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Aluminium is being increasingly used in refinery construction. Applications range from storage tanks to moisture‐proofing pipe insulation; from heat exchangers to structural elements. The main reasons for this are its good resistance to many types of corrosion, low weight, low cost per unit volume, high thermal conductivity, non‐magnetic and non‐sparking characteristics, good reflectivity and good appearance. From the design engineer's point of view, the metal has the further advantages of good workability and high strength in its alloys. The author describes some of the current practices and experiences in the U.S.A.

SOLVENT DEWAXING OF LUBRICATING oils found its first commercial application in 1927 when Indian Refining Company started its original acetone‐benzene dewaxing operation. Since that time, solvent dewaxing has wholly superseded the classical cold pressing methods in new installations. Of 171,165 bbls/doz. lube oil produced in the United States in 1951, some 60% was of the solvent extraction type and 40% of the older conventional type. By 1954, solvent extraction's share had risen to an estimated 75% of all dewaxing operations.

FOUR TYPES OF MACHINE COOLANTS are in common use today; straight cutting oils, soluble oils, chemical emulsions, and chemical solutions.

OXYGEN, HUMIDITY, air pollutants, and dust are the chief causes of atmospheric corrosion in industrial plant and equipment. Oxygen, of course, is always present in air at a constant concentration. The chief variables which affect the plant's atmospheric corrosion loss are, therefore, humidity, electrolytes in the air, and dust. These components may be corrosive by themselves or many promote the corrosive effect of oxygen.

This article provides a historical literature review and exploratory descriptive case study of one U.S. Federal agencyʼs efforts to design an appropriate government-wide leadership development curriculum for incumbent top or senior civil servants. The U.S. Federal Executive Institute was founded in 1968, it spans the 20th and 21st centuries, it illustrates changes in the compact that exists between government and its top civil servants over time, and it illustrates challenges this agency confronts addressing the task of interagency leadership development. The main findings are three continuities and three discontinuities between curriculum development then and now. Conclusions outline issues for future interdisciplinary research to inform the intellectual roots for 21st century curricula aligned to emerging roles and the challenges top career executives actually confront.

I HAVE sometimes been asked whether I am conscious, as the present editor of THE LIBRARY WORLD, of the spirit and influence of its founder, James Duff Brown, and of his editorial successors, who included J. D. Stewart and W. C. Berwick Sayers. The answer is that of course I am—how could it be otherwise?

It has often been said that a great part of the strength of Aslib lies in the fact that it brings together those whose experience has been gained in many widely differing fields but who have a common interest in the means by which information may be collected and disseminated to the greatest advantage. Lists of its members have, therefore, a more than ordinary value since they present, in miniature, a cross‐section of institutions and individuals who share this special interest.

As our correspondent on another page suggests, the economic crisis may have reactions upon libraries. The most obvious one he mentions is the increased difficulty we shall experience in obtaining American books. Not all libraries, public or private, make any special collection of books published in the United States, although there has been an increasing tendency to buy more as the relations of the two countries have grown closer through their common struggle; in fact, we know libraries which have spent many hundreds of pounds in the course of the past year or two on the select lists of books which have been made for us by American librarians. It is most unfortunate that the manipulation of dollar currency should have brought about a situation in which even the exchange of ideas between the countries becomes more difficult. One suggestion might be made and that is that our American colleagues should continue to sift the literature of this time of famine for us, so that further select lists may be available in better days.

The entropy and thermal behavior analyses of non-Newtonian nanofluid double-diffusive natural convection inside complex domains may captivate a bunch of scholars’ attention because of the potential utilizations that they possess in modern industries, for example, heat exchangers, solar energy collectors and cooling of electronic apparatuses. This study aims to investigate the second law and thermal behavior of non-Newtonian double-diffusive natural convection (DDNC) of Al₂O₃-H₂O nanofluid within a C-shaped cavity emplacing two hot baffles and impacted by a magnetic field.

For the governing equations of the complicated and practical system with all considered parameters to be solved via a formidable numerical approach, the finite element method acts as an approach to achieving the desired solution. This method allows us to gain a detailed solution to the studied geometry.

This investigation has been executed for the considered parameters of range, such as power-law index, baffle length, Lewis number, buoyancy ratio, Hartmann number and Rayleigh number. The main results reveal that isothermal and concentration lines are significantly more distorted, indicating intensified concentration and temperature distributions because of the growth of baffle length (L). Nu_ave decreases by 8.4% and 0.8% while it enhances by 49.86% and 33.87%, respectively, because of growth in the L from 0.1 to 0.2 and 0.2 to 0.3.

Such a comprehensive study on the second law and thermal behavior of DDNC of Al₂O₃-H₂O nanofluid within a C-shaped cavity emplacing two hot baffles and impacted by magnetic field has not yet been carried out.

Communications regarding this column should be addressed to Mrs. Cheney, Peabody Library School, Nashville, Term. 37203. Mrs. Cheney does not sell the books listed here. They are available through normal trade sources. Mrs. Cheney, being a member of the editorial board of Pierian Press, will not review Pierian Press reference books in this column. Descriptions of Pierian Press reference books will be included elsewhere in this publication.