SCIENTIFIC ABSTRACT B.V. DERYAGIN - B.V. DERYAGIN

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• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT


DERYAGIR, B.V.; VLASENKO, G.Ta., kandidat khimicheskikh nauk
--
Determining the degree of dust pollution of air by continuous
microvoopye Bor'ba a oil. 2;223-229 '55Y (HLRA 9:5)
1. Chlen-korrespondent Akademii nauk SSSR (for Deryagin) 2.
Institut fizichaskoy khimii Akademii nauk SSSR (for Vlaseako)
(DUST)

4v/
"Cl.

G461 ProWris of 941Wsion. B. DsRVAGIN:

Rmearch, 9, No. 2, 70
-4 (Feb,
A condensed t~amlatlon or a Ruwan papti,
tPesinik- Akad. Napik- SM, 7, 30 (1954)),44m3i sing
the vrork done in thatccuntry and it review oi' lba
Am on the sul~w. Tht commix9j,
rcli 1166o Fmilim 10
adliviatt beh3viout is stakA to We not quite rj;hL
One obscrvation p0vins Ihii. being the wristio,.1 of
specidlo udbtsmn with Ycl,,4ty of mpaiation iv4kh
eould not be explained on the suLface tats;on timmy.
Mha type and mumba of clernkal bonds Pci unit Prel
is houver Lnportant, an txayu* Wns V~c mk f
011
sulphiff in The 1,14=iZinif PiomwL, 7bo 6194iW~,
double Inyor At ft boua"ry ;i thought to be cmix-od-
ingly :mPortent, W my vdwive eve4miw
vork fas bem carried Out .~n circtron ~vi6iai whor!
an adlznjvc AIM 13 learvas 4111~ I'mm it rrji u or
diclevoic sutface so that tepamOon cocm v ( the
boundM. *~ The -imdts implain Lb-. ~iwiak) b of
Odheslm%ith Eli prewwa M the
gases.

moiccular ote, q-,paimim ftendinji liumn:
strm at the IntvFam Faclors ripeciaNy In neue or
further revtkivIt an indicaled. T. CP;XtL
7" P"
, ,

USSR/IChemical Technalcgy Chemical Products and Their Application. PhC.1CW aph-
Materials,, 1-19
Abst Journal: Refere, Zhur - Khimiya, No 19, 1956, 63023
Author: De Lgl~p~ Ievi, S. M.
Institution: None
Title: Problems of Rheology in Production of Ught-Sensitive. Materials
Original
Periodical: izv. Ali SSSR,, Otd. Tekhn. n., 1955, No 9, 43-5;?
Abstract: Pre sented is the derivation of a theoretical equation of the deposi-
tion of a layer of plastic-viscous liquid on a flexible support.
The equation determines the correlati,on between properties of the
liquid (viscosity (-q), limiting shear otress (13), surface tension (CT),
density ( ), rate of travel of support (U) and angle of egress (CC)
of' suppl from liquid) and amount of liquid (h) carried off by the
support. In the case of deposition of a photographic emulsion on a
celluloid base the equation is of the form:
Card 1/3

USSR/Chemical Technal_~~gy - Chemical Products and Thei-.- Application. Phc~-~)graphic
Materials, 1-.19
Abst Journal: Beferat Zhur - Khimiya, No 19, 1956, 6-3023
Abstract: ho t;: o.94(ur?)2/3. i x ~o.93)3 tg,!,,. U 1/3
TI + c 0 B 9)1/2 (rl- 0 3 2
4.58 -
T1_;7_r_o 7scx -i/--' g ) 3/ 2 cr -L/;e
Presented are the results of experimeiital verification of the equa-
tion, on casting of the photographic emulsion', which show that by
means of this equation it is possible to calculate with sufficient
accuracy the thickness of the deposited emulsion layer. For measure-
ment of -j,? and G use was made of a capillary visc,,-.)simeter by means cif
whi--h determil)ation was made of the time of outfl,_~; of the 14 quid at
different excess of pressure,, and 7? an&. 9 were calculated according
to the equation of Shvedov iDtegrated for the instance of liquid out-
flow through a capillary. It is showu that this equation is applicable
to photographic emulsions of different concentration of gelatin. De-
temined were the effects of temperatiue and concentration of the so-
lutions., and also of surface active agents, on '7 and 9. There is
proposed and substantiated a formula of' change in specific viscosity
of gela-.in solution due to the action af the above-stated factors.
Card 2/3

USSR/Chemical Techn-ology - Chemical Prod:ucts and Thei:r Application,. Photographic
Materials, 1-19
Abst Journalt Referat Zhur - Khimiya, No 19., 1956, 6-3023
Abstract; zIt has been ascertained that under the 8,CtiOD Of DW)--dJ-FI'Us~Uj8 Cam-
ponents of color development, which are sui-face active substances,
on change in the viscosity by lo3 tim(!s the coefficient an asymmetry
of gelatin molecule, calculated according to the viscosity equation
of Einstein and Simch, increases from 19 tc, 38. W-It.h the
estated tncreeBe of 7? the nagnitude of G :-hatigea very sllgh-~Iy.
Card 3/3

IHMTAGIN, B.V. (g.Moskva),
Blectrical theory of film adhesion. PJ,z.v shkole 15 no.l:
19-23 Ja-F'55. (MLRk 8:2)
1. Chlen-korrespondent Alcadenii nauk IMM.
(Adhesion)

DIMYAGIff, B.V.
NWPXPWP.,MXFA ~_-v
Discussion on coagulation and flocculation organized b7 the 7hraday
Society at Sheffield, SePt- 15-17, 1954.. Noll.zImr. 17 no.2:149-157
mr-AP 155. (HLRA 8:5)
(Shef field, Inglam -4olloids-Corq;res son)

- rI% ccoi-cit xdd 4kcarid"on 4. 68 O'n",
01"40 Owl &all us Im t" 16F =,P!Md k= !
ad Ito
561,&tie. gives for tht rzect of t:zc mutual
1955) quat Um
(
repO.Ow o( d" 1. OmCe layen on d i Jddmm of Liqu;d
hhui bekwm tivo ooll& 6c a xM imill pi Sa ~hm. 7%v;
&%r of fAms al' miunifam thAujimo L OcttO by Ow
"im~gc =feet" (cf. D. sad S. V. .4erpin, Dop
Nauk. h1w in"'

Ot Powiltra as Usta irijly r
Mish abl-W$-rIn Itunu The
roethod arld apparstim are mi'stilar to thosv devOopod 1-~
D-lbrappn.topiqo.chemiatry.
thrmigh the powder. and the rviisl&nt~t! to its flow im
Ob'nomly, the finer the powder, the grvater tho
Providt-A thatthe premn ofa:,,t I, low tnongh for irtenotion3
belueen air mol. to be.4 Interactions betmeen air wol. and
poredor putic]" (i.e. the molmlar mean fren path ~1' Partide
sp(wing), It is possible to vAculate accurately the op. surfAce
&m,%nfthepowder~ FuUbetcdvntiniietheofyanii(!acrilition
of D.'s apparatus an given. As a t"t, results on powders
of Cu (6-10 IA), Fe (7-12 tLb ard A[ (60-6W ~L) an) impared
with ink-oscolnerneasuremenLa. Oood agreement ia obtained
forCuar,dFe. Agreettk-ntf(irthoAlpoNvdereLil,aii,satite~v
v~xru in -the form of spird-abaptA shavings; the r6crosvorc
measured the overall Jimerawns. while the pblijivo-chem.
method t*ok account of the apaces in the m0din of the

~f
n

tbcc6 ot e~kr~rlirlg imi -fit PO-OkO

Itsi-cd from,,ufitAl vr r
,
tvi., Zhsar.
A Nit.
Ole F-6.
cl rs d i -
~
~
.,
tal!lnll, .
T hz I,-maUi i a vv * est td b, tl~t us~ 0 i7iii and cut~u
%blt: nTar !1e-_ =ctc~led
fl
o

itGn7i iipersi!L1.

