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  • Blackwell Publishing Ltd  (632)
  • American Association for the Advancement of Science (AAAS)  (364)
  • Annual Reviews
  • 1980-1984
  • 1975-1979  (1,186)
  • 1965-1969
  • 1935-1939
  • 1978  (801)
  • 1976  (385)
Collection
Keywords
Publisher
Years
  • 1980-1984
  • 1975-1979  (1,186)
  • 1965-1969
  • 1935-1939
Year
  • 1
    Electronic Resource
    Electronic Resource
    Radionuclide dating of the recent sediments of Blelham Tarn (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 6 (1976), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Lake sediments of the last 1000 years provide a unique record of environmental changes. Methods of dating this record are reviewed and discussed. Sediments of the last 20 years, which are of particular biological significance because of their record of man-made changes in lakes (including enrichment and pollution) have been dated successfully by the distribution within them of the fallout product 137Cs, present in the atmosphere since 1954 and reaching a peak of supply in 1963. The structured pattern shown by the curve for 137Cs concentration in most sediments investigated indicates that faunal mixing of the surface muds does not destroy the vertical stratification of the sediment profile.Sediments up to 120 years old have been dated by a lead isotope technique, and the results of this proved consistent with both 137Cs dating and with palaeomagnetic dating where this was possible.Theoretical considerations of the application of radiocarbon dating to organic material of 18th and 19th century date are reviewed.Results of application of these radionuclide techniques to the sediments of a small lake, Blelham Tarn, near Windermere, are presented. Evidence from 137Cs and 210Pb dating of profiles from several different positions within the lake shows that the depth of the annual increment to the sediments varies by a factor of × 2 from place to place. The concentration within the sediment of chemical and biological variables shows no significant variation from one position to another; therefore calculated values for amounts of each variable included within unit area of the annual increment depend primarily on the thickness of this at the site chosen, and so cannot be directly related to the rates of supply of, for example, pollen grains or total organic matter, and so to rates of productivity.Results from nine 14C dates on material 400–1000 years old, when correlated with analyses for pollen and sediment composition, demonstrate the profound effects of agricultural practices in the catchment (assumed to be deforestation and ploughing) in disturbing the orderly transfer to lake sediments of material eroded from the catchment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1976.tb01617.x
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  • 2
    Electronic Resource
    Electronic Resource
    EFFECTS OF ULTRASONIC TREATMENT ON BINDING STRENGTH IN CURED HAM ROLLS (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 43 (1978), 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 purpose of the study was to determine the effects of ultrasonic treatment on muscle microstructure, breaking strength, cook yield, and protein extractability of ground cured ham rolls. A miniaturized system was designed which subjected ground ham to slow mixing and ultrasonic treatment. The samples were mixed for various times up to 2 hr, then stuffed into stoppered glass tubes for cooking in 80°C water bath. Controls were treated similarly, but without ultrasonic treatment. Results showed that ultrasound caused changes in muscle microstructure, increased breaking strength as measured in g/cm2 on an Instron Universal Testing Machine, decreased cooking loss and increased the extractability of salt-soluble protein. Ultrasound had no effect on the extractability of water-soluble protein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1978.tb02442.x
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  • 3
    Electronic Resource
    Electronic Resource
    A LARGE GLYCOPROTEIN LOST FROM THE SURFACES OF TRANSFORMED CELLS (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 312 (1978), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1978.tb16811.x
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  • 4
    Electronic Resource
    Electronic Resource
    IMMUNOCHEMOTHERAPY OF LUNG CANCER (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 277 (1976), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1976.tb41720.x
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  • 5
    Electronic Resource
    Electronic Resource
    PGM3 LOCUS AND ITS GENETIC POLYMORPHISM IN LEUCOCYTES OF GOATS (1976)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 3 (1976), S. 0 
    Details
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: PGM3 activity was investigated in 150 ‘Boerbok’ goats and 132 Angora goats by means of horizontal starch gel electrophoresis. In ‘Boerbok’ goats no polymorphism was found. In Angora goats three different phenotypes have been recognized: F, S, and FS. The results suggest the occurrence of two common alleles: PGM3-F and PGM3-S at an autosomal locus with frequencies of 0.6176 and 0.3824, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-313X.1976.tb00586.x
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  • 6
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    Brain tumors in owl monkeys inoculated with a human polyomavirus (JC virus) (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-09-29
    Description: Owl monkeys were inoculated intracerebrally, subcutaneously, and intravenously with JC, BK, or SV40 virus. Two of four adult owl monkeys inoculated with JC virus, a human polyomavirus, developed brain tumors at 16 and 25 months after inoculation, respectively. A grade 3 to grade 4 astrocytoma (resembling a human glioblastoma multiforme) was found in the left cerebral hemisphere and brainstem of one monkey. The second monkey developed a malignant tumor in the left cerebral hemisphere containing both glial and neuronal cell types. Impression smears prepared from unfixed tissue of this tumor showed cells that contained polyomavirus T antigen. Virion antigens were not detected. Tumor cells cultured in vitro also contained T antigen but were negative for virion antigen. Infectious virus was not isolated from extracts of this tumor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉London, W T -- Houff, S A -- Madden, D L -- Fuccillo, D A -- Gravell, M -- Wallen, W C -- Palmer, A E -- Sever, J L -- Padgett, B L -- Walker, D L -- ZuRhein, G M -- Ohashi, T -- New York, N.Y. -- Science. 1978 Sep 29;201(4362):1246-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/211583" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies, Viral/analysis ; Antigens, Viral/analysis ; Brain Neoplasms/*etiology/pathology ; Immunosuppression ; Neoplasms, Experimental/etiology/pathology ; *Polyomavirus/immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    PAPER CURRENT
