SCIENTIFIC ABSTRACT LEDOKHOVICH, A.A. - LEDR, J.

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December 31, 1967
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SCIENTIFIC ABSTRACT
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La-boKii ov, c-N, A- ~) - PHASE I BOOK EXPLOITATION SOV/43176 Zaytsev, Vasilly Aleksandrovich and Aleksey Aleksandrovich Ledokhovich Pribory i meEbdika issledovanlya oblakov s samoleta (instru- ments and Methods for Investigating Clouds From Aircraft). laningrad, Oldrometeoizdat, 1960. 175 P. 3,000 copies printed. Reap. Ed.: N. P. Fateyev; Ed.: V. S. Protopopov; Tech. Ed.-~ N. V. Volkov. PURPOSRE-. This book is intended for meteorologists and aero- logists. COVFakGEg The book describes the instruments used in air- craft sound-Lng to measure air temperature and humidity, temperature pulsations in and outside of clouds, the water content of cloads, the size of cloud droplets, and visi- bility. The methods and techniques of conducting meas- urements are explained. Examples of individual and com- plex measurements are given. G. M. Zabrodskiy wrote Ch. 7 In whic.~h he describes an instrument designed by himself Ca-rd-l-/6- Instrixnents and MethodB (Cont.) SOV/4376 to mc:~a3ure ~,,loud transparency. The book contains 83 di- agrams and,21 tables. There are 99 references: 92 Soviet, 5 English, and 2 German. TABLE OF CONTENTS Lntrodu,3 tion 3 Ch. I. Measuring the Temperature, Humidity and Pressure of KIr With Aircraft Meteorograph SM-43 7 Temperature measurement 9 Humildity measurement 11 Result"s of comparative measurements made with a meteo- rograph and a thermohygrometer 14 Ch. Il. Measuring the Air Temperature Inside and Outside of 0 louds From an Ainraft 18 Des-:~ription of the design of a shielded aircraft ther- momet,~-2 a-nd the 3tud-.V of its operational processes 20 C azd-~/-6- ZABRODSKIY, G.M.; ZAYTSEV, V.A.;-J"KROVICH, A.A.; TITOV, N.A. Sounding at atmosphere from a TU-104 airplane. Trudy GGO no.104: 53-67 160. (MIRA 13:101 (Meteorological instruments) (Aeronautics in meteorology) (Cloud physics) 5/1 6y62/000/009/078/120 D228 D3 07 AUTHORS: Zaytsev, V. A. arid .~edokhovicjL,_A__A, TITLE: Aircraft flight conditions near thick cumuli and cumu- lo-nimbi PERIODICAL: Referativnyy zhurnal, Geofizika, no. 9, 1962, 25, ab- stract 9B148 (In-collection: Issled. oblakov, osadkov i grozovogo elektricliestva, M., AN SSSR, 1961, 140-146) TEXT: The fact that around developing Cu cong there is a warm air envelope, from a few score to several hundred meters thick with a temperature contrast of 0.3 - 30 in comparison urith the mean air temperature outside the cloud at the same height,. was discovered by means of an aircraft shielded thermometer and a temperature palsa- tion meter during T\1-40q (TU-104)' aircraft flights near Sverdlovsk (on August 10, 1958). The warm air envelope has a thickness of 50 - '200 m and a temperature contrast of 0.3 - 0.50 at the cloud's base4, in its middle parts (at an altitude of 2840 m) these quantities equal. 