aluminium,
tribromide was prepared according to Inorganic Syntheses,
Volume III, page 30. The drying of the solvents is des-
Card 3/4 cribed in great detail. For the preliminary drying an

8036,:-z
Z/00,9/60/000/04/004/041
E112/E253
About Lithium- and Sodium-Aluminium Hydride
alloy K-Na (60% to 4C%) is suggested. The final drying is
carried out either with lithium aluminium. hydride as such,
or with freshly prepared Grignard reagent. The yields of
lithium-aluminium hyd-ride and sodium-aluminium hydride were
89 to 92% and 88 to 93% respectively, A table illustrating
some reactions of sodium-aluminium hydride is given,
Acknowledgments are expressed to T. Bart-ovsky' and VX/"
P. Henge for their assistance in carrying out the
here-described experimental work. There are 4 -figures,
I table and 33 references, 19 of which are English,
2 Soviet, 5 German, 3 French, 3 Czech and 1 Belgian~
ASSOCIATION: Katedra anorganick6 chemie, Vysoka gkola chemicko-
technologicka, Praha (Department of Inorganic Chemistry,
University of Chemical Technology, Prague)
SUBMITTED: December 15, 1959
Card 4/4

%st
I-AAA. anA sMiijin aluminum
h kit, sad.

00. JrA=WAX-
1
Ckx- PrAx 3
h
V

d
a C
Pet
vs. 4k
(
5gi
4
r(6Wml. was owlydrol Onto 0

, 183 7(19W) -E
A ro (2000
with the same vol
of
of ~ed allka
Al ml
.
,
Jr.
d

ure
press
yield) was sepd. by dista. in a N atin, at reduce
Utto 15W mi.) preleicusly chied with Na-K alloy and 41std.
l
t M
0
2
i
h 0
W
-
.
e1 o
.1
m0
H was boiled 0.5 hr. w
t
from
From this Wa. Ste'.) was
Lttd lo (20 m
tdl!-t 16tO UH dwly
rtmained In at. it goin. was It
Until IM mi

A~ .
dm ped a soln. of jUBts fit CA preN. as f4a)ws: 1000 mWdl.
. fr-, Nall ww.pouxed into 1067 g. melted
If M. dl
AlBro and A brairn-violet colbeof this solm was removed,
g
by a short bbilin'gwith LiH or NaH. When 1/s of the AlDrs
soln. had been added to the LIH sola., an addal. am MI. of
RtzO was di3td. frium MeMaBr into the reaction mixt. dur
Ing addn. of the r-glaing AlBr4 soln. The reaction mixt
was then cooled add cientrifuVA. From the oepara~T
soln. solvent was &U. ad the water bath at atm. pressutre.
Cryst. LiBr was nuiloved and the remainder of the solvent,
was distd. off at 90'and 10-20 ram. Hg pressure. AIV

drY N. 'ne
Opemdons were carricki"6ut in an atm. of
yield was 135-140 g jofpurity