z T i S F~ t c

Category USSR/Atomic and Molecular Physics - Gases
Abs Jour Ref Zhur - Fizika, No 1, 1957,N0 926
D-7
Author Deryagin, B-V-, Zorin, Z.M.
Title --IFv-estigatioE-of Surface Condensation and Adsorption of Vapors Near Saturation
Using the Optical MIcropolarization. Method. I.
Orig Pub : Zh- fiz. khimii, 1955, 29, No 6, lolo-loig
Abstract : Description of a new method for investigating the adsorption an an optically
polished surface of glass, based on measuring the changes in the parameters
of the elliptic polarization of light rerlected at an 9blique angle. The
glass surface vas cleaned by glow discharge prior to the experiment.
Card 1/1

k/ A
DE 9.711 A~j
MM/ Chemistry - Physical chemistry
QM&u** Pub. 1,47 - 3/21
Authors I D Eya
&Ln, B. V._~ and Zorin, Z. M,
Title t Study of surface corviensation and adsorption of vapors close to saturation
point by means of an optical micropolarization method. Part 2
NriWiCal I Zhur. fiz. khim. 29/10, 1755-1770, Oct 1955
Abstraot I An optical measurement of vapor adsorption on a smooth glass surface showed
that the steep rise in the isothermal adsorption cur"ie begins at certain
relative pressures. The thickness of the adsorption vapor layer of polar
substances was found to be approximately exponentially dependent upon tile
vapor pressure. The adsorption isothermi for nonpolar substances showed a
steep rise at relative pressures of about 0.98 and approached the saturation
ordinate a sympt otic ally. It is shown that the adsorption vapor layer
i V of ncn olar substances cannot be considered as a separate phase differing
! from volumetric and the reasons for it are explained. Twelve references:
S013mitted 8 USSR, 1 Eng., 2 USIA and I French (1927-1955). Graphs;_ illustrations.,
19e'd" sc; (ly5p-, :Z-,Vst PAYS 1~76srneo

Dd, 0e ~f,-91a /A,Y
4
Hydromechwiies
CArd 1/1 Pub. 22 - V50
Authors I NerPins S. V.* and Deryagin, B. V., -Member -correep of the Aced. of Sao.
of the U&CR
Title i The kinetics of flow and stability of thin layers of liquid along a solid
base takkag into account a solvate film (of the liquid) as a special phase
DOK. AN S;3SR 100/1, 17-20, Jan. Is .1211
Abstract I A mathematical analysis of flow and stability of thin layers of a liquid
along a solid base is presented. The analysis is made from the point of
vie,, of the consideration of thin layers of a liquAd as film of the latter
is a speeial phase (a part of this liquid that lost Its fl uidity). Such
a concept makes the analysis easier. Results of the analysis can be applied
to the solutions of such problems ass 'the movement of moisture in the
ground," eto. Six reforenceal.USSH (1937-1945). Graphs.
Institution& Acad. of' Sea. of ihe USSR. InStitUtO Of Physical Chemistry WLd the
Leningrad Institute of Water Transportation Engineers
Submitted 3 ..........

T?f-- P- Y Aj T~
IISM/Chemistry - Physical Chemistry
138M Pub. ' 22 - 25/51
.Authoje I Deryalgin, 1). V., Memb. Corresp. of Acad. of Sc. USM.) and Karasev, V. V.:
title I Boundary viscosity of orpnic substances studied by the kinetics of the
thinning wetting layers (luring the blow-off process
Perioftcal 4 Dok. All SESSR 101/2, 289-29:2, Mar 11, 1955
Abstract I A chan,-e is described in the method of blow-off which was fouild suitable
for less !3table layers during the blow off of a specific part of the wetting
layer. The "blour-off" method introduced four measuring the viscosity of
3-iquid layers bordering with the surface of a solid body is based on the
dete-mination of the approximate wetting bDundary of the layez obtained
sometimes after its bloTA-off.
Results vh~)w that a solid; body is capable of causing a change in tho
IrOA66"bdF&I -viscasity of the adjoining liquid layurs because of the change in the
oriertation of the solvElIt MolecUlea, NAne referencvs: 7 USM and 2
Subm*4"d English (1934-1954). Graphs; drawing. ---- - -

11_17`77777N 1U
in ~vvlal f Ili Mina.
agi"o'.4 thv v~ _
i th
rh
F;ow,

Y'J:
a ti-me'd fi-lA-me-mts In tb a Mudy of i7ollafmir 15r,
Sdj=zLAutfjr= their ciAoslan in lijuict media,and the
modelling of colloidal process". IN k" T 2
aid Oftnitin. Pl A
W."'L UN~IER" ic I- a ent ineth -
(C.A. 29, JiW-1) was used in the study of polynters by cowt.
ith thin and mmoth polymer Mani.
-kn I C2
T im more tlL Lo. much larger than
the mol. attraction radius, nnd the mihoilmx was unuffected
by quads, but only by the flint tuatatial, Avuethod I
ew-dtk-d. The
ducing filrus of uniforns thickar-m is d
tiou of hydrated ctllulow, etltykeltulme, acetyleellulase,'
nitrocellulose, 4nd beuty1cellulose was stud ied. Theresults
Indicate the Meth(A to be suitabic fur madOling the intor-
action between the EAloidal or dicivrst-i particles and a
211rdia. hl, Stmilvrg

V r--T' V,
IDS, IM4MIDW-Conditions of stible spa" supersatn.
vith water vapars. (similar to condition& in a Wilson cloud
c'jamber) were studied between MaW surfaces at con3t. and
unequal ttmps. The supersatz. can be varied within wide
limits by changing the temps. of the sarraces. The super- a
autu. and condensation can be the bash of the construction
ol'bighlY eff"ve condensation ifilters fDr -i purification by
eliminaticni of submicroscopic particles; such aiijillers were
developed to prevent fsilicosis. Dust 'Rimination attained
w-M.90%- Fach.clust. particle is increased in wt', thou--
sands of Muti in condensat filten developed in. Krivoi
R'4. With he surfaces spaced 5 cm. upart a channel 12M
cm. long tuid a velocity of 5 me., th t . of the cold
uxidthewmtrusurfamatINU50. C;p.cn'fo*gwitbdrt)p-
lets of 5p wx Q,;d M54.
tion filters for 1, 2. and more cum./min. throughout wei
constructed. PAM of this type am vN7 economical and
efficieut in p)%ca that have large amts. of warm waste
water. W. M. Sternberg -
PA

DJARYA G IN p
-A _ _ 4 KIFNIS. S.Te.. redaktor; YURKAN, G.V..
R#
tekhaicheakiy redaktor
(The nature of molecular forces and their significance in science
and practice] Prirocla molskuliarnykh oil i ikh znachenie v nauke i
parktike. Moskva, Izd-vo *Znanie.0 1956. 39 P. (Vaesoiuznoo obahche-
stvo po rasproatraneniiu. politicheskikh i nauchVkh snanii. Ser- 3,
no.35) (MLRII 9:10)
1. Ghlon-korrespondent Akalemii. nauk SSSR (for Deryagin)
(molecules)

DERYAG 111, B. V.
"Present Status of the Theory of the Stability of Lyophobic Suapensions and
Sols" (Sovremennoye sostoyaniye teorii ustoychivosti liofobnyldi suspenziy i zoley)
from the book Trudy of the Third All-Union Conforence on Colloid Chemistry,
pp.225-249, Iz. Ali SSR, Moscow, 195b
(Report given at above Conference, Minsk, 21-4 Dee 53)
Author: Institute of Physical Chemistry AS USSR,
Laboratory of Surface Phenomena (Lab. poverkhnostnykh yavleniy)

DIERYAGIN, B. V.; MOSKVITIN, N. I.; FUT111N, M. F.
"Study of the Adhesion of Surfaces in Liquid Media by the Method of Interlacinp
Threads with a view to the Modeling of the Interaction of the Colloid Particles
and the Character of their Surface Solvation (Izueheniye slipaniya poverkhnostey
b zhidkikh sredakh metodom skreshchennykh nitey s tsellyu modelirovaniya
bzaimodeystviya kolloidriykh chastits i kharakteristiki ikh poverkhnostnoy
sollvatatsii) from the book Trudy of the Thitd All-Union Conference on Col>id
Chemistry, pp. 285-300, -Lz IM SSSK, Moscow, Ma'
(ReDort given at above Conference, Minsk, 21-4 Doe 53)
Deryagin: Corr. Mbr. AS USSR

C-
~,ategory: USSR
V,
Abs Jour: RZh--Kh, No 'j, 1957, 7705
Luthor Deryagin, B. V., Karasev, V. V., and Sorin, Z. M.
Inst
Title Interfaces as Special States of Aggregation of Liquids
T3 - 1.~
Orig Pub: Sb. Posvyashch. Pamyati Akad. P. P. Lazarev, Moscow, Academy of
Sciences USSR, 1956, 065-83
Abstract: See RZhFbim, 1954, 30393) 1955, 13704.
Ga rd : 1/1 -9-

DIMGIRP B. V. not AMMMAj, 1. 1.
"Direct measurements of a the molecular attraction betwen solid bodies I
In a vamm" Soviet ?bps "Dokladj" 1, 280-4p 19,56.

