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  • Blackwell Publishing Ltd  (343)
  • Cambridge University Press  (163)
  • 1980-1984
  • 1975-1979  (506)
  • 1935-1939
  • 1979  (506)
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 6 (1979), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Mk was demonstrated in three generations of an English family. The propositus was detected as a result of an incompatibility in cross-match. General serological, biochemical and biophysical aspects have been studied.
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: One hundred seven tomato varieties were grown in three different soil types in Minnesota and evaluated for pH in the underripe, ripe and overripe stages of maturity. The pH of one variety, Ace, exceeded 4.6 in the ripe stage of maturity. The pH of 12 varieties exceeded pH 4.6 in the overripe stage of maturity. Results indicate that the pH of cultivars increases as the tomato matures and that home canners’ should process only slightly underripe and firm ripe tomatoes. The growing location appears to affect the pH of the variety.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish diseases 2 (1979), S. 0 
    ISSN: 1365-2761
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Abstract. The geographical distribution of an epizootic of perch Perca fluviatilis L., characterized by severe epidermal lesions and marked fish kills, is described. A wide variety of fungal and bacterial infections were found in diseased fish but the evidence suggests that they were not the primary cause of this condition. The primary pathogenic agent (assuming that it exists) or predisposing environmental factor has yet to be discovered. The severity of this disease is illustrated by monitoring the course of the epizootic in the perch population in Windermere. All age groups of fish were affected during the course of one year although the fish at spawning time appeared to be particularly vulnerable. There was a dramatic increase in the perch mortality in Windermere in 1976 and it is estimated that over 98% of the adult population (over 1 million fish) died in that year.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 26 (1979), S. 0 
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. A new species of neogregarine, Mattesia geminata sp. n., that infects immature stages of the tropical fire ant, Solenopsis geminata (Fabricius), is described. The parasite, which develops in the hypodermis, causes disruption of the developing eyes, melanization of the cuticle, and death of pupae. lntracolonial infection rates are usually less than 2±, but may exceed 90±. Attempts to transmit the infection were unsuccessful.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 2 (1979), S. 0 
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract The suggestion of concentration dependent unloading as a necessary assumption for a closed-form mathematical expression of the Münch hypothesis of phloem transport (Goeschl et at., 1976) has been recently questioned (Ferrier & Christy, 1977). Also questioned was whether previous models, known to have one less equation than dependent variables, have produced erroneous or misleading results. A review of Münch's original concepts and recent comments by several researchers indicate that an equation describing the exit of solutes from sieve tubes is essential for consistency with the Münch hypothesis. Evidence is presented to show that previous mathematical predictions and interpretations regarding ‘runaway velocities’ have resulted in part from mathematical inconsistencies and characteristics of the numerical solution procedures. Likewise, a proposal that different steady-state velocities and concentrations of transport at a given loading rate might be determined by ‘previous history’ of the system can be explained on the basis of implied relationships hidden in models with insufficient equations. Finally it is concluded that concentration dependent unloading in models of the Münch hypothesis will not detract, but rather will contribute to their usefulness in experimental testing and other research regarding phloem transport.
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 26 (1979), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Gypsum crystals of authigenic origin have been found in manganese nodules of the deep-sea sediment surface (4500-5500 m water depth) from the Central Pacific Ocean.
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Two trials were conducted. In trial I, boneless hams were cured with salt, sugar, potassium nitrate and sodium nitrite or salt, sugar and nitrite only. Half of the hams in each group was tied with heavy twine and half was enclosed in elastic netting. There were no differences in any variable due to the oresence or absence of nitrate. Hams that were netted had higher yields after curing and aging than tied hams. They also had a more desirable general appearance. There were no differences in composition, palatability scores or tenderness. In trial II one group of boneless hams was dipped in 2.5% potassium sorbate solution, placed in elastic netting, cured and aged while a similar group was not dipped. Treated hams were slightly more desirable in general appearance, slightly higher in moisture and lower in nitrite. Flavor (P 〈 0.05) and overall satisfaction scores (P 〈 0.01) favored the treated group. Saltiness scores also were lower (P 〈 0.05) in the treated group. Yeast and mold counts were lower (P 〈 0.05) for the treated groups after curing, after salt equalization and after aging 1 month, indicating that potassium sorbate could be used successfully as a yeast-and-mold-retardant in cured hams.
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Two alternative procedures have been developed for use in soy protein isolation with industrial membrane systems. These are (1) membrane processing soy extract at a higher pH (pH 11) and temperature (74°C) than previously done to produce a hydrolyzed product, (2) extracting soy protein with Ca(OH)2 (instead of NaOH) and membrane processing at pH 7. Hydrolyzed products were found to possess different physical and functional properties than previous products. Extracting soy protein with Ca(OH)2 produced a high-calcium, low-sodium product having unusually high nitrogen solubility over a wide pH range.
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Methods of the Association of Official Analytical Chemists (AOAC) were compared with the A-l (direct) and the A-l (modified) methods for enumerating fecal coliforms and Escherichia coli in 702 samples, representing 11 food types. Geometric means of fecal coli-form most probable number (MPN) values of samples analyzed by the A-l (direct) and A-l (modified) methods were equal to or significantly higher than the geometric means of samples analyzed by the AOAC method in 9 (82%) and 11 (100%) of the food categories, respectively. Geometric means of E. coli MPNs of samples analyzed by the A-l (direct) and A-l (modified) methods were equal to or significantly greater than the geometric means of samples analyzed by the AOAC method in 4 (36%) and 8 (73%) of the food categories, respectively. Overall, a significant degree of correlation was demonstrated between the AOAC method and the A-l (modified) method in the enumeration of both fecal coliforms and E. coli in the majority of food types used in this evaluation.
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Effects of rate of heating and final internal temperatures on the texture of fish gels were studied using mechanically deboned fish tissues of 2 species and 2 harvest locations. Generally, rapid heating to 85°C internal temperature (using 100°C steam) produced a firmer, more springy texture in fish gels in comparison with those heated slowly to 70°C internal temperature. However, these thermal effects on gel textures were species and harvest location dependent. Degradations of tropomyosin and myosin observed in cooked fish gels were highly related to gel textural properties. Results further suggested that changes in muscle proteins during heating were caused by proteolytic factor(s) in the sarcoplasmic fraction. The proteolytic crude fraction was isolated and partially characterized. Optimal temperature for proteolytic activity was 60°C; optimal pH was between pH 8.0 and pH 8.5; calcium ion activated the proteolytic activity and the optimal calcium ion concentration for activation was 1 mM; metal chelators, EDTA and EGTA, inhibited the proteolytic activity. A thorough understanding of these proteolytic factors and their subsequent control is important for the utilization of mechanically deboned fish tissues.
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