mental data on physical parameters exemplified by the intrinsic viscosity as well as those that characterize con- figurational properties. It is evident, on examination of the data pre- sented, that RG methods constitute a striking improvement over earlier, more heuristic methods. However, it is also evident that much remains to be done in extending such calcula- tions to describe properties of highly branched polymers or the dynamical

- Monitor n

properties of polymers. on methods of modem statistical Freed’s book is very definitely an mechanics. For those with the proper

advanced monograph, requiring background, the monograph provides familiarity with diagrammatic meth- a useful introduction to the use of ods in statistical mechanics, func- RG techniques in the solution of tional integrals, methods of calcula- many problems in polymer physics.

tion based on the notions of scaling, as well as some techniques of quan- GEORGE H. WEISS turn field theory. The book is not, National Institutes of Health, therefore, one for the casual reader. Bethesda, MD 20892, U.S.A. In summary, Freed’s monograph is D really meant for investigators well up

m Meeting Report

International Colloquium on Wines and Wine Blending, Aix en Provence, France, 4 June 1987

This Symposium was organized by the Chamber of Agriculture of the Departement des Bouches du Rh6ne and held under the auspices of the Office International du Vin et de la Vigne, the international organization

responsible for, among many other things, the methods to define, control and promote the quality of wine throughout the world. Assembling or mixing wines is, within certain bounds, not only an accepted, but also a necessary operation to obtain

well balanced wines. About half of this Symposium was concerned with non-chemometrical subjects such as the species of vine or descriptors for the organoleptic description of wine. These subjects were presented mostly by the scientists of the famous ENSA and INRA oenological centers of

Montpellier. The chemometrical part of the

Symposium was mostly about experi- mental design. Many wine-growers grow different species of vine

(Cabernet, Syrah, Grenache, etc). The resulting wines, depending also on the climate and other external fac- tors, have different characters and, very often, a particular blend of the wines is of better quality than the individual ones or economically more satisfying. The decision on how to blend the wines is usually taken in an empirical or traditional way. R. Phan-Tan-Luu explained how to use mixture designs to do this in a more rational way. He gave several exam- ples of how to proceed. Typically a wine grower could have, for instance, three different pure wines at his dis- posal and his problem would be to obtain an organoleptically satisfying wine and at the same time use a sufficient quantity of each of the in- dividual wines to make it economi- cally sound.

Chemometrically, this means identifying a region in a ternary di- agram which satisfies or optimizes the organoleptical criterion, while at

the same time satisfying certain eco- nomic constraints. The selection of the optimal design is important. In- deed, one proceeds by making cer- tain blends and judging their organo- leptical quality with a panel of wine tasters. The number of blends to be tasted must be small since the quality of the judgment is impaired when a too large number of wines must be tasted. Therefore rather sophisticated experimental designs were used. The interpretation of the results was car- ried out using NEMROD, a multi-purpose program for experi- mental design.

Phan-Tan-Luu’s coworker, M. Sergent, showed applications to local wines such as those of the recent appellation Coteaux d’Aix. Other sci- entists gave examples of preliminary results obtained in other regions. For instance, M. Valade, from the Co- mite Interprofessionel des Vins de Champagne, gave results about the blending of three wines, a Chardon- nay, a Pinot Noir and a Meunier. The blending of these three wines before the actual Champagne wine is produced is a traditional and neces- sary operation. The preliminary re- sults led to a better understanding of

9

n Chemometrics and Intelligent Laboratory Systems

the relationships between the frac- tion of each of the wines present and

the future quality of the Champagne. Other results were presented by R. Cantagrel about Cognacs. My overall impression is that, although the chemometrical methodology is not widely used yet, it is certainly gaining recognition.

Apart from the experimental de- sign methodology, some attention was devoted to multivariate analysis.

J.M. Barril&e of INRA Narbonne gave examples of the use of corre- spondence factor analysis applied to the interpretation of organoleptic re- sults and the author of this report gave a short talk on pattern recogni- tion applied for the authentification of wines.

The proceedings of this Sym- posium will be published in French.

Details can be obtained from Profes- sor R. Phan-Tan-Luu, LPRAI, Centre

de Saint Jerome, Rue Henri Poincark, Universite d’Aix Marseille III, 13397 Marseille Cedex 13, France.

