1,037 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Biology"  
Results: 1 - 24 next
open access

COMP: a BASIC language nonlinear least-squares curve fitting program

Description: COMP is an interactive nonlinear least squares routine written in BASIC language and used to obtain estimates of parameters in nonlinear functions and to approximate their associated statistical errors. The program uses the linearizing (or Taylor Series) expansion of partial derivatives outlined in Draper and Smith, (1966, pp. 267 to 270). Therefore, partial derivatives must be supplied (as well as the function) by the user for any new models not currently contained in the programs. When a line… more
Date: November 1, 1977
Creator: Thomas, J. M.; Cochran, M. I.; Watson, C. R. & Eberhardt, L. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Brookhaven highlights for fiscal year 1991, October 1, 1990--September 30, 1991

Description: This report highlights Brookhaven National Laboratory's activities for fiscal year 1991. Topics from the four research divisions: Computing and Communications, Instrumentation, Reactors, and Safety and Environmental Protection are presented. The research programs at Brookhaven are diverse, as is reflected by the nine different scientific departments: Accelerator Development, Alternating Gradient Synchrotron, Applied Science, Biology, Chemistry, Medical, National Synchrotron Light Source, Nuclea… more
Date: January 1, 1991
Creator: Rowe, M.S.; Cohen, A.; Greenberg, D.; Seubert, L. & Kuper, J.B.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pacific Northwest Laboratory, annual report for 1983 to the DOE Office of Energy Research. Part 4. Physical sciences

Description: Part 4 of the Pacific Northwest Laboratory Annual Report for 1983 to the Office of Energy Research, includes those programs funded under the title Physical and Technological Research. The Field Task Program Studies reports in this document are grouped under the subheadings and each section is introduced by a divider page that indicates the Field Task Agreement reported in that section. These reports only briefly indicate progress made during 1983. The reader should contact the principal investi… more
Date: February 1, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Research on human genetics in Iceland. Progress report

Description: Records of the Icelandic Population are being used to investigate the possible inheritance of disabilities and diseases as well as other characters and the effect of environment on man. The progress report of research covers the period 1977 to 1980. The investigation was begun in 1965 by the Genetical Committee of the University of Iceland and the materials used are demographic records from the year 1840 to present and various medical information. The records are being computerized and linked t… more
Date: October 31, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aquatic species project report: FY 1991

Description: This report summarizes the progress and research accomplishments of the Aquatic Species Project, which is managed by the National Renewable Energy Laboratory for the US Department of Energy. The project is focused on applying genetic engineering techniques to enhance the lipid, or oil, production of microalgae. Those lipids can be extracted and processed into high-energy liquid fuels such as diesel. Because microalgae require carbon dioxide, a major greenhouse'' gas, as a nutrient, project rese… more
Date: April 1, 1992
Creator: Brown, L.M. (National Renewable Energy Lab., Golden, CO (United States)) & Sprague, S. (USDOE, Washington, DC (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Genes and gene expression: Localization, damage and control -- A multilevel and inter-disciplinary study

Description: All projects are working toward a goal for describing the three dimensional nuclear topography in terms of relative spatial relationships among genes (specific DNA sequence). Methods are now being perfected to detect these genes, quantitatively and spatially, to perturb these genes specifically, and to measure the perturbation in order to assure specificity. We are developing methods to assay, after perturbation of the target DNA within living cells, whether or not only the target sequence are … more
Date: September 1, 1990
Creator: Ts'o, P.O.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The hemicellulases from the ethanologenic thermophile: Themoanaerobacter ethanolius

Description: Previously, we had only obtained extremely low xylanase activity in cultures of {ital Thermoanaerobacter ethanolicus} strain JW200, despite demonstrated xylan hydrolysis. We were not able to increase the enzyme activity or concentrate it in solution. Therefore, we decided to isolate new strains of thermophilic anaerobes with higher xylanase activity as a future source for cloning xylanases into {ital T. ethanolicus}. We now have organisms exhibiting 100-fold higher xylanase activity than JW200,… more
Date: May 1, 1991
Creator: Wiegel, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Darkling beetle populations (Tenebrionidae) of the Hanford site in southcentral Washington

Description: This 3-yr study documents the taxonomic composition, relative abundance, and seasonal distribution of darkling beetles occupying the Hanford Site in southcentral Washington. A taxonomic key and species diagnosis are provided to assist in identification by the nonspecialist. Analysis of food plant availability and selection serves to identify transfer pathways through beetle populations and permits construction of food web diagrams depicting the flow of materials through the darkling beetle comp… more
Date: February 1, 1978
Creator: Rogers, L. E.; Woodley, N.; Sheldon, J. K. & Uresk, V. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Life sciences

Description: This document is the 1989--1990 Annual Report for the Life Sciences Divisions of the University of California/Lawrence Berkeley Laboratory. Specific progress reports are included for the Cell and Molecular Biology Division, the Research Medicine and Radiation Biophysics Division (including the Advanced Light Source Life Sciences Center), and the Chemical Biodynamics Division. 450 refs., 46 figs. (MHB)
Date: April 1, 1991
Creator: Day, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MSU-DOE Plant Research Laboratory

Description: This document is the compiled progress reports of research funded through the Michigan State University/Department of Energy Plant Research Laboratory. Fourteen reports are included, covering the molecular basis of plant/microbe symbiosis, cell wall biosynthesis and proteins, gene expression, stress responses, plant hormone biosynthesis, interactions between the nuclear and organelle genomes, sensory transduction and tropisms, intracellular sorting and trafficking, regulation of lipid metabolis… more
Date: January 1, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Interdisciplinary research and training program in the plant sciences

