RESEARCH RESULTS SERVICE Summaries of ... - ACS Publications

RESEARCH RESULTS . . . . . . immediately auailable All papers listed are being considered for publication in I&EC or one of the I&EC Quarterlies. They are available in manuscript form, with the requirement that any reference to their content in a publication must have the author's prior approval. Orders are processed within 24 hours of receipt, with shipment by first class mail. Prices for subscribers and nonsubscribers are listed with each manuscript. Please include payment with order.

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Flow of Ellis Fluid in Screw Pump Channels. Velocity profiles and viscosity profiles for a carboxy methyl cellulose solution with known Ellis constants have been determined. Theoretical and experimental values of discharge and dissipated power for the pump with CMS solution are compared.

M. V . Joshi and H . S. Rao, Unizersity of Bombay, Bombay, India M s . 68-237

15 pages ( 7 Jgures, I table)

Subscribers 22.00 Nonsubscribers $4.00

NONSUBSCRIBER

Redox Iniliation with Percarbonafe Esters. Describes redox couples for initiating emulsion polymerizations. They contain diisopropyl peroxydicarbonate or tert-butylperoxy isopropyl carbonate plus water-soluble reducing agents. Rapid polymerizations of styrene and vinylidene chloride were achieved at 5 to 30' C with these redox systems.

J . C . Crano, E. K . Fleming, and W. A . Keim, P P G Industries

MS.68-376 14pages ( 6 tables)

Dynamic Response of laminar Flow in a Heoted Tube.

An approximate transfer function relates outlet mixing cup temperature to wall temperature. T h e improved transfer function is much more accurate than the more commonly used function, without added complexity.

Subscribers S2.00 ~\~onsubrcribers$4.00

The Eleclrochemical Oxidation of l e a d Acetate in Organic Solvenfs. Lead acetate electrolysis in various organic solvents results in a uniform light-absorbing coating a t the anode, rich in PbOs, and soluble in the presence of reducing agents. Sim-

Donald W.Costley and Robert G . W a t t s , Tulane Unibersity

ilarity in kinetic behavior of hydroquinone and carbitol suggests similar mechanisms.

MS. 68-238

Charles W. Lewis and Patricia C. Edge, P P G Industries

26 pages (6 figures)

Subscribers 53.00 Nonsubscribers 86.00

M s . 68-320 15pages ( j j g u r e s , I table)

Model describes the mechanism of mass transport within single oscillating drops moving in a liquid-liquid extraction system. Effect of oscillatory mixing in the drop is expressed by a series of periodic instantaneous perfect mixings.

Subscribers $2.00 2\ronsuDscribers S4.00

Mass Transfer from an Oscillating Single Droplef.

William B . Ellis and Robert B. Beckmann, Lrniuersity of Maryland

Ms. 6 8 - 2 6 8 37 pages ( I I Jgures)


A Confribution l o the Synthesis and Characterization of Cab cium Orfhoplumbate. Wholly hydrated lime was found to be

the most efficient calcium component source, with 700' to 750' C the most convenient temperature range. Previous data in the literature are partially rejected, but generally confirmed and in some cases accepted.

Jernej Jernejcic, Stefan Skiedar, and Joze Sencar, Institute of Chemistry "Boris Kidric," Ljubijana, Yugoslauia IMS. 68-322

Transient Response of a Packed Column to Changes in liquid and Gas Flow Rate, For small step function disturbances, re-

sponses to positive and negative step changes are symmetrical; for larger disturbances, asymmetrical. Time delays and time constants are correlated in terms of theoretical mean response time.

Chaim Gilath, Leonard M . Naphtali, and William Resnick, Israel Institute of Technology, HaiJa M s . 68-290 Subscribers $5.00 48 pages (8jigures, 2 tables)

Nonsubscribers 670.00

27 pages

Preparafion of Sodium Fluotantolofes from Organic Solutions.

Solutions of various sodium salts were added to MIBK extracts of tantalum. Yields of Na;TaF?.H?O and NaaTaF, were 50 to 70y0, based on the tantalum content of organic extract. Several recycle alternatives are suggested to minimize tantalum loss.

Robert E. Eberts, Xorton Company Ms. 68-323 8 pages ( I table)

A N e w Experimental Technique for Determining Dynamic Surface Tension and Surface Excess Values. Surface tension of

pure liquids and surfactant solutions can be measured directly from a n oscillating jet, using a coordinate cathetometer. Surface excess values are calculated using Gibbs adsorption isotherm and equilibrium data. Method is simple and quantitative.

