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  • American Physical Society  (4,433)
  • Periodicals Archive Online (PAO)  (3,824)
  • Blackwell Publishing Ltd  (2,338)
  • American Meteorological Society
  • Annual Reviews
  • 2015-2019
  • 1970-1974
  • 1965-1969  (11,613)
  • 1925-1929
  • 1969  (11,613)
Collection
Publisher
Years
  • 2015-2019
  • 1970-1974
  • 1965-1969  (11,613)
  • 1925-1929
Year
  • 101
    Electronic Resource
    Electronic Resource
    The Large-Scale Distribution of Hydrogen in the Galaxy (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 7 (1969), S. 39-66 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.07.090169.000351
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  • 102
    Electronic Resource
    Electronic Resource
    X Rays from the Sun (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 7 (1969), S. 121-148 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.07.090169.001005
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  • 103
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    Electronic Resource
    Radar Studies of Planetary Surfaces (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 7 (1969), S. 201-248 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.07.090169.001221
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  • 104
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    Electronic Resource
    The Interiors of the Planets (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 7 (1969), S. 177-200 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.07.090169.001141
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  • 105
    Electronic Resource
    Electronic Resource
    Motions of Planetary Atmospheres (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 7 (1969), S. 303-352 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.07.090169.001511
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  • 106
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    The Moon's Surface (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 7 (1969), S. 473-526 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.07.090169.002353
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  • 107
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    High-Resolution Observations of Radio Sources (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 7 (1969), S. 619-664 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.07.090169.003155
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  • 108
    Electronic Resource
    Electronic Resource
    Stratified Flows (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 1 (1969), S. 73-110 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.fl.01.010169.000445
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  • 109
    Electronic Resource
    Electronic Resource
    Hydrodynamic Noise (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 1 (1969), S. 197-222 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.fl.01.010169.001213
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  • 110
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    Shear-Flow Turbulence (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 1 (1969), S. 245-264 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.fl.01.010169.001333
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  • 111
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    Electronic Resource
    Surface-Tension-Driven Phenomena (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 1 (1969), S. 293-316 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.fl.01.010169.001453
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  • 112
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    The Transition From Continuum to Molecular Flow (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 1 (1969), S. 317-340 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
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    URL: http://dx.doi.org/10.1146/annurev.fl.01.010169.001533
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  • 113
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    Hydromechanics of Aquatic Animal Propulsion (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 1 (1969), S. 413-446 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.fl.01.010169.002213
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  • 114
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    Mutagenic Mechanisms (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 247-268 
    Details
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.001335
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  • 115
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    Electrohydrodynamics: A Review of the Role of Interfacial Shear Stresses (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 1 (1969), S. 111-146 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.fl.01.010169.000551
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  • 116
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    Blood Flow (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 1 (1969), S. 223-244 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.fl.01.010169.001255
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  • 117
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    Control of Gene Expression (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 181-216 
    Details
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.001145
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  • 118
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    Replication of the Bacterial Chromosome (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 233-246 
    Details
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.001313
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  • 119
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    Chromosomal Activities in Rhynchosciara and Other Sciaridae (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 425-450 
    Details
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.002233
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  • 120
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    Wheat Cytogenetics (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 451-468 
    Details
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.002315
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  • 121
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    Forest Genetics and Forest-Tree Breeding (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 469-494 
    Details
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.002345
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  • 122
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    Developmental Genetics (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 127-154 
    Details
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.001015
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  • 123
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    Chromosomal Rearrangements and Speciation in Animals (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 75-98 
    Details
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.000451
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  • 124
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    Experimental Polyploidy in Animals (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 99-126 
    Details
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.000531
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  • 125
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    Lithium and Beryllium in Stars (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 7 (1969), S. 99-120 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.07.090169.000531
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  • 126
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    Stellar Rotation (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 7 (1969), S. 665-684 
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    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.07.090169.003313
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  • 127
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    Physics of Massive Objects (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 7 (1969), S. 553-576 
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    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.07.090169.003005
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  • 128
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    Globulin Polymorphisms in Man (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 25-52 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.000325
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  • 129
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    Human Population Structure (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 53-74 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
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  • 130
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    Some Aspects of Normal and Abnormal Cell Surface Genetics (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 269-290 
    Details
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.001413
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  • 131
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    Genetics of Polysaccharide Biosynthesis (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 291-322 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.001451
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  • 132
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    Phage Morphogenesis (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 323-342 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.001543
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  • 133
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    Genetics of Single-Stranded DNA Bacteriophages (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 343-362 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