  • 7
    Electronic Resource
    Electronic Resource
    A mathematical model to study forage conservation methods (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 33 (1978), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A mathematical model which simulates a single-cut forage conservation system is described. It was designed to investigate the effect of machine performance on the nutrient content of conserved forage but its scope is much wider, so that the effects of such aspects as crop growth characteristics, climatic differences and management policy can be assessed. An example of the use of the model to determine the value of chemical additives to high moisture content hay is described in detail. Various uses of the model are discussed and some of its limitations are shown to be caused by a lack of data on factors determining dry matter losses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1978.tb00829.x
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  • 8
    Electronic Resource
    Electronic Resource
    Nitrogen studies in Lolium perenne grown for seed. II. Timing of nitrogen application (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 33 (1978), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The effects of applying nitrogen at different growth stages to S24 and S23 perennial ryegrass grown for seed were investigated in a series of field experiments from 1971 to 1976. These varieties of ryegrass were found to be insensitive to timing of nitrogen application from apex initiation to the stage when ears first emerged. However, if nitrogen application was delayed until about 30% or more of the ears had emerged, yields were lower compared with earlier applications, this effect being significant when nitrogen was delayed until 70–80% ear emergence because of a decrease in both numbers of fertile tillers and number of seeds per unit area. No advantages were found for splitting nitrogen applications between apex initiation and ear emergence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1978.tb00815.x
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  • 9
    Electronic Resource
    Electronic Resource
    Comparison of two in vitro procedures using rumen liquor-pepsin or pepsin-cellulase for prediction of forage digestibility (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 33 (1978), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Seventy-three samples of grass and legume herbage of known in vivo digestibility were used to compare an in vitro procedure comprising incubation with pepsin followed by cellulase (Jones and Hayward, 1975) with the Tilley and Terry (1963) procedure using rumen liquor followed by pepsin. The results obtained using the pepsin-cellulase method proved to be highly repeatable. On the basis of the residual standard deviation of the regression of in vivo dry matter digestibility (DMD) on dry matter digested in vitro (g/100 g DM), the pepsin-cellulase method was shown to be only slightly less accurate than the rumen liquor-pepsin method for combinations of both primary growth and regrowth of grasses (r.s.d. ±1.80 and ±1.46 respectively). However, the pepsin-cellulase method was noticeably less accurate than the rumen liquor-pepsin method when used on legume herbages (r.s.d. ±3.17 and ±1.91) or on grass and legume herbages combined (r.s.d. ±3.80 and ±1.60). For the rumen liquor-pepsin method one regression equation predicting DMD having the form, Y= 1.02 X− 0.41, was permissible. For the pepsin-cellulase method separate regression equations were necessary for grasses (species and growth stages combined) having the form, Y = 0.56 X+ 34.7, and for each legume species. It was concluded that the pepsin cellulase method was of value for grass samples, and, within species, for legumes because of its accuracy and precision and its speed and convenience relative to the rumen liquor-pepsin procedure; however, for legume species combined, and presumably for grass-legume mixtures, it was not sufficiently accurate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1978.tb00791.x
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  • 10
    Electronic Resource
    Electronic Resource
    THE QUANTITATIVE ANALYSIS OF FREQUENCY-DOMAIN INDUCED POLARIZATION SOUNDINGS OVER HORIZONTAL BEDS (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 24 (1976), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Following up our recent study of an indirect procedure for the practical determination of the maximum frequency-effect, defined as fe = 1 − pρ∞/ρdc with ρ∞ the resistivity at infinite frequency, we show at first how, through the Laplace transform theory, ρ∞ can be related to stationary field vectors in the simple form of Ohm's law. Then applying the equation of continuity for stationary currents with a suitable set of boundary conditions, we derive the integral expression of the apparent resistivity at infinite frequency ρ∞,a in the case of a horizontally layered earth. Finally, from the definition of the maximum apparent frequency-effect, analytical expressions of feα are obtained for both Schlumberger and dipole arrays placed on the surface of the multi-layered earth section in the most general situation of vertical changes in induced polarization together with dc resistivity variations not at the same interfaces. Direct interpretation procedures are suggested for obtaining the layering parameters directly from the analysis of the sounding curves.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1976.tb00930.x
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