J . A. Caskel' and W . B. Barlage, J r . , Ciemson University M s . 68-31 7 Subscribers 52.00 20pages (8figures, 7 table) 68


INDUSTRIAL A N D ENGINEERING CHEMISTRY

Subscribers 53.00 AVonsubscribers $6.00

Subscribers $1.00 Nonsubscribers $2.00

Invarianf Imbedding and Countercurrent Mulfisfage Operations. T h e concept of invariant imbedding is applied to staged

countercurrent separation processes, and finite difference equations solvable for outlet quantities are derived. A straightforward computational procedure is presented and illustrated in two examples.

Dauid M . Koenig, Worlhington, Ohio

I M S . 68-324 77Pages ( 2 tables)

Subscribers 52.00 ~Vonsubscribers94.00

Hydroisomerization of n-Paraffins over Fluorided Platinum Alumina Catalysts. Isomerization increased markedly when

name:

hydrogen pressure was reduced. A t 300 psig, a 5 % fluoride catalyst was more selective than either 10% or fluoride-free catalyst. Effects of alumina-type sulfur compounds, nitrogen compounds, and aromatic rings were measured.

B. A . Orkin, Mobil Research and Development Corporation M s . 68-325 26.4ages (7figures, 7 tables)


Fluidized Bed Drying of Sodium Sulfate Solutions. A more uniform particle size distribution was obtained in the dried product a t higher air flow rates and bed heights than a t lower. Bulk density increased with increase in feed concentration. A correlation between bulk density and operating variables is reported.

N . N . Bakhshi and C. Y . Chai, University of Saskatchewan, Canada M s . 68-326

22 pages (7Jgures, 2 tables)


I t is shown that these fluids exhibit heat-transfer coefficients that are reduced even more than their friction losses. An empirical correlation is suggested which correlates the data to an average deviation of 7.7%, with 73% of the data falling within this limit.

Turbulent Heat Transfer to Viscoelastic Fluids.

Gail T. Pruitt, Norman F . Whitsitt, and Horace R. Crawford, Research Division of T h e Western Company

MS.68-327 34pages (IJj’igures, 7 table)

Subscribers $4.00

SPRAYING SYSTEMS CO.


Mixed-Gas Adsorption and Vacuum Desorption of Carbon Dioxide on Molecular Sieve. II. Rigorous mathematical analy-

sis and specific experimental data are combined to design a regenerative COz removal system for a manned space mission. Basic equations in the analysis and criteria used for design tradeoff are given. Representative data and analytical predictions are compared.

Luino Dell’Osso, Jr., NASA Manned Spacecraft Center and Jack Winnick, T h e Garrett Corjoration Ms. 68-328 39 pages (17figures)


Optimization of Porous Catalyst Pellets, Raschig Ring Shape. Application to Methanol Syntheses. An important catalyst

mass economy can be achieved with a simultaneous increase in reaction rate, provided the pellet geometry is that of a Raschig ring of given size and density.

M . Trabucchi and R. E. Cunningham, University of Buenos Aires, Argenlina Ms. 68-330 75pages (7figures, 7 table)


Effect of Clay Cation Exchange on Foundry-Sand Characteristics. An illitic clay was modified to convert exchangeable

cations to relatively pure ion forms. Typical foundry sand mixtures containing the modified clays were tested and show clearly the improved strength and deformation characteristics of the ion-exchanged clay.

Thomas J . W a r d , Uniuersity of Texas

Ms. 6 8 - 3 3 2 7 2 j a g e s (4figures)


High-Temperature Chlorination of or-Methylstyrene. Selectivities of a-methylstyrene to 2-phenylallyl chloride of 90% a t 30y0 conversion were achieved, with high temperature and short reaction times, followed by immediate quenching of reaction product, the most important factors governing 2-phenylallyl chloride formation in high selectivities.

Karl E. Fuger and Donald L. DeVries, Sinclair Research, Inc. M s . 68-333 77pages ( 1 table, 8figures)


Next time you need a processing idea why not reach out your hand for CHEMICAL ENGINEERING CATALOG? It’s not only a fact-book, it’s an idea-book too, for process engineers, technicians and plant personnel. Anything you need t o know about equipment, materials of construction or specialized services is right there in “the book.” The 5-way index helps you sort out facts, put two and two together, and come up with fresh ideas. CEC puts you in bsusiness fast - the idea business. Use it for facts! Use it for ideas! Use it to pick the brains of 500 supplier companies! CHEMICAL ENGINEERING CATALOG

REl”OLD

PUBLISHING COf?P.