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    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.002015
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  • 134
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    The Genetic Control of Phage-Induced Enzymes (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 363-394 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
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    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.002051
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  • 135
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    Genetic Regulatory Mechanisms in the Fungi (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 395-424 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
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    URL: http://dx.doi.org/10.1146/annurev.ge.03.120169.002143
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  • 136
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    Evolution of Sex Chromosomes in Mammals (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 495-524 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
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  • 137
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    Ultraviolet-Induced Mutation and DNA Repair (1969)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 3 (1969), S. 525-552 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
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  • 138
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    METHODS OF LINEAR PROGRAMMING UNDER RISK (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    ISSN: 1467-999X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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    URL: http://dx.doi.org/10.1111/j.1467-999X.1969.tb00758.x
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  • 139
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    IMPACT OF FOREIGN EXCHANGE CONSTRAINTS ON FLUCTUATIONS AND GROWTH IN A DEVELOPING ECONOMY (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    ISSN: 1467-999X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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  • 140
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    A MODEL OF CAPITAL ACCUMULATION IN THE PUBLIC SECTOR (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    ISSN: 1467-999X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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  • 141
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    EXPECTATIONS, RISK AVERSION AND THE EXPECTATIONS THEORY: AN ATTEMPT AT CLARIFICATION (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    ISSN: 1467-999X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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  • 142
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    SOME NOTES ON EXPECTATIONS AND THE DEMAND FOR BOND (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    ISSN: 1467-999X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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  • 143
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    ON DEMAND AND SUPPLY FUNCTIONS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    ISSN: 1467-999X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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  • 144
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    MONETARY AND FISCAL POLICY IN AN OPEN ECONOMY: A HICKS-HANSEN ANALYSIS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    ISSN: 1467-999X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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    URL: http://dx.doi.org/10.1111/j.1467-999X.1969.tb00764.x
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  • 145
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    REMARKS ON THE AXIOM OF CONTINUITY AND THE CONNECTEDNESS OF INDIFFERENCE CLASSES (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    ISSN: 1467-999X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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    THE USE OF PRIOR INFORMATION IN ESTIMATING THE PARAMETERS OF ECONOMIC RELATIONSHIPS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    ISSN: 1467-999X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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    THE METHOD OF LIMITS IN THE THEORY OF INDEX-NUMBERS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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    AN OPTIMIZATION PRINCIPLE IN THE DESCRIPTIVE THEORY OF GAMES (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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    SPECIFICATION BIAS IN ESTIMATORS OF THE K-CLASS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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    A MODEL OF INDUCED INVENTION AND ECONOMIC GROWTH (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    ISSN: 1467-999X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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    EVALUATION OF INVESTMENT IN TRAINING (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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    MODELS OF OPTIMAL CAPACITY EXPANSION FOR THE FIRM: AN APPRAISAL (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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    THE STABILITY OF INTERREGIONAL COMPETITION AND THE PROGRAMMING APPROACH TO THE ANALYSIS OF SPATIAL TRADE EQUILIBRIA (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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    LEARNING BY DOING ONCE AGAIN (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
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    A NOTE ON TWO STAGE SECOND BEST (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
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    ON METHODS OF INSTRUMENTAL VARIABLES FOR ESTIMATION IN MODELS WITH ERRORS IN VARIABLES (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
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    LLOYD ON THE FALSIFIABILITY OF ECONOMIC THEORY (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    CETERIS PARIBUS, ETC. (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
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    A REJOINDER TO PROFESSOR LLOYD (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
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    Errata (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 21 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
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    Application of Hydrogeology to the Selection of Refuse Disposal Sites (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
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    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: New sanitary landfills are being opened each day to accommodate the rising volume of solid wastes. Selection of proper sites is a very major part of the disposal problem, particularly as they might affect the surrounding surface and ground water.Leachate production is inevitable in the humid East and throughout most of the country. Several alternatives are suggested that would result in the assimilation of migrating leachate into, the environment at tolerable limits or for its renovation prior to final discharge: Alternative 1—knowledge of existing hydrogeologic conditions which would favorably control the rate and direction of leachate migration; Alternative 2—engineering the landfill by construction of low-cost facilities to collect and treat leachate; and Alternative 3—construction of limited collection facilities to supplement natural conditions.It is suggested that more emphasis be given to hydrogeologic factors in the selection of refuse disposal sites to insure protection of surrounding surface and ground water. It is time to approach the waste disposal problem on a more sophisticated level by requiring test drilling, monitoring, and by giving consideration to the engineering of, landfills so that man's health and' environment are not jeopardized.
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    Casing Detector and Self-Potential Logger (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: A simple and rapid method of determining casing length and permeable zones in wells tapping bedrock can be useful to well drillers and hydrologists. A device consisting of a galvanometer, a reel of insulated wire, and a copper electrode locates the casing depth, changes of lithology, and permeable zones. The small-diameter electrode permits measurement through well-seal access ports avoiding the expensive and time-consuming procedure of removing the seal and drop pipes to measure casing depth with a magnet. The measured electromotive force changes rapidly when the electrode passes the end of casing. Thus, the depth of casing is easily determined from the length of wire payed out. Changes in electromotive force measured within the uncased part of a well frequently indicate permeable zones, thereby aiding in choice of the most efficient drop-pipe length, and also yielding useful information for hydrogeologic studies.
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    Analog-Digital Models of Stream-Aquifer Systems (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
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    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: The best features of analog and digital computers were combined to make a management model of a stream-aquifer system. The analog model provides a means for synthesizing, verifying, and summarizing aquifer properties; the digital model permits rapid calculation of the effects of water-management practices. Given specific management alternatives, a digital program can be written that will optimize operation plans of stream-aquifer systems. The techniques are demonstrated by application to a study of the Arkansas River valley in southeastern Colorado.