100 - 700 m and 0.5 - 30 respectively. Above the cloud this Card 112 S/16 62/ooo/009/078/120 Aircraft flight co.nditions D22ayD307 600 m vertically and for shell is traceable to a height of 400 e upwards directed 1500 - 2000 m horizontally. In the cloud there ar downwards accelerations wherever the air temperature is reduced and directed ones wherever it is raised. On August 19, 1958, during a flight on the lqloscow-Sverdlovsk route above Cb anvils, whose upper edge waa located at a height of 10,500 - 10,600 m, the air temuera- ture, at a height of 11,000 M, over the central parts of Cb exceeded the mean temperature of the surrounding air at the same level by 3.3 -4,90. Above the anvils, especially at their edgest there were also., places where the temperature was 1 - 20 lower than the average tem- erature at the flight level. The overloads did not exceed 0.3 - p ils. The horizontal temperature gra- 0.4 g when flying over the anv dient raches 1o5 - 2.00/km above the summits of Cu cong and Cb. It is supposed that near the upper boundary of Cb, above their central part, the air temperature may be 8 - 100 higher in comparison with the surrounding air's temperature at the same height; and that dqs- cending air movements caused by the break up of the summits Of cu reach 20 - ~0 m/sec. Diagrams are given for the warm air congg may 8 disposition around ou cong,and above Cb; 3 references, Pnveloue' ZMSEVy V.A.; LEDOKHOVICHI A.A. Thermostatic testing unit. Priborostroenie no-3:21-22 Mr 161. (I'MRA i'+:3) (Thermometers-Testing) 3 0 0 0"1 S i /I 0c) 00 , /c.0 D039/D113 AUTHORSz Zaytsev., V. A., and Ledokhovich, A. A. TITLE-. The measurement of the vertical comuonents of wind velocities from an aircraft SOURCE~ Leningrad. "Xlavn--ya Oeofizicheskaya observatoriya. Trudy, no. 106, lc,051. Voprosy fiz-*Lki atincsfery, 62-68. 1 - T:EXT: A new device for measurin.- vertical -~,ird current velocities is des- cribed and the results are given of an investigation of the horizontal and vertical distribution of these currents. The investigations were conducted juring test flights over th.- Ladoga Lake area in 10,060. The basic parts oz' the ~~131J(IVP) vertical wind currert meter, which was developed by 'he authors in 1,060, ai-e an air pre-sure receiver (FIg. 1), _n manometric -a'a unit with a totentiometer and an o~ctical recording ins trument. T'--.-- oper- .~ 1. -r- wind .-ting principle of the device consists in measuring the velocity c- a current moving doeinwards or upwards in relall-ion to the aircraft. For Meas- urements, the air pressure receiver has to be mounted on the aircraft's nose,so that cne static chamber is turned upwards and the other one down- Card 1/0' 30001 S/5 3 1/6 1/000/!C~S/00 7 Ar, I DOj~/D!13 The measurement of the vertical components,... wards. The loni-itudinal axis should be parallel to that of the al.rcraft, The IVP me~,er can measure the vertical ,,;ind velocit,-,., component f Vo m a I 11:11 ed space. It -ras tested on an 1111-2 (LI-2) aircraft durinL- three :jo-paralte flights made over the above-mentioned reE-~ion on June 7, 8~ 10, 1960. The data unit was placed right next to the receiver and the le-noth of "he air ducts did not exceed 1 m. The inertia of 'he whole system the recording instrumentwas *tO.2 see, and the sensitivity corres-~~onded to I M/sec of -uhe vertical current velocity. The tests aiso included the cording of pressure at flight level, air temperature, temperature puisa lions and the aircraft overloads. All data ~;;ere recorded on a rhototaze. The IVP meter was tested in 'he following wayi 'the aircraft carried out, level f-ligh" for 15-16 min at altitudes of 50, 100, 200 and 500 m frorn the leve- of -he base surface, constant air speed and altitude being maintain- ed. The flight took place over only one area. the course beinE perpend .