430 PARK AVENUE, NEW YORK, N.Y. 10022

VOL. 6 0

NO.

10

OCTOBER

1968

69

R E S E A R C H RESULTS Hydrolysis of 2-Phenylallyl Chloride. A study of major processing variables in batch and continuous hydrolysis of 2phenylallyl chloride with aqueous NaOH. Yields of 2-phenylallyl alcohol greater than 90% were obtained, but substantial isomerization to 2-phenylpropionaldehyde occurred if the aqueous phase became acidic.

Karl E. Fuger and Donald L. DeVries, Sanclair Research, Inc. M s . 68-334 Subscribers $2.00 7 2 pages ( Z j g u r e s , 2 tables)

Nonsubscra bers $4.00

Adsorption of Gases on Solids-The Role of Thermodynamics. Shows how methods of thermodynamics, properly used, can lighten the burden of the experimentalist and open the way to far more productive experimental study of mixed gas systems. Equations applicable to mixed gas adsorption are emphasized.

A Classical Approach to Bang-Bang Control of Linear Processes. Treats a general class of regulator problems with arbitrary initial conditions. Nonlinear equations yield switching times, minimum time, and switching boundaries, reducing time-optimal computations in solving equations for roots. Discusses advantages; gives examples of regulator and setpoint change problems.

Henry C. L i m , Purdue Uniwrsity Ms. 6 8 - 3 4 3

Subscribers 64.00

37 pages ( 4 j g u r e s )

Nonsubscribers $8.00

Information Theory and the Design of Experiments. A procedure for design of experiments used to estimate model parameters is based on information theory. Three experimental designs are calculated. Two relate to estimation of system dynamic response, and one relates to estimation of kinetic parameters.

I d E C Summer Symposium on Chemistry and Physics of InterfacesI I , H . C . Van Ness, Rensselaer Polytechnic Institute Ms. 68-335 Subscribers $4.00

R. P. King and Edward T. Woodburn, Universitj of iVatal, Durban, South Africa

37pages (7jigure, 7 tnble)

M S . 68-345


Subscribers $3.00

24pages ( 5 j g u r e s , 2 tables) Presents a method for determining number of catalyst regenerations to minimize total operating costs before catalyst replacement. Optimum number depends on two ratios: catalyst replacement to regeneration cost and permanent to apparent deactivation rate constants.


Optimal Catalyst Replacement Cycle.

J. B. Angela and hr. C. Nahas, Esso Research and Engineering CompanY Ms. 68-336 Subscribers $2.00 7 7 pages (2jigures)


Rheological Interpretation of Brabender Plasti-Corder (Extruder Head) Data. Describes a method for relating Brabender

Plasti-Corder extrusion data to fundamental rheological units of shear stress and shear rate. Correlation of results for high density polyethylene and polystyrene with Instron capillary rheometer data validate the theoretical approach.

M . G. Rogers, D o w Chemical of Canada, Ltd.

Ms. 68-338 76 pages (Sjigures, 1 table)


Predicted Limitations in Designing l u b e Mills of large Diameters. Based on the ball mill rate equation and economic

balances using plant data, the most efficient tube mill diameter is evaluated to point out the limitation in recent trends in designing larger mills.

Y . Nakajima, K. Tamura, and T . Tanaka, Hokkaido Uniuersity, Sapporo, Japan M s . 68-339 24 pages ( 9 jgures)


An Optimum Product Composition of a Combined ChemicalMechanical Process. An optimum target value of a final

product composition is analytically obtained for a combined process in which the intermediate product is fed continuously from the last stage of the chemical process to a subsequent mechanical process.

Shinjja Ochiai, Celanese Chemical Company

MS.68-341 7 5 pages (3Jgures)

Introduces a modified Ergun correlation which includes the wall effect as a parameter. Experimental data are presented which substantiate the modification of the Ergun relation.

Wall Effect in Packed Columns.

D . Mehta and M . C. Hawley, Michigan State Uniuersity

Ms. 68-346

are calculated for the “population balance” problems associated with (1) droplet coalescence in reactions in the dispersed phase of two liquid media and (2) coagulation of polydisperse aerosols in a shear field.

H. M . Hulburt and Tetsuo Akiyama, Northwestern Universify Ms. 68-349

Catalytic Hydrocracking. If. of Low Temperature Coal Tar.

ethylaminoethanol (the most effective amine tested) at 1 atm and 7 5 m m H g saturated C O Lpressure. Commercial applications and additional work are discussed.

