Browsing ScholarWorks@UMBC by Issue Date

Now showing items 1-20 of 10803

    • Topside Ionosphere of Venus and its Interaction with the Solar Wind 

      Bauer, S. J.; Hartle, R. E.; Herman, Jay (Nature, 1970-02-07)
      THE abrupt termination of the daytime ionosphere of Venus at about 500 km observed with the Mariner V two-frequency occultation experiment provides an extremely interesting picture of the direct interaction of the solar ...

    • Specialized transducing phages for ribosomal protein genes of Escherichia coli 

      Jaskunas, S. R.; Lindahl, L.; Nomura, M. (National Academy of Sciences, 1975-01-01)
      Specialized lambda transducing phages have been isolated carrying approximately half the ribosomal protein genes of E. coli. These phages carry regions of the bacterial chromosome between aroE and fus. The ribosomal protein ...

    • Cluster of genes in Escherichia coli for ribosomal proteins, ribosomal RNA, and RNA polymerase subunits 

      Lindahl, L.; Jaskunas, S. R.; Dennis, P. P.; Nomura, M. (National Academy of Sciences, 1975-07-01)
      This work was supported in part by the College of Agriculture and Life Sciences, University of Wisconsin, and by grants from the National Science Foundation (GB31086) and the National Institute of General Medical Sciences ...

    • Involuntary Community: Conscientious Objectors at Patapsco State Park During World War II 

      Orser, W. Edward (Maryland Center for History and Culture, 1977)
      IN MAY 1941 TWENTY-SIX IDEALISTS RETREATED INTO THE WOODS OF PATAPSCO State Park near Baltimore to form a community of pacifists in a nation on the verge of war. While the camp they established resembled many experiments ...

    • Mapping of ribosomal protein genes by in vitro protein synthesis using DNA fragments of lambda fus3 transducing phage DNA as templates 

      Lindahl, Lasse; Post, Leonard; Zengel, Janice; Gilbert, Scott F.; Strycharz, William A.; Nomura, Masayasu (1977-10-25)
      hfus3 (or hfus2) transducing phage stimulates the synthesis of 27 ribosomal proteins, elongation factors EF-Tu and EF-G, and RNA polymerase subunit (Y in ultraviolet-irradiated Escherichia roli cells (see a preceding ...

    • Characterization of hybrid plasmids carrying individual ribosomal ribonucleic acid transcription units of Escherichia coli 

      Kenerley, M. E.; Morgan, E. A.; Post, L.; Lindahl, L.; Nomura, M. (American Society for Microbiology, 1977-12)
      We have screened the strains with ColE1 hybrid plasmids constructed by Clarke and Carbon (Cell 9:91-99, 1976) for the presence of ribosomal ribonucleic acid (rRNA) genes on the plasmids and identified 16 strains whose ...

    • A Multiple-Task Performance Battery Presented on a CRT 

      Emurian, Henry H. (Defense Technical Information Center, 1978-04-15)
      A minicomputer controlled battery of tasks is provided which can be presented individually or in combination on a single peripheral device, a cathode ray tube CRT, and which uses the accompanying keyboard as the operators ...

    • Municipal Cost Cutters 

      Norris, Donald; Municipal Technical Advisory Service (University of Tennessee Knoxville, 1979-06-01)
      The materials contained here describe three outstanding examples of municipal cost-cutting or productivity programs which have been implemented in Tennessee cities. They are curbside solid waste collection, in-house ...

    • Operon-specific regulation of ribosomal protein synthesis in Escherichia coli 

      Lindahl, L.; Zengel, J. M. (National Academy of Sciences, 1979-12)
      We have cloned a DNA fragment harboring the genes for ribosomal proteins L2, L4, and L23 on a plasmid vector that contains a lac operator and promoter. The cloned ribosomal protein genes are now under the control of lacOP. ...