-,c-. ular to the shoreline, Over each horizontal plane, the aircraft covered 25 km over dry land and 25 km over v;ater- On Ju-.-.e 8, 19060, the test -,-,as C ar d 2.A, 30001 S/5: 3 1/06 1/000/1,06/001/00 D039/D113 The measurement of the vertical components... conducted from 10.00 to 14-00 hrs xhen a northerly wind with a velocity ~f ~ m/oer,, Prevailed, The total amount of cur-,luli vilhich formed a" the be-- ginning of the test.did not exceed 5 - 6 points over dry land; over the lake only patches of thin fog at up to 50 m altitude were ob3erved, Durin.., atmospheric sounding,the vertical currents were mainly observed over dry land up to 650 - 900 m altitude in the morning and up to l.:200 m. during ,he day. Preliminary results of measuring the vertical currenrs over dr~, land and water on June 8, 1960, showied that the most intense gustiness o :;,2 !jrred over dry land and over a 50-m layer of E;rourd air110-15 kin from the shore line. There, the maximum vertical gusts reached 11 m/sec. Towards the lake,the-,r intensity decreased and reached only 5 m/sec along a 5-km wide band. The vertical air currents were less intense over the 50-m strip than over dry land and amounted To lm/sec. Vertical currents over the lake were observed only ur, to an altitude of 500 m- On June 10, 1960, "he mind, d4 rection and velocity had changedj the wind force was up zo 12 m/sec. and, The wLn.d di-rection -,.as from dry 'Land towards the lake. During test flignts, Cal-d V6 31 7 0/10-", GO-- Ir"-_ D039//D!13 The measurement -)f the vertical components ... a considerable turbulence aas observed up to 1,600 m, both over the la.-~e aad dry land. Test results showed that the vertical currents moSr ,-ntense in the 50-m layer of ground air,-,-.-here separate g-usts reac~,ed 14 "M/Isec. The vertical current velocity decreased with altitu,---e and nearness t,c the water surface. Over the lake, it. -,,;as to-wer than over dry lanf and. decreased ,,:itr, increasin-E distance from +he shore an(I increasing -iift hei.-'nr. The number of vertical air currents witn a velo-ity of from. 3 M/sec on.decreased w-,Oi altitude and deDended on the wind velocIty and the lba se surface. Thus, on June 8, it averarred 1.5 per 1 km of the route in the 50-M -,bound layer, and at 500 m it was 0.13 per 1 km of the route. On -T-jne 0. the amount of vertical air currents was 7 and 1.5 per I km of the ro-'j.te, respec-~ively at the same levels, Tests showed that the IVP meter operated completely satisfactorily. The readinUs of the device do no,; depend on the air speed of the aircraft. Combined with other ins"ruments. .f, iriay a c3ear oicture of the atmospheric turbulence in the groun.d L,-..ypr c-,.'L air. Card 4/6 30001 S/53 611000110610011001 D039YD113 Themeasurement of the vertical components... Abstracters' note: The data of the test conducted on June 7, 19060, are not givew. There are 2 figures, 2 tables and 4 Soviet-bloc references. Card 5/6 30001 5/53 61/000/106/001/001 D039YD113 The measurement of the vertical components... Fig. li Air pressure receiver of the IVP vertical air current metw- Legendt 1 - tube; 2 - nozzle; 3 and 4 - static gaps; 5 - bridge; 6 ~rld 7 f ace plugs; 8 and 9 - connecting pipes; 10 - marrmetric box; 11 plastic airtight body; 12 potentiometer .2 III= -010-- K 34extqPUYeCx K CXAZY'd ............. Card 6/6 VASILICHENKO, I.V.; LADOKHOVICH, A.A. Some results of sounding from an airplane in the Golodnaya Stappe. Trudy GGO no.135355-59 162. (MIfU 15:8) (Golodnaya