A. L. Shrier and P. V . Danckwerts, University of Cambridge, England

70

Nonsubscribers $6.00 Mechanism of Hydrocracking

Hydrocracking of low temperature tar proceeds through a mechanism involving simultaneous and consecutive cracking, isomerization, and hydrogenation reactions, with the cracking reactions controlling the rate.

S. A. Qader and G. R. H i l l , Uniaersity of Utah

M s . 68-350 26 pages ( 7 3 j g u r e s , 3 tables)


An Experimental Study of the Ice Making Operation in the Inversion Desalination Freezing Process. Rate data show that

one to two thousand liters of fresh water per day can be obtained from each cubic foot of contactor, using reasonably sized equipment. Quality of the ice indicates that ice-washing presents no problem.

Shen-Yann Chiu, Liang-tseng Fan, and Richard G. Akins, Kansas State University 3 3 p a g e s ( l B j g u r e s , 7 table) Mass Transfer in Fuel Cells. 111.

MS.68-342

Subscribers $3.00

22 pages ( 3 j i ~ u r e s )

Subscribers $4.00 Nonsubscribers 88.00

Nonsu bscribers $4.00

Carbon Dioxide Absorption into Amine-Promoted Potash Solutions. Degrees of rate enhancement are presented for various amines at 1 atm saturated COz pressure, and for 2-

3 7 p n g e s (Gjgures, 5 tables)


Liouville Equations for Agglomeration and Dispersion Processes. Liouville equations and distribution function moments

M S . 68-351 Subscribers $2.00

Subscribers $7.00

10pages ( 3 j g u r e s )


INDUSTRIAL AND ENGINEERING CHEMISTRY

Anodic Transpor! Processes.

Presents a theoretical analysis of polarization mechanisms in a porous fuel cell anode, using a model consisting of a single pore coated by a thin film of electrolyte. Model gives satisfactory predictions. Ohmic losses are insignificant compared to activation polarization.

S. K . Sood, T . Schmidt, and D . T . Wasan, Illinois Institute of Technology Ms. 68-352 3 1 pages ( 1 3 j g u r e s )


Effect of Vibration on Friction Factor in Flows Ehrough Curved Pipes. Two empirical equations for estimation of friction factor

are presented. Ratio of friction factor of a curved pipe subjected to vibration to that of a stationary curved pipe is presented in graphic form.

Constantine G. Vyoyannis and Hsien-Wen Hsu, The University of Tennessee Ms. 68-355 Subscribers $4.00 36 pages (7Ji’gt!res, 2 tables)


Calculation of Second Virial Coefficients from Self-consistent lennard-Jones Parameters. A method is described for

rigorously calculating Lennard-Jones parameters from second virial coefficients. Correlations are developed relating the parameters to molecular properties and structure. Extension of the correlation appears promising.

Robert G. Kunz and Robert

S. Kapner, Rdnrselaer Polytechnic Institute

MS.68-356

54pages ( S j g u r e s , 3 tables)


A New Numerical Technique for Solving a Class of FirstOrder Partial Differential Equations. I. linear Equations.

Original partial differential equations are replaced by a set of simultaneous differential-difference equations incorporating a delay of the dependent variable. Theory underlying the new approach, application to a specific example, and comparison with finite-difference method are presented.

F. M . Smola and T. J . McAvoy, University of Massachusetts MS.68-357 Subscribers $3.00 25pages (5jigures, 1 table)


A New Numerical Technique for Solving a Class of FirstOrder Partial Differential Equations. II. Nonlinear Equations. T h e finite-difference-delay technique gives very accurate

solutions using an extremely small number of simultaneous approximating equations. For comparable accuracy, the method is substantially faster than the finite difference technique and the method of characteristics technique.

F. M . Smola and T . J.McAvoy, University of Massachusetts M s . 68-358 Subscribers $3.00 25pages (bjigures, 7 fa6le)


Nondestructive Testing for Void Content in Glass-FilamentWound Composites. T h e feasibility of various nondestructive

techniques for precise void determination in glass-filamentwound NOL rings is considered. Data indicate that infrared transmission, corona discharge, and density methods all have merit. Data from laser studies are inconclusive.