DIRTAGIV. B.V.; VOLAROVICH, M.P.
Petr Petrovich Iiazarey, founder of Russian biophysics. Mofisiks
1 no-3:193-200 156. (MLRA 9:9)
(LJZLRU, FXM FATROVICH, 187S-1942)
(BIOPHYSICS)

IMRTAGIN, B.V.; LIVI, S.M.
Kinetic wetting in coating and a method of measuring it. Zhur.
nauch.1 prW.fot.i kin. 1 no.5:354-358 S-0 156. (NLRA 9: 11)
1. VsesoyuzVy nauchno-tesledovatellekty kino-fotoinatitut.
(Photographic emulsions)

J 4-
Ur
nrj:tne =MCC MIX
ef the prob-Ima 4
7 usin- niet:e'tiv-
,Lf) zind 1.
rni. n
SONOMA

'USS,R/Chemistry of H.*Gh Molecular Siibstaiaces.
Xbs Jour : Referat. Zhurnal Khimiya, No 6; 1957, 19423.
Author : B.V. Derya-in, S.K. Zherebkov. A.M. Medvedeva.
Inpt
Title : %7"fto!=cernT`ngthe~art of Diffusion of Polymer Chains
in the Mechanism cf Adhesion and Autohesion (Sticking
'Ibgether) of Rubbers.
Orig Pub Kollod. Zh-, 19561, 18, No 4, W4-412.
Abstract With a view to study the influence of' relaxation or
diffusion processes on autohesion, the autohesion of
HK and SKB was investigated, using tne method of
crossed quartz threads covered with rubber films
(Kolloid. zh., 1950, 12 ', 431; RZhKhim, 1956, 32140).
It was shown that the energy of autohesion sharply
increased in case of films from 0 to 0.1^and above
0.5 thick, which was connected with the increase of
van der Waal's forces in the first case, and with the
facili-,tation of formation of platforms at easily de-
nard 1/3 -12-

USSR/Chemistry of High Molecular Substances. F
Xas Jour Referat. Zhurnal Khimiya, No 6, 1957, 19423.
."ormed thick films 'n the second case. In the thick-
I
ness interval from 0.1 to 0.51v%, the autohesion
energy did not deliend on the film thickness. The in-
crease or the contact duration increased the autohesion
energy only if the film thickiiess was> 0.5Aj, from
which it followed that the diffusion processes did
not play any part in the autohesion of thin films.
During the study of the correlation of the coinbinabil-
ity of various rubbers and their adhesion one to ,,n-
other and autohesion, the measurement of the shear-
ing stren-th or rubber adhesion was carried out qi1d
it was shown that Jin case of butyl rubber,, the dLf-
fusion processes clid not play u great purt and that
its adhesion strength was determined by the area of
the true contuct dependinG on the mechanical propdr-
ties and by the influence of forces connected with the
double electrical layer, which played an essential
p_xt at the measurement of the work of tearing by the
method of exfoliation. In case of N1K, SKS-30; SKS-26,

USSR/Chemistry of Hi(.~h Mclecular Sifostances. F
Abs Jour Referat. Zhurnal IChimiya No 6.. 1957~ 19423
SKB and nairite. the diffusion processes play an im-
portant p.-.rt, which is confirmed by the correspondence
cf the adhesion magnitude to the cembinabil4ty of
rubbers, and it is most reliable to churacterize the
superficial combinability of rubbers by the simili-
tude of their polarity. ,%t this occasion, T1.2 / Ti
I in case of the stune polarity, and Tl_
. / Til
in case of different pelarity, where I'll Lind 'P12 are
the measured shearinZ ra~_istance of identical und dif-
ferent rubbers respectively.
Card 3/3 -14-

& R
SUBJECT USSR PHYSICS
AUTHOR DERJAGIN, B.V., PROCHOROV,
TITLE The Diffusion Hygrometor.
PERIODICAL Lurn. techn. fis, 26, fasc.
Publ. 4 / 1956 ';_e~iiawed
CARD 1 / 2 PA - 1260
P.S., BATOVA, G.A., LEONOV, L.F.
4, 887-894 (1956)
9 / 1956
The diffusion hygrometers described here are based upon the fact that in the
chamber of the device containing a dry and a humid substance (apd which is
separated from the material to be investigated by a porous wall) under- or
overpressure is produced while the diffusion current is steady. Here 4 vari-
eties of these hygrometers are described each of which may have its own par-
ticular sphere of action. The two chamber hygrometer consists of two chambers
which are separated from the surrounding atmosphere by uniform porous separat-
ing walls (of co&l or mipor ). Construction and mode of operation of the de-
vice are described. Using the two ,.hamber hygrometer is complicated by the
necessary determination of the apparatus constant K, the necessity of knowing
atmospheric pressure, the diffusion coefficient, and air humidity.
The three chamber ~Zgrometer: In order to make the apparatus constant of the
hygrometer independent of temperature and pressure, PROCHOROV and DERJAGIN
suggested a three chamber hygrometer. The first chamber is dry, the second
and third are used for compensation. Construction and operation of the appa-
ratus are discussed. By means of this hygrometer it is possible to determine
humidity independent of temperature and atmospheric pressure, above all
also in the case of negative temperature. Next, hygrometers with assumed

V
Zurn.techn.fis, 26, fasc-4, 887-694 (1956) CARD 2 / 2 PA - 1260
_pensitivit.y and slight inertia are described. Nn order to reduce inertia and
at the same time to increase sensitivity, the manometer travels are strength-
ened by negative back-coupling. The four chamber hygrometer consists of 2
parts: of a two chamber hygrometer with a dry ahamber, and of a device con-
taining a dry and a humid matter and a porous wall. Humidity was measured by
determining the ratio (decrease of pressure between dry and humid chamber /1
decrease of pressure measured by the two chamber hygrometer with dry material).
Conclusions: The above described types of diffusion hygrometers offer some
advantage 7gainst devices hitherto in use for measuring air humidityj they
may be constructed so as to have different degrees of sensitivity and inertia.
Diffusion hygrometers have a linear scale and make it possible to measure
humidity within a wide range of tomperature, also below 00 C.
INSTITUTION: Inzatitute for Physical Chemistry, Moscow.