Steppe-Atmospheric temperature) I ZAYTSEV, V.A.; 19DOMOVICH, A.A. Recording the water content of clouds. Trudy AMIII 239sl2;,2133 162. (NIRA 16:8) (Clouds) (Aeronautics in meteorology) ACCESSION NR; AT4030533 S/0000/63/000/000/0106/0114 AUTHOR: Zabrodskiy, G. H.; Zayteev, V. A.; :4g4qkhovich,..A1.1 A. TITLE: Measuring temperature and vertical components of wind velocity from aircraft SOURCE: Nauchnaya konforentaiya po aviatuiennoy metoorologii. Moscow, 1960. Materialy*. Moscow, Gidrometeoizdat, 1963, 106-114 TOPIC TAGS: temperature measurement, wind velocity, humidity, air pressure, water content, visibility, condensation nucleus, atmospheric electricity, TU-104 aircraft, IL-2 aircraft ABSTRACT: This paper is one of 13 previously unpublished reports of the 40 papers given at the Nauchnaya konferentsiya po voprosam aviatsionnoy meteorologii (scien- tific conference on problems of aviation meteorology) that was held in June and July of 1960 in Moscow at the Glavnoye upravleniye gidrometeorologicheskoy sluzhby* SSSR. In this paper, the authors present results from measuring the temperature, humidity and air pressure, temperature pulsation, water content and visibility in clouds, .dimensions of cloud particles, condensation nuclei, the intensity of the atmospheric elect7. ical field and the like from aircraft. In addition to these parameters, the air velocity-of the aircraft, flight altitude, aircraft loads, and other values were Cord 1/2 ACCESSION NR: AT4030533 also determined with the aid of standard equipment. The results are presented in tables and graphs. Schematics of the electrical thermometer and the vertical* measurement device are presented. Teets on specific instruments were carried out in a TU-104 and 11-2. Orig.-arte has: 2 tables and 4 figures. -ASSOCIATION: none SUBMITTED: 1SPeb63 -DATE ACQ: 17Apr64 ENCL: 00 CODE: AS, SD NO REP SOV: 003 -OTHER: 001 Card 2/2 LEDOKHOVICH, A.A. ElectrIc meteorograph operated on a helteopter. Trudy GGO no.140: 71-78 163. (faRA 16:12) ZAYTSEV, V.A.; IEDOKHOVICH, A.A. Measurement of the atmospheric pressure using an electric hypsothermometer. Trudy AANII 23~::139-143 162. (MIRA 16:8) (Atmospheric pressure-Measurement) ACCESSION NR: AT4043158 Sj'2531/64/000/154/0068/0664 -AUTHOR: Zaytsev, V.A., I~dokhovich, A. A* TITLE: Vertical currents in the boundary layer of air SOURCE: Leningrad. Glavnaya geofizicheakaya observatoriya. Trudy*.1 no. 164, Voprosy* hziki atmosfery* (Problems in atmospheric physics), 58-64 TOPIC TAGS: meteorology, atmospheric boundary layer, atmospheric physics, atmospheric turbulence, air current, wind velocity profile ABSTRACT: This article discusses the results of measurement of the vertical components of wind velocity from an airplane. . Data are presented on the change in velocity and the horizontal extent of vertical currents with height. In 196.0, the Glavuaya-geofizicheskaya observatoriya (Main Geophysical Observatory) Investigated the influence of the water surface of Lake Ladoga on the coastal regions. The ineteorological apparatus carried aboard an LI-2 aircraft included a vertical current meter for registering the velocity of the vertical currents on an owifflogram during horizontal flight of the aircraft with a mean air speed of 220 km/hour. The plane flow Card 1/4 ACCESSION NR: AT4043158 for about 15 minutes at each of the levels 50, 100, 200, 500 and 1,000 m above the underlying Surface. Each flight was 25 km over water and 25 km