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1,761 Matching Results

Start Over Year 1987 Month December

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(open access)

2-Dimensional studies of the disk-and-washer and side-coupled resonant cavity structures

The work done consists of three parts: optimizing the disk-and-washer (DAW) structure at ..beta.. = 0.5662 corresponding to E = 200 MeV; comparing the DAW structure with the side-coupled (SCS) structure at various values of beta, ranging from ..beta.. = 0.4569 and E = 116 MeV to ..beta.. = 0.7131 and E = 400 MeV; and re-optimizing the DAW structure at ..beta.. = 0.7131. 4 refs., 51 figs., 41 tabs.

Date: December 1, 1987

Creator: Larry, L.D. Jr.

Object Type: Report

System: The UNT Digital Library

(open access)

300 Area Process Trench Sediment Analysis Report

This report describes the results of a sampling program for the sediments underlying the Process Trenches serving the 300 Area on the Hanford reservation. These Process Trenches were the subject of a Closure Plan submitted to the Washington State Department of Ecology and to the US Environmental Protection Agency in lieu of a Part B permit application on November 8, 1985. The closure plan described a proposed sampling plan for the underlying sediments and potential remedial actions to be determined by the sample analyses results. The results and proposed remedial action plan are presented and discussed in this report. 50 refs., 6 figs., 8 tabs.

Date: December 1, 1987

Creator: Zimmerman, M.G. & Kossik, C.D.

Object Type: Report

System: The UNT Digital Library

(open access)

15th Street News (Midwest City, Okla.), Vol. 16, No. 13, Ed. 1 Friday, December 4, 1987

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.

Date: December 4, 1987

Creator: Patrick, Lurah

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

15th Street News (Midwest City, Okla.), Vol. 16, No. 14, Ed. 1 Friday, December 11, 1987

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.

Date: December 11, 1987

Creator: Patrick, Lurah

Object Type: Newspaper

System: The Gateway to Oklahoma History

[7th and 8th Grade Class, Gallatin]

Copy negative of the 1921-1922 7th and 8th grade of Gallatin school. Those in the back row stand, while those in the front row sit on a bench.

Date: December 5, 1987

Creator: Cherokee County Historical Society

Object Type: Photograph

System: The Portal to Texas History

(open access)

Ability Grouping in College Beginning Media Writing Classes

The problem with which this investigation is concerned is that students of unequal writing ability are frequently placed in the same beginning media writing classes in college journalism. It is difficult for a teacher to be effective when the ability of the students ranges from those who cannot write clear complete sentences to others whose work already appears in newspapers and magazines. The purpose of this study is to determine whether students who are ability grouped into slow—average and advanced groups do the same, better, or worse than heterogeneously grouped students. In the spring semester of 1987, students in Journalism 1345, Media Writing laboratory, at the University of Texas at Arlington, were given a pretest to determine how well they wrote a simple news story and a simple feature story. On the basis of that test, which was graded by three raters, the students were placed in two separate ability groups in three classes. The fourth class contained students with heterogeneous abilities who were not placed in groups. At the end of the semester a posttest was given in news and feature writing. A two-way analysis of variance was used to analyze the posttest scores of sixty-seven students. There was …

Date: December 1987

Creator: Haber, Marian Wynne

Object Type: Thesis or Dissertation

System: The UNT Digital Library

(open access)

Absolute rate measurements of two-photon process of gases, liquids, and solids

Due to rapid improvements in high-power laser performance, two-photon absorption processes have become a very useful tool for studying the molecular structures of various gases, liquids and solids. However, measurements of absolute two-photon absorption cross sections were more or less ignored previously because of their small size. In this work, we obtained not only the two-photon absorption spectra, but also measurements of their absolute cross sections for various gases, liquids, and solids. 8 refs., 1 fig., 1 tab.

Date: December 1, 1987

Creator: Chen, C.H.; McCann, M.P. & Payne, M.G.

Object Type: Article

System: The UNT Digital Library

(open access)

Addendum to Microalgae Culture Collection 1986-1987

The SERI Microalgae Culture Collection was established in support of the U.S. Department of Energy Biofuels and Municipal Waste Technology Program to provide a repository for strains identified or developed for mass culture biomass production.

Date: December 1, 1987

Creator: Johansen, J. R.; Lemke, P.; Nagle, N. J.; Chelf, P.; Roessler, P. G.; Galloway, R. et al.

Object Type: Report

System: The UNT Digital Library

(open access)

Advanced combustion system for industrial boilers. Quarterly technical progress report, August 1987--October 1987

The purpose of this project is to develop an advanced coal-combustion system for industrial boilers. With the new combustion system, coal could be used to replace oil and possibly gas as fuel for many industrial boilers. The advanced combustion system is comprised of several parts: (1) A new burner-design concept for coal fuels, developed from the familiar gas turbine combustor-can designs that have proven efficient, reliable, durable, and safe for the combustion of liquid fuel oils. (2) A coal storage and dense-phase feed system for injecting clean, ultrafine pulverized coal into the burner at a low velocity. (3) An automatic control system based on feedback from low-cost automotive combustion-quality transducers. A cold flow model of an initial phase of the new burner design and the associated laser flow-visualization techniques were developed during this quarter. A series of modifications of the initial cold flow model will be tested to establish details of design for the new burner. Also a 200 hp firetube boiler has been installed and tested using number 2 oil as a fuel. This boiler will be used for future combustion testing with the new burner and ultrafine pulverized coal. Additionally an ultrafine-coal injector has been designed which will …

Date: December 31, 1987

Creator: Attig, R. C.; Foote, J. P.; Millard, W. P.; Schulz, R. J. & Wagoner, C. L.