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    Measuring Underground-Explosion Effects on Water Levels in Surrounding Aquifers (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
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    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Underground detonations may produce observable effects in surrounding aquifers and wells. The nature and the duration of the effect at any observation point seem to depend on several factors such as the amount of energy released by the detonation, the geologic environment, the position of the buried explosive device in relation to the saturated zone, aquifer characteristics, and the distance from point of detonation. Precise measurement of these effects in wells presented numerous technical problems and resulted in the development of specialized techniques. Initially, these effects were observed by measuring the fluctuation of the free water surface in wells. The current technique employs high-resolution pressure transducers deep in the water column. Pneumatic packers may be used to restrict the movement of water into the well. Data are recorded on high-speed oscillographs.
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    The Ground-Water Situation in Ohio (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Present ground-water use in Ohio, approximately 650mgd (million gallons per day) amounts to about 5 percent of the water that enters the ground-water reservoirs. The largest ground-water supplies are developed where natural concentrations of water occur, chiefly in the watercourse aquifers, which consist of sand and gravel of glacial origin (outwash) in the valleys of the major streams. Other important aquifers are glacial outwash in upland areas and in the buried Teays Valley system, the limestone and dolomite aquifers in western Ohio, and sandstone and shale aquifers in the eastern half of the State.Future outlook is that more of the increasing water demand will be met from ground-water sources. Ground-water supplies will be developed at many new sites, and aquifers in areas already heavily pumped will be made to yield more water by the drilling of additional wells and recharging the aquifers artificially. Large quantities of ground water in storage, virtually unexploited, could be used for temporary low-flow augmentation of streams. Management of ground-water resources will be needed to help solve supply and distribution problems, and to resolve conflicts between users. Among future problems will be those arising from underground disposal of wastes, a practice which is expected to grow substantially from enforcement of water-quality standards for streams, set under the Federal Water Quality Act of 1965.
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    Volume of Aquifer Tested for Permeability During a One-Well Pumping Test (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Pumping test data from a single well were used to estimate aquifer volume affecting drawdown. After four days of pumping from a 240 feet thick welded tuff aquifer in southern Nevada, the volume of the wedge-shaped mass tested was estimated to be about 15.6 billion cubic feet (440 million cubic meters). The field coefficient of permeability of the aquifer is 275 gallons per day per square foot.
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    THE CHALLENGE OF GROUND WATER (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
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    Significance of Ground-Wafer Management Strategy— A Systems Approach (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: In Southern California's San Bernardino Valley a unique experiment is being performed by a local water district, the State government, and a private industry. Both the experiment and the organizational arrangements for getting the job done are the subject of this paper. The experiment is the application of systems analysis technology to water resource management. The organization is formed by a combination of contracts and cooperative agreement between private and government agencies. The result is a favorable environment for the development of effective water resource management strategies.The San Bernardino Valley is similar Co many areas in the world where water resource management reduces to the allocation of locally available ground water and potential imported water resources. This paper outlines in detail the analysis tools and long-range planning needs of effective ground-water management strategies.
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    Effects of Mine Drainage on Ground Water (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
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    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Coal mining in Appalachia has degraded both the surface and ground water. During mining, ground water is drained from the rocks and the pyrite associated with the coal beds is exposed to air. Oxidation of the pyrite produces high iron ana sulfate concentration and a low pH in the water. Some of this polluted water flows directly into nearby streams and some moves into the ground-water system. When the latter occurs, the iron concentration can increase up to several hundred mg/1 and the sulfates to over one thousand mg/1. Unfortunately, in most cases the cessation of mining does not stop the ground-water pollution, and it can take many decades before the ground water again becomes usable.A detailed study of the effects of coal mining on ground water was conducted in the Toms Run drainage basin in northwestern Pennsylvania where coal mining and oil and gas well drilling have occurred for almost 100 years. The rocks of Mississippian and Pennsylvanian Age produce a multiaquifer system–three major aquifers separated by siltstone and shale beds (aquitatdes). The oil and gas wells act as a conduit system permitting acid mine drainage to move downward from the strip mines to underlying aquifers. It then moves laterally down dip and discharges as springs. The acid mine drainage adversely affects the ground-water quality by increasing the iron and sulfate content of the water especially in the vicinity of the strip mines.
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    Preliminary Field Studies Using Earth Resistivity Measurements for Delineating Zones of Contaminated Ground Water (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
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    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: The measure of earth resistivity is a possible means of detecting and outlining zones of ground-water contamination where a resistivity contrast exists between contaminated and unconcaminated ground water.As a preliminary evaluation of the use of electrical resistivity for defining zones of contaminated ground water, five sites on Long Island and three sites in western Texas were examined. The surveys at three of the Long Island sites and at one of the western Texas sites were at least partially successful in their objectives. The lack of success at the other sites is attributed to the particular physical conditions that existed.Further effort toward developing electrical resistivity as a method for evaluating variations in ground-water quality is encouraged.