overland. Two flights duringdifferent synoptic situations are described in detail: the wind regime and vertical temperature gradient were different (see Fig. I of the Encloquro). On June 8 the vertical air currents developed as a result of thermal convection, whereas on June 10 the vertical currents were t~he result of dynamic turbulence and convection. An analysis of these cases leads to the conclusion that ascending air currents in the surface I[Lyer -of the atmosphere have a greater horizontal extent L than the descending currents. The velocity of the vertical currents is dependent on the distribution of the vertical temperature gradient and wind velocity at the earth's surface. In the case of superadiabatic gradients and a small wind velocity at the surface, the ascending currents possess a greater vertical velocity than the descending currents. When Y 10/100 m and 'the wind velocity at the surface is considerable, the descending air.currents haveagreater vertical velocity than the ascending currents. There is a basis for assuming that, in the lower 100-m surface layer, regardless of weather conditions ind the local relief, the vertical currents' develop with a mean horizontal extent of about 50-60 m or as a primary series of eddies with. a diameter of 100-120 m. In the atmospheric layer from 100 to 500 m there to a secondary Card 2/4 CCJESSION NR: AT4043158 eries of eddies with a diameter of 120w-180 m. or vertical currents with a mean horizontal tentof60-80m.. The secondary layer of eddies 'apparently -can be carried by the general. 70rjzontal wind flow for considerable distances from the place of formation. Ascending cur- ~ Ixents move an' iamost identical quantity of air over both the land. and the water. At heights of ibO and 100 in in the surface lay'pr, and at greater heights In mountainous regions, Wd'veroait~ of the vertical currents Is close to the wind velocity at the earth's surface. Orig. art. has: 3 figures and 2 tables. [ASS061ATION. Glavnaya geofizicheskaya obsdrvatorlya (Main Geophysical Observatory) SUBAUTTED: .00 ENCL: 01 SUB WDE: ES NO REF SOV. 006 OTHER: o00 Card 3/4' -iACCESSIONNR: AT4043158 ENCLOSURE: OIT HAw 6' :1000. 'Of/ 12 r 2 1 X4 1600 At 600 / ~N~Z' 400. 0 1 2 '3 0 2 50' 60 70Lm 10 60 70 1000 - 900,0,6 /000 2Z0 15 16 14 ~1210 d' ' 6 4 C2 2 2C PI 16 A, ;2 Fig. 1. Vertical distribution of pressure, temperature, velocity and horizontal extent of vertical cuivents on June 8 (a) and 10 (b), 1960. 1, 8 --mean values of velocity of descending currents 0~/sco);2, I -- 2nean volocitics of aacanding currants (rn/vaa) j 3., 11 --moanvalueaof horizon- tdl extent of descending currents (m); 4, 12 -- mean values of horizontal extent of ascending cur- :Card 4/4 rents (m); 5, 10 -- airpressure (mb7,; 6, 9 air temperature (Oegrees). ~,-, L'107.18-65 !-ACCESS 1OWNRi A-14045159:: T and I n z'o.n,'4s of - j ist , rea'Ms* he sensitivity.of the fluctuation meter, flight St speed of -the,aircraft, rate of 6scilibgraph paper movement and analysis method made it'P'04sib ezto obtairi.-t~~r'at.ure,:fluctuation vaNds.with a,minf=m amplitude, of oA _and,a:mInjmu'm half-wave of not,lelss than 20 m., Fluctuations: are divided .-.groups: s 40-300 - 300-31000 m; into three mali-scale ~(waveleagtii M; medium-scald and large-sca_le.-w~> 1,00 M. Fig. I of the Enclosure shows some of the most typi- cal records of temperature fluctuations for different atmospheric conditions, such cases are discussed InAhe text. The figure shows that the atmosphere ex- perienc,es.ii-great vlarlety.