DIRTAGIN, B.V.; PUSH, V.Z,: TOLSTOT, D.K.
Theory of solids sliding with Intermlittent stops (frictional natural
vibration of the first type) Zhur.telchefis.26 no.6:1329-1342 Je 156.
0m 9:9)
I.Moskovskiy stankoinstrumentallWy Institut Imeni I*V.Stalina i
Institut fisicheskay kh.tall AN SSSR.
(Friction) (Vibration)

LOSS' mmulownt of tho smMo1urva" aris
Ah..'
liclu, 10, INS- -i'rlw kqv~Ath! umt '4,i of carbon
Noel-, M"W klou'nuij~vsl by
'hlo'~fh'el ot 4,ninpirtiall of tho L'tIrW;i-bIavk ilia,
pbragak wfkm AL-titmi4imi by rompnoibn with a
'f'av~' Inpla.) pv-111' in A pl&q3 ww'-0 md ivilb a
3,
BF~-eiFvlly i"gnv-,I in a numia Thu
curvi% Sc,41ho, 1xim4ty 3 M N-4h Aters, werv
idenlical; S,, ru-4-D abniptly an 8 devromet4l W 8bDUt
7; va lower vp&P4 of 8. Vo rimainod "al 'itant, Tho
rosulW rqrr,~-d witt t1hose obli-jimM by
This upt-bod ii movinwndrxi for its mi rLplicity unit
for tho iletzriniriairm of the sirtngtli nf carbon.
PT'B&YU?et-~ 421C4-B
Wiii

SUBJECT USSR PHYSICS CA11D I / 2 PA - 1405
.AUTHOR DERJAGIN,B.V., ABRIKOBWA~I.I.
TITLE Direct Measuring of the Molecular AtIfIraction of Solids. 1.
Problems and Methods connected with the Measuring of Forces in
the Case of Negative Back-Coupling.
PERIODICAL gurn.ekap.i teor.fis, 1,2, fasc.6, 993-1006 (1956)
Issued: 8 / 1956 reviewed: 10 / 1956
The aim of this work in the direct measuring of this attraction as a function of
the separating space and the application of the results obtained for the purpose
of checking the corresponding theories as well us to the problem. of the coagula-
tion of aerosols and colloids. Further, the problem of molecular forces with re-
spect to macroobjects is investigated.
At first the existing theories concerning molecular forces between macro- and
microobjecte are discussed and criticized. The theories concerned are those de-
veloped by LONDON, CASIMIR, POLDER, DE BOER, HAMAKER, and above all by LIFSIC
According to the theory developed ty LIFSI6 interaction of bodies is caused by
the electromagnetic field which always exists in all absorbing bodies, and this
fiele, does not even vanish at absolute zero. The latter theory is suited for any
kind of body and any temperature, but more accurate computations are impossible
owing to the lack of the necessary optical characteristics.
Every direct measuring method is reduced to the measuring of two quantities: the
force of interaction between the approximated objects and the distance between
them. The objects measured were glass and quartz glass; one of the samples was

1.
Zurn.eksp.i teor.fis, 30, fasc.6, 993-1006 (1956) CARD 2 / 2 PA - 1405
plane, the other had the shape of a spherical lens. Measuring was carried out in
air and inAvacuum, but measuring in a vacuum is of greater accuracy. The vacuum
used corresponded to an air pressure of from 1.10- 1 mm torr to several mm torr.
The scales used should have a high directing moment and should nevertheless be
very sensitive. This difficulty may be overcome by a method which resembles ne-
gatiVE? back-coupling. The shifting of the scale balance from the state of equi-
libriim generates an electric current. The latter causes electromagnetic re-
action which forces the balance scale back into the state of equilibrium. Next,
the scheme and the working principle of the device, above all of the scales and
of the photoelectric transmitter, are described in detail on the basis of
drawings. Molecular attraction is, owing to back-coupling, automatically put
equal to the moment which acts upon the frame in the magnetic field and is pro-
portional to amperage. By measuring amperage it is possible to determine the re-
quired force of molecular attraction.
There follows a discussion of the following V- -: Regulation of distance,
self-oscillations, constructional shape of the measuring device, and gauging of
the scales.
INSTITUTION: Institute for Physical Chemistry of the Academy of Science in the
USSR.

-71
/The t"ect of Omnkal sLuUw;;-.ou. -j
Yu. 1P4
30, 11,121 t1,5563. 1-4. .50, 1419~.--A
f, -,i w-s fr-~t cal ~1. ~oh~l mud ffttr txt~ing r ff b-;
-,It, P; w tic Scilu"Ifi6 'nter5c'- ill --3ngfe
I pf 1~0:rs V.-A3 INV- The NO-1, d Mri,)ping Pj~; it ~ is
J':Jr tbC --jnj) %3S-J33jY jLTf!!j5-j JTjfl~ t1jr r'D a T kil
S~rj.~Pn~g For c,:~1ul"Se nil-.atc ~I) r;bbons On &~!S. Plb
alm(a !ndcp:.lecnt d ~Itll%;Cr v 10", =i v
to 30.1,'rO erp/
Tbe incmscol P.1-b -Vith
w.--, ~3milv for ttliyj c61u),--st o it but the F/~ fur -mlou-
1)~c -aretite and bpuzyk-ellul-ow. both on glas,~. 3t,3
IiL:n 10 -:Inies whza -s inertasel fri>m 10-1 to 10 urn./,ce.
wd pl-Ass
J~t low v, tiez. on -Um I aut neutral re tach
M-li-T so thLt Plb Ir, detdi by sjr~l. fc~mm and, henc,,, is in-
4"fFendat of V; a-A wit great it, adileAcrn h dttd, b ~ ebt-e
Olarges, i-dikb are a-xit. becawethre i5ao time for mutual
gee d. oltbe glais,fEra interface was cakd. to
t~.echax
btraAmIlulme~ jmd 1, al)d -7, 4, =d IW
Uctlav, ~md xA)~viDyl ck loride),
If the gwzl Plate " mltamla!~-,~d 'Nith ncw-
:163, It: !O.mjutc, t-- a S.. grcw~e.
P,,~ -;ra; vmtly v-44red. Th! Pib vilue !---r a f1m of I cr;
~r4ld poly=trs titerti--M froin ~i Na butadimc rabhex>
>

UWR/Atcmic and Molecular Physics - Molecular Physics
Abi; Jour : Ref Zhur - Fizika., No 4, 1957~ 8957
Author :Abrikosova, I.I., Der)nKia,_B_,V.
Title :Direct Measurement of Yolecular Attraction of Solid Bodies.
U. Method for Measuring the Gap. Results of Experiments.
Orig Pub :Zh. eksperim. i teor. fiziki, 1956, 11, No 1, 3-13
Abstract :Results are presented of measurements of molecular attrac-
D-2
tion for fazed quartz for distances from 0.08 to I micron.
The data are in good agreement with,calculations using the
formula of the theory of E.M. Lifshitz (Ref.Zhur. Fiz. 1956,
16311), which deals with the case of separations which are
much greater than the wave lengths of the fundamental ultra-
violet absorption bands, which contain undetermined empirical
constants. The agreement obtained substantiates both Lif-
shitz theory and the electromagnetic nature of the molecular
forces, which was already suggested by P.N. Lebedev in 1894.
It is noted that the results of measurements of Overbeck and
SpF-naay exceed the theoretical value by almost a factor of
104, apparently owing to the electrostatic effects which have
not been eliminated.
Card : 1/1

W24 Ima--umkif- iLbTa~~~kp;,-
L2
M
It lam ii!
W-11

.NRYAGIM. B.V.; DUMN, S.S.
Notion of aerosol particle@ in a diffusion field. Dqkl.AN SSSR io6
no-5t851-854 1 156. (K= 9:7)
I.Chlon-korrespondent AN SSSR (for Deryagin).2.Institut fizIcheekoy
khimii Akademii nauk SSSR.
(Aerosols) (Diffumion)

SUBJECT USSR / PHYSICS CARD 1 / 2 PA - 1386
AUTHOR DERJAGIN, B.V., ABRIKOSOVA, I.I.
TITLE Direct Measuring of the Molecular Attraction among Solids in
the Vacuum.
PERIODICAL Dokl.Akad.Nauk, 108, fasc.2, 214-217 (1956)
Issued: 7 / 195-6- reviewed: 10 / 1956
Pro.-vious meas--,ring of molecular attraction occurring between two solid bodies
(plate and spherical lens) in air as a function of the interspace H between
them was made very difficult by the viscosity of the air in the space between
them. The cause of this is discussed on the basis of the equation of motion of
the scale balance.
In spite of these difficulties a number of measurements was successfully carried
out with. a sufficient degree of reproducibility. The influence oxercised by con-,
cussions was successfully reduced to a minimum by the erection of a device on an
amortize.tion platform which, in turn, was placed upon a cement base. In order to
attain better stabilization of the interspace H, a two-mirror s,ratem was used.
For the radical simplification of measuring and increasing its accuracy, a de-
vice for the carrying out of measurements in the vacuum was con:itructed. At from
0 1 to -3 mm Hg it was possible to reduce the time constant to fractions of a
second :in spite of the fact that the damping necessary for the prevention of self-
oscillations was conserved.
Measuring results are entered into a diagram (abscissa - 1g H, Drdinate - 1(:,- F),
The rep:roducibility ot measurings separated from one another by long periods