Basil E. Walker, Jr., C. T. Ewing, and R . R . Miller, U.S. N a u d Research Laboratory Ms. 68-361 Subscribers $3.00 29pages ($figures, 2 tables)


A n Experimental Investigation of Natural Convection Heat Transfer from a Uniformly Heated Vertical Plate Immersed in a l o w Prandtl Number Fluid. Surface temperature profiles,

isotherms in the boundary layer near the plate, and boundarylayer thickness are presented and compared with theory. Heat transfer results are compared with theory and previous work. Techniques are verified and results presented.

D.V . Julian and R . G. Akins, Kansas State Enginening MS.6 8 - 3 6 2 Subscribers $3.00 2 1 pages (9jigures)

Minute quantities of OXYGEN now measured faster, more accurately The Model 0, Type NEP-PL Oxygen Trace Analyzer efficiently and economically provides direct indication of the amount of oxygen present in many gases. Sample pressure 10 to 60 psig 0 Accuracy of -C5% of full scale 0 Choice of ranges by selector switch from 0-10 to 0-1000 ppm/v Recorder signal 0-10 mv Compact portable unit 0 Fast response 0 SimpliOptional fied operation features include: b a t t e r y operation, stainless steel flow system, adiustable high level alarm with reset button. For samples at atmospheric pressure, ask about the Type VAC unit. Write for additional information.

MANUFACTURERS ENGINEERING & EQUIPMENT CORP. 250 TITUS AVENUE, WARRINGTON, PA. 18976

RADI AT ION PRESERVATION OF FOODS ADVANCES IN CHEMISTRY SERIES NO. 65 Ionizing energy can contribute much toward helping close the world’s nutrition gap. As a result of a decade and a half of intensive research, a broad spectrum of highly acceptable, wholesome foods can be preserved by ionizing radiation. The fifteen papers in this symposium, sponsored by the ACS Divisions of Agricultural & Food Chemistry and of Nuclear Chemistry & Technology, cover research on fruits, vegetables, beef, fish, and shellfish. They also cover studies on volatile compounds induced by radiation, effect of radiation on organoleptic properties, radiation dosimetry, gamma irradiator design, and radiation sources and acilities.

184 pages with index cloth bound (1967) $7.00 postpaid in U.S.and Canada; plus 20 cents foreign and PUAS. Set of L. C. cards free with library orders


Order from: Surface Effects on Purified Water Resting In Glass and Nickel Vessels. T h e search continues for an artifact film suspected of

forming on very pure resting water and employs the floating boule as a test probe.

Kenneth Hickman, Rochester Institute of Technology Ms.

68-363

56pages ( 1 7 j g u r e s , 3 tables)

Sub.rcribers 86.00

Dept. G Special Issues Sales American Chemical Society 1155 Sixteenth St., N.W. Washington, D.C. 20036

Nonsubstribers $12.00 VOL. 6 0

NO.

10

OCTOBER

1968

71

R E S E A R C H RESULTS The Correspondence Principle for Transport Properties of Pure Dense Fluids. II. Nonpolar Polyatomic Fluids. Reasons

The Thermal Decomposition of Fibrillar Synthetic Boehmite.

Physico-chemical properties of Baymal were comprehensively studied using vacuum microbalance, DTA, x-ray, infrared spectroscopy, and nitrogen adsorption techniques. Results of each part of the study are presented and discussed individually.

why the simple corresponding stares principle does not apply accurately for transport properties of polyatomic fluids a t high density are discussed. A simple model is proposed as the basis for a rederivation of the correspondence principle.

Lloyd Abrams and itl. J. D.Low, iVeew York Lhversity M s . 68-365 Subscribers 85.00 41 pages (77figures, I table)

M.J. Tham and R. E. Gubbins, Cn:nicersif)lo j Florida M s . 68-369



32pages (8figures, 5 tables)

Optimum Tuning of a Slow Sampling Digital Control Algorithm. Presents a slow sampling digital control algorithm with optimum

Effect of Sonic Pulsations on l o c a l Mass Transfer Rate of Naphthalene from a Plate in Air Flow. Sonic pulsations of 10 to 13.6 kilocycles per second and 102 to 114 decibels caused a

tuning relationships needed to minimize ITAE as performance criterion. Shows sampling time effects and indicates "best" sampling frequency. Compares results quantitatively with conventional PI and PID control.

10 to 10070 increase in mass flux. Experimental data agreed with a model developed on the basis of the boundary layer theory.