-of temperature fluctuations, each of which is the re- sul, of deflnlte;~atmospherlc processes. Among the responsible factors, discussed In the article are: -~nonuhfform heating of the underlying surface, a difference In densityand temperature distribution (as In Inversions), and heating or cooling -of al r~ as.. a. result--of condensati'an and subi Imation of water vapor and the evapara- tion~of:'con'de-nsation,prl~4u-~cts- in ph re,; I t , I s, shimm , that the character the atmoS e of the record. of temperature -f luctuations an an oscl Ilogram, makes I:t possible to determine the wavelength and amplitude of temperature fluctuations and the harl- tem Iera u_re,qradIent_-In*.-dIfferent parts of the flight. The follow[ t ng tables are rePresentaPi'vO of the mater.1al discussed Inthe text. Tablo I - mean, erature fluctuations In the near-surface air maximum and-minimum-values of temp. no Table 2 - mean, mAxImum.-and minlamm values of temperai- layer In the warm~s -ea-so 0 - ktu-re Muctuations'la- summer radiation Inversions In Central Asia* Table 3 2/5 7 1 ACCESSIOW Continuation of Fig.- I.,:_ ENCLOSURE: 02 Fig. I.. Tempera- A 7 ture fluctuations recorded under Ar .!.various atmospher 4 ' Ic conditions. In near-surface, .#A layer; 2-4 - in inversions with A-, Ifferent para- d Ofe ift meters; 5 - at upper boundary of A Inversion; 6 In -inversion; -over r- V Cb Inc 7- % Ift fk 5/5 ZAYTSEV., V.A.; LEDOKHOVI.CH,.~.A. ...... - .- , . - Measuring humuldity in low temperatures. Probl. Arkt. i fintarkt. no.19:15-21 165. (MIRA 180) i445~6 ENT(I)/FCC GW ACC NN AT6009617 SOURCE CODE:. UR/2561/65/000/019/0015/0021 AUTHORt tsev, V, A.; Ledokhovichl A. A ORG: none 7 TITLE: The problem of atm measurement at low temperatures .SOURCE: Leningrad. Arkticheskiy i antarktichesk y nauchlo-issledovatellskiy institut. Problemy Arktiki i Antarktiki, no. 113, 1965, 15-21 TOPIC TAGS: atmospheric humidity, temperature measurement, meteorologic instrument ABSTRACT: A simplified method of measuring atmospheric hmnidity at temperatures below 00 with a condensation hygrometer Is described. A small condensation thermohygro- meter was used and the condensation temperatures were measured by small temperature steps (0.101sec) in cooling the mirror. The measurements show that there is no preci- pitation of condensates on the mirror when there is vapor saturation over the surface of ice and that the precipitation of a condensate on the mirror always occurs at 100% water vapor humidity over water at rising or falling temperatures from -70 to 00 and 00 to 700, respectively. The data served as a basis for designing a portable, re- mote controlled condensation thermohygrometer (PTCTG) consisting of three parts: a temperature and humidity recorder, a measuring device, and an ac rectifier. The di- UDC: 551.508.71 L-Card 1/2 USSR / Plnnt Physiology. Photosynthosis. .'