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    Ground-Water Training in Barcelona, Spain (1969)
    Oxford, UK : Blackwell Publishing Ltd
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Water-supply problems in Spain have become acute during the past decade owing to expansion of industry, construction of modern houses and apartments, and development of a tourist industry. A training program in ground-water hydrology and geology was established three years ago in Barcelona to help supply personnel who would be able to cope with these problems. Training is also given to foreign nationals, a total of nine countries having been represented to date. Part of the success of the school rests on the fact that a large variety of ground-water problems exist in the vicinity of Barcelona. Students obtain a firsthand knowledge of sea-water intrusion, aquifer-testing techniques, agricultural and municipal degradation of water quality, and drilling and exploration techniques within a wide variety of rock types.
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    Guest Editorial—Methods of Analysis of Pumping Test Data by T. N. Narasimhan — March-April, 1969 (1969)
    Oxford, UK : Blackwell Publishing Ltd
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
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    Field Use of Orifice Meters (1969)
    Oxford, UK : Blackwell Publishing Ltd
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    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: A well-designed and calibrated orifice meter is an accurate and inexpensive measuring device for flow. Endline orifices can be calibrated at work sites by solving an equation that interrelates easily measured dimensions of the orifice and outflow.
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    Effects of Large-Scale Mining Withdrawals of Ground Water (1969)
    Oxford, UK : Blackwell Publishing Ltd
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    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Expanding water requirements during recent years have intensified development of the productive sedimentary aquifers of the North Carolina Coastal Plain. The effects of this development emphasize the local and regional limitations of the aquifer system and the need for an effective management program.Withdrawal of about 60 million gallons per day from the Castle Hayne limestone, the most productive unit of the principal artesian aquifer of the area, began in July 1965 at a phosphate mine adjacent to the Pamlico River in Beaufort County. Within a few months, the artesian head was lowered below sea level in an area of about 800 square miles, and to more than 100 feet below sea level in the immediate vicinity of pumping. Under these conditions the aquifer became vulnerable to encroachment of saline water from (1) areas of natural occurrence of brackish water in the limestone member of the aquifer; (2) leakage of brackish surface water through the confining beds; and (3) vertical movement of brackish water from the underlying sand member of the aquifer.The dramatic and “overnight” effects of the large withdrawals at the mine site and the threat of damage to the aquifer created sufficient public concern so that legislation was passed by the 1967 General Assembly, giving the Board of Water and Air Resources authority to regulate ground-water withdrawals as needed to protect the aquifers of the State. An adequate management program can be accomplished that will not only protect the aquifer but will improve the development potential. The development of such a management program requires a thorough knowledge of the hydrology of the aquifer system, the objective of studies in progress. The implementation of the program will require the support of an informed public.
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    A Simplified Technique for Well-Field Design (1969)
    Oxford, UK : Blackwell Publishing Ltd
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    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: The planned development of an individual water supply from a group of wells must take into consideration several controllable and uncontrollable factors. The uncontrollable factors may include aquifer coefficients of transmissibility and storage, aquifer boundaries, static water level, aquifer depth, recharge capabilities, and competing users. The controllable factors often include the acreage allocated to ground-water development, well locations, and pumping rates. Well-field design is oriented mainly toward proper selection of the controllable factors.Water requirements, the cost of water and the life of the well field are related to limitations of acreage, draw-down of water level, and investment in pumping and transmission facilities. All of these factors, in turn, are influenced by the location of individual wells with respect to one another.Well-field design calculations involve the combined interference of water level drawdown among the various wells in the field. Repeated computational trials for various numbers of wells and well spacings may be required. Calculations using conventional methods are, in most cases, rather time-consuming.The final design decision can be approached quickly if it is assumed that the wells have regular spacing. Through the use of a simple formula and table developed in this paper, a given well-field problem can be calculated in a few minutes with a slide rule. When well spacing deviates appreciably from the regular spacing assumed, the final design calculations should be made with computer techniques.
