Reginald P. T. Tomkins

The IUPAC-NIST Solubility Data Series: A Guide to Preparation and Use of Compilations and Evaluations *

The IUPAC-NIST Solubility Data Series (SDS) is an ongoing project that provides comprehensive reviews of published data for solubilities of gases, liquids and solids in liquids or solids. Data are compiled in a uniform format, evaluated and, where data from independent sources agree sufficiently, recommended values are proposed. This paper is a guide to the SDS and is intended for the benefit of both those who use the SDS as a source of critically evaluated solubility data and who prepare compilations and evaluations for future volumes. A major portion of this paper presents terminology and nomenclature currently recommended by IUPAC and other international bodies and relates these to obsolete forms that appear in the older solubility literature. In addition, this paper presents a detailed guide to the criteria and procedures used in data compilation, evaluation, and presentation and considers special features of solubility in gas+liquid, liquid+liquid, and solid+liquid systems. In the past, much of this information was included in introductory sections of individual volumes of the SDS. However, to eliminate repetitive publication, this information has been collected, updated, and expanded for separate publication here.

The strain energy of diphenylcyclopropenone: a reexamination

Calculs ab initio (4-31 G, 6-316*) de la stabilisation aromatique. Mesures calorimetriques de la chaleur de combustion

The IUPAC-NIST Solubility Data Series: A guide to preparation and use of compilations and evaluations (IUPAC Technical Report)

The IUPAC-NIST Solubility Data Series (SDS) is an ongoing project that provides comprehensive reviews of published data for solubilities of gases, liquids, and solids in liquids or solids. Data are compiled in a uniform format, evaluated, and, where data from independent sources agree sufficiently, recommended values are proposed. This paper is a guide to the SDS and is intended for the benefit of both those who use the SDS as a source of critically evaluated solubility data and who prepare compilations and evaluations for future volumes. A major portion of this paper presents terminology and nomenclature currently recommended by IUPAC and other international bodies and relates these to obsolete forms that appear in the older solubility literature. In addition, this paper presents a detailed guide to the criteria and procedures used in data compilation, evaluation, and presentation and considers special features of solubility in gas + liquid, liquid + liquid, and solid + liquid systems. In the past, much of this information was included in introductory sections of individual volumes of the SDS. However, to eliminate repetitive publication, this information has been collected, updated, and expanded for separate publication here.

Analog Computer Simulation of Energy and the Environment

Energy education is becoming recognized as a “basic skill” or “survival skill.” Programs are needed to increase public awareness of the current energy situation. The Energy-Environment Simulator is a specially designed analog computer that simulates real-world conditions, focusing on the current energy problems and looking at possible energy futures. The Simulator is capable of varying a large number of parameters affecting either the supply of energy or the demand for energy, as well as determining the rate at which the energy from each source is supplied for the various demands. A digital clock, proceeding at the rate of a century a minute, allows the operator to make decisions about the allocation of energy resources in response to changing conditions on a continuous basis. Different types of presentations of the Simulator are possible, depending on the nature and size of the audience and time available for the program. The Simulator is found to be an excellent educational tool, serving as a visible demonstration that the combination of limited fossil fuels with continued growth in energy consumption can lead to serious future energy problems.

Internal Energies of Combustion of Samples of Sewage Sludge

Abstract Characteristic values of the internal energies of combustion of a variety of dried industrial and domestic sludge samples were obtained using a PARR combustion calorimeter. Values are reported on an “as received,” “moisture-free,” and “ash-free” basis.