Presented here are notes for a course in PL/I. They might serve as a guide to those who are developing a course, or as class notes for that course. They might be useful as a textbook independent of any course; as such a textbook, however, they are not self-contained because of the built-in assumption that they will supplement lectures and be accompanied by manuals. Very nearly the full language is taught here, with the emphasis on concepts rather than practical details. Discussion of I/O is avoided until roughly the midpoint of the course. The hoped-for consequence for students is an enhanced perception and understanding of the many concepts and their logical relationships. The dawning of the age of transportability for PL/I programs gives the user a reason, for the first time, to avoid convenient but illegal language.

A condition of compression loading could possibly occur to a subassembly as a result of large length changes to irradiation-induced swelling and thermal expansion. The effects of axial compression loading on EBR-II experimental and driver-fuel subassemblies were evaluated. Compression tests that were performed on the slotted top fixture of a subassembly showed that a force of 2100 lb at 900 degrees F would close the slot enough so that the core-gripper blade would not fit into the slot. Such a slot closure would prevent the subassembly from being removed from the reactor with the core gripper.

This report critically reviews the available information pertinent to the potential use of uranium-plutonium-zirconium alloy fuels clad with stainless steel in LMFBR's. The areas considered include breeding potential, burnup potential, thermal performance, fuel fabricability, fuel reprocessing, and safety considerations. Because information on uranium-plutonium-zirconium alloys is limited, wide use is made of experience with EBR-II metallic driver fuel to infer advantages and limitations of uranium-plutonium-zirconium fuels. It is concluded that sufficient potential exists for the applicability of uranium-plutonium-zirconium fuels to LMBFR's to warrant additional analytical and experimental studies.

Preliminary results are given of a study of probable carbon monoxide pollution concentrations in the South Loop area that may arise from either of two alternative Franklin Street Connector plans proposed by the Chicago Bureau of Street Traffic and by Alan M. Voorhees and Associates.

Annual report of the Argonne National Laboratory Radiological and Environmental Research Division regarding activities related to ecology. This report includes a study of the effect of phosphorus on cadmium accumulation by exposure to 3-week-old soybeans to 0.5 ppm cadmium in the presence of added phosphate in a standard Hoagland nutrient solution for 2 days.

Annual report of the Argonne National Laboratory Radiological and Environmental Research Division regarding activities related to molecular physics and chemistry. The papers in the present volume are ordered in accordance with the subjects treated. Papers 1-6 concern electron energy-loss spectroscopy; papers 7-24 photoabsorption, photoionization, and photoelectron analysis; papers 25-34 electron collisions and related topics; papers 35-36 the delivery of radiation energy to matter; and papers 37-40 energetic collisions of atoms and molecules.

Annual report of the Argonne National Laboratory Division of Biological and Medical Research summarizing research an other activities. This report includes studies conducted during calendar year 1975 when the Division of Biological and Medical Research was initiating its responses to the challenge posed by the enlarged mission in the field of energy production of its principal sponsor, the U.S. Energy Research and Development Administration.