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    Microbial Problems in Ground Water (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
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    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: This article contains a summary of a few disease out-breaks caused by ground-water contamination, and the difficulties in designing and monitoring for effective quality control. There is a discussion of problems associated with large basin recharge with treated sewage. For instance, do we have adequate microbial indicators? Or will the nitrate concentration build up if there is a semiclosed circuit involved? Chlorination of well water withdrawn for domestic use is advocated as good insurance for microbial control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1969.tb01282.x
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    A Design Method for Deep Well Dewatering Installations (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: A new design method for deep well dewatering systems is given. The method analyses three dimensional flow to the multiwell systems by considering the two end points to the initial fast phase of water table fall. The method is applied to a dewatering case history and proves to be successful.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1969.tb01274.x
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  • 178
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    SCIENCE INFORMATION AND ADVICE FOR THE CONGRESS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1969.tb01261.x
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  • 179
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    Aquifer Storage Determination (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 7 (1969), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: A new method of determining aquifer storage coefficients has been developed for use in operations involving ground-water recharge through wells. This work evolved from a research project dealing with the fate of DDT and nitrate in the Ogallala Aquifer in the High Plains of Texas.A tritium tracer was used to determine the detention time of the recharge water passing through a saturated volume of the aquifer. Tracer behavior was formulated ‘mathematically and verified by model simulation. The formulations provide a graphical solution for the detention time from which the storage coefficient may be calculated.The method will have immediate value in establishing storage coefficients of aquifers, such as the Ogallala, where plans for importation and distribution of supplemental water involve utilization of underground storage. Regarding water-table conditions, this method promises to produce more reliable storage values than have been obtained from pumping tests.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1969.tb01263.x
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  • 180
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    Enzyme-Catalyzed Reactions as Influenced by Inert Gases at High Pressures (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: —The activities of tyrosinase, invertase, trypsin and chymotrypsin were studied after exposure to one or more of the following high-pressure inert gases: N2O at 600 psig or N2 or Ar each at 5000 psig. Exposure to high-pressure nitrogen or argon failed to significantly inhibit the rate of tyrosinase activity in fluid systems. However, the rates of tyrosinase-catalyzed reactions in shell-cast gelatin gels were significantly depressed by exposure to high-pressure nitrogen, and even more so by high-pressure nitrous oxide. This inhibition proved to be oxygen dependent and reversible. Pressurization experiments with invertase, trypsin and chymotrypsin indicated that high-pressure N2O did not significantly inhibit these enzymes. This lends support to the hypothesis that high-pressure inert gases inhibited tyrosinase activity in nonfluid systems by decreasing the availability of oxygen, rather than by physically altering the enzyme. It must be concluded that there is little hope that the enzymes in food systems can be effectively inhibited by brief exposure to inert gases at pressures of 5000 psig or less.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb10368.x
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  • 181
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    Molecular Properties of Post-Mortem Muscle. 7. Changes in Nonprotein Nitrogen and Free Amino Acids of Bovine Muscle (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY– Proteolysis and its relationship to tenderness were studied by measuring nonprotein nitrogen (NPN), free amino groups, and shear resistance during post-mortem aging of bovine muscle. Both NPN and free amino groups increased during post-mortem aging, indicating some degradation of proteins and/or peptides. However, neither the increase in NPN nor free amino groups was related to post-mortem tenderization since these quantities increased only after most of the improvement in tenderness had occurred. Much of the increase in NPN or free amino groups may originate from degradation of sarcoplasmic proteins or peptides. It is suggested that weakening or breaks at crucial points in the sarcomere, such as at the junction of the Z-line with the thin filaments, occur within the first 48-72 hr post-mortem and that this weakening or cleavage is responsible for tenderization. Cathepsin D may be responsible for this weakening but most of the available evidence is against proteolysis as the primary cause of post-mortem tenderization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb00918.x
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  • 182
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    Tannins of Grain Sorghum: Luteoforol (Leucoluteolinidin), 3′,4,4′,5,7-Pentahydroxyflavan (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY– The principal tannin of sorghum is a leuco-anthocyanin yielding luteolinidin (3′,4′,5,7-tetrahydroxy-flavylium) when heated with mineral acid. The precursor, luteoforol, has most of the properties of 3′,4,4′,5,7-penta-hydroxyflavan prepared by reduction of eriodictyol. Luteoforol, when treated with concentrated mineral acid in the cold, gives a purple color with Λmax550nm. A method for the determination of luteoforol in sorghum, based on this property, is described. The results with a number of varieties of sorghum are compared with those obtained by the AOAC Folin-Denis method. The contribution of luteoforol to the “tannin” so determined varies from 1 to 〈 25%. Except for one sample of Kaffir corn, which contained leucocyanidin as well as luteoforol, no other tannins were detected. The “tannin” content varied widely, (from 0.05 to 0.67% as tannic acid), a white-skinned variety having the least. The uniformity of commercial samples can be rapidly evaluated by single-grain determinations of luteoforol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb00919.x
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  • 183
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    The Detection and Enumeration of Clostridium perfrinqens in Foods (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
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    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY— A method that uses SPS agar and incorporates an improved egg yolk agar and nitrate motility medium has been developed for the enumeration and confirmation of vegetative cells and/or spores of Clostridium perfringens in foods. The method is based upon several diagnostic criteria and can be completed within 48 hr.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb00921.x