Description: This document is the compiled progress reports from the Interdisciplinary Research and Training Program in the Plant Sciences funded through the MSU-DOE Plant Research Laboratory. Fourteen reports are included, covering topics such as the molecular basis of plant/microbe symbiosis, cell wall proteins and assembly, gene expression, stress responses, growth regulator biosynthesis, interaction between nuclear and organelle genomes, sensory transduction and tropisms, intracellular sorting and membr… more
Date: January 1, 1991
Creator: Wolk, C.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Progress report on research on human genetics in Iceland

Description: Records of the Icelandic population are being used to investigate the possible inheritance of disabilities and diseases as well as other characteristics and the effect of environment on man. The progress report of research covers the period from 1977 to 1980. The investigation was begun in 1965 by the Genetical Committee of the University of Iceland and the materials used are demographic records from the year 1840 to present and various medical information. The records are being computerized an… more
Date: October 31, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy-related doctoral scientists and engineers in the United States, 1975

Description: The pursuit of a vigorous research and development program to provide renewable and other resources to meet U. S. energy needs in the next century is an important objective of President Carter's National Energy Plan. A highly educated and motivated pool of engineers and scientists must be available for energy research and development if this objective is to be achieved. This report provides, for the first time, information about the number and characteristics of doctoral-level engineers an… more
Date: November 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

When is a dose not a dose

Description: Although an enormous amount of progress has been made in the fields of radiation protection and risk assessment, a number of significant problems remain. The one problem which transcends all the rest, and which has been subject to considerable misunderstanding, involves what has come to be known as the 'linear non-threshold hypothesis', or 'linear hypothesis'. Particularly troublesome has been the interpretation that any amount of radiation can cause an increase in the excess incidence of cance… more
Date: January 1, 1991
Creator: Bond, V.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Summary of Stock Identification Research on White Sturgeon of the Columbia River, 1985-1991 Final Report.

Description: White sturgeon (Acipenser transmontanus) are a long-lived, primitive fish species which forage primarily along the river bottom of large river systems in the Pacific Northwest. Historically, as an anadromous species, they could distribute downstream to feed in the rich estuary or marine areas and then migrate back up the river to spawn. With the historic river becoming a series of flooded impoundments, sturgeon were denied open river access, but they appear to have been able to adapt to the alt… more
Date: January 1, 1992
Creator: Setter, Ann L. & Brannon, E.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiological and Environmental Research Division, Center for Human Radiobiology. Annual report, July 1980-June 1981. [Lead abstract]

Description: Separate abstracts were prepared for the 22 papers of this annual report of the Center for Human Radiobiology. Abstracts were not written for 2 appendices which contain data on the exposure and radium-induced malignancies of 2259 persons whose radium content has been determined at least once. (KRM)
Date: March 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Uranium miner lung cancer study. Progress report, July 1, 1976--July 1, 1977

Description: This study was initiated in 1957 by the U.S. Public Health and many facets of this project are reaching final objectives. Many new studies have developed in the course of this study and will continue. The projects supported by the Energy Research and Development Administration are of utmost importance and consist of: collection of material from uranium miners known to have cancer of the lung into a tumor registry; manual on pulmonary cytology; regression study of sputum cytological findings in … more
Date: October 3, 1977
Creator: Saccomanno, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Detailed studies on the application of three fluorescent antibiotics for DNA staining in flow cytometry

Description: The effects of various fixative agents, pH, ionic strength, stain concentration, and magnesium concentration on DNA staining with the fluorescent antibiotics olivomycin, chromomycin A3, and mithramycin were examined with DNA in solution and in mammalian cells.
Date: January 1, 1977
Creator: Crissman, H.A.; Stevenson, A.P.; Orlicky, D.J. & Kissane, R.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Regulation of hemopoiesis: inhibitors and stimulators produced by a murine bone marrow stromal cell line (H-1)

Description: A murine cell line (H-1) probably derived from the adventitial reticular cell has been isolated and preserved. This line produces: (1) CSF; (2) a labile inhibitor of CFU-c proliferation with preferential action on granulopoiesis; (3) PGE; (4) proliferation inhibitors of BFU-E and GEMM; and (5) suppression of entry of CFU-S into DNA synthesis in vitro. It is postulated that the adventitial reticular cell (ARC) may play a major regulatory role in hemopoiesis through intramedullary production of t… more
Date: January 1, 1982
Creator: Cronkite, E. P.; Miller, M. E.; Garnett, H. & Harigaya, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Quantitative mammalian cell genetic toxicology: study of the cytotoxicity and mutagenicity of 70 individual environmental agents related to energy technologies and 3 subfractions of a crude synthetic oil in the CHO/HGPRT system. [Hamsters]

Description: Conditions necessary for quantifying mutation-induction to 6-thioguanine resistance, which selects for >98% mutants deficient in the activity of hypoxanthine-guanine phosphoribosyl transferase (HGPRT) in a near-diploid Chinese hamster ovary (CHO) cell line, referred to as CHO/HGPRT system, have been defined. Employing this mutation assay, we have determined the mutagenicity of diversified agents including 11 direct-acting alkylating agents, 16 nitrosamines, 10 heterocyclic nitrogen mustards,… more
Date: January 1, 1978
Creator: Hsie, A. W.; Neill, J. P. & San Sebastian, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen