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  • Articles  (225)
  • 2010-2014  (100)
  • 1990-1994  (96)
  • 1965-1969  (29)
  • Medicine  (198)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (27)
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  • Articles  (225)
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Year
Journal
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 13 (1965), S. 486-492 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 14 (1966), S. 450-454 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 42 (1994), S. 2545-2550 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1745-4565
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The effect of aerobic mesophilic microfloral concentration on the isolation of Listeria monocytogenes LM82 was studied in 31 (18 cheeses and 7 noncheese) retail foods having standard plate counts of 101 to 108 colony forming units (CFU)/g. Foods were spiked with L. monocytogenes and enriched at 30°C for 24 h in a selective enrichment broth used in a U.S. Food and Drug Administration method. Inoculum levels for isolation on modified McBride agar ranged from 0.1 to 〉 5 × 103 with a geometric mean value of 5 inoculated CFU/g or 1.4 CFU/g. Pure Enterococcus (Streptococcus) faecalis (0 to 6 × 106 inoculated CFU/mL) in the absence of food matrix had no effect on the enrichment of L. monocytogenes. Ease of isolation of LM82 was independent of the food microflora concentration both generally and in the specific food type of 9 Brie cheeses. Competition, when it occurs, therefore, may be due to specific bacterial competitors rather than bacterial numbers.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 38 (1990), S. 584-588 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 40 (1992), S. 165-168 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 7 (1967), S. 0 
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary. Pyrazon (5-amino-4-chIoro-2-phenyl-3(2H)-pyridazinonc) labelled with tritium in the phenyl ring, was applied to both the root and shoot of seedlings of red beet (Beta vulgaris L., cultivar Detroit Dark Red I, German millet (Setatra italica J.), and tomato (Lycopersicon esculentum Mill., cultivar Heinz 1350). Of these species, red best is tolerant, millet is moderately tolerant, and tomato is susceptible to pyrazon.When the roots were exposed to 1–325 ppm 3H-pyrazon in the nutrient solution, the greatest root absorption and transiocation to the shoot was observed in tomato and the least in red beet, while millet was intermediate.Applications to the first true leaf indicated that pyrazon was absorbed by the foliage of all three but that it was not transported basipetally. The absorption and translocation studies indicated that pyrazon mi transported primarily in the xylem.A radioactive metabolite of 3H-pyrazon was detected in the shoots of red beet, but there was no evidence for its presence in the shoots of the other two species. Since this metabolite is radioactive, its structure must contain at least some altered form of the phenyl ring which contained the tritium in the parent molecule. This differentiates it from 5-amino-4-chloro-pyridazinone, the previously proposed degradation product of pyrazon, since this compound lacks the phenyl ring.On the bash of these results, it is hypothesized that pyrazon will be phytotoxic if a suffic inn mm entration of the unaltered chemical reaches the site of herbicidal action in the shoot.Migration et métabolisme de la pyrazone dans les espéces rislstantes et sensibles
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 33 (1993), S. 0 
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The effect of five herbicide safeners on preventing maize (Zea mays L.) injury by acetochlor [N-(2-ethyl-6-methyl-phenyl)-N-(ethoxymethyl)-chloroacetamide], their influence on herbicide uptake and metabolism to a glutathione (GSH) conjugate as well as on GSH content and glutathione S-transferase activity (GST) in untreated and herbicide with/without safener-pre-treated 4-day-old seedlings were determined. The safeners studied were: AD-67 (N-di-chloroacetyl-1-oxa-4-azaspiro-4-5-decane), BAS-145138 [1-dichloroacetyl-hexahydro-3,3,8a-trimethyl-pyrrolo(l,2-a)pyrimidin-6(2H)-one], dichlormid (N, A,-diallyl-2,2-dichlo-roacetamide), DKA-24 (N, N2-diallyl-N2dichloroacetylglycineamide) and MG-191 (2-dichloromethyl-2-methyl-1,3-dioxolane). All safeners significantly increased [14C]acetochlor uptake and metabolism rate, maize GSH content and GST activity. Seedlings receiving BAS-145138 pre-treatment metabolized almost 70% of the absorbed [14C]acetochlor within 10 min.Safener-enhanced GST activity was always found to be higher when [14C]acetochlor was used as the substrate compared with CDNB (1-chloro-2,4-dinitrobenzene). Although DKA-24 had a significantly lower influence on both herbicide metabolism and GST activity, it was nearly as effective a safener as BAS-145138, while the others provided no or poor protection to maize from acetochlor injury when they were not incorporated in the soil. Effets d'antidotes sur la toxicité, la pénétration et le métabolisme de I'acétochlore chez le mats etsur l'activité glutathion S-transférase Cinq antidotes d'herbicides diminuaient la toxicité de 1'acétochlore [N-(2-éthyl-6-méthyl-phényl)-N-(éthoxyméthyl)-chloroacétamide] à I'égard du maïs (Zea mays L.). Lew effet sur l'absorption de l'herbicide et sur son métabolisme en un conjugué avec le glutathion (GSH), de même que leur effet sur la teneur en GSH et 1'activité glutathion 5-transférase (GST) ont étéétudiés sur des maïs âgés de 4 jours. Les antidotes étaient: l'AD-67 (N-dichloroacétyl-1-oxa-4-azaspiro-4,5-décane), le BAS-145138 [1 -dichloroacétyl-hexahydro-3,3,8a-triméthyl-pyrrolo(l,2-a) pyrimidine-6(2H)-one], le di-chlormide (N, N-diallyl-2,2-dichloracétamide), le DKA-24 (N, N2-diallyl-N2-dichloracétylgly-cineamide] et le MG-191 (2-dichlorométhyl-2-méthyl-l,3-dioxolane). Tous les antidotes augmentaient de manière significative 1'absorption et le métabolisme de I'acétochlore 14C, ainsi que la teneur du maïs en GSH et son activité GST. Les jeunes plantes prétraitées avec le BAS-145138 métabolisaient en 10 min près de 70% de I'acétochlore 14C absorbé. L'activité GST stimulée par 1'antidote était toujours plus élevée avec I'acétochlore 14C comme substrat qu'avec le CDNB (1-chloro-2,4-dinitrobenzène).Le DKA-24 avait un effet significativement plus faible que le BAS-145138 sur le métabolisme de l'herbicide et sur l'activité GSH, mais son action antidote était presque aussi importante. Les autres produits n'apportaient au maïs qu'une protection faible ou nulle contre l'acétochlore quand ils n'étaient pas incorporés au sol. Wirkung von Safenern auf die Phytotoxizität, Aufnahme und Metabolismus von Acetochlor und die Glutathion-S-Transferase-Aktivität in Mais Die Wirkung von 5 Safenern (AD-67, BAS-145138, Dichlormid, DKA-24 und MG-191; chemische Bezeichnungen s.o.) auf die Phytotoxizität von Acetochlor für Mais (Zea mays L.) und ihr Einfluß auf die Aufnahme des Herbizids und Metabolismus zu einem Glutathion-(GSH-) Konjugat und auf die Glutathion-S-Transferase-(GST-)Aktivität wurde an 4 Tage alten Keimpflanzen untersucht. Durch die Vorbehandlung mit den Safenern wurden die [14C]-Acetochlor-Aufnahme- und -Metabolierungsrate, der GSH-Gehalt und die GST-Ak-tivität signifikant erhöht. Mit BAS-145138 vorbehandelte Keimpflanzen metabolisierten fast 70% des absorbierten [14C]-Acetochlor innerhalb von 10 min. Die durch die Safener erhöhte GST-Aktivität bei [14C]-Acetochlor als Substrat war im Vergleich zu Chlordinitroben-zen immer höher. Obwohl DKA-24 einen signifikant geringeren Einfluß sowohl auf den Herbizidmetabolismus als auch auf die GST-Aktivität hatte, war es fast so wirkungsvoll wie BAS-145138, während die anderen ohne Einarbeitung in den Boden für den Mais keinen oder geringen Schutz gegen Schäden durch Acetochlor boten.
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  • 9
    ISSN: 1546-1718
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Autosomal dominant retinitis pigmentosa (adRP) is known to result from mutations in two different retinal genes—rhodopsin and peripherin—while a third locus has been implicated by linkage data. However, families have been reported in which all three known loci have been excluded. We ...
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 222 (1969), S. 1250-1253 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Counting and sizing of the chromocentres in mouse fibroblast-like cells is feasible. It has shown that, in spite of the great variations of chromocentres in a population of such cells, there are certain ...
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