    • High-efficiency, temperature-sensitive suppression of amber mutations in Escherichia coli 

      Zengel, J. M.; Lindahl, L. (American Society for Microbiology (ASM), 1981-01)
      We have constructed a high-copy-number plasmid carrying an allele of the supD gene (supD43,74). The plasmid conferred temperature-sensitive suppression of amber mutations. Strains carrying the plasmid exhibited 50 to 60% ...

    • Technical Bulletins: Automated and Semi-Automated Refuse Collection Technologies 

      Norris, Donald; Kirk, Frank E. (University of Tennessee Knoxville, 1981-01-09)
      This Technical Bulletin provides cost and productivity estimates for five different refuse collection technologies (including manual, semi-automated, and automated). The data shows that automated and semi-automated ...

    • Fluorescence of crayfish metarhodopsin studied in single rhabdoms 

      Cronin, T.W.; Goldsmith, T.H. (Elsevier Inc., 1981-09)
      Isolated photoreceptor organelles (rhabdoms) from eyes of crayfish (Procambarus. Orconectes) were examined on a microscope system designed for quantitative measurements of fluorescent. Although fully dark-adapted rhabdoms ...

    • Oversynthesis of elongation factors G and Tu in Escherichia coli 

      Zengel, J. M.; Lindahl, L. (American Society for Microbiology (ASM), 1982-02)
      We induced the oversynthesis of elongation factors Tu and G by using multicopy plasmids carrying the structural genes for these proteins under the control of the lac operator-promoter. We found no evidence that accumulation ...

    • Photosensitivity spectrum of crayfish rhodopsin measured using fluorescence of metarhodopsin 

      Cronin, T. W.; Goldsmith, T. H. (Rockefeller University Press, 1982-02-01)
      Discrepancies exist among spectral measurements of sensitivity of crayfish photoreceptors, their absorption in situ, and the number and absorption spectra of crayfish photopigments that are extracted by digitonin solutions. ...

    • Data Processing and Information Management in the City of Omaha, Nebraska: Analysis and Recommendations 

      Norris, Donald (University of Nebraska, Omaha, 1982-04)
      The city of Omaha has an extensive and complex data processing system. It is so large, in fact, that no single person inside or out of city government is fully knowledgeable about it. The system as it exists today cannot ...

    • Local Government Risk Management Handbook 

      Dotterweich, William W.; Norris, Donald; Sinclair, Robert L. (University of Tennessee Knoxville, 1982-04-01)
      This handbook originated in a series of risk management workshops developed by the authors in 1980 as part of a special project in local government technology innovation at the University of Tennessee's Municipal Technical ...

    • Regulation of nitrogen catabolic enzymes in Bacillus spp 

      Schreier, Harold J.; Smith, Thomas M.; Bernlohr, Robert W. (American Society for Microbiology, 1982-08)
      The levels of the inducible nitrogen catabolic enzymes arginase (L-arginine amidinohydrolase, EC 3.5.3.1) and alanine dehydrogenase (L-alanine:NAD+ oxidoreductase [deaminating], EC 1.4.1.1) from Bacillus licheniformis and ...

    • Cart-Based Automated and Semi-Automated Residential Refuse Collection 

      Norris, Donald (University of Nebraska, Omaha, 1983)
      A relatively few years ago, a new technology for residential refuse collection was introduced in urban America. This was the automated collection of residential refuse using standardized roll-out containers, or carts and ...

    • Geoprocessing for Grand Island and Hall County: Analysis and Recommendations 

      DiMartino, David R.; Fahrlander, Rebecca S.; Norris, Donald (University of Nebraska, Omaha, 1983-05)
      This report examined the feasibility of establishing an automated geobased data processing system for housing and community development data in Grand Island and Hall County.

    • City of Omaha Personnel Department: Analysis and Recommendations 

      Norris, Donald; Reed, B. J.; Webb, Vincent J. (University of Nebraska, Omaha, 1983-05)
      The Center for Applied Urban Research undertook an analysis of the city of Omaha personnel department during the winter and spring of 1983. This is a summary of the principal findings and recommendations of that analysis. ...