Object Type: Report

System: The UNT Digital Library

(open access)

Advanced nuclear rocket engine mission analysis

The use of a derivative of the NERVA engine developed from 1955 to 1973 was evluated for potential application to Air Force orbital transfer and maneuvering missions in the time period 1995 to 2020. The NERVA stge was found to have lower life cycle costs (LCC) than an advanced chemical stage for performing low earth orbit (LEO) to geosynchronous orbit (GEO0 missions at any level of activity greater than three missions per year. It had lower life cycle costs than a high performance nuclear electric engine at any level of LEO to GEO mission activity. An examination of all unmanned orbital transfer and maneuvering missions from the Space Transportation Architecture study (STAS 111-3) indicated a LCC advantage for the NERVA stage over the advanced chemical stage of fifteen million dollars. The cost advanced accured from both the orbital transfer and maneuvering missions. Parametric analyses showed that the specific impulse of the NERVA stage and the cost of delivering material to low earth orbit were the most significant factors in the LCC advantage over the chemical stage. Lower development costs and a higher thrust gave the NERVA engine an LCC advantage over the nuclear electric stage. An examination of technical data …

Date: December 1, 1987

Creator: Ramsthaler, J.; Farbman, G.; Sulmeisters, T.; Buden, D. & Harris, P.

Object Type: Article

System: The UNT Digital Library

(open access)

Advances in technology for the construction of deep-underground facilities

The workshop was organized in order to address technological issues important to decisions regarding the feasibility of strategic options. The objectives of the workshop were to establish the current technological capabilities for deep-underground construction, to project those capabilities through the compressed schedule proposed for construction, and to identify promising directions for timely allocation of existing research and development resources. The earth has been used as a means of protection and safekeeping for many centuries. Recently, the thickness of the earth cover required for this purpose has been extended to the 2,000- to 3,000-ft range in structures contemplated for nuclear-waste disposal, energy storage, and strategic systems. For defensive missile basing, it is now perceived that the magnitude of the threat has increased through better delivery systems, larger payloads, and variable tactics of attack. Thus, depths of 3,000 to 8,000 ft are being considered seriously for such facilities. Moreover, it appears desirable that the facilities be operational (if not totally complete) for defensive purposes within a five-year construction schedule. Deep excavations such as mines are similar in many respects to nearsurface tunnels and caverns for transit, rail, sewer, water, hydroelectric, and highway projects. But the differences that do exist are significant. Major …

Date: December 31, 1987

Creator: unknown

Object Type: Article

System: The UNT Digital Library

(open access)

Aerobic Conditioning: Effects on Locus of Control, Mood States, and General Well-Being

This study was conducted to examine the sequelae of cardiovascular conditioning on locus of control, short-term mood, and psychological well-being. A pre-post test design, with control group, was used to measure the effects of a one month program of aerobic conditioning on adult volunteers. This study also sought to examine ways in which fitness changes covaried with psychological changes, and to describe patterns of change taking place during aerobic conditioning.

Date: December 1987

Creator: Bertschler, John Joseph, 1948-

Object Type: Thesis or Dissertation

System: The UNT Digital Library

(open access)

The Age, Volume 8, Number 12, December 1987

Monthly publication containing information related to Chambers County, Texas, including current events of the Chambers County Historical Commission, the Wallisville Heritage Park, and the Chambers County historical and genealogical societies; reprinted newspaper articles about county events and citizens; and historical news and records.

Date: December 1987

Creator: Wallisville Heritage Park (Organization)

Object Type: Journal/Magazine/Newsletter

System: The Portal to Texas History

(open access)

AIDS: An Overview of Issues

This report discusses the many difficult policy dilemmas associated with the AIDS epidemic, including past Congressional funding to support AIDS research and education efforts, strategies for controlling the spread of the AIDS virus, and methods and resources available for the care and treatment of persons with AIDS.

Date: December 24, 1987

Creator: Smith, Pamela W.

Object Type: Report

System: The UNT Digital Library

Alan Johnson, left, with unknown person

Photograph of two men with violins in front of a music stand.

Date: December 16, 1987

Creator: unknown

Object Type: Photograph

System: The Portal to Texas History

[Alan L. Bean, Astronaut]

Copy negative of astronaut Alan L. Bean presenting a photo of Apollo 12 on the Moon on the occasion of Jacksonville's Centennial Celebration in 1972. Standing, left to right, are Theron Ragsdale, Alan L. Bean, Mrs. Alan L. Bean (Sue Ragsdale), Mrs. Frank W. Ebaugh, and Mr. and Mrs. E. B. "Ned" Ragsdale.

Date: December 5, 1987

Creator: Cherokee County Historical Society

Object Type: Photograph

System: The Portal to Texas History