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  • 184
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    Measurement of the Relative Sweetness of Selected Sweeteners and Sweetener Mixtures (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: –The relative sweetness of sugars and sugar mixtures was studied. In addition to the simple sugars (sucrose, dextrose and fructose), the amino acids, glycine and D, L-alanine, and the synthetic sweeteners, calcium cyclamate and sodium saccharin, were studied. Using the method of magnitude estimation, considerable data were obtained about relative sweetness over a reasonably wide concentration range. Only two sessions per subject were required to obtain meaningful results. Relative sweetness of the sugars was found to increase with increasing concentration—a pattern quite similar for all the sugars. Changing the reference or reference concentration resulted in shifts in the relative sweetness values for a particular sugar; however, these changes were consistent at all concentrations tested. Slope values for the individual sugars were in good agreement with previously reported results. The individual subjects responses showed a consistent pattern throughout the 10-month period.Synergistic effects, as much as 20 to 30%, were noted in several sugar mixture combinations but not all concentrations. The data support the concept that there are optimal mixture combinations. The potential applications of these observations are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb00922.x
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  • 185
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    Deterioration of Fresh-Water Whitefish Muscle During Frozen Storage at −10°C (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY— Organoleptic and chemical deterioration of freshwater whitefish muscle frozen at −10°C for periods up to 16 weeks was assessed. As frozen storage of muscle progressed, the toughness and rancidity of baked muscle increased. The solubility of the myofibrillar protein fraction, “actomyosin,” dropped from about 72 to 22% over the 16 week storage period of whitefish muscle. No change in the solubility of sarcoplasmic protein in frozen stored muscle was observed. However, with polyacrylamide disc electrophoresis, two new sarcoplasmic protein bands were detected after 16 weeks of storage. With storage of frozen muscle, water-binding capacity diminished. Although the total lipid and cholesterol contents of muscle remained constant throughout frozen storage, the phospholipid content decreased as the free fatty acid content increased. Oxidative deterioration of lipid in frozen muscle was estimated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb14350.x
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  • 186
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    Detection of Quality Changes in Freeze-Dried Beef by Measurement of the Sorption Isobar Hysteresis (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY— Experiments with cooked, freeze-dried beef support previous evidence that changes in its physical and chemical properties are reflected in its water sorption characteristics. As a new approach, sorption isobars and their hysteresis were studied. In the reported temperature and pressure range, a decrease in the sorption capacity and in the area of the hysteresis loop was observed after 1 yr of storage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb14353.x
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  • 187
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    Palatability and Selected Related Characteristics of Three Types of Roasted Porcine Muscle (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
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    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: A completely randomized design was followed to evaluate 48 roasts posterior third of the loin) from 12 Duroc and 12 Poland China barrows. Antemortem treatment of pigs produced “normal”, pale-soft-exudative (PSE) and dark-firm-dry (DFD) longissimus dorsi (LD) muscle. Meat was roasted at 350°F to an internal temperature of 167°F and evaluated by organoleptic and selected objective measurements. There was no significant organoleptic preference for one type (“normal”, PSE, DFD) of LD. Also, differences among types of muscle were not significant for roasting time, volume of press fluid or total moisture (press method); whereas roasting losses, total moisture (Brabender) and pH of LD were affected significantly by type of muscle. In general, there were significant (P 〈 0.05) differences between PSE and DFD muscle, and between “normal” and DFD muscle. DFD muscle exhibited the smallest roasting loss and greatest total moisture, whereas PSE muscle had the greatest roasting loss and least total moisture. DFD muscle rated highest in pH and lowest in Warner-Bratzler shear value. LD from Durocs was more tender (P 〈 0.05), had a higher (P 〈 0.05) pH, and contained less (P 〈 0.01) total moisture (Brabender) than LD from Poland Chinas. Cooking losses were greater (P 〈 0.05) for roasts from Durocs than for roasts from Poland Chinas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12066.x
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  • 188
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    Bisulfite Effect on the Chemistry and Activity of Horseradish Peroxidase (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
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    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: Bisulfite retarded the inactivaton of horseradish peroxidase by weak acids. Spectral analysis indicated that the retardation was accomplished by the stabilization of the linkage between the iron containing prosthetic group and the protein. Cyanide, azide and fluoride, which form reversible complexes with peroxidase iron, exerted a similar effect; thus, it is inferred that bisulfite also forms a complex with peroxidase iron. A kinetic method was used to calculate a dissociation constant of 0.2M for the bisulfite peroxidase complex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12070.x
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  • 189
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    Vapor Analysis of the Production by Banana Fruit of Certain Volatile Constituents (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: Direct gas chromatographic vapor analyses were utilized to determine whether banana slices at different stages of ripeness in an in vitro system produced iso-amyl acetate and iso-amyl alcohol, known banana aroma constituents; and whether a precursor-product relationship could be observed between these compounds and L-leucine. Production of iso-amyl acetate by unripe slices was demonstrated based on experiments with metabolic inhibitors. The behavior of ripe and overripe slices was inconclusive since the vapor concentration of the acetate remained constant. The vapor concentration of iso-amyl alcohol was essentially unchanged at all ripeness stages. Investigations with L-leucine-U-14C showed conclusively that leucine was a precursor and that both compounds were continually produced at all ripeness stages. The interpretation of direct vapor analyses over respiring fruit is considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12072.x