Dckl.Akad.Nauk, 108, fasc.2, 214-217 (1956) CARD 2 / 2 PA - 1366
(years) and carried out with different samples of quartz glass is satisfactory.
By means of the theory of the molecular interaction of convex surfaces it is
possible, from the measured values of F(H), to compute the energy u(H) of the
attraction of the parallel surfaces separated by the interspace E according to
the formula u(H) - F(H)/2nR. Here R denotes the radius of the spherical. sur-
face. The values of u determined in this manner are entered into a diagram as
functions of 1. The values of u(H), which were found with the help of various
considera'bly curved lenses, are in good agreement, which confirms the molecular
nature of the effect under investigation..The values obtained for F and u are
about 20 times lower than those computed with -the formula of LONDON, and they
also agre-9 better with the theory developed by H.B.CASIMIR and MOLDER (Physw
Rav. 11, 16o (1948)). However, an accurate comparison on the basis of this
theory is still not possible.
E.M. LIF91C, Dokl.AkadNauk, 21, 643 (19501 ibid. 100, 879 (1954), iurn.eksp,
i teor.fia, 21, 94 (19 5) developed a strict theory on the molecular inter-
action of macroscopic bodies. However, an exact comparison with this theory
necessitates full knowledge of the optic properties of the material in its ab-
sorption domains. However, the character of the absorption of quartz permits an
approximated theoretical estimation of the forces of attraction. The values of
F(H) and u(H) computed by the MAN method agree sufficiently well with
measuring results.
INSTITUTION: Institute for Physical Chemistry of the Academy of Science in
the USSR.

I)C-R~AGIN, B.1
SUBJEdT USSR / PHYSICS CARD 1 / 2
..AUTHOR DBRJAGI1;,B.V., KROTOVA,11.A., KARASEV,V.V.
TITLE The Influence exercised by Electric Phenomena
the Destruction of Some Solids.
PERIODICAL Dokl.Akad.Fauk 1LU, fasc. 4, 728-730 (1956)
Issued: 10 / ;~_56 reviewed: 10 / 1956
FA - 1433
on the 11nechanism of
At first soma previous works bearing on this subJect are discussed. The authors
concentrate their atterition on the occasion of these experinments on the destruc-
tion of mica and on the determination of the work of destruction as a function of
velocity. In this connection they assume that on the occasion of the destruction
of crystalline bodies (particularly mica) strong fields may occur in the inter-
space betwee:a the surfaces to be destroyed by the separation of the charges
arranged in mosaic form. In the course of previous experiments the authors dis-
covered an emission of electrons on -the occasion of the destruction of mica, gypsum,
and other cr,ystals in a high vacuum (10-4mm torr). N.A.KROTOV and V.V.KARASEV ob-
tained pictures on the occasion of a repetition of these experiments which dis-
tinctly show that the maximum of radiation occurs in the interspace between the
destroyed plates. Also the fission surfaces radiate electrons.
Also in this case it was possible by the employment of suitable methods to observe
the fine strijeture of the surfaces to be fissioned. In the case of a fission
parallel to the fission surfaces fraying was noticed In gypsum. On the basis of
their own pr.aviously carried out work on adhesion the authors assumed that the
energy necessary to destroy mica must depend on velocity and that it also depends

Dok1.Akad.Naitk,10Sj, fasc-4, 728-730 (1956) CkRD 2 2 1433
A
on other factors as e.g. pressure and nature of the gas (in which detitruction
takes place). Experiments carried out in connection W4 th the destruction of
mica were und.ertaken by means of an adhesiometer with a rotating disk. The
character of the adhesiograms differs with different pressures, and if pressure
is reduced the work of fissioning increases. In the case of the fissioning of
mica in an argon atmosphere the work function is less than in air, and this is
the case at different pressures of the surrounding medium. Luminescence occurs
within the dcmain of rapid stripping. Also in the case of the stripping off of
films consisting of polymers from different carriers luminescence occurs In an
argon atmosphere within the domain of rapid stripping. The modification of the
work function under these conditions is based upon the influence exercised by
argon on the amount of the discharge potential on the occasion of thrz drawing
out of the coatings of the electric double layer.
It is interesting to compare the destruction of crystalline bodies with the
tearing of rubber and some fibrous substances ol *' the type of cardboard, for
these substances show no traces whatever of electron emission when torn in a
vacuum, as te3xing takes place'along the film of the high polymer in the case
of not too large quantities of filling material.
INSTITUTION: Institute for Physical Chemistry of the Academy of Science in the
USSR.

USSR/Chemistry of Colloids - Dispersed Systems, 13-14
Abs Jour : Referat Zhur - Khimiy-a, No 6, 1957, 18778
Author : k.V. Deryagin.
Inst : Academy of c ences of USSR.
Title : Theory of Sol Coagulation Taking into '-'onsideration
SplItting Pressure and Mechanical Properties of Thin
Layers.
0--ig Pub : Dokl- AN SSSR, 1956$ 109) No 5) 967-970
Abstract : A correction for the decrease of the mobility of parti-
cles at -their drawing together accompanied by the squee-
zing out of the medium from the space between particles
was introduced into the theory of coagulation of disper-
sed system in presence of acticn-at-distance forces
amoaq particles, which theory had been developed by N,,
FLO~S (Z- 7,'Ys-, 1934, 89, 736). It was shown that this
corrt3ction does aot alter the order of the coagulation
speed magnitude, In case that the medium viscosity at
Card 1/2 - 333 -

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difirultin am calruLMEM-1, :a, dAzut eil 4n DAIM-n all,!
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P// PHASE I BOOK UPIDITATION 6og
B '. Zakh vayeva, N. N., Talayev, M. V., and Filippovskiy, V. V.
poverkhnosti poroshkoobrazny1ch tel po soprotivleniyu
filltrataii razrezherinogo vozdukha (Determination of the Specific Surface of
Powders on the Basis of Filtration Resistance to ftrefied Air) Moscow, Izd--%mo
Akademli nauk SSSR, 1.957- 59 P. 4,000 copies printed.
Sponsoring Agency: Akademiya nauk SSSR. Institut fizicheskoy khimii.
Ed. of Publishijig Bouse: Shteymbok, G. Yu.; Tech. Ed.: Pblesitskaya, S. M.
PURPOSE: This pamphlet presents B. V. Deryagin's method of determining specific
surfaces of porous and povdered substances for use in various fields of
techriology. It is meant for research workers and for workers in
inductrial laboratories.
COVERALM: The authors describe Deryagin's method as a simplified and rapid
method for the determination of specific surfaces of porous and powder-
ed substances. The method is based on the theory of filtration of
rarefied gases through porous media, takLng into consideration tlx.-
Knudsen flow. Chapter one gives a detailed description of the determin-
ation of the external specific surface from the steady state flow of
rarefied air. The equation for the specific surface is:
Card 116

Determination of the Specific Surface of Powders (cont.) 6og
24 _V~ ~2
So -f3- -:ff
2 3 QVM-RT x
expressed in (S0 cm/cm;
where So 2 specific surface (in cm2 per 1 cm3 of the porous medium)
9, qju~bity of moles of air flowing throughl cm2of a porous layer
,41x cm thick per second, with a preBsure drop across the porous
medium Ap dynes/cm
"por3sity" equal the ratio of the pore volume to the total volume
of the medium
M - mean molecular weight of air (29.3 g/moies)
R - universal gas constant ( in erg/mole. degr-)
T - absolute temperature, *K
Card 216

