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90,829 Matching Results

Start Over Access Open Access Day 19th

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Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
[Brian Nosek Giving Lecture at Open Access Conference]

[Brian Nosek Giving Lecture at Open Access Conference]

Photograph of Brian Nosek, Professor, Department of Psychology at the University of Virginia. Nosek is giving a lecture to the conference goers at the Open Access Symposium. The theme of the conference is Open Access at the Tipping Point. The projection behind Nosek reads, "Improving Openness of Scholarly Communication. Brian Nosek."
Date: 2016-05-19/2016-05-20
Creator: Clark, Junebug
Object Type: Photograph
System: The UNT Digital Library
[Warren Burggren and Kevin Hawkins]

[Warren Burggren and Kevin Hawkins]

Photograph of Warren Burggren, Professor in the Department of Biological Sciences and Kevin Hawkins, Assistant Dean for Scholarly Communication UNT Libraries. Burggren and Hawkins are attending the Open Access Symposium 2016 conference at the University of North Texas Union building, the theme of the conference is Open Access at the Tipping Point.
Date: 2016-05-19/2016-05-20
Creator: Clark, Junebug
Object Type: Photograph
System: The UNT Digital Library
[Portrait of Johan Rooryck]

[Portrait of Johan Rooryck]

Photograph of Prof. Dr. J. E.C.V. Johan Rooryck, Professor of French Linguistics at Leiden University. Rooryck is attending the Open Access Symposium hosted and held in at UNT's Union building. The theme of the conference is Open Access at the Tipping Point.
Date: 2016-05-19/2016-05-20
Creator: Clark, Junebug
Object Type: Photograph
System: The UNT Digital Library
[Martin Halbert Speaking at the Open Access Symposium]

[Martin Halbert Speaking at the Open Access Symposium]

Photograph of Martin Halbert, dean of libraries at the University of North Texas, speaking into a microphone at the Open Access Symposium hosted and held at UNT's Union building. The theme of the conference is Open Access at the Tipping Point.
Date: 2016-05-19/2016-05-20
Creator: Clark, Junebug
Object Type: Photograph
System: The UNT Digital Library
[Allison Peters, Jason Colman and Meredith Kahn]

[Allison Peters, Jason Colman and Meredith Kahn]

Photograph of Allison Peters, (left) Author at Michigan Publishing, University of Michigan. Jason Colman, Director, Michican Publishing, University of Michigan, and Meredith L. Kahn, Women's Studies Librarian, University of Michigan. Peters, Colman and Kahn are attending the Open Access Symposium hosted and held at UNT's Union Building. The theme of the conference is Open Access at the Tipping Point. Peters, Colman and Kahn are seated in a hall with their fellow colleagues and other conference attendees.
Date: 2016-05-19/2016-05-20
Creator: Clark, Junebug
Object Type: Photograph
System: The UNT Digital Library
[J.E.C.V. (Johan) Rooryck and Katherine Skinner]

[J.E.C.V. (Johan) Rooryck and Katherine Skinner]

Photograph of J.E.C.V. (Johan) Rooryck, (left) and Katherine Skinner (right). Rooryck and Skinner are attending the Open Access Symposium hosted and held in UNT's Union building. The theme of the conference is Open Access at the Tipping Point. Rooryck and Skinner are seen posing for the photo and smiling at the camera. They're seated in a hall with other conference attendees.
Date: 2016-05-19/2016-05-20
Creator: Clark, Junebug
Object Type: Photograph
System: The UNT Digital Library
Election of the President by the house of Representatives (open access)

Election of the President by the house of Representatives

This report discusses the historical statistics of presidential election, the declaration of the results and other reports.
Date: August 19, 1968
Creator: Government and General Research Division
Object Type: Report
System: The UNT Digital Library
EXTRACTION OF NEPTUNIUM FROM ACIDIC SOLUTIONS BY ORGANIC NITROGEN AND PHOSPHORUS COMPOUNDS (open access)

EXTRACTION OF NEPTUNIUM FROM ACIDIC SOLUTIONS BY ORGANIC NITROGEN AND PHOSPHORUS COMPOUNDS

Neptunium distribution coefficients from acid nitrate, chloride, and sulfate solutions by several organic nitiogen and phosphorus compounds were measured as functions of several extraction variables, including neptunium valence, acid and salt concentration, and reagent concentration. Extractability by all the reagents varied in the order Np(IV)> Np(VI)>> Np(V). Except for primary amines, all reagents extracted Np(IV) much more strongly from nitrate than sulfate solutions. Among organonitrogen compounds the order of extractability of Np(IV) was: quaternary> tertiary> primary and secondary from nitrate solutions but primary>> secondary> tertiary from sulfate solutions. Neptunium(IV) nitrate extractions with the different extractants passed through maxima at widely different acid concentrations. In most cases, extraction increased when nitric acid was replaced by nitrate salt. Extraction was usually approximately proportional to the square of the reagent concentration. (auth)
Date: October 19, 1961
Creator: Weaver, B.
Object Type: Report
System: The UNT Digital Library
RADIOLOGICAL HAZARDS FROM RUPTURE OF THE SECONDARY COOLANT SYSTEM OF THE 10 Mw ESCR (open access)