Alfred M. Lopez, Paul W . Murrill, and Cecil L. Smith, Louisiana State University

Donald E. Honaker and Luh C. Tao, University of iVebraska ,Vi's. 68-366

Subscribers $2.00

79 pages (G$gures, 7 table)

'MS.68-370

A'onsubscribers $4.00

n'~nsubscribersSB.00

Methanation of Low-Concentration Carbon Monoxide Feeds Over Ruthenium. Methanation at ppm levels was studied over

The Correspondence Principle for Transport Properties of Pure Dense Fluids. 1. Monatomic Fluids. The two-parameter law of corresponding states is closely obeyed over the entire range

0.5y0ruthenium catalyst in a fixed-bed reactor. Reaction rate of C O follows simple psuedo first-order kinetics. Evidence of diffusion control of reaction rate was found in the higher temperature regions.

of temperature and density conditions for which data are available. Potential parameters determined from gas-phase viscosities correlate the data for both gas and liquid phases.

S. S. Randkaua, A. Rehmaf, and E. Camara, Institute of Gas Technolog]'

M . J. Tham and K . E. Gubbins, Lhiverszty ofFlorida Ms. 68-368 Subscribers 52.00 20pages (Gfigures, 4 tables)

Subscribers $3.00

24 Pages ( 7 7 jgures)

.MS. 68-374

Subsiribers $3.00

23 pages ( 7 1 figures)


lVonsubscribers $6.00

INDEX TO ADVERTISERS IN THIS ISSUE

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Chemical Abstracts Service. , , . , Chemical Engineering Catalog. Persons Advertising, Inc. Coulter Electronics, Industrial Div.. Leonard Primer Advertising, Inc.

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Distillation Products Industries. Runirill-Hoyt, Inc.

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Engelhard Hanovia, Inc., Hanovia Lamp Div. Keyes, Martin & Co.

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Hardinge Co., hletal Products Div., Koppers Co., Inc.. Adams Associates, Inc. Hercules Incorporated. Fuller & Smith & Ross, Inc. Ionac Chemical Co.. Rimrill-Hoyt, Inc.

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8

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9

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OBC

*Japan Catalytic Chemical Co., Ltd.. Daiko Advertising, Inc.

Industry ....................

IBC

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64

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IFC

Kay-Fries Chemicals Inc.. Warner, Bicking &'Fenwick, Inc. Chas. S. Lewis & Co., Inc.. Hal Poth Agency

Manufacturers Engineering and Equip. ment Corp..

.................. Shell Chemical Co.. . . . . . . . . . . . . . . . Ogilw & Mather, Inc.

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15 69

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Spraying Systems, Inc.. Advertising Producers-Associated, Inc.

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69 1 Detroit 6704

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Advertising Management for the American Chemical Society Publications REINHOLD PUBLISHING CORP. a Subsidiary of Litton Publications, Inc., Division of Litton Industries, Inc. 430 Park Ave., New York, N.Y. 10022 (Area Code 212) 688-8600 Cable Address: REINPUB NYK Thomas N. J. Koenver Advertising Sales Director, ACS Publications Robert N. Sillars, Jr. Advertzsing Sales Manager, ZilrEC Laurence 0 . Roberts Midwestern Regional Manager

(Area Code 313) Enterprise

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Houston 77006 Frank N. Vickrey, Richard Clothier, Roy McDonald Associates, Inc., 3130 Southwest Freeway, (Area Code 713) 529.6711

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Los Angeles 90045 Clay S. Holden Lynn Gaskill 8 9 i 9 So. Sepulveda Blvd.: Suite 528, (Area Code 213) 776.0552

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New York 10022 Robert N. Sillars, Jr., Edmund B. Sullivan, J. Ronald Doran, Harold I. Sheils, Jr Samuel W. Percy Denis A. Cardone, $30 Park Ave., (Are: Code 212) 68844600

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Philadelphia 19107 Benjamin W. Jones, 12 South 12th Street, (Area Code 215) 822.0346

.. Tulsa 74114 . , . Max C. Nelson, Roy Mc. Donald Associates Inc 2570 S, Harvard San Francisco Clay S. Holden, Lynn Gaskill, (Area bode 415) 421-8080 Ave., (Area Code b18)"724.9961

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Chicago 60603 Laurence 0 Roberts Thomas R. bliilerd Joseph C Hoopes D: Steven McLean i 0 South 'LaSalle 'St., (Area Code 312') 726.1282

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Cleveland 44114 Rodney D. Long, 1717 East 9th St., (Area Code 216) 771.4011

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Denver 80203 Robert H. Heidersbach, Roy MacDonald Associates, Inc., 846 Lincoln St., (Area Code 303) 825-3325

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RESEARCH RESULTS SERVICE Summaries of ... - ACS Publications

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