.Determimtion of tbe Specific Surface of Powders (Cont.) 6og
The apparatuz (Fig. 1, 2) was constructed at the Institute of Physical Chemistry,
AS USSR. It does not require a skilled operator. The determinations can be ac-
complished in 20 to 30 minutes with an accuracy of 2 to 5 percent. The average
porosity was accepted as 0-5. Flor certain powders, e.g., quartz, the specific sur-
face value can be related to the 0.5 porosity value after introduction of a cor-
rection into the formu-La
8 U
0
as suggested by S. G. Ehvartser. 7his empirical correction equals I for 0.5;
K _ S1. - -~;---- [Note: x missing in text]
RA XX i
where K = constAmt of the apparatus
h 29 pressure drop across the sample (in cm)
p
h a, flow-meter reading (in cm).
q
Table 6 gives a comparison of results obtained by means of the Deryagin method with
Card 3/ 6 1

.Determination of the Specific Surface of Powders (Cont.) 6o9
'results frm several other methods u-sed for the determination of specific surfeces
of carbon blacks (Investigators: Tesner-Polyakova, Brunauer-Emt-Taller, HarXins-
JUra, Zuyev-Mikhaylov, Lsboratox7 of Academician A. N. Frumkin, Iaboratory of Acade-
mician M. M. Dubirtin).
Part II describes the determination of the total specific surface of porous media
and powders based on the transient filtration of rarefied air (Knudsen flow). 7he
total surface includes surface areas of blind pores and channels. The equation
used is S, 11a 9 L 2RT
13 1 - 9 x2 -n M
where 81 - specific surface in cm2 per 1 ca3 of the porous medium
8 = porosity, equal void volume/total volume
x - height of the sample (cm)
L -time lag (sec.)
M - molectaer weight of the gas (g./moles)
R - universal gas constant (erg/mole degr.
T - absolute temperature, OK
and 131 - 1
cm
Card V 6

Dkermination of tle Specific Swface of Pbvders (Cont.) 6og
The results obtainod are in good agreement with results of the nitrogen -adsorption
method. Table 7 O.vea data obtained by means of various methods (transient flow of air,
Deryagin's steady otate flow, nitrogen-adsorption method). Fig. 9 and 10 show the
apparatus used in the transient flow method. Appendix 1 contains detailed instruct-
ions and Appendix 2 has diagrams of details of Deryagin' apparatus. Deryagin's method
permits the determ!Lnatica of specific surfaces of fine and course dispersed materials,
and the difference betveen results obtained from the steady state and transient f2nws
gives the specific surface of blind pores and c 1s. There are 28 figures, 9
tables, and 18 reforences, 5 of which are English, 1 Gerran, and 12 Soviet.
TANZ OF
CONTMWTS
Introduction
3
PtLrt I. Method for the Measurement of the Specific Surface by Wans of the
Steady St%te Phriefied-gas Flow 7
1. Apparatus and measuring methods 8
2. Selection of the capillaries of the flow meter 16
3. Conditions of the experiment 18
Card 5/6

Determination of the .9?ecific Surface of Powders (Cont. 6o9
4. Calculation of the specific surface
5. Determination of the specific surface of coarse powders
6. Results
Part II. Method fbr Determining the Total Specific Surface of Powders and
Porous Materials
1. Apparatus and measuring methods
2. Measureient of pressure
3. Results of measurements
Conclusion
Bibliogmphy
Appendix 1
Appendix 2
AVAILAZZ: Libiury of Congress
Wfal
Card 616 9-17-58
21
29
32
33
37
39
41
42
43
53

DERYAGIN, B. V., PROXI(OROV, P. S., IZMAILOVA, B. V.
"Influence of Adsorption layers on the Growth of Condensation Nuclei in a
Super-Satwated Atmosphere," paper to be presented at the 2nd International
Congress v.! Surface Activity, International 'Union of Pure and Applied Chemistry,
London, 12 April 1957.
Phys. Chem. Lab. of Surface Phenomena AS USSR

DERYAGIN, B. V.
wcomputat,Lon Method of Separation of Capillary Condensation and Adsorption
in Porous Bodies "kccording to Experimental Datan paper to be presented at the
2nd International Congress of Surface Activity., International Union of Pure and
Applied Chenistry, landon,, 12 April 1957.
Inat. Fbysiaal Chemistry., AS USSR

DERYAGIN, B. V., ZORIN, Z. M. and KARASIYEV, V. V.
"Properties of the Folymolecular Boundary La of 'Odds According to
Absorption and ViBcoaimetric Meaeurements.," pape7t?re~sete t the 2nd International
Congress of Surface Activity, International Union of Pure and Applied Cheristry.,
London, 12 april 1957
In9t. of PlUsical Chemistry, AS USSR

DERYAGIN, B. V.,v KROTOVA.. N. A. and KARASIYEV, V. V.
nElectric Phenomena Accompanying the Formation of Now Interfaces and Their Role
in Adhesion and Cohesion,,* a paper to be presented at the 2nd International Congress
of Surface Activity,, International Union of Pare and Applied Chemistry, Iondon,,
12 April 1957
Inst. Physical Chemistry., AS USSR

DEPYAGIN, 1. V.
with Khresev., V. V., "Die Untersuchung der Viscositat von FluEsigkeitagrenzl
schischten nach der "Wegblesmethode."
with Abrikowov, I. I.1 "Die Messung dor molekulen zigischen festen Koerpern
bei Groeven Abstanden."
with Imaylov, G. I., and FROXECEOV, P. S., "Moglichkeit der Oberlachen-
Aktivierung und Passivicrung von Reimen fuer Wets serdauq)f -Kond ens at ion."
papers delivered at the Intl. Cong-on Suffece Activity , L,:)ndon, 8-12 Aprl 1957-
Arigevandto Chemie, No. 16, 1957.

-S
DERYAGIN, B. V. and TITEYEVSKAYA, A. D.
ItStatic and Kinetic Stability of Free Film" a paper submitted at
2nd International Congress on Surface Activity, 8-12 Apr 57, London.
Deryagin, and Titeyevdkpya, Academy of science, Institute of Phycioal Chemistry,
Bolsheye KelczhszkaYa 31, Moscow, USSR.
E-5972

DM-1t,GIN, B. V. (Trof.) and 'Llk-4MIEV, V. P.
"Investigation of Boundary Lubrication in Kinetic Friction by "leans of a
Wire Tribo-,'-leter, 11
paper presented at the Confer~-:nce on Lubrication and Wear, held at the Inst.
of --echanical !:,ngineers, London, 1,03 Cat 57
Trans - A-3099501, 27 Feb 58

DERYAGIN, B. V.
"Theory of Stick-Slip Sliding of Solids,"
palx-r submitted for pre:3entation at the Conference on Lubrication and Wear, London,
1-3 October 1957.
The Chartered Mochanicil Engineer, Sep 57, P. 34o-42.

A-' fy,
137-58-5-10610
Translation from: Referativnyy zhurnal, Meiallurgiya, 1958, Nr 5. p Z49 (USSR)
AUTHOR: Deryagin, B. V.
TITLE: A Contribution to the Theory of Friction (K teorii ireniya)
PERIODICAL: V sb. : Razvitiye teorii treniya i iztiashivaniya. Moscow
AN SSSR, 1957, pp 15-Z6
ABSTRACT: An examination of the major stages in the development and
the present status of the theory of boundary friction (BF). BF is
defined as the extreme condition of friction (F) in which the rate
of slide becomes so small that the effect of fluid-film viscosiiy
upon F may be ignored and the clearance becomes so small 1hat
the interaction between the surfaces of F and the layer of liquid
separating them where the clearance is smallest becomes the
decisive factor. The development of a quantitative theory of BF
encounters great. difficulties, occasioned by the inadequacy of
our ! nowledge of the structures and properties of those poly-
molec-alar boundary films which lie within tne range of influence
of the solid surfaces. In order to understand the total concaten-
ation of phenomena accompanying BF. it is necessary in the
Ca rd 1/2 first place to take into consideration the orientation of the

137-58-5-10610
A Contribution to the Theory of Friction
elongated active molecules that enter into he composition of lubricants in
polymollecular boundary strips at their interfaces with solid "Valls. It is shown
that further development of the mathema!ical 1heory of boundary friction re-
quires a development of the hydrodynamics of an anisotropic liquid. the prop-
erties of which differ along two mutually nori-nal directions as do the elastic
properties of analogous crystals. Bibliography. 21 references.
L.G.
1. Friction-ThE-ory
Ca rd 2/2