RADIOLOGICAL HAZARDS FROM RUPTURE OF THE SECONDARY COOLANT SYSTEM OF THE 10 Mw ESCR

The hazards study was made to determine the radiation level from the secondary sodium lines of the l0-Mw ESCR, and to evaluate the corresponding radioactive concentration in the secondary loop and the maximum permissible effective activation flux in the intermediate heat exchanger. The results are presented graphicallyn the radiation level from the coolant lines during normal operation as a function of line diameter and Na/sup 4/ concentration; the effective thermal neutron activation flux level in the intermediate heat exchanger as a function of the Na/sup 4/ concentration in the secondary loop and the ratio of the time spent in the flux field to the time spent in making one cycle; average Na concentration in the reactor room atmosphere for operative and inoperative ventilation systems, assuming that all the sodium in the secondary system is released to the room and burns; and the downwind concentration of Na/ sup 24/ resulting from the release of all the secondary sodium on an open pad area exterior to the reactor building. An analysis of the results shows that in the event of an accident the toxicological hazards are more severe than the radiological hazards. Recommendations are given for minimizing the toxological hazards. (B.O.G.)
Date: January 19, 1960
Creator: Piccot, A.R.
Object Type: Report
System: The UNT Digital Library
Notes on Luminosity Variation at ISABELLE (open access)

Notes on Luminosity Variation at ISABELLE

In the present ISABELLE design, the luminosity at each insertion will be the same, unless special efforts are taken to get a low-..beta.. insertion or reduced crossing angle. These can only change the luminosity by factors of 2 to 4 from insertion to insertion. An estimation of the range of desired luminosities is given.
Date: October 19, 1977
Creator: Herrera, J. C.; Marx, M.; Roe, B. & Rosenberg, E. I.
Object Type: Article
System: The UNT Digital Library
Civilian Power Reactor Program. Part II. Economic Potential and Development Program. Heavy Water-Moderated Power Reactor (open access)

Civilian Power Reactor Program. Part II. Economic Potential and Development Program. Heavy Water-Moderated Power Reactor

The reactor design which forms the base for the current economic status of D/sub 2/O-moderated reactors was estimated from developments in several reactor programs. However, since a heavy water-moderated reactor was not operated on natural U fuel at power reactor conditions, considerable improvement from this current status can be foreseen. A summary of improvements is presented concerning the concept which would result solely from operation of succeeding generation plants without a parallel development program, and improvements which would result from the successful completion of the development program as presented. One plant size was used in the evaluation of plant potential, with a 300 Mw/sub e/ nominal rating. The boiling D/sub 2/O-cooled, pressure tube direct cycle plant design was used. The current development program is outlined; this work includes several items leading to the long-range development of the concept. (auth)
Date: August 19, 1960
Creator: Hutton, J. H.; Davis, S. A.; Graves, C. C. & Duffy, J. G.
Object Type: Report
System: The UNT Digital Library
INSTRUMENTATION AND CONTROLS DIVISION ANNUAL PROGRESS REPORT FOR PERIOD ENDING JULY 1, 1961 (open access)

INSTRUMENTATION AND CONTROLS DIVISION ANNUAL PROGRESS REPORT FOR PERIOD ENDING JULY 1, 1961

The report comprises seven sections. A separate abstract was prepared for each section. (J.R.D.)
Date: February 19, 1962
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Civilian Power Reactor Program. Part III. Status Report on Large (100 and 300 MWe) Heavy Water-Moderated Power Reactors--as of 1960 (open access)

Civilian Power Reactor Program. Part III. Status Report on Large (100 and 300 MWe) Heavy Water-Moderated Power Reactors--as of 1960