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  • 190
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    Comparison of Survivor Curves of Bacillus subtilis Spores Subjected to Wet and Dry Heat (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: Survivor curves for spores of Bacillus subtilis were determined in wet and dry heat over a wide range of temperatures. Wet heat tests were determined using a thermoresistometer and thermal death time cans. Dry heat tests were conducted in a closed system using thermal death time cans. There were major differences in the shape of the wet vs. dry heat survivor curves. Wet heat resulted in convex curves at low temperatures, but a straight line at higher temperature. Dry heat resulted in concave curves at all temperatures. These results suggest that physiological differences exist between wet and dry heat destruction of bacteria. Several possible explanations for the difference in the shape of the survivor curves were discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12075.x
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  • 191
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    Epimysial Connective Tissue Scores as Related to Beef Tenderness (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
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    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: Steaks from 24 bulls 20 months old, 89 bulls 14 months old and 109 steers 20 months old were used to relate thickness of epimysial tissue to the amount of intra-muscular connective tissue, and to correlate these factors with Warner-Bratzler shear values in muscles cooked to 140 or 160°F. The thickest portion of the LD epimysium was greater in lighter weight bulls than it was in heavier steers. Epimysial extension and thickness varied according to muscle location but at the same location it was not significantly different in steaks from tough versus tender steers. Differences in hydroxyproline content and connective tissue of steers and young bulls were small but older bulls had slightly greater amounts of both. The LD epimysium was tougher in older bulls than in younger bulls.Shear values of epimysial tissue varied considerably within animals of the same age, especially when roasted to 140°F. Most connective tissue differences due to line of cattle were small. Correlations within groups of cattle between thickness of epimysial tissues of different muscles or between epimysial thickness and intramuscular connective tissues were low. With few exceptions neither hydroxyproline, epimysial thickness nor connective tissue scores were significantly related to shear force of muscle or shear force of epimysial tissue itself. Correlations between shear force of the LD and BF muscles were not significant (P 〈 0.05) in animals of the same age. There was a tenderness interaction between age of animal and type of muscle which suggested that collagen gelatinization occurred at a faster rate in the LD than in the BF as age increased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12074.x
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  • 192
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    Polygalacturonase Content of Dates and Its Relation to Maturity and Softness (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
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    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: The changes in polygalacturonase (PG) activity during ripening and the relationship between its activity and the quality of Deglet Noor dates were studied. PG activity, which was virtually absent at the green stage, began to develop as maturity progressed. The greatest part of the development occurred at the late red stage and activity reached its maximum when the fruits commenced softening. Among the four grades of dates used in this study the activity was highest with natural, followed by waxy, number 1 dry and number 2 dry grades. The dates contained 0.9-1.3 units of PG per g of fresh tissue. The results of chemical and physical analyses related to the texture are also reported.
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    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12078.x
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  • 193
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    Salt and Aging Time Effects on the Viability of Trichinella spiralis in Heavy Dry-cured Hams and Shoulders (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: 28 pigs weighing approximately 100 lb were dosed with 10,000 to 15,000 excysted trichina larvae, grown to 285 lb and sacrificed. Fresh lean samples from one ham and shoulder per carcass were digested in a pepsine-HCI solution and microscopically examined to determine infection rates. 24 of the more heavily infected hams and shoulders then were selected for further observations. The hams and shoulders were dry-cured for 2 days per lb, using an 8% cure applied in 3 equal applications at 5-day intervals. The cure contained salt, sugar, potassium nitrate and sodium nitrite. After curing, the meat was placed in salt equalization for 30 days, smoked for 24 hr at 100°F and aged at 75°F until termination of the study. Cored lean samples were taken from 8 hams and shoulders at weekly intervals after salt equalization and analyzed for salt concentrations and viability. Viable trichinae persisted throughout curing, salt equalization, smoking and 2 weeks of aging. Samples taken from hams and shoulders after 3 weeks of aging were found to be free of any live trichinae. Similar lean samples were taken at this time and force fed to rats for 5 days. After 8 weeks on a commercial ration the rats were sacrificed, artificially digested and examined. No trichina larvae could be recovered.
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    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12079.x
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  • 194
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    Relationship between Meat Swelling, Viscosity, Extract-release Volume, and Water-holding Capacity in Evaluating Beef Microbiol Quality (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: This research was undertaken in order to determine the relationship between the phenomena of meat swelling (SW), viscosity (η), extract-release volume (ERV), and wafer-holding capacity (WHC) as simple and rapid techniques of determining beef microbiol qualify. These techniques were compared by analyzing beef samples held from freshness to spoilage at refrigerator temperatures, fresh beef homogenized with urea, and beef adjusted to different pH values. In addition, irradiated fresh ground beef samples were inoculated with the normal flora of spoiled beef and analyzed similarly.With the microbially spoiled meats the highest degree of correlation occurred between SW and ERV, followed by ERV & WHC, SW & η, η & ERV and SW & WHC. These findings indicate that ERV and SW are quite similar and equally reliable in determining meat microbiol qualify while the relationships between η and ERV, and η & WHC were of lower orders of significance.When fresh beef was homogenized with urea at levels between 0.5 and 5M, η correlated best with SW followed by ERV & η, and ERV & SW. Over the pH range 3-11, SW and ERV correlated best followed rather closely by SW and η, and ERV & η.