D.L. MASSART Farmaceutisch Znstituut,

Vrije Universiteit Brussel, Z-aarbeeklaan 103,

B-I 090 Brussels,

Belgium

D Calendar of Forthcomina Events

IO - I5 April 1988, Bristol, U.K. European School of Chemometrics Contact: Dr. R.G. Brereton, School of

Chemistry, University of Bristol, Can-

to&s Close, Bristol BS8 lTS, U.K. Tel.

(0272) 303030 ext. 4707, telex 44174

BUPHY.

18-20 May 1988, Amsterdam, The

Netherlands

CAC 88. 4th International Conference on Chemometrlcs in Analytical Chemistry Contact: Secretariat CAC 88, Laboratory

for Analytical Chemistry, University of

Amsterdam, Nieuwe Achtergracht 166,

1018 WV Amsterdam, The Netherlands.

Tel. 020-5256541, telex 16460 anal. them.

18-20 May 1988, Amsterdam, The

Netherlands

Pattern Recognition in Practice III Contact: Dr. E.S. Gelsema, Department of Medical Informatics, Free University, P.O. Box 7057,1007 MB Amsterdam, The Netherlands. Tel. 020-5486100.

30 May-3 June 1988, Au&non, France

Avignon 88 - 8th International Workshop on Expert Systems&Their Applications Contact: Dr. J.C. Rault, 269-287 rue de

la Garenne, 92000 Nanterre, France. Tel.

(33.1) 47807000, telex 612469.

19 - 26 June 1988, Trieste, Italy

EUCHEM Conference on Chemometrics in Organic and Bioorganic Chemistry

Contact: Professor Paolo Linda, Istituto

di Chimica Farmaceutica, Universita de-

gli Studi, Piazala Europa 1, 34128 Tri-

este, Italy. Tel. (040) 574181, telex 460865

UNIVTS I.

4 - 8 July 1988, Aix - Marseille, France

European School of Chemometrics (in French) Contact: Professor R. Phan Tan Luu,

Laboratoire de Prospective Reactionnelle

et d’Analyse de l’Information, UniversitC

de Science et Techniques, Rue Henri

Poincark, 13397 Marseille Cedex 13,

France.

8-II August 1988, Fort Collins, CO,

U.S.A.

1988 Joint Statistical Meetings of the American Statistical Association, Biomet- ric Society, IMS Contact: ASA, 806 1Sth Street N.W., Suite

640, Washington, DC 20005, U.S.A. Tel. (202) 393-3253.

19-21 August 1988, Berlin, G.D.R.

International Workshop on the Theory and Practice in Data Analysis Contact: Professor H. Lsiuter, Karl-

Weierstrass-Institute of Maths, Academy

of Sciences of the GDR, Mohrenstrasse

39, Berlin 1086, G.D.R.

22-25 August 1988, New Orleans, LA,

U.S.A.

Joint Annual Meetings: American Statisti- cal Association and Biometric Society Contact: ASA, 806 15th Street N.W., Suite

640, Washington, DC 20005, U.S.A. Tel.

(202) 393-3253.

5 - 9 September 1988, Jena, G. D. R.

4th Conference on Computer Application in Analytical Chemistry COMPANA ‘88 Contact: Professor K. Danzer, Sektion Chemie, Friedrich-Schiller-Universit%t Jena, Steiger 3, DDR-6900 Jena, G.D.R.

26 - 29 September 1988, Karlsruhe, F. R.G.

1 lth International CODATA Conference Contact: DECHEMA, attn. CODATA

Conference, P.O. Box 97 01 46, D-6000

Frankfurt/M. 97, F.R.G.

J 7- 20 October 1988, Beijing, China

IAPR - 9th International Conference on

Pattern Recognition Contact: 91CPR Secretariat, Chinese As-

sociation of Automation, P.O. Box 2728,

Beijing, China.

14- I7 August 1989, Washington, DC,

U.S.A.

150th Anniversary Meeting of the Ameri- can Statistical Association Contact: ASA, 806 15th Street N.W., Suite

640, Washington, DC 2ooO5, U.S.A. Tel.

(202) 393-3253.

27- 31 May I990, Atlantic City, NJ, U.S.A.

International Conference on Pattern Re- cognition Contact: Dr. H. Freeman, Rutgers Uni-

versity, Hill Center, New Brunswick, NJ

08903, U.S.A. Tel. (201) 932-4208.

10