An evaluation of 300- and 100-Mwe power plants was conducted using ground rules prescribed by the USAEC for this study. Costs corresponding to two average discharged fuel burnups are: 8.6 mills/kwh (8500 Mwd/ metric ton) and 8.8 mills/kwh (7500 Mwd/metric ton) for the 300-Mw plant. Costs for the 100 Mw plant are 14.7 mills/kwh for an average discharged fuel burnup of 6010 Mwd/metric ton. Estimates of future potential indicate that the 300 Mw/sub 3/ (8500 Mwd/metric ton) plant could produce power for 7.3 mills/kwh in a second generation, full scale plant of the same type. A further reduction to 6.4 mills/kwh should be possible as the result of the recommended ten-year development program. The current development program is adequate for providing the data needed to design and construct a prototype reactor. However, there is no natural U-fueled prototype and no prototype of the chosen reference design scheduled in the U.S. Current technology is sufficiently developed to initiate the design and construction of a pressure tube, boiling D/sub 2/Ocooled, natural UO/sub 2/- fueled reactor prototype plant in the immediate future. This plant would demonstrate the main features of a full scale plant and, in addition. would provide design data which could …
Date: August 19, 1960
Creator: Hutton, J. H.; Davis, S. A.; Graves, C. C. & Duffy, J. G.
Object Type: Report
System: The UNT Digital Library
Low Temperature Thermoluminescence of Gamma Irradiated Potassium Dihydrogen Phosphate (open access)

Low Temperature Thermoluminescence of Gamma Irradiated Potassium Dihydrogen Phosphate

Thermoluminescence in potassium dihydrogen phosphate (KDP) induced by Co/ sup 60/ gamma irradiation at liquid nitrogen temperature (-198 deg C) was investigated. Glow curves in the temperature range --196 to 0 deg C were measured for a series of gamma exposure dosages ranging from 10/sup 4/ roentgen to 5 x 10/sup 6/ roentgen. The heating rate used for glow curve measurements was 12 deg C per minute. Twice recrystallized Mallinckrodt reagent grade potassium dihydrogen phosphate, with a grain size between 100 and 170 mesh, was used for most samples. In the case of the powder samples, the glow curve for an exposure dose of 10/sup 4/ roentgen exhibited two peaks in this temperature range, one at approximately --78 deg C and the other at approximately -146 deg C. The -78 deg C peak split into two distinct peaks with increasing dosage. At still higher doses an additional peak at about -9 deg C became evident. This peak may, however, be due to aluminum oxide. Calculation of the trap depth, E, and the frequency factor, s, associated with the --78 deg C peak, by the approximate method of Grossweiner yielded values of 0.485 ev and 9.97 x 10/sup 10/ sec/sup -1/ …
Date: October 19, 1962
Creator: Sims, T. M.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Establishment and maintenance of a coal sample bank and data base (open access)

Establishment and maintenance of a coal sample bank and data base

During the current reporting period a total of 139 samples (46 DOE Sample Bank samples and 93 other Penn State samples) of various sizes were distributed. Sixty-three of the samples were distributed to DOE or its contractors; 76 were distributed to other agencies. A total of 88 data printouts were distributed. In addition, seven special data requests were fulfilled by either search/sort and printout or creation of a data disk. Several preliminary requests for Sample Bank and Data Base information have also been handled.
Date: April 19, 1989
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Determination of chloride contamination on detonator components by SAM and ESCA (open access)

Determination of chloride contamination on detonator components by SAM and ESCA

None
Date: May 19, 1975
Creator: Colmenares, C.
Object Type: Article
System: The UNT Digital Library
Superconductor development program at Lawrence Livermore Laboratory (open access)

Superconductor development program at Lawrence Livermore Laboratory

Winding of a Nb--Ti test coil at the Lawrence Livermore Laboratory is nearly complete. The conductor in this coil operates in a maximum field of 7.5 T and provides the 2-T field required by the Mirror Fusion Test Facility. Nb/sub 3/Sn multifilamentary conductors, made using the ''bronze'' technique, appear capable of providing the higher fields needed by commercial reactors.
Date: January 19, 1978
Creator: Cornish, D.N.
Object Type: Article
System: The UNT Digital Library
Establishment and maintenance of a coal sample bank and data base. [Including sample preparation without oxidation] (open access)

Establishment and maintenance of a coal sample bank and data base. [Including sample preparation without oxidation]

Retrieval of 5-lb splits of -1/4 inch coal from designated 30-gallon drums was completed. Preparation and analysis of these samples for the second yearly quality evaluation is in progress. After consultation with the DOE Project Manager, two replacement samples were collected. These are the first of the series which will be stored in foil laminate bags. Both of these samples were placed in 30 gallon steel drums lined with polyethylene bags at the mine site. They were equipped with lid gaskets made from Tygon tubing, and 1/4 in. metal tubing fittings to purge and pressurize the drum with argon.
Date: January 19, 1990
Creator: Davis, A.
Object Type: Report
System: The UNT Digital Library
CHARACTERIZATION OF UO$sup 2$ POWDERS. Progress Report No. 8, May and June 1961 (open access)