.bs Jour : Rof Zhur - Biol., No 1, 1959, Ho 1265 ,,uthor : Skripohinskiy,'V. V.; Imbs, G.; Kosiltova, P. G,, and Lodokhovich M. M- Inst o r7on Titlo Carotin and Chlorophyll Contont in tho Loavos of Somo Foddor and Coroal Grass Plants of Stavropol'yo DurinG Various Stagos of Dovelopmoitb. Orig Pub Matorialy po Izuoh. Stavropollsk. KrD,)-,., Fasciolo 8, 61-72, 1956. t Studios of tho dymmics of chlorophyll and caro'Cin in tho loavos of crostod mhoat grass, arhizomatous whoat grass, armloss bromograss, dorr fgass, moadow timothy, tall oat- grass, bulbous barluy, cultivatod and wild ryo, and vrintor ryo and whoat, undor conditions of Stavropol's . y Yrrv ki y, Tho incroaso or docroaso In tho amount of groon pignonts Card 1 A LEDOUX) L. and others. Changes in content and rietanolism of purines ~n nucleic acids during the aging process of an experimental tumor. P. 37 ,'C,TA BIOCqIl,2.Ck POLONICA. (Polska Akaderda Nauk. Komitet Biochirdczny) Warsza;ja. Vol. 6, no. 1, 1959 Polend/ Ylonthly List of East European Accessions index (= ), LC, VOL. b, no. 6, June 1959 Uncl. Ledoux, M. Lightning arrester combined with a spark gap with are displacement for overvoltage protection of medium-voltage protection of medium-voltage systems. Tr. from the French. p. 212. Vol. 43, no. 4, Apr. 1954. ELEKTROTECHNICKY OBZOR SO: Monthly List of East European Accession, (EFUU), LC. Val. 4, No. 9, Sept. 1955, Uncl- - POPOV. A., LFMVA, N., atarshiy skonomist Brigades and shock workers of cor-m-nist labor at enterprises and grain procurement stations of the Hinistr7 of Cereal Products of the R.S.F.S.R. Muk.-elev.prom. 26 no:2:3-5 F 160. (MIRA 13.6) 1. Ministerstvo khleboproduktov RSFM. 2. Zamestitall nachallnika planovo-ekonomichaskogo i finansovo&o upravlerLiya Ministerstva khlaboproduktov RSFSR (for Fopov). (Grain elevators) .. "'. -T- " 1. 1; , . I , I 36462. L, -. 1. K Vonrosu 0 Flik'em-Lemyki-I Herato-Kon" Yimktivitakh U Dct,~~y --nne-) Vo7rasta. 'A Vonrosy Pe(liatrii 1 Okhrany M, terinstva I Detstva, 1949, 'J'Yp. 5, E. V-5(-. SO: Letopis' Zhurp,-al.Iny*,Ii Statey, Vol. 4-',', "o-si-7ri, 1949 LM)OVNIK, M.A. -4; Tuberculous lesions of the lungs and intrathoracic 1 M h nodes in children affected with osteoarticular tuberculosis. Pediatriia no.3:81 MY-Je '55. (MLRA 8;10) (BONM-TUBFIRCULOSIS) (LUNGS-TUBNRCULOSIS) KOTLYAROVA9 R.I.; LEDOVSKAU, A.P. Studying the bactericidal affect of acetic acid on the plague bacillus and Vibrio c ; authorts abstract. Zhur. mikrobiol. epid. i i-m. 31 no. 10:102 0 260. (MIRA 13:12) 1. Iz nauchno-issledovatel'skogo protivochumnogo instituta kavkaza i Zakavkazlya Ministerstva zdravookhraneniya SSSR. (VIBRIO COMMA) (ACETIC ACID) (PASTEURELLA PEST;S) KOTLYAROVA, R.I.; LEDOVSKLYA, A.P. Increasing the virulence~of Vibro cholerae by means of passage in amikals with lowered defense reactions. Zhar.mikrob_jol.ePid.i Immun. 32 no.2t'80-83-F -161. TMIPA 1-1,: 6) 1. 1z Na-achno-issledovatellskogo protivochumnogo instituta Kavkaza i Zakavkazlya Ministerstva zdravQokhraneriiya SSSR. (TaBRIO COMA) ACC NRt AP6036833 SOURCE CODE:, UR/0020/66/171 AUTLHORSt Zalbreyko, P. P.; Ledovskaya, I. B. OiG: Voronezh State University (Voronezhskiy gosudarstyennyy univeraitet) TITLE: On the N. N. Bogolyubov-N. 14. Krylov's leading approximations method of averaging SOURCE: AN SSSR. Doklady, v. 171, no. 2, 1966, 262-265 TOPIC TAGS: approximation method, ordinary differential equation, asymptotic method 13S' I IRACT: The approximate averaging method of Bogolyubov-Krylov is gencralizad to the; case of leading asymptotic approximation. Three cases are considered. The first is to determine the order of proximity for the solutions x(t) and R(t) of the pair of equations -dz I'dt ye (t, X) + p V*~-4' XI(j, X)+... + ehXh(t, X) + 1 0) x -1-eX,(t,x)+.... ,,X,(I,x)-, for 6 > 0, with initial conditions x(O) i(0) xO. Thia is shown by means of .theorem which leads to the limiting expression sup max -k ev (A. T), x(l) C-ZWlk 0, T) 0