80803
0 SOV/124-59-9-10352
Translation from: Referativnyy zhurnal, Mekh&nJ.ka, 1959, Nr 9, P 113 (USSR)
AUTHORS? Vlasenko a Ya Dernyzin, B.V., Kudrsovrtseva, N,M., J~rokhorov
P.S., Storozhilova, A.I., unurakov, V.V,
TTT.'LE- Flow Methods for Investigating Lt4nospheric Aerosols
PERIODIC.jkL-. V ab.: Issled. oblakov, osadkov I grozovogo elektrichestva.
Leningrad, Gidrometeoizdat, 1957, PP 185 - 188
ABSTRACT-t Not only the number of particles within the volume unit, but
also their dimension distribution can be determined by the
ultramicroscopic flcw investigation method. For this purpose,
an optical discriminator (photometric wedge), making it possible
to obtain the partiale-brightness distribution, was mounted into
the target illuminating device of an ultramicros~~ope, A new
wedge-graduation method is described; the graduation curves of
the dependence of particle dimensions on the wedge position can
be obtained quickly., when applying the method mentioned, The
authors report on the flow method applied to the study of the
Card 112 atmospheric condensation nuclei. 'For this purpo!ie, a simple

80803
SOV/124-59-9-10352
Flow Methods for Dwestigating Atmospheric Aerosols
accessory device is developed for "revealing" the condensation nuclei ~on-
taining in the atmosphere. This accessory device consists of an air-
moistening chamber and a cooling channel, in which vapor condensatIon on
the condensation nuclei proceeds,. The condensation nuclei, enlarged in
this way, are, carried away by the air current, arrive at, the cell of the
ultramicroscope, and can be recorded by the observer, The optimum opera-
tion conditions of the device were determined experimentally. af the ult.ra-
microscopic flow method, 'the automation of registering aerosol partli~les or
Virevealed* condensation nuclei can be brought about. The design of an aut-o-
matic. counter developed for this purpose,is presented. This sounter *-axrriss
out the registration of aerosol particles of high numerical concentrations
without failing.
S.V_ Severin
Card 2/2

124--58-9-10057
Translation from: Referativnyy zhurnal, Mekhanika, 1958, Nr 9, p 88 (USSR)
AUTHORS: Batova, G. A., D gin, B. V Leonov, L. F. , Nikol' skiy, A. P.
Prokhorov, P.
TITLE: Diffusion Hygrometers (Diffuzionnyye gigrometry)
PERIODICAL: V sb. : Issled. oblakov, osadkov i grozovogo elektrichestva.
Leningrad, Gidroi-neteoizdat, 1957, pp 189-191
ABSTRACT: Bibliographic entry
1. Hygrometers-.-Equipment 2. Diffusion
Card 1/1

JTI
Ll
t oll

and 'cular Physics - Physics of High- D-9
Molecular Substances
Abs Jour : Ref Zhur - Fizika, No 1, 1958, 852
Author : Dery&Eftn,
Inst
Title : On the Applicability of the Binomial Law Friction to the
Friction of Rubber.
Orig Pub : Kolloid. 2h., 1,957, No 3, 398
Abstract : No abstract.
Card 1/1

- .- -- I"M
0

DICRTAGIN, B.V.; ZAE:HAVATEVA, TAUTEV, M.V.; LOPATIVA, A.M.
Apparatus for determining the filtration coefficient and capillary
permeability of porous and dispersed bodies. Trudy Inst. fit.
khim. no.6:123-130 '57. (MIPA 11:10)
(Capillarity-Measurement)

DIRYAGIN. B.V.-, ZAKHAVAYEVA,
:~
Methods and apparatus
dispersity) of porous
filtration rate of
131-139 '57.
N.N.; TALAYIW, M.Y.; FILIF.POVSKIY, V.V.
for measuring the specific surfaco
bodies and dispersed m#terials by the
rarefied air. Trudy Inst. fiz. khim.
(MR-k
(or
no.6:
11:10)
(Porosity-41sasurement)

IZMA,YLOV)., G.I.; PROKWROV, P.S.: DXRYAGIN. B.T.
I
Flow mmthod for measuifng critical supereaturation for condensation
cmnters. Trudy Inst. fiz. khim. no.6:159-161 '57. (KRA 11:10)
(Condeneation)

f~ Y o" C'7
M
V
AUTHORS: Deryagin, B. V. and Duk-hin, S. S. 49-6-8/21
TITIiE: -bii---~h-einf-luence of thermophoresis on the coagulation of
cloud drops. (0 vliyanii termoforeza na koagulyatsiyu
oblachnykh kapell).
PERIODICAL: "Izvestiya Akadem.Li Nauk, Seriya Geofizichaskaval'
(Bull in of the Ac.Sc., Geophysics Series),-1-9-57-,No.6,
pp. 779-784 (U.S.S.R.)
ABSTRACT: The influence of thermophores-is forces is investigated
on the movement of aerosol particles in conjunction with
a temperature drop in the neighbourhood of mist drops.
The authors restrict themselves to the temperature field
and consequently to the thermophoresis ."orces in the
neighbourhood of the drops, the dimensions of which do
not exceed several tens of 1i since with a decrease in the
drop dimensions, other conditions remaining equal, the
thermophoresis force increases and the considered problem
can be solved more simply if this simplification is valid.
The convective heat transfer and the convective diffusion
during the fall of particles of such dimensions can be
disregarded and the temperature field and the vapour
concentration in their neighbourhood can be considered as
CardlJ2 being spherically symmetrical. The investigation in this

49-6-8/21
On the influence of thermophoresis on the coagulation
cloud drops. (Cont.)
paper is theoretical. The thermophoresis force between.two
particles is expressed by eq.(16), p.?o4. It is concluded
that the rad-iometric force does not have any appreciabl'
influence on the coagulation of the electrically chargel
particles. 'The thermophoretic repulsion force caused by the
radiation of the Sun can prevent coagulation of cloud
droplets even in the case of very low charges.
There are 1 table and 5 references, 2 of which are Slavic.
SUBMITTED: February 23, 1956.
ASSOCIATION: Institute of Physical Chemistry, Ac.Sc., U.S.S.R.
(Akademiya. Nauk SSSR Institut Fizicheskoy Khimii).
AVAILABLE: Librar7 of Congress
Card 2/2

1 17 anumblMa in ll~rjm"ATLI)e
7Eb"-;it:'lleat big of if almu h~d no effect, but 1 ealting of n
Wackxcllurfi~ 1.btno. ~,Ilrre INCO I Nups. E.g.,
by 19'71~ it. 4 his.t W U -aitlt M did :j;?t r-h2--je Vv~s
to, Butyl rubba, j I was mistd by M ;m )n than bY
ch-vin-I tlacl-, Vic R' hor Nahit -,vubL--r Lmx t$, chmnl
Uack- im iummedalmov., IW4W Oten theM flwassaal-
I'laetell, liul 5Andbh9tlnjl bad A smat tOrct m11 ior ll*aoit
rubbo ccntg. M and, lot Bultyl rutAh" Copts. Itl wr4cl t-jack.
Ile 11, is Wv when ~'bv ap'uAt6w 1*.twa sl.'~ I and 11 is w
Hlarmnn

DUTAGIN, ~~~ OUNNOW"
A"IUabillty of the binomial friction law to the friction of
rubber. Kell. shur. 19 no,,3:'398 NY-Je '57. (NM 100)
(Rubber) (Prietion)