CHARACTERIZATION OF UO$sup 2$ POWDERS. Progress Report No. 8, May and June 1961

Correlation of a number of physical and chemical properties of 12 different UO/sub 2/ powders was continued. The UO/sub 2/ powders were studied by means of infrared absorption measurements, oxidation temperatures as determined by hot stage microscopy techniques, and B. E. T. surface area measurements. Additional pellets were prepared to study ceramic performance. (M.C.G.)
Date: July 19, 1961
Creator: Carpenter, J.F.
Object Type: Report
System: The UNT Digital Library
(Test and gather data on sweep spike combination tillage tool) (open access)

(Test and gather data on sweep spike combination tillage tool)

This summary presents the data accumulated to date with only brief comment. It is prepared with the intent that the viewers will offer advice on terminology, data presentation, methods and other. The year end analysis will detail changes in the data due to the tillage treatments. The data is incomplete due to equipment problems and time limitations due to the wet fall and early freeze up. The trial was not completed due to our inability to get the Mikkelsen Chisel Plow Shovel (MCP), a 16 inch sweep with an anhydrous knife, to penetrate untilled land. The MCP shovel penetrated to deep on plowed ground and pulled so hard that the front wheels of our JD4440 tractor were jerked off the ground. The Standard Chisel Plow Shovels (SCP), a 16 inch sweep, worked well and the data is included.
Date: June 19, 1992
Creator: Lukach, J.
Object Type: Report
System: The UNT Digital Library
Enhancing the use of coals by gas reburning-sorbent injection (open access)

Enhancing the use of coals by gas reburning-sorbent injection

The objective of this project is to evaluate and demonstrate a cost effective emission control technology for acid rain precursors, oxides of nitrogen (NO{sub x}) and sulfur (SO{sub x}), on two coal fired utility boilers in Illinois. The units selected are representative of pre-NSPS design practices: tangential and cyclone fired. Work on a third unit, wall fired, is on hold'' because of funding limitations. The specific objectives are to demonstrate reductions of 60 percent in NO{sub x} and 50 percent in SO{sub x} emissions, by a combination of two developed technologies, gas reburning (GR) and sorbent injection (SI). With GR, about 80{endash}85 percent of the coal fuel is fired in the primary combustion zone. The balance of the fuel is added downstream as natural gas to create a slightly fuel rich environment in which NO{sub x} is converted to N{sub 2}. The combustion process is completed by overfire air addition. SO{sub x} emissions are reduced by injecting dry sorbents (usually calcium based) into the upper furnace. The sorbents trap SO{sub x} as solid sulfates that are collected in the particulate control device.
Date: July 19, 1990
Creator: unknown
Object Type: Report
System: The UNT Digital Library
INFLUENCE OF RADIATION FROM AN UNSHIELDED REACTOR ON A NATURAL MICROFLORA (open access)

INFLUENCE OF RADIATION FROM AN UNSHIELDED REACTOR ON A NATURAL MICROFLORA

The soil microflora and its respiratory activity were measured in soil cores collected at different distances from an unshielded reactor. No direct correlation was found between dose received and microbial counts or respiration. Indication of a correlation between dose and microbial respiration was obtained after eliminating the overriding influence of moisture. Radiation probably affected the soil microflora through damage to the phanerogam vegetation rather than directly. This preliminary study indicates the need to have undisturbed sampling areas close to the ORNL fast burst reactor. Extensive dosimetry, both in and above the soil, in these areas, and a program of long-term ecological descriptibn, should be started before the reactor becomes operational. (auth)
Date: October 19, 1961
Creator: Witkamp, M.
Object Type: Report
System: The UNT Digital Library
Development of improved iron Fischer-Tropsch catalysts (open access)

Development of improved iron Fischer-Tropsch catalysts

The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date: July 19, 1991
Creator: Bukur, D.B.
Object Type: Report
System: The UNT Digital Library
Bibliography: injection technology applicable to geothermal utilization (open access)

Bibliography: injection technology applicable to geothermal utilization

This bibliography cites 500 documents that may be helpful in planning, analysis, research, and development of the various aspects of injection technology in geothermal applications. These documents include results from government research; development, demonstration, and commercialization programs; selected references from the literature; symposia; references from various technical societies and installations; reference books; reviews; and other selected material. The cited references are from (1) subject searching, using indexing, storage, and retrieval information data base of the Department of Energy's Technical Information Center's on-line retrieval system, RECON; (2) searches of references from the RECON data base, of work by authors known to be active in the field of geothermal energy research and development; (3) subject and author searches by the computerized data storage and retrieval system of Chemical Abstracts, American Chemical Society, Washington, DC; and (4) selected references from texts and reviews on this subject. Each citation includes title, author, author affiliation, date of publication, and source. The citations are listed in chronological order (most recent first) in each of the subject categories for which this search was made. The RECON accession number is also given.
Date: March 19, 1982
Creator: Darnell, A. J. & Eichelberger, R. L.
Object Type: Report
System: The UNT Digital Library