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    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12080.x
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  • 195
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    Autoxidation of Methyl Linoleate in Freeze-Dried Model Systems. 4. Effects of Metals and of Histidine in the Absence of Water (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
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    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: Autoxidation of methyl linoleate dispersed on filter paper was studied in the dry state in the presence and absence of additives. Oxidation was followed volumetrically and by measuring the increase in conjugated dienes. Evaluation of the rate data indicates that added histidine is antioxidant in the very early stages of the oxidation and becomes prooxidant in the later stages. Increasing the concentration of histidine promoted an earlier appearance of its prooxidant effect. Cobalt chloride and manganese sulfate had a pronounced catalytic effect on the oxidation reaction in the model systems buffered to a high (8.0 and 9.0) but not to a low (4.0) pH. Histidine increased the catalytic activity of manganese but eliminated that of cobalt. Thin-layer chromatography showed that conditions under which histidine increased the prooxidant effect of manganese also resulted in the appearance of some decomposition products of histidine. These decomposition products may have catalytic activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12083.x
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  • 196
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    Composition of Montmorency Cherry Essence. 2. High-boiling Components (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
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    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: Volatile components of commercial Montmorency cherry essence boiling above ethanol were extracted from the essence by ether and concentrated by distillation. This concentrate was fractionated by gas chromatography. Individual components were identified using the methods of functional group analysis, gas co-chromatography, infrared analysis and mass spectrometry. The concentrations of the components in the original essence were estimated. The major components identified were n-propyl alcohol, isobutyl alcohol, isoamyl alcohol, and benzaldehyde. Minor components identified include n-butanol, n-hexanol, a hexenol, benzyl alcohol, α-terpineol, furfural, isoprene, myrcene and numerous higher terpenes, methyl benzoate, ethyl benzoate, benzyl acetate, ethyl caprylate, ethyl caprate, n-propyl benzoate, isobutyl benzoate, isoamyl benzoate and di-butyl phthalate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12084.x
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    Studies on Some Physical Properties of Bovine Skeletal Muscle (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: The physical properties of the major muscles of the round from 30 crossbred beef and 20 straightbred dairy carcasses were studied. Sex, sire and body type were related to these properties. Generally, the steers had longer, heavier and lighter-colored muscles than the heifers. A negative relationship was noted between the specific gravity and reflectance values for the crossbred muscles. The semimembranosus muscle was heaviest and accounted for the highest percent of the rough round in certain beef and dairy sire groups. In the dairy cattle, the weight of the biceps femoris muscle was also affected by sire. Heritability estimates indicated that the weight of the semimembranosus was highly heritable and its percent of the rough round moderately heritable in both beef and dairy cattle. The dairy b. femoris weight and circumference were also moderately heritable. Color reflectance, specific gravity, pH, length and circumference/length ratio were not observed to be heritable physical properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12088.x
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  • 198
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    Thermochemical Factors Influencing the Death Kinetics of Spores of Clostridium botulinum 62 A (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: Death kinetics of spores of Clostridium botulinum, Type A, strain 62, were studied at sterilant gas temperatures in the range of 40°C (104°F) to 70°C (158°F). Hygroscopic carriers in the form of small discs of filter paper were used. The sterilant gas used was a mixture of dichlorodifluoromethane and ethylene oxide (88 and 12% by weight respectively). Pressures in the exposure atmosphere were adjusted to obtain an ethylene oxide concentration of 700 mg per liter at all temperatures. It was shown by gas-chromatographic analysis that an actual concentration of 700 ± 20 mg per liter was maintained at all exposure temperatures during all exposure periods. The effect of various moisture levels on spore death kinetics was also studied. The relative humidities employed in both the preconditioning and exposure of spores were 3, 23, 33, 53 and 73%, respectively. Thermochemical resistance parameters, D and z, were calculated as the reciprocals of the slopes of the survivor curves and thermochemical destruction time curves, respectively. Of the various environmental moisture levels studied, a preconditioning and exposure relative humidity of 3% for destruction of C. botulinum spores taken from an aqueous suspension, was found to be most effective. This effect held for all temperatures studied. Over the range studied, temperature was seen to have the greatest effect at 3% relative humidity (RH), second greatest at 33% and least effect at 73%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12089.x
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  • 199
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    Cooking Methods and Heating Effects on DDT in Chicken Tissues (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: DDT incorporated into chicken tissues during the growing period was reduced in concentration during cooking by either baking, frying, or steaming and during heating of tissues in closed containers for varying lengths of time. DDT was converted to DDD in each of the treatments, but the concentration of DDE was not altered significantly. Total losses of residue were greater when tissues were fried or steamed than when the samples were either baked or heated in closed containers. Losses of residue from chicken tissue occurred primarily through leaching of fat during the cooking process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12091.x
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  • 200
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    The Effect of pH-Temperature Treatments on the Calcium Accumulating Ability of Purified Sarcoplasmic Reticulum (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 34 (1969), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: SUMMARY: Pig sarcoplasmic reticulum fragments obtained from the longissimus dorsi muscle at 0- and 24-hours post-mortem were purified by salt extraction and density gradient centrifugation. The calcium uptake activity of 0-hour purified preparations was more than 20-fold higher than that from 24-hr old muscles, but there was no significant difference between fractions for calcium activated ATPase activities. When observed electron microscopically after negative staining, the ultrastructures of the 0. and 24-hour membrane fragments were found to be essentially identical. Incubation of isolated sacroplasmic reticulum fragments at pH 7.2 and 37°C or pH 5.6 and 0°C caused negligible inhibitoin of their calcium accumulating ability. However, treatment at pH 5.6 and 37°C for 1 hr almost completely abolished the sarcoplasmic reticulum calcium uptake. Thus it appears that low muscle pH and high temperature may be responsible for the inactivation of the calcium accumulating ability of the sarcoplasmic reticulum that occurs in situ.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1969.tb12109.x
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