The jWntion W puMetifion of
MM
noleiifi*= 1 "4NTjN*TTw
-%c; ~Vzi slid
3s4ff 99L-Q1-
N
57j-,~--A it
I Aar- SSOV(in j maksl9m,, 11*0 v-, ipar ta"~
are - !0,025 MUed with a st"m al molst air (wj, moks/
st-C., H;O vtpor p"MSUM --10. and A vw vnriod until
lisible tog tippt-ared in the trl3jag chamber; fht!Utrmtttl~
N OurrespouMug to fog famia-tkin was calcd. as S -o ml' +
ARt '=Por
VIb' N Me ~Ylitlibs I btained bY v9piwintian of
rod n the dry o
dial' NtLCI. soW')Vhavont uced i
vater (0S4 to 1.4,M), the sualler Yvas Cat ap
ludius of tile crystills (04t, ito 0.036 ON=
x are e e3pt., S iwre:tsed by,
adsorbed tit the M
it.g.,40%,.but(Et&. ;C!C-,M , and iSD-AnlOJI IGIvert.-tj
.5. A SiOt 2% NQIC04
PaM wage heated to 12)-7.12* befam the upt
taLvdSujito4-fcId. Tric'Chtm. or thermal trOitineia of
the coudeuntiwis nutid djargits the accommodati)v coery. ),I
ftni.
-u

6 iJ-t-
humidity metpr.
Pril
A and A:
a Z -t-A alecf. C,;K
Watt
1!,a con:suuctcll for moii;turc detti. in a
09~tction I diflusion thipugh a porous
Inellibrac4 with-alix!'!I d, 'd bly larger than the
I VIaT. consl en
t i air and steara muls. A chzwnb~r
near) fr"- Vath~6f ~jh~ 1,
160, sonle 'hygrusajflc~iiubstanc~- (LICI or OiCl:' mis tiglitly
covered ritb a pbto cf i~iaterialrnntg. ~ue 1k res'(wrnpresqed
tra;bite, porcelain, 4;10.) and placed in the rnoist ;dr. Tl;e
Txrmwre inside tbt ctiainbLr decreased or,ing to the ub-
TptionoIvmttrmt;bvjLndso:nie inoist gasdifluwl through
e mmbraut. -16:i lWtial pmsure tlifiu-tairt oi dry ps
Inside Lod outside: tle tbftmber vms a function of the water
Vapor pressure in Vie rrolsi ga-t, and the caeft. of proportion.
alit), between tho Otil iand partial prenures at the two sides
of Olt membrant iitxudtd on the diffusiw~ coeff, and tile
VISO)sity of the Ps'nihit. Th,- app. built is fully illustrated
and demribed. ?be; itime betwftn I-ICI AIMuses (40 g.)
dt&Iind$ on couditbaiind may be- somal vierks at a lernp.
'I is llinth~pszuayiutro- A
auc!j errom. - The app,vras u*cd for maishike.rft-filation in
blast.,furaim air. twd vras found to offer ndvantales over
W. M. Sternbem-
7-&
Y-11

AUTHORt DERYAGIN,B.V., KLRASEV,V.V., ZAKHAVAYEVA,N.N., PA - 3563
- fiff A-R-8 V -17 -. F - -
TITLE:' Mechanism oi Boundary Lubrication and Boundary Lubrication Layer
Properties. (Mekhanizra granichnoy smazki i avoyetva granichnogo
smazoohnogo sloys, Hmssisn)
PERIdDICIL: Zhurnal Tekhn. Fiz., 1957, Vol 27, Vr 5, PP 1076 - loa6 (U.S.S.R.)
ABSTRACT: There are two different opinions concerning this problem; that of
close and that of remote effect. T he former is expressed by Bowden
(T he FriOtion and Lubrication of Solids, Oxford, II. ed., 1954),
the latter by the authors of this paper. The latter opinion is
based on numerous theoretical and experimental investigations
carried out according to entirely new methods. It says that the
influence exercised by the solid wall is continued into the interior
of the liquid which in the depth of many molecular layers contains
polar molecules, and in this way causes a change of the properties
of these layers compared to those of the space phase. This exercise&
a considerable influence on the boundary lubrication. A short sur-
vey of all those facts in given on the basis of which the difference
of opinion mentioned above must be decided in favor of the opinion
expressed by the authors. Direct measurements of the viscosity in
boundary layers of organic liquids, oils, and polymers according
Card 1/2 to the latest and greatly improved methods showed clearly that in

PA - 3563
Mechaniam of Boundary Lubrication and Boundary Lubrication
Layer Properties.
ASSOCIATION:
PRESENTED BYt
SUBMITTED:
AVAILABLEt
Card 2/2
boundary layers with a thickness of up to 0,11- viscosity has a
value that differs greatly from the space value. These results
show that Bowden's opinion is wrong. In order to explain the static
friction of solid surfaces separated by a boundary-polymolecular
layer, the equation for static friction F is written down according
to the two-term friction law.
F = 1,K (N + Sp0) a ~t N + S (9 -rpo)
is the "true" friction coefficient, N - stress, S the surface
of the true and.molecular contact, and p0 - the constant of the
pressure difference vhich measures the molecular force of attraction
acting upon the surface unit of the true and molecular contact.
Bowden explains frictional phenomena only with the help of the
second term of this formula, and this is his mistake, for it in
just the second term that explains the existence of static friction
and confirms Amanzon's law of friction. (~Vith 12 illustrations and
14 Slavic references)
Institute for Physical Chemistry, Moscow
1-11-1956
Library of Congress

AUTHORs
TITLE:
KMVA,L.I., DERTAGINB.V.
Cyl~er RKE;I-Mig
Theory
57-6-17/36
PERIODICAL:
of
on a Surface covered with a Plastic
Lubricant. (Teoriya kadheniya tailindra po overicnnosti,
pokrjtoy sloyam plastiobnoy anazki, RusaiLT
Zhurnal Takhn.Fiz. 1957, Vol 27, Nr 6, pp 1261-1271 (U.S.S.R.)
ABSTRACT: Foz=lae are derived for the determination of the pressure of the
lubricant layer, the carrying strength of the lubrication layer
and the pewer which is used for overcoming friction in the
lubricating layer, i.e. for the case of a oonstant exterior
shearing strain. A for-A& in determined for the pressure ain-
tribution in the lubr-loating layer for that case in which the
shearing strain depends exponentially on pressure. It is shovin
that in this cue there exists an utmost mini-- thickness of
the lubricating layer in the gap between the cylinder and the
rolling surface. (With 10 Illustrations and I Slavic Re:Perence).
ASSMUTICK- Not given
PRESEM BY-
SUBMITTED: 11.1-1957
AVAIWLE: Library of Congress
Gard 1/1

AUTHORS Peryagin, B.T.p Bakanov, S.P. 57-9-18/40
TITLE The Theory of Gas Flow in a Porous Body in the Vicinity
of Knudson's Region.
(Teoriya, teohenlya gass' v poristom tele v okolo-
knudeenovskoy oblasti.)
PERIODICAL Zhurnal Tokhn. Pis., 1957, Vol.27, Nr 9, pp.2056-2070
(USSR)
ABSTRACT A highly porous body can, in the case of the lack of any
porous structure and any regularity with respect to the
arrangement of particles, be looked upon as a system of
chaotically distributed spheres which are rigidly fixed
in space. For a gas flow through such a system the
method for the determination of the coefficient of the
reciprocal diffusion of two gases, which was developed
by S.Chapman and I.G. Cowling (The Mathematical Theory
of Non-Uniform Gases, Cambridge, 1939) can be applied,
in which case the spherical system is considered to be
a gas with molecules of infinitely large mass. A formula
for the gas filtration coefficient through the porous
body is derived. It is shown that, with anyapproximation
with the exception of that to zero, the filtration oo-
CARD 1/3 efficient decreases with rising presskre. In consideration

57-9-18/40
The Theory of Gas Flow in a Porous Body in the Vicinity of Knudsen 'a
Region.
of the fact that the filtration coefficient at high
pressure increases with rising pressure according to
Poiseuille's law, a curve with a minimum is obtained.
In this way it appears possible to explain the minimum
in the gas-oonsumption-pressure ourve in the case of
the experiments carried out by knudsen and W.Gaede (Ann.
d0s.p 411 289s 1913) (MAnudeenj knn.d.Phys. 28, 75,
1909 The curves for the filtration coefficients obtained
here differ only little within the domain concerned from
those obtained on the basis of a much less accurate but
physically olearer considerations. The results obtained
here are applicable in the case of the condition,
AL 0 I and then a velocity distribution de-
velops in the pores. According to the general opinion the molecular
flow with increasing gas pressure p and consequently also with
increasing c