Cold climate water/wastewater transportation and treatment - a bibliography: completion report

This bibliography contains 1,400 citations, including published and unpublished papers, on cold-climate water and wastewater transportation and treatment systems. Sources listed include state and federal agency files which contain information on systems in Alaskan communities and the Alyeska Pipeline Service Company camps. References to systems in other northern countries are also included. The objectives of this study were to identify causes of the failure of Alaskan water and wastewater treatment and transportation facilities and to seek methods for design improvements. Originally, the investigators contemplated an evaluation of systems performance in remote areas in relation to the original conception, planning, design, and construction. Because of the tremendous amount of literature examined, the evaluation was undertaken in a subsequent study, "Alaska Wastewater Treatment Technology" (A-058-ALAS) by Dr. Ronald A. Johnson.OWRT AGREEMENT NO. 14-31-0001-5002 PROJECT NO. A-047-ALAS The work upon which this completion report is based was supported by funds provided by the U. S. Department of the Interior, Office of Water Research and Technology, as authorized under the Water Resources Research Act of 1964, Public Law 88-379, as amended

An extensive English language bibliography on graph theory and its applications

Bibliography on graph theory and its application

Magnetic Suspension and Balance Systems: A Comprehensive, Annotated Bibliography

This bibliography contains 301 entries. Results are reported of recent studies aimed at increasing the research capabilities of magnetic suspension and balance systems; e.g., increasing force and torque capability, increasing angle of attack capability, and increasing overall system reliability. The problem is addressed of scaling from the relatively small size of existing systems to much larger sizes. The purpose of the bibliography is to provide an up-to-date list of publications that might be helpful to persons interested in magnetic suspension and balance systems for use in wind tunnels. The arrangement is generally chronological by date of presentation. However, papers presented at conferences or meetings are placed under dates of presentation. The numbers assigned to many of the citations have been changed from those used in the previous bibliography. This has been done in order to allow outdated citations to be removed and some recently discovered older works to be included in their proper chronological order. Author, source, and subject indexes are included in order to increase the usefulness of this compilation

TRACING THE DEVELOPMENT OF A CONCEPTUAL FRAMEWORK OF ACCOUNTING A WESTERN EUROPEAN AND NORTH AMERICAN LINKAGE: A PARTIAL EXAMINATION

Given the call for the development of an accounting conceptual framework, this paper rejects the need for such an undertaking. Using a historical methodology this paper traces the existence of an accounting conceptual framework that painstakingly has been established over the centuries. The paper maintains that the existing need is to fine tune the exisiting framework.A Classical Model of Accounting; measure ment and communication processes; stock-jobbing of companies' shares; 'Bubble Act'; environmental stimulus; feudal system; venture accounting; 'economic capital maintenance'; creditors' protection; Joint Stock Companies; conservatism; corporate capitalism; corporate social responsibility.

GIZENGA, Dabu

The Dabu Gizenga*collection on Kwame Nkrumah spans the time period of 1939-1974. The collection measures approximately 13½ linear feet. The collection contains newsclippings, journal articles and documents, printed materials, tape recorded interviews, photographs, and artifacts. The Moorland-Spingarn Research Center acquired the Dabu Gizenga collection by bequest of Gizenga\u27s (Jesse A. Dixon\u27s) will, in 1980

Acoustic oscillations in solid propellant rocket chambers

Acoustic Oscillations in Solid Propellant Rocket Chambers. Among the various kinds of periodic motions observed in rocket combustion chambers, the most common and simplest to analyze are those related to classical acoustic modes. If the amplitudes are small, the main perturbations of the familiar standing or travelling waves in a closed chamber are proportional to the Mach number of the mean flow. The correct equations describing the problem are here obtained from the general equations of motion by a limit process which will also provide equations for studying waves of finite amplitude. Subsequently, a single non-homogeneous wave equation is deduced, and solved by an iteration· perturbation procedure. The principal result is a simple formula for the complex frequency showing explicitly the effects of burning, suspended particles in the gases, the exhaust nozzle, and viscous wall forces as well as the mean flow itself. The last is particularly interesting since, owing primarily to the flow inward from the burning surface, the mean flow, if it is irrotational, never acts to damp modes which do not involve axial oscillations. As a particular application, the extensive data taken by BROWNLEE and MARBLE are interpreted to the extent that the linear analysis permits. A stability boundary was obtained from 250 firings of small cylindrical rockets, the principal variables being initial port diameter and length. The propellant did not contain metal particles, and it appears that the observations cannot be explained by the supposition that viscous damping associated with particles in the product gases was the main source of energy loss. Apparently dissipation at the head end, such as that associated with tangential wall shear forces, was an important loss. On the other hand, there is little doubt that if the combustion produces particles, the consequent dissipation is adequate to damp small amplitude waves

Bipropellant and quadredundant valves, volume 1 Final report

Performance tests on bipropellant and quadredundant propellant valves for rocket engine